STIEBEL ELTRON WPF 16, WPF 04 cool, WPF 05 cool, WPF 07 cool, WPF 13 cool Operation And Installation

OPERATION AND INSTALLAT ION

Brine | water heat pump

» WPF 04
» WPF 05
» WPF 07
» WPF 10
» WPF 13
» WPF 16
» WPF 04 cool
» WPF 05 cool
» WPF 07 cool
» WPF 10 cool
» WPF 13 cool
» WPF 16 cool
» WPF 05 S
» WPF 07 S
» WPF 10 S
» WPF 13 S

2 |WPF | WPF cool www.stiebel-eltron.com

CONTENTS

SPECIAL INFORMATION

OPERATION

1. General information _________________________________________4

1.1 Safety instructions ����������������������������������������������� 4

1.2 Other symbols in this documentation ����������������������� 4

1.3 Units of measurement ������������������������������������������ 4

1.4 Standardised output data �������������������������������������� 4

2. Safety __________________________________________________________ 5

2.1 Intended use ������������������������������������������������������ 5

2.2 Safety instructions ����������������������������������������������� 5

2.3 Test symbols ������������������������������������������������������ 5

3. Appliance description _______________________________________5

3.1 Special features of the WPF ... cool �������������������������� 5

3.2 Accessories �������������������������������������������������������� 6

4. Operation _____________________________________________________7

4.1 Controls ������������������������������������������������������������ 7

4.2 Entering parameters �������������������������������������������� 8

4.3 Selecting operating modes ������������������������������������ 9

4.4 Picture symbols �������������������������������������������������� 9

5. Menu structure _____________________________________________ 10

5.1 Info menu �������������������������������������������������������� 10

5.2 DIAGNOSIS menu ����������������������������������������������� 12

5.3 PROGRAMS menu ���������������������������������������������� 13

5.4 Settings menu ��������������������������������������������������� 15

6. Maintenance and care _____________________________________ 22

7. Troubleshooting ____________________________________________ 22

7.1 Other problems ������������������������������������������������� 22

INSTALLATION

8. Safety ________________________________________________________ 23

8.1 General safety instructions ����������������������������������� 23

8.2 Instructions, standards and regulations ������������������� 23

9. Appliance description _____________________________________ 23

9.1 Mode of operation ���������������������������������������������� 23

9.2 Special features of the WPF...cool ���������������������������23

9.3 Standard delivery ����������������������������������������������� 23

9.4 Accessories �������������������������������������������������������23

10. Preparations ________________________________________________ 23

10.1 Electrical installation������������������������������������������� 24

11. Installation __________________________________________________ 25

11.1 Handling ���������������������������������������������������������� 25

11.2 Siting �������������������������������������������������������������� 25

11.3 Removing the casing parts ����������������������������������� 25

11.4 Installing the heat source system ��������������������������� 25

11.5 Heating water connection ������������������������������������� 27

11.6 Oxygen diffusion ������������������������������������������������ 28

11.7 Filling the heating system ������������������������������������ 28

11.8 Venting the heating system ����������������������������������� 29

11.9 DHW heating ����������������������������������������������������� 29

11.10 Operation with buffer cylinder ������������������������������� 29

11.11 Fitting the push-fit connectors ������������������������������� 29

12. Power supply _______________________________________________ 30

12.1 General �����������������������������������������������������������30

12.2 Power supply ����������������������������������������������������30

12.3 Sensor installation ���������������������������������������������� 33

12.4 Safety temperature controller for underfloor heating
system STB-FB �������������������������������������������������� 33

12.5 Remote control FE 7 �������������������������������������������� 33

12.6 Remote control FEK ��������������������������������������������34

12.7 Uponor DEM WP module �������������������������������������� 34

12.8 Internet Service Gateway ISG �������������������������������� 34

13. Commissioning _____________________________________________ 34

13.1 Checks before commissioning�������������������������������� 34

13.2 Heating curve adjustment during commissioning �������35

13.3 Commissioning menu ������������������������������������������ 35

13.4 WPM3i commissioning report �������������������������������� 38

14. Settings _____________________________________________________ 40

14.1 Standard settings ����������������������������������������������� 40

14.2 Heating and DHW programs ���������������������������������� 40

14.3 Appliance handover �������������������������������������������� 40

15. Shutting down ______________________________________________ 41

16. Troubleshooting ____________________________________________ 41

16.1 Fault display ����������������������������������������������������� 41

16.2 Fault message ��������������������������������������������������� 41

16.3 Resetting the high limit safety cut-out ��������������������� 42

16.4 Resetting the compressor high limit safety cut-out ����� 42

16.5 Fault table �������������������������������������������������������� 43

17. Maintenance ________________________________________________ 44

18. Specification ________________________________________________ 45

18.1 Dimensions and connections ��������������������������������� 45

18.2 Wiring diagram WPF 04 | 04 cool | WPF 05 | 05 cool�����46

18.3 Wiring diagram WPF07| 07cool| WPF10| 10cool|
WPF13| 13cool| WPF16| 16cool �������������������������48

18.4 Wiring diagram WPF 05 S | WPF 07 S | WPF 10 S |
WPF 13 S ���������������������������������������������������������� 50

18.5 Output diagrams WPF 04 | WPF 04 cool �������������������� 52

18.6 Output diagrams WPF 05 | WPF 05 cool �������������������� 54

18.7 Output diagrams WPF 07 | WPF 07 cool �������������������� 56

18.8 Output diagrams WPF 10 | WPF 10 cool �������������������� 58

18.9 Output diagrams WPF 13 | WPF 13 cool �������������������� 60

18.10 Output diagrams WPF 16 | WPF 16 cool �������������������� 62

18.11 Output diagrams WPF 05 S ����������������������������������� 64

18.12 Output diagrams WPF 07 S ����������������������������������� 66

18.13 Output diagrams WPF 10 S �����������������������������������68

18.14 Output diagrams WPF 13 S ����������������������������������� 70

18.15 Data table WPF .... ���������������������������������������������� 72

18.16 Data table WPF .... cool ���������������������������������������� 74

18.17 Data table WPF .... S ������������������������������������������� 76

GUARANTEE

ENVIRONMENT AND RECYCLING

SPECIAL INFORMATION

www.stiebel-eltron.com WPF | 3

SPECIAL INFORMATION

- The appliance may be used by children aged8
and up and persons with reduced physical, sen­sory or mental capabilities or a lack of experience
and know-how, provided that they are supervised
or they have been instructed on how to use the
appliance safely and have understood the result­ing risks. Children must never play with the ap­pliance. Children must never clean the appliance
or perform user maintenance unless they are
supervised.

- Use a permanent connection to the power supply.
Ensure the appliance can be separated from the
power supply by an isolator that disconnects all
poles with at least 3mm contact separation.

- Maintain the minimum clearances to ensure trou­ble-free operation of the appliance and facilitate
maintenance work.

- In dual mode operation, return water from the
second heat generator may flow through the heat
pump. Please note that the return water tempera­ture may be a maximum of 60°C.

- Active cooling is only possible in conjunction with
a suitable hydraulic circuit. Set parameter COOL­ING to ACTIVE COOLING. The COOLING parameter
will only be shown if a FEK or FE 7 remote control
is connected. Cooling mode is only possible in
summer mode.

- The WPF...S is not suitable for cooling.

- The air outlet in the knurled cap of the quick-ac­tion air vent valve must not point towards the
MFG PCB. Close the quick-action air vent valve
again after venting.

- Maintenance work, such as checking the electri­cal safety, must only be carried out by a qualified
contractor.

- We recommend an annual inspection (to establish
the system’s current condition), and maintenance
by a qualified contractor if required (to return the
system to the desired condition).

- Never interrupt the power supply, even outside
the heating period. The system’s active frost pro­tection is not guaranteed if the power supply is
interrupted.

- There is no need to shut the system down in
summer. The heat pump manager has an auto­matic summer/winter changeover.

OPERATION

General information

4 |WPF | WPF cool www.stiebel-eltron.com

OPERATION

1. General information

The chapters „Special Information“ and „Operation“ are intended
for both the user and qualified contractors.

