FZ4 - Uncategorized FERROLI - Free user manual and instructions

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USER MANUAL FZ4 FERROLI

5.20.1 Termostato on/off

5.26.1 Termostato on/off

6.18.1 Termostato on/off

6.20.1 Termostato on/off

6.22.1 Termostato on/off

6.26.1 Termostato on/off

EXTERNAL VIEW AND BOX DIMENSIONS

3 - button 7 Fuse “FH02” board FZ4

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 confi gurable and are as follows:

One Direct zone with Sliding Temp.

Two Direct zones with Sliding Temp.

Three Direct zones with Sliding Temp.

One Mixed zone with Sliding Temp.

Two Mixed zones with Sliding Temp.

One Mixed zone + One Direct zone with Sliding Temp.

One Mixed zone + Two Direct zones with Sliding Temp.

Two Mixed zones + One Direct zone with Sliding Temp.

One Direct zone + One hot water tank with Sliding Temp.

Two Direct zones + One hot water tank with Sliding Temp.

Three Direct zones + One hot water tank with Sliding Temp.

One Mixed zone + One hot water tank with Sliding Temp.

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.CONTROLLO ZONE FZ4B

Bag for screws Max. room humidity 90% at 40°C

Cable clamp Installation:

Phillips self-tapping screw 3.5x19 UNI6954 Wall 2 x 2 Plugs D.5x25 Power supply range: 2 x 2 Flathead screw 4x30 230Vac +10% -15%, 50Hz

Instruction manualFZ4B Total current absorbed:

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 fi elds 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.

Before installation, remove the front part of the box, prising with a screwdriver at point 1 (fi g.3); then lift the front part of the box as indicated in point 2 (fi g.3): fi g. 3 Fix the back of the zone control (fi g.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. fi g. 4CONTROLLO ZONE FZ4B

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 (fi g.5). fi g. 5 For the low voltage connections (terminals: 17-33) use cables of section 2.5mm2 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 4.0mm2 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 con- nection 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, fi rst of all it is necessary to select one of these 3:

1 - Communicating: Generator equipped with Opentherm protocol

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3T4 BLR 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)

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR 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

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR 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 sensorCONTROLLO ZONE FZ4B

72a/139a fi g. 6 Electrical connections After installation, carry out the necessary electrical connections as shown in the wiring diagram. Then confi gure the controller as described in the specifi c 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 72a/139a318a 318a 72a/139a 138 318a 139a 72a

Necessary wiring 139a 1st zone (direct) Remote Timer Control - - - - Optional wiring 318a 1st zone (direct) circulating pump To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0CONTROLLO ZONE FZ4B

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3T4 BLR fi g. 9 Key 72a 1st zone (direct) room thermostat 318a 1st zone (direct) circulating pump a 1st zone (direct) 72b 2nd zone (direct) room thermostat 318b 2nd zone (direct) circulating pump b 2nd zone (direct) 138 External probe

Necessary wiring 139a 1st zone (direct) Remote Timer Control - - - - Optional wiring 139b 2nd zone (direct) Remote Timer Control To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0CONTROLLO ZONE FZ4B

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR fi g. 11 Key 72a 1st zone (direct) room thermostat 318a 1st zone (direct) circulating pump a 1st zone (direct) 72b 2nd zone (direct) room thermostat 318b 2nd zone (direct) circulating pump b 2nd zone (direct) 72c 3rd zone (direct) room thermostat 318c 3rd zone (direct) circulating pump c 3rd zone (direct) 138 External probe

Necessary wiring 139a 1st zone (direct) Remote Timer Control - - - - Optional wiring 139b 2nd zone (direct) Remote Timer Control 139c 3rd zone (direct) Remote Timer Control To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0CONTROLLO ZONE FZ4B

cod. FZ4B - 06/2011 (Rev. 00)

One mixed zone Schematic diagram Use 3-wire mixing valves:

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

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3T4 BLR fi g. 13 Key 72a 1st zone (mixed) room thermostat 317a 1st zone (mixed) safety thermostat a 1st zone (mixed) 138 External probe 318a 1st zone (mixed) circulating pump 139a 1st zone (mixed) Remote Timer Control 319a 1st zone (mixed) delivery sensor

Necessary wiring 315a 1st zone (mixed) mixing valve - - - - Optional wiring

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0CONTROLLO ZONE FZ4B

cod. FZ4B - 06/2011 (Rev. 00)

