Theta+ - Thermostat FERROLI - Free user manual and instructions

Type	Heating control unit (standard unit, boiler control panel, room control unit)
Power Supply	230 V~, 50 Hz, 6/-10%
Number of Heating Circuits	Up to 2 mixed circuits + 1 direct circuit
Data Bus	Bi-directional, shielded cable, max 100 m, addressable (10, 20, 30, 40, 50)
Sensor Types	Outdoor (AF 200), immersion (KVT 20), flow (VF 202/204), flue gas/solar (PT1000)
Operating Temperature Range (sensors)	-20 °C to 250 °C (depending on sensor)
User Interface	Rotary knob and buttons; LCD display with segments
Mounting	Standard unit: flush into boiler panel; Room unit: wall-mounted (1.2-1.5 m height)
Protection Class	IP? (not specified, assume IP20 for indoor use)
Safety Features	Safety temperature limiter (STL), alarm messages, frost protection
DHW Functions	Domestic hot water charging pump, legionella protection, circulation pump control
Solar Integration	Solar panel pump, buffer tank, energy balance calculation
Cascade Control	Up to 5 control units (addresses 10-50), sequential or parallel operation
Alarm Log	Stores up to 20 alarm messages with date and time
Language Selection	Multiple languages (DE, GB, FR, IT, NL, ES, PT, HU, CZ, PL, RO, RU, TR, S, N, BG)
Maximum Cable Length (sensors)	100 m for low voltage cables (0.5 mm²)
Maximum Cable Length (data bus)	100 m, shielded J-Y(St)Y 1x2x0.6 mm²
Variable Inputs/Outputs	3 variable inputs, 2 variable outputs (programmable)
Standards Compliance	EMC-conform installation, VDE 0100, EN 60555-2
Accessories	Wall socket MS-K, outdoor sensor AF, immersion sensor KVT, flow sensor VF

Frequently Asked Questions - Theta+ FERROLI

What is the Ferroli Theta+ used for?

The Ferroli Theta+ is a heating control system for managing multiple heating circuits, domestic hot water, solar systems, and cascade boilers. It includes standard units, boiler control panels, and room units.

How do I set the data bus address on a remote unit?

After first start-up, the remote unit shows a segment character. Select language, then the device identification and bus address appear. Use the rotary knob to adjust the address (e.g., 11 for direct circuit of basic unit) and confirm by pressing.

What should I do if the control unit shows a sensor error (e.g., code 10-0)?

Code 10-0 indicates an outdoor sensor break. Check the sensor connection and cable. Refer to the alarm table: 10-0 = outdoor sensor break, 10-1 = short circuit. Replace the sensor if needed.

How can I activate the automatic sensor recognition (Auto-Set)?

Auto-Set is activated in the SYSTEM level, parameter 14. Set it to ON. Manual activation: during switch-on, keep the rotary knob pressed during segment test.

What is the maximum cable length for sensor and data bus cables?

For low voltage sensors (0.5 mm²) and data bus (J-Y(St)Y 1x2x0.6 mm²), the maximum length is 100 meters. Longer distances increase interference risk.

How do I perform a relay test?

Enter the RELAY TEST level via the rotary knob. Select each component (e.g., heat generator, pumps, mixer actuators) and toggle them ON/OFF to verify operation. Press the knob to cycle.

Can I connect more than one control unit?

Yes, up to 5 control units can be cascaded with addresses 10, 20, 30, 40, 50. The main unit (address 10) controls the burner; others are add-on units for extra heating circuits.

What does the frost protection symbol (ice crystal) mean?

The ice crystal symbol indicates that frost protection is active. The system will prevent freezing by maintaining a minimum temperature (default 3 °C, adjustable in SYSTEM parameter 05).

How do I reset the operating hours counter?

Go to the HEAT GENERATOR level, parameter 37 for operating hours counter. Set to RESET and confirm with the rotary knob. Stages can be reset individually (RESET ST-1 or ST-2).

What are the recommended installation distances to avoid EMC interference?

Keep mains voltage cables (230 V) at least 2 cm from sensor/data bus cables. Maintain 40 cm distance from equipment like motors, relays, microwaves, and television sets. Crossings are allowed.

USER MANUAL Theta+ FERROLI

For the heating specialist Operating and installation instructions

Standard unit
Remote unit RS
Boiler control panel

Contents

General safety instructions .... 3

Safety measures for EMC - conform installation....3

Standard unit....5

Mounting 5

Electrical installation 5

Terminal assignment 6

Boiler control panel....7

Mounting 7

Electrical installation 7

Terminal assignment 8

Wall socket MS-K 9

Electrical installation....9

Terminal assignment 10

Room control unit RS 11

Mounting location....11

Mounting 11

Terminal assignment 12

Electrical connections (control unit)....12

Data bus addressing....12

Equipment....14

Outdoor sensor AF (OT)....14

Immersion sensor KVT 14

Flow sensor VF 15

Resistance values of the sensor elements versus temperature.... 16

Starting up the control unit....17

Code-Input 17

Automatic SET-Function 18

Alarm messages....20

Heating system information 21

Level synoptic 25

Synoptic of the specialist parameters and control options 28

General safety instructions

All electrical connections and safety measures have to be carried out by a specialist according to the valid norms and VDE-guidelines as well as the local instructions.

The electrical connection must be fix (see instructions by VDE 0100).

The electrical connection has to be done according to the wiring diagram of the respective boiler control panel.

Important!

Deenergize the boiler before opening. Unprofessional plugging attempts under voltage may damage the control or cause dangerous electrical shocks.

Safety measures for EMC - conform installation

1. Cables with mains voltage must be generally installed separately from sensor and data bus cables. In this case a minimum distance of 2 cm must be observed. Crossing of lines is permitted.

Fig. 1: Minimum distance for cable installations

1. Controls with own mains connection require a separate installation of mains and sensor or data bus cable. When using cable ducts such with internal separators are recommended.

2. Installing control or remote units close to other components with electro magnetic emission such as solid state relays, motors, transformers, dimmers, micro wave ovens, TV-sets, loud-speakers, computers, radio telephones etc. a minimum distance of 40 cm must be observed.

Fig. 2: Minimum distance to other electric supply

1. Between remote units and standard unit a minimum distance of 40 cm has to be observed. Several standard units may be installed side by side.

2. The mains connection of the heating plant (standard unit or boiler control panel) must be carried out as an independent electric circuit. It is not permitted to install fluorescent tubes or other machines that could produce interferences to the same electrical circuit.

Fig. 3: Leading of electrical cables in the boiler room

1. All data bus cables must be carried out in shielded version.

Recommended cable: J-Y(St)Y 1 x 2 x 0,6 mm ^2

1. The shielding of the cable has to be connected with earth potential, i.e. boiler covering, connecting terminals for earth potential etc. Multiple grounding is not permitted (humming loop).

Fig. 4: Single grounding of shielding

In stellate data bus networks shall be no double grounding. The grounding must be made unilaterally in the star-point.

Fig. 5: Grounding in star shaped networks

1. The outside sensor may not be installed close to transmitter- or receiver-equipment (on garage walls close to receivers for radio-controlled garage door openers, ham operator antennas, radio controlled alert systems or close to big radio transmission plants).

Cable dimensions and maximum cable length

For all 230V\~ cables such as power supply, burner, pumps, actuators: 1.5 mm ^4 Maximum cable length:

Unlimited cable length within house installation

For all low voltage cables such as sensors, extern selectors, bus and analogue in- and outputs, heat requiring by means of extern contact, modem connection cables, etc.: 0.5 mm ^2

Maximum cable length: 100 m Longer distances are possible but increase the risk of interferences.

Data bus connections: 0.6 ~mm^2

Recommended cable:

J-Y(St)Y 1 x 2 x 0.6 mm²

Maximum cable length: 100 m

Longer distances are possible but increase the risk of interferences.

Standard unit

Mounting

All standard units are designed exclusively as units for incorporation and will be installed from the front side into the boiler panel after finishing the electrical wiring.

The instrument is fastened by a quarter turn clockwise of the quick clamping devices at the left and right side of the front panel (1).

Removal is done in opposite direction.

Electrical installation

The electrical installation to the control equipment is done at the back side of the instrument via the four enclosed connecting terminals X1, X2, X3 and X4 corresponding to the identification on the coloured-marked connection pads.

All blue marked connecting terminals (X1) work with safety low voltage and must not get into contact with the mains voltage. At non-observance the instrument will definitely be destroyed and any warranty gets lost.

Red marked connecting terminals (X2...X4) principally may work with mains voltage according to the current operation conditions.

For further information see documentation of the boiler manufacturer.

Electrical connection see next page.

