STIEBEL ELTRON WPMW II User manual

Installation 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.
WPMW II,WPMS II
Heat pump manager for heating system heat pumps
Operation and installation instructions
264755
Index
Operating instructions 2
1 Equipment overview 2
1.1 Equipment description 2
1.2 Operating and installation instructions 2
1.3 Maintenance and care 2
1.4 Important information 3
1.5 Operation 3
2 Adjustments 4
2.1 Operating modes (Control level 1) 4
2.2 Equipment menu (Control level 2) 5
2.3 Remote control FE 7 11
Installation instructions 12
1 Standard delivery 12
2 Wall mounting 12
3 Control panel mounting 12
4 Electrical connection 12
4.1 Electrical cables/leads 12
4.2 Fuses 12
4.3 Mains supply 12
4.4 Circulation pump and mixers 12
4.5 Temperature sensor 12
4.6 BUS connection 14
4.7 Remote control FE 7 14
4.8 Connection array WPMW II 15
4.9 Connection array WPMS II 16
5 Commissioning 17
5.1 BUS initialisation 17
5.2 System configuration 17
5.3 Reset options WPM II 17
5.4 Reset options IWS 17
5.5 Commissioning summary 18
5.6 Commissioning details 20
5.7 Fault remedies 27
5.8 Commissioning list 31
5.9 Checking adjustments at the IWS 32
6 Tables 33
6.1 Specification 33
6.2 Standard settings 33
6.3 Heating and DHW programs 34
Systemsketch 1 35
Systemsketch 2 35
Systemsketch 3 36
26_03_01_0019

2
C26_03_01_0197
Operating instructions for user and contractor
1.1 Equipment description
The heat pump manager of the second ge-
neration, in short WPM II, is designed to take
over all control and regulating processes for all
heat pumps from Stiebel Eltron.
Connected heat pumps are controlled via the
digital BUS connection, which handles the bi-
directional data exchange.
The following heat pump types can be con-
trolled with the WPM II:
WPL 10 A / I / IK
WPL 13, 18, 23, 33
WPW-M 13, 18, 22
WPF-M 10, 13, 16
TTL 10 A / I / IC
TTL 13, 18, 23, 33
TTW-M 13, 18, 22
TTF-M 10, 13, 16
Cascade control
Up to six output stages can be controlled for
heat generation.The permissible maximum
configuration for cascade control is subject to
the type of heat pumps used.
6 Single compressor HP
3 Dual compressor HP with identical com-
pressors
2 Dual compressor HP with different com-
pressors
From the third connected heat pump up-
wards, an MSM must be used to control the
buffer loading pumps
Summary of available functions
RS 232 interface for adjustment and moni-
toring via PC
The three-wire databus enables rapid instal-
lation 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 differ-
ent 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 fault list with precise fault code indi-
cation, together with date and time display
Rapid and accurate fault diagnostics using
system analysis including temperature scan
for heat pump and peripheral equipment
without additional equipment.
Factory settings for time switch programs
for all heating and DHW circuits
Integral solar differential controller or heat
meter
1.2 Operating and installati-
on instructions
Subject to the relevant system, ob- serve the operating and installation
instructions of the components of which
the system comprises.
Keep these operating and installation in-
structions safely and pass them on to any
new user, should the equipment change
hands, and let your contractor check their
content in conjunction with required
maintenance and repair work.
1.3 Maintenance and care
Maintenance work, e.g. checking the electrical safety, must only be
carried out by qualied 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.
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
1 Equipment summary
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
1.4 Important information
The heat pump manager must only
be installed and maintained by quali-
ed contractors.
Heat pump types
The description of individual functions vari-
es between the different heat pump types.
Therefore, three types of heat pump are
determined, which are identied in this do-
cument as HP type 1, 2 or 3.
HP type 1:
Heat pump with ammable refrigerant and
without internal secondary heater.
HP type 2:
Heat pumps with safety refrigerant and in-
ternal secondary heater.
WPF 5, 7, 10, 13
WPW 7, 10, 13, 18
WPL 13, 18, 23, 33
HP type 3:
Heat pumps with safety refrigerant and ex-
ternal secondary heater.
WPF-M 10, 13, 18
WPL 13, 18, 23, 33
1.5 Operation
The operation is split over three control levels.
Control levels 1 and 2 are accessible to user
and contractor alike. Control level 3 is only
designed for qualified contractors.
Control level 1 (control ap closed)
This enables the adjustment of operating
modes, such as standby mode, programmed
operation, constant day or setback mode, etc.
(see section 2.1).
Control level 2 (control ap open)
This enables system parameter, such as room
temperatures, DHW temperatures, heating
programs, etc. to be adjusted (see section 2.2).
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
determined (see chapter 5 of the installation
instructions).
Vital facts in brief
Adjustments
All adjustments follow the same pattern:
Opening the control ap toggles the manag-
er into the programming mode.An indicator
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 that system param-
eter which you want to change. To change
the system parameter, press .Whenever
the red indicator above illuminates, you
can modify the current value by turning the
rotary selector . Press again ; the il-
luminator then goes out 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
gone out.
Terminating programming
You can terminate the programming proc-
ess after entering and saving the require
parameter changes by closing the control
ap. 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 ap with illuminated indicator
above returns the manager into its original
position, The modied value will not have
been saved.
During initial start-up, a system check will be implemented, e.g.
all sensors are currently connected are
displayed. Sensors not connected before
the system went ‚live‘ are not registered
by the manager and are therefore not
displayed.The indicator symbol skips the
system parameter..
Example: The system parameters DHW temp.
and DHW prog. will be skipped if, at the initial
start-up, the DHW cylinder sensor was not
connected.Values for these parameters can
therefore not be programmed.

