STIEBEL ELTRON WPM COMMISSIONING Heat Pump Manager User Manual

COMMISSIONING
Heat pump manager
» WPM

General information

These instructions are intended for qualified contractors.
Not all features described in these instructions are available on every heat pump.
The latest version of these instructions can be found on our website.

1.1 Relevant documents

WPM operating instructions
Heat pump operating and installation instructions
Operating and installation instructions for system components
WPM system notification list
Installation instructions for heat pump cascade with WPM

Note
Please see device’s operating instructions for information on the “Guarantee” and “Environment and recycling”.

1.2 Safety instructions
1.2.1 Structure of safety instructions

KEYWORD Type of risk
Here, possible consequences are listed that may result from failure to observe the safety instructions.
Steps to prevent the risk are listed.

1.2.2 Symbols, type of risk

1.2.3 Keywords

death.
WARNING| Failure to observe this information may result in serious injury or death.
CAUTION| Failure to observe this information may result in non-serious or minor injury.

1.3 Other symbols in this documentation

Note
General information is identified by the adjacent symbol.
  Read these texts carefully.

pollution)
| Appliance disposal

This symbol indicates that you have to do something. The action you need to take is described step by step.
…„ „ These symbols show you the software menu level (in this example level 3).
1.4 Units of measurement
Note
All measurements are given in mm unless stated otherwise.

Safety

Only a qualified contractor should carry out installation, commissioning, maintenance and repair of the appliance.
2.1 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations and instructions.
2.2 General safety instructions
We guarantee trouble-free function and operational reliability only if original accessories and spare parts intended for the appliance are used.
2.3 Notes
– The appliance should only be operated once it is fully installed and all safety equipment has been fitted.
2.4 Test symbols
See type plate on the appliance.

Appliance description

The WPM heat pump manager is the main controller of the extendible WPM system. The device assists the control of one direct heating circuit and two heating circuits with mixer. Two heat pumps can be operated in a cascade. The device provides a 230 V fault contact for external pick-up of system faults. High efficiency circulation pumps can be connected directly via relay outputs or PWM outputs. The PCB of the WPM is located in a wall mounting enclosure that can also accommodate other components such as the relay for the top-hat rail. The entire system is operated via the integral programming unit with Touch- Wheel. An internet interface and Smart Home interfaces are available as options.

Cascade control
Up to 6 heat pump stages can be controlled for heat generation.
The maximum permitted configuration for cascade control is subject to the type of heat pump you are using.

• 6 single compressor heat pumps
• From the third connected heat pump upwards, a WPE heat pump extension must be used

Function overview

• The 4-wire data BUS enables rapid installation and system extension using the WPE heat pump extension
• Control of a second heat source for DHW and heating
• Demand-dependent control of different circulation pumps
•  Input of the system and heat pump frost limits
• At least 10 h power reserve for the clock
• Automatic pump kick control
• Reset option
• Stored notification list with precise fault code indication on the display, including date, time and heat pump index
•  Fast and precise fault diagnosis with a system analyser including temperature scanning of heat pumps and peripherals without additional equipment
• Default settings for time switch programs for all heating and DHW circuits

3.1 Accessories
The following accessories can be installed for additional control of the heat pump.
3.1.1 FE 7 remote control

The rotary selectors on the FE 7 remote control can be used to make the following settings:

•  Changing the set room temperature for heating circuit 1 by ± 5 °C
• Changing the operating mode

Note that the set room temperature can be changed only in adjustable operating modes.

Note
The remote control is only effective in the heat pump manager’s PROGRAMMED OPERATION mode.
You can set the temperature for heating times in PROGRAMMED OPERATION mode on the remote control.

3.1.2 FET remote control

The FET digital remote control enables one heating zone to be controlled. The remote control measures the relative humidity and room temperature.

3.1.3 Internet Service Gateway ISG

The Internet Service Gateway (ISG) is an Ethernet gateway in a wall mounting enclosure and is connected into the LAN (local area network).
The device enables the operation, adjustment and checking of heat pump system data via the browser of a computer, laptop or tablet in the local home network.
If the customer so wishes, data from the device can be transferred to our SERVICEWELT portal automatically over the internet.
3.1.4 WPE heat pump extension

The WPE heat pump extension supplements the WPM system withadditional functions. These additional functions can be adjusted on the programming unit of the WPM heat pump manager.

The WPE heat pump extension provides:

• Two additional heating circuits with mixer
• A swimming pool controller for primary and secondary integration of a swimming pool
• Two additional 0…10V interfaces
• Two differential controllers
• Switching outputs

The WPE heat pump extension:

• Allows cascades of up to six heat pumps
• Supplements the basic functions of the WPM heat pump manager with options for connecting a building management system

3.1.5 EASYTRON Connect

The EASYTRON Connect system is designed for individual room control of heating systems in buildings. The system can be connected to a heat pump via ISG web or operated independently. Connecting the system to a heat pump enables demand-dependent individual room control. Operation can be via the EASYTRON Connect app.

If the system has an integral heat pump, the following functions are possible:

• The system can optimise heat pump heating curves for the connected heating circuits.
•  The system can open all heating circuits for heat pump defrost.
•  The system enables the identification of rooms to be cooled by the heat pump.

The system can be used for heating systems with wall mounted radiators or underfloor heating. If the heating system has an integral DHW cylinder, the system can influence DHW heating.
The system can control 24 rooms. In each room, max. four actuators for radiators or channels for underfloor heating can be controlled.
In conjunction with a control unit for underfloor heating, one room temperature sensor is required per room.

Appliance compatibility

Note
Some heat pumps should not be connected directly to the heat pump manager.

• With these heat pumps, use an indoor unit in which the heat pump manager is factory-fitted.
• Observe the information in the heat pump documentation.

Connecting external components

WARNING Electrocution Carry out all electrical connection and installation work in accordance with national and regional regulations.
WARNING Electrocution
  Isolate the heat pump from the power supply when carrying out any work.
WARNING Electrocution
Only components that operate with safety extra low voltage (SELV) and that ensure secure separation from the mains voltage supply may be connected to the low voltage terminals of the appliance. Connecting other components can make parts of the appliance
and connected components live.
Only use components which have been approved by us.

Note
In conjunction with the WPM heat pump manager, use the HSM mixer servomotor.

5.1 Sensor installation

Connect all of the required sensors before commissioning the appliance.

5.1.1 AF PT outside temperature sensor
The temperature sensors have a significant influence on the function of your heating system. Therefore ensure sensors are correctly positioned and well insulated.
Install the outside temperature sensor on a north or north-eastern wall. Minimum clearances: 2.5 m above the ground, and 1 m to the side of windows and doors. The outside temperature sensor should be freely exposed to the elements but not placed in direct sunlight. Never mount the outside temperature sensor above windows, doors or air ducts.

Installation:

• Pierce the cable grommet at the appropriate place using a pointed object.
•  Insert the cable grommet into the recess on the sensor retainer.
•  Pass a lead through the cable grommet.
• Connect the lead to the terminal.
• Tighten the screws on the terminal.
• Connect the connecting cable to sensor terminal X1.3.
• Press the sensor retainer into the sensor enclosure until it clicks audibly into place.
•  Secure the sensor enclosure to the wall using a screw and rawl plug.

5.1.2 TAF PT immersion/contact sensor
Installation as contact sensor

• Clean the pipe.

Note
The recesses on the retaining clip are of different sizes.

• Press the smaller recess on the retaining clip into one of the notches on the sensor.
• Press the larger recess of the retaining clip onto the sensor.
• Apply heat conducting paste to the sensor.
• Secure the sensor with the retaining clip and the cable tie.

Installation as an immersion sensor

The immersion sensor is required for the sensor well in the buffer cylinder.

• Press the spring downwards. The spring is used for fixing the sensor in the sensor well.
• Apply heat conducting paste to the sensor.
•  Push the sensor into the sensor well.

5.1.3 Sensor resistance values

5.2 FE7 remote control

Note
If you are connecting an FE 7 remote control, you cannot use an FET remote control.

FE7 connection array

With the FE7 remote control you can adjust the set room temperature for heating circuit 1 by ± 5 °C. This function is enabled only in PROGRAMMED OPERATION. You can also change the operating mode.

  Connect the remote control to terminal X1.13.

5.3 FET remote control

Note
If you are connecting one or multiple FET remote controls, you cannot use an FE 7 remote control.

FET connection array

The FET digital remote control enables convenient operation of one heating zone.

• Attach the remote control to one of the CAN B terminals.
• Observe the FET operating instructions.

5.4 Internet Service Gateway ISG
The Internet Service Gateway ISG enables you to operate the heat pump within your local home network and via the internet when you are away.

• Attach the Internet Service Gateway to one of the CAN B terminals (not one marked “+”).
• Observe the ISG operating instructions.

The ISG is not supplied with power by the heat pump.

