STIEBEL ELTRON WPM 3 Instruction Manual

OPERATION AND INSTALLATION
Heat pump manager
» WPM 3
MITTWOCH 12.JUN 13 10:23 UHR
AUSSENTEMPERATUR
WW-ISTTEMPERATUR
27,0 °C
35,0 °C
28,0 °C
RÜCKLAUFISTTEMPERATUR
ECO-BETRIEB

2| WPM 3 www.stiebel-eltron.com
CONTENTS
OPERATION
1. General information _________________________________________3
1.1 Safety instructions����������������������������������������������� 3
1.2 Other symbols in this documentation ����������������������� 3
1.3 Units of measurement ������������������������������������������ 3
2. Safety__________________________________________________________3
2.1 Intended use������������������������������������������������������ 3
2.2 Safety instructions����������������������������������������������� 3
2.3 Test symbols ������������������������������������������������������ 3
3. Appliance description _______________________________________4
3.1 Heat pump types������������������������������������������������� 4
3.2 Accessories�������������������������������������������������������� 5
4. Operation _____________________________________________________6
4.1 Controls������������������������������������������������������������ 6
4.2 Entering parameters �������������������������������������������� 7
4.3 Selecting operating modes ������������������������������������ 8
4.4 Picture symbols �������������������������������������������������� 9
5. Menu structure _______________________________________________9
5.1 INFO menu ������������������������������������������������������� 10
5.2 DIAGNOSIS menu ����������������������������������������������� 12
5.3 PROGRAMS menu ���������������������������������������������� 13
5.4 SETTINGS menu������������������������������������������������� 16
6. Fault message ______________________________________________ 27
7. Maintenance and care _____________________________________ 27
INSTALLATION
8. Safety________________________________________________________ 28
8.1 General safety instructions ����������������������������������� 28
8.2 Instructions, standards and regulations ������������������� 28
9. Standard delivery __________________________________________ 28
9.1 WPMW 3 (wall mounting)������������������������������������� 28
9.2 WPMS 3 (control panel mounting) �������������������������� 28
10. Installation__________________________________________________ 28
10.1 Wall mounting WPMW 3���������������������������������������28
10.2 Control panel mounting WPMS 3���������������������������� 28
10.3 Programming unit ���������������������������������������������� 28
10.4 Electrical connection������������������������������������������� 30
10.5 Sensor installation���������������������������������������������� 33
10.6 FE7 remote control ��������������������������������������������� 34
10.7 FEK remote control ��������������������������������������������� 34
10.8 Internet Service Gateway ISG �������������������������������� 35
11. Commissioning _____________________________________________ 35
11.1 COMMISSIONING menu���������������������������������������� 36
11.2 Setting parameters���������������������������������������������40
12. Settings _____________________________________________________ 44
12.1 Standard settings �����������������������������������������������44
12.2 Settings made ���������������������������������������������������44
12.3 Appliance handover ��������������������������������������������44
13. Troubleshooting ____________________________________________ 45
13.1 Fault display ����������������������������������������������������� 45
13.2 Fault list ����������������������������������������������������������46
13.3 Fault message – sensor break ������������������������������� 53
13.4 Heat pump-specific or hardware faults �������������������� 53
14. Specification ________________________________________________ 54
14.1 Details on energy consumption������������������������������ 54
14.2 Data table ��������������������������������������������������������54
GUARANTEE
ENVIRONMENT AND RECYCLING

OPERATION
General information
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OPERATION
1. General information
The chapter "Operation" is intended for appliance users and qual-
ified contractors.
The chapter "Installation" is intended for qualified contractors.
Note
Read these instructions carefully before using the appli-
ance and retain them for future reference.
Pass on the instructions to a 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
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 damage, consequential losses and environmen-
tal 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 oth-
erwise.
2. Safety
2.1 Intended use
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-do-
mestic 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 inappropri-
ate. 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 cir-
cuit must only be carried out by a recognised, qualified con-
tractor or by our customer support 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 capa-
bilities 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 pro-
tected by a code to prevent unintentional modifications.
The parameters that serve to adapt the appliance to your
personal requirements are not protected by a code.
2.3 Test symbols
See type plate on the appliance.
!
!