Note:

Cables with mains voltage must be installed separate from low voltage cables (data bus, sensors etc.). It is strictly prohibited to use one cable for both voltages. Sensor cables and data bus cables may not be installed together with mains voltage cables supplying electrical appliance which are not suppressed according to EN 60555-2.

Terminal assignment

230 V\~ Connections

1 – Floating exit for heat generator, output (stage 1)
2 - Floating exit for heat generator, input (stage 1)
3 – Pump for direct heating circuit
4 – not connected, used for coding
5 – Domestic hot water charging pump
6 - L 1 / 230 V\~
7 - Mixing valve 1 OPEN
8 - Mixing valve 1 CLOSED
9 – Pump for mixed heating circuit 1
10 – Variable output 1
11 – Variable output 2
12-L 1/230 V\~
13 - Mixing valve 2 OPEN
14 - Mixing valve 2 CLOSED
15 – Pump for mixed heating circuit 2
16 -
17 - Floating exit for heat generator, output (stage 2)
18 - Floating exit for heat generator, input (stage 2)
19 – Operat. hours counter burner - (stage 2)
20 – Operat. hours counter burner - (stage 1)
21 - N / 230 V\~ 22 - L 1 / 230 V\~} mains

Sensor and data bus connections

23 – Ground for data bus and sensors
24 – Data bus signal A
25 – Data bus signal B
26 – Outdoor sensor
27 - Sensor heat generator/boiler
28 – Domestic hot water sensor
29 - Flow sensor for mixed heating circuit 1
30 - Variable input 1
31 - Variable input 2
32 – Variable input 3
33 - Flow sensor for mixed heating circuit 2
34 – Solar panel flow sensor ^1)
35 – Solar tank sensor
36 - Pulse input
37 - Heat generator-data bus A
38 - Heat generator-data bus A

Mounting into boilers

See technical documentation of boiler manufacturer.

Wall mounting

See technical documentation »wall mounting set THETA WG«

1) Solar application only

Boiler control panel

Mounting

The boiler control panel is completely prewired and will be mounted from the front side into the panel cut-out of the boiler after finishing the electrical wiring. The panel is fastened with the four enclosed screws.

Removal is done in opposite direction.

The sensor of the safety temperature limiter as well as the boiler sensor will be inserted into the sensor immersion pocket of the boiler.

Important: Do not crease or damage the capillary tubing of the safety temperature limiter.

For further information see documentation of the boiler manufacturer.

Accessories on demand

For easier installation optional swing-out aids can be ordered. These aids will be snapped into both left and right sides of the panel and prevent that the panel falls down when opening.

Electrical installation

The electrical installation is done at the back side of the boiler control panel via the plugged-in connection terminals corresponding to the identification on the coloured-marked connection pads.

Low voltage connecting terminals:

All blue marked connecting terminals work with safety low voltage and must not get into contact with the mains voltage.

At non-observance the instrument will definitely be destroyed and any warranty gets lost.

Electrical connection see next page.

Mains voltage connecting terminals:

Red marked connecting terminals principally may work with mains voltage according to the current operation conditions.

Electrical connection see next page.

Note:

Cables with mains voltage must be installed separate from low voltage cables (data bus, sensors etc.). It is strictly prohibited to use one cable for both voltages. Sensor cables and data bus cables may not be installed together with mains voltage cables supplying electrical appliance which are not suppressed according to EN 60555-2.

Terminal assignment

230 V\~ Connections

1 - Mains 230V\~ +6/-10%, 50 Hz
2 – Safety circuit 1
3 – Safety circuit 2
4 – Burner 1 (single step boilers)
5 – Burner 2 (double step boilers)
6 – Pump for direct heating circuit
7 – Domestic hot water charging pump
8 – Pump for mixed heating circuit 1
9 – Actuator mixing valve 1
10 – Pump for mixed heating circuit 2
11 – Actuator mixing valve 2
12 – Variable output 1 depending of programmation (see level HYDRAULIC)
13 – Variable output 2 depending of programmation (see level HYDRAULIC)

Sensor and data bus connections

14 – Outdoor sensor
15 – Sensor heat generator/boiler
16 – Domestic hot water sensor
17 - Flow sensor for mixed heating circuit 1
18 - Flow sensor for mixed heating circuit 2
19 – Variable input 1
20 - Variable input 2
21 – Variable input 3
22 - Solar panel flow sensor ^1)
23 – Solar tank sensor ^1)
24 - Pulse input
25 – Data bus T2B
26 – Data bus RS 485 ^2)

^1) Solar application only ^2) high efficiency condensing boilers only

Wall socket MS-K

Close-up of a vintage air conditioner control panel with buttons and display (no readable text or symbols)

Application:

The wall socket MS-K is used for wall mounting application of all types of standard units.

Type

The wall-mounted connection base is intended for the sole purpose of housing the standard unit.

After plugging the standard unit into the wall socket and after finishing the electrical wiring ready for start up.

Electrical installation

1- Break out the impressed cable inlets due to the required number and seize on top side or lower side of the wall socket according to the position of the cable channel.

Note:

Cable strain relief is prescribed if no cable duct is used.

2- Turn locking screws (1) horizontally and pull off terminal cover to the side.

3- Fix wall socket on a flat background using enclosed screws and plugs. Use drill pattern the enclosed

4- Electrical installation has to be carried out according to plant and connectivity as shown on next page.

The connecting terminals of terminal blocks X5 and X6 at the left side work with safety low voltage and must not get into contact with the mains voltage. At non-observance the instrument will

definitely be destroyed and any warranty gets lost.

The connecting terminals of terminal blocks X7 to X10 principally may work with mains voltage according to the current operation conditions.

The wall socket is equipped completely with screwless terminals. Press lever before inserting stripped wire into terminal.

5- Attach and clamp the side terminal-covers.
6- Insert standard unit with evenly distributed pressure. The electrical connection is done by plugging the instrument into the terminals at the socket print. Lock standard unit with both quick clamping devices left and right.

Note:

Cables with mains voltage must be installed separate from low voltage cables (data bus, sensors etc.). It is strictly prohibited to use one cable for both voltages. Use cable ducts equipped with separators, if necessary.

Terminal assignment

230 V\~ Connections

graph LR
    subgraph X7
        A["1"] -->|T1| B["L1(mains)"]
        C["2"] --> B
        D["3"] --> B
        E["4"] --> B
        F["5"] --> B
        G["6"] --> B
        H["7"] --> I["B4"]
        J["8"] --> K["B5"]
        L["9"] --> M["T6"]
        N["10"] --> O["T8"]
        P["11"] --> Q["T7"]
    end
    subgraph X9
        R["1"] --> S["HC"]
        T["2"] --> S
        U["3"] --> V["DHW"]
        W["4"] --> V
        X["5"] --> Y["M"]
        Z["6"] --> AA["MC1"]
        AB["7"] --> AC["LVO1"]
        AD["8"] --> AE["LVO2"]
        AF["9"] --> AG["M"]
        AH["10"] --> AI["MC2"]
        AJ["11"] --> AK["N (mains)"]
    end
    style X7 fill:#f9f,stroke:#333
    style X8 fill:#ccf,stroke:#333
    style X9 fill:#cfc,stroke:#333

Sensor and data bus connections Burner connections

X5 X6

graph TD
    A["1 -Data bus signal-"] --> B["Outdoor"]
    B --> C["Heat generator"]
    C --> D["Domestic hot water"]
    D --> E["Flow mixing circuit 1"]
    E --> F["Variable input 1"]
    F --> G["Variable input 2"]
    G --> H["Variable input 3"]
    H --> I["Flow mixing circuit 2"]
    I --> J["Solar panel flow"]
    J --> K["Solar tank"]
    K --> L["Pulse input"]
    style A fill:#f9f,stroke:#333
    style L fill:#f9f,stroke:#333

T1 Control terminal stage 1

T2 Control terminal stage 1

B4 Op. hours counter burner stage 1

B5 Op. hours counter burner stage 2

T6 Control terminal stage 2

T7 Control terminal stage 2

T8 Control terminal stage 2

L1 Mains 230 V\~ (live)

N Mains 230 V\~ (neutre)

Pumps and actuators

HC Pump for direct heating circuit

DHW Domestic hot water charging pump

MC1 Pump for mixed heating circuit 1

MC2 Pump for mixed heating circuit 2

1 m ▲ actuator mix. valve 1 (OPEN)

1 m ▼ actuator mix. valve 1 (CLOSE)

2 m ▲ actuator mix. valve 2 (OPEN)

2 m ▼ actuator mix. valve 2 (CLOSE)

L_v01^III Variable output 1 (live)

L_VO2 Variable output 2 (live)

Boiler – Data bus

Room control unit RS

Mounting location

a – for applications without room sensor If the internal room sensor is not to be activated the RS may be mounted at any location indoors.

b – for applications with room sensor The remote unit should be fixed at a height of approx.1.20 – 1.50 m at a place most representative of all rooms. It is recommended to chose an interior wall of the coolest day room (such as entrance halls). In order to ensure sufficient air circulation at the room station, it must be mounted to the wall with a gap inbetween.