The chapter "Installation" is intended for qualified contractors.

Note

Read these instructions carefully before using the appli­ance and retain them for future reference.
Pass on the instructions to any new user if required.

1.1 Safety instructions

1.1.1 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.

1.1.2 Symbols, type of risk

Symbol Type of risk

Injury

Electrocution

Burns
(burns, scalding)

1.1.3 Keywords

KEYWORD Meaning

DANGER Failure to observe this information will result in serious

injury or death.

WARNING Failure to observe this information may result in serious

injury or death.

CAUTION Failure to observe this information may result in non-seri-

ous or minor injury.

1.2 Other symbols in this documentation

Note

General information is identified by the symbol shown
on the left.

 Read these texts carefully.

Symbol Meaning

Material losses
(appliance and consequential losses, environmental pol­lution)

Appliance disposal

 This symbol indicates that you have to do something. The ac-

tion you need to take is described step by step.

1.3 Units of measurement

Note

All measurements are given in mm unless stated oth­erwise.

1.4 Standardised output data

Explanations to determine and interpret the specified standardised
output data.

1.4.1 Standard: EN 14511

The output data specifically mentioned in text, diagrams and
technical datasheets has been calculated according to the test
conditions of the standard shown in the heading of this section.

Generally, these standardised test conditions will not fully meet
the conditions found at the installation site of the system user.

Depending on the chosen test method and the extent to which
the selected method deviates from the conditions described in
the standard shown in the heading of this chapter, any deviations
can have a considerable impact.

Further factors that have an influence on the test values are the
measuring equipment, the system configuration, the age of the
system and the flow rates.

A confirmation of the specified output data can only be obtained
if the conditions applicable to the relevant test match those of the
standard shown in the heading of this chapter.

!

!

OPERATION

Safety

www.stiebel-eltron.com WPF | WPF cool | 5

2. Safety

2.1 Intended use

The appliance is designed for:

- heating rooms

- DHW heating

Observe the operating limits listed in chapter "Specification".

This appliance is intended for domestic use. It can be used safely
by untrained persons. The appliance can also be used in a non-do­mestic environment, e.g. in a small business, as long as it is used
in the same way.

Any other use beyond that described shall be deemed inappropri­ate. Observation of these instructions and of instructions for any

accessories used is also part of the correct use of this appliance.

2.2 Safety instructions

- The electrical installation and installation of the heating cir­cuit must only be carried out by a recognised, qualified con­tractor or by our customer service engineers.

- The qualified contractor is responsible for adherence to all
currently applicable instructions during installation and
commissioning.

- Operate the appliance only when fully installed and with all
safety equipment fitted.

- Protect the appliance from dust and dirt ingress during
building work.

!

WARNING Injury
The appliance may be used by children aged 8 and up and
persons with reduced physical, sensory or mental capa­bilities or a lack of experience and know-how provided
that they are supervised or they have been instructed
on how to use the appliance safely and have understood
the resulting risks. Children must never play with the
appliance. Children must never clean the appliance or
perform user maintenance unless they are supervised.

Note

Do not change any system-specific settings at the control
unit. Your contractor has set the control unit to match
the local conditions for your building and your individual
requirements. The system-specific parameters are pro­tected by a code scan so they cannot be unintentionally
modified.
The parameters that serve to match the appliance to your
personal requirements are not protected by a code scan.

2.3 Test symbols

See type plate on the appliance.

3. Appliance description

The appliance is a heating heat pump suitable for operation as a
brine/water heat pump. The heat pump extracts energy from the
heat source medium at a low temperature level. This extracted
energy is then transferred to the heating water at a higher level,
enriched by the electric energy drawn by the compressor. Subject
to the heat source temperature, the heating water can be heated
up to a flow temperature of 65 °C.

The heating circuit pump, a multi function assembly (MFG) with
safety assembly and a three-way valve have been integrated in the
appliance for diverting the flow either to the heating circuit or the
DHW circuit. DHW is heated by pumping the heating water, which
has been heated by the heat pump, through an indirect coil in the
DHW cylinder, where it transfers its energy to the DHW.

The appliance is equipped with an electric emergency/booster
heater (DHC). If the dual mode point can no longer be maintained
in mono mode operation, the electric emergency/booster heat­er is activated to safeguard heating operation and the provision
of high DHW temperatures. In such cases, the electric emergen­cy/booster heater is activated in mono energetic operation as a
booster heater.

The appliance is regulated by an integral, weather-compensated
return temperature controller (WPM3i heat pump manager).

The WPM3i also regulates the DHW heating to the required tem­perature. If either the high pressure sensor or the hot gas limiter
of the heat pump responds during DHW heating, then DHW heating
will automatically be completed by an integral electric emergency/
booster heater, subject to the DHW learning function being disa­bled. If the DHW learning function is enabled, DHW heating will
cease and the set DHW value is overwritten with the actual DHW
temperature achieved.

The WPM3i also controls the integral electric emergency/booster
heater. No other heat generator can be switched.

3.1 Special features of the WPF ... cool

An additional heat exchanger and three-way valve for changing
over between heating and cooling are integrated into the WPF...
cool.

The living space is cooled by the brine being pumped though the
additional heat exchanger, where the energy from the heating
water is extracted and passed to the cooler zones underground.

The compressor does not run during cooling.

OPERATION

Appliance description

6 |WPF | WPF cool www.stiebel-eltron.com

3.2 Accessories

3.2.1 FE7 remote control

PIC00000609

The FE7 remote control allows you to:

- Change the set room temperature for heating in heating cir­cuit1 or2 by ±5°C.

- Change the operating mode.

The FE7 remote control features the following controls:

- Rotary selector for changing the set room temperature

- Rotary selector with the following positions

-

Automatic mode

-

Constant setback mode

-

Constant day mode

Note

The remote control is only active in the automatic mode
of the heat pump manager.
You can set the temperature for heating times in auto­matic mode at the remote control.

3.2.2 FEK remote control

PIC00000704

The FEK remote control allows you to:

- Change the set room temperature for heating in heating cir­cuit1 or2 by ±5°C.

- Change the operating mode.

The FEK features the following controls:

- Rotary selector for changing the set room temperature

- „Away“ button

- „Info“ button

- Button for selecting the following operating modes:

-

Standby mode

-

Automatic mode

-

Constant day mode

-

Constant setback mode

Note

If the FEK is preselected for a specific heating circuit,
the heating curve, room temperature and heating pro­gram parameters are not shown at the WPM3i heat pump
manager.

3.2.3 Internet Service Gateway (ISG)

PIC00001002

The Internet Service Gateway (ISG) is an Ethernet gateway in a
wall mounted casing and is connected into the LAN (local area
network).

It enables the convenient operation, adjustment and checking of
heat pump system data via the browser of a computer, laptop or
tablet in the local home network.

If required by the customer, appliance data can be automatically
transmitted to the appliance manufacturer‘s SERVICEWELT portal
via the internet.

Via SERVICES you can access additional options such as system
operation on the go with a smartphone as well as remote setting
of parameters and remote diagnosis, etc.

You can find the current services on our homepage.

OPERATION

Operation

www.stiebel-eltron.com WPF | WPF cool | 7

4. Operation

4.1 Controls

OKMENU

D0000064711

1 32 4

WEDNE SDAY 12 JUN 13 10:23 TI ME

OUTSIDE TEMPERATURE
ACTUAL DH W TEMP

27.0 °C

35.0 °C

28.0 °C

ACTUAL RETURN TEMP

ECO MODE

1 Display
2 MENU key
3 Scroll wheel
4 OK key

You control the system with the programming unit of the heat
pump manager. Use the scroll wheel and the MENU and OK keys
to navigate through the menu structure.

4.1.1 Display

The programming unit display shows the current state of the sys­tem and provides messages and information.

