STIEBEL ELTRON WPC 5 S GB User manual

26_03_01_0074
Index
1 Operating instructions
for users and contractors 2
1.1 Equipment summary 2
1.2 Equipment description 2
1.3 Operating and installation instructions 2
1.4 Maintenance and care 3
1.5 Important information 3
1.6 Operation 3
1.7 What to do if ...? 3
1.8 Settings 4
1.9 FE 7 remote control 13
1.10 FEK remote control 13
2 Installation instructions
for contractors 14
2.1 Equipment layout 14
2.2 Specification 15
2.3 Accessories 18
2.4 Special accessories 18
2.5 Equipment description 19
2.6 Operation and control 20
2.7 Instructions and regulations 20
2.8 Maintenance and cleaning 20
2.9 Installation 22
Electrical connection 28
Wiring diagram 29
2.10 Electrical connection with WPAB 30
2.11 WPMi commissioning summary 32
2.12 Initial start-up 34
2.13 Commissioning in detail 34
2.14 Troubleshooting 40
2.15 Commissioning list 42
2.16 Standard equiment 44
Commissioning report 46
Guarantee 49
Environment/recycling 49
The installation (water and electrical work) and commissioning, as well as the maintenance of this equipment, must only be carried out by an
authorised qualified contractor in accordance with these instructions.
WPC 5 S GB, WPC 7 S GB, WPC 10 S GB
Brine/water heat pump
Operating and installation instructions

2
1 Operating instructions for users and contractors
1.2 Equipment description
These are central heating heat pumps with
integral DHW cylinder, designed for operation
as brine/water heat pumps. The heat pump
extracts energy from the heat source medium,
i.e. brine, at a low temperature level. This
extracted energy is then transferred to the
heating water at a higher level, enriched with
the energy drawn by the compressor. Subject
to the heat source temperature, the heating
water can be heated up to a flow temperature
of 60 °C.
Inside the equipment, a brine pump, a
heating circuit pump and a three-way valve for
diverting the flow either to the heating circuit
or the DHW circuit have been integrated.
DHW is heated by pumping the heating water,
which has been heated by the heat pump,
through a heat exchanger into the DHW
cylinder, where it transfers its energy to the
DHW.
The equipment is regulated by an integral,
weather-compensated return temperature
controller (heat pump manager WPMi).
The WPMi also regulates the DHW heating to
the required temperature. DHW heating will
be completed automatically by an integral
electric booster heater, if either the high
pressure sensor or the hot gas limiter of the
heat pump responds during DHW heating,
subject to the ECO function being enabled.
Subject to the ECO function being enabled,
the DHW heating will terminate and the set
DHW value overwritten with the actual DHW
temperature that has been achieved.
A red signal indicator shows that the signal
anode has been consumed.
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F
ASystem status display
1 Mixer opens
2 Mixer closes
3 Circulation pump
heating circuit 2 “mixer circuit”
4 Circulation pump
heating circuit 1 “radiator circuit”
5 DHW heating
6 Compressor 1
7 Buffer cylinder primary pump
8 Kühlen
9 Electric booster heater
(DHW heating)
10 Booster heater (central heating)
11 Equipment menu
A Display
B Rotary selector
C Rotary selector Reset / Auto
D Programming key
E Programming indicator
F Optical interface RS 232
G ON indicator, green (heating)
H Signal indicator, red (signal anode)
6
7
8
9
10
1
2
3
4
5
11
1.1 Equipment summary
H
C26_03_01_0073
Room temp. 1
Room temp. 2
Hot water temp.
Day / Hour
Holiday / Partypr.
Info temp
Heating Curve
Heating prog.
Hot water prog. .
First start-up
1..,3'"
z Heat pumps operate with particular econo-
my and environmental responsibility when
they work with a maximum flow tempera-
ture of 35 °C. Low flow temperatures can
be achieved by using area heating systems
(e.g. underfloor heating or wall heating
systems).
z Size radiators so that the maximum re-
quired flow temperature does not exceed
45 °C.
z Activating the control parameter „Pump
cycling“ can reduce the power drawn by
the circulation pump. In this connection,
refer to your local heating contractor.
z When activating the „WW ECO“ parameter,
the heat pump heats DHW exclusively on
its own, i.e. without the additional electric
booster heater. In that case, the DHW
temperature is automatically limited to that
value, which the heat pump can actually
achieve. If, for reasons of pasteurisation,
you want to heat to 60 °C at least once
every day, activate the „Pasteurisation“
parameter. In this connection, refer to your
local heating contractor.
Energy saving tip