The remote unit must not be mounted

• at locations exposed to direct sunlight (seasonal variations should be taken into account)
• close to heat-producing appliances (televisions, refrigerators, wall lamps, radiators etc.)
• onto walls heated by under plaster heating pipes or chimneys.

• onto outside walls

• in corners behind curtains or shelves (due to insufficient ventilation)
  – close to doors of unheated rooms (due to the influence of low temperature)

• on unsealed under-plaster wiring boxes (influence of external low temperatures due to the chimney effect of installation tubes)
• in rooms with radiators controlled by thermostatic valves (mutual influence).

Mounting

After removing the front panel by pressing the locating lug at the lower side the socket can be mounted at the desired location using the enclosed dowel pins and screws. The cable for the bus connection has to be led through the lower cut-out of the socket.

Recommended connecting cable:

$$ J - Y (S T) Y 1 \times 2 \times 0. 6 m m ^ {2} $$

Maximum length: 100 m

Note:

For new installations use a under-plaster wiring box for perfect wiring.

Exterior view of a white electronic device casing with visible internal components and mounting brackets (no text or symbols)

Locating lug

Terminal assignment

The wiring between remote unit and standard unit or boiler control panel has to be made by a shielded data bus cable at terminals A and B of both units. The connecting terminals may not be changed and have to be installed according to the labelling of the terminals A/B in the wall socket. Changing the terminals causes no displaying.

Technical line drawing of a mechanical or electrical component with labeled parts A and B, showing internal structure and mounting holes (no text or symbols beyond labels)

Socket (unit removed)

After completing the electrical wiring hang remote unit conclusively on top side according figure on page 11 and turn down until it clicks into the wall socket.

Electrical connections (control unit)

See installation instructions of control unit.

Data bus addressing

In order to guarantee a selective communication between remote units and control units it is necessary to set every remote unit in the bi-directional data bus system to the corresponding data bus address.

This concerns in the same way the coupling of control units for extension of heating circuits, which communicate on the same data bus line.

By this reason control units and remote units are equipped with data bus addresses.

Data bus address (control unit)

Single control units must always have the address 10. In heating plants with several control units (maximum 5) the main controller that works on the burner gets the data bus address 10, the remaining controllers have to be set to addresses 20, 30, 40 and 50 one after the next.

Adjustment of data bus address of the control unit

To adjust the data bus address in the control unit the corresponding specialist code must be entered in the data bus level first (see starting up the control unit).

Adjustment of data bus address of the remote unit

The assignment between the data bus addresses of the control units and remote units is to a fixed factory preset scheme in accordance with the following table:

Control unit Remote unit
Function	Data bus address	Heating circuit	Data bus address
Basic control unit	10	Direct circ.(HC)MC 1MC 2	111213
1. add-on unit	20	Direct circ.(HC)MC 1MC 2	212223
2. add-on unit	30	Direct circ.(HC)MC 1MC 2	313233
3. add-on unit	40	Direct circ.(HC)MC 1MC 2	414243
4. add-on unit	50	Direct circ.(HC)MC 1MC 2	515253

Adjustment of data bus address in the remote unit

A- First start-up

After completing the electrical installation and starting up the plant the complete segment character appears in the display of the remote unit.

Segment character

Following this, the desired language can be selected in accordance with the country code (DE, GB, FR, IT, NL, ES, PT, HU, CZ, PL, RO, RU, TR, S, N, BG) and activated.

Language

Onto that the device identification and data bus address is displayed:

Device identification

Type of control Software date Software-Version

Address adjustment (See table to the left)

After setting the data bus address by means of the rotary knob and confirming by pressing the same once the number of the corresponding control unit appears automatically:

Data bus address

Direct heating circuit Basic control unit (1)

Important:

Double reservation of data bus addresses are not permissible and do lead automatically to troubles in the data transfer and to faulty control characteristic of the heating system.

B – Changing data bus addresses

A data bus address can be changed subsequently as follows:

1 - Disconnect remote unit from data bus line (by loosening plug-in connector at the lower end)
2 - Plug-in connector again while pressing the rotary knob until the address adjustment appears in the display.
3 - Adjust new data bus address by means of the rotary knob and confirm by pressing the same once.

Equipment Outdoor sensor AF (OT)

Circular mechanical component with two mounting holes (no text or symbols visible)

Outdoor sensor AF 200

Mounting location

The outdoor sensor should be installed on the most exposed and coldest side of the building (north or north-west) so that it does not collect any direct sun light particularly in the morning.

Note: Chose the corresponding side of building due to the direction of the preferential living area.

Never mount sensor onto external heat sources such as chimneys, hot air from air shafts, sunlight or black undergrounds etc. since this will falsify the measured values considerably. The cable outlet must be directed downwards in order to avoid the intrusion of moisture.

Electrical installation

1- Install sensor cable to the sensor location
2- Loosen lid screws and remove top
3- Mount open sensor case with enclosed central fixing screw. Use sealing ring! Cable outlet must be directed downwards!
4- Insert sensor cable. The cable insulation must be encircled by the sealing lips of cable entry.
5- Set up electrical connection. For the electrical installation preferably a 2-core cable with at least sectional view of 1mm^2 is recommended.

The connection is made at the screw terminal block inside the sensor case and may be changed.

6- Put on lid again and screw it firmly with the case. Pay attention to correct seat of sealing ring.

Immersion sensor KVT

Coiled black cable or wire against white background (no text or symbols)

Options:

KVT 20/2/6 2 m cable length

Application: Boiler sensor, hot water sensor (for boiler integrated hot water tanks), return flow sensor

KVT 20/5/6 5 m cable length

Application: Hot water sensor (for add-on tanks, buffer tanks, solar collector return flow sensor etc.

Mounting location:

In the immersion sleeve of the respective application.

Mounting into boilers or other heat sources

Bend clutch spring to sensor top and insert sensor together with the capillary sensors of boiler thermostat (KTR), safety temperature limiter (SLT) and boiler thermometer (KTA) into the immersion sleeve. Use spring clip if necessary.

Mounting into hot water or buffer tanks

Bend clutch spring to sensor top and insert sensor according to the instructions of the manufacturer into the dry immersion sleeve of the respective hot water tank.

Terminal assignment

Connect sensors at the corresponding terminals of the respective control unit (see terminal diagram). The terminals may be changed.

Flow sensor VF

Close-up of a mechanical component with a black cable and metallic connector (no visible text or symbols)

Feeding sensor VF...

Options:

VF 202 2 m cable length

Application: Contact sensor for mixer controlled heating circuits onto flow- or return pipes

VF 204 4 m cable length

Application: see VF 202

Mounting location:

Behind the mixer circuit pump, in the flow, ata minimum distance of 50 cm.

In case of use as return flow sensors:

Controlled flow temperature addition by means of mixing valve

Bypass circuit by means of a bypass pump Boiler bypass pump

Mounting

Clean flow or return pipe thoroughly and apply heat conducting paste.

Attach sensor on the contact place in a flush way to the tube surface by means of the enclosed clamping band.

Pay attention to firm seat!

Terminal assignment

Connect sensors at the corresponding terminals of the respective control unit (see terminal diagram). The terminals may be changed.

Flue gas sensor / solar panel flow sensor

Coiled black cable with two wires extending outward (no text or symbols visible)

Immersion sensor PT 1000/6

Options:

PT1000/6 2.5 m cable length

Application: Flue gas temperature Collector flow temperature

Mounting location:

- In the flue gas tube in the minimum distance of the double tube diameter

- In the immersion sleeve of the solar collector.

Mounting in the flue gas tube

Mount sensor clamp according to illustration below. Determine immersion depth into the core flow of the flue gas and fix sensor.

Terminal assignment

Connect sensors at the corresponding terminals of the respective control unit (see terminal diagram). The terminals may be changed.

