FZ4 - Heating controller FERROLI - Free user manual and instructions

USER MANUAL FZ4 FERROLI

3D rendering of a rectangular electronic device with internal components and mounting holes (no text or symbols visible)

Use and installation instructions

9.1 DISPLAY LCD SPENTO....61

2. INSTALLATION....66

2.1 ASSEMBLY....66
2.2 INSTALLATION....66
2.3 ASSIGNING OF TERMINALS 67

3. FIRST STARTUP (AUTOCONFIGURATION)......82

4. OPERATION 83

5. "STAND ALONE 1" CONFIGURATIONS....84

5.1 "ONE DIRECT ZONE – NO EXTERNAL SENSOR" 84
5.2 "ONE DIRECT ZONE – WITH EXTERNAL SENSOR" 84
5.3 "TWO DIRECT ZONES – NO EXTERNAL SENSOR" 85
5.4 "TWO DIRECT ZONES – WITH EXTERNAL SENSOR" 85
5.5 "THREE DIRECT ZONES - NO EXTERNAL SENSOR" 85
5.6 "THREE DIRECT ZONES – WITH EXTERNAL SENSOR" 86
5.7 "ONE MIXED ZONE - NO EXTERNAL SENSOR" 86
5.8 "ONE MIXED ZONE - WITH EXTERNAL SFNSOR" 87
5.9 "TWO MIXED ZONES - NO EXTERNAL SENSOR" 88
5.10 "TWO MIXED ZONES – WITH EXTERNAL SENSOR" 88

5.11 "ONE MIXED ZONE AND ONE DIRECT ZONE - NO EXTERNAL SENSOR" 89
5.12 "ONE MIXED ZONE AND ONE DIRECT ZONE - WITH EXTERNAL SENSOR" 89
5.13 "ONE MIXED ZONE AND TWO DIRECT ZONES - NO EXTERNAL SENSOR" 89
5.14 "ONE MIXED ZONE AND TWO DIRECT ZONES - WITH EXTERNAL SENSOR" 90
5.15 "TWO MIXED ZONES AND ONE DIRECT ZONE - NO EXTERNAL SENSOR" 90
5.16 "TWO MIXED ZONES AND ONE DIRECT ZONE – WITH EXTERNAL SENSOR" 91
5.17 "ONE HOT WATER TANK" 92
5.18 "ONE DIRECT ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR" 92
5.19 "ONE DIRECT ZONE AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR" 93
5.20 "TWO DIRECT ZONES AND ONE HOT WATER TANK - NO EXTERNAL SENSOR" 93
5.21 "TWO DIRECT ZONES AND ONE HOT WATER TANK - WITH EXTERNAL SENSOR" 94
5.22 "THREE DIRECT ZONES AND ONE HOT WATER TANK - NO EXTERNAL SENSOR" 94
5.23 "THREE DIRECT ZONES AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR". 95
5.24 "ONE MIXED ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR" 96
5.25 "ONE MIXED ZONE AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR" 97
5.26 "ONE MIXED ZONE, ONE DIRECT ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR" 97
5.27 "ONE MIXED ZONE, ONE DIRECT ZONE AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR" 98

6 "STAND ALONE 2" CONFIGURATIONS....99

6.1 "ONE DIRECT ZONE - NO EXTERNAL SENSOR....99
6.2 "ONE DIRECT ZONE – WITH EXTERNAL SENSOR" 100
6.3 "TWO DIRECT ZONES - NO EXTERNAL SENSOR" 100
6.4 "TWO DIRECT ZONES - WITH EXTERNAL SENSOR" 101
6.5 "THREE DIRECT ZONES - NO EXTERNAL SENSOR" 101
6.6 'THREE DIRECT ZONES - WITH EXTERNAL SENSOR' 101
6.7 "ONE MIXED ZONE – NO EXTERNAL SENSOR" 102
6.8 "ONE MIXED ZONE - WITH EXTERNAL SENSOR" 103
6.9 "TWO MIXED ZONES – NO EXTERNAL SENSOR" 104
6.10 *TWO MIXED ZONES – WITH EXTERNAL SENSOR* 104
6.11 "ONE MIXED ZONE AND ONE DIRECT ZONE - NO EXTERNAL SENSOR" 105
6.12 "ONE MIXED ZONE AND ONE DIRECT ZONE – WITH EXTERNAL SENSOR" 105
6.13 "ONE MIXED ZONE AND TWO DIRECT ZONES - NO EXTERNAL SENSOR" 105
6.14 "ONE MIXED ZONE AND TWO DIRECT ZONES - WITH EXTERNAL SENSOR" 106
6.15 "TWO MIXED ZONES AND ONE DIRECT ZONE - NO EXTERNAL SENSOR" 106
6.16 "TWO MIXED ZONES AND ONE DIRECT ZONE - WITH EXTERNAL SENSOR" 107
6.17 "ONE HOT WATER TANK" 108
6.18 "ONE DIRECT ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR" 108
6.19 "ONE DIRECT ZONE AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR" 109
6.20 "TWO DIRECT ZONES AND ONE HOT WATER TANK - NO EXTERNAL SENSOR" 109
6.21 "TWO DIRECT ZONES AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR" 110
6.22 "THREE DIRECT ZONES AND ONE HOT WATER TANK – NO EXTERNAL SENSOR" 111
6.23 "THREE DIRECT ZONES AND ONE HOT WATER TANK - WITH EXTERNAL SENSOR". 112
6.24 "ONE MIXED ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR" 112
6.25 "ONE MIXED ZONE AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR" 113
6.26 "ONE MIXED ZONE, ONE DIRECT ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR" 114
6.27 "ONE MIXED ZONE, ONE DIRECT ZONE AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR" 115

7 "COMMUNICATING" CONFIGURATIONS....115

7.1 "COMMUNICATING" CONFIGURATIONS WITH DHW (INTEGRATED IN BOILER) 115

8 SERVICE MENU 115

"TS" - TRANSPARENT PARAMETERS MENU 116
"IN" - INFORMATION MENU 116
"HI" - HISTORY MENU 116
"RE" - HISTORY RESET 117

9 INDICATIONS DURING OPERATION 117

9.1 LCD DISPLAY OFF 117

10 ADDITIONAL FUNCTIONS.... 117

10.1 FH MODE 117
10.2 EQUAL SETTINGS FOR EACH ZONE (TSP30) 117
10.3 PUMP ACTIVATION WITH CARD IN STANDBY (TSP34) 117
10.4 HEATING DELIVERY PROBE ENABLING (TSP35)....117
10.5 OPERATION WITH BOILER IN FAULT STATUS (TSP36)....117
10.6 LEGIONELLA PROTECTION (TSP37) 117
10.7 BOILER SUMMER/WINTER MODE (TSP38) 117
10.8 ANTIBLOCKING....118
10.9 SENSOR CHARACTERISTICS 118
10.10 USER SETTINGS....118
10.11 EXTERNAL PROBE/ SLIDING TEMPERATURE....118

TABLE DES MATIÈRES

1. VUE D'ENSEMBLE....120

VUE EXTÉRIEURE ET DIMENSIONS BOÎTIER....120
VUE INTERIEURE CARTE 120
DESCRIPTION GÉNÉRALE ....121
CONTENU DU KIT 122
DONNÉES TECHNIQUES 122

2. INSTALLATION....122

2.1 MONTAGE 122
2.2. INSTALLATION....122
2.3 BORNAGE 123

3. PREMIÈRE MISE EN MARCHE (CONFIGURATION AUTOMATIQUE) 138

4. FONCTIONNEMENT....139

2. INSTALLATION....236

2.1 MONTAGE 236
2.2 INSTALLATION 236
2.3 ZUWEISUNG DER KLEMMEN 237

3. ERSTE INBETRIEBNAHME (AUTOKONFIGURATION....252

4. BETRIEB....253

5. KONFIGURATIONEN "STAND-ALONE 1" 254

5.1 "EIN DIREKTER HEIZKREIS - KEIN AUSSENSENSOR" 254
5.2 "EIN DIREKTER HEIZKREIS - MIT AUSSENSENSOR" 254
5.3 "ZWEI DIREKTE HEIZKREISE – KEIN AUSSENSENSOR" 255
5.4 "ZWEI DIREKTE HEIZKREISE - MIT AUSSENSENSOR" 255
5.5 "DREI DIREKTE HEIZKREISE - KEIN AUSSENSENSOR" 256
5.6 "DREI DIREKTE HEIZKREISE - MIT AUSSENSENSOR" 256
5.7 "EIN GEMISCHTER HEIZKREIS - KEIN AUSSENSENSOR" 256
5.8 "EIN GEMISCHTER HEIZKREIS - MITAUSSENSENSOR" 257
5.9 'ZWEI GEMISCHTE HEIZKREISE - KEIN AUSSENSENSOR' 258
5.4 "ZWEI GEMISCHTE HEIZKREISE - MIT AUSSENSENSOR" 259

Technical diagram showing a mechanical assembly with labeled parts and directional arrows indicating motion or force.

fig. 3

graph TD
    A["Input"] --> B{Decision}
    B --> C["Output"]
    B --> D["Feedback"]
    D --> E["Output"]
    style B fill:#fff,stroke:#000
    style E fill:#fff,stroke:#000

fi g. 4

graph TD
    CALDAIA[" CALDAIA "] --> M[" M "]
    CALDAIA --> 315a[" 315a "]
    CALDAIA --> 317a[" 317a "]
    CALDAIA --> 319a[" 319a "]
    CALDAIA --> 318a[" 318a "]
    CALDAIA --> coil[" Coil "]
    coil --> a[" a "]
    coil --> b[" b "]
    a --> 72a/139a[" 72a/139a "]
    b --> 72b/139b[" 72b/139b "]

fi g. 16

5.2.1 Termostato on/off

5.18.1 Termostato on/off

5.20.1 Termostato on/off

5.22.1 Termostato on/off

5.24.1 Termostato on/off

5.26.1 Termostato on/off

6.1.1 Termostato on/off

Pompa di zona

6.2.1 Termostato on/off

6.18.1 Termostato on/off

6.20.1 Termostato on/off

6.22.1 Termostato on/off

6.24.1 Termostato on/off

6.26.1 Termostato on/off

OFFSET = 20

IMPOSTABILE SEPARATAMENTE PER OGNI SINGOLA ZONA:

SI SCELGONO LE CURVE (DA 1 A 10) AI PARAMETRI:

P05 = CURVA ZONA 1

P11 = CURVA ZONA 2

P17 = CURVA ZONA 3

SI SCEGLIE L'OFFSET (SPOSTAMENTO PARALLELO) PER OGNI SINGOLA ZONA AI PARAMETRI:

P06 = OFFSET ZONA 1

P12 = OFFSET ZONA 2

P18 = OFFSET ZONA 3

OFFSET = 40

EXTERNAL VIEW AND BOX DIMENSIONS

207 mm 163 mm 54 mm

fi g. 1

BOARD INTERNAL VIEW

TS1 L-N L-N L-L L-N L-L FHO1 FHO2 C14 L-N L-N L-L L-N L-L X01 X02 X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 C01 C03 C04 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20 Q21 Q22 Q23 Q24 Q25 Q26 Q27 Q28 Q29 Q30 Q31 Q32 Q33 Q34 RL01-2 RL02-2 RL03-1 RL03-2 RL04-1 RL04-2 RL05-1 RL05-2 RL06-1 RL06-2 RL07-1 RL07-2 RNVY44-1 RNVY55-1 RNVY65-1 RNVY75-1 DISP1 UO1 DISP1 C01 C03 C04 Q21 Q22 Q23 Q24 Q25 Q26 Q27 Q28 Q29 Q30 Q31 Q32 Q33 Q34 Q41 Q42 Q43 Q44 Q45 Q46 Q47 Q48 Q49 Q50 Q51 Q52 Q53 Q54 VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

fig.2

Key

1 LCD
5 AUTOCONFIGURATION button
2 + button
6 Fuse "FH01" board FZ4 loads (relay)
3 - button
7 Fuse "FH02" board FZ4
4 OK button
8 Connector X15 for relay card SK16504

GENERAL DESCRIPTION

The board FZ4B is a controller for zone systems, that can manage direct zones, mixed zones and/or a hot water storage tank. The zone request can occur through Open Therm Remote Timer Control or with On/off (voltage-free contact) Chronothermostats. Each zone can work with separate sliding Temperature parameters (with optional external probe installed).

The board FZ4B can request heat in a direct way from generators equipped with OpenTherm protocol or by means of the relay card (with output with voltage-free contact) SK16504 included in the kit with generators lacking OpenTherm (On/Off) protocol.

All the system types are automatically configurable and are as follows:

1	One Direct zone	fi g. 6 - 7 page 68
2	One Direct zone with Sliding Temp.
3	Two Direct zones	fi g. 8 - 9 page 69
4	Two Direct zones with Sliding Temp.
5	Three Direct zone	fi g. 10 - 11 page 70
6	Three Direct zones with Sliding Temp.
7	One Mixed zone	fi g. 12 - 13 page 71
8	One Mixed zone with Sliding Temp.
9	Two Mixed zones	fi g. 14 - 15 page 72
10	Two Mixed zones with Sliding Temp.
11	One Mixed zone + One Direct zone	fi g. 16 - 17 page 73
12	One Mixed zone + One Direct zone with Sliding Temp.
13	One Mixed zone + Two Direct zones	fi g. 18 - 19 page 74
14	One Mixed zone + Two Direct zones with Sliding Temp.
15	Two Mixed zones + One Direct zone	fi g. 20 - 21 page 75
16	Two Mixed zones + One Direct zone with Sliding Temp.
17	One hot water tank fi g. 22 - 23 page 76
18	One Direct zone + One hot water tank	fi g. 24 - 25 page 77
19	One Direct zone + One hot water tank with Sliding Temp.
20	Two Direct zones + One hot water tank	fi g. 26 - 27 page 78
21	Two Direct zones + One hot water tank with Sliding Temp.
22	Three Direct zones + One hot water tank	fi g. 28 - 29 page 79
23	Three Direct zones + One hot water tank with Sliding Temp.
24	One Mixed zone + One hot water tank	fi g. 30 - 31 page 80
25	One Mixed zone + One hot water tank with Sliding Temp.
26	One Mixed zone + One Direct zone + One hot water tank	fi g. 32 - 33 page 81
27	One Mixed zone + One Direct zone + One hot water tank with Sliding Temp.

The board FZ4B has a Service Menu through which it is possible to parameterise the system, and observe the sensor temperatures or the fault history. LEDs on the circuit board diagnose all the inputs and outputs of board FZ4B.

KIT LIST TECHNICAL DATA
Q. Description
1	Board FZ4B
2	NTC probe L=2500mm
1	Bag for screws
6	Cable clamp
12	Phillips self-tapping screw 3.5x19 UNI6954
2 x 2	Plugs D.5x25
2 x 2	Flathead screw 4x30
1	Instruction manualFZ4B
1	Card SKI6504

Room temp.

Operation: -10°C ÷ +60°C

Storage and transport -25°C ÷ +80°C

Max. room humidity 90% at 40°C

Installation:

Wall

Power supply range:

230Vac +10% -15%, 50Hz

Total current absorbed:

5VA @ 230Vac (no load)

230Vac output characteristics:

Output relay nominal current = 5A@250Vac (max. permissible load: 1A 230Vac cos φ 0.7)

Fuse characteristics:

2 x 250Vac 2A fast 5x20

2. INSTALLATION

2.1 ASSEMBLY

Attention!

Before opening the enclosure, always make sure the mains voltage is disconnected.

Assembly must be carried out only in a closed and dry place. To ensure proper operation, make there are no strong electromagnetic fields in the place of installation. The controller must be separated from the power mains by means of a supplementary device (with a disconnection distance of at least 3 mm on all poles), or a disconnecting device complying with the regulations. During installation make sure the power supply connection cable and the probe cables remain separated.

2.2 INSTALLATION

Before installation, remove the front part of the box, prising with a screwdriver at point 1 (fig.3); then lift the front part of the box as indicated in point 2 (fi g.3):

Fix the back of the zone control (fig.4) to the wall with the set of screws supplied.

Carry out the wiring according to the diagrams given in the following section. Close everything, repeating the previous steps in reverse order.

Technical diagram showing a mechanical assembly with labeled parts and directional arrows, likely illustrating a cutting or fastening process.

fig. 3

graph TD
    A["Device"] --> B{Symbol}
    B --> C["Node"]
    B --> D["Node"]
    B --> E["Node"]
    B --> F["Node"]
    style B fill:#f9f,stroke:#333,stroke-width:2px

fi g. 4

2.3 ASSIGNING OF TERMINALS

After switching off the power to the boiler, carry out the wiring using the terminal block on the zone control unit (fig.5).