OPERATION
Appliance description
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3. Appliance description
The second generation heat pump manager, also referred to as
WPM3, is responsible for the processes that control and regulate
all our heat pumps.
Connected heat pumps are controlled via the digital BUS connec-
tion that handles the bi-directional data exchange
Cascade control
Up to 6output stages can be controlled for heat generation.
The maximum permitted configuration for cascade control is sub-
ject to the type of heat pump you are using.
- 6 single compressor heat pumps
- 3 dual compressor heat pumps with identical compressors
- From the third connected heat pump upwards, an MSM must
be used to control the buffer charging pumps
Function overview
- The 4-wire data BUS enables rapid installation and system
extension using the MSM mixer module
- Control of a second heat source for DHW and heating
- 9 temperature inputs as set/actual value display
- Demand-dependent control of 7 different circulation pumps
- Input of the system and heat pump frost protection limits
- At least 10 h power reserve for the clock
- Automatic pump kick control
- Reset option
- Stored fault list with precise fault code indication on the dis-
play, including date and time
- Fast and precise fault diagnosis with system analysis, incl.
temperature scanning of heat pump and peripherals without
additional equipment.
- Default settings for time switch programs for all heating and
DHW circuits
- Solar differential controller
3.1 Heat pump types
Note
Heat pump type 5/5* cannot be connected directly to the heat pump manager.
 Use an indoor unit with integral WPM 3 heat pump manager for these heat pumps.
The description of individual functions varies between the different heat pump types. The types of heat pump are therefore identified
in this document as HP type 1 to 5 and 1* to 5*.
Heat pumps with second internal heat source
HP type 1 HP type 2 HP type 3 HP type 4 HP type 5
WPL 13, 18, 23 cool WPL 10 A / I / IK WPL 15 A(C)S WPL 33 HT WPL 08, 12, 16 S Trend
WPL 13, 18, 23 E WPL 33 WPL 20 A(C) WPL 33, HT (S) WPL 22, 28 Trend
WPL 13, 20 basic WPL 25 A(S)
WPL 13, 20 A basic WPL 25 AC(S)
WPL 13, 18 S basic WPL 07, 09, 17 ACS classic
WPL 10 AC WPL 19 I(K), WPL 24 I(K)
WPL 10 ACS
Heat pumps with second external heat source
HP type 1* HP type 2* HP type 3* HP type 4* HP type 5*
WPL 13, 18, 23 cool WPF-M 10, 13, 16 WPL 15 A(C)S WPL 33 HT WPL 08, 12, 16 S Trend
WPL 13, 18, 23 E WPW-M 13, 18, 22 WPL 20 A(C) WPL 33, HT (S) WPL 22, 28 Trend
WPL 13, 20 basic WPF 20, 27, 35, 40, 52, 66 WPL 25 A(S)
WPL 13, 20 A basic WPF 27 HT WPL 25 AC(S)
WPL 13, 18 S basic WPL 10 A / I / IK WPL 07, 09, 17 ACS classic
WPL 10 AC WPL 33 WPL 19 I(K), WPL 24 I(K)
WPL 10 ACS
WPL 34, 47, 57

OPERATION
Appliance description
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3.2 Accessories
FE7 remote control
PIC00000609
The FE7 remote control allows you to:
- Change the set room temperature for heating by ±5°C, for
heating circuit1 or heating circuit2.
- 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 effective in the automatic mode
of the heat pump manager.
FEK remote control
PIC00000704
The FEK remote control allows you to:
- Change the set room temperature for heating by ±5°C, for
heating circuit1 or heating circuit2.
- Change the operating mode.
The device 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 pre-selected for a specific heating circuit,
the heating curve, room temperature and heating pro-
gram parameters are not shown at the WPM3 heat pump
manager.
Internet Service Gateway (ISG)
PIC00001002
The Internet Service Gateway (ISG) is an Ethernet gateway in a
wall mounting enclosure 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.
Mixer module MSMW
PIC00000599
The MSM is an extension module for the WPM 3 which makes
additional functions available.
The MSM can also be used as an independent mixer control. In
this case, an outside temperature sensor has to be connected to
the MSM as it cannot communicate with the WPM.
The MSM is operated in the same way as the WPM II.
MSMS 3 mixer and swimming pool module
PIC00005250
The MSM is a control panel module for the WPMS3 which makes
additional functions available. The module does not have its own
programming unit; it is operated via the WPM3. The menus are
extended accordingly.

OPERATION
Operation
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4. Operation
4.1 Controls
OKMENU
D0000064711
WEDNESDAY 12JUN 13 10:23 TIME
OUTSIDE TEMPERATURE
ACTUAL WW TEMPERATURE
27.0 °C
35.0 °C
28.0 °C
ACTUAL RETURN TEMPERATURE
ECO MODE
1 32 4
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 system status
and provides messages and information.
Start screen
WEDNESDAY 12JUN 14 10:23 TIME
OUTSIDE TEMPERATURE
ACTUAL WW TEMPERATURE
27.0 °C
35.0 °C
28.0 °C
ACTUAL RETURN TEMPERATURE
ECO MODE
26�04�01�0292
1
2
3
4
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 tempera-
ture 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 status.
Activating
If the scroll wheel and keys are not used for 5minutes, the pro-
gramming unit is locked.
WEDNESDAY 12JUN 14 10:23 TIME
OUTSIDE TEMPERATURE
ACTUAL WW TEMPERATURE
27.0 °C
35.0 °C
28.0 °C
ACTUAL RETURN TEMPERATURE
ECO MODE
To activate please
press MENU
for 3 seconds.
26�04�01�0292
 Press MENU for three seconds to activate the programming
unit.
Selection indicator
A selection indicator shows the current position within the menu
structure at all times. The currently selected menu item is indi-
cated by a dark background. The current menu level is indicated
at the top of the display.
4.1.2 Touch wheel
D0000064710
The scroll wheel consists of a touch-sensitive sensor. There is a
key to the left and another to the right of it. All required appliance
functions are controlled and checked with the scroll wheel and
the keys.
Note Sensor responsiveness
If you have gloves on, have wet hands or the program-
ming unit is damp, this impedes the recognition of your
touch and the execution of the action you require.
Your contractor can set the sensitivity to touch under SETTINGS/
GENERAL using the TOUCH SENSITIVITY parameter.

