STIEBEL ELTRON WPF 5 User manual

WPF 5 (S), WPF 7 (S), WPF 10, WPF 13
Water/water heat pump
Brine/water heat pump
Operating and installation instructions
8273.02
Index
1. Operating instructions
for users and contractors 2
1.1 Equipment overview
1.2 Equipment description 2
1.3 Operating / installation instructions 2
1.4 Maintenance and care 2
1.5 Important information 3
1.6 Operation 3
1.7 What to do if ...? 3
1.8 Adjustments 4
1.9 Remote control FE 7 12
2. Installation instructions
for contractors 13
2.1 Equipment layout 13
2.2 Accessories 13
2.3 Special accessories 13
2.4 Specification 14
2.5 Operation and control 15
2.6 Maintenance and cleaning 15
2.7 Equipment description 20
2.8 Instructions and regulations 20
2.9 Installation 20
Wiring diagram 26 - 29
2.10 Commissioning 30
2.11 Commissioning (contractors) 32
2.12 Commissioning (details) 31
2.13 Troubleshooting 38
2.14 Commissioning list 41
The installation (water and electrical) and commissioning, as well as the maintenance of this equipment, must only be carried out by an author-
ised qualified contractor, in accordance with these instructions.
264759

2
1. Operating instructions for users and contractors
1.2 Equipment description
WPF is a heating system which is designed for
operation as brine/water or water/water heat
pump. The heat pump extracts energy from
the heat source medium i.e. brine or water at
a low temperature level. This extracted energy
is then transferred to the heating water at a
higher level, enriched with the energy trans-
ferred 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 WPF, a heating circuit pump and a
three-way valve have been integrated for di-
verting the flow either to the heating circuit or
the DHW circuit. DHW is heated by pumping
the heating water, which has been heated by
the heat pump, through a heat exchanger into
the DHW cylinder, where it transfers its en-
ergy to the DHW.
The WPF is regulated by an integral, weather-
compensated return temperature controller.
This controller also regulates the DHW heat-
ing to the required temperature. If, during
the DHW heating process, temperatures are
required which are higher than the maximum
heat pump flow temperature, then the DHW
heating is automatically completed by an inte-
gral electrical supplementary heater (internal
second HS).
BCG DEF
A
A Display
B Rotary selector
C Rotary selector Reset / Auto
D Programming key
E Programming indicator
F Optical interface RS 232
G Control flap (open)
System 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 loading
6 Compressor 1
7 Buffer cylinder loading pump 1
8 Compressor 2
9 Buffer cylinder loading pump 2
10 Heat source 2 (central heating)
11 Equipment menu
6
7
8
9
10
1
2
3
4
5
11
7471.02
1.1 Equipment summary
1.3 Operating and
installation instructions
Subject to the relevant system, observe the
operating and installation instructions of the
components of which the system comprises.
Keep these operating and instal- lation instructions safely and pass
them on to any new user, should the
equipment change hands, and let your
contractor check their content in conjunc-
tion with required maintenance and repair
work.
1.4 Maintenance and care
Maintenance work, e.g. checking
the electrical safety, must only be
carried out by qualified personnel. Protect
the equipment from dust and dirt ingress
during building work.
A damp cloth is sufficient for cleaning all plas-
tic parts. Never use scouring or solvent-based
cleaning agents.
Summary of available functions
 RS 232 interface for adjustment and
monitoring via PC
 The three-wire databus enables rapid
installation and system extension using
the MSM mixer module
 Control of a second heat generator for
DHW and central heating
 9 temperature inputs as set/actual value
display
 Demand-depended control of seven dif-
ferent circulation pumps
 Input of the system and heat pump frost
protection limits
 At least 10 h backup power for the
clock
 Automatic kick-start pump control
 Reset option
 Stored error list with precise fault code
indication, together with date and time
display
 Rapid and accurate fault diagnostics
using system analysis including tempera-
ture scan for heat pump and peripheral
equipment without additional equip-
ment.
 Factory settings for time switch pro-
grams for all heating and DHW circuits
 Integral solar differential controller or
heat meter
Roomtemp 1
Roomtemp 2
Temp DHW.
Day / Hour
Holiday / Partyprog.
Info temp
Heating curve
Heating prog.
Prog. Acqua San.
First Start-up
Room Temp 1