3
1.4 Operation
The operation is split over three control
levels. Control levels 1 and 2 are accessible to
users and contractors alike. Control level 3 is
reserved for contractors:
Control level 1 (control flap closed)
At this level, parameters, such as room
temperature, DHW temperature, heating
programs, etc. can be adjusted (for this, see
section 1.8.2).
Control level 2 (control flap open)
At this level, parameters, such as room
temperature, DHW temperature, heating
programs, etc. can be adjusted (for this, see
section 1.8.2).
Vital facts in brief
Settings
All settings follow the same pattern:
Opening the control flap toggles the WPMi
into programming mode.
An indicator symbol is shown at the
bottom of the display at system parameter
1..,3$,/.
Turning rotary selector allows you to
move the indicator to the parameter you
want to change.
Press to change the value of the
parameter. Whenever the red indicator above
illuminates, you can modify the current
value by turning rotary selector . Press
again; the illuminator then extinguishes and
the new set value has been saved. You can
modify further values for this parameter by
pressing , if the red indicator has not been
extinguished above . The programming
step can only be terminated when the red
indicator has extinguished.
Terminate programming
You can terminate the process after entering
and saving the required parameter changes
by closing the control flap. However, if you
want to make further changes, turn the
rotary selector until the display shows
! "*, then press This will return you to
the previous level. Closing the control flap
with illuminated indicator above returns
the WPMi into its original position. The
modified value will then not be saved.
1.5 What to do if . . . ?
. . . there is no hot water or the heating
system stays cold:
Check the fuse/circuit breaker in your fuse box.
If it has blown/tripped, replace/reset the fuse/
MCB. Notify your local contractor if the fuse/
MCB blows/trips again.
1.3 Important information
The heat pumps must only be
installed and maintained by qualified
contractors.
Never:
zuse process media, which are not
expressly approved
zheat liquids other than heating water
zinstall the equipment
a) outside
b) in rooms where there is a risk
from frost
c) in wet areas, e.g. bathrooms
d) in rooms where there is a risk of
heavy dust contamination
e) in areas, where there is a risk of
explosions
zoperate the equipment
a) outside the stated temperature limits
b) without minimum flow rate on the
heat source and heat utilisation side
The DHW cylinder is at mains water pressure.
During heat-up, expansion water drips from
the safety valve, if no DHW expansion vessel
is installed. Inform your local contractor of
water drips from the system after the heat-
up process has ended.
Control level 3 (for contractors only)
This level is protected by a code and should
only be used by contractors. At this level,
heat pump and system-specific details are
determined (for this, see sections 2.11 and
2.13).
During commissioning, a system
check will be implemented,
e.g. all sensors that are currently connected
are displayed upon request. Sensors not
connected before the system went ‘live’
are not registered by the WPMi and are
therefore not displayed. The indicator
symbol skips that parameter.
Summary of WPMi functions
zRS 232 interface for adjustment and
monitoring via a PC
zSystem expansion through the FEK and
FE 7 remote control units
zInput of the system and heat pump frost
protection limits
zAt least 24 h backup power for the clock
zAutomatic pump kick-start
zReset option
zStored fault list with precise fault code
indication, together with date and time
display
zRapid and accurate fault diagnostics using
system analysis including temperature
scan for heat pump and peripheral
equipment without regarding additional
equipment.
zFactory settings for time switch programs
for all heating and DHW circuits
. . . the DHW flow rate is too low:
Remove the contamination and/or scaling
from perlators in water taps or shower heads.
. . . the red signal indicator illuminates:
Ask your local contractor to check or replace
the signal anode, if required.
Notify your local contractor in case of all other
faults.
1.6 Maintenance, care and safety
Maintenance work, e.g. checking
the electrical safety, must only be
carried out by a qualified contractor. Protect
the equipment from dust and dirt ingress
during building work.
A damp cloth is sufficient for cleaning all
plastic and sheet steel parts. Never use
scouring or solvent-based cleaning agents.
Scaling
Almost every type of water deposits limescale
at high temperatures. This settles inside the
appliance and affects both the performance
and service life. If a flanged immersion heater
is installed, the heating elements must be
descaled from time to time by a heating
contractor. A heating contractor who knows
the local water quality will tell you when the
next service is due.
Check the taps regularly. You can remove
limescale deposits at the tap outlets using
commercially available descaling agents.
Risk of injury
Where children or persons with
limited physical, sensory or mental
capabilities are to be allowed to control this
appliance, ensure that this will only happen
under supervision or after appropriate
instructions by a person responsible for
their safety.
Children should be supervised to ensure
that they do not play with the appliance.
1.7 Operating and installation
instructions
Subject to the relevant system, also observe
the operating and installation instructions
of the components of which the system
comprises.
Keep these operating and
installation instructions safely and
pass them on to any new user, should the
equipment change hands, and let your
contractor check their content in conjunction
with any maintenance and repair work.