OPERATION
Operation
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Circular movement
Move one finger clockwise over the scroll wheel to move the se-
lection indicator downwards or to the right in the list, depending
on how the menu items are arranged. Scrolling anti-clockwise
moves the selection indicator to the left or upwards in the list.
Alongside navigation within the menu structure, the scroll wheel
is also used to set parameters. Scrolling clockwise increases the
values. Scrolling anti-clockwise decreases the 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:
- On the start screen, touch the MENU key to navigate to the
first of the 5 menu structure levels.
- Touching the MENU key while in the menu structure will re-
turn you to the previous menu level.
OK key
The OK key has four functions:
- On the start screen, touching the OK key will activate the
required operating mode previously selected with the scroll
wheel.
- Within the menu structure, touching the OK key confirms the
selected menu item and takes you to the next lower menu
level.
- 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. Selecting
BACK takes you to the next higher menu level.
If there is no user action for more than five minutes, no scrolling
and neither MENU nor OK are pressed, the programming unit
display automatically reverts to the start screen.
Any recent parameter changes which had not yet been confirmed
with OK are lost. The parameters retain the values previously
saved.
4.1.4 Contractor access
Note
Some menu items are protected by a code and can only
be accessed and adjusted by a qualified contractor.
4.2 Entering parameters
Parameters are changed by scrolling with 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 MENU
SETTINGS
°C SET ROOM TEMP COMFORT
26�04�01�0347
HEATING HK1
HEATING CIRCUIT 1
SET ROOM TEMP CO
21
To enter set temperatures, a number surrounded by a circle ap-
pears on the display. This indicates that you can change the value
by scrolling with 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 MENU
SETTINGS
GENERAL
TIME / DATE
SET CLOCK
14
On activation, the selection indicator 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 indicated
field to the required day using 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
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4.3 Selecting operating modes
When the start screen is activated, the current operating mode
is displayed. If you want to select another operating mode, scroll
with the scroll wheel. This takes you through the list of possible
operating modes. The current choice (list entry) is shown in the
shaded selection field.
Note
To change the appliance to this new operating mode,
confirm with OK.
Note
If the selection field shows “POWER-OFF” behind the op-
erating mode, then the heat pump will not heat or cool
during the blocking time.
The compressor and the internal electric reheating stag-
es are switched off. If a buffer cylinder is installed, the
heating circuit pumps will continue running.
One external heat source can be configured for the block-
ing time (see chapter “SETTINGS / HEATING / EXTERNAL
HEAT SOURCE / BLOCKING TIME EVU”).
WEDNESDAY 12JUN 14 10:23 TIME
OUTSIDE TEMPERATURE
ACTUAL WW TEMPERATURE
27.0 °C
35.0 °C
28.0 °C
ACTUAL RETURN TEMPERATURE
26�04�01�0292
ECO MODE
Since navigation to a new operating mode is always made from the
currently enabled mode, you may need to scroll in an anti-clock-
wise direction. All operating modes, apart from DHW mode, apply
to both 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.
Programmed operation
Heating according to the time switch program (applies to heat-
ing circuit1 and heating circuit2). Changeover between comfort
temperature and ECO temperature.
DHW heating according to the time switch program; changeover
between comfort temperature and ECO temperature.
The remote control is only effective in this operating mode.
Application: When DHW and heating are required.
Comfort mode
The heating circuit (HC) is constantly held at the comfort tem-
perature (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 (ap-
plicable to HC1 and HC2). DHW heating according to time switch
program.
Application: During weekends away.
DHW mode
DHW heating according to time switch program. If a time program
is active, 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
mode.
Application: The heating season has ended; only DHW should be
provided (summer mode).
Emergency operation
This setting activates the emergency operation.
In heat pumps with an integral 2nd heat source, the NHZ stag-
es (electric reheating stages) of the electric emergency/booster
heater take over DHW and central heating irrespective of the dual
mode changeover point.
For heat pumps with an external 2nd heat source, the external
heat source for DHW or central heating must be set to ON under
SETTINGS / HEATING or DHW. Only then can the operating mode
be selected. The external heat source then takes over operation
for the DHW or central heating function, irrespective of the dual
mode changeover point.

OPERATION
Menu structure
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4.4 Picture symbols
At the lower edge of the display, symbols provide information
about the current operating status of the heat pump.
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 is
running.
Electric emergency/booster heater
The electric emergency/booster heater has started up.
This occurs, for example, when the outside temperature
has fallen below the dual mode point.
Heating
The heating symbol is displayed when the heat pump is
in heating mode.
DHW heating
This symbol indicates that the heat pump is heating DHW.
Compressor The symbol is displayed when the compressor is running.
Summer mode
The symbol is displayed when the heat pump is in sum-
mer mode.
Cooling The symbol is displayed when the heat pump is in cooling
mode.
Defrost The symbol is displayed when the heat pump is in defrost
mode.
Silent mode
Reduced noise mode
Silent mode is enabled. The associated time programs
determine activation of the fan or compressor throttle.
1
Silent mode 1
The fan and / or compressor run with reduced output.
2
Silent mode 2
Compressor and fan are stopped. Heat source 2 takes
over heating.
Note: This operating mode can result in higher operating
costs.
5. Menu structure
After activating the programming unit, you can use the touch
wheel to select alternative operating modes or use the menu key
to jump to a level from which you can navigate to a specific ap-
pliance parameter.
Note
Not all appliance parameters and values are displayed
in the different menus, depending on which heat pump
type is connected.
Level 1 Level 2
INFO SYSTEM
HEAT PUMP 1-6
DIAGNOSIS SYSTEM STATUS
HEAT PUMP STATUS 1-6
HEAT PUMP ANALYSIS 1-6
SYSTEM
INTERNAL CALCULATION
FAULT LIST
RELAY TEST SYSTEM
RELAY TEST HEAT PUMP 1-6
PROGRAMS HEATING PROGRAM
DHW PROGRAM
PARTY PROGRAM
HOLIDAY PROGRAM
HEAT-UP PROGRAM
SILENT PROGRAM 1
SILENT PROGRAM 2
SETTINGS GENERAL
HEATING
DHW
COOLING
SOLAR
COMMISSIONING ENTER CODE
LANGUAGE
SOURCE
HEATING
DHW
COMPRESSOR
SILENT MODE
EMERGENCY OPERATION
HEAT PUMP RESET
FAULT LIST RESET
SYSTEM RESET
SENSOR CALIBRATION