3
1.5 Important information
Heat pumps must only be installed
and maintained by qualified con-
tractors.
Heat pump types
The description of individual functions var-
ies between the different heat pump types.
Therefore different types of heat pump are
determined, which are identified as
HP type 1, 2 or 3.
HP type 1: (Not this Heat Pump)
Heat pump with flammable refrigerant and
without internal secondary heater.
Rotary selector position 1, 2, 3, 9, A or B.
(WPWE .. KW and WPL .. KW)
HP type 2:
Heat pumps with safety refrigerant and in-
ternal second HS (Heat Source).
Rotary selector position 1.
(WPF 5 (S), 7 (S), 10, 13)
HP type 3:
Heat pumps with safety refrigerant and ex-
ternal second HS (Heat Source).
Rotary selector position 9.
(WPF 5 (S), 7 (S), 10, 13)
Never ...
 process media which are not ex-
pressly approved
 heat liquids other than heating water
 install the equipment
a) outside
b) in rooms at risk from frost
c) in wet areas, e.g. bathrooms
d) in rooms at risk from heavy dust
contamination
e) in areas, where there is a risk of
explosions
 operate the equipment
a) outside the stated temperature
limits
b) without minimum circulation
volume at the heat source and
heat reduction side
1.6 Operation
The operation is split over three control lev-
els. Control levels 1 and 2 are accessible to
users and contractors alike. Control level 3 is
only designed for qualified contractors:
Control level 1 (control flap closed)
This enables the adjustment of operating
modes, such as standby mode, programmed
operation, constant day or setback mode, etc.
(see section 1.8.1).
Vital facts in brief
Adjustments
All adjustments follow the same pattern:
Opening the control flap toggles the man-
ager into programming mode. An indica-
tor symbol is shown at the bottom of
the display at system parameter ROOM
TEMP 1.
Turning the rotary selector allows you
to move the indicator to the system pa-
rameter you want to change.
Press to change the system parameter.
Whenever the red indicator above illu-
minates, you can modify the current value
by turning the rotary selector . Press
again; the illuminator then goes out and
the new set value has been saved. You can
modify further values for this menu item
by pressing , if the red indicator has not
been extinguished above .
The programming step can only be ter-
minated when the red indicator has gone
out.
Terminating the programming process
You can terminate the programming proc-
ess after entering and saving the require
menu point changes by closing the control
flap. However, if you want to make further
changes, turn the rotary selector until
the display shows BACK, then press
This will return you to the previous level.
Closing the control flap with illuminated in-
dicator above returns the manager into
its original position. The modified value will
not have been saved.
During commissioning, a system
check will be implemented, e.g. all
sensors that are currently connected, are
displayed upon request. Sensors not con-
nected before the system went 'live' are
not registered by the manager and are
therefore not displayed. The indicator sym-
bol skips the system parameter.
Example: The system parameters DHW
TEMP and DHW PROG will be skipped if,
during commissioning, the DHW cylinder sen-
sor was not connected. Values for these pa-
rameters can therefore not be programmed.
1.7 What to do if . . . ?
. . . there is no hot water or the heating sys-
tem 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.
Notify your local contractor in case of all other faults.
Control level 2 (control flap open)
This enables system parameters, such as room
temperature, DHW temperature, heating pro-
grams, etc. to be adjusted (see section 1.8.2).
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 deter-
mined (see section 2.10).

4
Display (showing all elements)
14-digit plain text display
Compress run
Heating times for central heating and DHW (black)
2. HS RUN
Switching time pairs for central heating and DHW operation
DEFROST
Day mode HC 1
Setback mode for heating circuit 1
1.8 Adjustments
1.8.1 Operating modes
(control level 1)
The operating modes are changed by pressing
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 per-
manently set to 10 °C; the set central
heating flow temperature is calculated in
relation to a set room temperature of
5 °C, see point 3.
Application: During holidays.
Automatic mode
Heating subject to time switch program
(applies to HC 1 and HC 2), changeover
between day temperature and setback
temperature. DHW in accordance with
a time switch program; changeover
between day temperature and setback
temperature, see point 4.
With this operating mode, an additional
symbol (sun or moon) indicates, wheth-
er heating circuit 1 is currently in day or
in setback mode.
The remote control is only active in this
mode.
Application: If you need heating and
DHW.
Constant day mode
The heating circuits HC1 and HC2 are
constantly held at the day temperature.
DHW according to time switch pro-
gram.
Application: In low energy houses with-
out setback operation.
Constant setback mode
The heating circuit is constantly held at
the setback temperature (applicable to
HC 1 and HC 2). DHW according to
time switch program.
Application: During weekends away.
DHW mode
DHW in accordance with a time switch
program; changeover between day tem-
perature and setback temperature. Frost
protection is activate for central heating
operation.
Application: The heating period ends;
only DHW should be generated (sum-
mer mode).
Heat source 2 (HS 2)
This setting activates the emergency op-
eration. With HP type 2, HS 2 provides
central heating and DHW heating during
this operating mode, irrespective of the
dual-mode changeover point.
For HP type 3, HS 2 for heating or
DHW must be set to ON at control
level 3; only then can this operating
mode be selected. With this operating
mode, HS 2 takes over the heating or
DHW function, independent of the dual-
mode changeover point.
Fault message (flashing)
Indicates faults in the heat pump system.
Notify your local contractor.
Heat source 2 (emergency work)
DHW operation
Constant setback mode
Constant day mode
Automatic mode
Standby mode
Fault message (flashing)