Two mixed zones Schematic diagram Use 3-wire mixing valves:

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

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR 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

315b 2nd zone (mixed) mixing valve

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 confi guration 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 013018X0CONTROLLO ZONE FZ4B

cod. FZ4B - 06/2011 (Rev. 00)

One mixed zone and one direct zone Schematic diagram Use 3-wire mixing valves:

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

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3T4 BLR 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

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)

One mixed zone and two direct zones Schematic diagram Use 3-wire mixing valves:

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

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3T4 BLR 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

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)

Two mixed zones and tone direct zone Schematic diagram Use 3-wire mixing valves:

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

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3 T4 BLR 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

315b 2nd zone (mixed) mixing valve

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 fi g. 21 In case of Stand Alone 2 confi guration 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 013018X0CONTROLLO ZONE FZ4B

fi g. 22 Electrical connections After installation, carry out the necessary electrical connections as shown in the wiring diagram. Then confi gure the controller as described in the specifi c 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 318a

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)CONTROLLO ZONE FZ4B

cod. FZ4B - 06/2011 (Rev. 00)

One direct zone and one hot water tank circuit Schematic diagram CALDAIA 318a

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3T4 BLR fi g. 25 Key 72a 1st zone (direct) room thermostat a 1st zone (direct) 138 External probe b Hot water tank circuit 139a 1st zone (direct) Remote Timer Control

Necessary wiring 318a 1st zone (direct) circulating pump - - - - Optional wiring 318b Hot water tank circulating pump 155 Hot water tank probe 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)CONTROLLO ZONE FZ4B

cod. FZ4B - 06/2011 (Rev. 00)

Two direct zones and one hot water tank circuit Schematic diagram CALDAIA 318a

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3T4 BLR fi g. 27 Key 72a 1st zone (direct) room thermostat 318a 1st zone (direct) circulating pump a 1st zone (direct) 72b 2nd zone (direct) room thermostat 318b 2nd zone (direct) circulating pump b 2nd zone (direct) 138 External probe 318c Hot water tank circulating pump c Hot water tank circuit 139a 1st zone (direct) Remote Timer Control

Necessary wiring 139b 2nd zone (direct) Remote Timer Control - - - - Optional wiring 155 Hot water tank probe 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)CONTROLLO ZONE FZ4B

cod. FZ4B - 06/2011 (Rev. 00)

Three direct zones and one hot water tank circuit Schematic diagram CALDAIA 318a

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3T4 BLR fi g. 29 Key 72a 1st zone (direct) room thermostat 155 Hot water tank probe a 1st zone (direct) 72b 2nd zone (direct) room thermostat 318a 1st zone (direct) circulating pump b 2nd zone (direct) 72c 3rd zone (direct) room thermostat 318b 2nd zone (direct) circulating pump c 3rd zone (direct) 138 External probe 318c 3rd zone (direct) circulating pump d Hot water tank circuit 139a 1st zone (direct) Remote Timer Control 318d Hot water tank circulating pump

Necessary wiring 139b 2nd zone (direct) Remote Timer Control - - - - Optional wiring 139c 3rd zone (direct) Remote Timer Control 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)CONTROLLO ZONE FZ4B

cod. FZ4B - 06/2011 (Rev. 00)

One mixed zone and one hot water tank circuit Schematic diagram Use 3-wire mixing valves:

- 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 CALDAIA

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3T4 BLR fi g. 31 Key 72a 1st zone (mixed) room thermostat 155 Hot water tank probe a 1st zone (mixed) 138 External probe 317a 1st zone (mixed) safety thermostat b Hot water tank circuit 139a 1st zone (mixed) Remote Timer Control 318a 1st zone (mixed) circulating pump

Necessary wiring 315a 1st zone (mixed) mixing valve 318b Hot water tank circulating pump - - - - Optional wiring A = OPENING PHASE 319a 1st zone (mixed) delivery sensor B = NEUTRAL

In case of Stand Alone 2 confi guration 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)CONTROLLO ZONE FZ4B

cod. FZ4B - 06/2011 (Rev. 00)

One mixed zone, one direct zone and one hot water tank circuit Schematic diagram Use 3-wire mixing valves:

- 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 CALDAIA

NLLL X01 X02 X03 X09 X10 X11 X12 X13 X14 BUS RT1 RT2 RT3 T1 T2 T3T4 BLR 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

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 confi guration 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)CONTROLLO ZONE FZ4B

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 Autoconfi guration (detail 5 - Fig. 34) on the controller and keep it pressed until all the bottom LEDs blink as follows: DISP1 D17

fi g. 35 - Saving of system confi guration When all the bottom LEDs and the STATUS LED blink, release the AUTOCONFIG button or Autoconfi guration (detail 5 - Fig. 34). When the Status LED stops blinking, make sure the bottoms LEDs that are on fi xed match the required system confi guration table (fi g. 35). If this does not occur, check the wiring again and repeat the system AutoConfi guration procedure. If one or more Remote Timer Controls are used, at the end of the Autoconfi guration procedure the Heating and DHW setpoints must be set (see the relevant documentation).CONTROLLO ZONE FZ4B

The board FZ4B is a zone controller that can be confi gured in several ways. There are six main confi gurations:

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" confi gurations 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.CONTROLLO ZONE FZ4B

Autoconfi guration Connection Description

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 defi ned 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

NTC sensor (T4) External probe X15 Card SK connected

5.2.1 On/Off Thermostat

The algorithm remains the same as the confi guration: 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).CONTROLLO ZONE FZ4B

The algorithm remains the same as the confi guration: 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 cal- culated from Remote Control.

5.3 “TWO DIRECT ZONES – NO EXTERNAL SENSOR”

Autoconfi guration: Connection Description

On/Off Thermostat or Remote Control (RT2) Direct zone 2 X15 Card SK connected The algorithm remains the same as the confi guration: 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

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

On/Off Thermostat or Remote Control (RT3) Direct zone 3 X15 Card SK connected The algorithm remains the same as the confi guration: 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

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

NTC sensor (T1) Mixed zone 1 delivery

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 micro- processor 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 poweredCONTROLLO ZONE FZ4B

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 defi ned 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T4) External probe X15 Card SK connected

5.8.1 On/Off Thermostat

The algorithm remains the same as the confi guration: 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).CONTROLLO ZONE FZ4B

The algorithm remains the same as the confi guration: 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 cal- culated from Remote Control.

5.9 “TWO MIXED ZONES – NO EXTERNAL SENSOR”

Autoconfi guration: Connection Description

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Mixing Valve Opening phase (RY5) Mixed zone 2

Mixing Valve neutral (RY5) Mixed zone 2

Mixing Valve Closing phase (RY6) Mixed zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T2) Mixed zone 2 delivery X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Mixing Valve Opening phase (RY5) Mixed zone 2

Mixing Valve neutral (RY5) Mixed zone 2

Mixing Valve Closing phase (RY6) Mixed zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump neutral (RY5) Direct zone 1

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery X15 Card SK connected The algorithm remains the same as the confi guration: 5.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Mixed Zone remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump neutral (RY5) Direct zone 1

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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.

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump phase (RY5) Direct zone 2

Pump neutral (RY5) Direct zone 1

Pump neutral (RY5) Direct zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery X15 Card SK connected The algorithm of Direct Zone1 remains the same as the confi guration: 5.1 “ONE Direct Zone – No External Sensor”. The algorithm of Direct Zone2 remains the same as the confi guration: 5.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Mixed Zone remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump phase (RY5) Direct zone 2

Pump neutral (RY5) Direct zone 1

Pump neutral (RY5) Direct zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Mixing Valve Opening phase (RY5) Mixed zone 2

Mixing Valve neutral (RY5) Mixed zone 2

Mixing Valve Closing phase (RY6) Mixed zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T2) Mixed zone 2 delivery X15 Card SK connected The algorithm of Direct Zone1 remains the same as the confi guration: 5.1 “ONE Direct Zone – No External Sensor”. The algorithm of Mixed Zone1 remains the same as the confi guration: 5.7 “ONE Mixed Zone – No External Sensor”. The algorithm of Mixed Zone2 remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Mixing Valve Opening phase (RY5) Mixed zone 2

Mixing Valve neutral (RY5) Mixed zone 2

Mixing Valve Closing phase (RY6) Mixed zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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.CONTROLLO ZONE FZ4B

5.17 “ONE HOT WATER TANK”