Commissioning

Only qualified contractors may carry out any adjustments to the heat pump manager (see list in the chapter “Settings / Setting parameters” in the heat pump manager commissioning instructions), commission the device and instruct the system user in its use. Commissioning must be carried out in accordance with these installation instructions and the operating and installation instructions of all components belonging to the heat pump system.

Note
Our customer support can assist with commissioning, which is a chargeable service.

6.1 Bus initialisation
Connecting the bus cable not only establishes the electrical connection for system communication. As part of commissioning, connecting the bus cable will also assign the appliance-specific address required for switching the heat pump.

6.1.1 General information
Note
The control panel for each heat pump provides space for the connection of two 3-core BUS cables, i.e. the BUS cable between the heat pumps is wired in parallel.
Note
In a cascade, heat pumps designed to heat DHW must always be initialised first. The remaining heat pumps can then be initialised in any order.
Note
All necessary sensors must be connected before the voltage is connected to the WPM. Any sensors connected later will not be recognised by the WPM. Example: No DHW parameters, programs or temperatures are displayed if the DHW cylinder sensor was not connected at the time of commissioning. No values can be programmed for these parameters.
Note
If incorrectly initialised, all IWS (internal heat pump controllers) must be reset and reinitialised (see chapter “Reset options / Reinitialising the IWS”).
Note
The entire heat pump system will be shut down if the BUS cable between the WPM and the heat pump is interrupted.
Note
The connection between heat pump manager and heat pump is carried out via CAN bus. The connection can have a line or star topology.
If you want to initialise a heat pump cascade, refer to the document “Installation instructions for heat pump cascade with WPM”. You can find this document in the download area of the WPM on our website.

6.1.2 Sequence when activating the heat pumps for bus initialisation

Requirement: The appliances (heat pump, heat pump manager (WPM) and, where applicable, heat pump extension (WPE)) are connected to each other via the bus.

For bus initialisation, it is essential that you comply with the following sequence:

Connect the WPM to the mains voltage.

• Connect the WPE (if installed) to the mains voltage.
• Connect the internal heat pump controller (IWS) to the mains voltage.
• Leave the mains voltage to the compressor and emergency/booster heater switched off, so that the heat pump does not start up uncontrolled during initialisation.

In the DIAGNOSIS/SYSTEM menu, all connected BUS subscribers and their respective software versions are shown under BUS SUBSCRIBER.
After completing initialisation of the heat pump, use the DIAGNOSIS / SYSTEM menu under HEAT PUMP TYPES to check that all connected heat pumps are being displayed.
▶If not all bus subscribers or connected heat pumps are displayed, you will need to reinitialise the IWS (see chapter “Reset options”).

6.2 System configuration through parameter settings
If the system is operating incorrectly, you should first check the parameter settings (see chapter “Settings / Parameter summary”).
6.3 Reset options
6.3.1 Reinitialising the IWS
If commissioning or initialisation of the system failed (not all bus subscribers or connected heat pumps were displayed), carry out this reset.
To do so, proceed as follows:

• Switch OFF the mains voltage to the WPM.

• Switch OFF the mains voltage to the WPE (if installed).

• Switch OFF the mains voltage to the heat pump.

• Disconnect the BUS connections.

• Switch ON the mains voltage to the heat pump.

• Hold the reset key until the two outer LEDs are constantly illuminated.

• Release the reset key. The IWS has now been reset and is ready for renewed initialisation.
  

• Switch off the mains power supply to the heat pump.

• Disconnect the bus connections.

• Switch the mains power supply (to the heat pump, WPM, WPE) back on.

• Carry out BUS initialisation (see chapter “Commissioning /BUS initialisation”).

• Reset the system-specific parameters for the WPM and WPE.

6.3.2 Heat pump reset

This reset should be performed if a heat pump-specific fault or hardware fault occurs five times in the space of two hours’ runtime.

▶Activate the HEAT PUMP RESET parameter in the COMMISSIONING menu.

The fault is cleared. The heat pump is ready to be returned to use.

Commissioning wizard

The device has a commissioning wizard that will take you throughthe most important settings the first time it is started.
▶Follow the instructions on the display.

Menu

Note
Not all appliance parameters and values are displayed in the different menus; it depends which heat pump type and accessories are connected.
Note
Certain menu items are protected by a code. The factory-set code is 1000.
Note
The menu items shown in grey are visible only if the WPE heat pump extension is connected.

8.1 Menu structure

INFO

SYSTEM
HEAT PUMP
ENERGY FOOTPRINT
DIAGNOSIS

SYSTEM STATUS
HEAT PUMP STATUS
HEAT PUMP ANALYSIS
SYSTEM
INTERNAL CALCULATION
NOTIFICATIONLIST
RELAY TEST SYSTEM
RELAY TEST HEAT PUMP

PROGRAMS

HEATING PROGRAM
DHW PROGRAM
COOLING PROGRAM
PARTY PROGRAM
HOLIDAY PROGRAM
HEAT-UP PROGRAM
PASTEURISATION PROGRAM
DHW CIRCULATION PROGRAM
SWIMMING POOL PROGRAM
SILENT PROGRAM 1
SILENT PROGRAM 2

SETTINGS

VIEW
GENERAL
FAVOURITES
HEATING
DHW
HYBRID MODULE
COOLING
SWIMMING POOL
DIFFERENTIAL CONTROLLER 1
DIFFERENTIAL CONTROLLER 2
THERMOSTAT FUNCTION 1
THERMOSTAT FUNCTION 2

COMMISSIONING

SOURCE
HEATING
DHW
COMPRESSOR
SILENT MODE
I/O CONFIGURATION
EMERGENCY OPERATION
RESET

8.2 Menu description

INFO

In the INFO menu you can check set and actual values for temperatures, flow rates and pressures in the heating system and heat pump.
In the INFO menu you can check set and actual values for temperatures, flow rates and pressures in the heating system and heat pump.
Note
Please note that actual and set values can only be displayed if the appropriate sensors are connected.

SYSTEM

… …  ROOM TEMPERATURE|
---|---
FE7|
ACTUAL TEMPERATURE FE7
Actual room temperature for heating circuit 1 (HK1) (displayed only if FE 7 remote control is connected)| °C
SET TEMPERATURE FE7
Set room temperature for heating circuit 1 (HK1) (displayed only if FE 7 remote controlis connected)| °C
FET 1|
ACTUAL TEMPERATURE FET 1
Actual room temperature for the allocated heating circuit (displayed only if FET remote  controlis connected)| °C
SET TEMPERATURE FET 1
Set room temperature for the allocated heating circuit (displayed only if FET remote control is connected)| °C
RELATIVE HUMIDITY FET 1| %
DEW POINT TEMPERATURE FET 1
Dew point temperature (displayed only if FET remote control is connected)| °C
FET 2|
ACTUAL TEMPERATURE FET 2
Actual room temperature for the allocated heating circuit (displayed only if FET remote control is connected)| °C
SET TEMPERATURE FET 2
Set room temperature for the allocated heating circuit (displayed only if FET remote control is connected)| °C
RELATIVE HUMIDITY FET 2| %
DEW POINT TEMPERATURE FET 2
Dew point temperature (displayed only if FET remote control is connected)| °C
FET 3|
ACTUAL TEMPERATURE FET 3
Actual room temperature for the allocated heating circuit (displayed only if FET remote control is connected)| °C
SET TEMPERATURE FET 3
Set room temperature for the allocated heating circuit
(displayed only if FET remote control is connected)| °C
RELATIVE HUMIDITY FET 3| %

DEW POINT TEMPERATURE FET 3
Dew point temperature (displayed only if FET remote control is connected)C1875:D1881C1897C1875:D1884C1875:D1884C1897CC1875:C1884| °C
---|---
FET 4| %
ACTUAL TEMPERATURE FET 4
Actual room temperature for the allocated heating circuit (displayed only if FET remote control is connected)| °C
SET TEMPERATURE FET 4
Set room temperature for the allocated heating circuit (displayed only if FET remote control is connected)| °C
RELATIVE HUMIDITY FET 4| %
DEW POINT TEMPERATURE FET 4
Dew point temperature (displayed only if FET remote control is connected)| °C
FET 5|
ACTUAL TEMPERATURE FET 5
Actual room temperature for the allocated heating circuit (displayed only if FET remote control is connected)| °C
SET TEMPERATURE FET 5
Set room temperature for the allocated heating circuit (displayed only if FET remote control is connected)| °C
RELATIVE HUMIDITY FET 5| %
DEW POINT TEMPERATURE FET 5
Dew point temperature (displayed only if FET remote control is connected)| °C
… …  HEATING|
OUTSIDE TEMPERATURE| °C
ACTUAL TEMPERATURE HK 1
Actual heating circuit temperature, heating circuit 1| °C
SET TEMPERATURE HK 1
Set heating circuit temperature, heating circuit 1 (HK1).
With fixed value control, the fixed temperature is displayed.| °C
ACTUAL TEMPERATURE HK 2
Actual heating circuit temperature, heating circuit 2| °C
SET TEMPERATURE HK 2
Set heating circuit temperature, heating circuit 2 (HK2).
With fixed value control, the fixed temperature is displayed.| °C
ACTUAL TEMPERATURE HK 3
Actual heating circuit temperature, heating circuit 3| °C
SET TEMPERATURE HK 3
Set heating circuit temperature, heating circuit 3 (HK3).
With fixed value control, the fixed temperature is displayed.| °C
ACTUAL TEMPERATURE HK 4
Actual heating circuit temperature, heating circuit 4| °C
SET TEMPERATURE HK 4
Set heating circuit temperature, heating circuit 4 (HK4).
With fixed value control, the fixed temperature is displayed.| °C
ACTUAL TEMPERATURE HK 5
Actual heating circuit temperature, heating circuit 5| °C
SET TEMPERATURE HK 5
Set heating circuit temperature, heating circuit 5 (HK5).
With fixed value control, the fixed temperature is displayed.| °C