5
With the menu item ROOM TEMP 1 you can select the SET ROOM TEMP for day and setback
mode for heating circuit 1.
The actual room temperature can also be scanned, as soon as the FE 7 remote control has been
connected and allocated to heating circuit 1.
With the menu item ROOM TEMP 2 you can select the SET ROOM TEMP for day and setback
mode for heating circuit 2. ROOM TEMP 2 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 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
menu item DHW TEMP
You can adjust the time and summer time with the TIME/DATE menu item.
At the factory, summer time is set up to begin on the 25 March and to end on the 25 October.
The HOLIDAY PROG menu item puts the heat pump system into setback mode. Frost protec-
tion is activated for the DHW cylinder.
The PARTY PROG menu item allows you to extend the day mode by a few hours.
The HTG CURVE menu item 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 HTG PROG menu item enables you to adjust associated heating programs for heating circuit
1 and 2 respectively.
The DHW PROG menu item enables you to adjust the times for the day and setback tempera-
tures for DHW HTG.
The menu item INFO TEMP 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 commissioning process, determine not only the adjustments 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 on the commissioning report.
1.8.2 Overview of system parameters (control level 2)
Select the required menu point with the rotary selector.
For adjustments to menu items, turn to page 6.
Roomtemp HC1
Roomtemp HC 2
DHW TEMP
Time / Date
Holiday/Party
Temperatures
hEATING cURVES
hEATING Progs
dHw Prog
fIRST START UP

6
Room temperature HC 1
With the menu item ROOM TEMP 1 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 remote control
has been connected and allocated to heating
circuit 1.
DHW temperature
You can allocate a set day or night tempera-
ture to the DHW cylinder temperature using
the DHW TEMP menu item.
Open the control flap.
Open the control flap.
Room temperature HC 2
With the menu item ROOM TEMP 2 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. ROOM
TEMP 2 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 remote control
has been connected and allocated to heating
circuit 2.
Open the control flap.
Adjustments at control level 2 for users and contractors
Roomtemp HC1
SET Roomt 1
SET Roomt DAY
SET Roomt NIGHT
SET Roomt NIGHT
Roomtemp 1
Back
Roomtemp HC1
Roomtemp HC2
Set Roomt DAY
Set Roomt DAY
Set Roomt night
SET Roomt night
Actual Roomtmp
Back
roomtemp hc2
DHW TEMP
SET DHW DAY
SET DHW DAY

7
Time and date
You can adjust the time and summer time
with the TIME/DATE menu item.
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
Holiday and party program
In holiday mode, the heat pump system oper-
ates in setback mode, and 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 op-
erates again in accordance with the previous
heating and DHW program.
In party mode you can extend day mode
for central heating by a few hours. This is dis-
played 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 set-
back mode would only begin at 24:00 h.
Open the control flap.
SET DHW NIGHT
SET DHW NIGHT
ACTUAL DHWTMP
back
DHW TEMP
TIME / DATE
SET CLOCK
TIME
TIME
YEAR
MONTH
DAY
SET CLOCK
back
time / date
Holiday/Party
Holiday
Year Start
MONTH Start
DAY Start