L-N L-N L-N L L L-N L L X01 X02 x03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR x09 x10 x11 x12 x13 x14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

fi g. 5

For the low voltage connections (terminals: 17-33) use cables of section 2.5mm^2 max., making sure their path is not the same as that of the mains power cables. The max. length of cables must not exceed 50~m . For the connections to mains voltages (terminals 5-16) and Earth (terminals 1-4), use cables of section 4.0mm^2 max.

The permanent power supply of the zone controller must be connected to terminals 5(L) and 6(N); the cable for communication with the boiler board (OpenTherm Remote Timer Control terminals) must be connected to terminals 32 and 33 (BLR); a possible External Probe (optional) must be connected to terminals 30 and 31 (T4) if the connection is not available on the boiler board. For the rest of the wiring, use the diagrams given in the following sections.

Room adjustment can occur by means of the Remote Timer Control (OpenTherm) and/or Room Chronothermostats (only with voltage-free contact). In any case, make sure to use at least one Remote Timer Control to facilitate the user and installer settings.

Generator demand

Regardless of the type of layout to be managed, the zone controller can demand heat from the generator in 3 different ways:

Therefore, first of all it is necessary to select one of these 3:

1 - Communicating: Generator equipped with Opentherm protocol

FZ4B X15 L-N L-N L-N L L L-N L L X20 X22 X23 X24 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR A

Carry out the "boiler" A connection, disconnecting the relay card (output with voltage-free contact) code SK16504.

A - Connect to boiler Opentherm Remote Timer Control (139)

2 - Stand alone 1: Generator without Opentherm protocol (ON/OFF)

FZ4B X15 SCHEDA RELÉ SK16504 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X05 X10 X11 X12 X13 X14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 B SCHEDA RELÉ SK16504

Carry out the "boiler" B connection, connecting the relay card (output with voltage-free contact) code SK16504

B - Connect to boiler on/off room Thermostat (72)

3 - Stand alone 2: Generator without Opentherm protocol (ON/OFF) with temperature control

FZ4B X15 L N L N L N L L N L L X01 X02 X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 C

Carry out the "boiler" B connection, connecting the relay card (output with voltage-free contact) code SK16504.

Carry out the "sensor" C connection.

B - Connect to boiler on/off room Thermostat (72)
C - Generator delivery sensor

One direct zone

Schematic diagram

CALDAIA 318a a 72a/139a

fi g. 6

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7

RT1 RT2 RT3 T1 T2 T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

318a

318a

72a/139a

318a

318a

72a/139a

FZ4B X01 X02 X03 L-N L-N L-N L L L-N L L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 230Vac L N 50Hz 318a BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 72a 139a IMPIANTO 138

fi g. 7

Key

72a 1st zone (direct) room thermostat

138 External probe

139a 1st zone (direct) Remote Timer Control

318a 1st zone (direct) circulating pump

a 1st zone (direct)

— Necessary wiring

---- Optional wiring

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

Two direct zones

Schematic diagram

graph TD
    A["CALDAIA"] --> B["318a"]
    A --> C["318b"]
    B --> D["a"]
    C --> E["b"]
    D --> F["72a/139a"]
    E --> G["72b/139b"]

fi g. 8

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7

RT1 RT2

RT3 T1 T2

T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a

318b

318b

72a/139a

72b/139b

318a

318a

318b

318b

72a/139a

72b/139b

138

FZ4B X15 X01 X02 L-N L-N L-N L L L-N L L X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 230Vac L N 318a 318b 72a 72b 139a 139b IMPIANTO 138

fi g. 9

Key

72a 1st zone (direct) room thermostat
72b 2nd zone (direct) room thermostat
138 External probe
139a 1st zone (direct) Remote Timer Control
139b 2nd zone (direct) Remote Timer Control

318a 1st zone (direct) circulating pump

318b 2nd zone (direct) circulating pump

a 1st zone (direct)
b 2nd zone (direct)
— Necessary wiring
---- Optional wiring

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

Three direct zones

Schematic diagram

graph TD
    A["CALDAIA"] --> B["318a"]
    A --> C["318b"]
    A --> D["318c"]
    B --> E["a"]
    C --> F["b"]
    D --> G["c"]
    E --> H["72a/139a"]
    F --> I["72b/139b"]
    G --> J["72c/139c"]

fig. 10

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7

RT1 RT2

RT3 T1 T2

T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a

318b

318b

318c

318c

72a/139a

72b/139b

72c/139c

318a

318a

318b

318b

318c

318c

72a/139a

72b/139b

72c/139c

138

FZ4B X01 X02 L-N L-N L-N L L L-N L L X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X39 X13 X11 X12 X13 X34 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 230Vac L N 50Hz 318a 318b 318c 72a 72b 72c 139a 139b 139c IMPIANTO 138

fig. 11

Key

72a 1st zone (direct) room thermostat
72b 2nd zone (direct) room thermostat
72c 3rd zone (direct) room thermostat
138 External probe
139a 1st zone (direct) Remote Timer Control
139b 2nd zone (direct) Remote Timer Control
139c 3rd zone (direct) Remote Timer Control

318a 1st zone (direct) circulating pump
318b 2nd zone (direct) circulating pump
318c 3rd zone (direct) circulating pump

a 1st zone (direct)
b 2nd zone (direct)
c 3rd zone (direct)

— Necessary wiring

---- Optional wiring

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

One mixed zone

Schematic diagram

Use 3-wire mixing valves:

• OPENING PHASE 230V
• CLOSING PHASE 230V
• NEUTRAL.

with switching times (from all closed to all open) of not more than 180 seconds.

graph TD
    A["CALDAIA"] --> B["315a"]
    B --> C["M"]
    C --> D["317a"]
    C --> E["319a"]
    C --> F["318a"]
    F --> G["a"]
    G --> H["72a/139a"]

fi g. 12

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7

RT1 RT2 RT3 T1 T2 T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a

315a - A

315a - B

315a - C

72a/139a

319a

318a

318a

315a - A

315a - B

315a - C

72a/139a

319a

138

FZ4B X01 X02 L-N L-N L-N L L L-N L L X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 230Vac L N 317a 318a A B C 315a BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 72a 139a 319a 138 IMPIANTO

fi g. 13

Key

72a 1st zone (mixed) room thermostat

138 External probe

139a 1st zone (mixed) Remote Timer Control

315a 1st zone (mixed) mixing valve

A = OPENING PHASE

B = NEUTRAL

C = CLOSING PHASE

317a 1st zone (mixed) safety thermostat

318a 1st zone (mixed) circulating pump

319a 1st zone (mixed) delivery sensor

a 1st zone (mixed)

— Necessary wiring

---- Optional wiring

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

Two mixed zones

Schematic diagram

Use 3-wire mixing valves:

• OPENING PHASE 230V
• CLOSING PHASE 230V
• NEUTRAL.

with switching times (from all closed to all open) of not more than 180 seconds.

graph TD
    CALDAIA[" CALDAIA "] --> M1[" M "]
    CALDAIA --> M2[" M "]
    CALDAIA --> M3[" M "]
    CALDAIA --> M4[" M "]
    M1 --> 315a[" 315a "]
    M2 --> 315b[" 315b "]
    M3 --> 317a[" 317a "]
    M3 --> 317b[" 317b "]
    M3 --> 318a[" 318a "]
    M3 --> 318b[" 318b "]
    M4 --> 317a
    M4 --> 317b
    M4 --> 318a
    M4 --> 318b
    a --> 72a/139a[" 72a/139a "]
    b --> 72b/139b[" 72b/139b "]

fi g. 14

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7 RT1 RT2 RT3 T1 T2 T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a/318b

315a - A

315a - B

315a - C

318b

315b - A

315b - B

315b - C

72a/139a

72b/139b

319a

319b

318a

318a/318b

315a - A

315a - B

315a - C

318b

315b - A

315b - B

315b - C

72a/139a

72b/139b

319a

319b

138

FZ4B X01 X02 L-N L-N L-N L L L-N L L X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 L N 230Vac 50Hz 317a 318a A B C 315a 317b 315b BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 72a 72b 319a 319b IMPIANTO

72a 1st zone (mixed) room thermostat
72b 2nd zone (mixed) room thermostat
138 External probe
139a 1st zone (mixed) Remote Timer Control
139b 2nd zone (mixed) Remote Timer Control
315a 1st zone (mixed) mixing valve

A = OPENING PHASE
B = NEUTRAL
C = CLOSING PHASE

315b 2nd zone (mixed) mixing valve

A = OPENING PHASE
B = NEUTRAL
C = CLOSING PHASE

317a 1st zone (mixed) safety thermostat
317b 2nd zone (mixed) safety thermostat
318a 1st zone (mixed) circulating pump
318b 2nd zone (mixed) circulating pump
319a 1st zone (mixed) delivery sensor
319b 2nd zone (mixed) delivery sensor

a 1st zone (mixed)

b 2nd zone (mixed)

— Necessary wiring
---- Optional wiring

fi g. 15

In case of Stand Alone 2 configuration it is necessary to purchase the NTC probe accessory code 1KWMA11W (2 mt.) or code 043005X0 (5 mt.)

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

One mixed zone and one direct zone

Schematic diagram

Use 3-wire mixing valves:

• OPENING PHASE 230V
• CLOSING PHASE 230V
• NEUTRAL.

with switching times (from all closed to all open) of not more than 180 seconds.

graph TD
    A["CALDAIA"] --> B["315a"]
    A --> C["318a"]
    A --> D["318b"]
    B --> E["M"]
    C --> F["317a"]
    C --> G["319a"]
    D --> H["318b"]
    E --> I["a"]
    F --> J["b"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#ccf,stroke:#333
    style D fill:#ccf,stroke:#333
    style E fill:#dfd,stroke:#333
    style F fill:#dfd,stroke:#333
    style G fill:#dfd,stroke:#333
    style H fill:#dfd,stroke:#333
    style I fill:#dfd,stroke:#333
    style J fill:#dfd,stroke:#333

fi g. 16

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7

RT1 RT2

RT3 T1 T2

T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a

315a - A

315a - B

315a - C

318b

318b

72a/139a

72b/139b

319a

318a

318a

315a - A

315a - B

315a - C

318b

318b

72a/139a

72b/139b

319a

138

FZ4B X01 X02 L-N L-N L-N L L L-N L L X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 L N 230Vac 50Hz A B C 317a 318a 315a 318b BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 72a 72b 319a 138 139a fi g. 17 IMPIANTO

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

72a 1st zone (mixed) room thermostat
72b 2nd zone (direct) room thermostat
138 External probe
139a 1st zone (mixed) Remote Timer Control
139b 2nd zone (direct) Remote Timer Control
315a 1st zone (mixed) mixing valve

A = OPENING PHASE
B = NEUTRAL
C = CLOSING PHASE

317a 1st zone (mixed) safety thermostat
318a 1st zone (mixed) circulating pump
318b 2nd zone (direct) circulating pump
319a 1st zone (mixed) delivery sensor

a 1st zone (mixed)

b 2nd zone (direct)

— Necessary wiring
---- Optional wiring

One mixed zone and two direct zones

Schematic diagram

Use 3-wire mixing valves:

• OPENING PHASE 230V
• CLOSING PHASE 230V
• NEUTRAL.

with switching times (from all closed to all open) of not more than 180 seconds.

graph TD
    A["CALDAIA"] --> B["315a"]
    B --> C["M"]
    C --> D["317a"]
    C --> E["319a"]
    D --> F["318a"]
    E --> G["318a"]
    F --> H["a"]
    G --> I["b"]
    H --> J["c"]
    I --> K["72a/139a"]
    I --> L["72b/139b"]
    I --> M["72c/139c"]

fi g. 18

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2

RY3 RY4 RY5 RY6 RY7 RT1 RT2 RT3 T1 T2 T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a

315a - A

315a - B

315a - C

318b

318c

318b/318c

72a/139a

72b/139b

72c/139c

319a

318a

318a

315a - A

315a - B

315a - C

318b

318c

318b/318c

72a/139a

72b/139b

72c/139c

319a

138

FZ4B X01 X02 L-N L-N L-N L L-L-L L L X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 L N 230Vac 50Hz 317a 318a A B C 315a 318b 318c BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 72a 72b 72c 139a 139b 139c IMPIANTO 138

fi g. 19

72a 1st zone (mixed) room thermostat
72b 2nd zone (direct) room thermostat
72c 3rd zone (direct) room thermostat
138 External probe
139a 1st zone (mixed) Remote Timer Control
139b 2nd zone (direct) Remote Timer Control
139c 3rd zone (direct) Remote Timer Control
315a 1st zone (mixed) mixing valve

A = OPENING PHASE

B = NEUTRAL

C = CLOSING PHASE

317a 1st zone (mixed) safety thermostat
318a 1st zone (mixed) circulating pump
318b 2nd zone (direct) circulating pump
318c 3rd zone (direct) circulating pump
319a 1st zone (mixed) delivery sensor

a 1st zone (mixed)
b 2nd zone (direct)
c 3rd zone (direct)

— Necessary wiring

---- Optional wiring

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

Two mixed zones and tone direct zone

Schematic diagram

Use 3-wire mixing valves:

• OPENING PHASE 230V
• CLOSING PHASE 230V
• NEUTRAL.

with switching times (from all closed to all open) of not more than 180 seconds.

graph TD
    A["CALDAIA"] --> B["M"]
    A --> C["M"]
    A --> D["M"]
    B --> E["315a"]
    B --> F["317a"]
    B --> G["319a"]
    C --> H["315b"]
    C --> I["317b"]
    C --> J["319b"]
    D --> K["318c"]
    D --> L["318a"]
    D --> M["318b"]
    M --> N["a"]
    M --> O["b"]
    M --> P["c"]
    N --> Q["72a/139a"]
    O --> R["72b/139b"]
    P --> S["72c/139c"]

fi g. 20

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7 RT1 RT2 RT3 T1 T2 T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a/318b

315a - A

315a - B

315a - C

318b

315b - A

315b - B/318c

315b - C

318c

72a/139a

72b/139b

72c/139c

319a

319b

318a

318a/318b

315a - A

315a - B

315a - C

318b

315b - A

315b - B/318c

315b - C

318c

72a/139a

72b/139b

72c/138c

319a

319b

138

FZ4B X01 X02 L-N L-N L-N L L L-N L L X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 L N 230Vac 50Hz A B C 317a 318a 315a 317b 315b A B C 318c 72a 72b 72c 319a 319b 319c IMPIANTO BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

fi g. 21

72a 1st zone (mixed) room thermostat
72b 2nd zone (mixed) room thermostat
72c 3rd zone (direct) room thermostat
138 External probe

139a 1st zone (mixed) Remote Timer Control
139b 2nd zone (mixed) Remote Timer Control
139c 3rd zone (direct) Remote Timer Control
315a 1st zone (mixed) mixing valve

A = OPENING PHASE
B = NEUTRAL
C = CLOSING PHASE

315b 2nd zone (mixed) mixing valve

A = OPENING PHASE
B = NEUTRAL
C = CLOSING PHASE

317a 1st zone (mixed) safety thermostat
317b 2nd zone (mixed) safety thermostat
318a 1st zone (mixed) circulating pump
318b 2nd zone (mixed) circulating pump
318c 3rd zone (direct) circulating pump
319a 1st zone (mixed) delivery sensor
319b 2nd zone (mixed) delivery sensor

a 1st zone (mixed)
b 2nd zone (mixed)
c 3rd zone (direct)

— Necessary wiring

---- Optional wiring

In case of Stand Alone 2 configuration it is necessary to purchase the NTC probe accessory code 1KWMA11W (2 mt.) or code 043005X0 (5 mt.)