4


 
9
&
Display (including all elements)
Booster heater (emergency mode)
DHW mode
Constant setback mode
Constant day mode
Automatic mode
Standby mode
Fault message (flashing)
14-digit plain text display
Compressor runs
Heating times for central heating and DHW (black)
Booster heater in operation
Switching time pairs for central heating and DHW operation
Day mode for heating circuit 1
Setback mode for heating circuit 1
1.8 Settings
1.8.1 Operating modes
(control level 1)
The operating modes are changed by turning
rotary selector with the control flap. closed.
Standby mode
Frost protection is activated for central
heating and DHW operation. The display
indicates frost protection when the flap
is closed.
The set DHW temperature is permanently
set to 10 °C; the set heating flow
temperature is calculated in relation to a
set room temperature of 5 °C, see point
3.
Application: Holidays.
Automatic mode
Heating subject to time switch program
(applies to heating circuits 1 and 2),
changeover between day and setback
temperatures. DHW in accordance with
a time switch program; changeover
between day temperature and setback
temperature. With this operating mode,
an additional symbol (sun or moon)
indicates whether heating circuit 1 is
currently in day or in setback mode.
The remote control is only active in this
mode.
Application: Heating and DHW.
Constant day mode
The heating circuit is constantly held at
the day temperature (applicable to HC1
and HC2). DHW according to time switch
program.
Application: Low energy houses without
setback mode.
Constant setback mode
The heating circuit is constantly held at
the setback temperature (applicable to
HC1 and HC2). DHW according to time
switch program.
Application: Weekends away.
DHW mode
DHW in accordance with a time switch
program; changeover between day
temperature and setback temperature.
Frost protection is enabled for central
heating operation.
Application: The heating season has
ended; only DHW should be generated
(summer mode).
Booster heater
This setting activates the emergency
operation. In this operating mode, the
booster heater provides DHW and central
heating, irrespective of the dual-mode
changeover point.
Fault message (flashing)
Indicates faults in the heat pump system.
Notify your local contractor.
26_03_01_0075

5
With the parameter 1..,3$,/ you can select the 2$31..,3$,/ for day and setback
mode for 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 1.
With the parameter 1..,3$,/ you can select the 2$31..,3$,/ for day and setback
mode for heating circuit 2. 1..,3$,/ will only be displayed, if the mixer flow sensor for
heating circuit 2 has been connected.
The actual room temperature can also be scanned, as soon as the FE 7 or FEK remote control has
been connected and allocated to heating circuit 2.
You can allocate a set day or night temperature to the DHW cylinder temperature using the
parameter #'63$,/.
You can adjust the time and summer time with the 3(,$# 3$ parameter.
At the factory, summer time is set up to begin on the 25 March and to end on the 25 October.
The '.+(# 8/1.& parameter puts the heat pump system into setback mode.
Frost protection is activated for the DHW cylinder.
The / 138/1.& parameter allows you to extend the day mode by a few hours.
The '3&"415$ parameter enables you to adjust one heating curve each for heating circuit 1 and
2. The room temperature will only remain constant, irrespective of the outside temperature, if the
correct heating curve has been selected for the relevant type of building. Selecting the correct
heating curve is therefore vitally important.
The '3&/1.& parameter enables you to adjust associated heating programs for heating circuit 1
and 2 respectively.
The #'6/1.& parameter enables you to adjust the times for the day and setback temperatures
for #'6'3&.
The parameter (-%.3$,/ enables you to scan the heat pump or heat pump system sensor
temperatures, comparing set with actual values, the heating curve gap, etc.
As part of the First Start-up, determine not only the settings at control level 2 but also the system-
specific parameters. These parameters are adjusted at control level 3, access to which is protected
by code.
Check all parameters in sequence.
Enter all selected values into the column (system value) provided In the commissioning report.
1.8.2 Overview of system parameters (control level 2)
Select the required parameter with the rotary selector.
For adjustments to parameters, turn to page 6.
1..,3'"
1..,3'"
#'63$,/
3(,$# 3$
'.+/ 138
3$,/$1 341$2
'3&"415$2
'3&/1.&
#'6/1.&
23 134/
1.8.3 For WPC...S GB with WPAC2 your contractor selects the room temperature for the cooling mode at control level 3. Cooling commences
when the room temperature exceeds the set room temperature.
Cooling terminates when the actual room temperature is 2 K < than the set room temperature.
For cooling via cooling surfaces (underfloor heating/wall area heating systems) you need the additional FEK remote control
(part.no.220193). For cooling via fan convectors, you need the additional FEK remote control (part. no. 220193) or FE 7 (part. no. 185579)
Cooling via radiators would result in moisture damage; it is therefore not permissible.

6
Room temperature HC1
With the parameter 1..,3'" you can
select the set room temperature for day and
setback mode for heating circuit 1. Changing
these parameters results in a parallel offset of
the heating curve.
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 1.
DHW temperature
You can allocate a set day or night
temperature to the DHW cylinder temperature
using the #'63$,/ parameter.
Open the control flap
Open the control flap
Room temperature HC2
With the parameter 1..,3'" you can
select the set room temperature for day and
setback mode for heating circuit 2. You can
change the room temperature, if you feel
rooms are either too hot or too cold.
1..,3$,/ will only be displayed, if the
mixer flow sensor is connected.
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.
Open the control flap
Adjustments at control level 2 for users and contractors
1..,3'"
2$31..,3# 8
2$31..,3# 8
2$31..,3-&3
2$31..,3-&3
"34 +1..,3
! "*
1..,3'"
1..,3'"
2$31..,3# 8
2$31..,3# 8
2$31..,3-&3
2$31..,3-&3
"34 +1..,3
! "*
1..,3'"
#'63$,/
2$3#'63# 8
2$3#'63# 8