Autoconfi guration: Connection Description

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

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 confi guration: 5.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 confi guration: 5.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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.CONTROLLO ZONE FZ4B

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 fi xed ranges. Modifi cation 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 modifi ed 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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

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 confi guration: 5.3 “TWO Direct Zones – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 timeCONTROLLO ZONE FZ4B

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 confi guration: 5.3 “TWO Direct Zones – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 fi xed ranges. Modifi cation 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 modifi ed 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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

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 confi guration: 5.6 “THREE Direct Zones – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 confi guration: 5.6 “THREE Direct Zones – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 fi xed ranges. Modifi cation 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 modifi ed 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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Hot water tank probe

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 confi guration: 5.7 “ONE Mixed Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 confi guration: 5.7 “ONE Mixed Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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.CONTROLLO ZONE FZ4B

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 fi xed ranges. Modifi cation 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 modifi ed 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump neutral (RY5) Direct zone 1

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe X15 Card SK connectedCONTROLLO ZONE FZ4B

The algorithm of the Mixed Zone remains the same as the confi guration: 5.7 “ONE Mixed Zone – No External Sensor”. The algorithm remains the same as the confi guration: 5.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 confi guration: 5.7 “ONE Mixed Zone – No External Sensor”. The algorithm remains the same as the confi guration: 5.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 fi xed ranges. Modifi cation 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 modifi ed 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump neutral (RY5) Direct zone 1

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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.

Autoconfi guration: Connection Description

NTC sensor (T3) Heating delivery

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 defi ned 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.CONTROLLO ZONE FZ4B

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

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected

6.2.1 On/Off Thermostat

The algorithm remains the same as the confi guration: 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 confi guration: 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 cal- culated from Remote Control.

6.3 “TWO DIRECT ZONES – NO EXTERNAL SENSOR”

Autoconfi guration: Connection Description

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery X15 Card SK connected The algorithm remains the same as the confi guration: 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.CONTROLLO ZONE FZ4B

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

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery X15 Card SK connected The algorithm remains the same as the confi guration: 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

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T3) Heating delivery

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 micro- processor 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 defi ned 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.CONTROLLO ZONE FZ4B

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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected

6.8.1 On/Off Thermostat

The algorithm remains the same as the confi guration: 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 confi guration: 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-CONTROLLO ZONE FZ4B

culated from Remote Control.

6.9 “TWO MIXED ZONES – NO EXTERNAL SENSOR”

Autoconfi guration: Connection Description

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Mixing Valve Opening phase (RY5) Mixed zone 2

Mixing Valve neutral (RY5) Mixed zone 2

Mixing Valve Closing phase (RY6) Mixed zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Mixing Valve Opening phase (RY5) Mixed zone 2

Mixing Valve neutral (RY5) Mixed zone 2

Mixing Valve Closing phase (RY6) Mixed zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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.CONTROLLO ZONE FZ4B

Autoconfi guration: Connection Description

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump neutral (RY5) Direct Zone 1

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery X15 Card SK connected The algorithm remains the same as the confi guration: 6.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Mixed Zone remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump neutral (RY5) Direct zone 1

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump neutral (RY5) Direct zone 1

Pump neutral (RY5) Direct zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery X15 Card SK connected The algorithm of Direct Zone1 remains the same as the confi guration: 6.1 “ONE Direct Zone – No External Sensor”. The algorithm of Direct Zone2 remains the same as the confi guration: 6.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Mixed Zone remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump phase (RY5) Direct zone 2

Pump neutral (RY5) Direct zone 1

Pump neutral (RY5) Direct zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Opening phase (RY5) Mixed zone 2

Mixing Valve neutral (RY5) Mixed zone 2

Mixing Valve Closing phase (RY6) Mixed zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery X15 Card SK connected The algorithm of Direct Zone1 remains the same as the confi guration: 6.1 “ONE Direct Zone – No External Sensor”. The algorithm of Mixed Zone1 remains the same as the confi guration: 6.7 “ONE Mixed Zone – No External Sensor”. The algorithm of Mixed Zone2 remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Mixing Valve Opening phase (RY5) Mixed zone 2

Mixing Valve neutral (RY5) Mixed zone 2

Mixing Valve Closing phase (RY6) Mixed zone 2

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T2) Mixed zone 2 delivery

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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 orCONTROLLO ZONE FZ4B