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

One hot water tank circuit

Schematic diagram

CALDAIA 318a 155 a

fi g. 22

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7

RT1 RT2 RT3 T1 T2 T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a

155

FZ4B X15 L-N L-N L-N L L L-N L L X01 X02 X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 230Vac L 50Hz N 318a BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 155 IMPIANTO

fi g. 23

Key

318a Hot water tank circulating pump

155 Hot water tank probe

a Hot water tank circuit

— Necessary wiring

---- Optional wiring

If a hot water tank thermostat (not supplied) is used, it is necessary to purchase the accessory kit code 013017X0 (to be connected in place of the Hot water tank Probe)

One direct zone and one hot water tank circuit

Schematic diagram

graph TD
    A["CALDAIA"] --> B["318a"]
    A --> C["318b"]
    B --> D["a"]
    C --> D
    D --> E["72a/139a"]
    F["155"] --> G["b"]
    G --> H["Output"]
    style A fill:#f9f,stroke:#333
    style F fill:#ccf,stroke:#333

• Management of priority/contemporaneity with parameter FZ4B P25
• Management of Economy/Comfort only with Remote Timer Control

fi g. 24

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7

RT1 RT2 RT3 T1 T2 T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a

318b

318b

72a/139a

155

318a

318a

318b

318b

72a/139a

155

138

FZ4B X01 X02 L-N L-N L-N L L L-N L L X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 230Vac L N 50Hz 318a 318b 72a 139a IMPIANTO 155 138

fig. 25

Key

72a 1st zone (direct) room thermostat

138 External probe

139a 1st zone (direct) Remote Timer Control

318a 1st zone (direct) circulating pump

318b Hot water tank circulating pump

155 Hot water tank probe

a 1st zone (direct)

b Hot water tank circuit

— Necessary wiring

---- Optional wiring

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

If a hot water tank thermostat (not supplied) is used, it is necessary to purchase the accessory kit code 013017X0 (to be connected in place of the Hot water tank Probe)

Two direct zones and one hot water tank circuit

Schematic diagram

graph TD
    A["318a"] --> B["a"]
    C["318b"] --> D["b"]
    E["318c"] --> F["c"]
    B --> G["72a/139a"]
    D --> H["72b/139b"]
    G --> I["Valve 155"]
    H --> J["Valve 155"]
    I --> K["Outlet"]
    J --> L["Outlet"]

• Management of priority/contemporaneity with parameter FZ4B P25
• Management of Economy/Comfort only with Remote Timer Control

fi g. 26

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7

RT1 RT2 RT3 T1 T2 T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a

318b

318b

318c

318c

72a/139a

72b/139b

155

318a

318a

318b

318b

318c

318c

72a/139a

72b/139b

155

138

FZ4B X15 L-N L-N L-N L L L-N L L X01 X02 X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 230Vac L N 318a 318b 318c 72a 72b 139a 139b 155 138 IMPIANTO

fi g. 27

Key

72a 1st zone (direct) room thermostat
72b 2nd zone (direct) room thermostat
138 External probe
139a 1st zone (direct) Remote Timer Control
139b 2nd zone (direct) Remote Timer Control
155 Hot water tank probe

318a 1st zone (direct) circulating pump
318b 2nd zone (direct) circulating pump
318c Hot water tank circulating pump

a 1st zone (direct)
b 2nd zone (direct)
c Hot water tank circuit
— Necessary wiring
---- Optional wiring

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

If a hot water tank thermostat (not supplied) is used, it is necessary to purchase the accessory kit code 013017X0 (to be connected in place of the Hot water tank Probe)

Three direct zones and one hot water tank circuit

Schematic diagram

graph TD
    A["318a"] --> B["a"]
    C["318b"] --> D["b"]
    E["318c"] --> F["c"]
    G["318d"] --> H["d"]
    I["72a/139a"] --> J["72b/139b"]
    K["72c/139c"] --> L["72d/139c"]
    M["155"] --> N["Vertical vessel"]
    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333
    style G fill:#f9f,stroke:#333
    style I fill:#ccf,stroke:#333
    style K fill:#ccf,stroke:#333
    style M fill:#ccf,stroke:#333
    style N fill:#ccf,stroke:#333

• Management of priority/contemporaneity with parameter FZ4B P25
• Management of Economy/Comfort only with Remote Timer Control

fi g. 28

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3

RY4 RY5 RY6 RY7

RT1 RT2

RT3 T1 T2

T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a/318d

318b

318b

318c

318c

318d

72a/139a

72b/139b

72c/139c

155

318a

318a/318d

318b

318b

318c

318c

318d

72a/139a

72b/139b

72c/139c

155

138

FZ4B X01 X02 L-N L-N L-N L L L-N L L X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X'0 X'1 X'2 X'3 X'4 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 230Vac L N 50Hz 318a 318b 318c 318d 72a 72b 72c 155 139a 139b 139c IMPIANTO 138

fi g. 29

Key

72a 1st zone (direct) room thermostat
72b 2nd zone (direct) room thermostat
72c 3rd zone (direct) room thermostat
138 External probe
139a 1st zone (direct) Remote Timer Control
139b 2nd zone (direct) Remote Timer Control
139c 3rd zone (direct) Remote Timer Control

155 Hot water tank probe
318a 1st zone (direct) circulating pump
318b 2nd zone (direct) circulating pump
318c 3rd zone (direct) circulating pump
318d Hot water tank circulating pump

a 1st zone (direct)
b 2nd zone (direct)
c 3rd zone (direct)
d Hot water tank circuit
—Necessary wiring
---- Optional wiring

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

If a hot water tank thermostat (not supplied) is used, it is necessary to purchase the accessory kit code 013017X0 (to be connected in place of the Hot water tank Probe)

One mixed zone and one hot water tank circuit

Schematic diagram

Use 3-wire mixing valves:

• OPENING PHASE 230V
• CLOSING PHASE 230V
• NEUTRAL.

with switching times (from all closed to all open) of not more than 180 seconds.

• Management of priority/contemporaneity with parameter FZ4B P25
- Management of Economy/Comfort only with Remote Timer Control

graph TD
    A["315a"] --> B["317a"]
    B --> C["319a"]
    C --> D["318a"]
    D --> E["318b"]
    E --> F["155"]
    F --> G["b"]
    G --> H["72a/139a"]
    I["a"] --> J["Control Unit"]
    style A fill:#f9f,stroke:#333
    style G fill:#ccf,stroke:#333

fi g. 30

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7

RT1 RT2 RT3 T1 T2 T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a

315a - A

315a - B

315a - C

318b

318b

72a/139a

319a

155

318a

318a

315a - A

315a - B

315a - C

318b

318b

72a/139a

319a

155

138

FZ4B X15 L-N L-N L-N L L L-N L L X01 X02 X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 230Vac L N 50Hz 317a 318a A B C 315a 318b 72a 139a IMPIANTO

fi g. 31

Key

72a 1st zone (mixed) room thermostat

138 External probe

139a 1st zone (mixed) Remote Timer Control

315a 1st zone (mixed) mixing valve

A = OPENING PHASE

B = NEUTRAL

C = CLOSING PHASE

155 Hot water tank probe
317a 1st zone (mixed) safety thermostat
318a 1st zone (mixed) circulating pump
318b Hot water tank circulating pump
319a 1st zone (mixed) delivery sensor

a 1st zone (mixed)
b Hot water tank circuit
— Necessary wiring
- - - - Optional wiring

In case of Stand Alone 2 configuration it is necessary to purchase the NTC probe accessory code 1KWMA11W (2 mt.) or code 043005X0 (5 mt.)

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

If a hot water tank thermostat (not supplied) is used, it is necessary to purchase the accessory kit code 013017X0 (to be connected in place of the Hot water tank Probe)

One mixed zone, one direct zone and one hot water tank circuit

Schematic diagram

Use 3-wire mixing valves:

• OPENING PHASE 230V
• CLOSING PHASE 230V
• NEUTRAL.

with switching times (from all closed to all open) of not more than 180 seconds.

• Management of priority/contemporaneity with parameter FZ4B P25
• Management of Economy/Comfort only with Remote Timer Control

graph TD
    A["CALDAIA"] --> B["Valve 315a"]
    A --> C["Valve 317a"]
    A --> D["Valve 319a"]
    A --> E["Valve 318a"]
    B --> F["Sensor a"]
    C --> G["Sensor b"]
    D --> H["Sensor c"]
    E --> I["Reactor"]
    I --> J["Reactor 72a/139a"]
    I --> K["Reactor 72b/139b"]
    J --> L["Reactor 155"]
    K --> L
    L --> M["Reactor C"]

fi g. 32

Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

RY1 RY2 RY3 RY4 RY5 RY6 RY7 RT1 RT2 RT3 T1 T2 T3 T4

7 (L)

8 (N)

9 (L)

10 (N)

11 (L)

12 (L)

13 (L)

14 (N)

15 (L)

16 (L)

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29 - 30

30 - 31

318a

318a

315a - A

315a - B

315a - C

318b

318b/318c

318c

72a/139a

72b/139b

319a

155

318a

318a

315a - A

315a - B

315a - C

318b

318b/318c

318c

72a/139a

72b/139b

319a

155

138

FZ4B X01 X02 L-N L-N L-N L L L-N L L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 L N 230Vac 50Hz 317a A B C 318a 315a 318b 318c BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X08 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 72a 319a 139a 72b 155 138 IMPIANTO fi g. 33

72a 1st zone (mixed) room thermostat
72b 2nd zone (direct) room thermostat
138 External probe
139a 1st zone (mixed) Remote Timer Control
139b 2nd zone (direct) Remote Timer Control
315a 1st zone (mixed) mixing valve

A = OPENING PHASE
B = NEUTRAL
C = CLOSING PHASE

155 Hot water tank probe

317a 1st zone (mixed) safety thermostat
318a 1st zone (mixed) circulating pump
318b 2nd zone (direct) circulating pump
318c Hot water tank circulating pump
319a 1st zone (mixed) delivery sensor

a 1st zone (mixed)
b 2nd zone (direct)
c Hot water tank circuit

— Necessary wiring

---- Optional wiring

In case of Stand Alone 2 configuration it is necessary to purchase the NTC probe accessory code 1KWMA11W (2 mt.) or code 043005X0 (5 mt.)

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

If a hot water tank thermostat (not supplied) is used, it is necessary to purchase the accessory kit code 013017X0 (to be connected in place of the Hot water tank Probe)

3. FIRST STARTUP (AUTOCONFIGURATION)

After carrying out the connection operations, switch on the power to the boiler; set the heating and DHW set points to the required max. value and switch on the zone controller only afterwards.

If present, activate the request status of possible Room Chronothermostats (closed contact) connected to the zone controller.

Press the AUTOCONFIG button or Autoconfiguration (detail 5 - Fig. 34) on the controller and keep it pressed until all the bottom LEDs blink as follows:

graph TD
    A["04"] --> B["DISP1"]
    B --> C["U01"]
    B --> D["LY"]
    E["SW01"] --> F["STATO"]
    G["SW02"] --> F
    H["SW03"] --> I["SW04"]
    J["Hand icon"] --> K["5"]

fi g. 34 - AUTOCONFIGURATION activation

RY2 RY1 D20 D18 RY2 RY1 C01 C03 U03 DISP1 SW01 D17 STATO D22 RY3 D22 RY4 D22 RY5 D22 RY6 D22 RY7 U01 Y1 TS1 RY3 RY4 RY5 RY6 RY7 C34 L-N L-NL -N L L-L-N L L X01 X02 X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 D08 D09 D10 D11 D12 D13 D14 D15 D16 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR X09 X10 X11 X12 X13 X14 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

fi g. 35 - Saving of system confi guration

When all the bottom LEDs and the STATUS LED blink, release the AUTOCONFIG button or Autoconfiguration (detail 5 - Fig. 34). When the Status LED stops blinking, make sure the bottoms LEDs that are on fixed match the required system configuration table (fig. 35).

If this does not occur, check the wiring again and repeat the system AutoConfiguration procedure.

If one or more Remote Timer Controls are used, at the end of the Autoconfiguration procedure the Heating and DHW setpoints must be set (see the relevant documentation).

4. OPERATION

The board FZ4B is a zone controller that can be configured in several ways.

There are six main configurations:

1. "Stand Alone 1" confi igurations without DHW

This means that the board FZ4B works alone, without the OpenTherm connection to the boiler.

To request heat, it will use the relay of card SK connected to connector X15.

Connecting one or more Remote Controls: the functions associated with the DHW settings will be ignored (the DHW setpoint must be 0^ C and the DHW sensor “- -”); the board FZ4B must send the heating bits to activate the remote control icons. The min. and max. Setpoint limits are provided by board FZ4B.

2. "Stand Alone 1" confi igurations with DHW (On system)

This means that the board FZ4B works alone, without the OpenTherm connection to the boiler.

To request heat, it will use the relay of card SK connected to connector X15; to know the temperature of the hot water tank, hydraulically connected in parallel to heating zones, it will use input T2.

Connecting one or more Remote Controls: the functions associated with the DHW settings will be managed in parallel; the board FZ4B must send the heating and DHW bits to activate the remote control icons. The min. and max. Setpoint limits are provided by board FZ4B. The DHW information will be T2. The economy/comfort function of each remote control will act on the DHW mode of the board FZ4B.

3. "Stand Alone 2" confi igurations without DHW

This means that the board FZ4B works alone, without the OpenTherm connection to the boiler.

To know the delivery temperature it will use input T3; to demand heat it will use the relay of card SK connected to connector X15.

Connecting one or more Remote Controls: the functions associated with the DHW settings will be ignored (the DHW setpoint must be 0°C and the DHW sensor "- -"); the board FZ4B must send the heating bits to activate the remote control icons. The min. and max. Setpoint limits are provided by board FZ4B. The heating sensor information will be that of input T3.

4. "Stand Alone 2" confi igurations with DHW (On system)

This means that the board FZ4B works alone, without the OpenTherm connection to the boiler.

To know the delivery temperature it will use input T3; to demand heat it will use the relay of card SK connected to connector X15; to know the temperature of the hot water tank, hydraulically connected in parallel to heating zones, it will use input T2.

Connecting one or more Remote Controls: the functions associated with the DHW settings will be managed in parallel; the board FZ4B must send the heating and DHW bits to activate the remote control icons. The min. and max. Setpoint limits are provided by board FZ4B. The heating sensor information will be that of T3; whereas that of the DHW will be T2. The economy/comfort function of each remote control will act on the DHW mode of the board FZ4B.

5. "Communicating" configurations with DHW (Integrated in boiler)

This means that the board FZ4B works alone, with the OpenTherm connection to the boiler.

To know the delivery temperature, demand heat and to know the temperature of the hot water tank, connected in the boiler, it will use the OpenTherm protocol.

Connecting one or more Remote Controls: the functions associated with the DHW settings will be managed in parallel; the board FZ4B must transfer the heating, DHW and power bits to activate the remote control icons coming from the boiler board. The min. and max. heating Setpoint limits are provided by board FZ4B; those of the DHW will be supplied by the boiler board. It must send the room temperature detected by the Remote Control RT1 to the boiler board; in case of no Remote Controls, it must send the value 25°C the boiler board. The economy/comfort function of each remote control will act on the DHW mode of the boiler board.

6. "Communicating" confi gurations with DHW (On system)

This means that the board FZ4B works alone, with the OpenTherm connection to the boiler.

To know the delivery temperature and demand heat it will use the OpenTherm protocol. To know the temperature of the hot water tank, hydraulically connected in parallel to heating zones, it will use input T2.

Connecting one or more Remote Controls: the functions associated with the DHW settings will be managed in parallel; the board FZ4B must transfer the heating, DHW and power bits to activate the remote control icons coming from the boiler board. The min. and max. Setpoint limits are provided by board FZ4B. It must send the room temperature detected by the Remote Control RT1 to the boiler board; in case of no Remote Controls, it must send the value 25°C the boiler board. The economy/comfort function of each remote control will act on the DHW mode of the board FZ4B.

5. "STAND ALONE 1" CONFIGURATIONS.

5.1 "ONE DIRECT ZONE – NO EXTERNAL SENSOR"

Autoconfi guration

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
X15	Card SK connected

5.1.1 On/Off Thermostat

Zone pump

System circulation (including boiler) is ensured by the zone circulating pump: therefore the boiler does not have to have the circulating pump.

Zone valve

System circulation (including boiler) is ensured by the boiler circulating pump: therefore the boiler must have the circulating pump.

Algorithm

a. Zone card Heating Setpoint = Zone1 Heating Setpoint
b. Zone1 Heating Setpoint = Zona1 Max.Temperature (TSP02) + Zona1 calculated setpoint Offset (TSP03).
c. If RT1 closes the contact, RY1 must be powered; and must remain powered while RT1 remains closed.
The Delay for Zone timer (TSP29) starts: during this time the relay of card SK must be unpowered.
d. At the end of the Delay for Zone timer (TSP29), the relay of card SK must be powered.
e. If RT1 opens the contact, the relay of card SK must be unpowered; whereas RY1 must remain powered for the entire duration of the Post-circulation Time timer (TSP27); at the end of this timer, RY1 must be unpowered.

5.1.2 Remote Control

Zone pump

System circulation (including boiler) is ensured by the zone circulating pump: therefore the boiler does not have to have the circulating pump.

Zone valve

System circulation (including boiler) is ensured by the boiler circulating pump: therefore the boiler must have the circulating pump.

Algorithm

a. Zone card Heating Setpoint = Zone1 Heating Setpoint
b. Zone1 Heating Setpoint = Control Setpoint calculated from Remote Control + Zone1 Calculated setpoint Offset (TSP03).
The Control Setpoint calculated from Remote Control is limited by ID57 of the Remote Control itself (Heating temperature adjustment button).
The range for management of the Remote Control ID57 is defined by the parameters: Zone1 Min. Temperature (TSP01) and Zone1 Max. Temperature (TSP02).
c. If RT1 activates the request, RY1 must be powered; and must remain powered while RT1 remains in request status.
The Delay for Zone timer (TSP29) starts: during this time the relay of card SK must be unpowered.
d. At the end of the Delay for Zone timer (TSP29), the relay of card SK must be powered.
e. If RT1 deactivates the request, the relay of card SK must be unpowered; whereas RY1 must remain powered for the entire duration of the Post-circulation Time timer (TSP27); at the end of this timer, RY1 must be unpowered.