Start screen

WEDNESDAY 12 JUN 13 10:23 TIME

OUTSIDE TEMPERATURE

ACTUAL DHW TEMP

27.0 ° C

35.0 °C

28.0 °C

ACTUAL RETURN TEMP

26�04�01�0292

ECO MODE

1 Date and time
2 Temperature display
3 Operating mode
4 System status picture symbols

The start screen is divided into four sections. The top field displays
the date and time. The field below displays the outside tempera­ture along with the actual DHW temperature and the actual return
temperature. The third section is for selecting and displaying the
operating modes. In the fourth section, picture symbols indicate
the current system state.

Activation

If the scroll wheel and keys/fields are not used for 20minutes,
the programming unit is locked.

WEDNESDAY 12 JUN 13 10:23 TIME

OUTSIDE TEMPERATURE
ACTUAL DHW TEMP

27. 0 ° C

35.0 °C

28.0 °C

ACTUAL RETURN TEMP

ECO MODE

To activate please

for 3 seconds

press MENU.

26�04�01�0292

 Touch the MENU key for three seconds to enable the pro-

gramming unit.

Selection indicator

A highlighter within the menu structure indicates the current po­sition at all times. This displays the selected menu item with a
dark background. The current menu level is displayed at the top
of the display.

4.1.2 Scroll wheel

D0000064710

The scroll wheel comprises a sensor that is touch-sensitive. There
is one key array each to the left and right of the scroll wheel. All
required appliance functions are controlled and checked with the
scroll wheel and the keys.

Note Sensor responsiveness

Wearing gloves, wet hands or a damp programming unit
impede the recognition of your touch and the execution
of the action you require.

In the MAIN MENU/COMMISSIONING menu, your contractor can set
the sensitivity to touch using the parameter TOUCH SENSITIVITY.

OPERATION

Operation

8 |WPF | WPF cool www.stiebel-eltron.com

Circular movement

Move one finger clockwise over the scroll wheel to move the high­lighter downwards or to the right in the list, depending on how
the menu options are arranged. An anti-clockwise rotation moves
the highlighter to the left or upwards in the list.

Alongside navigation within the menu structure, the scroll wheel
is used to set parameters. Clockwise rotation increases values.
Anti-clockwise rotation decreases values.

4.1.3 Keys

Note

Press the keys only briefly to initiate the required action.
If a key is touched for too long, the programming unit
does not respond.

MENU key

The MENU key has two functions:

- From the start screen, touch the MENU key to navigate to the
first of 5 menu structure levels.

- Touch the MENU key when within the menu structure to re­turn to the previous menu level.

OK key

The OK key has four functions:

- From the start screen, touch the OK key to activate the re­quired operating mode previously selected using the scroll
wheel.

- Within the menu structure, touching the OK key confirms the
selected menu option and takes you one menu level down.

- If you are already at parameter level, touching the OK key
saves the currently set parameter.

- At every menu level, you will see the entry BACK. If you se­lect BACK, you move a level higher in the menu.

If, for longer than five minutes, there is no user action, no rotation
or

MENU or OK are not pressed, the programming unit display

automatically jumps back to the start screen.

Parameter changes made before this which had not yet been con­firmed with OK are lost. The parameters retain the values saved
so far.

4.1.4 Contractor access

Note

Some menu options are protected by a code and can only
be viewed and adjusted by a qualified contractor.

4.2 Entering parameters

Parameters are changed by rotating the scroll wheel. To save the
new value, touch OK.

If you want to cancel the entry, touch

MENU. The parameter re-

tains the previously saved value.

Example 1

Adjusting the set room temperature.

+

21.7

-

MAIN

SET

°C SET ROOM TEMP COMFORT

26�04�01�0347

HEATING HC1

HEATING HC1

SET ROOM TEMP CO

21

To enter set temperatures, a number surrounded by a circle ap­pears on the display. This indicates that you can change the value
by turning the scroll wheel.

Example 2

Setting the time and date.

15.

09 08:23

Day Month Year Hour Minute

Jun

26�04�01�0296

MAIN

SET

GEN HC1

TIME HC1

TIME / DATE

13

On activation, the highlighter is over the position MONTH. Confirm
with OK. Set the current month with the scroll wheel and confirm
with OK. A calendar page is displayed. Move the highlighter to the
required day with the scroll wheel and confirm with OK. The new
value is saved when you confirm with OK. Set the year, hours and
minutes the same way.

OPERATION

Operation

www.stiebel-eltron.com WPF | WPF cool | 9

4.3 Selecting operating modes

If you enable the start screen, the current operating mode is
displayed. If you want to select another operating mode, turn
the scroll wheel. You run through the list of possible operating
modes. The current suggestion (list entry) is shown in the shaded
selection field.

Note

To change the appliance to this new operating mode,
confirm with OK.

WEDNESDAY 12 JUN 13 10:23 TIME

OUTSIDE TEMPERATURE

ACTUAL DHW TEMP

27.0 ° C

35.0 °C

28.0 °C

ACTUAL RETURN TEMP

26�04�01�0292

ECO MODE

Since you always navigate to a new operating mode from the
currently enabled one, you may have to turn anti-clockwise. All
operating modes, apart from DHW mode, apply to central heating
and DHW.

Standby mode

Frost protection is activated for heating and DHW mode. The set
DHW value is fixed at 10 °C, the set heating flow value is calculated
based on a set room value of 5 °C.

Application: During prolonged periods of absence, e.g. holidays.

Programming mode

Heating in line with the time switch program (applies to heating
circuits1 and2). Changeover between Comfort temperature and
ECO temperature.

DHW heating in line with the time switch program; changeover
between Comfort temperature and ECO temperature.

The remote control is only active in this operating mode.

Application: When DHW and central heating are required.

Comfort mode

The heating circuit (HC) is constantly held at the comfort tem­perature (HC1 and HC2). DHW heating according to time switch
program.

Application: Low energy houses without setback mode.

ECO mode

The heating circuit is constantly held at the ECO temperature (ap­plicable to HC1 and HC2). DHW heating according to time switch
program.

Application: During weekends away.

DHW mode

DHW heating is regulated by a time switch program. If a time
program is enabled, the water inside the DHW cylinder is heated
to the set comfort temperature. At all other times, the water is
heated to the set ECO temperature. Frost protection is activated
for heating operation.

Application: The heating season has ended; only DHW should be
provided (summer mode).

Emergency mode

In this operating mode, the heat pump is blocked. The BH stages
(electric booster stages) of the emergency/booster heater heat
according to the selected clock program for heating and DHW
operation.

 Inform your contractor immediately.

4.4 Picture symbols

At the lower edge of the display, symbols provide information
about the current appliance operating status.

Heating circuit pump: The pump symbol is displayed
when a heating circuit pump is running.

Mixer circuit pump: The mixer symbol is displayed
when a mixer circuit pump is running.

Heat-up program:

This symbol is displayed when the heat-up program runs.

Electric emergency/booster heater:

The electric emergency/booster heater has started. This
occurs, for example, when the outside temperature has
fallen below the dual mode point.

Central heating: The heating symbol is displayed when
the appliance is in heating mode.

DHW heating: This symbol tells you that the heat pump
is heating DHW.



Compressor: The symbol is displayed when the com-

pressor is running.

Summer mode: The symbol is displayed when the ap­pliance is in summer mode.



Cooling: The symbol is displayed when the appliance is

in cooling mode.

OPERATION

Menu structure

10 |WPF | WPF cool www.stiebel-eltron.com

5. Menu structure

After activating the programming unit, you can use the scroll
wheel to select other operating modes or the menu key to jump
to a level from which you can navigate to a specific appliance
parameter.

Level 1 Level 2

INFO SYSTEM

HEAT PUMP

DIAGNOSIS SYSTEM STATUS

HEAT PUMP STATUS
SYSTEM
INTERNAL CALCULATION
FAULT LIST
RELAY TEST SYSTEM

PROGRAMS HEATING PROGRAM

DHW PROGRAM
PARTY PROGRAM
HOLIDAY PROGRAM
HEAT-UP PROGRAM

SETTINGS GENERAL

HEATING
DHW
COOLING

COMMISSIONING ENTER CODE

LANGUAGE
SOURCE
HEATING
DHW
COMPRESSOR
EMERGENCY OPR
HEAT PUMP RESET
FAULT LIST RESET
SYSTEM RESET

5.1 INFO MENU

In the INFO menu you can check comparisons of set and actual
values for temperatures, flow rates and pressures of the heating
system and the heat pump.