8
Info temperatures
The menu item INFO TEMP enables you to
scan the heat pump or heat pump system
sensor temperatures, comparing set with ac-
tual values, the heating curve gap, etc. In all, the
following 22 parameters can be scanned:
– Outside temperature
– Actual room temperature (HC 1/HC 2)
(will only be displayed if the FE 7 remote
control is connected)
– Set room temperature (HC 1/HC 2)
(will only be displayed if the FE 7 remote
control is connected)
– Actual DHW temperature
– Set DHW temperature
– Actual HP return temperature (HC 1)
– Set HP return temperature (HC 1)
The fixed temp. will be displayed for
fixed temperature control
– Actual mixer flow temperature (HC 2)
– Actual mixer flow temperature (HC 2)
– Fixed HP return temperature
– Set buffer temperature
Highest set value of heating circuits
H1, H2, H3 if MSM is installed. Fixed
temperature will be displayed for fixed
temperature control)
– Actual HP flow temperature
– Set DHW flow temperature
– Set heating flow temperature
– Actual source flow temperature
– Set source flow temperature
– CHG PT HTG
– CHG PT DHW
– Heating limit temperature
– Limit temperature DHW
– System frost protection temperature
– Frost protection temperature IWS 1 to
IWS 6
Open the control flap.
Heating curves
The HTG CURVE menu item 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 hea-
ting 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 WPM,
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-se-
lected via the fixed temperature parameter at
control level 3, heating circuit 1 will be hidden,
and the display will show FIXED TEMP with
the relevant temperature.
Year STOP
Month STOP
Day STOP
Holiday
Back
Holiday / Party
Note: Actual or set temperatures will not
be displayed, if the corresponding sensor is
not connected.
Temperatures
Outdoor
Back
Temperatures
9071.01
Based on 20°C
Outdoor temp
Based on 0°C
Outdoor temp
Based on -20
Outdoor temp
Set-Back operation
Day operation Heating Circuit 1
Based on +20°C
Outdoor temp
Based on 0°C
Outdoor temp
Based on -20
Outdoor temp

9
Heating curve diagram
One heating curve respectively can be adjusted for heating circuit 1 and heating circuit 2.
At the factory, heating curve 0.6 is set up 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.
9072.01
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 tem-
perature 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.
Open the control flap.
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.
9073.01
9074.01
Heating Curves
Back
Heating Curves
Heating Circuit 1, HP Return temperature [°C] Heating Circuit 2, HP Flow temperature [°C]
HP Return temp. / Flow temp. [°C]
Day operation
Set-back operation
Outdoor temperature [°C]
HP Return temp. / Flow temp. [°C]
modified Heating curve
Outdoor temperature [°C]
Outdoor temperature [°C]

10
Heating programs
The HTG PROG menu item 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
(Monday, ..., Sunday)
– Monday to Friday (Mo - Fr)
– Saturday and Sunday (Sa - Su)
– the whole week (Mo - Su)
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 set-
back mode under menu item
ROOM TEMP 1/2.
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. For 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
Heating PROG
Heat Circuit 1
Mon to FRI
HEAT START 21C
Heat STOP 21C
Heat START 21C
Heat STOP 21C
Heat START 21C
SAT to SUN
Heat START 21C
Heat STOP 21C
Heat START 21C
Heat START 21C
SAT to SUN
BACK
BACK
HEATING PROG

11
DHW programs
The DHW PROG menu item enables you to
adjust the times for the day and night tem-
peratures for DHW heating.
You can adjust your DHW heating as follows:
– for each individual day of the week
(Monday, ..., Sunday)
– Monday to Friday (Mo - Fr)
– Saturday and Sunday (Sa - Su)
– the whole week (Mo - Su)
You can 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/load DHW in day mode. You will already
have selected the corresponding set values for
day and setback mode under the DHW TEMP
system parameter.
Example:
You want to heat up DHW daily at two dif-
ferent 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 until
06:00 h. The second switching times pair runs
from 08:00 until 09:00 h. The third switching
times pair runs from 22:00 until 24:00 h.
Open the control flap.
DHW PROG
MO to SUN
DHW START 45C
DHW STOP 45C
DHW START 45C
DHW STOP 45C
DHW START 45C
DHW STOP 45C
MON to SUN
Back
DHW PROG

12
The FE 7 remote control enables you to
change the set room temperature for heating
circuit 1 or heating circuit 2 by ± 5 °C, as well
as the operating mode.
The remote control offers the following:
• one rotary selector for modifying the set
room temperature
• one rotary switch with the following po-
sitions:
Programming mode
Constant setback mode
Constant day mode
The remote control is only active in the WPM
programmed mode.
1.9 FE 7 remote control
Heating and DHW programs
You may enter your only individual programs into the following tables.
Standard settings
At the factory, the heat pump manager is programmed with the following standard settings:
Switching times1) for heating circuit 1 and heating circuit 2 H1 / H2 (day mode)
Monday - Friday 6:00 - 22:00
Saturday - Sunday 7:00 - 23:00
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) 22:00 - 6:00 and 8:00 - 10:00
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 pre-programmed.
2) Stiebel Eltron recommends systems without night setback; our systems are set up accordingly.
3) 22:00 - 6:00 (night heat-up to take advantage of favourable HP tarifs)
8:00 - 10:00 (heat-up after DHW is drawn off in the morning)
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