OPERATION
Menu structure
10 | WPM 3 www.stiebel-eltron.com
5.1 INFO menu
In the INFO menu you can compare the 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 dis-
played if the appropriate sensors are connected.
5.1.1 INFO SYSTEM
Level 3
ROOM TEMPERATURE
ACTUAL TEMPERATURE FE7
Actual room temperature for heating circuit 1 (HC1) or heating cir-
cuit 2 (HC2)
(is only displayed if the FE7 remote control is connected)
°C
SET TEMPERATURE FE7
Set room temperature for heating circuit 1 (HC1) or heating circuit
2 (HC2)
(only displayed if the FE7 remote control is connected)
°C
ACTUAL TEMPERATURE FEK
Actual room temperature for heating circuit 1 or heating circuit 2
(is only displayed if the FEK remote control is connected)
°C
SET TEMPERATURE FEK
Set room temperature for heating circuit 1 or heating circuit 2
(is only displayed if the FE7 remote control is connected)
°C
RELATIVE HUMIDITY %
DEW POINT TEMPERATURE
Dew point temperature (is only displayed if the FEK 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 (HC1). 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 1 (HK1). With fixed
value control, the fixed temperature is displayed.
°C
ACTUAL FLOW TEMPERATURE HP
Actual heat pump flow temperature
°C
ACTUAL FLOW TEMPERATURE NHZ
Reheating stages, actual flow temperature
°C
ACTUAL RETURN TEMPERATURE WP °C
SET FIXED TEMPERATURE °C
ACTUAL BUFFER TEMPERATURE
Actual buffer cylinder temperature
°C
SET BUFFER TEMPERATURE
Set buffer cylinder temperature
°C
HEATING PRESSURE bar
FLOW RATE l/min
SYSTEM FROST PROTECTION °C
DHW
ACTUAL TEMPERATURE
Actual DHW temperature
°C
SET TEMPERATURE
Set DHW temperature
°C
FLOW RATE l/min
Level 3
COOLING
ACTUAL TEMPERATURE FAN °C
SET TEMPERATURE FAN °C
ACTUAL TEMPERATURE AREA °C
SET TEMPERATURE AREA °C
SOLAR
COLLECTOR TEMPERATURE °C
CYLINDER TEMPERATURE °C
RUNTIME Hours
EXTERNAL HEAT SOURCE
ACTUAL TEMPERATURE °C
SET TEMPERATURE °C
DUAL MODE TEMP HZG
Heating dual mode point
°C
APPLICATION LIMIT HZG
Heating application limit
°C
DUAL MODE TEMP DHW
DHW dual mode point
°C
APPLICATION LIMIT DHW
DHW application limit
°C
RUNTIME Hours
ELECTRIC REHEATING
DUAL MODE TEMP HZG
Heating dual mode point
°C
APPLICATION LIMIT HZG
Heating application limit
°C
DUAL MODE TEMP DHW
DHW dual mode point
°C
APPLICATION LIMIT DHW
DHW application limit
°C
SOURCE
SOURCE TEMPERATURE °C
MIN SOURCE TEMPERATURE °C

OPERATION
Menu structure
www.stiebel-eltron.com WPM 3| 11
5.1.2 INFO HEAT PUMP 1-6
Note
The power consumption is calculated on the basis of re-
frigerant circuit pressure. This calculation is inappropri-
ate for billing purposes. Together with the amount of heat
it is used for a rough energy statement.
Level 3
PROCESS DATA
RETURN TEMPERATURE °C
FLOW TEMPERATURE °C
FROST PROTECTION TEMP °C
OUTSIDE TEMPERATURE °C
EXHAUST AIR TEMPERATURE °C
EVAPORATOR TEMPERATURE °C
RECUPERATOR TEMPERATURE °C
COMP SUCTION GAS TEMP °C
COMP SUCTION GAS TEMP ND °C
COMP SUCTION GAS TEMP HD °C
INTERMEDIATE INJ TEMP °C
HOT GAS TEMPERATURE °C
CONDENSER TEMPERATURE °C
OIL SUMP TEMPERATURE °C
LOW PRESSURE bar
MEAN PRESSURE bar
HIGH PRESSURE bar
DIFF PRESSURE VOLT INPUT V
DIFFERENTIAL PRESSURE mbar
WP WATER FLOW RATE l/min
INVERTER CURRENT ND A
INVERTER CURRENT HD A
INVERTER CURRENT A
INVERTER VOLTAGE V
SPEED ND Hz
SET SPEED ND Hz
SPEED HD Hz
SET SPEED HD Hz
ACTUAL COMPRESSOR SPEED Hz
SET COMPRESSOR SPEED Hz
REL FAN RATE %
ACTUAL FAN SPEED Hz
SET FAN SPEED Hz
EVAPORATOR INLET TEMP. °C
AMOUNT OF HEAT
VD HEATING DAY
Amount of compressor heat generated in heating mode since 00:00
of the current day.
kWh
VD HEATING TOTAL
Total amount of compressor heat generated in heating mode.
MWh
VD DHW DAY
Amount of compressor heat generated in DHW mode since 00:00 of
the current day.
kWh
VD DHW TOTAL
Total amount of compressor heat generated in DHW mode.
MWh
NHZ HEATING TOTAL
Total amount of booster heat generated in heating mode.
MWh
NHZ DHW TOTAL
Total amount of booster heat generated in DHW mode.
MWh
Level 3
POWER CONSUMPTION
VD HEATING DAY
Amount of electric compressor output in heating mode since 00:00
of the current day.
kWh
VD HEATING TOTAL
Total amount of electric compressor output in heating mode.
MWh
VD DHW DAY
Amount of electric compressor output in DHW mode since 00:00 of
the current day.
kWh
VD DHW TOTAL
Total amount of electric compressor output in DHW mode.
MWh
RUNTIME
VD HEATING
Runtime of compressor in heating mode.
Hours
VD 1 HEATING
Runtime of compressor 1 in heating mode.
Hours
VD 2 HEATING
Runtime of compressor 2 in heating mode.
Hours
VD 1/2 HEATING
Runtime of compressor 1 and 2 in heating mode.
Hours
VD DHW
Runtime of compressor in DHW mode.
Hours
VD 1 DHW
Runtime of compressor 1 in DHW mode.
Hours
VD 2 DHW
Runtime of compressor 2 in DHW mode.
Hours
VD 1/2 DHW
Runtime of compressor 1 and 2 in DHW mode.
Hours
VD COOLING
Runtime of compressor in cooling mode.
Hours
VD DEFROST
Runtime of compressor in defrost mode.
Hours
VD 1 DEFROST
Runtime of compressor 1 in defrost mode.
Hours
VD 2 DEFROST
Runtime of compressor 2 in defrost 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
DEFROST TIME Minutes
DEFROST STARTS
STARTS
COMPRESSOR
COMPRESSOR 1
COMPRESSOR 2