Note

Please note that actual and set values can only be dis­played if the appropriate sensors are connected.

5.1.1 INFO SYSTEM

Level 3
Room temperatures

ACTUAL TEMPERATURE FE7
Actual room temperature for heating circuit 1 (HC1) or heating circuit
2 (HC2)
(will only be displayed if the FE7 remote control is connected)

°C

SET TEMPERATURE FE7
Set room temperature for heating circuit 1 or heating circuit 2
(will only be displayed if the FE7 remote control is connected)

°C

ACTUAL TEMPERATURE FEK
Actual room temperature for heating circuit 1 or heating circuit 2
(will only be displayed if the FEK remote control is connected)

°C

SET TEMPERATURE FEK
Set room temperature for heating circuit 1 or heating circuit 2
(will only be displayed if the FEK remote control is connected)

°C

REL HUMIDITY %
DEW POINT TEMPERATURE

Dew point temperature (will only be displayed if the FEK remote con­trol is connected)

°C

Heating

OUTSIDE TEMPERATURE °C
ACTUAL TEMPERATURE HC 1

Actual heating circuit temperature heating circuit 1

°C

SET TEMPERATURE HC 1
Set heating circuit temperature heating circuit 1 (HC1). Fixed temper­ature is displayed with set value control.

°C

ACTUAL TEMPERATURE HC 2
Actual heating circuit temperature heating circuit 2

°C

SET TEMPERATURE HC 2
Set heating circuit temperature heating circuit 2 (HC2). Fixed temper­ature is displayed with set value control.

°C

ACTUAL FLOW TEMPERATURE HP
Actual heat pump flow temperature

°C

ACTUAL FLOW TEMPERATURE BH
Actual flow temperature of electric emergency/booster heater

°C

ACTUAL RETURN TEMP °C
SET FIXED TEMPERATURE °C
ACTUAL BUFFER TEMPERATURE

Actual buffer cylinder temperature

°C

SET BUFFER TEMPERATURE
Set buffer cylinder temperature

°C

HEATING PR ES bar
FLOW R ATE l/min
SYST FROST PRO

System frost protection temperature

°C

DHW

ACTUAL TEMPERATURE
Actual DHW temperature

°C

SET TEMPERATURE
Set DHW temperature

°C

FLOW R ATE l/min

OPERATION

Menu structure

www.stiebel-eltron.com WPF | WPF cool | 11

Level 3
Cooling

ACTUAL TEMPERATURE FAN °C
SET TEMPERATURE FAN °C
ACTUAL TEMPERATURE AREA °C
SET TEMPERATURE AREA °C

Electric booster heater

DUAL MODE TEMP HEATING
Heating dual mode point

°C

APPLICATION LIMIT HEATING
Heating application limit

°C

DUAL MODE TEMP DHW
DHW dual mode point

°C

APPLICATION LIMIT DHW
DHW application limit

°C

Source

SOURCE TEMPERATURE °C
SOURCE TEMPERATURE MIN °C
SOURCE PRESSURE bar

5.1.2 INFO HEAT PUMP

Hinweis

The power consumption is calculated on the basis of re­frigerant circuit pressure. This calculation is inappropri­ate for billing purposes. Together with the amount of heat
it is used for a rough energy statement.

Level 3

Process data

HOT GAS TEMPERATURE
Compressor outlet temperature

°C

HIGH PRESSURE bar
LOW PRESSURE bar

Amount of heat

COMPRESSOR HEATING DAY
Compressor heat amount in heating mode since 00:00 h today in
kWh.

kWh

COMPRESSOR HEATING TOTAL
Total amount of compressor heat generated in heating mode in
MWh.

MWh

COMPRESSOR DHW DAY
Compressor heat amount in DHW mode since 00:00 h today in kWh.

kWh

COMPRESSOR DHW TOTAL
Total amount of compressor heat generated in DHW mode in MWh.

MWh

BH HEATING TOTAL
Total amount of heat generated by the electric emergency/booster
heater in heating mode in MWh.

MWh

BH DHW TOTAL
Total amount of heat generated by the electric emergency/booster
heater in DHW mode in MWh.

MWh

POWER CONSUMP TION

COMPRESSOR HEATING DAY
Electrical output of compressor in heating mode since 0:00 h today.

kWh

COMPRESSOR HEATING TOTAL
Total electrical output of compressor in heating mode.

MWh

COMPRESSOR DHW DAY
Electrical output of compressor in DHW mode since 0:00 h today.

kWh

COMPRESSOR DHW TOTAL
Total electrical output of compressor in DHW mode

MWh

Runtimes in hours
HEATING COMPRESSOR 1

Runtime of compressor 1 in heating mode.

Hours

DHW COMPRESSOR 1
Runtime of compressor 1 in DHW mode.

Hours

COOLING COMPRESSOR 1
Runtime of compressor 1 in cooling mode.

Hours

NHZ 1
Runtime of electric emergency/booster heater in booster stage 1.

Hours

NHZ 2
Runtime of electric emergency/booster heater in booster stage 2.

Hours

NHZ 1/2
Runtime of electric emergency/booster heater in booster stages 1
and 2.

Hours

STAR TS

COMPRESSOR

OPERATION

Menu structure

12 |WPF | WPF cool www.stiebel-eltron.com

5.2 DIAGNOSIS menu

For heating system and heat pump troubleshooting and analysis,
all important process data and bus subscribers can be queried
under DIAGNOSIS and a relay test can be carried out.

Note

The menu item RELAY TEST SYSTEM is protected by a
code and can only be accessed by a qualified contractor.

Level 2 Level 3

SYSTEM STATUS BUFFER CHARGING PUMP

DHW VALVE
HTG CIRC PUMP
MIXER PUMP
MIXER OPEN
MIXER CLOSED
SOURCE PUMP
COOLING MODE
POWER BLOCKED

HEAT PUMP STATUS REM IDLE TIME in minutes

COMPRESSOR
NHZ 1
NHZ 2

SYSTEM BUS SUBSCRIBER

HEAT PUMP TYPE

INTERNAL CALCULATION INTERVAL

LIVE STAGES

FAULT LIST see fault table

RELAY TEST SYSTEM BUFFER CHARGING PUMP

DHW VALVE
HTG CIRC PUMP
MIXER PUMP
MIXER OPEN
MIXER CLOSED
NHZ 1
NHZ 2
NHZ 3
SOURCE PUMP
COOLING MODE
DRAIN HYD MFG

5.2.1 Fault list

In the fault list, you receive an overview of the faults most recently
registered by the appliance. The fault list contains up to 20 fault
messages. The display, however, can show only 2. Turn the scroll
wheel to access the other entries in the fault list.

MAIN DIAG

FAULT LIST 1/1

01. SENSOR BREAK E 71

10:26 14.JUN 13

02. MIN SRCE TEMP

17:45 25.JUN 13

5.2.2 Fault message

If the appliance registers a fault, this is clearly displayed with the
message shown below.

COMFORT MODE

!

FAULT

SENSOR BREAK E 71

TUESDAY 14.JUN 13 16:27 TIME

If more than one fault occurs, the most recent one is shown con­tinuously. Please inform your contractor.

5.2.3 Relay test

You can control all relay outputs of the controller from here.

OPERATION

Menu structure

www.stiebel-eltron.com WPF | WPF cool | 13

5.3 PROGRAMS menu

Here you can set all times for heating, DHW, holiday and party
modes and you can also start the heat-up program.

Level 2 Level 3 Level 4

HEATING PROGRAM HEAT CIRCUIT 1

HEAT CIRCUIT 2

DHW PROGRAM

PARTY PROGRAM HOURS

HOLIDAY PROGRAM HOLS BEGINNING

HOLIDAYS ENDING

HEAT-UP PROGRAM ON / OFF LOW END TEMPERATURE

TEMP. RISE PERIOD
MAXIMUM TEMPERATURE
MAX TEMPERATURE DU-

RAT ION
RISE PER DAY

5.3.1 Heating program

In the menu item HEATING PROGRAM you can determine when
and how often the appliance heats to the set comfort values for
heating circuit1 and heating circuit2. At all other times, the appli­ance heats to the set ECO value. You can select the set values under
menu item SETTINGS/HEATING/HEATING CIRCUIT1 or SETTINGS/
HEATING/HEATING CIRCUIT2. There follows an explanation of how
to define a time program.