13
2.1 Equipment layout
2.3 Special accessories
Description Part no.
Pressure hose G 1¼" x 1 m (DN32) 07 44 14
Pressure hose G 1¼" x 2 m (DN32) 18 20 19
Pressure hose G 1¼" x 5 m (DN32) 18 20 20
Pressure hose G 1¼" x 1 m (DN32)
for trimming to size
18 56 47
Hose fittings for pressure hose (DN 32) 07 06 92
Vibration damper G 1¼" x 0.65 m (DN32)
vacuum resistant for well installations
15 42 72
WPKI-H (for cylinder SBP 100) 07 43 14
WPKI-V (for cylinder SBP 100) 07 43 47
WPKI 3 (for cylinder SBP 200 and 700) 07 37 38
Cylinder SBP 100 07 42 50
Cylinder SBP 200 E 18 54 58
Cylinder SBP 700 E 18 54 59
Cylinder SBP 700 E SOL 18 54 60
2. Installation instructions for contractors
DHW cylinder SBP 300 E SOL 07 40 45
DHW cylinder SBP 400 E SOL 07 40 46
WPSB 307 (brine assembly) 07 42 01
WPSB 310 (brine assembly) 07 42 02
WPSB 407 (brine assembly) 07 42 03
WPSV 25-4 (brine distributor) 18 22 52
WPSV 32-4 (brine distributor) 18 22 53
WPSV 25-6 (brine distributor) 18 22 54
WPSV 32-6 (brine distributor) 18 22 55
Concentrated process medium 16 16 96
Ready-mixed process medium 18 54 72
Remote control for heating system FE 7 18 55 79
Contact sensor AVF 6 16 53 41
Immersion sensor TF 6 16 53 42
Fig. 3
8274.04
1 Brine outlet
2 Brine inlet
3 Flow DHW cylinder
4 Heating flow
5 Heating return
6 Safety assembly connection
(included in the pack)
7 Heating circuit pump / buffer cylinder
loading pump
8 High limit safety cut-out - electrical
supplementary heater
(reset button at the back)
9 Electrical supplementary heater
(internal HS 2)
10 Temperature sensor (flow)
11 Temperature sensor (return)
12 Sight glass
13 Evaporator
14 High pressure limiter
15 Filter dryer
16 Fill & drain valve (heating)
17 Fill & drain valve (brine)
18 Expansion valve
19 Compressor
20 Condenser
21 Low pressure limiter
22 Frost protection
23 Temperature sensor (brine inlet)
24 Diverter valve
25 WPM heat pump manager
1 2 3 4 5
6
7
9
11
13
14
15
16
17
18
19
20
22
23
24
25
8
10
12
21
2.2 Accessory (part of the standard delivery)
Quantity Description Part no
1 Outside temperature sensor AFS 2 16 53 39