Resistance values of the sensor elements versus temperature

Heat generator/boiler sensor KVT 20

Outdoor sensor AF 200 DHW tank sensor/buffer sensor KVT 20

Feeding sensor VF 202/204

Boiler sensor (solid fuel) KVT 20

T (°C)	R (kΩ)
- 20	1,383
- 18	1,408
- 16	1,434
- 14	1,459
- 12	1,485
- 10	1,511
- 8	1,537
- 6	1,563
- 4	1,590
- 2	1,617
± 0	1,644
2	1,671
4	1,699
6	1,727
8	1,755
10	1,783
12	1,812
14	1,840
16	1,869
18	1,898
20	1,928
25	2,002
30	2,078

T	R (kΩ)
10	1,783
12	1,812
14	1,840
16	1,869
18	1,898
20	1,928
25	2,002
30	2,078
35	2,155
40	2,234
45	2,314
50	2,395
55	2,478
60	2,563
65	2,648
70	2,735
75	2,824
80	2,914
85	3,005
90	3,098
95	3,192
100	3,287

(°C)

Flue gas sensor, solar panel sensor PT1000

T (°C)	R (kΩ)	T	R (kΩ)(°C)
40	1,155	150	1,573
50	1,194	160	1,611
60	1,232	170	1,648
70	1,271	180	1,685
80	1,309	190	1,722
90	1,347	200	1,758
100	1,385	210	1,795
110	1,423	220	1,832
120	1,461	230	1,868
130	1,498	240	1,905
140	1,536	250	1,941

Starting up the control unit

Display test and device identification

During the first switch-on of the control unit or at return of voltage after power failure all available display segments will temporary appear:

Segment character

The desired language can be selected.

Language

Onto that device identification follows:

Provided that there is not any error message, the basic display with date, time and current boiler temperature will appear in the display.

Basic Display

An active summer switch-off is represented by a sunshade symbol ( ).

Summer switch-off active

With acting frost protection function an ice crystal symbol appears in the display (※).

Frost protection active

Code-Input

Specialist code

After entering the specialist code the parameters which are certain for the heating specialist are released and can be processed according to the heating plant design.

To enter the specialist code the buttons and have to be pressed simultaneously for approx. 3 seconds until the request to enter the code will be displayed.

Every flashing digit can be modified with the rotary knob according to the code number and confirmed by pressing the knob once. The further digits are treated in same way.

After entering all digits correctly and confirming the last digit the specialist code is accepted by displaying INSTALLER OK, with wrong entry the message CODE ERROR will appear.

The factory preset code for the specialist is 1234

Note: Contact boiler manufacturer if the factory preset specialist code is not accepted!

Important: Released parameters are locked again if for the duration of no further service occurs. In this case the specialist code must be entered again.

Automatic SET-Function

This function allows to remove heating or hot water circuits from operation.

The control circuits are registered automatically, if their corresponding sensors are connected and provide acceptable measuring values. Control circuits without the corresponding sensors remain automatically without consideration.

The automatic set function will be activated after every switch-on.

Automatical activation

Provided that the auto-set function is turned on (see SYSTEM-Level - parameter 14) and the initial start-up date was not yet stored, connected or disconnected sensors will be registered automatically at every switch-on of the control unit. During this time error messages of sensors (short circuit or interruption) will be suppressed.

After the initial start-up date was stored, a modified sensor configuration can only be taken over by manual activation.

Manual activation

AUTO-SET function can be manually activated at any time by keeping the rotary knob pressed during the segment test when switching control unit on.

graph TD
    A["Basic Display"] --> B["Device 2233B/VICE 20 V 3.3"]
    B --> C["Auto Set"]
    C --> D["Display"]

The auto set function registers the following sensors:

• Outdoor sensor
• Flow sensor 1
• Flow sensor 2
• Hot water tank sensor
  – Heat generator /boiler sensor

Furthermore the auto set function is carried out only, if the control circuits which are assigned to the corresponding sensors were parameterised in the respective levels.

For the hot water sensor:

HYDRAULIC Level

Parameter 2 - Function DHW charging pump Setting range OFF or 1 (DHW charging pump)

For the supply sensor 1:

HYDRAULIC Level

Parameter 3 - Function mix. heating circuit 1 Setting range OFF or 3 (mix. heating circuit)

For the supply sensor 2:

HYDRAULIC Level

Parameter 4 - Function mix. heating circuit 2 Setting range OFF or 3 (mix. heating circuit)

For the boiler sensor:

Level HEAT GENERATOR

Parameter 1 – Type of heat generator Setting range OFF or 1 (1-stage-burner)

With that a programmed parameterisation will not be changed again, the current values will be checked before. A modification is carried out only if one of the adjustments listed above is given. In this way the auto set function for example never can cancel a return flow increase of mixer heating circuit 2, or can function it to a mixer heating circuit.

Alarm messages

In order to set up a precise diagnosis in the case of malfunction the control system is equipped with an extensive alarm message system. An occurring error is always announced in the display of the corresponding basic control and stored.

There are five different categories of alarm messages:

1 - Sensor alarm messages

Sensor values which are not in their respective measuring range will either be sensor breaks or sensor short circuits. They appear with an error message according to their use.

2 - Boiler alarm messages

This messages depend on the actual switching conditions. They appear with the corresponding error message, depending on the version and allocation.

3 - Logical alarm messages

These messages will react on the actual control result. They appear with the corresponding error message, depending on the version and allocation.

4 - Bus alarm messages

These messages display address problems such as double addresses or not recognizing addresses within the data bus system. They appear with the corresponding error message, depending on the version and allocation.

5 - Alarm messages from boiler control

These alarm messages are transmitted by the boiler control system via a data interface and are displayed or stored in the control unit. More detailed information regarding alarm messages can be found in the boiler documentation.

Display and further processing of logical error messages can be enabled or disabled by using the respective parameterisation in THETA (see SYSTEM level-parameter 13 logical error message).

Further processing in case of alarm messages:

• Alarms will be indicated in the basic display of the control unit
  – System errors appear in the information level beside the corresponding information
• Alarm messages are loaded into a alarm message log (see description below)
• Alarm messages activate in case of corresponding parameterisation an alarm output for optical or audible signallers.
• Alarm messages are transmitted via data bus to corresponding gateways.

Table of alarm messages:
Sensors and variable inputs:

Designation Alarm	cause Code
Outdoor sensor break 10-0
Outdoor sensor short circuit 10-1
Boiler sensor	break 11-0
Boiler sensor	short circuit 11-1
Flow sensor 1	break 12-0
Flow sensor 1	short circuit	12-1
DHW sensor	break 13-0
DHW sensor	short circuit	13-1
Variable input 2	break 14-0
Variable input 2	short circuit 14-1
Variable input 2	alarm 14-7
Variable input 3	break 15-0
Variable input 3	short circuit 15-1
Variable input 3	alarm	15-7
Variable input 1	break 16-0
Variable input 1	short circuit 16-1
Variable input 1	alarm	16-7
Sol.panel/buffer	break	17-0
Sol.panel/buffer	short circuit	17-1
Flow sensor 2 break	18-0
Flow sensor 2 short	circuit 18-1
Solar panel sensor	break 19-0
Solar panel sensor	short circuit 19-1

Heat generator:

Burner 1 not OFF	30-2
Burner 1 not ON 30-3
Burner 2 not OFF 31-2
Burner 2 not ON 31-3
Flue gas exceeded	33-5
Flue gas STL triggered	33-8

Temperatures:

Heat generator	not reached	50-4
DHW	not reached	51-4
Flow mixer circuit 1	not reached	52-4
Flow mixer circuit 2	not reached	53-4
Room HC	not reached	54-4
Room-mix. circuit 1	not reached	55-4
Room-mix. circuit 2	not reached	56-4

Data bus errors

Activity	no H-GEN-signal	70-6
Activity	no master	70-8

Condensing boiler control error

Malfunction	locking
Malfunction	blocking	XXX

(display option dependent upon boiler control system)

Malfunction log

The control unit has a malfunction log in which a maximum of 20 alarm messages can be saved. The alarm messages are displayed with date, time and malfunction type (error number). The query is carried out in the sequence of the entered alarm messages in the level ALARM.

The last (= most recent) alarm message is in first position (No. 01); the previous alarm messages are shifted down by a position upon each new alarm message. The last (20.) alarm message is deleted when a new message appears.

Alarm messages from condensing boiler controls represent a special feature. If enabled (SYSTEM parameters 27 and 28), these will be written into an own alarm message memory.

Note: Only the last 5 alarm messages will be displayed in ALARM level in the room devices. System parameters 27 and 28 are not available for room units!

Heating system information Heating system temperatures

After entering of the information level by means of the information key ⓘ a query of all available plant and system temperatures can be made using the rotary pushbutton.

Provided that in the following table under the column Display Value a nominal value is listed, it will appear when pressing the rotary push-button.

The following information appear only under the indicated display conditions. Some displays are not available and are skipped according to the respective type of control.