First, select the days on which you want to enable the HEATING
function:

+

-

26�04�01�0301

Monday

Mon

MAIN

PRO

HEAT

HEAT CIRCUIT 1

You can adjust your heating system as follows:

- For each individual day of the week (Monday - Sunday)

- Monday to Friday (Mo - Fr)

- Saturday and Sunday (Sa - Su)

- The whole week (Mo - Su)

Monday is initially offered.

 Turn the scroll wheel to select another day or group of days.
 Confirm your selection with OK.

You can now set three switching time pairs. The three switching
time pairs are shown on the display, to the right of the clock. A
switching times pair comprises the start time and end point at
which the appliance returns to its previous state.

07:00 - 20:00

- -:- - - - -:- -

- -:- - - - -:- -

26�04�01�0299

MONDAY

MAIN

PRO

HEAT

HEAT CIRCUIT 1

In this example, only one switching times pair has so far been
programmed. For switching times pairs 2 and 3, you can see short
dashes instead of times. These switching time pairs are still empty.
If you select one of the free switching time pairs with OK, you reach
the area where you can set the associated start and end times.
Press OK and the display shown below appears. Set the required
time with the scroll wheel.

END

- -:- -

- -:- -

H H

Start

26�04�01�0302

MAIN

PRO

HEAT

HEAT CIRCUIT 1

Times can be entered in intervals of 15 minutes. You can set 16:30
or 16:45, but not 16:37. Confirm your entry with OK.

Periods around midnight

Every Wednesday evening, heating mode should be enabled from
22:00 h for four hours. Thus the period does not expire until the
next day, Thursday, at 02:00 h. However, since the day ends at
00:00, two switching times are necessary for the required pro­gram. First, program the period 22:00 to 00:00 h for Wednesday,
then 00:00 to 02:00 h for Thursday.

5.3.2 DHW program

In the menu item DHW PROGRAM you can determine the times
during which DHW heating with the set comfort value should take
place. At all other times, DHW is heated to the set ECO value. You
can select the set values under menu item SETTINGS/DHW/DHW
TEMPERATURES.

You can adjust your DHW heating as follows:

- For each individual day of the week (Monday - Sunday)

- Monday to Friday (Mo - Fr)

- Saturday and Sunday (Sa - Su)

- The whole week (Mo - Su)

You can set three switching time pairs for each of these options.

Exception: If you want to heat DHW from 22:00 h until 06:00 h the
following day you will need two switching time pairs.

OPERATION

Menu structure

14 |WPF | WPF cool www.stiebel-eltron.com

Example:

You would like to heat DHW twice daily, i.e. from 22:00 h until
06:00 h the following day, and then from 08:00 h until 09:00 h.

As the day begins at 00:00 h; you have to begin programming at
00:00 h also for this example.

- The first switching time pair runs from 00:00 h until 06:00 h.

- The second switching time pair runs from 08:00 h until 09:00
h.

- The third switching time pair runs from 22:00 h until 24:00 h.

5.3.3 Party program

In the party program you can extend the comfort mode by a few
hours for heating.

5.3.4 Holiday program

In the holiday program, the heat pump system runs in ECO mode,
and frost protection for DHW heating is enabled.

For both the start and end of the holiday, enter the year, month
and day. The start time is 00:00 h on the first day of the holiday.
The end time is 24:00 h on the day the holiday ends. After the
holiday period has expired, the heat pump system switches back
to the previous heating and DHW program.

5.3.5 Heat-up program

Note

The HEAT-UP PROGRAM menu item is protected by a
code and can only be accessed and set by a qualified
contractor.

Heat-up program for underfloor heating systems

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:

The heat-up program / screed drying must be carried out via the
emergency/booster heater. Never use the heat pump to perform
screed drying as this would place too high a demand on the heat
source and could damage it.

If you use the heat-up program, input the following settings at
the heat pump manager:

First set parameter “LOWER APP LIMIT HZG” to 30°C.

There are a total of 6 parameters that serve to determine the tem­peratures and periods for the heat-up program. These 6 parame­ters can be adjusted in sequence as soon as the heat-up program
is activated. The program is started with the HEAT-UP PROGRAM
parameter and the setting ON. Please note that depending on the
system temperature it may take some time to reach the required
low end temperature.

The low end temperature (parameter LOW END TEMPERATURE)
is held for the selected time (parameter DURATION BASE TEMP).
After expiry of this period, the system heats to the maximum low
end temperature (parameter MAXIMUMTEMPERATURE) using
an increase K/day (parameter RISEPERDAY) and holds this max­imum temperature for the selected time (parameter MAXTEM-

PERATURE DURATION). The system subsequently returns to the
low end temperature using the same steps as for heat-up.

1

7

4 5

3

2

84�03�01�0038

6

Y Temperature
X Time
1 Maximum temperature
2 Low end temperature
3 Low end temperature duration
4 Increase K/day
5 Max temperature duration
6 Start
7 End

If a heating buffer cylinder has been integrated into the system,
the temperature in the buffer cylinder is controlled solely via the
return sensor (fitted at the base of the buffer cylinder). 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 2 heating circuits are operational (second heating circuit is for
underfloor heating system), the mixer in heating circuit 2 regulates
down to the selected set values.

During the heat-up program the appliance often reaches maxi­mum output. For this reason, energy consumption and noise levels
are comparatively high during screed drying.

After the heat-up process all modified parameters must be reset
to their standard values or system values.

Emergency operation is not possible while the heat-up program
is active.

OPERATION

Menu structure

www.stiebel-eltron.com WPF | WPF cool | 15

5.4 Settings menu

Here you can select all system-specific parameters for heating, cooling and DHW modes as well as general settings such as the time.

Note

Some menu options are protected by a code and can only be viewed and adjusted by a qualified contractor.

Level 2 Level 3 Level 4 Level 5

GENERAL TIME / DATE TIME

YEAR
MONTH
DAY

SETTING SUMMER TIME DAY BEGINNING

DAY ENDING

CONTRAST

BRIGHTNESS

TOUCH SENSITIVITY

TOUCH ACCELERATION

HEATING HEAT CIRCUIT 1 COMFORT TEMPERATURE

ECO TEMPERATURE
MINIMUM TEMPERATURE
HEATING CURVE RISE
HEATING CURVE VIEW

HEAT CIRCUIT 2 COMFORT TEMPERATURE

ECO TEMPERATURE
MINIMUM TEMPERATURE
MAXIMUM TEMPERATURE
MIXER DYNAMICS
HEATING CURVE RISE
HEATING CURVE VIEW

STANDARD SETTINGS BUFFER OPERAT

SUMMER MODE OUTSIDE TEMPERATURE

BUILDING HEAT BUFFER
MAXIMUM RETURN TEMP
MAXIMUM FLOW TEMP
FIXED VALUE OPERATION
HEATING CIRCUIT OPTIMAL
FROST PROTECT

REMOTE CONTROL FE7 HEATING CIRC PRESELECTION

ROOM INFLUENCE
ROOM CORRECTION

PUMPCYCLES ON / OFF

ELECTRIC REHEATING DUAL MODE TEMP HEATING

LOWER APP LIMIT HEATING

DHW DHW TEMPERATURES COMFORT TEMPERATURE

ECO TEMPERATURE

STANDARD SETTINGS DHW HYSTERESIS

DHW LEARNING FUNCTION
DHW CORRECTION
COMBI CYLINDER

PASTEURISATION ON / OFF

OPERATION

Menu structure

16 |WPF | WPF cool www.stiebel-eltron.com

ELECTRIC REHEATING DUAL MODE TEMP DHW

LOWER APP LIMIT DHW

COOLING COOLING ON / OFF

COOLING MODE PASSIVE COOLING / ACTIVE COOLING

ACTIVE COOLING AREA COOLING SET FLOW TEMPERATURE

FLOW TEMP HYSTERESIS
SET ROOM TEMPERATURE
DYNAMIC

FAN COOLING SET FLOW TEMPERATURE

FLOW TEMP HYSTERESIS
SET ROOM TEMPERATURE
DYNAMIC

PASSIV E COOLING AREA COOLING SET FLOW TEMPERATURE

FLOW TEMP HYSTERESIS
SET ROOM TEMPERATURE

FAN COOLING SET FLOW TEMPERATURE

FLOW TEMP HYSTERESIS
SET ROOM TEMPERATURE

5.4.1 General

Time / Date

Here you can set the time, year, month and day.