14
2.4 Specification
Heat pump Type WPF 5 (S) WPF 7 (S) WPF 10 WPF 13
Part no. 07 42 94 (074425) 07 42 95 (074426) 07 42 96 07 42 97
Design and function
Design (Compact / split / open version) Compact
Function Mono-mode
Alternative dual-mode
Parallel dual-mode
Dimensions, weights, connection dimensions
Dimensions H/W/D 960 x 510 x 680 960 x 510 x 680 960 x 510 x 680 960 x 510 x 680
Weight kg 120 130 140 150
Refrigerant type R 410A R 410A R 410A R 410A
Filling weight kg 1.5 2.0 2.5 2.3
Permissible operating pressure MPa 4.3 4.3 4.3 4.3
Pipe connector – heating side Inch G 1¼" male G 1¼" male G 1¼" male G 1¼" male
Pipe connector on the heat source side Inch G 1¼" male G 1¼" male G 1¼" male G 1¼" male
Evaporator material 1.4401/Cu 1.4401/Cu 1.4401/Cu 1.4401/Cu
Condenser material 1.4401/Cu 1.4401/Cu 1.4401/Cu 1.4401/Cu
Compressor Qty. 1 1 1 1
Performance Heat pump (EN 255)
Heat output at W10/W35 1) kW 7.2 10.0 12.5 17,1
at B0/W35 2) kW 5.8 7.8 9.9 13,4
Refrigeration capacity at W10/W35 1) kW 6.0 8.3 10.3 13,9
at B0/W35 2) kW 4.5 6.1 7.8 10,4
Power consumption at W10/W35 1) kW 1.33 1.8 2.27 3,03
at B0/W35 2) kW 1.34 1.78 2.2 3,05
Performance factor at W10/W35 1) 5.4 5.6 5.5 5,6
at B0/W35 2) 4.3 4.4 4.5 4,4
Power consumption of the internal electrical supple-
mentary heater (DHC) kW 8.8 (6,2) 8.8 (6,2) 8.8 8.8
Process medium Brine/water values in [ ]
Process medium hot side/cold side Brine made from water with 33 Vol. % ethylene glycol
Volume flow min. hot side m3/h 0,6 / [0,5] 0,8 / [0,7] 1,1 / [0,9] 1,4 / [1,2]
cold side m3/h 1.5 / [1.4] 2.1 / [1.9] 2.6 / [2.2] 3,4 / [3,1]
Permissible operating pressure (hot and cold side) MPa 0.3 0.3 0.3 0.3
Available ext. pressure difference hot side 3) hPa 280 280 280 280
Internal pressure differential cold side 3) hPa 90 / (100) 100 / (110) 110 / (120) 200 / (230)
Operating temperature limits
WQA min. / WQA max. 4) °C 7 / 20 (–5 / 20) [for short periods (max. 30 min), max. source temp. to 40 °C permiss].
WNA min./WNA max. 4) °C 15 / 60 (15 / 60)
Electrical specification
Fuse Mains compressor A 16 gl (20 gl) 16 gl (20 gl) 16 gl 16 gl
Mains electrical suppl. heater (internal HS 2) A 16 gl (35 gl) 16 gl (35 gl) 16 gl 16 gl
Control circuit A 16 gl (16 gl) 16 gl (16 gl) 16 gl 16 gl
Voltage/frequency - compressor (Triple phase) 3/PE~400/50 3/PE~400/50 3/PE~400/50 3/PE~400/50
Voltage/frequency - compressor (Single phase) 1/N/PE~230/50 1/N/PE~230/50
Voltage/freq. elec. suppl. heater (internal HS 2) (Triple phase) 3/N/PE~400/50 3/N/PE~400/50 3/N/PE~400/50 3/N/PE~400/50
Voltage/freq. elec. suppl. heater (internal HS 2) (Single phase) 1/N/PE~230/50 1/N/PE~230/50
Voltage / frequency – control circuit 1/N/PE~230/50 1/N/PE~230/50 1/N/PE~230/50 1/N/PE~230/50
Start-up current A <30 (<58) <30 (<88) <30 <30
Power consumption compressor + heat source
pump 5) min / max kW 2.0 / 2.9 2.3 / 3.7 2,9 / 4,5 3,5 / 5,9
Power consumption heat source pump max. kW 0,7 0.7 0.7 0.7
Corrosion protection casing Zinc-plated / partially painted
Protection EN 60529 (DIN VDE 0470) IP 20 IP 20 IP 20 IP 20
Compliant with safety regulations DIN EN 60335, DIN 8975,
EMC Directive 89/336/EEC,
Low Voltage Directive 73/23/EEC
Sound power level 6) dB(A) 46 47 51 53
1) W10/W35 = Well water inlet temperature 10 °C, heating flow 35 °C
2) B0/W35 = Brine water inlet temperature 0 °C, heating flow 35 °C
3) At W10/W35 or B0/W35
4) WQA = Heat source system (cold side)
WNA = Heat utilisation system (hot side)
5) At min.: B5/W35
At max.: B20/W60
6) At W10/W50 to DIN EN 255

15
2.4.1 Specification - control unit (WPM)
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
Control panel integration to DIN 43700 Cut-out 138 x 92
Clock backup, day > 10 hours
Permiss. ambient temperature during opera-
tion 0 to 50 °C
Permiss. ambient temperature during storage - 30 to 60 °C
Sensor resistances Test resistance at 2000 Ω
Communication system RS232 (optical), CAN
Max. relay output capacities
Buffer loading pump 2 (1.3) A
Heating circuit pump 2 (1.3) A
Mixer circuit pump 2 (1.3) A
DHW loading pump 2 (1.3) A
DHW circulation pump 2 (1.3) A
Source pump 2 (1.3) A
Contact HS 2 2 (1.3) A
Mixer 2 (1.3) A
Max. total relay output capacity 10 (10) A
2.5 Operation and control
The WPM heat pump manager integrated into
WPF controls the entire heating system. All
necessary adjustments prior and during op-
eration are made on this device.
Only qualified contractors must make adjust-
ments listed in the commissioning report of
the heat pump manager.
Generally, the system must not be shut down during summer, as the
WPM is provided with an automatic sum-
mer/winter changeover facility. Set the
WPM 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 water side of the system, if the heat
pump installation room is subject to a risk
from frost.
The water inside the condenser and that in
the evaporator can be drained (if the heat
pump is used as water/water heat pump) via
the fill & drain valves, which are accessible
after removing the front cover.
2.6 Maintenance and cleaning
2.6.1 Maintenance
The heat pump operates under automatic
control and requires no specific maintenance.
If heat meters are installed, frequently clean
their strainers, which block easily.
2.6.2 Cleaning
2.6.2.1 Evaporator
In case well water sediment settles inside the
evaporator, where it can form a sludge, clean
the evaporator by flushing it via its connectors
(heat source inlet and outlet).
2.6.2.2 Condenser
When the heat pump operation is impaired
(HP limiter trips) through deposits of cor-
rosion byproducts (rust sludge) inside the
condenser, only dissolving them by means of
solvents used by our customer service will
remove this problem.