… …  DHW|
---|---
ACTUAL TEMPERATURE Actual DHW temperature| °C
SET TEMPERATURE Set DHW temperature| °C
FLOW RATE| l/min
… …  HYBRID MODULE|
ACTUAL TEMPERATURE 2ND HEAT GENERATOR| °C
SET TEMPERATURE 2ND HEAT GENERATOR| °C
ACTUAL MIXER TEMPERATURE 2ND HEAT GENERATOR| °C
SET MIXER TEMPERATURE 2ND HEAT GENERATOR| °C

COOLING

EXTERNAL HEAT SOURCE

ELECTRIC REHEATING

SOURCE

DHW CIRCULATION

SWIMMING POOL

DIFFERENTIAL CONTROLLER 1

DIFFERENTIAL CONTROLLER 2

THERMOSTAT FUNCTION 1

THERMOSTAT FUNCTION 2

HEAT PUMP

Notice
The values displayed for heat amount, power consumption, electricity consumption and efficiency are based on measured correlations that are specific to each type. The displayed values are not suitable for billing purposes, for example. Additional consumption may be caused by components which are installed outside the appliance.
The displayed values are primarily used for comparing different periods of use in order to demonstrate trends in a specific system. The displayed values are greatly influenced by factors such as the building, the installation location, the installation and the environmental conditions prevailing during the period of analysis.
For technical reasons, some of the displayed values may be considerably inaccurate.

PROCESS DATA

AMOUNT OF HEAT

POWER CONSUMPTION

RUNTIME

STARTS

ENERGY FOOTPRINT

**** Notice The values displayed for heat amount, power consumption, electricity consumption and efficiency are based on measured correlations that are specific to each type. The displayed values are not suitable for billing purposes, for example.
Additional consumption may be caused by components which are installed outside the appliance. The displayed values are primarily used for comparing different periods of use in order to demonstrate trends in a specific system. The displayed values are greatly influenced by factors such as the building, the installation location, the installation and the environmental conditions prevailing during the period of analysis.
For technical reasons, some of the displayed values may be considerably inaccurate.

In this menu, you will find values for electricity consumption, the amount of heat delivered and efficiency. The displayed values are calculated on a rolling basis. The period covered is specified.
h Hour
M Month

ENTIRE SYSTEM

POWER CONSUMPTION

EFFICIENCY

DIAGNOSIS
For heating system and heat pump troubleshooting and analysis, you can call up all important process data and BUS subscribers under DIAGNOSIS and carry out a relay test.

SYSTEM STATUS

HEAT PUMP STATUS

HEAT PUMP ANALYSIS

SYSTEM

INTERNAL CALCULATION

NOTIFICATIONLIST

RELAY TEST SYSTEM

• The outputs are converted if an HMH or second heat generator are used.

RELAY TEST HEAT PUMP

PROGRAMS
Here you can set all the times for the different programs and start the heat- up program.

Setting pairs of switching times
In most programs, you can set three pairs of switching times per day or block of days. The switching time pairs are shown on the display, to the right of the clock. Each switching time pair consists of a start time and an end time. After a  switching time pair has expired, the heat pump switches to the operating mode applicable at the time.

Periods around midnight
Switching time pairs can be programmed only up to 24:00. If you want to choose periods that extend beyond midnight, you will need to set an additional switching time pair for the following day.

Deleting switching time pairs
By resetting the start time to “–:–“, the associated end time is automatically reset.

HEATING PROGRAM

DHW PROGRAM

COOLING PROGRAM
PARTY PROGRAM

HOURS

HOLIDAY PROGRAM

HEAT-UP PROGRAM

PASTEURISATION PROGRAM

DHW CIRCULATION PROGRAM
SWIMMING POOL PROGRAM
SILENT PROGRAM 1
SILENT PROGRAM 2

Menu: PROgRAMS

HEATING PROGRAM
Select HEATING PROGRAM to determine the times during which rooms should be heated to the set comfort value. In the periods in between, heating takes place to the set ECO value. The times are determined individually for each available heating circuit.

Note
You can set the set values for each heating circuit under SETTINGS / HEATING / HEATING CIRCUIT / COMFORT TEMPERATURE and ECO TEMPERATURE.

DHW PROGRAM
Select DHW PROGRAM to determine the times during which DHW should be heated to the set comfort value. In the periods in between, DHW is heated to the set ECO value.

Note
You can adjust the set values under SETTINGS / DHW / DHW TEMPERATURES / COMFORT TEMPERATURE or ECO TEMPERATURE.

COOLING PROGRAM
Use the COOLING PROGRAM menu item to select the times during which cooling to the SET ROOM TEMPERATURE should take place.
In the periods in between, no cooling occurs. The times are determined individually for the available cooling circuits.

Note
You can select the set values for the relevant cooling circuit under menu item SETTINGS / COOLING / COOLING CIRCUIT / SET ROOM TEMPERATURE.

PARTY PROGRAM

Note
In the start display, party mode is not displayed.

Select PARTY PROGRAM, to extend by a few hours the period in which the heat pump provides room heating to comfort temperature. After the period has expired, the heat pump switches to the operating mode applicable at the time.

Note
You can adjust the set values under SETTINGS / HEATING / HEATING CIRCUIT / COMFORT TEMPERATURE or ECO TEMPERATURE.

HOLIDAY PROGRAM
In the holiday program, the heat pump provides room heating up to the ECO temperature for a freely adjustable period. The set room temperature is reduced to the ECO temperature. Frost protection for DHW heating remains active.  After the period has expired, the heat pump switches to the operating mode applicable at the time.

The start day of the holiday period begins at 00:00. The final day of the holiday period ends at 24:00.
The program can be terminated before the end of the set time period by changing the operating mode to COMFORT MODE or PROGRAMMED OPERATION.

„ … HEAT-UP PROGRAM

Use the heat-up program to dry your screed with a defined temperature profile. To prevent damage to the appliance and/or the  installation, observe the following:

• Perform hydronic balancing of the underfloor heating system.
• Open all lines of the underfloor heating system.

The heating output required for the floor heating program may exceed the design output of the heat pump. As a result, it may not be possible to achieve the required flow temperature with the heat pump. For problem-free heating/screed  drying, therefore, we recommend using an external mobile electric heating appliance.

If screed drying with the heat pump, you will need to activate the electric emergency/booster heater.

During the period that the heat-up program is  enabled, the EMERGENCY OPERATION mode is not available.
Heating occurs over a definable period to an adjustable temperature sequence. After a heat-up program has finished,  the heat pump switches to the last operating mode selected.

Note

During the period that the heat-up program is enabled, the heat pump will reach maximum output more frequently. The energy demand and noise level will be  higher than in normal operation.

Material losses
Incorrect settings can cause damage to the heat pump or screed. With ground source heat pumps, the heat source can also be damaged.

• Please note the differences between air source heat pumps and ground source heat pumps described below.

Air source heat pumps
By operating at the output limit, the evaporator can defrost frequently due to the high cooling capacity. If the heating system has not been hydronically balanced or if not all heating lines are open, defrosting faults can occur at heating circuit temperatures below 25 °C. This is due to protective functions which are intended to prevent the condenser from freezing.

Ice can form on the fan and air ducts even at temperatures above the freezing point, which can lead to noise or, in extreme cases, to the fan becoming blocked.

• If the fan is blocked, adjust the LOWER APP LIMIT HZG to a value above the current outside temperature.
• For heat pumps with output-dependent control, limit the heating output of the heat pump in menu “SETTINGS / SILENT MODE / OUTPUT REDUCTION / OUTPUT” to 75 %.
• Once the ice has melted, set parameter LOWER APP LIMIT HZG back to its initial value.
• Set the heating output of the heat pump in menu “SETTINGS / SILENT MODE / OUTPUT REDUCTION / OUTPUT” back to its initial value.