Setting Summer time

Here you can select summer time.

At the factory, summer time is set to begin on 25March and to
end on 25October.

Contrast

Here you can set the display contrast.

Brightness

Here you can set the display brightness.

Touch sensitivity and Touch acceleration

A code is required for this adjustment.

5.4.2 Heating

Heating circuit 1 and heating circuit 2

COMFORT TEMPERATURE and ECO TEMPERATURE

Here you can select the set room temperatures for Comfort mode
and ECO mode as well as the heating curve rise for heating circuit1
and heating circuit2.

Changing the set room temperature results in a parallel shift of
the heating curve.

The actual room temperature can also be scanned, as soon as the
FE7 remote control has been connected and allocated to heating
circuit 1.

The actual room temperature can also be scanned, as soon as the
FE7 or FEK remote control has been connected and allocated to
heating circuit2.

The display HEAT CIRCUIT2 only appears if the mixer flow sensor
for heating circuit2 has been connected.MINIMUM TEMPERATURE

The set MINIMUM TEMPERATURE is safeguarded by the heating
circuit controller and will never be undershot.

MAXIMUM MIXER TEMPERATURE

Setting range 20 °C to 90°C.

This setting limits the flow temperature of the mixer circuit. For
example, if a higher set flow temperature is calculated from the
mixer circuit data, the max. set mixer flow temperature will be
used to control and regulate to this value.

OPERATION

Menu structure

www.stiebel-eltron.com WPF | WPF cool | 17

MIXER DYNAMICS

Mixer runtime

Setting range 60 to 240

You can use this setting to adapt the mixer characteristics. The
setting 60 to 240 means 6 K to 24 K control deviation.

The scan rate is 10 s and the minimum on time for the mixer is

0.5 s. The mixer does not respond in the dead zone of ±1 K from
the set value.

Example for the setting 100 = 10 K

The control deviation (set mixer temperature – actual mixer tem­perature) is 5K. The mixer opens for 5 s, then pauses for 5 s and
starts again.

The control deviation (set mixer temperature – actual mixer tem­perature) is 7.5 K. The mixer opens for 7.5 s, then pauses for 2.5
s and starts again.

The smaller the control deviation, the shorter the mixer on time
and the longer the pauses.

A reduction of the MIXER DYNAMIC value with the control devi­ation unchanged increases the on duration and reduces pauses.

Example for setting 100 and a current control deviation of 5 K.

5 K of 10 K = 50% = on duration

Example: Control deviation

± 1 K

4

3

26�03�01�1067

1

2

1 Setting 100 = control deviation 10 K
2 Control deviation 5 K
3 Control deviation in K
4 On time in %

Heating curve rise

The menu item HEATING CURVE RISE enables you to adjust one
heating curve each for heating circuits1 and 2.

Note: Your contractor will have set a building and system-specific
optimum heating curve for every heating circuit. It relates to the
heat pump return temperature for heating circuit 1 and to the
mixer flow temperature for heating circuit 2.

When adjusting the heating curve on the heat pump manager, the
calculated set return or flow temperature, subject to the outside

temperature and the set room temperature, will be shown at the
top of the display.

As soon as you have preselected a temperature in menu SETTINGS
/ HEATING / STANDARD SETTING under parameter FIXED VALUE
OPERATION, heating curve 1 is hidden from view and the display
showsSETFIXED TEMPERATURE with the relevant temperature.

Heating curve

Adjustment of programmed changeover between Comfort and
ECO mode

The figure shows the diagram with the set heating curve relating
to a set room temperature for Comfort mode. The second, dashed
line in the display relates to a set room temperature for ECO mode.

60

40

20

0

1
2

20 15 10 5 0 -5 -10 -15 -20

26�03�01�1915

Y Return/flow temperature [°C]
X Outside temperature [°C]
1 Comfort mode
2 ECO mode

Adapting a heating curve

Example:

During spring and autumn, the temperature of a building's heating
system is too low at an outside temperature between 5 °C and
15°C, despite open radiator valves, but is OK at outside tempera­tures of ≤ 0°C. This problem can be remedied with a parallel shift
and a simultaneous reduction of the heating curve.

Prior to this adjustment, heating curve 1.0 was adjusted, relative
to a set room temperature of 20 °C. The dotted line indicates the
modified heating curve at 0.83 and a modified set room temper­ature of 23.2 °C.

60

40

20

0

20 15 10 5 0 -5 -10 -15 -20

26�03�01�1916+

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

OPERATION

Menu structure

18 |WPF | WPF cool www.stiebel-eltron.com

Standard setting

Buffer operation

When using a buffer cylinder, set this parameter to ON.

Summer mode

The SUMMER MODE parameter can be used to define the point at
which the heating system is to switch to summer mode. Summer
mode can be switched ON or OFF. This function offers 2 adjustable
parameters.

- OUTSIDE TEMP parameter:

Available outside temperature 10 °C to 30 °C

- BUILDING HEAT BUFFER parameter

This parameter lets you choose whether an average outside tem­perature should be determined, according to the type of building.

You can select from 3 settings.

Setting "1": Minor insulation of the outside temperature (averaging
over a 24 h period), forexample timber construction with rapid
heat transfer.

Setting "2": Moderate insulation of the outside temperature (av­eraging over a 48 h period), for example solid construction with
thermal insulation and average heat transfer.

Setting "3": Heavy insulation (averaging over a 72 h period) of the
outside temperature. House with slow heat transfer.

Both heating circuits (if installed) enter summer mode if the de­termined outside temperature is ≥ than the selected outside tem­perature; reverse hysteresis –1 K.

With fixed-value control, summer mode is disabled for heating
circuit 1.

Maximum return temperature

Setting range 20 °C to 60 °C.

The heat pump is switched OFF immediately if the temperature
at the return sensor reaches this value during heating operation.
This safety function prevents the high pressure switch from re­sponding. No fault message is issued when this value is reached.

During DHW operation the return temperature is not scanned.

Maximum flow temperature

Maximum heat pump flow temperature for central heating

Setting range 20 °C to 65 °C.

This setting limits the flow temperature of the heat pump and the
electric emergency/booster heater in heating mode.

Fixed value operation

The heat pump return is regulated to the set fixed value. The
switching time program will then be ignored. The various posi­tions of the program selector will then only affect the mixer circuit
(if installed). The frost protection is activated and the compressor
is switched OFF when the program selector is set to standby and
a fixed temperature has been selected. Summer logic remains
disabled with fixed temperature control. This means that the heat­ing circuit pump is not switched off for the direct heating circuit.

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 initial value.

The parameter HEATING CIRCUIT OPTIMAL is only displayed when
the parameter BUFFER OPERAT 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 only be set to ON when an Uponor DEM WP
module is connected.

This function is only active in Comfort mode, ECO mode and Pro­grammed operation.

Frost protection

To protect the heating system from frost, the heating circuit pumps
are started at the selected frost protection temperature; the re­verse hysteresis is 1 K.

Remote control FE7

This menu item is only displayed when the FE7 remote control is
connected.

Heating circuit preselection

Remote control FE7 can be selected for both heating circuits.

This parameter lets you choose on which heating circuit the re­mote control is to act. Depending on the remote control prese­lection, you can query the actual room temperature under INFO/
SYSTEM/ROOM TEMPERATURE.