16
Performance curve WPF 5 (S)
8275.03
Fig. 4
15
10
5
0-5 0510 15 20
8
7
6
5
4
3
2
°C
8
7
6
5
4
3
2
-5 0510 15 20
°C
15
10
5
0
1 = Vorlauftemperatur 35 °C Volllast
2 = Vorlauftemperatur 50 °C Volllast 3 = Vorlauftemperatur 60 °C Volllast
Ethylenglykol/Wassergemisch mit 33 Vol.% Ethylenglykol Wasser
1 = Vorlauftemperatur 35 °C Volllast
2=Vorlauftemperatur 50 °C Volllast 3=Vorlauftemperatur 60 °C Volllast
1 = Flow temperature 35°C Full load 2 = Flow temperature 50°C Full load 3 = Flow temperature 60°C Full load
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 Water
Performance factor εHP Power consumption PHP Heat Output Q
.
HP
Performance factor εHP Power consumption PHP Heat Output Q
.
HP
Inlet temperature of Source MediumInlet temperature of Source Medium

17
Performance curve WPF 7
8276.03
Fig. 5a
-5 0510 15 20
8
7
6
5
4
3
2
°C
-5 0510 15 20
8
7
6
5
4
3
2
°C
15
10
5
0
15
10
5
0
Ethylenglykol/Wassergemisch mit 33 Vol.% Ethylenglykol Wasser
1 = Vorlauftemperatur 35 °C Volllast
2 = Vorlauftemperatur 50 °C Volllast 3 = Vorlauftemperatur 60 °C Volllast
1=Vorlauftemperatur 35 °C Volllast
2=Vorlauftemperatur 50 °C Volllast 3=Vorlauftemperatur 60 °C Volllast
1 = Flow temperature 35°C Full load 2 = Flow temperature 50°C Full load 3 = Flow temperature 60°C Full load
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 Water
Performance factor εHP Power consumption PHP Heat Output Q
.
HP
Performance factor εHP Power consumption PHP Heat Output Q
.
HP
Inlet temperature of Source MediumInlet temperature of Source Medium

18
Performance curve WPF 10
Fig. 5b
8277.03
-5 0510 15 20
8
7
6
5
4
3
2
°C
20
15
10
5
0-5 0510 15 20
8
7
6
5
4
3
2
°C
20
15
10
5
0
Ethylenglykol/Wassergemisch mit 33 Vol.% Ethylenglykol Wasser
1 = Vorlauftemperatur 35 °C Volllast
2 = Vorlauftemperatur 50 °C Volllast 3 = Vorlauftemperatur 60 °C Volllast
1=Vorlauftemperatur 35 °C Volllast
2=Vorlauftemperatur 50 °C Volllast 3=Vorlauftemperatur 60 °C Volllast
1 = Flow temperature 35°C Full load 2 = Flow temperature 50°C Full load 3 = Flow temperature 60°C Full load
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 Water
Performance factor εHP Power consumption PHP Heat Output Q
.
HP
Performance factor εHP Power consumption PHP Heat Output Q
.
HP
Inlet temperature of Source MediumInlet temperature of Source Medium

19
Performance curve WPF 13
Fig. 6
8278.03
25
20
15
10
5
0-5 0510 15 20
8
7
6
5
4
3
2
°C
25
20
15
10
5
0-5 0510 15 20
8
7
6
5
4
3
2
°C
Ethylenglykol/Wassergemisch mit 33 Vol.% Ethylenglykol Wasser
1 = Vorlauftemperatur 35 °C Volllast
2 = Vorlauftemperatur 50 °C Volllast 3 = Vorlauftemperatur 60 °C Volllast
1=Vorlauftemperatur 35 °C Volllast
2=Vorlauftemperatur 50 °C Volllast 3=Vorlauftemperatur 60 °C Volllast
1 = Flow temperature 35°C Full load 2 = Flow temperature 50°C Full load 3 = Flow temperature 60°C Full load
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
Inlet temperature of Source Medium
Performance factor εHP Power consumption PHP Heat Output Q
.
HP
Performance factor εHP Power consumption PHP Heat Output Q
.
HP
Inlet temperature of Source Medium
Water