Ground source heat pumps

If screed drying is carried out with a ground source heat pump, theheat source can be overloaded, especially a geothermal probe. Theground around the geothermal probe may freeze in the process.Heat transfer to the ground will be irreparably damaged.
Screed drying with a geothermal probe:
Note
If screed drying with a geothermal probe, obtain an approval from the manufacturer of the geothermal probe.

• Set the minimum source temperature to > 2 °C (see parameter MIN SOURCE TEMPERATURE in menu COMMISSIONING / SOURCE).
•  Set the temperature spread on the heat source side to < 3 K via the flow rate (see parameter BRINE PUMP RATE in menu COMMISSIONING / SOURCE).

In some circumstances, screed drying may take longer than anticipated or may not be completed.
Screed drying with a geothermal collector:
If screed drying with a geothermal collector before the heating season, screed drying must be completed by the end of August at the latest. Otherwise the geothermal collector may not regenerate in time for the heating season.
**HEATING CIRCUIT SELECTION**

Select HEATING CIRCUIT SELECTION to select the heating circuit required for the heat-up program.
In the heat pump manager, heating circuit 1 and heating circuits 2 and 3 can be selected. If the WPE heat pump extension is installed in the system, heating circuit 1 or heating circuits 2 to 5 can be selected.
When heating circuits 2 to 3 or 2 to 5 are in operation, the mixer regulates the flow temperature in the selected heating circuit to the set values.
If only the direct heating circuit 1 is operational, the set values are reduced by 5 K to even out temperature differences in the buffer cylinder.
If the system is operated without a buffer cylinder, a distinction must be drawn between inverter heat pumps and on/off heat pumps.
Inverter heat pumps without buffer cylinder
The internal sensor on the heat pump controls the heating circuit temperature by balancing the flow and return temperature. A sensor must not be connected to the heat pump manager for this purpose. Buffer charging pump 1 acts as heating circuit pump 1.
The heat pump extension has no function here.
On/off heat pumps without buffer cylinder
Only heating circuit 1 can be selected for the heat-up program.
Heating circuit sensor 1 must be connected to the heat pump.
Buffer charging pump 1 acts as heating circuit pump 1.
The heat pump extension has no function here.

SETTINGS

Material losses

Incorrect settings can cause damage to the heat pump or screed. The temperatures and time periods must be specified by the screed contractor responsible.

• Ask the screed contractor responsible for the details required.

Y Temperature
X Time
1 Maximum temperature (MAXIMUM TEMPERATURE)
2 Low end temperature (LOW END TEMPERATURE)
3 Duration of low end temperature (DURATION BASE TEMP)
4 Rise K/day (RISE PER DAY)
5 Duration of maximum temperature (MAX TEMPERATURE DURATION)
6 Start
7 End
Note
On expiry of the period over which the screed is heated to maximum temperature, the temperature is reduced in equal steps to the low end temperature.

Six parameters are available to determine the temperatures and periods for the heat-up program. These parameters can be adjusted sequentially as soon as the heat-up program is activated.

• Set the program to ON using the Touch-Wheel. Confirm the selection with OK.
• Use the Touch-Wheel to select the parameter you want to set. Confirm the selection with OK.
• Use the Touch-Wheel to set the desired value. Confirm the selection with OK.
• Adjust the other parameters in the same way.

LOW END TEMPERATURE
Here you can set the temperature to which the screed is initially heated.
DURATION BASE TEMP
Here you can set how long the LOW END TEMPERATURE is maintained.
MAXIMUM TEMPERATURE
Here you can set the maximum temperature to which the screed is heated.
MAX TEMPERATURE DURATION
Here you can set how long the MAXIMUM TEMPERATURE is maintained.
RISE PER DAY
Here you can set by how many degrees Kelvin/day the temperature rises before the MAXIMUM TEMPERATURE is reached.
**** PASTEURISATION PROGRAM

Note
For the PASTEURISATION PROGRAM, an emergency/ booster heater or external heat source must be connected.
In menu item PASTEURISATION PROGRAM, you can specify the days and times at which the DHW cylinder heats the content to the highest value.
START TIME
Here you can specify the start time at which the DHW cylinder heats the content to the highest value.
DAYS
Here you can set the days on which the DHW cylinder heats the content to the highest value.
** DHW CIRCULATION PROGRAM
Select DHW CIRCULATION PROGRAM to determine the times during which the DHW circulation pump is controlled according to the time program.
SWIMMING POOL PROGRAM
Select SWIMMING POOL PROGRAM to determine the times during which swimming pool water heating should take place. Outside those times, the swimming pool water heating will be switched off.
Note
You can adjust the set value under SETTINGS / SWIMMINGPOOL / SET TEMPERATURE.
**SILENT PROGRAM 1
Select SILENT PROGRAM 1 to determine the times during which the heat pump is offset to a reduced noise mode.
By reducing the fan speed, the noise level of the heat pump is reduced. On certain heat pumps, the compressor power may also be reduced.
SILENT PROGRAM 2
Note
When SILENT PROGRAM 2 is enabled, operating costs will be higher.
Select SILENT PROGRAM 2 to determine the times during which the heat pump is switched off. The internal emergency/booster heater or external heat source takes over the heating and DHW heating operations.
„SETTINGS
Here, in addition to the general settings (e.g. time), you can set all of the system-specific parameters for heating, cooling and DHW modes.

**** VIEW
In this menu item, you can determine what faults are displayed in the message list. Depending on the code entered, the message list will display faults relevant either to the qualified contractor or to the service department. If no code is entered, only faults relevant to the device user are displayed in the message list. Entering the code will also unlock the code-protected parameters for a specified period.

GENERAL
TIME / DATE
Select TIME / DATE to set the current time, year, month and day.
SET SUMMER TIME
Select SET SUMMER TIME, to set the summer time dates.
Summertime is factory-set to begin on 25 March and to end on 25 October.
DAY BEGINNING
Set the beginning of summer time here.
DAY ENDING
Set the end of summer time here.
**LANGUAGE
Select LANGUAGE to change the system language.
CONTRAST
Select CONTRAST to adjust the display contrast.
****BRIGHTNESS
Select BRIGHTNESS to adjust the display brightness.
TOUCH SENSITIVITY
Select TOUCH SENSITIVITY to adjust the touch sensitivity of the Touch-Wheel and the sensor keys.
TOUCH ACCELERATION
Select TOUCH ACCELERATION to adjust the speed of reaction of the Touch-Wheel and the sensor keys.
FAVOURITES
Select FAVOURITES to select up to six temperatures that will be displayed in the main display. These temperatures will be displayed sequentially in groups of three.
****HEATING
**HEATING CIRCUIT 1 | HEATING CIRCUIT 2 | HEATING CIRCUIT 3 | HEATING CIRCUIT 4 | HEATING CIRCUIT 5 With all heating circuit menu items, you can specify the parameters independently of one another.
Note If the WPE heat pump extension is connected, you can specify separate values for heating circuit 4 and heating circuit 5.
COMFORT TEMPERATURE
Select COMFORT TEMPERATURE to set the set room temperature for comfort mode. When the heat pump is in comfort mode (see PROGRAMS / HEATING PROGRAM or operating mode COMFORT MODE), the heat pump heats the heating water to the value set here.
ECO TEMPERATURE
Select ECO TEMPERATURE to set the set room temperature for ECOmode. When the heat pump is in ECO mode (see PROGRAMS / HEATING PROGRAM or operating mode ECO MODE), the heat pumpheats the heating water to the value set here.
  MINIMUM TEMPERATURE
The set MINIMUM TEMPERATURE is safeguarded by the controller of the relevant heating circuit.
The minimum temperature ensures, with underfloor heating for example, that the screed/substrate is never too cold.
MAXIMUM TEMPERATURE
The set MAXIMUM TEMPERATURE limits the permissible flow temperature in heating circuit 2. The limit has priority over a higher set flow temperature calculatedby the heat pump manager.
  MIXER DYNAMICS
Using this value, the control characteristics or the effect of mixer runtime on the controller can be adjusted.

ROOM INFLUENCE

Only in conjunction with a remote control.
In this menu item you set the degree of influence that the outside temperature or current room temperature has on the control unit.
With weather-compensated control, the room is heated in relation to the outside temperature and the set heating curve.
With room temperature-dependent control, the room is heated consistently to the temperature set on the remote control.

Heating circuit pump control with remote control

• Set the ROOM INFLUENCE to a value greater than 0.
  If the actual room temperature is higher than the set room temperature plus 1 K, the heating circuit pump is switched off. If the actual room temperature is lower than the set room temperature, the heating circuit pump is switched on.

HEATING CURVE RISE
Menu item HEATING CURVE RISE enables you to set one heating curve each for heating circuits 1, 2 and 3. If a heat pump extension is connected, this also applies to heating circuits 4 and 5.