5.2 "ONE DIRECT ZONE – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct Zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

5.2.1 On/Off Thermostat

The algorithm remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

a. If Zone 1 External Probe Curve (TSP05) is equal to 0.
Zone1 Heating Setpoint = Zone1 Max. Temperature (TSP02) + Zone1 calculated setpoint Offset (TSP03).
b. If Zone 1 External Probe Curve (TSP05) is between 1 and 10.
Zone1 Heating Setpoint = Setpoint calculated from External Probe + Zone1 calculated setpoint Offset (TSP03).
However:
If Zone1 Max. Temperature (TSP02) < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Zone1 Max. Temperature (TSP02).

5.2.2 Remote Control

The algorithm remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

a. If Zone 1 External Probe Curve (TSP05) is equal to 0.

Zone1 Heating Setpoint = Control Setpoint calculated from Remote Control + Zone1 calculated setpoint Offset (TSP03).

b. If Zone 1 External Probe Curve (TSP05) is between 1 and 10.

Zone1 Heating Setpoint = Setpoint calculated from External Probe + Zone1 calculated setpoint Offset (TSP03).

However:

If Zone1 Max. Temperature (TSP02) < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Zone1 Max. Temperature (TSP02). If Control Setpoint calculated from Remote Control < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Control Setpoint calculated from Remote Control.

5.3 "TWO DIRECT ZONES - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
X15	Card SK connected

The algorithm remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Zone2 Heating Setpoint.

If the zone that ends the request has the higher Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment parameters.
c. Post-circulation time

This must be carried out only on the last zone that ends the request.

Also, if the last zone in request status is doing post-circulation and another zone starts its own request, post-circulation must be stopped: so that there is always and only a single zone in post-circulation.

5.4 "TWO DIRECT ZONES – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.3 "Two Direct Zones – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint and Zone2 Heating Setpoint if the sliding temperature was activated in one or both zones.

5.5 "THREE DIRECT ZONES - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
13	Pump phase or Valve (RY5) Direct zone 3
14	Pump neutral or Valve (RY5) Direct zone 3
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
23	On/Off Thermostat or Remote Control (RT3) Direct zone 3
24	On/Off Thermostat or Remote Control (RT3) Direct zone 3
X15	Card SK connected

The algorithm remains the same as the configuration: 5.3 "TWO Direct Zones – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint.

If the zone that ends the request has the highest Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a highest Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment parameters.

5.6 "THREE DIRECT ZONES – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1)	Direct zone 1
8	Pump neutral or Valve (RY1)	Direct zone 1
10	Pump neutral or Valve (RY2)	Direct zone 2
12	Pump phase or Valve (RY4)	Direct zone 2
13	Pump phase or Valve (RY5)	Direct zone 3
14	Pump neutral or Valve (RY5)	Direct zone 3
19	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
20	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
21	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
22	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
23	On/Off Thermostat or Remote Control (RT3)	Direct zone 3
24	On/Off Thermostat or Remote Control (RT3)	Direct zone 3
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.5 "THREE Direct Zones – No External Sensor"

What changes is only the calculation of Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint if the sliding temperature was activated in one or more zones.

5.7 "ONE MIXED ZONE - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
X15	Card SK connected

5.7.1 On/Off Thermostat

Algorithm

a. Zone card Heating Setpoint = Zone1 Heating Setpoint
b. Zone1 Heating Setpoint = Zona1 Max.Temperature (TSP02) + Zona1 calculated setpoint Offset (TSP03).
c. If RT1 closes the contact, RY1 must be powered; and must remain powered while RT1 remains closed.
The Delay for Zone timer (TSP29) starts: during this time the relay of card SK must be unpowered.
The Mixing Valve Boost timer (TSP20) starts: during this time RY2 must be powered and RY3 must be unpowered.

d. If the Delay for Zone timer (TSP29) is less than the Mixing Valve Boost timer (TSP20), the Delay for Zone timer (TSP29) must be equal to the Mixing Valve Boost timer (TSP20).

e. At the end of Mixing Valve Boost timer (TSP20), the Zone1 mixing valve adjustment algorithm must start; and this while RT1 remains closed. The aim of the microprocessor is to adjust the valve so that the temperature detected by sensor T1 is equal to the Zone1 Max. Temperature value (TSP02). Therefore:

• If the temperature detected by sensor T1 is equal to the Zone1 Max. Temperature value (TSP02), RY2 must be unpowered and RY3 must be unpowered.
• If the temperature detected by sensor T1 is higher than the Zone1 Max. Temperature value (TSP02), RY2 must be unpowered whereas RY3 must be powered

according to the following rule: (temperature detected by sensor T1 - Zone1 Max. Temperature value (TSP02)) * Mixing valve On Time timer value for °C (TSP21) each time the Mixing valve On+Off Time timer (TSP19) has expired.

- If the temperature detected by sensor T1 is lower than the Zone1 Max. Temperature value (TSP02), RY3 must be unpowered whereas RY2 must be powered according to the following rule: (Zone1 Max. Temperature value (TSP02) - temperature detected by sensor T1) * Mixing valve On Time timer value for °C (TSP21) each time the Mixing valve On+Off Time timer (TSP19) has expired.

f. At the end of the Delay for Zone timer (TSP29), the relay of card SK must be powered.

g. If RT1 opens the contact, the relay of card SK must be unpowered; RY2 must be unpowered, RY3 must remain powered for the entire duration of the Mixing valve closing Time timer (TSP31); whereas RY1 must remain powered for the entire duration of the Post-circulation Time timer (TSP27); at the end of this timer, RY1 must be unpowered.

5.7.2 Remote Control

Algorithm

a. Zone card Heating Setpoint = Zone1 Heating Setpoint
b. Zone1 Heating Setpoint = Control Setpoint calculated from Remote Control + Zone1 Calculated setpoint Offset (TSP03).
The Control Setpoint calculated from Remote Control is limited by ID57 of the Remote Control itself (Heating temperature adjustment button).
The range for management of the Remote Control ID57 is defined by the parameters: Zone1 Min. Temperature (TSP01) and Zone1 Max. Temperature (TSP02).

c. If RT1 activates the request, RY1 must be powered; and must remain powered while RT1 remains in request status.

The Delay for Zone timer (TSP29) starts: during this time the relay of card SK must be unpowered.

The Mixing Valve Boost timer (TSP20) starts: during this time RY2 must be powered and RY3 must be unpowered.

d. If the Delay for Zone timer (TSP29) is less than the Mixing Valve Boost timer (TSP20), the Delay for Zone timer (TSP29) must be equal to the Mixing Valve Boost timer (TSP20).
e. At the end of Mixing Valve Boost timer (TSP20), the Zone1 mixing valve adjustment algorithm must start; and this while RT1 remains in request status. The aim of the microprocessor is to adjust the valve so that the temperature detected by sensor T1 is equal to the Control Setpoint value calculated from Remote Control. Therefore:

- If the temperature detected by sensor T1 is equal to the Control Setpoint value calculated from Remote Control, RY2 must be unpowered and RY3 must be unpowered.

- If the temperature detected by sensor T1 is higher than the Control Setpoint value calculated from Remote Control, RY2 must be unpowered whereas RY3 must be powered according to the following rule: (temperature detected by sensor T1 - Control Setpoint value calculated from Remote Control) * Mixing valve On Time timer value for °C (TSP21) each time the Mixing valve On+Off Time timer (TSP19) has expired.

- If the temperature detected by sensor T1 is lower than the Control Setpoint value calculated from Remote Control, RY3 must be unpowered whereas RY2 must be powered according to the following rule: (Control Setpoint value calculated from Remote Control - temperature detected by sensor T1) * Mixing valve On Time timer value for °C (TSP21) each time the Mixing valve On+Off Time timer (TSP19) has expired

f. At the end of the Delay for Zone timer (TSP29), the relay of card SK must be powered.

g. If RT1 deactivates the request, the relay of card SK must be unpowered; RY2 must be unpowered, RY3 must be powered for the entire duration of the Mixing valve closing Time timer (TSP31); whereas RY1 must remain powered for the entire duration of the Post-circulation Time timer (TSP27); at the end of this timer, RY1 must be unpowered.

5.8 "ONE MIXED ZONE – WITH EXTERNAL SENSOR".

Autoconfi guration:

Connection	Description
7	Pump phase (RY1)	Mixed zone 1
8	Pump neutral (RY1)	Mixed zone 1
9	Mixing Valve Opening phase (RY2)	Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

5.8.1 On/Off Thermostat

The algorithm remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

a. If Zone 1 External Probe Curve (TSP05) is equal to 0.
Zone1 Heating Setpoint = Zone1 Max. Temperature (TSP02) + Zone1 calculated setpoint Offset (TSP03).
b. If Zone 1 External Probe Curve (TSP05) is between 1 and 10.
Zone1 Heating Setpoint = Setpoint calculated from External Probe + Zone1 calculated setpoint Offset (TSP03).

However:

If Zone1 Max. Temperature (TSP02) < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Zone1 Max. Temperature (TSP02).

5.8.2 Remote Control

The algorithm remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

a. If Zone 1 External Probe Curve (TSP05) is equal to 0.

Zone1 Heating Setpoint = Control Setpoint calculated from Remote Control + Zone1 calculated setpoint Offset (TSP03).

b. If Zone 1 External Probe Curve (TSP05) is between 1 and 10.

Zone1 Heating Setpoint = Setpoint calculated from External Probe + Zone1 calculated setpoint Offset (TSP03).

However:

If Zone1 Max. Temperature (TSP02) < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Zone1 Max. Temperature (TSP02).

If Control Setpoint calculated from Remote Control < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Control Setpoint calculated from Remote Control.

5.9 "TWO MIXED ZONES – NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
8	Pump neutral (RY4) Mixed zone 2
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Mixed zone 2
13	Mixing Valve Opening phase (RY5) Mixed zone 2
14	Mixing Valve neutral (RY5) Mixed zone 2
15	Mixing Valve Closing phase (RY6) Mixed zone 2
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Mixed zone 2
22	On/Off Thermostat or Remote Control (RT2) Mixed zone 2
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
27	NTC sensor (T2) Mixed zone 2 delivery
28	NTC sensor (T2) Mixed zone 2 delivery
X15	Card SK connected

The algorithm remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Zone2 Heating Setpoint.

If the zone that ends the request has the higher Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment sensors and parameters.
c. Post-circulation time

This must be carried out only on the last zone that ends the request.

Also, if the last zone in request status is doing post-circulation and another zone starts its own request, post-circulation must be stopped whereas the mixing valve must be closed for the entire duration of the Mixing valve closing Time timer (TSP31): so that there is always and only a single zone in post-circulation.

5.10 "TWO MIXED ZONES – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1)	Mixed zone 1
8	Pump neutral (RY1)	Mixed zone 1
8	Pump neutral (RY4)	Mixed zone 2
9	Mixing Valve Opening phase (RY2)	Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
12	Pump phase (RY4)	Mixed zone 2
13	Mixing Valve Opening phase (RY5)	Mixed zone 2
14	Mixing Valve neutral (RY5)	Mixed zone 2
15	Mixing Valve Closing phase (RY6)	Mixed zone 2
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2)	Mixed zone 2
22	On/Off Thermostat or Remote Control (RT2)	Mixed zone 2
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
27	NTC sensor (T2) Mixed zone 2 delivery
28	NTC sensor (T2) Mixed zone 2 delivery
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.9 "TWO Mixed Zones – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint and Zone2 Heating Setpoint if the sliding temperature was activated in one or both zones.

5.11 "ONE MIXED ZONE AND ONE DIRECT ZONE - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Direct zone 1
14	Pump neutral (RY5) Direct zone 1
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 1
22	On/Off Thermostat or Remote Control (RT2) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
X15	Card SK connected

The algorithm remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

The algorithm of the Mixed Zone remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Zone2 Heating Setpoint.

If the zone that ends the request has the higher Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment sensors and parameters.
c. Post-circulation time

This must be carried out only on the last zone that ends the request.

Also, if the last zone in request status is doing post-circulation and another zone starts its own request, post-circulation must be stopped whereas the mixing valve must be closed for the entire duration of the Mixing valve closing Time timer (TSP31): so that there is always and only a single zone in post-circulation.

5.12 "ONE MIXED ZONE AND ONE DIRECT ZONE - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1)	Mixed zone 1
8	Pump neutral (RY1)	Mixed zone 1
9	Mixing Valve Opening phase (RY2)	Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
12	Pump phase (RY4)	Direct zone 1
14	Pump neutral (RY5)	Direct zone 1
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2)	Direct zone 1
22	On/Off Thermostat or Remote Control (RT2)	Direct zone 1
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.11 "ONE Mixed Zone and ONE Direct Zone – No External Sensor."

What changes is only the calculation of Zone1 Heating Setpoint and Zone2 Heating Setpoint if the sliding temperature was activated in one or both zones.

5.13 "ONE MIXED ZONE AND TWO DIRECT ZONES - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection	Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Direct zone 1
13	Pump phase (RY5) Direct zone 2
14	Pump neutral (RY5) Direct zone 1
14	Pump neutral (RY5) Direct zone 2
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 1
22	On/Off Thermostat or Remote Control (RT2) Direct zone 1
23	On/Off Thermostat or Remote Control (RT2) Direct zone 1
24	On/Off Thermostat or Remote Control (RT2) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
X15	Card SK connected

The algorithm of Direct Zone1 remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

The algorithm of Direct Zone2 remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

The algorithm of the Mixed Zone remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint.

If the zone that ends the request has the highest Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment sensors and parameters.
c. Post-circulation time

This must be carried out only on the last zone that ends the request.

Also, if the last zone in request status is doing post-circulation and another zone starts its own request, post-circulation must be stopped whereas the mixing valve must be closed for the entire duration of the Mixing valve closing Time timer (TSP31): so that there is always and only a single zone in post-circulation.

5.14 "ONE MIXED ZONE AND TWO DIRECT ZONES - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Direct zone 1
13	Pump phase (RY5) Direct zone 2
14	Pump neutral (RY5) Direct zone 1
14	Pump neutral (RY5) Direct zone 2
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 1
22	On/Off Thermostat or Remote Control (RT2) Direct zone 1
23	On/Off Thermostat or Remote Control (RT2) Direct zone 1
24	On/Off Thermostat or Remote Control (RT2) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.13 "ONE Mixed Zone and TWO Direct Zones – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint if the sliding temperature was activated in one or more zones.

5.15 "TWO MIXED ZONES AND ONE DIRECT ZONE - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection	Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
8	Pump neutral (RY4) Mixed zone 2
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Mixed zone 2
13	Mixing Valve Opening phase (RY5) Mixed zone 2
14	Mixing Valve neutral (RY5) Mixed zone 2
14	Pump neutral (RY7) Direct zone 1
15	Mixing Valve Closing phase (RY6) Mixed zone 2
16	Pump phase (RY7) Direct zone 1
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Mixed zone 2
22	On/Off Thermostat or Remote Control (RT2) Mixed zone 2
23	On/Off Thermostat or Remote Control (RT3) Direct zone 1
24	On/Off Thermostat or Remote Control (RT3) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
27	NTC sensor (T2) Mixed zone 2 delivery
28	NTC sensor (T2) Mixed zone 2 delivery
X15	Card SK connected

The algorithm of Direct Zone1 remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

The algorithm of Mixed Zone1 remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

The algorithm of Mixed Zone2 remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint.

If the zone that ends the request has the highest Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment sensors and parameters.
c. Post-circulation time

This must be carried out only on the last zone that ends the request.

Also, if the last zone in request status is doing post-circulation and another zone starts its own request, post-circulation must be stopped whereas the mixing valve must be closed for the entire duration of the Mixing valve closing Time timer (TSP31): so that there is always and only a single zone in post-circulation.

5.16 "TWO MIXED ZONES AND ONE DIRECT ZONE - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection	Description
7	Pump phase (RY1)	Mixed zone 1
8	Pump neutral (RY1)	Mixed zone 1
8	Pump neutral (RY4)	Mixed zone 2
9	Mixing Valve Opening phase (RY2)	Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
12	Pump phase (RY4)	Mixed zone 2
13	Mixing Valve Opening phase (RY5)	Mixed zone 2
14	Mixing Valve neutral (RY5)	Mixed zone 2
14	Pump neutral (RY7)	Direct zone 1
15	Mixing Valve Closing phase (RY6)	Mixed zone 2
16	Pump phase (RY7)	Direct zone 1
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2)	Mixed zone 2
22	On/Off Thermostat or Remote Control (RT2)	Mixed zone 2
23	On/Off Thermostat or Remote Control (RT3)	Direct zone 1
24	On/Off Thermostat or Remote Control (RT3)	Direct zone 1
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
27	NTC sensor (T2)	Mixed zone 2 delivery
28	NTC sensor (T2)	Mixed zone 2 delivery
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.15 "TWO Mixed Zones and ONE Direct Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint if the sliding temperature was activated in one or more zones.