OPERATION
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12 | WPM 3 www.stiebel-eltron.com
5.2 DIAGNOSIS menu
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.
Note
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
HEATING CIRCUIT PUMP
MIXER PUMP
MIXER OPEN
MIXER CLOSE
SOURCE PUMP
COOLING MODE
BUFFER CHARGING PUMP 1
BUFFER CHARGING PUMP 2
BUFFER CHARGING PUMP 3 - 6
DHW CHARGING PUMP
HEAT SOURCE 2
DHW CIRCULATION PUMP
SOLAR CIRCUIT PUMP
NHZ 1
NHZ 2
NHZ 1/2
POWER-OFF
HEAT PUMP STATUS 1 - 6 REMAINING IDLE TIME
COMPRESSOR
COMPRESSOR ND
COMPRESSOR HD
COMPRESSOR 1
COMPRESSOR 2
NHZ 1
NHZ 2
NHZ 1/2
DEFROST VALVE
PRESSURE COMPENSATION
OIL COMPENSATION
OIL SUMP
FAN
RIBBON HEATER
EXTERNAL COMPRESSOR ON
EXTERNAL FAULT
HD LIMITER
HD/TEMPERATURE MONITOR
DEFROST SIGNAL
CENTRAL INPUT
INVERTER POWER SUPPLY
FAULT
FORCED HEATING
COOLING MODE
HEAT PUMP ANALYSIS 1-6 SET SUPERHEATING
ACTUAL SUPERHEATING V
CONTROL DEVIATION
P FACTOR
I FACTOR
D FACTOR
PRE-CTRL OPENING EXV
Level 2 Level 3
OPENING EXV
SET SUPERHTG SG V HD
ACTUAL SUPERHTG SG V HD
P FACTOR V-HD
I FACTOR V-HD
D FACTOR V-HD
SET SUPERHEATING SG V-ZE
ACTUAL SUPERHEATING SG V-ZE
P FACTOR V-ZE
I FACTOR V-ZE
D FACTOR V-ZE
V OPENING DEGREE EXV ZE
OPENING EXV ZE
SUPERCOOLING COND
ACTUAL SUPERHEATING REK
INTERMEDIATE INJ PRESSURE
ACTUAL SUPERHEATING ZE
AMBIENT TEMP. INVERTER
TEMP. INV. COMPRESSOR
TEMPERATURE INV. FAN
MOTOR CURRENT
BYPASS VALVE OPENING LVL
SYSTEM BUS SUBSCRIBER
HEAT PUMP TYPE
INTERNAL CALCULATION INTERVAL
LIVE STAGES
FAULT LIST
RELAY TEST SYSTEM DHW CIRCULATION PUMP
BUFFER CHARGING PUMP 1
BUFFER CHARGING PUMP 2
DHW CHARGING PUMP
HEATING CIRCUIT PUMP
HEAT SOURCE 2
WE 2 MIN OUTPUT
WE 2 MAX OUTPUT
MIXER OPEN
MIXER CLOSE
MIXER PUMP
SOURCE PUMP
SOLAR CIRCUIT PUMP
COOLING MODE
DRAIN HYD
NHZ 1
NHZ 2
NHZ 3
RELAY TEST HEAT PUMP 1-6 DEFROST
FAN
NHZ 1
NHZ 2
OIL SUMP
COMPRESSOR
STEPPER MOTOR PHASE 1
STEPPER MOTOR PHASE 2
STEPPER MOTOR PHASE 3
STEPPER MOTOR PHASE 4
STEPPER MOTOR PHASE 1 ZE
STEPPER MOTOR PHASE 2 ZE
STEPPER MOTOR PHASE 3 ZE
STEPPER MOTOR PHASE 4 ZE