Recommendation:

Heating circuit| Heating curve rise Area heating| Radiator heatingsystem| Set room temperature
---|---|---|---
1| 0.4| 1.1| 20 °C
2| 0.6| 0.9| 20 °C
3| 0.6| 0.9| 20 °C
4| 0.6| 0.9| 20 °C
5| 0.6| 0.9| 20 °C

If you select a temperature in the SETTINGS / HEATING / STANDARD SETTING under the parameter FIXED VALUE OPERATION menu, heating curve 1 is not displayed. The display will show SET FIXED TEMPERATURE with the relevant temperature.

X Outside temperature [°C] Y Heating circuit 1, heat pump return temperature [°C] Heating circuit 2, heat pump flow temperature [°C] HEATING CURVE VIEW
The graphic that appears on the display shows the current heating curves for the comfort and ECO modes.

X Outside temperature [°C] Y Return / flow temperature [°C] 1 Comfort mode
2 ECO mode
Adapting a heating curve
Example: During spring and autumn, at outside temperatures of between +5 °C and +15 °C, the room temperature is too low even with the radiator valves fully open. At an outside temperature of approx. 0 °C, the set room temperature will be achieved. The heating curve is set to 1.0, relating to a room temperature of 20 °C. With a parallel shift of the heating curve accompanied by a reduction of the curve, the heating performance of the system is corrected. The dotted line shows the heating curve reduced to 0.83 and the set room temperature of 23.2 °C, increased by 3.2 °C.

X Outside temperature [°C] Y Return / flow temperature [°C]

STANDARD SETTING
BUFFER OPERATION
This parameter is used to determine the basic system configuration and thus the overall behaviour of the system.
If a buffer cylinder is used:

• Set the parameter to ON. Confirm the selection with OK. The buffer charging pump is also actuated with the compressor.
  After a delay, the compressor is started.
  If no buffer cylinder is used:

• Connect the heating circuit pump to the X2.6 connection.

• Set the parameter to OFF. Confirm the selection with OK. The heating circuit pump runs continuously.

Note
An incorrect setting can lead to malfunctions.
SUMMER MODE
SUMMER MODE

With this parameter, automatic shutdown of heating mode can be activated in summer.
With a building insulation value of 0 (see parameter BUILDING HEAT BUFFER): If the current outside temperature exceeds the set outside temperature (see parameter OUTSIDE TEMPERATURE), the system switches to summer mode. If the current outside temperature falls below the set outside temperature, the system switches to heating mode.
With a building insulation value of 1-3 (see parameter BUILDING HEAT BUFFER): If the outside temperature averaged over a specified period exceeds the set outside temperature (see parameter OUTSIDE TEMPERATURE), the system switches to summer mode. If the outside temperature averaged over a specified period falls below the set outside temperature, the system switches to heating mode.
When the parameter FIXED VALUE OPERATION is enabled, summer mode is deactivated for heating circuit 1. Heating circuits 2-5 are not affected by this.

OUTSIDE TEMPERATURE

• Using the Touch-Wheel, set the temperature at which the system should switch on or off.

BUILDING HEAT BUFFER

Select BUILDING HEAT BUFFER to specify the type of building with regard to insulation and heat loss. Changeover to and from summer mode is quicker or slower depending on the building type.

– Setting “0” = uninsulated
The outside temperature is compared directly with the set temperature trigger point.
– Setting “1” = light insulation
Outside temperature is captured over a 24 hour period. An average is calculated from the data.
Typically: Wood construction with rapid heat transfer and little or no thermal insulation.
– Setting “2” = medium insulation
Outside temperature is captured over a 48 hour period. An average is calculated from the data.
Typically: Brick construction with thermal insulation and average heat transfer.
– Setting “3” = heavy insulation
The outside temperature is captured over a 72 hour period.
An average is calculated from the data.
Typically: Building with very slow heat transfer, e.g. very thick brick walls.

If the calculated outside temperature ≥ the set outside temperature, all heating circuits will switch to summer mode. Summer mode relates solely to the central heating function. With fixed value control, summer mode is disabled for heating circuit 1. Summer mode remains active for all other heating circuits. Changing the set temperature on remote controls will have no effect. The system will continue to run in summer mode.

FLOW PROP HEATING CIRC

Note
The control characteristics cannot be defined for heating circuits with mixer and operation with buffer cylinders.
Select FLOW PROP HEATING CIRC to specify the temperature measurements on which the control characteristics of the system are based.
Control characteristics can be based on the return temperature, the flow temperature or on a specified combination of the two temperatures. The relationship between flow and return temperature can be set in any proportions.
Example:

MAXIMUM RETURN TEMP
Select MAXIMUM RETURN TEMP to specify the temperature at which the heat pump switches off in heating mode. This defines when the heat pump is switched off for safety reasons, based on the return temperature. In DHW mode the return temperature is not scanned.

The idle time is specified in the parameter IDLE TIME (in the COMMISSIONING /COMPRESSOR menu).
No fault message is shown on the display when this value is reached.
MAXIMUM FLOW TEMPERATURE
Select MAXIMUM FLOW TEMPERATURE to specify the temperature at which the heat pump switches off in heating mode. This defines when the heat pump is switched off for safety reasons, based on the flow temperature.
The idle time is specified in the parameter IDLE TIME (in the COMMISSIONING / COMPRESSOR menu). No fault message is shown on the display when this value is reached.
FIXED VALUE OPERATION

Note
If fixed value operation is active, cooling mode is not possible.

On/off heat pumps
In menu item FIXED VALUE OPERATION, you can specify the temperature to which the set heating circuit temperature should be constantly regulated. The outside temperature, set program times and summer mode do not affect this.
Fixed value operation relates solely to the control characteristics of heating circuit 1.
It is used, for example, on systems in which a constant flow temperature is required, such as air heating systems.
Inverter heat pumps
In menu item FIXED VALUE OPERATION, you can specify the temperature to which the set heating circuit temperature should be regulated with selected flow proportion. The outside temperature, set program times and summer mode do not affect this.
Fixed value operation relates solely to the control characteristics of heating circuit 1.
For inverter heat pumps, it is possible to set the output for fixed value operation in the menu COMMISSIONING / COMPRESSOR / CONSTANT OUTPUT.
It is used, for example, on systems in which a constant flow temperature is required, such as air heating systems.

HEATING CIRCUIT OPTIMAL
When an Uponor DEM-WP module is connected, the heating curve is dynamically optimised for the heat demand of individual rooms. This involves modifying the preset heating curve by up to 50 % of its original value.
The parameter HEATING CIRCUIT OPTIMAL is only displayed when the buffer operation parameter is set to OFF and neither a mixer sensor nor an FE7 remote control are connected.
The parameter HEATING CIRCUIT OPTIMAL can be set to ON or OFF.
The default value is OFF. This parameter may be set to ON only if an Uponor DEM-WP module is connected.
This function is only active inCOMFORT MODE, ECO MODE and PROGRAMMED OPERATION.
FROST PROTECTION
Select FROST PROTECTION to specify the outside temperature at which the frost protection function is activated.
Frost protection function prevents freezing of pipework, open heating circuits and radiators as well as the heat pump.
The heating circuit pumps are started when the temperature falls below the frost protection temperature.
The circulation pumps are switched off when the temperature exceeds the frost protection temperature.

Material losses
The frost protection function cannot protect fully sealed heating circuits and radiators from ice formation, damage and consequential harm.

• Ensure that all heating circuits are slightly open and set the thermostatic valve to at least the frost protection setting.

REMOTE CONTROL FE7
This menu item is only displayed if the remote control is connected. With the remote control, the set room temperature for heating circuit 1 can be adjusted by ± 5 °C. The room sensor measures the actual room temperature. The temperature is displayed in the heat pump manager. The actual room temperature affects the control of heating circuit 1. The remote control is only active in PROGRAMMED OPERATION.
ROOM INFLUENCE
In this menu item you set the degree of influence that the outside temperature or current room temperature has on the control unit.
With weather-compensated control, the room is heated in relation to the outside temperature and the set heating curve.
With room temperature-dependent control, the room is heated consistently to the temperature set on the remote control.

Heating circuit pump control with remote control
f Set the ROOM INFLUENCE to a value greater than 0.
If the actual room temperature is higher than the set room temperature plus 1 K, the heating circuit pump is switched off.

If the actual room temperature is lower than the set room temperature, the heating circuit pump is switched on.
ROOM CORRECTION
Select ROOM CORRECTION to correct the room temperature shown by +/-5 K.
PUMP CYCLES
This parameter affects the behaviour of the heat pump in heating circuit 1.
OFF
The heat pump operates continuously. It shuts down only when SUMMER MODE is active.
ON
The heating circuit pump switches on and off according to the outside temperature.

X Time in minutes

Y Outside temperature in °C

1 Pause

2 Pump runtime

**EXTERNAL HEAT SOURCE**

In this menu item, you can specify the parameters of an external heat source.