7
Time and date
You can adjust the time and summer time
with the 3(,$# 3$ parameter.
At the factory, summer time is set to begin on
the 25 March and to end on the 25 October.
Open the control flap
Set the time or
summer time
2$3#'63-&3
2$3#'63-&3
"34 +#'63
! "*
#'63$,/
3(,$# 3$
2$3"+."*
3(,$
3(,$
8$ 1
,.-3'
# 8
2$3"+."*
! "*
3(,$# 3$

8
8$ 123./
,.-3'23./
# 823./
'.+(# 8
! "*
'.+/ 138
Holiday and party program
In ELIF >VJL B, the heat pump system
operates in setback mode; frost protection
for DHW heating is active. Holiday mode is
displayed with the flap closed. For the start
of the holidays, the year, month and day
are entered; for its end also enter the year,
month and day. The start and end time is
always 24:00 h of the date entered. After the
holiday period has expired, the heat pump
system operates again in accordance with the
previous heating and DHW program.
In M>OQVJL B you can extend day mode
for central heating by a few hours. This is
displayed with the flap closed.
For example, if the heating program normally
switches to setback mode at 22:00 h, and you
set the party mode to two hours, then setback
mode would only begin at 24:00 h.
Open the control flap
'.+/ 138
'.+(# 8
8$ 123 13
,.-3'23 13
# 823 13
Info Temperatures
Under menu item temperatures, you can scan
values of the heat pump or heat pump system.
Open the control flap.
3$,/$1 341$2
.432(#$
! "*
3$,/$1 341$2
Actual or set temperatures will not be
displayed if the corresponding sensor is
not connected.

9
INFO
OUTSIDE Outside temperature
ACTUAL ROOM T Actual room temperature for heating circuit 1 (HC1) or heating circuit 2 (HC2)
(will only be displayed if the FE7 remote control is connected)
SET ROOM T Set room temperature for heating circuit 1 or heating circuit 2
(will only be displayed if the FE7 remote control is connected)
REL HUMIDITY Relative humidity
DEW POINT TEMP Dew point temperature
ACTUAL DHW T Actual DHW temperature
SET DHW TEMP Set DHW temperature
ACTUAL RTRN T Actual heat pump return temperature - heating circuit 1
SET RTRN TEMP Set heat pump return temperature for heating circuit 1 (HC1). Fixed temperature is displayed for fixed temperature control
ACTUAL MIXER T Actual mixer flow temperature - heating circuit 2
SET MIXER TEMP Set mixer flow temperature - heating circuit 2
FIXED VALUE Fixed temperature - heat pump return
SET BUFFER T Set buffer temperature (Highest set value of heating circuits H1 and H2 (H3 if MSM is installed). Fixed temperature will be
displayed for fixed temperature control)
ACTUAL FLOW T Actual heat pump flow temperature
SET FLOW HEAT Set central heating flow temperature
ACTUAL SRCE T Actual source temperature
SET SRCE TEMP Minimum source temperature
DUAL MODE HEAT Dual-mode point - central heating
DUAL MODE DHW Dual-mode point - DHW
HEAT LIMIT Limit temperature - central heating
DHW LIMIT Limit temperature - DHW
SYST FROST PRO System frost protection temperature
HOT GAS TEMP Compressor outlet temperature
PRESSURE HD High pressure

10
26_03_01_0077
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26_03_01_0079
Heating curve diagram
One heating curve respectively can be adjusted for EB>QFKD@FO@RFQ and
EB>QFKD@FO@RFQ. At the factory, heating curve  is set up for heating circuit 1 and heating
curve  for heating circuit 2.
These heating curves relate to a set room temperature of 20 °C.
Adjustment of programmed changeover between day/setback mode
The figure shows a standard heating curve with a slope of 0.8, relative to a set room
temperature for day mode of 20 °C. The lower curve represents the setback curve. For this, the
set room temperature for setback mode of 15 °C is used, in other words the heating curve is
subjected to a parallel offset.
Matching a heating curve to actual conditions
Example:
During spring and autumn, the return or flow temperature of a heating system is too low at an
outside temperature between 5 and 15 °C, but is OK at outside temperatures of
≤ 0 °C. This problem can be remedied with parallel offset 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 at 23.2 °C.
Heating circuit 1, HP return temperature [°C] Heating circuit 2, HP flow temperature [°C]
HP return temp. / flow temp. [°C]
Day mode
Setback operation
Outside temperature [°C]
HP return temp. / flow temp. [°C]
Modified heating curve
Outside temperature [°C]
Outside temperature [°C]
26_03_01_0078
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Heating curves
The '3&"415$ parameter enables you to
adjust one heating curve each for heating
circuit 1 and 2. Selecting the correct heating
curve is therefore vitally important.
Note: Your contractor will have set up a
building and system-specific optimum
heating curve for every heating circuit. It
relates to the HP return temperature for
heating circuit 1 and to the mixer flow
temperature for heating circuit 2.
When adjusting the heating curve on WPMi,
the calculated set return or flow temperature,
which is subject to the outside temperature
and the set room temperature, will be shown
at the top of the display.
As soon as a temperature has been pre-
selected via the fixed temperature parameter
at control level 3, heating circuit 1 will be
hidden, and the display will show %(7$#
3$,/ with the relevant temperature.
Based on 20 °C
outside temp
Based on 0 °C outside
temp
Based on -20 °C
outside temp
Based on 20 °C
outside temp
Based on 0 °C outside
temp
Based on -20 °C
outside temp
Day mode Heating circuit 1
Setback operation
C26_03_01_0076