Room influence

Standard setting 5, adjustable from ---- via 0 to 20 Dashes (----)
in the display:

With the FE7 remote control connected, the room temperature
sensor only serves to record and display the actual room temper­ature; it has no influence on the actual control. Only in automatic
mode can the room temperature for heating circuit 1 or 2 be
adjusted by ± 5 °C. This set value adjustment applies to the then
current heating time, not to the setback time.

At the same time, setting "0 to 20" serves to control the room tem­perature-dependent night setback. This means that the heating
circuit pump is switched off at the point of changeover from the
heating into the setback phase. It remains off, until the actual room
temperature falls below the set room temperature. After this, the
system continues to regulate in weather-compensated mode.

If you want the room temperature to be taken into account, set
the room temperature sensor influence to > 0. The room sensor
influence has the same effect as the outside temperature sensor
has on the return temperature, except that the effect is 1 to 20
times greater, depending on the factor set.

OPERATION

Menu structure

www.stiebel-eltron.com WPF | WPF cool | 19

- Room temperature-dependent return/flow temperature

with weather compensation

With this type of control, a control cascade is formed from a re­turn/flow temperature control that is subject to both weather and
room temperature. This means that the weather-compensated
return/flow temperature control sets a default return/flow tem­perature that is corrected by the overriding room temperature
control in accordance with the following formula:

∆ϕ

R

= (ϕ

RSOLL

− ϕ

RIST

) * S * K

Because a substantial proportion of the control is already han­dled by the weather-compensated control, the room temperature
sensor compensation factor K can be set lower than with pure
room temperature control (K=20). The figure indicates the control
method with the set factor K=10 (room influence) and a heating
curve S=1.2.

- Room temperature control with weather-compensation

This type of control offers two significant benefits:

Incorrectly set heating curves are corrected by the room sensor in­fluence K; whilst the smaller factor K provides more stable control.

However, observe the following for all control units with room
temperature sensor influence:

- The room temperature sensor must capture the room tem­perature accurately.

- Open doors and windows greatly affect the control result.

- All radiator valves in the lead room must be fully open at all
times.

- The temperature inside the lead room affects the entire heat­ing circuit.

If you want the room temperature to be taken into account, set
the room temperature sensor influence to > 0.

20

30

40

20

50

60

70

80

90

1917 18 21 22 23 24 25

0

10

0

20

-20

15

10

5

-5

-10

-15

Y

X 1

Y

X 2

1

1

1

2

3

4

5

26�03�01�1917

Y Flow temperature [°C]
X1 Room temperature [°C]
X2 Outside temperature [°C]
1 Room temperature sensor influence at K = 10 and S = 1.2

and control deviation +/- 2 K
2 Heating curve S = 1.2
3 Weather-compensated set flow temperature at ϕA =

- 10°C
4 Weather-compensated set flow temperature at ϕA = 0 °C
5 Weather-compensated set flow temperature at ϕA = +

10°C

Room correction

This parameter enables the calibration of the actual room tem­perature.

Pump cycles

- Heating circuit pump control

The PUMPCYCLES parameter only applies to the direct heating
circuit 1, i.e. for heating circuit pump 1.

This parameter can be set ON or OFF. In the OFF setting, the heat­ing circuit pump will not cycle. It will operate constantly. It is only
switched off in summer mode.

As soon as this parameter is set to ON, the heating circuit pump
will be switched in line with a fixed temperature curve for the
outside temperature.

The heating circuit pump start pulse is always 5minutes.

The heating circuit pump for heating circuit 1 always starts with
each heat pump start. The pump runs on for 5 minutes after the
heat pump has been shut down. Now the start-up duration takes
effect, for example at an outside temperature of 5 °C, the pump
starts 3 times per hour for 5 minutes each time.

0 10 20 30 40 50 60

< -10

-10

-5

0

5

10

Y

2

1

84�03�01�0039

Y Outside temperature in °C
X Time in minutes
1 Pause
2 Pump run time

- Pump kick

To prevent the pumps seizing up, over summer for example, the
pumps are switched on for 10 seconds after every 24 hour period
of inactivity. This applies to all pumps.

OPERATION

Menu structure

20 |WPF | WPF cool www.stiebel-eltron.com

- Heating circuit pump control with connected remote

control FE7 / FEK

In conjunction with the FE7 or FEK remote control, in accordance
with the switching condition

ϕ

ACTUAL room

>ϕ

SET room

+ 1K

the respective heating circuit pump is switched off and the mixer
moves to CLOSE. This only applies if the room sensor influence is
set to K > 0. Reverse switching is subject to the following condition:

ϕ

ACTUAL room

>ϕ

SET room

The summer mode also becomes effective for the respective heat­ing circuit when operating with a FE7 or FEK remote control.

Electric booster heater

Lower app limit HTG

Heat pump application limit

The heat pump is switched off if the outside temperature drops
below the selected lower application limit for heating.

The electric emergency/booster heater alone provides central
heating.

Dual mode temp HEATING

The dual mode temperature of the heat pump for heating oper­ation

Below this outside temperature, the electric emergency/booster
heater is switched on for heating operation, subject to load.

5.4.3 DHW

DHW temperatures

COMFORT TEMPERATURE and ECO TEMPERATURE

Here you can select the set DHW temperatures for Comfort and
ECO mode.

Standard settings

DHW hysteresis

This determines the switching hysteresis for DHW operation.

- Starting DHW heating at the set DHW temperature minus the
hysteresis value.

DHW learning function

Setting OFF

When heating DHW, the system automatically adjusts itself to the
required DHW temperature (self-learning function).

The electric emergency/booster heater will be added as a booster
stage as soon as the heat pump is shut down in DHW mode via
the HP sensor or via the hot gas temperature limit (130 °C). If the
flow temperature of 70°C is achieved in this operating mode,
DHW heating will be terminated, and the set DHW temperature is
overwritten with the actual DHW temperature.

Setting ON

As soon as the heat pump is shut down in DHW mode via the HP
sensor or the hot gas temperature limit (130 °C), DHW heating is
terminated and the set DHW temperature will be overwritten with
the current actual DHW temperature. This operating mode saves
energy, as DHW is exclusively heated by heat pump.

DHW correction

The DHW temperature is measured in the bottom third of the
cylinder. The DHW outlet temperature is approx.3K higher than
the measured temperature. This deviation is corrected and can be
calibrated if necessary.

Combi cylinder

As soon as the parameter is set to ON, the heating circuit pumps
are switched off during DHW heating.

(Only in conjunction with the instantaneous water cylinder SBS)

Pasteurisation

The DHW cylinder is heated daily at 01:00 h to 60 °C if pasteurisa­tion has been enabled. Pasteurisation only takes place when the
emergency/booster heater is connected.

Electric booster heater

Dual mode temp DHW

The dual mode temperature of the heat pump for DHW heating.

Below this outside temperature, the electric emergency/booster
heater is switched on for DHW heating, subject to load.

Lower app limit DHW

Lower application limit for the heat pump for DHW heating.

The heat pump is switched off at outside temperatures below the
selected lower DHW application limit.

The electric emergency/booster heater alone provides DHW heat­ing.

OPERATION

Menu structure

www.stiebel-eltron.com WPF | WPF cool | 21

5.4.4 COOLING

!

Appliance and system damage

The WPF cool is only suitable for passive cooling. Active
cooling with the WPF cool will lead to appliance damage.
The WPF can be used for active and passive cooling. This,
however, is only possible in conjunction with a suitable
hydraulic circuit.
In the delivered condition, the COOLING parameter is set
to OFF.

!

Appliance and system damage

The WPF...S is not suitable for cooling.

Cooling

On / OFF

Cooling mode

Passive cooling / active cooling

Active cooling

Area cooling

- Flow temperature

- Flow temp. hysteresis

- Set room temperature

- Dynamic

Fan cooling

- Flow temperature

- Flow temp. hysteresis

- Set room temperature

- Dynamic

Passive cooling

Area cooling

- Flow temperature

- Flow temp. hysteresis

- Set room temperature

Fan cooling

- Flow temperature

- Flow temp. hysteresis

- Set room temperature

Note

The COOLING parameter will only be shown if an FEK or
FE7 remote control is connected. Cooling mode is only
possible in summer mode.