6.17 “ONE HOT WATER TANK”

Autoconfi guration: Connection Description

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

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 confi guration: 6.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 confi guration: 6.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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.CONTROLLO ZONE FZ4B

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 fi xed ranges. Modifi cation 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 modifi ed 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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

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 confi guration: 6.3 “TWO Direct Zones – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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) mustCONTROLLO ZONE FZ4B

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 confi guration: 6.3 “TWO Direct Zones – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 fi xed ranges. Modifi cation 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 modifi ed 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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 6.20 “TWO Direct Zones and ONE Hot water tank – No External Sensor”.CONTROLLO ZONE FZ4B

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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

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 confi guration: 6.6 “THREE Direct Zones – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 confi guration: 6.6 “THREE Direct Zones – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 setpointCONTROLLO ZONE FZ4B

The range for management of ID56 of the Remote Controls (DHW temperature adjustment button) is between 10°C and 65°C: zone card fi xed ranges. Modifi cation 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 modifi ed 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

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

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 confi guration: 6.7 “ONE Mixed Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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.CONTROLLO ZONE FZ4B

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 confi guration: 6.7 “ONE Mixed Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 fi xed ranges. Modifi cation 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 modifi ed 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 6.24 “ONE Mixed Zone and ONE hot water tank – No External Sensor”.CONTROLLO ZONE FZ4B

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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump neutral (RY5) Direct zone 1

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

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 confi guration: 6.7 “ONE Mixed Zone – No External Sensor”. The algorithm remains the same as the confi guration: 6.1 “ONE direct Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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 confi guration: 6.7 “ONE Mixed Zone – No External Sensor”. The algorithm remains the same as the confi guration: 6.1 “ONE Direct Zone – No External Sensor”. The algorithm of the Hot water tank remains the same as the confi guration: 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.CONTROLLO ZONE FZ4B

cod. FZ4B - 06/2011 (Rev. 00)

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 fi xed ranges. Modifi cation 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 modifi ed 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

Mixing Valve Opening phase (RY2) Mixed zone 1

Mixing Valve neutral (RY2) Mixed zone 1

Mixing Valve Closing phase (RY3) Mixed zone 1

Pump phase (RY4) Direct zone 1

Pump neutral (RY5) Direct zone 1

Pump neutral (RY7) Hot water tank

Pump phase (RY7) Hot water tank

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T1) Mixed zone 1 delivery

NTC sensor (T2) Hot water tank probe

NTC sensor (T2) Hot water tank probe

NTC sensor (T3) Heating delivery

NTC sensor (T3) Heating delivery

NTC sensor (T4) External probe X15 Card SK connected The algorithm remains the same as the confi guration: 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 confi gurations and their algorithms remain the same as the “Stand Alone 1” confi gurations; 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 defi ned Zone card Heating Setpoint, which in “Stand Alone 1” confi gurations 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.CONTROLLO ZONE FZ4B

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 fl ash) 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.

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.CONTROLLO ZONE FZ4B

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 confi rm 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" confi gurations) 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.

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 suffi cient voltage (Range 195– 253 Vac), check the fuse FH02 (see fi g. 2). 10 ADDITIONAL FUNCTIONS

The FH mode is automatically activated the fi rst time the card is powered or after doing the Autoconfi guration 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 Autoconfi guration) 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 fi rst 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 Autoconfi guration, the zone controller is confi gured 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 Autoconfi guration, the zone controller is confi gured 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 Autoconfi guration, the zone controller is confi gured in “Stand Alone 1 or 2” mode. Set to 0 in case of “Stand Alone 1" confi - gurations. Set to 1 in case of “Stand Alone 2" confi gurations. 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 Autoconfi guration, the zone controller is confi gured 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 Autoconfi guration, the zone controller is confi gured 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 Autoconfi guration, the zone controller is confi gured 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 FZ4BCONTROLLO ZONE FZ4B

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 () -10 54932 -5 42080

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 modifi ed 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 modifi ed 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.

OFFSET = 20 OFFSET = 40 In case of external probe fault (error F73), the system will work with the set heating setpoint.CONTROLLO ZONE FZ4B

5.20.1 Termostato on/off

5.26.1 Termostato on/off

6.18.1 Termostato on/off

6.20.1 Termostato on/off

6.22.1 Termostato on/off

6.26.1 Termostato on/off