20
2.7 Equipment description
2.7.1 Function
The heat source medium (water or brine)
enters the heat pump evaporator. There, heat
is extracted from the medium, so it exits the
heat pump at a lower temperature.
The energy made useful through the heat
pump is transfered to the heating water inside
the condenser.
Then, the heating water transfers its energy to
the heating circuit or is utilised for heating the
DHW. In that case, the heating water is divert-
ed by a three-way valve to a heat exchanger
(indirect coil) inside the DHW.
The electrical supplementary heater (internal
HS 2) starts, when temperatures are required
to heat the DHW, which exceed the maxi-
mum flow temperature of the heat pump.
In addition it can cover any residual heat de-
mand, if the heating system demand exceeds
the heat pump output.
2.8 Regulations and require-
ments
On the water side:
DIN 4751 Bl. 1 and 2: Safety equipment for
hot water heating systems
DIN 1988: Technical rules for DHW installa-
tions
TRD 721: Safety equipment to prevent excess
pressure - safety valves.
On the electrical side:
DIN VDE 0100: Regulations for the installation
of HV systems with rated voltages up to
1000 V.
VDE 0701: Regulations regarding the repair,
modification and testing of used electrical
equipment.
DIN-EN 60335 part 2-40
Fig. 7
8169.01
Heating pump curve
TAB: Technical connection conditions for con-
nections to the LV mains.
On the refrigerant side:
EN 378: Safety and environmental require-
ments.
Pressure Equipment Directive
General:
Collation of technical requirements for boiler
rooms, e.g. Boiler Room Directives or na-
tional/local Building Regulations, commercial
and fire as well as emission control regulations
and requirements.
TA-Lärm: Technical instructions to protect
against noise emissions.
2.9 Installation
2.9.1 Transport
To protect the equipment against damage,
it must be transported vertically inside its
dedicated packaging. Storage and transport at
temperatures below -20 °C and in excess of
+50 °C are not permissible.
2.9.2 Installation
1. Remove the equipment from its pallet
and position it where required.
2. Remove the eight screws from the
equipment plinth (Fig. 10), and set down
the casing onto the floor.
The casing must stand on the floor free from the refrigeration unit.
That means, the eight plinth screws must
not be refitted.
Checking the condition at the installation
location
The room where the WPF should be installed
must meet the following conditions:
• No risk from frost.
• Stable floor
(WPF weight approx. 150 kg).
• Horizontal, level and solid floor, as the
equipment feet on the heat pump are
non-adjustable.
• For quiet operation on floating screeds,
remove the screed and the anti-vibration
insulation around the installation location
of the heat pump (Fig. 12).
• The room must not be subject to con-
tamination from dust, gases or vapours.
• The floor area of the installation room
must be at least 3 m², and provide a vol-
ume of 6 m³ (minimum).
• When installing the WPF in a boiler
room together with other heating equip-
ment ensure, that the operation of other
heating equipment will not be impaired.
2.9.3 Installation of the heat source equip-
ment for WPF with water as heat source
2.9.3.1 Required water quality
Amongst common difficulties in the operation
of water/water heat pumps are:
1. Erosion of evaporator and water supply
pipes.
2. Evaporator corrosion.
3. Sludge contamination or blockages in
evaporator and supply lines.
4. Sedimentation of the return well.
To prevent such problems, the quality of the
well water used as heat source must meet the
following standards:
1. The water must not contain any matter
which might settle.
2. Maintain the following limits regarding
water particles to prevent corrosion of
the evaporator.
Sulphate < 100 mg/l
Free chlorine (Cl2) < 0.5 mg/l
Chloride < 300 mg/l
Nitrate < 100 mg/l
pH value 6,5 - 9
Electr. conductivity 50 - 1000 µS/cm
Iron and manganese < 1 mg/l *
Oxygen < 2 mg/l *
* These water particle limits must be main-
tained to prevent the evaporator and its sup-
ply lines becoming contaminated with sludge
and the sedimentation of the return well.
3. The use of surface water or saline water
is not permitted.
Operation of a Stiebel Eltron water/water heat pump is not per-
mitted with water, the condition of which
exceeds any of the above limits.
H
[m]
5
4
3
2
1
0
01234
Q [m /h]
6
3
2
1
3