OPERATION
Menu structure
www.stiebel-eltron.com WPM 3| 13
Level 2 Level 3
RIBBON HEATER
EXTERNAL COMPRESSOR ON
EXTERNAL FAULT
EX VALVE CENTRE POSITION
5.2.1 Fault list
The fault list provides 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. Scroll with the
scroll wheel to access the other entries in the fault list.
MAIN MENUDIAGNOSIS
FAULT LIST 1/1
01. SENSOR BREAK E 71
10:26 14JUN 14
02. MIN SOURCE
17:45 25JUN 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 14JUN 14 16:27 TIME
If more than one fault occurs, the most recent fault is always
shown. Notify your qualified contractor.
5.2.3 Relay test
All relay outputs of the controller and heat pump can be individ-
ually switched from here.
5.3 PROGRAMS menu
All times for the heating, DHW, holiday and party modes can be
adjusted here. In addition, the heat-up program can be started.
Level 2 Level 3
HEATING PROGRAM HEATING CIRCUIT 1
HEATING CIRCUIT 2
DHW PROGRAM
PARTY PROGRAM HOURS
HOLIDAY PROGRAM HOLIDAYS BEGINNING
HOLIDAYS ENDING
HEAT-UP PROGRAM LOW END TEMPERATURE
DURATION BASE TEMP
MAXIMUM TEMPERATURE
MAX TEMPERATURE DURATION
RISE PER DAY
SILENT PROGRAM 1
SILENT PROGRAM 2
5.3.1 HEATING PROGRAM
In 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 adjust the set values under
menu item SETTINGS / HEATING / HEATING CIRCUIT1 or HEAT-
ING CIRCUIT2. Below is 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 MENU
PROGRAMS
HEATING PROGRAM
HEATING CIRCUIT 1
You can set your heating system as follows:
- For each individual day of the week (Monday - Sunday)
- Monday to Friday (Mon - Fri)
- Saturday and Sunday (Sat - Sun)
- the whole week (Mon - Sun)
Monday is initially offered.
 Scroll with 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

OPERATION
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14 | WPM 3 www.stiebel-eltron.com
switching time 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 MENU
PROGRAMS
HEATING PROGRAM
HEATING CIRCUIT 1
In this example, only one switching time pair has so far been
programmed. For switching time pairs 2 and 3, short dashes are
displayed instead of times. These switching time pairs are still
empty. Select one of the free switching time pairs with OK to reach
the area where you can set the associated start and end time.
Pressing OK brings up the display shown below. Set the required
time with the scroll wheel.
End
- -:- - - -:- -
TIME TIME
Start
26�04�01�0302
MAIN MENU
PROGRAMS
HEATING PROGRAM
HEATING CIRCUIT 1
Times can be entered in intervals of 15 minutes. You can set 16:30
or 16:45 h, but not 16:37 h. Confirm your entry with OK.
Periods around midnight
Assume, for example, you want heating mode to be enabled from
22:00 h for four hours every Wednesday evening. This means the
period does not expire until the next day, Thursday, at 02:00 h.
However, since the day ends at 00:00h, two switching time pairs
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 menu item DHW PROGRAM you can determine the times during
which DHW heating to the set comfort value should take place.
At all other times, DHW is heated to the set ECO value. You can
adjust the set values under menu item SETTINGS / DHW / DHW
TEMPERATURES. The DHW circulation output is also switched in
line with the times programmed here.
You can set your DHW heating as follows:
- For each individual day of the week (Monday - Sunday)
- Monday to Friday (Mon - Fri)
- Saturday and Sunday (Sat - Sun)
- the whole week (Mon - Sun)
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.
Example:
You would like to heat DHW twice daily, e.g. 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, programming for this example must
again start at 00:00 h.
- 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 for heating
by a few hours.
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 0:00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
Menu item HEAT-UP PROGRAM is protected by a code
and can only be accessed and adjusted by a qualified
contractor.
Heat-up program for underfloor heating systems
Use the heat-up program to dry your screed with a defined tem-
perature profile. To prevent damage to the appliance and/or the
installation, observe the following differences between air | water
heat pumps (WPL) and brine | water heat pumps (WPF):
- WPL: Where return temperatures are < 25°C, the heat-up
program / screed drying must be carried out via the emer-
gency/booster heater. The process must not be carried out
via the heat pump – such low system temperatures during
the defrost cycle mean that the appliance may not be protect-
ed from frost during the defrost cycle. If the return tempera-
ture rises > 25°C the heat pump can take over screed drying.
For this, set parameter “LOWER APP LIMIT HZG” to -20°C.
- WPF: 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 tem-
peratures and periods for the heat-up program. These 6 parame-
ters 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.

OPERATION
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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 max-
imum 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. The pump for heating circuit 1
is not controlled.
During the heat-up program the appliance often reaches maxi-
mum 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.
5.3.6 SILENT PROGRAM 1
For HP types 1/1* (not for WPL 34/47) and 4/4*, the fan speed is
reduced. This reduces the sound level emitted by the heat pump.
For HP types 3/3* and 5/5*, both the fan speed and the compressor
output can be reduced. Both options can be set independently of
one another.
5.3.7 SILENT PROGRAM 2
In this program, the air source heat pump is switched off for the
entire set period and only the internal or external secondary heat
generator is used for heating.
PLEASE NOTE: This program may result in high electricity bills.