11
Open the control flap
'3&"415$
! "*
'3&"415$
Heating programs
The '3&/1.& parameter enables you to
adjust associated heating programs for
heating circuit 1 and 2 respectively.
You can adjust your heating system as follows:
– for each individual day of the week
(,LK >V2RK >V)
– Monday to Friday (,.-=%1()
– Saturday and Sunday (2 3=24-)
– the whole week (,.-=24-)
You can adjust three switching time pairs
(I, II, III) for each of these options.
This determines, when and how often the
heat pump system should heat in day mode.
At all other times, the heat pump operates in
setback mode. You will already have selected
the corresponding set values for day and
setback mode under parameter
1..,3$,/.
Example: For heating circuit 1, your heating
system should operate daily from Monday to
Friday at two different times, i.e. from 05:30
h until 08:30 h as well as from 14:00 h until
22:00 h. At the weekend, your heating system
should provide heat from 08:30 h until
21:00 h.
Open the control flap
Heating circuits
1 or 2
'3&/1.&
'$ 3"(1"4(3
,.-=%1(
'$ 3(-&23 13@
'$ 3(-&23./"
'$ 3(-&23 13@
2 3=24-
'$ 3(-&23 13@
'$ 3(-&23./"
'$ 3(-&23 13@
'$ 3(-&23./"
'$ 3(-&23 13@

12
DHW programs
The #'6/1.& parameter enables you
to adjust the times for the day and night
temperatures for DHW heating.
You can adjust your DHW heating as follows:
– for each individual day of the week
(,LK >V2RK >V)
– Monday to Friday (,.-=%1()
– Saturday and Sunday (2 3=24-)
– the whole week (,.-=24-)
You can adjust three switching time pairs
(I, II, III) for each of these options.
Exception:
You will need two switching time pairs, if you
want to heat DHW from 22:00 h until
06:00 h the following day. This determines,
when and how often the heat pump system
should heat up DHW in day mode. You will
already have selected the corresponding set
values for day and setback mode under the
#'63$,/ parameter.
Example:
You want to heat up DHW daily at two different
times, i.e. from 22:00 h until 06:00 h the
following day, and then again from 08:00 h
until 09:00 h.
The day begins at 00:00 h; therefore begin
programming for this example at 00:00 h. The
first switching times pair runs from
00:00 h until 06:00 h. The second switching
times pair runs from 08:00 h until 09:00 h. The
third switching times pair runs from 22:00 h
until 24:00 h.
Open the control flap
#'6/1.&
,.-=24-
#'623 13"
#'623./"
#'623 13"
#'623./"
#'623 13"
#'623./"
,.-=24-
! "*
#'6/1.&
'$ 3(-&23 13@
2 3=24-
! "*
! "*
'3&/1.&

13
1.9 FE 7 remote control
E-185579-0035
With the FE 7 remote control, the following
options are available:
- changing the set room temperature for
heating for heating circuit 1 or 2 by ± 5°C.
- changing the operating mode.
It offers the following controls:
- one rotary selector for changing the set
room temperature
- one rotary selector with the following
positions
Automatic mode
Constant setback mode
Constant day mode
The remote control is only effective,
when the WPMi is in automatic
mode.
1.10 FEK remote control
The FEK is always required for
operating in conjunction with area
cooling, e.g. underfloor heating systems,
etc. Apart from the room temperature, it
also determines the dew point temperature
to prevent the formation of condensate.
E-220193-0109
With the FEK remote control, the following
options are available:
- changing the set room temperature for
heating for heating circuit 1 or 2 by ± 5°C.
- changing the operating mode.
It offers the following controls:
- one rotary selector for changing the set
room temperature
- one „Away“ button
- one „Info“ button
- one key to select the following operating
modes:
Standby mode
Automatic mode
Constant day mode
Constant setback mode
When the FEK is preset to one
specific heating circuit, then
the parameters heating curve, room
temperature and heating program are
hidden at the heat pump manager WPMi.
Heating and DHW programs
You may enter your own individual programs into the following tables.
Standard settings
At the factory, the heat pump manager is programmed with the following standard settings:
Switching times 1) for heating circuit 1 and heating circuit 2 H1 / H2 (day mode)
Monday - Friday 6:00 h - 22:00 h
Saturday - Sunday 7:00 h - 23:00 h
ROOM TEMP 1/2 2)
Room temperature in day mode 20 °C
Room temperature in setback mode 20 °C
DHW program switching times
Monday - Sunday 3) 0:00 h - 24:00 h
DHW temperature
DHW DAY T 47 °C
DHW SETBACK T 10 °C
Heating curve slope
Heating curve 1 0.6
Heating curve 2 0.2
1) Only for switching times pair 1; switching time pairs 2 and 3 are preprogrammed.
2) Stiebel Eltron recommends systems without night setback; our systems are set up accordingly.
3) Due to favourable heat pump tariff, when heating up during the night.
Heating circuit 1
Switching times pair I Switching times pair II Switching times pair III
Mo
Tu
We
Th
Fr
Sa
Su
Mo - Fr
Sa - Su
Mo - Su
Heating circuit 2
Switching times pair I Switching times pair II Switching times pair III
Mo
Tu
We
Th
Fr
Sa
Su
Mo - Fr
Sa - Su
Mo - Su
DHW program
Switching times pair I Switching times pair II Switching times pair III
Mo
Tu
We
Th
Fr
Sa
Su
Mo - Fr
Sa - Su
Mo - Su