The WPF with a suitable circuit cools in 2 stages:

Stage 1 (source pump)

Heat is extracted from the heating circuit and is passed to the
heat source system.

Stage 2 (source pump + compressor)

In addition, the refrigerant circuit extracts heat from the heating
circuit and transfers it to the heat source system.

DHW heating

DHW heating always has priority. As long as the actual tempera­ture has not dropped below the set flow or room temperature, ac­tive cooling continues even during DHW heating, and any extracted
heat is transferred to the DHW. If there is no cooling demand, DHW
is conventionally heated via the heat source system.

Cooling mode with the FE 7

The FE7 is not equipped with dew point monitoring. It can there­fore only be used in conjunction with fan convectors with conden­sate drain. Set COOLING MODE parameter to FAN.

Cooling mode with the FEK

The FEK remote control is equipped with dew point monitoring,
and can therefore be used with area heating systems (e.g. un­derfloor/wall heating systems, etc.). Set parameter COOLING to
AREA COOLING. The set flow temperature is compared with the
captured dew point temperature, so the actual temperature never
drops below the dew point. When using fan convectors with the
FEK remote control, set the COOLING parameter to FAN COOLING.

The following settings for the FE 7 and the FEK can be selected for
Cooling mode in parameterCOOLING:

- Room temperature
Cooling mode starts when the selected room temperature is
exceeded (output COOLING=230 V).
Cooling mode is stopped, if the actual room temperature
drops 2K below its set temperature. (output COOLING=0 V)

- Flow temperature and hysteresis
Cooling mode is regulated via the selected flow temperature.
The brine pump starts at:
[Flow temperature + hysteresis]
Brine pump off when the actual temperature drops below the
flow temperature.
The [flow temperature+hysteresis] should be at least 3 K <
room temperature. Lower flow temperatures cause a more
rapid cooling of the room.
As soon as, with setting AREA COOLING, the determined dew
point temperature is + 2 K higher than the selected flow tem­perature, that temperature will be overridden with the dew
point temperature and acts as control variable. The brine
pump starts at [entered or newly determined flow temp. +
hysteresis].
The source pump stops and Cooling mode terminates, if the
actual flow temperature lies below the entered or newly
determined flow temperature. The cooling signal remains
active.

- Dynamic
The Dynamic can be adjusted from 1 to 10. It describes the
delay and changeover between passive cooling and active
cooling, whereby active cooling is started sooner, the smaller
the value.

OPERATION

Maintenance and care

22 |WPF | WPF cool www.stiebel-eltron.com

6. Maintenance and care

!

Appliance and system damage

Maintenance work, such as checking the electrical safety,
must only be carried out by a qualified contractor.

A damp cloth is sufficient for cleaning all plastic and sheet metal
parts. Never use abrasive or corrosive cleaning agents.

We recommend an annual inspection (to establish the current con­dition of the system), and maintenance by a qualified contractor if
required (to return the system to its original condition).

7. Troubleshooting

Fault Cause Remedy

There is no hot water or
the heating system stays
cold.

The fuse/MCB has blown/
responded.

Check the fuse/MCB in
your fuse box/distribu­tion panel.

7.1 Other problems

If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate. The type plate is located at the front
top, on the right or left hand side of the casing.

Sample type plate

Montageanweisung beachten! Dichtheit geprüft!

Made in Germany

*xxxxxxxxxxxxxxxxxx*

1

26�03�01�1570

1 Number on the type plate

www.stiebel-eltron.com WPF | WPF cool | 23

INSTALLATION

Safety

INSTALLATION

8. Safety

Only a qualified contractor should carry out installation, commis­sioning, maintenance and repair of the appliance.

8.1 General safety instructions

We guarantee trouble-free function and operational reliability only
if original accessories and spare parts intended for the appliance
are used.

8.2 Instructions, standards and regulations

Note

Observe all applicable national and regional regulations
and instructions.

9. Appliance description

9.1 Mode of operation

The heat exchanger on the heat source side (evaporator) extracts
natural heat from the heat source. Any energy extracted is trans­ferred, together with the energy drawn by the compressor drive,
to the heating water by a heat exchanger on the heating water
side (condenser). Subject to the heat load, the heating water is
heated up to + 65°C.

The electric emergency/booster heater starts if the high pressure
sensor or the hot gas limiter responds during DHW heating. In
addition it covers any residual heat demand, if the heating system
demand exceeds the heat pump output.

9.2 Special features of the WPF...cool

For cooling, the brine is pumped, via a further three-way valve
through a second heat exchanger, where the energy is extracted
from the heating water.

9.3 Standard delivery

The following are delivered with the appliance:

- 1 outside temperature sensor AFS2

- 1 immersion sensor TF6

- 6 push-fit connectors 28) mm

9.4 Accessories

- Brine charging unit WPSF

- Water softener fitting HZEA

- Filter assembly 22 mm (FS-WP 22)

- Filter assembly 28 mm (FS-WP 28)

- Remote control FE 7

- Remote control FEK

10. Preparations

Note

The appliance is designed for internal installation, except
in wet areas.

 Never install the appliance directly below or next to

bedrooms.

 Protect pipe transitions through walls and ceilings with an-

ti-vibration insulation.

The room in which the appliance is to be installed must meet the
following conditions:

- No risk from frost.

- The room must not be subject to a risk of explosions arising
from dust, gases or vapours.

- When installing the appliance in a boiler room together with
other heating equipment, ensure that the operation of other
heating equipment will not be impaired.

- The volume of the installation room should be at least

13.8m³.

- Load-bearing floor (for the weight of the internal unit, see
chapter “Specification / Data table”).

 For installation on floating screeds, make provisions for quiet

heat pump operation.

 Isolate the mounting surface around the heat pump by re-

cesses. After completing the installation, seal these recesses
with a water-impervious and sound insulating material, such
as silicone for example.

1 2 3 54

26�03�01�1466

1 Concrete base
2 Impact sound insulation
3 Floating screed
4 Floor covering
5 Recess

24 |WPF | WPF cool www.stiebel-eltron.com

INSTALLATION

Preparations

10.4.1 Minimum clearances

≥500

≥50

≥500

≥500

≥1000

D0000034469

 Maintain the minimum clearances to ensure trouble-free op-

eration of the appliance and facilitate maintenance work.

10.1 Electrical installation

DANGER Electrocution
Carry out all electrical connection and installation work
in accordance with national and regional regulations.

DANGER Electrocution
Only use a permanent connection to the power supply.
Ensure that the appliance can be separated from the
power supply by an isolator that disconnects all poles
with at least 3mm contact separation. This requirement
can be met with contactors, circuit breakers, fuses, etc.

Note

The specified voltage must match the mains voltage. Ob­serve the type plate.

Install cables with the following cross-sections in accordance with
the respective fuse rating:

Fuse/MCB
rating

Assignment Cable cross-section

C 16 A Compressor

(three phase)

2.5 mm²

B 16 A

Electric emergency/
booster heater (BH)
(three phase)

2.5 mm²

1.5 mm² with only two live cores and
routing on a wall or in an electrical con­duit on a wall.

C 16 A

Compressor
WPF 05 S / 07 S
(single phase)

1.5 mm² for open routing. Note the type
of routing!

2.5 mm² for routing through a
wall. Note the type of routing!

C 25 A

Compressor
WPF 10 S / 13 S
(single phase)

4.0 mm² for open routing. Note the type
of routing!

6.0 mm² for routing through a
wall. Note the type of routing!

B 16 A

Electric emergency/
booster heater (BH)
(single phase)

2.5 mm² for routing through a
wall. Note the type of routing!

1.5 mm² when routing a multi core line
on a wall or in an electrical conduit on
a wall.

B 16 A Control unit 1.5 mm²

The electrical data is provided in the chapter "Specification / Data
table".

!

Material losses

Provide separate fuses/MCBs for the two power circuits
of the compressor and the electricemergency/booster
heater.