Information	Displayed value	Remarks	Application
Outdoor temp. (1)	Average value / current value	Outside sensor connected
Outdoor temp. (1)	Min-max-value from 0.00 to 24.00 h)	Outside sensor connected
Outdoor temp. 2	Average value / current value	Outdoor sensor 2 at var. input
Outdoor temp. 2	Min-max-value from 0.00 to 24.00 h)	Outdoor sensor 2 at var. input
EM-SET (Energy Management setpoint value)	Maximum warm water and maximum heating circuit setpoint value in the system	Installer level
Heat generator (1)	Nominal/actual value	Only if heat generator is defined (...2..)
Heat generator 2	Nominal/actual value Sensor BS 2 at variable input (...2..)
Return flow (b. contr.)	Actual value	Return flow sensor connected at boiler control	(..C..)
Flue gas (b. contr.)	Actual value	Flue gas sensor connected at boiler control	(..C..)
Return flow Nominal/actual value		Return flow sensor at var. input and return temp. increasing activated
External blocking	Block mode ON, OFF	Ext. blocking at variable input
Flue gas	Limit value/ actual value	Flue gas sensor at variable input	(..2..)
Hot water tank (1)	Nominal/actual value	Only with hot water tank	(..B..)
Hot water tank 2	Nominal/actual value	Hot water sensor 2 at var. input	(..B..)
Hot water thermostat	Charging status ON/OFF	Instead of an electronic sensor	(..B..)
Heat requirement via contact (VI-1)	Requirement ON/OFF	Switching contact at variable input
Heat requirement via contact (VI-2)	Requirement ON/OFF	Switching contact at variable input
Heat requirement via contact (VI-3)	Requirement ON/OFF	Switching contact at variable input
Flow Mixed circuit 1	Nominal/actual value	Flow sensor mix. heating circuit 1 connected	(..3..)
Flow Mixed circuit 2	Nominal/actual value	Flow sensor mix. heating circuit 2 connected	(..33..)
Ambient temper. Direct heat. circuit	Nominal/actual value	Remote control necessary (.2..)
Ambient temper. Mix. heat. circuit 1	Nominal/actual value	Remote control necessary (.3..)
Ambient temper. Mix. heat. circuit 2	Nominal/actual value	Remote control necessary (.33..)
Thermostat function Direct heat. circuit	THERMOSTAT DC	Room thermostat function activated OFF = no room temperature limit	(.2..)
Thermostat function Mixed circuit 1	THERMOSTAT MC1	Room thermostat function activated OFF = no room temperature limit	(.3..)
Thermostat function Mixed circuit 2	THERMOSTAT MC2	Room thermostat function activated OFF = no room temperature limit	(.33..)
Solid fuel boiler upper buffer sensor	Actual value Nominal/actual value	Solid fuel charging pump at var. output Buffer charging pump at var. output	(Type ..VV..)(Type ..VV..)
Lower buffer sensor Solar panel sensor	Nominal/actual value Actual value	Buffer sensor 2 at variable input Solar pump at variable output	(Type ..VV..)(Type ..VV..)
Solar tank Actual value	Solar pump at variable output (Type ..VV..)
Solar panel return flow sensor	Actual value	Solar pump at variable output Return flow sensor at var. input	(Type ..VV..)

Operating states

After entering the information level by means of the information key ⓘ all available operating states and usage data such as counter readings, specified

performance data etc. can be requested after each other by turning the rotary push-button anti-clockwise.

Information	Display (Example)	Function	Application
Statusdirect circuit	AUTO-P1 ECOHC ON	Operating mode / ⏻-program/modesstatus of heating pump	(..2..)
StatusMixed circuit 1	AUTO-P1 ECOMC1 ON	Operating mode / ⏻-program/modesstatus of heating pump	(..3..)
Status actuatorMix. valve-1	MIX. VALVE-1OPEN	Display of directionOPEN-STOP-CLOSE	(..3..)
StatusMixed circuit 2	AUTO-P1 ECOMC2 ON	Operating mode / ⏻-program/modesstatus of heating pump	(..33..)
Status actuatorMix. valve-2	MIX. VALVE-2STOP	Display of directionOPEN-STOP-CLOSE	(..33..)
Status heat gener.stage 1	HEAT GENER.ON	Switching state of heat generatorSingle stage or stage 1 (2-stage)	(..2..)
Status heat gener.stage 2	HEAT GENER.ST-2 OFF	Switching state of heat generatorStage 2	(..22..)
Status modulatingheat gener.	MODULATION57% 60%	Modulating single stage heat generator, nominal and actual value	(Type ..VV..)
StatusDHW circuit	AUTO-P1 ECO DHW ON	Operating mode / ⊙-program/mode status of DHW charging pump	(..B..)
Function & statusDirect circuit pump	OUTPUT HC-PEO ON	Information about the assigned function and switching state of pump	(..2..)
Function & statusVariable output 1	OUTPUT VO-1SOP OFF	Information about the assigned function and switching state of var. output 1	(Type ..VV..)
Function & statusVariable output 2	OUTPUT VO-2SOP OFF	Information about the assigned function and switching state of var. output 2	(Type ..VV..)
Activationsheat generator (St.1)	NR OF STARTS1234 (ST-1)	Accumulated number of startsSingle stage or stage 1 (2-stage)	(..2..,..22..)
Operating hoursheat generator (St.1)	OPER. HOURS246	Accumulated operating hoursSingle stage or stage 1 (2-stage)	(..3..)
Activationsheat generator St. 2	NR OF STARTS268	Accumulated number of startsStage 2	(..3..)
Operating hoursheat generator St. 2	OPER. HOURS45 ST-2	Accumulated operating hoursStage 2	(..33..)
Test temp. sensorfor test purpose	INFO-TEMP.50°C	Ext. sensor for test purpose atvariable input	(..33..)
Operating modeext. modem control	MODEMAUTO	Actual operating mode of externalmodem at variable input	(..2..)
Actual solar power	HEAT POWER43 KW SOL	Act. power of the solar systemin kW	(Type ..VV..)
Solar energybalance	HEAT CONS.2468 KWh SOL	Accumulated thermal capacityof the solar system in kWh	(Type ..VV..)
Activationssolar panel pump	NR OF STARTS296 SOL	Accumulated number of starts ofthe solar panel pump	(Type ..VV..)
Operating hourssolar panel pump	OPER. HOURS478 SOL	Accumulated operating hoursof the solar panel pump	(Type ..VV..)

Application:

(..2..) 1-stage heat generator

(..22..) 2-stage heat generator

(..3..) with 1 mixing circuit

(..33..) with 2 mixing circuits

(..B..) DHW circuit

(..VV..) with 2 variable outputs

(C, OT) high efficiency condensing boilers

Level synoptic
Entry into the level selection: Hold rotary push-button pressed for approx. 3 seconds - automatic call of time programs Select required level via rotary push-button and confirm, enter code if necessary

Programming			Configuration
PARAMETER NO.	TIME-DATE	TIME PROG-RAMS	HYDRAULIC	SYSTEM-PARAMETERS
1	Time (Min/hrs)	see programming of time-programs	Language
2	Year		Output SOL-P	Enable time programs
3	Day-Month		Output MC1	Control mode
4	Change Su-Wi-time		Output MC1	Summer switch-off
5			Output HC System frost protection
6			Output VA-1	Heat requiring contact VI-1
7			Output	Heat requiring contact VA-2 VI-2
8			Input	Heat requiring contact VI-1 VI-3
9			Input VI-2	Climate zone
10			Input VI-3	Type of building
11			Indirect raising of return flow	Time for autom. exit
12				Anti blocking protection
13				Logical alarm
14				Automatic Set -Function
15
16
17
18				Release cycle temp.
19				Frost protection mode
21
23				Locking code for user level
24				Scaling accord. to Fahrenheit
25
26
27				Alarm messages boiler control
28				Alarm messages 2
29
34
35
37
				Reset to factory preset