OPERATION
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16 | WPM 3 www.stiebel-eltron.com
5.4 SETTINGS menu
Here you can set all system-specific parameters for heating, cooling and DHW modes as well as general settings such as the time.
Note
Some menu items are protected by a code and can only be accessed and adjusted by a qualified contractor.
Note
Not all appliance parameters are displayed in the different menus, depending on which heat pump type is connected.
Level 2 Level 3 Level 4 Level 5
GENERAL TIME / DATE TIME
YEAR
MONTH
DAY
SET SUMMER TIME DAY BEGINNING
DAY ENDING
CONTRAST
BRIGHTNESS
TOUCH SENSITIVITY
TOUCH ACCELERATION
HEATING HEATING CIRCUIT 1 COMFORT TEMPERATURE
ECO TEMPERATURE
MINIMUM TEMPERATURE
ROOM INFLUENCE
HEATING CURVE RISE
HEATING CURVE VIEW
HEATING CIRCUIT 2 COMFORT TEMPERATURE
ECO TEMPERATURE
MINIMUM TEMPERATURE
MAXIMUM TEMPERATURE
MIXER DYNAMICS
ROOM INFLUENCE
HEATING CURVE RISE
HEATING CURVE VIEW
STANDARD SETTING BUFFER OPERATION
SUMMER MODE OUTSIDE TEMPERATURE
BUILDING HEAT BUFFER
FLOW PROP HEATING CIRC
MAXIMUM RETURN TEMP
MAXIMUM FLOW TEMPERATURE
FIXED VALUE OPERATION
HEATING CIRCUIT OPTIMAL
FROST PROTECTION
REMOTE CONTROL FE7 HEATING CIRC PRESELECTION
ROOM INFLUENCE
ROOM CORRECTION
PUMP CYCLES
EXTERNAL HEAT SOURCE THREADED IMMERSION HEATER
BOILER
HZG PWM
HEATING CURVE GAP

OPERATION
Menu structure
www.stiebel-eltron.com WPM 3| 17
Level 2 Level 3 Level 4 Level 5
SET BOILER TEMPERATURE
BLOCKING TIME EVU
LOWER APP LIMIT HZG
DUAL MODE TEMP HZG
HZG PWM
ELECTRIC REHEATING LOWER APP LIMIT HZG
DUAL MODE TEMP HZG
NUMBER OF STAGES
DELAY
DHW DHW TEMPERATURES COMFORT TEMPERATURE
ECO TEMPERATURE
STANDARD SETTING DHW MODE PRIORITY OPERATION
PARALLEL OPERATION
PARTIAL PRIORITY
DHW HYSTERESIS
DHW STAGES
AUTOMATIC DHW CONTROL OUTSIDE TEMPERATURE
WW LEARNING FUNCTION
COMBI CYLINDER
WW OUTPUT WP WW OUTPUT SUMMER
WW OUTPUT WINTER
MAXIMUM FLOW TEMPERATURE
PASTEURISATION
ELECTRIC REHEATING DUAL MODE TEMP WW
LOWER APP LIMIT WW
EXTERNAL HEAT SOURCE SUPPORTED
ALONE
INDEPENDENT
DUAL MODE TEMP WW
LOWER APP LIMIT WW
WW PWM
COOLING COOLING
COOLING MODE PASSIVE COOLING
ACTIVE COOLING
STANDARD SETTING COOLING STAGES
COOLING LIMIT
COOLING CAPACITY
ACTIVE COOLING AREA COOLING SET FLOW TEMPERATURE
FLOW TEMP HYSTERESIS
SET ROOM TEMPERATURE
DYNAMICS ACTIVE
DYNAMICS PASSIVE
FAN COOLING SET FLOW TEMPERATURE
FLOW TEMP HYSTERESIS
SET ROOM TEMPERATURE
DYNAMICS ACTIVE
DYNAMICS PASSIVE
PASSIVE COOLING AREA COOLING SET FLOW TEMPERATURE
FLOW TEMP HYSTERESIS
SET ROOM TEMPERATURE
DYNAMICS PASSIVE
FAN COOLING SET FLOW TEMPERATURE

OPERATION
Menu structure
18 | WPM 3 www.stiebel-eltron.com
5.4.1 GENERAL
TIME / DATE
Here you can set the time, year, month and day.
SET SUMMER TIME
Here you can adjust the settings for summertime.
Summertime is factory-set to begin on 25March and to end on
25October.
CONTRAST
Here you can adjust the display contrast.
BRIGHTNESS
Here you can adjust 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.
As soon as the FE7 remote control has been connected and allo-
cated to heating circuit 1, the actual room temperature can also
be called up.
As soon as the FE7 or FEK remote control has been connected and
allocated to heating circuit2, the actual room temperature can
also be called up.
The display HEATING 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 control unit and will never be undershot.
MAXIMUM TEMPERATURE
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 is used to
control and regulate to this value.
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 start duration 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 tem-
perature) 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 tem-
perature) 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 start du-
ration and the longer the pauses.
A reduction of the mixer dynamics value with the control deviation
unchanged increases the start duration and reduces pauses.
Example for the setting 100 and a current control deviation of 5 K.
5 K of 10 K = 50% = start 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 Start duration in %
Level 2 Level 3 Level 4 Level 5
FLOW TEMP HYSTERESIS
SET ROOM TEMPERATURE
DYNAMICS PASSIVE
SOLAR MAXIMUM CYLINDER TEMP
SOLAR DIFFERENTIAL