An electric threaded immersion heater in the buffer cylinder or a boiler connected to the heating flow in modulating mode (PWM or 0-10 V interface) can be used as an external heat source.

OFF

Set the parameter to OFF if you are not connecting an external heat source to the system.

THREADED IMMERSION HEATER

Set this parameter to ON if an electric threaded immersion heater is installed in the buffer cylinder.

Temperature sensor X1.10, incorporated in the threaded

immersion heater in the buffer cylinder, captures the temperature at the buffer cylinder output to the external heat  source’s heating system.

The external heat source is actuated at temperatures below the set DUAL MODE TEMP HZG; its actuation is load-dependent, as the last stage of a heat pump cascade.

Conditions for activation:

• The temperature falls below the dual mode temperature.
• The heat pump is in operation.
• The actual temperature of the external heat source is lower than the set temperature. The set temperature of the threaded immersion heater is equal to the buffer cylinder set temperature.

Conditions for deactivation:

• The actual temperature of the external heat source is higher than the set temperature.
  The set temperature of the  threaded immersion heater is equal to the buffer cylinder set temperature plus the heating curve gap (parameter HEATING CURVE GAP).

The actual and set temperature of the external heat source can be checked in the INFO / SYSTEM / EXTERNAL HEAT SOURCE menu.

BOILER

• Set this parameter to ON if a gas/oil boiler is installed in the system.
• Temperature sensor X1.10 captures the temperature in the boiler flow.
• Connect sensor X1.6 to the heating flow of the boiler mixer circuit.
  The external heat source is actuated at temperatures below the set DUAL MODE TEMP HZG; its actuation is load-dependent, as the last stage of a heat pump cascade.
  The mixer is controlled according to the set temperature. The set temperature is calculated from the buffer cylinder set temperature plus the heating curve gap. The mixer is released if the actual temperature of the external heat source is higher than the set temperature.

Conditions for activation:

• The temperature falls below the dual mode temperature.
• The heat pump is in operation.
• The temperature must be at least 5 K lower than the set boiler temperature (parameter SET BOILER TEMPERATURE).

Conditions for deactivation:

• The maximum boiler set temperature has been reached.

The actual and set temperature of the external heat source can be checked in the INFO / SYSTEM / EXTERNAL HEAT SOURCE menu.

HZG PWM

Set this parameter to ON if an external heat generator is installed in the system with a PWM interface.

The external heat generator is connected to terminal X1.16.

Temperature sensor X1.10 captures the temperature in the external heat generator flow.

• Connect sensor X1.6 to the heating flow of the external heat generator.
  The external heat source is actuated at temperatures below the set DUAL MODE TEMP HZG; its actuation is load-dependent, as the last stage of a heat pump cascade.
  The external heat generator regulates the temperature to the calculated set value (set buffer temperature + heating curve gap (HEATING CURVE GAP)).

Conditions for activation:

• The temperature falls below the dual mode temperature.
• The heat pump is in operation.
• The set temperature (set buffer temperature + heating curve gap) has not been reached.

Conditions for deactivation:

• The set temperature (set buffer temperature + heating curve gap) has been reached.

HZG 0-10 V

• Set this parameter to ON if an external heat source is installed in the system with a 0 -10 V interface.
  The external heat generator is connected to terminal X1.16.
  Temperature sensor X1.10 captures the temperature in the external heat generator flow.

• Connect sensor X1.6 to the heating flow of the external heat generator.
  The external heat source is actuated at temperatures below the set DUAL MODE TEMP HZG; its actuation is load-dependent, as the last stage of a heat pump cascade.

The external heat generator regulates the temperature to the calculated set value (set buffer temperature + heating curve gap (HEATING CURVE GAP)).

Conditions for activation:

•  The temperature falls below the dual mode temperature.
• The heat pump is in operation.
• The set temperature (set buffer temperature + heating curve gap) has not been reached.

Conditions for deactivation:

• The set temperature (set buffer temperature + heating curve gap) has been reached.

HEATING CURVE GAP

In conjunction with a threaded immersion heater
With this parameter you can set how large the temperature differential to the set heating curve has to be in order to switch off again the threaded immersion heater serving as an external heat source.
In conjunction with a boiler
With this parameter you can set how large the temperature differential to the set heating curve has to be in order to feed the desired flow temperature into the heating system. The desired flow temperature is calculated from the heating circuit set temperature (buffer cylinder set temperature) and the heating curve gap that is set here. The boiler mixer circuit is controlled according to the flow temperature.
In conjunction with an external heat generator with a PWM or 0-10 V interface With this parameter, you can set how large the temperature deviation from the set heating curve has to be in order to switch the external heat generator off again.

SET BOILER TEMPERATURE

Note

Set this parameter if you are using a cast iron boiler, in order to prevent the formation of condensate. Observe the boiler manufacturer’s instructions.

With this parameter you can set how high the temperature in the boiler should be.
BLOCKING TIME EVU
During a tariff blocking time by the power supply utility, the heat pump cannot meet a heat demand. With this parameter, you can specify the behaviour of the external heat source during blocking time.

OFF
During blocking time, the external heat source assumes responsibility for heating even above the dual mode temperature.

1-10 hours

If the external heat source is not to assume responsibility for heating during a blocking time, therequired blocking time can be  specified in hours.

Set the number of hours of blocking time after which the external heat source should assume responsibility for heating.
Confirm the selection with OK.

LOWER APP LIMIT HZG
With this parameter, you can specify the lower application limit of the heat pump. Below the outside temperature that is set here, the heat pump is shut down. Heating demand will be covered by the external heat source alone.
DUAL MODE TEMP HZG
With this parameter, you can specify the dual mode temperature of the heat pump. Below this set outside temperature, the external heat source may back up the heat pump if the heating output has not been reached. The external heat source assumes responsibility for heating demand jointly with the heat pump.
HZG PWM
With this parameter you can set how quickly the external heat source/gas burner corrects a deviation in temperature. The smaller the value, the quicker control is restored.

Cooling and DHW heating with air/water heat pump cascades
With an air/water heat pump cascade, cooling and DHW heating can take place in parallel.
In the SETTINGS / DHW / STANDARD SETTING / DHW MODE menu, set the parameter PARTIAL PRIORITY to ON.
The heat pump specified for DHW and the corresponding DHWcharging pump are switched on in response to DHW demand.
The remaining heat pumps in the cascade provide cooling.

COOLING
Here you can switch the cooling function of the heat pump on or off.
COOLING MODE
PASSIVE COOLING
Passive cooling is possible only with brine/water heat pumps.
Cooling takes place initially with the heating circuit pump. Controller output X2.13 is switched on. Additional zone valves or diverter valves can be actuated with controller output X2.13, for example.
If after 60 seconds the actual flow temperature is higher than the set flow temperature, the source and buffer charging pumps are started.
On cascades, the additional source and buffer charging pumps are switched on one after the other if the flow temperature cannot be further reduced. Whether these additional pumps are activated depends on the set dynamics  DYNAMICS PASSIVE).

ACTIVE COOLING
Control characteristics with brine/water heat pumps
Cooling initially takes place passively (see PASSIVE COOLING). If theflow temperature cannot be further reduced by passive cooling,
the compressor also starts.
On cascades, the additional source and buffer charging pumpsand compressor are switched on one after the other if the flowtemperature cannot be further reduced. Whether these additionalpumps are activated depends on the set dynamics (DYNAMICSACTIVE or DYNAMICS PASSIVE).
Control characteristics with air/water heat pumps
Cooling takes place initially with the heating circuit pump. Controller output X2.13 is switched on. Additional zone valves or diverter valves can be actuated with controller output X2.13, for example. If after 60 seconds the actual flow temperature is higher than the set flow temperature, the buffer charging pump and compressor are started. On cascades, the additional buffer charging pumps and compressor are switched on one after the other if the flow temperature cannot be further reduced. Whether these additional pumps and compressors are activated depends on the dynamics setting (DYNAMICS ACTIVE).

****HEAT INTERFACE UNIT When cooling without central dew point monitoring, the system is controlled to an adjustable set temperature (SET FLOW TEMPERATURE). Supercooling of the buffer cylinder (e.g. with photovoltaic integration) is possible. Mixer control ensures that the selected flow temperature is not undershot. Central dew point monitoring with an FET remote control is not possible.
Ensure decentralised dew point monitoring in the respective residential units.
In combination with our heat interface units, connect the cooling output signal to the controller of the heat interface unit via a corresponding contactor/relay. For this, observe the operating and installation instructions of the heat interface unit.