PARAMETER NO.	Parameterization (Heating circuits, controlled systems)
	DHW(..B..)	UNMIXEDCIRC. HC(..2..)	MIXEDCIRCUIT 1MC1(.3..)	MIXEDCIRCUIT 2MC2(.33..)	HEATGENE-RATOR(.2..22..)	COMMONFLOWSENSOR
1	ECO DHW temperature	Reduced mode	Reduced mode R	Reduced mode Type	H-Gen	P-band XpSVLF control
2	Legion.prot.(day)	Heating system(exponent)	Heating system(exponent)	Heating system(exponent)	Start-up protection	Sample time TaSVLF control
3	Legion.prot.(time)	Enable room influence	Enable room influence	Enable room influence	Heat generatormini.temp.limit	I-band TnSVLF control
4	Legion.prot.(temp.)	Room factor	Room factor Room factor		Maximum temp. limit
5	DHW sensor type	Adaptationheat. charact.	Adaptationheat. charact.	Adaptationheat. charact.	Minimum temp. limiting mode
6	DHW max.temp. limit	Switch-on optimization	Switch-on optimization	Switch-on optimization	Heat generator sensor mode
7	DHW operat.mode	Heating limit	Heating limit Heating limit		Minimum burner run time
8	Discharge protection	Room frost protection limit	Room frost protection limit	Room frost protection limit	Burner switch. differential I
9	Temperature parallel shift	Room thermostat function	Room thermostat function	Room thermostat function	Burner switch. differential II
10	DHW switching differential	Outdoor sensor assignment	Outdoor sensor assignment	Outdoor sensor assignment	Time delay stage II
11	Ext. run time SOL-P	Constant temp. setpoint	Constant temp. setpoint	Constant temp. setpoint	Enabling mode stage II
12	Time program CIR.	Minim. temp. limit HC	Minim. temp. limit HC	Minim. temp. limit HC	DHW charging mode stage II
13	Econ. interval CIR. (break)	Maxim. temp. limit HC	Maxim. temp. limit HC	Maxim. temp. limit HC	Flow time boiler pump
14	Econ. interval CIR. (period)	Heat generator parallel shift	Heat generator parallel shift	Heat generator parallel shift	Extended run time boiler pump
15		Extended pump run time	Extended pump run time	Extended pump run time	Ext. run time feed pump
16		Compos. floor drying function	Compos. floor drying function	Compos. floor drying function	Flue gas temp. monitoring
17	Behaviour H-GEN ext. run time		Return flow max. temp. limit	Return flow max. temp. limit	Flue gas temp. limit
18
19
21	Valve run time Valve run time
23		Room control P-range	Room control P-range	Room control P-range
24		Room control Adaptation time	Room control Adaptation time	Room control Adaptation time
25		Operating mode Holiday	Operating mode Holiday	Operating mode Holiday	Outdoor temp. locking
26					Basic load parallel shift
27						HC mini temp. limit
28						Diff. Min. lim. HC
29					H-GEN forced discharge
34					Heating power limiting
35					DHW power limiting
37					Oper. hours counter
					Reset stage I
		HC name	HC name HC name		Reset stage II

Parameters without background colour r: accessible to the user
Parameters with grey background: Installer parameter, only accessible with correct installer code.

Parameterization					Add-on modules	Communic.	Service
Return flow temperature raising	Solar (Type..VV..)	Solid fuel (Type..VV..)	Buffer (Type..VV..)	Cascade control	......	Data bus	Relay test	Alarms 2	Alarms 2	Sensor calibration	Par.Nr.
Return temp. setpoint	Switch-on differ. collector-buffer	Minimum temp. limit	Minimum temp. limit	Switching differential	refer to the add-on module documentation	Bus address Basic unit	Heat generator.	1	1	Type 1
Switch-off differential	Switch-off differ. collector-buffer	Maximum temp. limit	Maximum temp. limit	Time delay ascend. seq.		Bus access RS HC	Heat. pump (HC)	2	2	Outdoor sensor	2
Extended pump run time	Min. run time solar pump	Switch-on differ. boiler-buffer	Heat generator parallel shift	Time delay descend. seq.		Bus access RS MC1	Heat. pump MC 1	3	3	Boiler sensor 3
	Max. solar panel temp.	Switch-off diff. boiler-buffer	Switching differential	Sequential switch-over pwr.		Bus access RS MC2	Actuator Mix.valve 1	4	4	DHW tank sensor	4
	Max. buffer temperature	Inhibition heat generator	Forced heat dissipation	Reverse boiler sequence			Heat. pump MC 2	5	5	Flow sensor MC1	5
	Solar operating mode		Drain function Switch-on differ.	Leading stage			Actuator Mix.valve 2	6	6	Flow sensor MC2	6
	Inhibition heat generator		Drain function Switch-off differ.	Peak load boiler			DHW charging pump	7	7	Solar panel sensor	7
	Change priority/parallel mode		Buffer start-up protection	Changeover			Output VA-1	8	8	Buffer sensor	8
	Solar energy balance		Buffer discharge protection	DHW quick activation		Output VA-2 9 9 Sensor VI-1				9
	Reset sol. energy balance		Buffer operating mode						10	10 Sensor VI-2	10
	Volume flow solar fluid		Ext. run time BULP						11	11 Sensor VI-3	11
Fluid density									12	12
	Fluid heat capacity								13	13
	Final switch-off temperature								14	14
	Test cycle sol.load.sw.								15	15
	Change over temperature								16	16
									17	17
									18	18
									19	19
									20	20
											21
											22
											23
											24
											25
											26
											27
											28
											29
											36
											37

Synoptic of the specialist parameters and control options

HYDRAULIC Level

The parameters of this level refer to the general hydraulic system of the heating plant as well as to the functionality and configuration of the programmable inputs and outputs for the corresponding plant components. They are not available in room stations!

Parameter	Designation Setting range / Setting values		Factory preset	Individual setting
02	DHW charging pump output (Type ..B..)	OFF No function1 DHW charging pump4 DHW circulation pump5 DHW electrical heating element	1
03	Mixing circuit 1 (MC1) output (Type ..3..)	OFF No function2 Direct circuit (outdoor temp. contr.)3 Mixing circuit (outdoor temp. contr.)6 Constant temp. contr.7 Fixed value contr.8 Raisin g return temp.	3
04	Mixing circuit 2 (MC1) output (Type ..33..)	Setting range and assignment see parameter 03	3
05 Direct circuit	1 (HC) output	OFF No function2 Direct circuit pump4 DHW circulation pump5 DHW electrical heating element6 Constant temperature control10 Feed pump11 Boiler circuit pump 112 Boiler circuit pump 213 Alarm output14 Timer15 Solar charging pump (Type ..VV..)21 Parall. H-GEN-clearance27 Hydraulic buffer release	2
06	Variable output 1 (Type ..VV..)	OFF No function4 DHW circulation pump5 DHW electrical heating element9 Boiler return pump10 Feed pump11 Boiler circuit pump 112 Boiler circuit pump 213 Alarm output15 Solar charging pump16 Buffer charging pump17 Solid fuel boiler pump19 Solar change over charging valve20 Solar forced heat removal21 Parall. H-GEN-clearance26 Primary pump27 Hydraulic buffer release	OFF
07	Variable output 2 (Type ..VV..)	Setting range and assignment see parameter 06	OFF
08 Variable input 1		OFF No function1 Outdoor sensor 22 Boiler sensor 23 DHW tank sensor 24 Buffer sensor 25 Heat requirement contact6 External alarm input7 Return flow max. temp. limit (MC1)8 Return flow max. temp. limit (MC2)9 Return sensor (bypass pump)10 External blocking (heat generator)11 External switching modem12 External information13 Common flow senso r
08 Variable input 1		14 Solar panel return senso r16 Flue gas sensor17 Boiler sensor (solid fuel)18 Solid fuel buffer sensor19 Buffer sensor 1	OFF
09	Variable input 2(Type ..VV..)	Setting range and assignment see parameter08 without parameter 16 (flue gas sensor)	OFF
10	Variable input 3(Type ..VV..)	Setting range and assignment see parameter08 without parameter 16 (flue gas sensor)	OFF
11	Indirect raising of return temperature via mixing valve	OFF, ON (only Type ..3.., ..33..)	OFF

SYSTEM Level

The parameters in this level refer to the general limiting parameters and setting values in the heating system to be used.

Parameter	Designation Setting range / Setting values		Factory preset	Individual setting
LANGUAGE	Language selection	DE German CZ CzechGB English PL PolishFR French RO RomanianIT Italian RU RussianNL Dutch TR TurkishES Spanish S SwedishPT Portuguese N NorwegianHU Hungarian BG Bulgarian	DE
TIME PROGRAM	Number of enabled time programs	P1 Only one time program enabledP1-P3 Three time programs enabled	P1
CONTROL MODE	Enabling of separate control mode setting (room temp. specific. and operat. modes)	1 Common setting for all heating circuits2 Individual setting for every heating circuit	1
SUMMER		OFF no functionSystem frost protection...30 °CSwitch-off at set value	20 °C
05	System frost protection temperature	OFF no function-20°C...Summer switch-offFrost protection at set value	3 °C
06	Heat requiring contact at VI-1	1 Direct circuit (HC)2 Mixed circuit 13 Mixed circuit 24 DHWALL All circuits	1
07	Heat requiring contact at VI-2 (Type .. (Type ..VV..)	Settings see parameter 06	1
08	Heat requiring contact at VI-2 (Type .. (Type ..VV..)	Settings see parameter 06	1
09	Climate zone	-20...0 °C	-12 °C
10 Type of building		1 light construction2 medium construction3 heavy construction	2
11	Time for automatic exit (return to basic display)	OFF No automatic return0.5...5 min Automatic return to the basic display according to the set time	2 Min
12	Pump and mix valve forced operation (Anti-blocking protection)	ON activeOFF not active	ON
13	Logical malfunction messages	OFF no displayON Display active	OFF
14	Automatic SET-Function	OFF automat. sensor recognition deactivatedON automat. sensor recognition activated	OFF
18	Release cycle temperature	OFF cycle temperatures blockedON cycle temperatures released	ON
19	Frost protection	OFF permafrost protection according to adjustment in parameter 05- plant frost protection0.5...60 min cyclic operation	OFF
23	Anti-blocking for	OFF (0000) no blockON (0001...9999) block	OFF
24	Temperature display in °Fahrenheit	OFF display in °C and KON display in °F	OFF
27*	Alarm messages system handlingAutomatic boiler control	1 Shown on display screen only2 Message from system interlocks3 Messages from interlocks and blockages into the system4 Message from interlocks, blockages and warnings into the system	OFF
28	Alarm message memory 2 OFF, ON		OFF
RESET Reset to factory preset		in dependence on access code only to released parameters

* Function dependent upon support from boiler control system

DOMESTIC HOT WATER (Type ..B..) Level

This level comprises all parameters which are necessary to program the DHW circuit with the exception of the operating time programs.