5.17 "ONE HOT WATER TANK"

Autoconfi guration:

Connection Description
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
27	NTC sensor (T2) Hot water tank probe
28	NTC sensor (T2) Hot water tank probe
X15	Card SK connected

Algorithm

a. DHW Setpoint = Hot water tank Setpoint (TSP26).
b. Zone card Heating Setpoint = Hot water tank Primary Setpoint (TSP23).
c. If T2 becomes lower than the DHW Setpoint minus the value of the Hot water tank Hysteresis parameter (TSP22), DHW mode starts.

The relay of card SK must be powered.

d. RY7 must be powered while the DHW mode is active.

e. The DHW mode ends when T2 becomes higher than the DHW Setpoint: the relay of card SK must be unpowered and RY7 must be unpowered after 2 minutes.

5.18 "ONE DIRECT ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Direct Zone 1
20	On/Off Thermostat or Remote Control (RT1)	Direct Zone 1
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
X15	Card SK connected

5.18.1 On/Off Thermostat

The algorithm of Direct Zone1 remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 5.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.
During DHW mode, the algorithm of the Hot water tank has the highest priority.
During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.
b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.
In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).
If the circuit (Heating or Hot water tank) that ends the request has the higher Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.
If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.
c. Each zone has its own adjustment parameters.
d. Post-circulation time
During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

5.18.2 Remote Control

The algorithm of Direct Zone1 remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 5.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.
During DHW mode, the algorithm of the Hot water tank has the highest priority.
During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.
b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.
In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).
If the circuit (Heating or Hot water tank) that ends the request has the higher Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.
d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

e. DHW setpoint

The range for management of ID56 of the Remote Control (DHW temperature adjustment button) is between 10°C and 65°C: zone card fixed ranges.

Modification of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Control; the zone card takes the last modified value and must update both.

f. DHW Eco/Comfort

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

5.19 "ONE DIRECT ZONE AND ONE HOT WATER TANK - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
27	NTC sensor (T2) Hot water tank probe
28	NTC sensor (T2) Hot water tank probe
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.18 "ONE Direct Zone and ONE Hot water tank – No External Sensor". What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

5.20 "TWO DIRECT ZONES AND ONE HOT WATER TANK - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1)	Direct zone 1
8	Pump neutral or Valve (RY1)	Direct zone 1
10	Pump neutral or Valve (RY2)	Direct zone 2
12	Pump phase or Valve (RY4)	Direct zone 2
14	Pump neutral (RY7)	Hot water tank
16	Pump phase (RY7)	Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
20	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
21	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
22	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
X15	Card SK connected

5.20.1 On/Off Thermostat

The algorithm of the Direct Zones remains the same as the configuration: 5.3 "TWO Direct Zones – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 5.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.
d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

15.20.2 Remote Control

The algorithm of the Direct Zones remains the same as the configuration: 5.3 "TWO Direct Zones – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 5.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.

d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

e. DHW setpoint

The range for management of ID56 of the Remote Controls (DHW temperature adjustment button) is between 10°C and 65°C: zone card fixed ranges.

Modification of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Controls; the zone card takes the last modified value and must update the others.

f. DHW Eco/Comfort (1 Remote Control)

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

g. DHW Eco/Comfort (plus 1 Remote Control)

The DHW request generated by T2 is enabled only if all the Remote Controls are in Comfort mode.

5.21 "TWO DIRECT ZONES AND ONE HOT WATER TANK - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
20	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
21	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
22	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.20 "TWO Direct Zones and ONE Hot water tank – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint and Zone2 Heating Setpoint if the sliding temperature was activated in one or both zones.

5.22 "THREE DIRECT ZONES AND ONE HOT WATER TANK - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1)	Direct zone 1
8	Pump neutral or Valve (RY1)	Direct zone 1
10	Pump neutral or Valve (RY2)	Direct zone 2
12	Pump phase or Valve (RY4)	Direct zone 2
13	Pump phase or Valve (RY5)	Direct zone 3
14	Pump neutral or Valve (RY5)	Direct zone 3
14	Pump neutral (RY7)	Hot water tank
16	Pump phase (RY7)	Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
20	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
21	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
23	On/Off Thermostat or Remote Control (RT3) Direct zone 3
24	On/Off Thermostat or Remote Control (RT3) Direct zone 3
27	NTC sensor (T2) Hot water tank probe
28	NTC sensor (T2) Hot water tank probe
X15	Card SK connected

5.22.1 On/Off Thermostat

The algorithm of the Direct zones remains the same as the configuration: 5.6 "THREE Direct Zones – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 5.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint, Zone3 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.
d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

5.22.2 Remote Control

The algorithm of the Direct zones remains the same as the configuration: 5.6 "THREE Direct Zones – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 5.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint, Zone3 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.
d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

e. DHW setpoint

The range for management of ID56 of the Remote Controls (DHW temperature adjustment button) is between 10°C and 65°C: zone card fixed ranges.

Modification of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Controls; the zone card takes the last modified value and must update the others.

f. DHW Eco/Comfort (1 Remote Control)

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

g. DHW Eco/Comfort (plus 1 Remote Control)

The DHW request generated by T2 is enabled only if all the Remote Controls are in Comfort mode.

5.23 "THREE DIRECT ZONES AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1)	Direct zone 1
10	Pump neutral or Valve (RY2)	Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
13	Pump phase or Valve (RY5) Direct zone 3
14	Pump neutral or Valve (RY5) Direct zone 3
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
23	On/Off Thermostat or Remote Control (RT3) Direct zone 3
24	On/Off Thermostat or Remote Control (RT3) Direct zone 3
27	NTC sensor (T2) Hot water tank probe
28	NTC sensor (T2) Hot water tank probe
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.22 "THREE Direct Zones and ONE Hot water tank – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint if the sliding temperature was activated in one or more zones.

5.24 "ONE MIXED ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
X15	Card SK connected

5.24.1 On/Off Thermostat

The algorithm of the Mixed Zone remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 5.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation and the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). If DHW mode ends before the end of the Mixing valve closing Time timer (TSP31), the timer must be reset, because at the end of DHW mode the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the higher Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.
d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped whereas the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). At the end of DHW mode, post-circulation must not restart.

5.24.2 Remote Control

The algorithm of the Mixed Zone remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 5.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation and the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). If DHW mode ends before the end of the Mixing valve closing Time timer (TSP31), the timer must be reset, because at the end of DHW mode the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the higher Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.

d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped whereas the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). At the end of DHW mode, post-circulation must not restart.

e. DHW setpoint

The range for management of ID56 of the Remote Control (DHW temperature adjustment button) is between 10°C and 65°C: zone card fixed ranges.

Modification of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Control; the zone card takes the last modified value and must update both.

f. DHW Eco/Comfort

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

5.25 "ONE MIXED ZONE AND ONE HOT WATER TANK - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.24 "ONE Mixed Zone and ONE Hot water tank – No External Sensor". What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

5.26 "ONE MIXED ZONE, ONE DIRECT ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection	Description
7	Pump phase (RY1)	Mixed zone 1
8	Pump neutral (RY1)	Mixed zone 1
9	Mixing Valve Opening phase (RY2)	Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
12	Pump phase (RY4)	Direct zone 1
14	Pump neutral (RY5)	Direct zone 1
14	Pump neutral (RY7)	Hot water tank
16	Pump phase (RY7)	Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
23	On/Off Thermostat or Remote Control (RT3)	Direct zone 1
24	On/Off Thermostat or Remote Control (RT3)	Direct zone 1
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
X15	Card SK connected

5.26.1 On/Off Thermostat

The algorithm of the Mixed Zone remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

The algorithm remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 5.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation and the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). If DHW mode ends before the end of the Mixing valve closing Time timer (TSP31), the timer must be reset, because at the end of DHW mode the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.

d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped whereas the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). At the end of DHW mode, post-circulation must not restart.

5.26.2 Remote Control

The algorithm of the Mixed Zone remains the same as the configuration: 5.7 "ONE Mixed Zone – No External Sensor".

The algorithm remains the same as the configuration: 5.1 "ONE Direct Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 5.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation and the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). If DHW mode ends before the end of the Mixing valve closing Time timer (TSP31), the timer must be reset, because at the end of DHW mode the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.

d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped whereas the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). At the end of DHW mode, post-circulation must not restart.

e. DHW setpoint

The range for management of ID56 of the Remote Controls (DHW temperature adjustment button) is between 10°C and 65°C: zone card fixed ranges.

Modification of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Controls; the zone card takes the last modified value and must update the others.

f. DHW Eco/Comfort (1 Remote Control)

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

g. DHW Eco/Comfort (plus 1 Remote Control)

The DHW request generated by T2 is enabled only if all the Remote Controls are in Comfort mode.

5.27 "ONE MIXED ZONE, ONE DIRECT ZONE AND ONE HOT WATER TANK - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Direct zone 1
14	Pump neutral (RY5) Direct zone 1
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
23	On/Off Thermostat or Remote Control (RT3) Direct zone 1
24	On/Off Thermostat or Remote Control (RT3) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
27	NTC sensor (T2) Hot water tank probe
28	NTC sensor (T2) Hot water tank probe
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 5.26 "ONE Mixed Zone, ONE Direct Zone and ONE Hot water tank – No External Sensor". What changes is only the calculation of Zone1 Heating Setpoint and Zone2 Heating Setpoint if the sliding temperature was activated in one or both zones.

6 "STAND ALONE 2" CONFIGURATIONS

6.1 "ONE DIRECT ZONE - NO EXTERNAL SENSOR

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
19	On/Off Thermostat or Remote Control (RT1) Direct Zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

6.1.1 On/Off Thermostat

Zone pump

System circulation (including boiler) is ensured by the zone circulating pump: therefore the boiler does not have to have the circulating pump.

Zone valve

System circulation (including boiler) is ensured by the boiler circulating pump: therefore the boiler must have the circulating pump.

Algorithm

a. Zone card Heating Setpoint = Zone1 Heating Setpoint
b. Zone1 Heating Setpoint = Zona1 Max.Temperature (TSP02) + Zona1 calculated setpoint Offset (TSP03).
c. If RT1 closes the contact, RY1 must be powered; and must remain powered while RT1 remains closed.
The Delay for Zone timer (TSP29) starts: during this time the relay of card SK must be unpowered.
d. At the end of the Delay for Zone timer (TSP29), the Heating standby Time timer (TSP33) must be reset.
If T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered.
If T3 becomes higher than the Zone card Heating Setpoint value plus the Heating Hysteresis value (TSP32), the relay of card SK must be unpowered and, at the same time, the Heating standby Time timer (TSP33) must start.
At the end of the Heating standby Time timer (TSP33), if T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered, otherwise the latter will be powered as soon as T3 is lower than the Zone card Heating Setpoint value.
e. If RT1 opens the contact, the relay of card SK must be unpowered; whereas RY1 must remain powered for the entire duration of the Post-circulation Time timer (TSP27); at the end of this timer, RY1 must be unpowered.

6.1.2 Remote Control

Zone pump

System circulation (including boiler) is ensured by the zone circulating pump: therefore the boiler does not have to have the circulating pump.

Zone valve

System circulation (including boiler) is ensured by the boiler circulating pump: therefore the boiler must have the circulating pump.

Algorithm

a. Zone card Heating Setpoint = Zone1 Heating Setpoint
b. Zone1 Heating Setpoint = Control Setpoint calculated from Remote Control + Zone1 Calculated setpoint Offset (TSP03).
The Control Setpoint calculated from Remote Control is limited by ID57 of the Remote Control itself (Heating temperature adjustment button).
The range for management of the Remote Control ID57 is defined by the parameters: Zone1 Min. Temperature (TSP01) and Zone1 Max. Temperature (TSP02).
c. If RT1 activates the request, RY1 must be powered; and must remain powered while RT1 remains in request status.
The Delay for Zone timer (TSP29) starts: during this time the relay of card SK must be unpowered.

d. At the end of the Delay for Zone timer (TSP29), the Heating standby Time timer (TSP33) must be reset.

If T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered.

If T3 becomes higher than the Zone card Heating Setpoint value plus the Heating Hysteresis value (TSP32), the relay of card SK must be unpowered and, at the same time, the Heating standby Time timer (TSP33) must start.

At the end of the Heating standby Time timer (TSP33), if T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered, otherwise the latter will be powered as soon as T3 is lower than the Zone card Heating Setpoint value.

e. If RT1 deactivates the request, the relay of card SK must be unpowered; whereas RY1 must remain powered for the entire duration of the Post-circulation Time timer (TSP27); at the end of this timer, RY1 must be unpowered.

6.2 "ONE DIRECT ZONE – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

6.2.1 On/Off Thermostat

The algorithm remains the same as the configuration: 6.1 "ONE Direct Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

a. If Zone 1 External Probe Curve (TSP05) is equal to 0.

Zone1 Heating Setpoint = Zone1 Max. Temperature (TSP02) + Zone1 calculated setpoint Offset (TSP03).

b. If Zone 1 External Probe Curve (TSP05) is between 1 and 10.

Zone1 Heating Setpoint = Setpoint calculated from External Probe + Zone1 calculated setpoint Offset (TSP03).

However:

If Zone1 Max. Temperature (TSP02) < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Zone1 Max. Temperature (TSP02).

6.2.2 Remote Control

The algorithm remains the same as the configuration: 6.1 "ONE Direct Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

c. If Zone 1 External Probe Curve (TSP05) is equal to 0.

Zone1 Heating Setpoint = Control Setpoint calculated from Remote Control + Zone1 calculated setpoint Offset (TSP03).

d. If Zone 1 External Probe Curve (TSP05) is between 1 and 10.

Zone1 Heating Setpoint = Setpoint calculated from External Probe + Zone1 calculated setpoint Offset (TSP03).

However:

If Zone1 Max. Temperature (TSP02) < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Zone1 Max. Temperature (TSP02). If Control Setpoint calculated from Remote Control < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Control Setpoint calculated from Remote Control.

6.3 "TWO DIRECT ZONES - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

The algorithm remains the same as the configuration: 6.1 "ONE Direct Zone – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Zone2 Heating Setpoint.

If the zone that ends the request has the higher Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment parameters.
c. Post-circulation time

This must be carried out only on the last zone that ends the request.

Also, if the last zone in request status is doing post-circulation and another zone starts its own request, post-circulation must be stopped: so that there is always and only a single zone in post-circulation.

6.4 "TWO DIRECT ZONES – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.3 "TWO Direct Zones – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint and Zone2 Heating Setpoint if the sliding temperature was activated in one or both zones.

6.5 "THREE DIRECT ZONES - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
13	Pump phase or Valve (RY5) Direct zone 3
14	Pump neutral or Valve (RY5) Direct zone 3
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
23	On/Off Thermostat or Remote Control (RT3) Direct zone 3
24	On/Off Thermostat or Remote Control (RT3) Direct zone 3
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

The algorithm remains the same as the configuration: 6.3 "TWO Direct Zones – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint.

If the zone that ends the request has the highest Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment parameters.

6.6 "THREE DIRECT ZONES – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection	Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
13	Pump phase or Valve (RY5) Direct zone 3
14	Pump neutral or Valve (RY5) Direct zone 3
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
11	On/Off Thermostat or Remote Control (RT2) Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
23	On/Off Thermostat or Remote Control (RT3) Direct zone 3
24	On/Off Thermostat or Remote Control (RT3) Direct zone 3
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.5 "THREE Direct Zones – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint if the sliding temperature was activated in one or more zones.

6.7 "ONE MIXED ZONE - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

6.7.1 On/Off Thermostat

Algorithm

a. Zone card Heating Setpoint = Zone1 Heating Setpoint
b. Zone1 Heating Setpoint = Zona1 Max.Temperature (TSP02) + Zona1 calculated setpoint Offset (TSP03).
c. If RT1 closes the contact, RY1 must be powered; and must remain powered while RT1 remains closed.
The Delay for Zone timer (TSP29) starts: during this time the relay of card SK must be unpowered.
The Mixing Valve Boost timer (TSP20) starts: during this time RY2 must be powered and RY3 must be unpowered.

d. If the Delay for Zone timer (TSP29) is less than the Mixing Valve Boost timer (TSP20), the Delay for Zone timer (TSP29) must be equal to the Mixing Valve Boost timer (TSP20).

e. At the end of Mixing Valve Boost timer (TSP20), the Zone1 mixing valve adjustment algorithm must start; and this while RT1 remains closed. The aim of the microprocessor is to adjust the valve so that the temperature detected by sensor T1 is equal to the Zone1 Max. Temperature value (TSP02). Therefore:

• If the temperature detected by sensor T1 is equal to the Zone1 Max. Temperature value (TSP02), RY2 must be unpowered and RY3 must be unpowered.
• If the temperature detected by sensor T1 is higher than the Zone1 Max. Temperature value (TSP02), RY2 must be unpowered whereas RY3 must be powered according to the following rule: (temperature detected by sensor T1 - Zone1 Max. Temperature value (TSP02)) * Mixing valve On Time timer value for °C (TSP21) each time the Mixing valve On+Off Time timer (TSP19) has expired.
• If the temperature detected by sensor T1 is lower than the Zone1 Max. Temperature value (TSP02), RY3 must be unpowered whereas RY2 must be powered according to the following rule: (Zone1 Max. Temperature value (TSP02) - temperature detected by sensor T1) * Mixing valve On Time timer value for °C (TSP21) each time the Mixing valve On+Off Time timer (TSP19) has expired.

f. At the end of the Delay for Zone timer (TSP29), the Heating standby Time timer (TSP33) must be reset.