STANDARD SETTING
COOLING STAGES
Select the number of heat pumps enabled for cooling mode.
COOLING LIMIT
With this parameter, the lower application limit for cooling mode is specified. If the outside temperature is below the set application limit, cooling mode is deactivated.
COOLING CAPACITY
With this parameter, the maximum cooling capacity of the heat pump is specified in kW.
FLOW TEMP HYSTERESIS
If the sum of the flow temperature and the set hysteresis is greater than the set temperature, the compressor is switched on.
DYNAMICS ACTIVE
This parameter specifies how quickly the individual heat pumps in a cascade start. The higher the set dynamics, the slower the downstream heat pumps start up.
Dynamics for brine/water heat pump
– Dynamic 0
The compressor starts at the same time as the source pump.
– Dynamic 1
If the source pump has been running for 10 minutes and the current flow temperature is higher than the set flow temperature with a hysteresis of 0.5 K, the compressor starts.
– Dynamics 10
If the source pump has been running for 30 minutes and the current flow temperature is higher than the set flow temperature with a hysteresis of 2 K, the compressor starts.

Note
With the other available values (2 to 9), the hysteresis is interpolated correspondingly.
Dynamics with air/water heat pumps
– Dynamic 1
If the first compressor has been running for 10 minutes and the current flow temperature is higher than the set flow temperature with a hysteresis of 0.5 K, the next downstream heat pump starts.
– Dynamics 10
If the first compressor has been running for 30 minutes and the current flow temperature is higher than the set flow temperature with a hysteresis of 2 K, the next downstream heat pump starts.
Note
With the other available values (2 to 9), the hysteresis is interpolated correspondingly.

DYNAMICS PASSIVE
Dynamics with brine/water heat pumps
This parameter specifies how quickly the individual heat pumps in a cascade start. The higher the set dynamics, the slower the downstream heat pumps start up.
– Dynamic 1
After the controller output X2.13 has been switched, the source and buffer charging pumps start in sequence, each after a delay of one minute.
– Dynamic 10
After the controller output X2.13 has been switched, the source and buffer charging pumps start in sequence, each after a delay of five minutes.
Note
With the other available values (2 to 9), the hysteresis is interpolated correspondingly.

ACTIVE COOLING / PASSIVE COOLING
Passive cooling is possible only with brine/water heat pumps.
AREA COOLING / FAN COOLING
Area cooling
In the case of area cooling, the cooling of the building takes place by means of the available underfloor or wall heating. In order to monitor relative humidity, an FET remote control for the heating circuit must be connected.
Fan cooling
In the case of fan cooling, the cooling of the building takes place by means of fan convectors. In order to monitor room temperature, an FE 7 or FET remote control for theheating circuit muste connected.

SET FLOW TEMPERATURE
Area cooling
The mixer regulates the flow temperature set here.
Fan cooling
When this temperature has been reached during cooling, the compressor is switched off.
Under passive cooling, the source and buffer charging pumps are also switched off.
FLOW TEMP HYSTERESIS
If the sum of the flow temperature and the set hysteresis is greater than the set temperature, the compressor is switched on.

SET ROOM TEMPERATURE
The heat pump cools the room down to the room temperature set here minus a fixed hysteresis of 2 K.
DYNAMICS ACTIVE
See description above.
DYNAMICS PASSIVE
See description above.
COOLING CIRCUIT 1 / 2 / 3 / 4 / 5
SET FLOW TEMPERATURE
In this menu item, you set the temperature required in the cooling circuit heat exchanger in order to reach the set temperature in the respective room.
COOLING TYPE
Here you can specify whether the cooling circuit is used for fan or area cooling.
SET ROOM TEMPERATURE
The heat pump cools the room down to the room temperature set here minus a fixed hysteresis of 2 K.
INCREASE COOLING CURVE
With the INCREASE COOLING CURVE menu item, you can select a cooling curve for each of the cooling circuits.
The set flow temperature is calculated from the cooling curve, outside temperature and start temperature.
The minimum flow temperature depends on the type of cooling and whether a buffer cylinder is installed.

START TEMPERATURE
The heat pump starts cooling at the room temperature that is set here.
COOLING CURVE VIEW
The graphic that appears on the display shows the current cooling curve.
**SWIMMING POOL
With the swimming pool function, the swimming pool water is heated to a set temperature by means of a heat exchanger. The pump connected to terminal X4.12 pumps the heating water from a buffer cylinder through the heat exchanger. The pump connected to terminal X4.13 pumps the water into the swimming pool. The heat pump can also heat the swimming pool without a buffer cylinder. The pump connected to terminal X4.12 pumps the heating water through the  heat exchanger. The pump connected to terminal X4.13 pumps the water into the swimming pool.
SWIMMING POOL
Set whether the swimming pool function should be switched on or off.
DEMAND
The swimming pool function can be requested in various ways.
In order for swimming pool water heating to begin, the set conditions must be met and the SWIMMING POOL PROGRAM (in the  PROGRAMS menu) must be active.
Choose the conditions that activate the swimming pool function.
230 V INPUT
Heating of the swimming pool water can be requested via an external signal. As soon as a 230 Vsignal is received at input X4.2,  heating of the swimming pool water commences.
SENSOR INPUT
If the temperature measured by swimming pool sensor X3.5 is lower than the sum of the set temperature and hysteresis, heating of the swimming pool water is started.
SET TEMPERATURE
** With this parameter you can set the set temperature for the swimming pool.
HYSTERESIS
The value set here specifies the temperature difference from the  set temperature at which heating of the swimming pool water commences.

BUFFER OPERATION

If a sensor is connected to terminal X3.4, swimming pool mode is possible without a buffer cylinder. The swimming pool sensor X3.4 is responsible for switching the heat pump on and off.

FIXED VALUE

In this menu item you set the temperature required in the heat exchanger in order to reach the set temperature in the swimming pool.

DIFFERENTIAL CONTROLLER 1 / 2

With the WPE heat pump extension, two differential controllers working independently of one another can be set up, each controlling one output (X4.10 and X4.11). Output X4.10 is controlled  via differential sensors 1.1 (X3.9) and 1.2

(X3.10).

Output X 4.11  is controlled via differential sensors 2.1 (X 3.11) and 2.2 (X 3.12).

Example for output X4.10

The differential controller function can be used, for example, to connect a water-bearing stove to a system with a buffer cylinder.
Here differential sensor 1.1 (X3.9) is positioned inside the water chamber of the stove. Differential sensor 1.2 (X3.10) is located in the buffer cylinder. If the differential between X3.9 and X3.10 exceeds the set start differential and the  maximum and minimum temperature limits are satisfied, output X4.10 is switched on. A pump connected to output X4.10 supplies the water heated in the stove to the buffer cylinder.
DIFFERENTIAL CONTROLLER 1 / 2

Set the parameter to ON or OFF.

START DIFFERENTIAL

Here you can set the temperature differential which must prevail between both sensors in order to switch on the associated output (X4.10 or X4.11). If the start differential set here is exceeded, the associated output is switched on.

HYSTERESIS

Example for output X4.10 With this parameter you can specify the extent to which the temperatures from differential sensors 1.1 and 1.2 can converge.

For  the purposes of the calculation, the hysteresis set here is subtracted from the set start differential.

Only when the temperature  differential has reached the start differential minus the set hysteresis does the output switch off.

MINIMUM TEMPERATURE

Example for output X4.10

Here you can set the minimum temperature that must be present at differential sensor 1.1 for the pump to start, once the start differential has been reached.

Menu: COMMISSIONING

Note
Differential sensor  1.1 must be installed at the heat source (e.g. the water chamber of the stove).

MAXIMUM TEMPERATURE
Example for output X4.10
Here you can set the maximum temperature that must be present at differential sensor 1.2.
If the temperature at differential sensor 1.2 is higher than the maximum temperature, output X4.10 is switched off.
Note
Differential sensor 1.2 must be installed at the heat store (e.g. buffer cylinder).
STOP DELAY
Example for output X4.10
This parameter specifies a run-on time for the pump (outpuX4.10).
THERMOSTAT FUNCTION 1 / 2
With the WPE heat pump extension, two thermostat functionsworking independently of one another can be set up, each controlling one output (X4.10 and X4.11).
Output X4.10 is controlled via thermostatic sensor 1 (X3.9).
Output X 4.11 is controlled viathermostatic sensor 2 (X 3.11).
** THERMOSTAT FUNCTION 1 / 2
Set the parameter to ON or OFF.
SET TEMPERATURE
Example for output X4.10
You can set a temperature here. If this temperature is exceeded, the output (X4.10) is switched on.
HYSTERESIS**
Example for output X4.10
You can set a temperature deviation here. If the actual temperature falls below the set temperature by this value, the output (X4.10) is switched off.

COMMISSIONING

SOURCE
MIN SOURCE TEMPERATURE

Material losses
Never operate the heat pump with source temperatures below –9 °C.
When set to OFF, the temperature at the source sensor is not scanned.
If the actual temperature drops below the minimum source temperature, the compressor is switched off and the idle time is set.
The compressor is enabled again after the idletime has expired and the fixed hysteresis of 2 K has been exceeded.
The source pump will always be started 30 seconds earlier than the compressor, which starts when there is a heat demand for central heating or DHW.
Note
The source pump runs on for 60 seconds after the heat pump has been shut down.