14
Fig.1
2. Installation instructions for contractors
2.1 Equipment layout WPC
/// 1/// /13(
'+&
:3
6ROHSXPSH
12 356
4
10
15
18
38
27
24
28
35
30
31
29
14
34
25
33
16
17
13
7
22
21
12
11
23
36
39
37
8
40
9
26_03_01_0081C
42
1 Brine outlet
2 Brine inlet
3 Heating return
4 Safety assembly (included in the pack)
5 Heating flow
6 Hot water
7 Cold water
8 Diverter valve (DHW)
9 Dirt filter (heating water)
10 Condenser
11 Temperature sensor, return
12 High pressure limiter
13 Temperature sensor, hot gas limiter
14 Heating circuit pump /
buffer cylinder primary pump
15 Fill & drain valve (heating)
16 Temperature sensor, DHW
17 DHW cylinder
18 Fill & drain valve (DHW cylinder)
21 Power connection
22 High limit safety cut-out (electric booster
heater)
23 Rating plate
24 Fill & drain valve (brine)
25 Expansion valve
27 Compressor
28 Brine pump
29 Electric booster heater
30 Dirt filter (brine)
31 Low pressure limiter
33 Temperature sensor (brine inlet)
34 Evaporator
35 Temperature sensor heat pump flow
36 Fill & drain valve (DHW indirect coil)
37 Signal anode
38 Pressure switch
39 Anode
40 Pressure limiter
42 Temperature and pressure relief valve

15
2.2 Specification
Performance data apply to new units with clean heat exchangers.
The power consumption of the integral auxiliary drives (brine circuit pump, heating circuit pump or fan) is stated as a maximum and may vary, subject
to operating point.
The power consumption of the integral auxiliary drives is already included in the output details of the heat pump, as specified by the EN 14511.
  qTÑZ& qTŌZ& qTĜƃZ&
230431 230432 230433
Outputs to EN 14511
Output for B0/W35 (EN 14511) kW 5,8 7,7 9,9
Power consumption
Max. power consumption, circulation pump, source side W 140 140 140
Max. power consumption, circulation pump, heating side W 93 93 93
Power consumptions to EN 14511
Power consumption for B0/W35 (EN 14511) kW 1,35 1,8 2,4
Power consumption - booster heater kW 6,2 6,2 6,2
Coefficients of performance to EN 14511
Coefficient of performance for B0/W35 (EN 14511) 4,3 4,4 4,5
Sound data
Sound power level (EN 12102) dB(A) 52 50 56
Sound pressure level at 1 m distance in a free field dB(A) 35 42 48
Sound pressure level at 5 m distance in a free field dB(A) 32 28 34
Application limits
Min. application limit on the heating side °C 15 15 15
Max. application limit on the heating side °C 60 60 60
Heat source application limit (max.) °C 20 20 20
Heat source application limit (min.) °C -5 -5 -5
Electrical details
Frequency Hz 50 50 50
Fuse - compressor A 1 x C 25 1 x C 25 1 x C 25
Control circuit fuse A 1 x C 16 1 x C 16 1 x C 16
Fuse - electric booster + compressor (L1, L2, L3) A 1 x C 35 1 x C 35 1 x C 35
Compressor phases 1/N/PE 1/N/PE 1/N/PE
Control phases 1/N/PE 1/N/PE 1/N/PE
Heater element phases 1/N/PE 1/N/PE 1/N/PE
Rated compressor voltage V 230 230 230
Rated control voltage V 230 230 230
Rated voltage, heater element V 230 230 230
Starting current A 29 32 41
Versions
Refrigerant R410 A R410 A R410 A
Dimensions
Height mm 2100 2100 2100
Width mm 600 600 600
Depth mm 650 650 650
Height of unit when tilted mm 2100 2100 2100
Cylinder capacity l 175 175 162
Weights
Weight (dry) kg 283 293 303
Weight (wet) kg 445 458 465
Connections
Heat source flow/return plug-in connection 28 mm 28 mm 28 mm
DHW flow/return plug-in connection 22 mm 22 mm 22 mm
Heating flow/return plug-in connection 22 mm 22 mm 22 mm
Rated heating flow rate m³/h 0,73 0,97 1,18
Heating flow rate (EN 14511) m³/h 1,03 1,36 1,66
Values
Refrigerant capacity kg 1,6 2,0 2,6
Permissible operating pressure, cylinder MPa 1 1 162
Flow rate, heat source side m³/h 1,6 2,0 2,2
Heating flow rate (min.) m³/h 0,51 0,68 0,83
Permissible operating pressure - heating circuit MPa 0,3 0,3 0,3
External pressure differential, heating side hPa 520 460 380
External pressure differential, source side hPa 600 600 540