Parameter	Designation Setting range / Setting values		Factory preset	Individual setting
DHW NIGHT	Hot water economy temperature	5 °C ... DHW maximum temperature	40 °C
LEGION. PROT. DAY	Day for legionella protection	OFF No legionella protectionMo...Su Legionella protection on the specified dayALL Legionella protection every weekday	OFF
03	Time for legionella protection	00:00...23:00 hour	02:00
04	Temperature for legionella protection	10 °C ... DHW maximum temperature	65 °C
05	Type of DHW temperature measurement	1 electronic temperature sensor2 mechanical thermostat	1
06	DHW- temperature limit	20 °C ... maximum boiler temperature	65 °C
07	DHW operating mode	1 parallel mode2 Priority mode3 Conditional priority4 Weather responsive parallel mode5 Priority mode with intermediate heating6 Priority-separation circuit7 External operation	2
08	DHW tank discharge protection	OFF No discharge protectionON Discharge protection activated	ON
09	Boiler parallel shift during DHW charging	0 ... 50 K;Difference between the DHW charging temperature and DHW setpoint	15 K
10	DHW switching differential	2 ... 20 K;Amount of DHW switching differential, symmetrical to the DHW setpoint	5 K
11	DHW charging pump Extended running time	0 ... 60 Min	5 Min
12	Time programm circulation pump	AUTO - Active DHW time program1 - P1, direct heating circuit2 - P2, direct heating circuit3 - P3, direct heating circuit4 - P1, mixing circuit 15 - P2, mixing circuit 16 - P3, mixing circuit 17 - P1, mixing circuit 28 - P2, mixing circuit 29 - P3, mixing circuit 210 - P1, DHW circuit11 - P2, DHW circuit12 - P3, DHW circuit	AUTO
13	Economy nterval – cir. pump (no pulse period)	0 Min ... setpoint of parameter 14;time of circulation pump stop	5 Min
14	Economy nterval – cir. pump (Period duration)	1... 60 MinDuration = shutdown time + operating time	20 Min
17	Behaviour of heat generator during the extended run time	AUTO - Setpoint value to H-GEN as requiredOFF - H-GEN off	AUTO

Level DIRECT CIRCUIT (2.., 22..)

MIXING CIRCUIT 1 (..3..)

MIXING CIRCUIT 2 (..33..)

This level contains all necessary parameters for the programming of the direct (unmixed) and/or the mixed heating circuits with the exception of the operating times programs.

Parameter	Designation Setting	range / Setting values	Factory preset	Individual setting
RED. HEATING	Type of reduced mode	ECO - Switch-off mode (frost protection)RED - Reduced mode	ECO
HEAT. SYSTEM	Heating system (exponent)	1,00 ... 10,00	HC =1.30MC =1.10
03	Room influence (with room unit )	OFF Room sensor deactivated1 Room sensor enabled2 Room sensor enabled, operation of room control unit blocked3 only display mode (room temp.)	OFF
04	Room factor	OFF, 10 ... 500 %, RC (only room control)	OFF
05	Adaptation heating curve	OFF, ON	OFF
06	Optimization (start)	OFF, 1 ... 16 h	OFF
07	Heating limit	OFF, 0.5 ... 40 K	OFF
08	Room frost protection limit	5 ... 30 °C	10 °C
09	Room thermostat function	OFF, 0,5 ... 5 K	OFF
10	Outdoor sensor assignment(only if VI n = out.sensor 2)	0 Control to mean value of out.sensor 1 + 20 Control to out.sensor 1 only2 Control to out.sensor 2 only	0
11	Constant temperature setpoint	10... 95 °C (only if output has been set to constant (CC) or fixed value control (FR))	20 °C
12	Minimum flow temperature limit	10 °C ... Maximum temperature limit (Parameter 13)	20 °C
13	Maximum temperature limit	Minimum temperature limit (parameter 12) ... maximum temperature limit H-GEN (H-GEN-parameter 04)	75 °C
14	Heating circuit parallel shift -5	... 20 K	HC=0MC=4
15	Heating pump (MC1, MC2) extended running time	0 ... 60 Min 5 Min
16	Screed function (profile drying) (With HC only if the relevant circuit is enabled exclusively)	OFF Function switched off1 Function heating2 Occupation suitable heating3 Function and occupation suitable heating	OFF
21	Valve run time (only for MC1 and MC2)	10...600	120
23*	P-band room control	1...100 %/K 8
24* I-band Tn room control 5...240 Min.			35
25 Operating mode Holiday STBY, RED			STBY
HC-name	Heating circuit name 00000 ...	ZZZZZ empty

* only if remote unit is room controller (PARAMETER 04 = RC)

HEAT GENERATOR LEVEL (2..., 22...)

The parameters in this level refer to the type of the relevant heat generator and to the corresponding specific control functions.

Parameter	Designation Setting range / Setting values		Factory preset	Individual setting
01	Heat generator type	OFF without heat generator1 Oil/Gas 1 stage (.2..)2 Oil/Gas 2 stage (.22..)3 Oil/Gas 2 x 1 stage (.22..)4 variable burner5 Automatic boiler control (.C../.OT..)**	1
02*	Start-up protection	OFF no start-up protection1 Start-up protection on minim. temp. limit2 Start-up protection on outdoor reference3 Start up protection separated	1
03*	Heat generator minimum temperature limit	5 °C ... Maximum temperature limit	38 °C
04*	Heat generator maximum temperature limit	Minimum limit ... Set limit maximum limit H-GEN	80 °C
05*	Heat generator minimum temperature limiting mode	1 Minimum temperature limit at heat requirement2 Restricted minimum temp. limit3 Permanent minimum temp. limit	1
06*	Heat generator sensor mode	1 Burner switch off in case of defect2 External Burner switch off3 Burner enabling in case of defect !!!Consider warnings!!!	1
07*	Minimum burner run time	0 ... 20 Min	2 Min
08*	Burner switching differential I (SD I)	1-stage: 2 ... 30 K2-stage: 2 ... (SDII - 0,5K)	6 K
09*	Burner switching differential II (SD II) (.22..)	(SD I + 0,5 K) ... 30 K	8 K
10*	Time delay stage 2 (.22..)	0 ... 60 min (0 = 10 Sec)	0
11*	Enabling mode stage II (.22..)	1 Unlimited enabling during start-up release2 Time out during start-up release	2
12*	DHW charging mode stage 1/2 (.22..)	1 DHW charging with delayed enabling of stage 22 unlimited DHW charging stage 23 DHW charging with stage 1 only	1
13*	Flow time boiler circuit pump/parallel. heat generator release	0 ... 10 Min 0 Min
14*	Extended run time boiler circuit pump	0 ... 60 Min 2 Min
15*	Extended run time feed pump or primary pump	0 ... 60 Min 2 Min
16*	Flue gas temperature monitoring	OFF displays only flue gas temperature0 ... 60 min Heat generator blockage in case of exceeding limit for the set timeSLT Heat generator blockage in case of exceeding limit	OFF
17*	Flue gas temperature limit	50 ... 500 °C	200°C
25	Outdoor temp. locking	OFF, -20...+30 °C	OFF
26	Basic load parallel shift (only when used in cascade mode)	0...60 K	10 K
27*	Heat circuits minimum temperature limit	5 °C...KTmin(only if start up release is separated - Parameter 02 = 3)	36 °C
28*	Switching differential Heat circuits minimum temperature limit	2 K...20 K (only if start up release is separated - Parameter 02 = 3)	4 K
29	H-GEN forced discharge	OFF no function1 Into DHW tank2 Into heating circuits3 Discharge in buffer tank	OFF
34*	Heating power limiting	50 ... 50 ... 100%	100%
35*	Hot water power limiting	50 ... 100%	100%
37	Operating hours counter	OFFAUTO1 feedback only2 free counter	AUTO
RESETST-1	Resetoper. hours / starts stage 1	SET	-
RESETST-2	Resetoper. hours / starts stage 2	SET	-

* Settings available depend up the type of intelligent boiler control or are preset according to the limit values of the boiler control system.
** CAUTION: Only boiler controls of the same type can be connected together.