SOURCE MEDIUM
In this menu item you set the source medium used by the heat pump.
ETHYLENE GLYCOL
WATER
GROUNDWATER MODULE
MAX. SOURCE EXTRACTION RATE
In this menu item, you can set the maximum output to be extracted from the heat source, to prevent the heat source from being overloaded.
CHARGING PUMP CONTROL
With these parameters, the operating characteristics and control of the charging pumps can be specified.
STANDBY/HEATING/DHW/COOLING/DEFROST
Settings can be made for the charging pumps in these operating modes.
TYPE OF CONTROL
MINIMUM PUMP RATE
With this parameter, you set the minimum flow rate and therefore the pump rate. The pump rate does not fall below the value set here.
AVERAGE PUMP RATE
With this parameter, you set the average flow rate and therefore the pump rate. The pump rate will not exceed the value set here.
MAXIMUM PUMP RATE
With this parameter, you set the maximum flow rate and therefore the pump rate. The pump rate will not exceed the value set here.
ADJUSTABLE PUMP RATE
With this parameter, you set the flow rate and therefore the pump rate. The pump rate will not exceed the value set here.
SPREAD CONTROL
With this parameter, you can enable or disable spread control.
SET VALUES
PUMP RATE
In this menu item you can set the pump rate for the connected pump. The pump rate is used to specify the flow rate. Please also note the information on flow rate (see the operating instructions for the pump and the chapter “Specification /Data table” in the operating and installation instructions for the heat pump).
SPREAD
Here, you can set the temperature differential between the flow and return sensors.
The heat pump keeps the temperature differential constant at the set value by adjusting the circulation pump flow rate accordingly.
STANDARD SETTING
MINIMUM PUMP RATE
With this parameter, you set the minimum flow rate and therefore the pump rate. The pump rate does not fall below the value set here.

Only applicable to spread control:
The time taken to achieve the set spread can vary on account of this setting.
MAXIMUM PUMP RATE
With this parameter, you set the maximum flow rate and therefore the pump rate. The pump rate will not exceed the value set here.
Only applicable to spread control:
The time taken to achieve the set spread can vary on account of this setting.

HEATING
CONTROLLER DYNAMICS
The CONTROLLER DYNAMICS parameter influences the stabilisation speed of the heat pump output controller.
The heat pump output controller functions primarily as an integral controller.
The control deviation (the differential between actual  and set heating circuit temperatures) is accumulated over time.
The result is the integral of the control deviation in Kelvin minutes.
Every time the switching value adjustable with this parameter is reached, the output is switched one stage higher or lower.
Example: Where the control deviation is 5 K, it takes 10 minutes for the switching value of 50 Kmin to be reached.
The compressor, or in a cascade the next compressor stage, then switches and the integral of the control deviation is reset to zero.
Normally, the preselected CONTROLLER DYNAMICS should be sufficiently fast and operate without oscillation. Heating systems that respond quickly require a lower value, whilst very slow responding systems require a higher value to be set.
HYSTERESIS
For on/off heat pumps with buffer cylinder, you can set here the start hysteresis for the heat pump.
SPREAD CONTROL
The flow rate for the circulation pump is controlled automatically by the heat pump.
SET SPREAD
Here, you can set the temperature differential between the flow and return sensors.
The heat pump keeps the temperature differential constant at the set value by adjusting the circulation pump flow rate accordingly.
MAXIMUM PUMP RATE
With this parameter, you set the maximum flow rate and therefore the pump rate. The pump rate will not exceed the value set here.
The time taken to achieve the set spread can vary on account of this setting.
MINIMUM PUMP RATE
With this parameter, you set the minimum flow rate and therefore the pump rate. The pump rate does not fall below the value set here.
The time taken to achieve the set spread can vary on account of this setting.
STANDBY PUMP RATE
Here, you can set the minimum pump rate for the internal circulation pump while the heat pump is idle.
The pump will run at the output set here as long as the heat pump does not receive a heat demand, as well as during power-OFF periods and idle times.
HEATING CIRC PUMP RATE
Set the flow rate via the heating circuit pump output. Please also note the information on flow rate (see chapter “Specification /Data  table” in the operating and installation instructions for the heat pump).
DHW
DHW CIRCUIT PUMP RATING
Set the maximum flow rate via the DHW pump output. If noise occurs, reduce the output.
COMPRESSOR
MINIMUM DEFROST TIME
Set here the defrost time for the heat pump defrost procedure.
The selected time applies to manual or demand-dependent defrosting.
START DEFROST
Manual defrost can be started only if the heat pump is in operation.
The defrost signal is displayed.
Maximum defrost time The maximum defrost time for all heat pumps is 20 minutes. Defrosting is terminated after the maximum defrost time has elapsed.
The heat pumps are then forced to operate in heating mode for 20 minutes.
Only then can a new defrost process be initiated.
IDLE TIME
To protect the compressor, an idle time is set following shutdown  of a heat pump. The default idle time of 10 or 20 minutes (according to heat pump type) should normally not be reduced. Where  a reduction is required because of adjustments or repair work,  reset the idle time back to 10 or 20 minutes after completing the necessary work.

Note

During an intensive defrost, higher operating costs may be incurred.

****HEATING SYSTEM SIZING

The heat demand for the house is set here, taking into consideration the lowest regional temperatures (for example 10 kW heat  demand at – 14 °C outside temperature).

During operation, the device will use this to calculate the optimum value for heat pump operation.

Refer to the building’s heat demand calculation to determine the values.

Please note that if a higher heat demand is set, the efficiency of the overall system will reduce. On the other hand, if the heat demand is set too low, a degree of comfort may be lost.

****DESIGN TEMPERATURE

Select the design temperature here. This will be the outside temperature (°C) for which heat demand was calculated, in the region where the heat pump is being used.

HEAT DEMAND

Select the heat demand calculated for the design temperature here.

CONSTANT OUTPUT

This parameter determines the heating output as a fixed value, for swimming pool operation and the heat-up program. The output is then controlled to the permanently set output, irrespective of the outside temperature.

CONDENSATE RIBBON HEATER

The condensate ribbon heater ensures that condensate can drain away even at low outside temperatures.

OUTSIDE TEMPERATURE

Set here the outside temperature above which the condensate ribbon heater is switched on.

QUICK START

During commissioning, you can test the heat pump function by triggering a heat pump quick start. When calling up parameters, OFF is shown on the display. If you set it to ON and press OK, a quick start is initiated. The value on the display visibly counts down from 60 to 0 s. On quick start the display then shows ON. After that, the heat pump and the associated buffer charging pump are switched on.

SILENT MODE

Reduced noise mode

SILENT MODE is an operating mode for air/water heat pumps in which the sound level of the heat pump is reduced.

Note
Silent mode has an effect on the heating output and efficiency of the heat pump. When silent mode is active, operating costs will be higher. In silent mode 2, heating and DHW heating are provided solely via the emergency/booster heater.
In the “PROGRAMS / SILENT PROGRAM 1” menu, set the times when the heat pump should switch to a quieter operating mode.
FAN REDUCTION
As soon as this parameter is set to ON, while SILENT PROGRAM 1 is enabled, the fan speed of the heat pumps is reduced.
OUTPUT REDUCTION
As soon as this parameter is set to ON, while SILENT PROGRAM 1 is enabled, the fan speed and the compressor output of the heat pump can be reduced independently of each other by means of the following parameters.
OUTPUT
The reduction in the compressor output can be set here in %.
FAN
The reduction in the fan speed can be set here in %.
HEAT PUMP OFF
As soon as this parameter is set to ON, while SILENT PROGRAM 2 is enabled, the heat pump is switched off and the internal or external second heat source takes over the DHW / Central heating function.
POWER-OFF
During a tariff blocking time by the power supply utility, the heat pump cannot meet a heat demand. With this parameter, you can specify the characteristics of the heat pump and the internal reheating stages during a tariff blocking  time.
OFF
No heat generator is blocked during the tariff blocking time.
HEAT PUMP + ELECTRIC BOOSTER HEATER
During the tariff blocking time, the heat pump and the electric emergency/booster heater are blocked.
HEAT PUMP
The heat pump is blocked during the tariff blocking time.
ELECTRIC BOOSTER HEATER
During the tariff blocking time, the electric emergency/booster heater is blocked.
SYSTEM TYPE
If an HMH is installed in the heating system, this value must be set to 1.
I/O CONFIGURATION
INPUT X1.13
In this menu item, you can set which functions of input X 1.13 should be adopted.
Never apply external voltages.

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References

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• STIEBEL ELTRON International
• STIEBEL ELTRON International
• Ersatzteil- und Zubehörshop

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