16
2.3 Standard delivery
WPC 5 S GB Set Description Part no.
WPC 5 S GB 227541
Installations Set 22 Cu 228932
MAG 24 TW 229941
WPC 7 S GB Set Part no.
WPC 7 S GB 227542
Installations Set 22 Cu 228932
MAG 24 TW 229941
WPC 13 S GB Set Part no.
WPC 13 S GB 227543
Installations Set 22 Cu 228932
MAG 24 TW 229941
2.2.1 Specification - control unit (WPMi)
Supply voltage 230 V ~ ± 10 %, 50 Hz
Power consumption Max. 8 VA
EN 60529 Protection IP 1XB
EN 60730 Class II
Function type 1B
Software - class A
Clock backup, day > 1 day
Permiss. ambient temp. during operation 0 to 50 °C
Permiss. ambient temp. during storage -30 to 60 °C
Sensor resistances Test resistance at 2000 Ω
Communication system RS232 (optical), CAN
Max. relay output capacities
Buffer primary pump 2 (1.5) A
Heating circuit pump 2 (1.5) A
Mixer circuit pump 2 (1.5) A
DHW primary pump 2 (1.5) A
DHW circulation pump 2 (1.5) A
Source pump 2 (1.5) A
Contact HS 2 2 (1.5) A
Mixer 2 (1.5) A
Max. total relay output capacity 10 (8) A
2.4 Special accessories
Description Part no.
Extract module LWM 250 189999
Active cooling module WPAC 2 (only WPC) 221358
Cylinder SBP 100 Comfort 185443
Cylinder SBP 200 E 185458
Cylinder SBP 400 E 220824
Cylinder SBP 700 E 185459
Cylinder SBP 700 E SOL 185460
WPSV 25-4 (brine distributor) 220386
WPSV 32-4 (brine distributor) 220387
WPSV 40-4 (brine distributor) 220389
WPSV 25-6 (brine distributor) 220390
WPSV 32-6 (brine distributor) 220391
WPSV 40-6 (brine distributor) 220392
MAG 12 (brine expansion vessel) 189981
Remote control FE 7 185579
Remote control FEK 220193
Contact sensor AVF 6 165341
Immersion sensor TF 6 165342
Concentrated process medium 161696
Ready-mixed process medium (potassium carbonate) 185472

17
Fig. 3
Output diagram WPC 7 S GB
Fig. 2
     
&
(WK\OHQJO\NRO:DVVHUJHPLVFKPLW 9RO(WK\OHQJO\NRO
 9RUODXIWHPSHUDWXU &9ROOODVW  9RUODXIWHPSHUDWXU&9ROOODVW  9RUODXIWHPSHUDWXU&9ROOODVW
      

 
 
     
&
(WK\OHQJO\NRO:DVVHUJHPLVFKPLW 9RO(WK\OHQJO\NRO
 9RUODXIWHPSHUDWXU &9ROOODVW  9RUODXIWHPSHUDWXU&9ROOODVW  9RUODXIWHPSHUDWXU&9ROOODVW
      

 
 
26_03_01_0082
26_03_01_0083
1 = Flow temperature 35°C Full load 2 = Flow temperature 50°C Full load 3 = Flow temperature 60°C Full load
Ethyleneglycol / water mixture with 33% Ethyleneglycol
Performance factor HHP Power consumption PHP Heat Output Q
.
HP
Inlet temperature of Source Medium
1 = Flow temperature 35°C Full load 2 = Flow temperature 50°C Full load 3 = Flow temperature 60°C Full load
Ethyleneglycol / water mixture with 33% Ethyleneglycol
Performance factor HHP Power consumption PHP Heat Output Q
.
HP
Inlet temperature of Source Medium
Output diagram WPC 5 S GB

18
     
&
(WK\OHQJO\NRO:DVVHUJHPLVFKPLW 9RO(WK\OHQJO\NRO
 9RUODXIWHPSHUDWXU &9ROOODVW  9RUODXIWHPSHUDWXU&9ROOODVW  9RUODXIWHPSHUDWXU&9ROOODVW
      
  
 