OPERATION
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ROOM INFLUENCE
Adjustable from 0 to 20 and OFF (standard setting: 05)
With the FE7 remote control connected, the room temperature
sensor only serves to record and display the actual room temper-
ature; it has no influence on the actual control. The remote control
can be used to adjust the room temperature for heating circuit 1
or 2 by ± 5 °C in automatic mode only. This set value adjustment
applies to the current heating time, not to the setback time.
At the same time, the setting “0 to 20” serves to control the room
temperature-dependent night setback. This means that the heat-
ing circuit pump switches off at the changeover from the heating
phase to 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 the room temperature is to be included in the control loop, the
room sensor influence must be set to a value > 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.
-Room temperature-dependent return / flow temperature
with weather compensation
With this type of control, a controller cascade is formed from both
weather-compensated and room temperature dependent return/
flow temperature control. This means that the weather-compen-
sated 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:
∆ϕR= (ϕRset − ϕRactual) * S * K
Because a substantial proportion of the control is already handled
by the weather-compensated control, the room sensor influence K
can be set lower than with pure room temperature control (K=20).
The graph shows 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 main benefits:
Incorrectly set heating curves are corrected by the room sensor
influence K; the smaller factor K means the control unit works in
a more stable manner.
However, observe the following for all control units with room
sensor influence:
- The room temperature sensor must capture the room tem-
perature 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 heat-
ing circuit.
If the room temperature is to be included in the control loop, the
room sensor influence must be set to a value > 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 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
HEATING CURVE RISE
Menu item HEATING CURVE RISE enables you to set 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. For heating cir-
cuit 1 the curve relates to the heat pump return temperature, for
heating circuit 2 to the mixer flow temperature.
When you adjust the heating curve on the heat pump manager,
the calculated set return or flow temperature is shown at the top
of the display, subject to the outside temperature and the set
room temperature.
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
shows SETFIXED TEMPERATURE with the relevant temperature.
At the factory, heating curve 0.6 is set for heating circuit1 and
heating curve 0.2 for heating circuit2. These heating curves relate
to a set room temperature of 20 °C.
1,5
2
1,2
1
0,6
0,4
0,2
2,53
20 18 16 14 12 10
8 6 4 2 0
-2 -4 -6 -8
-10 -12 -14 -16 -18 -20
100
80
60
40
20
0,8
26�03�01�1300
Y Heating circuit 1, heat pump return temperature [°C]
Heating circuit 2, heat pump flow temperature [°C]
X Outside temperature [°C]

OPERATION
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20 | WPM 3 www.stiebel-eltron.com
HEATING CURVE VIEW
Adjustment of programmed operation – changeover between
comfort and ECO mode
The diagram shows the graph with the set heating curve relating
to a set room temperature for comfort mode. The second, dotted
line 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
Example of adapting a heating curve:
With heating systems, the temperature in a building during the
transitional periods (spring and autumn) is too low when outside
temperatures are between 5 °C and 15°C, despite open radiator
valves, but is OK at outside temperatures ≤ 0°C. This problem can
be remedied with a parallel shift and a simultaneous reduction
of the heating curve.
Heating curve 1.0 was initially adjusted relative to a set room tem-
perature 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]
STANDARD SETTING
BUFFER OPERATION
When using a buffer cylinder, set this parameter to ON.
The buffer charging pump always operates in conjunction with
the compressor.
The “buffer operation OFF” setting is intended for installations
without a buffer cylinder. In this case, this pump operates as a
heating circuit pump and runs constantly.
SUMMER MODE
Parameter SUMMER MODE enables you to define the point at
which the heating system is to switch to summer mode. Summer
mode can be switched on or off. There are 2 adjustable parameters
for this function.
OUTSIDE TEMPERATURE
Adjustable outside temperature
BUILDING HEAT BUFFER
This parameter lets you choose whether an average outside tem-
perature should be determined, according to the type of building.
You can choose from 4 settings.
Setting "0": The outside temperature is not adjusted. The average
and the building-specific outside temperatures are identical to
the current outside temperature; direct comparison between the
selected and current outside temperature.
Setting "1": Slight adjustment of the outside temperatures (aver-
aged over a 24h period), e.g. for timber construction with rapid
heat transfer.
Setting "2": Moderate adjustment of the outside temperature (av-
eraged over a 48h period), e.g. brick construction with thermal
insulation and average heat transfer.
Setting "3": Major adjustment of the outside temperature (aver-
aged over a 72h period). House with slow heat transfer.
If the determined outside temperature is ≥ the selected outside
temperature, both heating circuits (if installed) enter summer
mode; reverse hysteresis –1 K.
With fixed value control, summer mode is disabled for heating
circuit 1.
FLOW PROP HEATING CIRC
Flow proportion for temperature capture of heating circuit 1, heat-
ing circuit control unit
Setting range 0 to 100 %:
Here you can select flow or return temperature control
for the heating system.
Setting 0: Heating system with return temperature control
Setting 100: Heating system with flow temperature control
Setting 80: Spread control (20 % return and 80 % flow control)
Setting 50: Spread control (50 % return and 50 % flow control)
Setting 30: Spread control (70 % return and 30 % flow control)
Generally, values below 80 (recommendation: 50) should normally
be set for heating circuit 1 to limit the influence of the flow temper-
ature. Particularly in spring and autumn, the flow temperature is
naturally subject to strong fluctuations because of the heat pump
being switched on and off.
MAXIMUM RETURN TEMP
If the temperature at the return sensor reaches this set value
during heating mode, the heat pump is immediately switched
off. This safety function prevents the high pressure limiter from
responding. No fault message is issued when this value is reached.
In DHW mode the return temperature is not scanned.