If T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered.

If T3 becomes higher than the Zone card Heating Setpoint value plus the Heating Hysteresis value (TSP32), the relay of card SK must be unpowered and, at the same time, the Heating standby Time timer (TSP33) must start.

At the end of the Heating standby Time timer (TSP33), if T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered, otherwise the latter will be powered as soon as T3 is lower than the Zone card Heating Setpoint value.

g. If RT1 opens the contact, the relay of card SK must be unpowered; RY2 must be unpowered, RY3 must remain powered for the entire duration of the Mixing valve closing Time timer (TSP31); whereas RY1 must remain powered for the entire duration of the Post-circulation Time timer (TSP27); at the end of this timer, RY1 must be unpowered.

6.7.2 Remote Control

Algorithm

a. Zone card Heating Setpoint = Zone1 Heating Setpoint
b. Zone1 Heating Setpoint = Control Setpoint calculated from Remote Control + Zone1 Calculated setpoint Offset (TSP03).
The Control Setpoint calculated from Remote Control is limited by ID57 of the Remote Control itself (Heating temperature adjustment button).
The range for management of the Remote Control ID57 is defined by the parameters: Zone1 Min. Temperature (TSP01) and Zone1 Max. Temperature (TSP02).
c. If RT1 activates the request, RY1 must be powered; and must remain powered while RT1 remains in request status.

The Delay for Zone timer (TSP29) starts: during this time the relay of card SK must be unpowered.

The Mixing Valve Boost timer (TSP20) starts: during this time RY2 must be powered and RY3 must be unpowered.

d. If the Delay for Zone timer (TSP29) is less than the Mixing Valve Boost timer (TSP20), the Delay for Zone timer (TSP29) must be equal to the Mixing Valve Boost timer (TSP20).
e. At the end of Mixing Valve Boost timer (TSP20), the Zone1 mixing valve adjustment algorithm must start; and this while RT1 remains in request status. The aim of the microprocessor is to adjust the valve so that the temperature detected by sensor T1 is equal to the Control Setpoint value calculated from Remote Control. Therefore:

• If the temperature detected by sensor T1 is equal to the Control Setpoint value calculated from Remote Control, RY2 must be unpowered and RY3 must be unpowered.
• If the temperature detected by sensor T1 is higher than the Control Setpoint value calculated from Remote Control, RY2 must be unpowered whereas RY3 must be powered according to the following rule: (temperature detected by sensor T1 - Control Setpoint value calculated from Remote Control) * Mixing valve On Time timer value for °C (TSP21) each time the Mixing valve On+Off Time timer (TSP19) has expired.
• If the temperature detected by sensor T1 is lower than the Control Setpoint value calculated from Remote Control, RY3 must be unpowered whereas RY2 must be powered according to the following rule: (Control Setpoint value calculated from Remote Control - temperature detected by sensor T1) * Mixing valve On Time timer value for °C (TSP21) each time the Mixing valve On+Off Time timer (TSP19) has expired
  f. At the end of the Delay for Zone timer (TSP29), the Heating standby Time timer (TSP33) must be reset.

If T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered.

If T3 becomes higher than the Zone card Heating Setpoint value plus the Heating Hysteresis value (TSP32), the relay of card SK must be unpowered and, at the same time, the Heating standby Time timer (TSP33) must start.

At the end of the Heating standby Time timer (TSP33), if T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered, otherwise the latter will be powered as soon as T3 is lower than the Zone card Heating Setpoint value.

g. If RT1 deactivates the request, the relay of card SK must be unpowered; RY2 must be unpowered; RY3 must be powered for the entire duration of the Mixing valve closing Time timer (TSP31); whereas RY1 must remain powered for the entire duration of the Post-circulation Time timer (TSP27); at the end of this timer, RY1 must be unpowered.

6.8 "ONE MIXED ZONE – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
29	NTC sensor (T3)	Heating delivery
30	NTC sensor (T3)	Heating delivery
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

6.8.1 On/Off Thermostat

The algorithm remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

a. If Zone 1 External Probe Curve (TSP05) is equal to 0.

Zone1 Heating Setpoint = Zone1 Max. Temperature (TSP02) + Zone1 calculated setpoint Offset (TSP03).

b. If Zone 1 External Probe Curve (TSP05) is between 1 and 10.

Zone1 Heating Setpoint = Setpoint calculated from External Probe + Zone1 calculated setpoint Offset (TSP03).

However:

If Zone1 Max. Temperature (TSP02) < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Zone1 Max. Temperature (TSP02).

6.8.2 Remote Control

The algorithm remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

a. If Zone 1 External Probe Curve (TSP05) is equal to 0.

Zone1 Heating Setpoint = Control Setpoint calculated from Remote Control + Zone1 calculated setpoint Offset (TSP03).

b. If Zone 1 External Probe Curve (TSP05) is between 1 and 10.

Zone1 Heating Setpoint = Setpoint calculated from External Probe + Zone1 calculated setpoint Offset (TSP03).

However:

If Zone1 Max. Temperature (TSP02) < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Zone1 Max. Temperature (TSP02).

If Control Setpoint calculated from Remote Control < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Control Setpoint cal-

culated from Remote Control.

6.9 "TWO MIXED ZONES - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
8	Pump neutral (RY4) Mixed zone 2
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Mixed zone 2
13	Mixing Valve Opening phase (RY5) Mixed zone 2
14	Mixing Valve neutral (RY5) Mixed zone 2
15	Mixing Valve Closing phase (RY6) Mixed zone 2
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Mixed zone 2
22	On/Off Thermostat or Remote Control (RT2) Mixed zone 2
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
27	NTC sensor (T2) Mixed zone 2 delivery
28	NTC sensor (T2) Mixed zone 2 delivery
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

The algorithm remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Zone2 Heating Setpoint.

If the zone that ends the request has the higher Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment sensors and parameters.
c. Post-circulation time

This must be carried out only on the last zone that ends the request.

Also, if the last zone in request status is doing post-circulation and another zone starts its own request, post-circulation must be stopped whereas the mixing valve must be closed for the entire duration of the Mixing valve closing Time timer (TSP31): so that there is always and only a single zone in post-circulation.

6.10 "TWO MIXED ZONES – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1)	Mixed zone 1
8	Pump neutral (RY1)	Mixed zone 1
8	Pump neutral (RY4)	Mixed zone 2
9	Mixing Valve Opening phase (RY2)	Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
12	Pump phase (RY4)	Mixed zone 2
13	Mixing Valve Opening phase (RY5)	Mixed zone 2
14	Mixing Valve neutral (RY5)	Mixed zone 2
15	Mixing Valve Closing phase (RY6)	Mixed zone 2
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2)	Mixed zone 2
22	On/Off Thermostat or Remote Control (RT2)	Mixed zone 2
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
27	NTC sensor (T2)	Mixed zone 2 delivery
28	NTC sensor (T2)	Mixed zone 2 delivery
29	NTC sensor (T3)	Heating delivery
30	NTC sensor (T3)	Heating delivery
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.9 "TWO Mixed Zones – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint and Zone2 Heating Setpoint if the sliding temperature was activated in one or both zones.

6.11 "ONE MIXED ZONE AND ONE DIRECT ZONE - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Direct Zone 1
14	Pump neutral (RY5) Direct Zone 1
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 1
22	On/Off Thermostat or Remote Control (RT2) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

The algorithm remains the same as the configuration: 6.1 "ONE Direct Zone – No External Sensor".

The algorithm of the Mixed Zone remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Zone2 Heating Setpoint.

If the zone that ends the request has the higher Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment sensors and parameters.
c. Post-circulation time

This must be carried out only on the last zone that ends the request.

Also, if the last zone in request status is doing post-circulation and another zone starts its own request, post-circulation must be stopped whereas the mixing valve must be closed for the entire duration of the Mixing valve closing Time timer (TSP31): so that there is always and only a single zone in post-circulation.

6.12 "ONE MIXED ZONE AND ONE DIRECT ZONE - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Direct zone 1
14	Pump neutral (RY5) Direct zone 1
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 1
22	On/Off Thermostat or Remote Control (RT2) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.11 "ONE Mixed Zone and ONE Direct Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint and Zone2 Heating Setpoint if the sliding temperature was activated in one or both zones.

6.13 "ONE MIXED ZONE AND TWO DIRECT ZONES - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1)	Mixed zone 1
8	Pump neutral (RY1)	Mixed zone 1
9	Mixing Valve Opening phase (RY2)	Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
12	Pump phase (RY4)	Direct zone 1
13	Pump phase (RY5)	Direct zone 2
14	Pump neutral (RY5) Direct zone 1
14	Pump neutral (RY5) Direct zone 2
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Direct zone 1
22	On/Off Thermostat or Remote Control (RT2) Direct zone 1
23	On/Off Thermostat or Remote Control (RT2) Direct zone 1
24	On/Off Thermostat or Remote Control (RT2) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

The algorithm of Direct Zone1 remains the same as the configuration: 6.1 "ONE Direct Zone – No External Sensor". The algorithm of Direct Zone2 remains the same as the configuration: 6.1 "ONE Direct Zone – No External Sensor". The algorithm of the Mixed Zone remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint.

If the zone that ends the request has the highest Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment sensors and parameters.
c. Post-circulation time

This must be carried out only on the last zone that ends the request.

Also, if the last zone in request status is doing post-circulation and another zone starts its own request, post-circulation must be stopped whereas the mixing valve must be closed for the entire duration of the Mixing valve closing Time timer (TSP31): so that there is always and only a single zone in post-circulation.

6.14 "ONE MIXED ZONE AND TWO DIRECT ZONES - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
12	Pump phase (RY4) Direct zone 1
13	Pump phase (RY5) Direct zone 2
14	Pump neutral (RY5) Direct zone 1
14	Pump neutral (RY5) Direct zone 2
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2)	Direct zone 1
22	On/Off Thermostat or Remote Control (RT2)	Direct zone 1
23	On/Off Thermostat or Remote Control (RT2)	Direct zone 1
24	On/Off Thermostat or Remote Control (RT2)	Direct zone 1
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
29	NTC sensor (T3)	Heating delivery
30	NTC sensor (T3)	Heating delivery
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.13 "ONE Mixed Zone and TWO Direct Zones – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint if the sliding temperature was activated in one or more zones.

6.15 "TWO MIXED ZONES AND ONE DIRECT ZONE - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
8	Pump neutral (RY4) Mixed zone 2
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
12	Pump phase (RY4) Mixed zone 2
13	Mixing Valve Opening phase (RY5) Mixed zone 2
14	Mixing Valve neutral (RY5) Mixed zone 2
14	Pump neutral (RY7) Direct zone 1
15	Mixing Valve Closing phase (RY6) Mixed zone 2
16	Pump phase (RY7) Direct zone 1
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Mixed zone 2
22	On/Off Thermostat or Remote Control (RT2) Mixed zone 2
23	On/Off Thermostat or Remote Control (RT3) Direct zone 1
24	On/Off Thermostat or Remote Control (RT3) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
27	NTC sensor (T2) Mixed zone 2 delivery
28	NTC sensor (T2) Mixed zone 2 delivery
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

The algorithm of Direct Zone1 remains the same as the configuration: 6.1 "ONE Direct Zone – No External Sensor".

The algorithm of Mixed Zone1 remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

The algorithm of Mixed Zone2 remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

What changes is:

a. The calculation of Zone card Heating Setpoint

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint.

If the zone that ends the request has the highest Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating Setpoint of the zone still in request status.

If the zone that starts the request has a higher Heating Setpoint than the zone already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Heating Setpoint of the zone in request status.

b. Each zone has its own adjustment sensors and parameters.
c. Post-circulation time

This must be carried out only on the last zone that ends the request.

Also, if the last zone in request status is doing post-circulation and another zone starts its own request, post-circulation must be stopped whereas the mixing valve must be closed for the entire duration of the Mixing valve closing Time timer (TSP31): so that there is always and only a single zone in post-circulation.

6.16 "TWO MIXED ZONES AND ONE DIRECT ZONE - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
8	Pump neutral (RY4) Mixed zone 2
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Mixed zone 2
13	Mixing Valve Opening phase (RY5) Mixed zone 2
14	Mixing Valve neutral (RY5) Mixed zone 2
14	Pump neutral (RY7) Direct zone 1
15	Mixing Valve Closing phase (RY6) Mixed zone 2
16	Pump phase (RY7) Direct zone 1
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
21	On/Off Thermostat or Remote Control (RT2) Mixed zone 2
22	On/Off Thermostat or Remote Control (RT2) Mixed zone 2
23	On/Off Thermostat or Remote Control (RT3) Direct zone 1
24	On/Off Thermostat or Remote Control (RT3) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
27	NTC sensor (T2) Mixed zone 2 delivery
28	NTC sensor (T2) Mixed zone 2 delivery
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.15 "TWO Mixed Zones and ONE Direct Zone – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint if the sliding temperature was activated in one or

more zones.

6.17 "ONE HOT WATER TANK"

Autoconfi guration:

Connection Description
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
27	NTC sensor (T2) Hot water tank probe
28	NTC sensor (T2) Hot water tank probe
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

Algorithm

a. DHW Setpoint = Hot water tank Setpoint (TSP26).
b. Zone card Heating Setpoint = Hot water tank Primary Setpoint (TSP23).
c. If T2 becomes lower than the DHW Setpoint minus the value of the Hot water tank Hysteresis parameter (TSP22), DHW mode starts.
d. If T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered, otherwise the latter will be powered as soon as T3 is lower than the Zone card Heating Setpoint value.
If T3 becomes higher than the Zone card Heating Setpoint value plus the Heating Hysteresis value (TSP32), the relay of card SK must be unpowered.
e. RT7 must be powered if T3 is higher than the value of the Pump start Temperature parameter (TSP24); RY7 must be unpowered if T3 is lower than the value of the Pump start Temperature parameter (TSP24) – 5°C. While DHW mode is active.
f. The DHW mode ends when T2 becomes higher than the DHW Setpoint: the relay of card SK must be unpowered and RY7 must be unpowered after 2 minutes.

6.18 "ONE DIRECT ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1)	Direct zone 1
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7)	Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
20	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
29	NTC sensor (T3)	Heating delivery
30	NTC sensor (T3)	Heating delivery
X15	Card SK connected

6.18.1 On/Off Thermostat

The algorithm of Direct Zone1 remains the same as the configuration: 6.1 "ONE Direct Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 6.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.
During DHW mode, the algorithm of the Hot water tank has the highest priority.
During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.
b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.
In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).
If the circuit (Heating or Hot water tank) that ends the request has the higher Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.
If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.
c. Each zone has its own adjustment parameters.
d. Post-circulation time
During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

6.18.2 Remote Control

The algorithm of Direct Zone1 remains the same as the configuration: 6.1 "ONE Direct Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 6.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.
During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the higher Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.

d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

e. DHW setpoint

The range for management of ID56 of the Remote Control (DHW temperature adjustment button) is between 10°C and 65°C: zone card fixed ranges. Modification of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Control; the zone card takes the last modified value and must update both.

f. DHW Eco/Comfort

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

6.19 "ONE DIRECT ZONE AND ONE HOT WATER TANK - WITH EXTERNAL SENSOR".

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
14	Pump neutral (RY7)	Hot water tank
16	Pump phase (RY7)	Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
20	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
29	NTC sensor (T3)	Heating delivery
30	NTC sensor (T3)	Heating delivery
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.18 "ONE Direct Zone and ONE Hot water tank – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

6.20 "TWO DIRECT ZONES AND ONE HOT WATER TANK - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
14	Pump neutral (RY7)	Hot water tank
16	Pump phase (RY7)	Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
20	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
21	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
22	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
29	NTC sensor (T3)	Heating delivery
30	NTC sensor (T3)	Heating delivery
X15	Card SK connected

6.20.1 On/Off Thermostat

The algorithm of the Direct zones remains the same as the configuration: 6.3 "TWO Direct Zones – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 6.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must

restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.

d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

6.20.2 Remote Control

The algorithm of the Direct zones remains the same as the configuration: 6.3 "TWO Direct Zones – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 6.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.

d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

e. DHW setpoint

The range for management of ID56 of the Remote Controls (DHW temperature adjustment button) is between 10°C and 65°C: zone card fixed ranges.