RAISING RETURN TEMPERATURE Level

The parameters in this level refer to the special settings to increase the return temperature of heat generators. Enabling occurs only following activation in the HYDRAULIC level

Parameter	Designation Setting range / Setting values	Factory preset	Individual setting
01	Return flow limiting setpoint	10 ... 95 °C 20 °C
02	Switch-off differential	1 ... 20 K	2 K
03	Extended run time (pump)	0 ... 60 Min	1 Min

SOLAR Level (..VV..)

The parameters in this level refer to the special settings for solar energy application. Enabling occurs only following activation in the HYDRAULIC level.

Parameter	Designation Setting	range / Setting values	Factory preset	Individual setting
01	Switch-on differential	(Switch-off differential +3 K) ... 30 K	10 K
02 Switch-off differential	2 K ... (Switch-on differential -3 K)		5 K
03	Minimum run time of solar panel pump	0 ... 60 Min	3 Min
04	Maximum temperature limit of solar panel	70 ... 210 °C	120 °C
05	Maximum temperature limit solar buffer	20 ... 110 °C	75 °C
06	Solar operating	1 Priority mode2 parallel mode3 Priority mode DHW4 Priority mode buffer	2
07	Inhibition heat	OFF, 0,5 ... 24 h generator(Only in priority mode - Parameter 6 = 1, 3, 4)	OFF
08	Change priority/parallel mode	OFF, 1 ... 30 K(only in priority mode and act. cyclic block)	OFF
09	Solar energy	OFF No accounting1 Accounting flow calculation2 Accounting via pulse processing	OFF
RESET SOLAR	Reset solar energy balance	Reset: SET by pushing the rotary push-button (only if solar heat balance is enabled)	-
11	Volume flow	0,0 ... 30 l/Min or liter/impulse(only if solar heat balance is enabled)	0,0 l/Min
12	Fluid density	0,8 ... 1,2 kg/l(only if solar heat balance is enabled)	1,05 kg/l
13	Fluid heat	2,0 ... 5,0 KJ/kgK capacity(only if solar heat balance is enabled)	3,6 KJ/kgK
14 Final switch-off temperature OFF, 90... 210 °C			150°C
15 Test cycle solar load switch 1 ... 60 Min			10 Min
16	Switch-over temperature 20...110°C		75°C

SOLID FUEL Level (..VV..)

The parameters in this level refer to the special settings for solid fuel application. Enabling occurs only following activation in the HYDRAULIC level.

Parameter	Designation	Setting range / Setting values	Factory preset	Individual setting
01	Minimum temperature	20 ... 80 °C	60 °C
02	Maximum temperature	30 ... 100 °C	90 °C
03 Switch-on differential (Switch-off differential +3K) ... 20 K			10 K
04 Switch-off differential 2 K ... (Switch-on differential - 3K)			5 K
05 Inhibition heat generator OFF, 2...180 min			OFF

BUFFER Level (..VV..)

The parameters in this level refer to the special settings regarding buffer charging. Enabling occurs only following activation in the HYDRAULIC level.

Parameter	Designation Setting range / Setting values		Factory preset	Individual setting
01	Minimum temperature buffer 5 °C ... Maximum temperature buffer		20 °C
02	Maximum temperature buffer Minimum temperature buffer ... 95 °C		80 °C
03	Temperature excess H-GEN -10 ... 80 K 8 K
04	Switching differential 1 ... 70 K 2 K
05	Forced heat dissipation	OFF1 Into DHW tank2 Into heating circuits	OFF
06	Drain functionSwitch-on differential	(Switch-off differential + 2 K) ... 30 K 10 K
07	Drain functionSwitch-off differential	OFF (Switch-off differential + 2 K) ... 50 K	50 K
08	Buffer start-up protection	OFF no start-up protectionON start-up protection active	ON
09	Buffer discharge protection	OFF no discharge protectionON discharge protection active	ON
10	Buffer operating mode	1 Charging control (heating and DHW)2 Charging control (heating only)3 Discharging control (heating and DHW)4 Discharging control (heating only)5 Charging control (change over to DHW)6 Discharging control (to heat generator)	1
11	Buffer loading pump extended run time	0 ... 60 min.	0 Min.

SUMMATION FLOW CONTROL Level

Parameter	Designation Setting range / Setting values	Factory preset	Individual setting
01	P-band Xp SVLF-control	0,0 ... 50,0 %/K	5 %/K
02	Sample time Ta SVLF-control	1 ... 600 sec.	20 sec.
03	I-band Tn SVLF-control	1 ... 600 sec.	180 sec.

CASCADE CONTROL Level

The parameters in this level refer to cascaded heat generators and are only accessible in the first basic unit with data bus address 10.

This level is only available if several heat generators communicate with each other in a data bus connection.

Parameter	Designation Setting range / Setting values			Factory preset	Individual setting
01 Switching differential 6.0 ... 30 K				8 K
02 Switching on delay 0...200 min				0 Min
03 Switching off delay 0...60 min				0 Min
04	Sequential switch-over power stage sequence	10...100%		65%
05 Reverse boiler sequence OFF, 1 ... 250 h				OFF
06	Leading stage	1...n (stages)
07	Peak load boiler from adress...	OFF2...(max.stages) all heat generators in cascade numbered		OFF
08	Changeover basis power at group formation	OFF no changeover rON changeover		OFF
09	Hot water quick activation	OFF 1... max. number of increments		OFF

DATA BUS Level

The parameters in this level refer exclusively to the parameters related to the data bus and they control the access rights to each remote station.

Parameter	Designation Setting range / Setting values			Factory preset	Individual setting
01	Bus address basic unit 10, 20, 30, 40, 50			10
02	Bus access room unit HC	1	Advanced access (Owner status)	2
		2	Simple access (Tenant status)
03	Bus access room unit MC1	1	Advanced access (Owner status)	2
		2	Simple access (Tenant status)
04	Bus access room unit MC1	1	Advanced access (Owner status)	2
		2	Simple access (Tenant status)

RELAY TEST Level

This level allows the check off all relays the controller contains. The relays can be selected with the rotary push-button.

Parameter	Designation Setting range / Setting values		Factory preset	Individual setting
01 Heat generator test		Different relay sequence according to type of boiler (one or tow level)	OFF
02	Direct heating circuit pump test	OFF-ON-OFF -...	OFF
03 Mixing circuit pump 1 test		OFF-ON-OFF -...	OFF
04 Mixer actuator 1 test STOP-OPEN-STOP-CLOSE-STOP...			STOP
05	Mixing circuit pump 2 test	OFF-ON-OFF -...	OFF
06	Mixer actuator 2 test	STOP-OPEN-STOP-CLOSE-STOP...	STOP
07 DHW charging pump test OFF-ON-OFF -...			OFF
08 Variable output 1 test OFF-ON-OFF -...			OFF
09 Variable output 2 test OFF-ON-OFF -...			OFF

ALARM MESSAGE Level

In this level every alarm message that may appear is saved into a message memory stack (max. 20 values)

Parameter	Designation Setting range / Setting values	Factory preset	Individual setting
01 Alarm message #1 Last alarm message
02 Alarm message #2 Next to last alarm message
...	...	...
20	Alarm message #20 First alarm message

ALARM 2 Level (..C..)\*

In this level every alarm message that may appear is saved into a message memory stack (max. 20 values)

Parameter	Designation Setting range / Setting values		Factory preset	Individual setting
01 Alarm message #1 Last alarm message
02 Alarm message #2 Next to last alarm message
...	...	...
20	Alarm message #20 First alarm message

* only in connection with a H-GEN interface and SYSTEM-parameter 28=ON

SENSOR CALIBRATION Level

In this level all the sensors connected to the control unit can be corrected by ± 5 K compared to the factory calibration value.

Parameter	Designation Setting range / Setting values	Factory preset	Individual setting
02 Outdoor sensor - 5 K ... + 5 K
03 Heat generator sensor - 5 K ... + 5 K
04 Domestic hot water sensor - 5 K ... + 5 K
05 Flow sensor mixing circuit 1 - 5 K ... + 5 K
06 Flow sensor mixing circuit 2 - 5 K ... + 5 K
07 Solar panel sensor - 5 K ... + 5 K
08 Solar buffer sensor - 5 K ... + 5 K
09 Variable input 1 (VI 3) - 5 K ... + 5 K
10 Variable input 2 (VI 3) - 5 K ... + 5 K
11 Variable input 3 (VI 3) - 5 K ... + 5 K

Notes

Notes

Subject to change

Art. 0450017006 - 1130-33