Output diagram WPC 10 S GB
Fig. 4
26_03_01_0084
1 = Flow temperature 35°C Full load 2 = Flow temperature 50°C Full load 3 = Flow temperature 60°C Full load
Ethyleneglycol / water mixture with 33% Ethyleneglycol
Performance factor HHP Power consumption PHP Heat Output Q
.
HP
Inlet temperature of Source Medium

19
2.5.2 WPC function
The heat source medium brine enters the heat
pump evaporator (19). There, heat is extracted
from the medium, so it exits the heat pump at
a lower temperature.
The energy made available by the heat pump
is transferred to the heating water inside the
condenser (9).
The heating water subsequently transfers its
energy to the heating circuit or is diverted, via
the three-way valve (7), to the indirect coil (13)
integrated into the DHW cylinder (14).
The electric booster heater (8) (internal HS 2)
starts, when the high pressure sensor or hot
gas limiter respond during DHW heating.
In addition, it can cover the residual heat
demand, when the heating system heat
demand exceeds the heat pump output.
The booster heater is equipped with a safety
temperature limiter that shuts down at 85 °C.
Fig. 5
2.5 Equipment description WPC
2.5.1 Function diagram
1 Brine outlet
2 Brine inlet
3 Heating return
4 Heating flow
5 Hot water
6 Cold water
7 Diverter valve
8 Electric booster heater (internal HS 2)
9 Condenser
10 Frost protection
11 High pressure limiter
12 Compressor
13 Heat exchanger
14 DHW cylinder
15 Expansion valve
16 Filter dryer
17 Low pressure sensor
18 Condensate tray
19 Evaporator
20 Heating circulation pump
21 Brine circulation pump
26_03_01_0086
     
SS S










 





20
2.6 Operation and control
Contractors only!
The WPMi heat pump manager integrated into
the equipment regulates the entire heating
system. All necessary adjustments prior and
during operation are made on this device.
Only qualified contractors must make
adjustments listed in the commissioning
report of the heat pump manager.
The system must not be shut down
during summer, as the WPMi is
provided with an automatic summer/winter
changeover facility. Set the WPMi to standby
when the system is taken out of use. This
retains the safety functions designed to
protect the system (e.g. frost protection).
Drain the entire heating system on the water
and the brine side, if the heat pump system
is isolated from the power supply, when the
equipment is taken out of use. For this, open
the upper door and remove the lower one
(Fig. 9). You can drain the system using the
following fill & drain valves (see Fig. 1):
– Item 15, heating side
– Item 18, DHW cylinder
– Item 24, brine side
– Item 36, DHW cylinder; indirect coils
2.7 Safety
Only qualified contractors should carry out
installation, commissioning, maintenance and
repair of the appliance.
2.7.1 General safety instructions
We guarantee trouble-free operation and
operational reliability only if the original
accessories and spare parts intended for the
appliance are used.
2.7.2 Instructions, standards and regulations
Observe all applicable national
and regional regulations and
instructions.
2.8 Maintenance and cleaning
Contractors only!
zWhenever working on built-in electrical
components, disconnect everything from
the mains.
zRegularly vent the safety valve until water
streams from it. Close the safety valve after
checking.
zCheck the T&P valve for tightness.
zThe heat pump operates under automatic
control and requires no specific
maintenance.
zIf heat meters are installed, frequently
clean their strainers, which block easily.
zWhen the heat pump operation is
impaired (high pressure limiter trips)
through deposits of corrosion by-products
(rust sludge) inside the condenser, only
dissolving them by means of solvents used
by our customer service will remove this
problem.
zRemove sieves from the dirt traps
The dirt traps items 9 and 30 in Fig. 1 have
been integrated to protect the moving parts
of the heat pump from dirt. To reduce the
pressure drop and consequently prevent a
reduction in pump rate, these sieves can
be removed as long as you can ensure that
no dirt can enter the heating system. For
this close the ball valve, undo the cap, and
remove the sieves after removing the lock-
ing ring.
As long as the sieves are still dirty,
clean and re-insert the sieves.
Only once the sieves stay clean after the
pumps have been operating for some time
is the heating system or the source system
free from contaminants, giving you the
choice of removing the sieves.
DHW cylinder information:
zCleaning and de-scaling
After removing the flange plate, you can
clean the cylinder through the inspection
aperture.
Never use de-scaling pumps. Never treat
the enamel and the protective anode with
descaling agents.
zDraining the cylinder:
– Close the shut-off valve in the cold water
supply.
– Fully open the hot taps at all draw-off
points.
– Use the drain valve to drain the cylinder
(item 18, Fig. 1). Residual water remains in
the lower part of the cylinder.
Hot water can be expelled during
draining.
zReplacing the anodes
Check the anodes and replace them, as
soon as the red signal indicator illuminates
in the control array.
Never interchange the anodes.
Fig. 1 Signal anode (37) with
pressure switch hole (38), part no. 264864.
Always seal-in the pressure switch when
replacing the signal anode.
Anode (39) without hole, part no. 264984.