Modification of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Controls; the zone card takes the last modified value and must update the others.

f. DHW Eco/Comfort (1 Remote Control)

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

g. DHW Eco/Comfort (plus 1 Remote Control)

The DHW request generated by T2 is enabled only if all the Remote Controls are in Comfort mode.

6.21 "TWO DIRECT ZONES AND ONE HOT WATER TANK - WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
20	On/Off Thermostat or Remote Control (RT1)	Direct zone 1
11	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
22	On/Off Thermostat or Remote Control (RT2)	Direct zone 2
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
29	NTC sensor (T3)	Heating delivery
30	NTC sensor (T3)	Heating delivery
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.20 "TWO Direct Zones and ONE Hot water tank – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint and Zone2 Heating Setpoint if the sliding temperature was activated in one or both zones.

6.22 "THREE DIRECT ZONES AND ONE HOT WATER TANK - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
13	Pump phase or Valve (RY5) Direct zone 3
14	Pump neutral or Valve (RY5) Direct zone 3
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
11	On/Off Thermostat or Remote Control (RT2) Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
23	On/Off Thermostat or Remote Control (RT3) Direct zone 3
24	On/Off Thermostat or Remote Control (RT3) Direct zone 3
27	NTC sensor (T2) Hot water tank probe
28	NTC sensor (T2) Hot water tank probe
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

6.22.1 On/Off Thermostat

The algorithm of the Direct zones remains the same as the configuration: 6.6 "THREE Direct Zones – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 6.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint, Zone3 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.
d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.

6.22.2 Remote Control

The algorithm of the Direct zones remains the same as the configuration: 6.6 "THREE Direct Zones – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 6.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.
During DHW mode, the algorithm of the Hot water tank has the highest priority.
During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation. At the end of DHW mode, the zone request (if occurring) must restart with the normal algorithm.
b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.
In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint, Zone3 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).
If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.
If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.
c. Each zone has its own adjustment parameters.
d. Post-circulation time
During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped. At the end of DHW mode, post-circulation must not restart.
e. DHW setpoint

The range for management of ID56 of the Remote Controls (DHW temperature adjustment button) is between 10°C and 65°C: zone card fixed ranges.

Modification of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Controls; the zone card takes the last modified value and must update the others.

f. DHW Eco/Comfort (1 Remote Control)

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

g. DHW Eco/Comfort (plus 1 Remote Control)

The DHW request generated by T2 is enabled only if all the Remote Controls are in Comfort mode.

6.23 "THREE DIRECT ZONES AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase or Valve (RY1) Direct zone 1
8	Pump neutral or Valve (RY1) Direct zone 1
10	Pump neutral or Valve (RY2) Direct zone 2
12	Pump phase or Valve (RY4) Direct zone 2
13	Pump phase or Valve (RY5) Direct zone 3
14	Pump neutral or Valve (RY5) Direct zone 3
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1) Direct zone 1
20	On/Off Thermostat or Remote Control (RT1) Direct zone 1
11	On/Off Thermostat or Remote Control (RT2) Direct zone 2
22	On/Off Thermostat or Remote Control (RT2) Direct zone 2
23	On/Off Thermostat or Remote Control (RT3) Direct zone 3
24	On/Off Thermostat or Remote Control (RT3) Direct zone 3
27	NTC sensor (T2) Hot water tank probe
28	NTC sensor (T2) Hot water tank probe
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
30	NTC sensor (T4) External probe
31	NTC sensor (T4) External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.22 "THREE Direct Zones and ONE hot water tank – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint, Zone2 Heating Setpoint and Zone3 Heating Setpoint if the sliding temperature was activated in one or more zones.

6.24 "ONE MIXED ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection	Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2)	Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
27	NTC sensor (T2) Hot water tank probe
28	NTC sensor (T2) Hot water tank probe
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

6.24.1 On/Off Thermostat

The algorithm of the Mixed Zone remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 6.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation and the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). If DHW mode ends before the end of the Mixing valve closing Time timer (TSP31), the timer must be reset, because at the end of DHW mode the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the higher Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.
d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped whereas the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). At the end of DHW mode, post-circulation must not restart.

6.24.2 Remote Control

The algorithm of the Mixed Zone remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 6.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation and the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). If DHW mode ends before the end of the Mixing valve closing Time timer (TSP31), the timer must be reset, because at the end of DHW mode the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the higher Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.

d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped whereas the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). At the end of DHW mode, post-circulation must not restart.

e. DHW setpoint

The range for management of ID56 of the Remote Control (DHW temperature adjustment button) is between 10°C and 65°C: zone card fixed ranges.

Modification of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Control; the zone card takes the last modified value and must update both.

f. DHW Eco/Comfort

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

6.25 "ONE MIXED ZONE AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2)	Mixed zone 1
10	Mixing Valve neutral (RY2)	Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
29	NTC sensor (T3)	Heating delivery
30	NTC sensor (T3)	Heating delivery
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.24 "ONE Mixed Zone and ONE hot water tank – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

6.26 "ONE MIXED ZONE, ONE DIRECT ZONE AND ONE HOT WATER TANK - NO EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3) Mixed zone 1
12	Pump phase (RY4) Direct zone 1
14	Pump neutral (RY5) Direct zone 1
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1) Mixed zone 1
23	On/Off Thermostat or Remote Control (RT3) Direct zone 1
24	On/Off Thermostat or Remote Control (RT3) Direct zone 1
25	NTC sensor (T1) Mixed zone 1 delivery
26	NTC sensor (T1) Mixed zone 1 delivery
27	NTC sensor (T2) Hot water tank probe
28	NTC sensor (T2) Hot water tank probe
29	NTC sensor (T3) Heating delivery
30	NTC sensor (T3) Heating delivery
X15	Card SK connected

6.26.1 On/Off Thermostat

The algorithm of the Mixed Zone remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

The algorithm remains the same as the configuration: 6.1 "ONE direct Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 6.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation and the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). If DHW mode ends before the end of the Mixing valve closing Time timer (TSP31), the timer must be reset, because at the end of DHW mode the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.
d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped whereas the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). At the end of DHW mode, post-circulation must not restart.

6.26.2 Remote Control

The algorithm of the Mixed Zone remains the same as the configuration: 6.7 "ONE Mixed Zone – No External Sensor".

The algorithm remains the same as the configuration: 6.1 "ONE Direct Zone – No External Sensor".

The algorithm of the Hot water tank remains the same as the configuration: 6.17 "ONE Hot water tank".

What changes is:

a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.

During DHW mode, the algorithm of the Hot water tank has the highest priority.

During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation and the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). If DHW mode ends before the end of the Mixing valve closing Time timer (TSP31), the timer must be reset, because at the end of DHW mode the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Hot water tank Primary Setpoint (TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the highest Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.
d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped whereas the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). At the end of DHW mode, post-circulation must not restart.

e. DHW setpoint

The range for management of ID56 of the Remote Controls (DHW temperature adjustment button) is between 10°C and 65°C: zone card fixed ranges.

Modification of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Controls; the zone card takes the last modified value and must update the others.

f. DHW Eco/Comfort (1 Remote Control)

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

g. DHW Eco/Comfort (plus 1 Remote Control)

The DHW request generated by T2 is enabled only if all the Remote Controls are in Comfort mode.

6.27 "ONE MIXED ZONE, ONE DIRECT ZONE AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR"

Autoconfi guration:

Connection Description
7	Pump phase (RY1) Mixed zone 1
8	Pump neutral (RY1) Mixed zone 1
9	Mixing Valve Opening phase (RY2) Mixed zone 1
10	Mixing Valve neutral (RY2) Mixed zone 1
11	Mixing Valve Closing phase (RY3)	Mixed zone 1
12	Pump phase (RY4) Direct zone 1
14	Pump neutral (RY5) Direct zone 1
14	Pump neutral (RY7) Hot water tank
16	Pump phase (RY7) Hot water tank
19	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
20	On/Off Thermostat or Remote Control (RT1)	Mixed zone 1
23	On/Off Thermostat or Remote Control (RT3)	Direct Zone 1
24	On/Off Thermostat or Remote Control (RT3)	Direct Zone 1
25	NTC sensor (T1)	Mixed zone 1 delivery
26	NTC sensor (T1)	Mixed zone 1 delivery
27	NTC sensor (T2)	Hot water tank probe
28	NTC sensor (T2)	Hot water tank probe
29	NTC sensor (T3)	Heating delivery
30	NTC sensor (T3)	Heating delivery
30	NTC sensor (T4)	External probe
31	NTC sensor (T4)	External probe
X15	Card SK connected

The algorithm remains the same as the configuration: 6.26 "ONE Mixed Zone, ONE Direct Zone and ONE Hot water tank – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint and Zone2 Heating Setpoint if the sliding temperature was activated in one or both zones.

7 "COMMUNICATING" CONFIGURATIONS

The number of these configurations and their algorithms remain the same as the "Stand Alone 1" configurations; what changes is the way in which controller FZ4B requests heat. In place of card SK, there will be the OpenTherm connection with the boiler board (BLR).

The variable defined Zone card Heating Setpoint, which in "Stand Alone 1" configurations is used to activate or deactivate the relay of card SK, will be sent to the boiler board as Control Setpoint.

7.1 "COMMUNICATING" CONFIGURATIONS WITH DHW (INTEGRATED IN BOILER)

a. DHW has priority over Heating: the parameter zone pump Status with boiler in DHW mode (TSP28) is equal to 0.

When the boiler is in DHW mode, the zone request (if occurring) must be stopped without doing post-circulation and the mixing valve must be controlled in closing for the entire duration of the Mixing valve closing Time timer (TSP31). If DHW mode ends before the end of the Mixing valve closing Time timer (TSP31), the timer must be reset, because at the end of DHW mode the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

The controller will not change anything while boiler is in DHW mode.

8 SERVICE MENU

Press the Ok button for 5 seconds to access the zone controller Service Menu. Press the + and - buttons to select "tS", "In", "Hi" or "rE." tS" means Transparent Parameters Menu, "In" Information Menu, "Hi" History Menu (of the zone controller), and "rE" History Menu Reset (of the zone controller). After selecting the Menu, press the Ok button to access it.

"TS" - TRANSPARENT PARAMETERS MENU

The zone controller is equipped with 38 transparent parameters also modifiable from Remote Control (Service Menu):

Com.Rem.	Board FZ4B	Boiler Board (If arr.)	Description of Transparent Parameters	Range Default
01 P01			Zone1 Min. Temperature	20-90°C 20°C
02 P02			Zone1 Max. Temperature	20-90°C 40°C
03 P03			Zone1 calculated setpoint offset	0-40°C 10°C
04 P04			Not implemented	10-90°C 90°C
05 P05		o01 Zone1 External Probe Curve		0-10 0
06 P06		o02 Zone1 External Probe Offset		20-40°C 30°C
07 P07			Zone2 Min. Temperature	20-90°C 20°C
08 P08			Zone2 Max. Temperature	20-90°C 40°C
09 P09			Zone2 calculated set point offset	0-40°C 0°C
10 P10			Not implemented	10-90°C 90°C
11 P11		o03 Zone2 External Probe Curve		0-10 0
12 P12		o04 Zone2 External Probe Offset		20-40°C 30°C
13 P13			Zone3 Min. Temperature	20-90°C 20°C
14 P14			Zone3 Max. Temperature	20-90°C 80°C
15 P15			Zone3 calculated setpoint offset	0-40°C 0°C
16 P16			Not implemented	10-90°C 90°C
17 P17		o05 Zone3 External Probe Curve		0-10 0
18 P18		o06 Zone3 External Probe Offset		20-40°C 30°C
19 P19			Mixing valve on+off time (Only for Mixed Zones)	0-15sec 15
20 P20			Mixing valve Boost (Only for Mixed Zones)	0-120sec 0sec
21 P21			Mixing valve on+off time for °C (Only for Mixed Zones)	00-15°C/sec 1sec/°C
22 P22			Hot water tank hysteresis	0-20°C 4°C
23 P23			Hot water tank Primary setpoint (Excluding "Stand Alone 1" configurations)	70-85°C 80°C
24 P24			Pump start temperature (Excluding "Stand Alone 1" configurations)	0-60°C 0°C
25 P25			Hot water tank priority	0=Off, 1=On	0=Off
26 P26			Hot water tank setpoint (Only without Remote Control)	10-65°C 55°C
27 P27			Post-circulation time	0-20min	10min
28 P28			Zone pumps status with boiler in DHW mode (Only for "Communicating" configurations with DHW)	0=Off, 1=On	0=Off
29 P29			Delay for Zone	0-255sec 30sec
30 P30			Equal settings for each zone	0=Off, 1=On	0=Off
31 P31			Mixing valve Closing time	0-3min	3min
32 P32			Heating hysteresis (Only for "Stand Alone 2" configurations)	0-10°C 5°C
33 P33			Heating standby time (Only for "Stand Alone 2" configurations)	0-10min	2min
34 P34			Pump activation with card in standby	0=Off, 1=On	0=Off
35 P35			Heating delivery probe enabling (Only for "Stand Alone 2" configurations)	0=Off, 1=On	0=Off
36 P36			Operation with boiler in fault status	0=Off, 1=On	0=Off
37 P37			Legionella protection	0=Off, 1-7	0=Off
38 P38			Boiler Summer/Winter mode	0=On, 1=Off	0=On

Press the + and - buttons to scroll the list of parameters in increasing or decreasing order respectively. To modify the value of a parameter, just press the Ok button after selecting it: press the + and - buttons to modify it; the setting will be automatically saved. Press the Ok button to return to the list of parameters. Press the Ok button for 3 seconds to return to the Service Menu. Press the Ok button for 5 seconds to exit the card Service Menu, or exiting occurs automatically after 15 minutes.

"IN" - INFORMATION MENU

The card can display the following information:

t01	NTC sensor (T1)	between 05 and 125 °C
t02	NTC sensor (T2)	between 05 and 125 °C
t03	NTC sensor (T3)	between 05 and 125 °C
t04	NTC sensor (T4)	between -30 and 70°C (Negative values flash)
t05	On/Off Thermostat request or Room temperature measured by Remote Control (RT1) ON/OFF	or between 05 and 125 °C
t06	On/Off Thermostat request or Room temperature measured by Remote Control (RT2) ON/OFF	or between 05 and 125 °C
t07	On/Off Thermostat request or Room temperature measured by Remote Control (RT3) ON/OFF	or between 05 and 125 °C
t08	Zone1 Heating set point (Calculation)	between 05 and 125 °C
t09	Zone2 Heating set point (Calculation)	between 05 and 125 °C
t10	Zone3 Heating set point (Calculation)	between 05 and 125 °C
t11	Zone Card Heating set point (Calculation)	between 05 and 125 °C

Press the + and - buttons to scroll the list of information in increasing or decreasing order respectively. To display the value of a parameter, press the Ok button after selecting it: in case of damaged Sensor, the card will display hyphens. Press the Ok button to return to the list of parameters. Press the Ok button for 3 seconds to return to the Service Menu. Press the Ok button for 5 seconds to exit the card Service Menu, or exiting occurs automatically after 15 minutes.

"HI" - HISTORY MENU

The card can store the last 10 faults: the History datum item H1 represents the most recent fault that occurred, whereas the History datum item H10 represents the least recent. The codes of the faults saved are also displayed in the corresponding menu of the Remote Control.

Press the + and - buttons to scroll the list of faults. To display the value of a parameter, press the Ok button after selecting it.

Press the Ok button for 3 seconds to return to the Service Menu. Press the Ok button for 5 seconds to exit the card Service Menu, or exiting occurs automatically after 15 minutes.

"RE" - HISTORY RESET

By pressing the Ok button for 3 seconds it will be possible to delete all the faults stored in the History Menu: the card will automatically exit the Service Menu, in order to confirm the operation.

Press the Ok button for 3 seconds to return to the Service Menu.

9 INDICATIONS DURING OPERATION

The controller indicates the boiler operating mode and its faults through the incorporated display: "St" means Standby (no request in progress), "CH" means that the zone controller requests activation of heating mode, "dH" means Domestic Hot Water production. The fault codes are:

F70	NTC sensor fault (T1) Short circuit / Contact open
F71	NTC sensor fault (T2) Short circuit / Contact open
F72	NTC sensor fault (T3) Short circuit / Contact open
F73	NTC sensor fault (T4) Short circuit / Contact open (Only with Sliding Temperature enabled)
F74	Communication with boiler board (BLR) not present	(Only for "Communicating" configurations)
F75	Communication with Remote Control (RT1) not present (Only with Remote Control connected)
F76	Communication with Remote Control (RT2) not present (Only with Remote Control connected)
F77	Communication with Remote Control (RT3) not present (Only with Remote Control connected)

The fault codes are also displayed in the corresponding menu of the Remote Control during normal operation.

9.1 LCD DISPLAY OFF

Make sure the Controller is powered: using a digital multimeter, check the presence of voltage at terminals 5 and 6.

In case of no voltage, check the wiring.

In case of sufficient voltage (Range 195–253 Vac), check the fuse FH02 (see fig. 2).

10 ADDITIONAL FUNCTIONS

10.1 FH MODE

The FH mode is automatically activated the first time the card is powered or after doing the Autoconfiguration procedure. The FH mode must last for a time equal to the Mixing valve closing Time timer (TSP31): during this time, the circulating pumps (of the heating zones) will be powered; whereas the mixing valves (if foreseen at the time of Autoconfiguration) must be open for a time equal to one third the Mixing valve closing Time timer (TSP31) and subsequently closed for a time equal to two thirds the Mixing valve closing Time timer (TSP31).

During FH mode the card must not request heat.

In the first 5 seconds of FH mode, the display will show the card software version. The Service Menu can be accessed in FH mode. The FH mode can be stopped by pressing the + button once.

10.2 EQUAL SETTINGS FOR EACH ZONE (TSP30)

This parameter will only be considered if, after Autoconfiguration, the zone controller is configured to serve two or more heating circuits of the same type. In this case, if the parameter is equal to 1, all the heating circuits take the settings of heating circuit 1.

10.3 PUMP ACTIVATION WITH CARD IN STANDBY (TSP34)

This parameter will only be considered if, after Autoconfiguration, the zone controller is configured in "Communicating" mode. In this case, if the parameter is equal to 1: if the zone card is in standby and the boiler board is activated in heating, the zone controller must activate all the circulating pumps and force open all the connected mixing valves (if foreseen at the time of autoconfi guration).

10.4 HEATING DELIVERY PROBE ENABLING (TSP35)

This parameter will only be considered if, after Autoconfiguration, the zone controller is configured in "Stand Alone 1 or 2" mode. Set to 0 in case of "Stand Alone 1" configurations. Set to 1 in case of "Stand Alone 2" configurations.

Note: After modifying this parameter, disconnect then reconnect the power to controller FZ4B

10.5 OPERATION WITH BOILER IN FAULT STATUS (TSP36)

This parameter will only be considered if, after Autoconfiguration, the zone controller is configured in "Communicating" mode. If the parameter is set to 0, board FX4B requests are stopped in the event of a boiler board fault. If the parameter is set to 1, board FX4B requests are not stopped in the event of a boiler board fault.

Note: After modifying this parameter, disconnect then reconnect the power to controller FZ4B

10.6 LEGIONELLA PROTECTION (TSP37)

This parameter will only be considered if, after Autoconfiguration, the zone controller is configured to serve a hot water tank. When set to 0, the protection is disabled. When set between 1 and 7, the parameter expresses the interval in days between one activation and the next: 1 means 24 hours, 7 means 168 hours. After this time, a timer is activated for 15 minutes, during which the user setpoint is set to the maximum value (65°C).

10.7 BOILER SUMMER/WINTER MODE (TSP38)

This parameter will only be considered if, after Autoconfiguration, the zone controller is configured in "Communicating" mode. The parameter is normally left at 0. It is set to 1 only if the board FZ4B is connected to the following controllers: CPD3, CPD4, MF05F or equivalent.

Note: After modifying this parameter, disconnect then reconnect the power to controller FZ4B

10.8 ANTIBLOCKING

10.8.1 Circulating pump Antiblocking

After 24 hours of inactivity, the system circulating pumps are activated for 5 seconds.

10.8.2 Mixing Valve Antiblocking

After 24 hours of inactivity, the mixing valves must be opened for a time equal to the Mixing valve closing Time timer (TSP31) and subsequently closed for a time equal to the Mixing valve closing Time timer (TSP31).

10.9 SENSOR CHARACTERISTICS

The temperature sensors can be controlled by a digital multimeter: disconnect the sensor from the controller and check correspondence with the following table.

NTC
T (°C)	R (Ω)
-10 54932
-5 42080
0 32505
5 25308
10 19854
15 15689
20 12483
25 9999
30 8060
35 6537
40 5332
45 4374
50 3608
55 2991
60 2492
65 2086
70 1754
75 1481
80 1257
85 1070
90 915
95 785
100 677
105 585
110 507
115 442

10.10 USER SETTINGS

The settings for Heating, such as max. delivery temperature, external probe curve (with optional external probe connected to the boiler), weekly time programming, etc., are independent for each zone; these are modified through the Remote Control of the corresponding temperature zone. In case of direct zones, make sure to set a similar max. delivery temperature for all the temperature zones. With Room Chronothermostats, on closing of the contact the delivery temperature will be adjusted to the max. value set by the zone controller. The settings relevant to DHW, such as DHW temperature, Economy/Comfort mode, weekly time programming (with boiler arranged: see the relevant documentation), etc., are managed in parallel; these are modified through the Remote Controls of the temperature zones. In case of DHW weekly time programming, the zone controller overlaps programmes coming from the single Remote Controls.

10.11 EXTERNAL PROBE/ SLIDING TEMPERATURE

The connection to the external probe must be made when it cannot be connected to the boiler board.

7

SEPARATELY SETTABLE FOR EACH INDIVIDUAL ZONE:

THE CURVES (FROM 1 TO 10) ARE CHOSEN WITH THE PARAMETERS:

P05 = CURVE ZONE 1

P11 = CURVE ZONE 2

P17 = CURVE ZONE 3

THE OFFSET (PARALLEL OFFSET) IS CHOSEN FOR EACH INDIVIDUAL ZONE WITH THE PARAMETERS:

P06 = OFFSET ZONE 1

P12 = OFFSET ZONE 2

P18 = OFFSET ZONE 3

OFFSET = 20 OFFSET = 40

In case of external probe fault (error F73), the system will work with the set heating setpoint.

1. VUE D'ENSEMBLE

VUE EXTÉRIEURE ET DIMENSIONS BOÎTIER

207 mm 163 mm 54 mm

Fig. 1

VUE INTÉRIEURE CARTE

TS1 FHO1 FHO2 L-N L-N L-L L-N L-L X01 X02 X03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 L- N L-N L-N L-L L-N L-L C01 C03 C04 Q01 Q02 Q03 UO3 DIP1 UO1 UO2 C01 C03 Q01 Q02 Q03 Q04 Q05 Q06 Q07 Q08 Q09 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20 Q21 Q22 Q23 Q24 Q25 Q26 Q27 Q28 Q29 Q30 Q31 Q32 Q33 Q34 Q35 Q36 Q37 Q38 Q39 Q40 Q41 Q42 Q43 Q44 Q45 Q46 Q47 Q48 Q49 Q50 Q51 Q52 Q53 Q54 Q55 Q56 Q57 Q58 Q59 Q60 Q61 Q62 Q63 Q64 Q65 Q66 Q67 Q68 Q69 Q70 Q71 Q72 Q73 Q74 Q75 Q76 Q77 Q78 Q79 Q80 Q81 Q82 Q83 Q84 Q85 Q86 Q87 Q88 Q89 Q90 Q91 Q92 Q93 Q94 Q95 Q96 Q97 Q98 Q99 SIX 1X 2X 3X 4X 5X 6X 7X 8X 9X 10X 11X 12X 13X 14X 15X 16X 17X 18X 19X 20X 21X 22X 23X 24X 25X 26X 27X 28X 29X 30X 31X 32X 33X 34X 35X 36X 37X 38X 39X 40X 41X 42X 43X 44X 45X 46X 47X 48X 49X 50X 51X 52X 53X 54X 55X 56X 57X 58X 59X 60X 61X 62X 63X 64X 65X 66X 67X 68X 69X 70X 71X 72X 73X 74X 75X 76X 77X 78X 79X 80X 81X 82X 83X 84X 85X 86X 87X 88X 89X 90X 91X 92X 93X 94X 95X 96X 97X 98X 99X T3 T4 BLR

Fig. 2

Légende

1 Afficheur LCD

5 Touche CONFIGURATION AUTOMATIQUE

2 Touche +

Technical diagram showing a mechanical assembly with labeled parts and directional arrows, likely illustrating a tool or process.

Fig. 3

graph TD
    A["Device"] --> B{Symbol}
    B --> C["Circle Symbol"]
    C --> D["Device"]
    D --> E["Device"]
    E --> F["Device"]
    F --> G["Device"]
    G --> H["Device"]
    H --> I["Device"]
    I --> J["Device"]
    J --> K["Device"]
    K --> L["Device"]
    L --> M["Device"]
    M --> N["Device"]
    N --> O["Device"]
    O --> P["Device"]
    P --> Q["Device"]
    Q --> R["Device"]
    R --> S["Device"]
    S --> T["Device"]
    T --> U["Device"]
    U --> V["Device"]
    V --> W["Device"]
    W --> X["Device"]
    X --> Y["Device"]
    Y --> Z["Device"]

Fig. 4

2.3 BORNAGE

graph TD
    CALDAIA[" CALDAIA "] --> M1[" M "]
    CALDAIA --> M2[" M "]
    CALDAIA --> M3[" M "]
    CALDAIA --> M4[" M "]
    CALDAIA --> M5[" M "]
    CALDAIA --> M6[" M "]
    CALDAIA --> M7[" M "]
    CALDAIA --> M8[" M "]
    CALDAIA --> M9[" M "]
    CALDAIA --> M10[" M "]
    CALDAIA --> M11[" M "]
    CALDAIA --> M12[" M "]
    CALDAIA --> M13[" M "]
    CALDAIA --> M14[" M "]
    CALDAIA --> M15[" M "]
    CALDAIA --> M16[" M "]
    CALDAIA --> M17[" M "]
    CALDAIA --> M18[" M "]
    CALDAIA --> M19[" M "]
    CALDAIA --> M20[" M "]
    CALDAIA --> M21[" M "]
    CALDAIA --> M22[" M "]
    CALDAIA --> M23[" M "]
    CALDAIA --> M24[" M "]
    CALDAIA --> M25[" M "]
    CALDAIA --> M26[" M "]
    CALDAIA --> M27[" M "]
    CALDAIA --> M28[" M "]
    CALDAIA --> M29[" M "]
    CALDAIA --> M30[" M "]
    CALDAIA --> M31[" M "]
    CALDAIA --> M32[" M "]
    CALDAIA --> M33[" M "]
    CALDAIA --> M34[" M "]
    CALDAIA --> M35[" M "]
    CALDAIA --> M36[" M "]
    CALDAIA --> M37[" M "]
    CALDAIA --> M38[" M "]
    CALDAIA --> M39[" M "]
    CALDAIA --> M40[" M "]
    CALDAIA --> M41[" M "]
    CALDAIA --> M42[" M "]
    CALDAIA --> M43[" M "]
    CALDAIA --> M44[" M "]
    CALDAIA --> M45[" M "]
    CALDAIA --> M46[" M "]
    CALDAIA --> M47[" M "]
    CALDAIA --> M48[" M "]
    CALDAIA --> M49[" M "]
    CALDAIA --> M50[" M "]
    CALDAIA --> M51[" M "]
    CALDAIA --> M52[" M "]
    CALDAIA --> M53[" M "]
    CALDAIA --> M54[" M "]
    CALDAIA --> M55[" M "]
    CALDAIA --> M56[" M "]
    CALDAIA --> M57[" M "]
    CALDAIA --> M58[" M "]
    CALDAIA --> M59[" M "]
    CALDAIA --> M60[" M "]
    CALDAIA --> M61[" M "]
    CALDAIA --> M62[" M "]
    CALDAIA --> M63[" M "]
    CALDAIA --> M64[" M "]
    CALDAIA --> M65[" M "]
    CALDAIA --> M66[" M "]
    CALDAIA --> M67[" M "]
    CALDAIA --> M68[" M "]
    CALDAIA --> M69[" M "]
    CALDAIA --> M70[" M "]
    CALDAIA --> 72a/139a
    CALDAIA --> 72b/139b

Fig. 14

c. Temps post-circulation

c. Temps post-circulation

c. Temps post-circulation

c. Temps post-circulation

c. Temps post-circulation

Technical diagram showing a mechanical assembly with labeled parts and directional arrows, likely illustrating a tool or process.

fig. 3

graph TD
    A["Device"] --> B{Symbol}
    B --> C["Circle"]
    C --> D["Switch"]
    style C stroke:#000,stroke-width:2px
    style D stroke:#000,stroke-width:2px

fi g. 4

graph TD
    CALDAIA[" CALDAIA "] --> M[" M "]
    CALDAIA --> 315a[" 315a "]
    CALDAIA --> 317a[" 317a "]
    CALDAIA --> 319a[" 319a "]
    CALDAIA --> 318a[" 318a "]
    CALDAIA --> coil[" Coil "]
    coil --> a[" a "]
    coil --> b[" b "]
    a --> 72a/139a[" 72a/139a "]
    b --> 72b/139b[" 72b/139b "]

fig. 16

5.2.1 Termostato on/off

5.18.1 Termostato on/off

5.20.1 Termostato on/off

5.22.1 Termostato on/off

5.24.1 Termostato on/off

5.26.1 Termostato on/off

6.1.1 Termostato on/off

Bomba de zona

6.2.1 Termostato on/off

6.18.1 Termostato on/off

6.20.1 Termostato on/off

6.22.1 Termostato on/off

6.24.1 Termostato on/off

6.26.1 Termostato on/off

Technical diagram showing a mechanical assembly with labeled parts and directional arrows, likely illustrating a cutting or folding process.

Abb. 3

graph TD
    A["Input"] --> B["Processing Node"]
    B --> C["Output"]
    style B fill:#f9f,stroke:#333
    style C fill:#ccf,stroke:#333

Abb. 4

graph TD
    CALDAIA[" CALDAIA "] --> M1[" M "]
    CALDAIA --> M2[" M "]
    CALDAIA --> M3[" M "]
    CALDAIA --> M4[" M "]
    CALDAIA --> M5[" M "]
    CALDAIA --> M6[" M "]
    CALDAIA --> M7[" M "]
    CALDAIA --> M8[" M "]
    CALDAIA --> M9[" M "]
    CALDAIA --> M10[" M "]
    CALDAIA --> M11[" M "]
    CALDAIA --> M12[" M "]
    CALDAIA --> M13[" M "]
    CALDAIA --> M14[" M "]
    CALDAIA --> M15[" M "]
    CALDAIA --> M16[" M "]
    CALDAIA --> M17[" M "]
    CALDAIA --> M18[" M "]
    CALDAIA --> M19[" M "]
    CALDAIA --> M20[" M "]
    CALDAIA --> M21[" M "]
    CALDAIA --> M22[" M "]
    CALDAIA --> M23[" M "]
    CALDAIA --> M24[" M "]
    CALDAIA --> M25[" M "]
    CALDAIA --> M26[" M "]
    CALDAIA --> M27[" M "]
    CALDAIA --> M28[" M "]
    CALDAIA --> M29[" M "]
    CALDAIA --> M30[" M "]
    CALDAIA --> M31[" M "]
    CALDAIA --> M32[" M "]
    CALDAIA --> M33[" M "]
    CALDAIA --> M34[" M "]
    CALDAIA --> M35[" M "]
    CALDAIA --> M36[" M "]
    CALDAIA --> M37[" M "]
    CALDAIA --> M38[" M "]
    CALDAIA --> M39[" M "]
    CALDAIA --> M40[" M "]
    CALDAIA --> M41[" M "]
    CALDAIA --> M42[" M "]
    CALDAIA --> M43[" M "]
    CALDAIA --> M44[" M "]
    CALDAIA --> M45[" M "]
    CALDAIA --> M46[" M "]
    CALDAIA --> M47[" M "]
    CALDAIA --> M48[" M "]
    CALDAIA --> M49[" M "]
    CALDAIA --> M50[" M "]
    CALDAIA --> M51[" M "]
    CALDAIA --> M52[" M "]
    CALDAIA --> M53[" M "]
    CALDAIA --> M54[" M "]
    CALDAIA --> M55[" M "]
    CALDAIA --> M56[" M "]
    CALDAIA --> M57[" M "]
    CALDAIA --> M58[" M "]
    CALDAIA --> M59[" M "]
    CALDAIA --> M60[" M "]
    CALDAIA --> M61[" M "]
    CALDAIA --> M62[" M "]
    CALDAIA --> M63[" M "]
    CALDAIA --> M64[" M "]
    CALDAIA --> M65[" M "]
    CALDAIA --> M66[" M "]
    CALDAIA --> M67[" M "]
    CALDAIA --> M68[" M "]
    CALDAIA --> M69[" M "]
    CALDAIA --> M70[" M "]
    CALDAIA --> 72a/139a
    CALDAIA --> 72b/139b

Abb. 14

5.20.1 Thermostat on/off

5.26.1 Thermostat on/off

6.20.1 Thermostat on/off

6.22.1 Thermostat on/off

OFFSET = 40