4
2 Adjustments
2.1 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 hea-
ting 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 central heating flow tem-
perature 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 (ap-
plies to HC1 and HC2), changeover between
day temperature and setback temperature.
DHW in accordance with a time switch pro-
gram, changeover between day temperature
and setback temperature, see point 4.With
this operating mode, an additional symbol (sun
or moon) indicate, whether 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 circuit is constantly held at the
day temperature (applicable to HC1 and
HC2).
DHW according to time switch program.
Application: In low energy houses without set-
back operation.
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: During weekends.
DHW operation
DHW in accordance with a time switch pro-
gram, changeover between day temperature
and setback temperature. Frost protection is
activate for central heating operation.
Application:When the heating period ends;
only DHW should be generated (summer
mode).
Heat source (HS 2)
This setting activates the emergency mode.
With the HP type 2, the HS 2 provides cen-
tral heating and DHW loading during this
operating mode, independent of the dual
mode changeover point of heating and DHW
loading.
For HP types 1 and 3, HS 2 for heating and
DHW must be set to ON at control level 3;
only then can the operating mode be selected.
With this operating mode, HS 2 takes over
the heating or DHW function, independent of
the dual mode changeover point.
Error message (ashing)
ndicates faults in the heat pump ystem.
Inform your local contractor
Display (including all elemets)
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
Heat source 2 (emergency work)
DHW operation
Constant setback mode
Constant day mode
Automatic mode
Standby mode
Fault message (flashing)
C26_03_01_0206

5
2.2 Equipment menu (Control level 2)
Select the required menu point with the rotary selector.
ROOMTEMP HC1
ROOMTEMP HC2
DHW TEMP
time/date
HOLIDAY/PARTY
TEMPERATURES
HEATING CURVES
HEATING PROG
DHW PROG
FIRST START-UP
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 ow 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 cir-
cuit 1 and 2 respectively.
The DHW PROG menu item enables you to adjust the times for the day and setback temperatu-
res 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.

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 ap!
Open the control ap!
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 ap!
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 ap!
Set the time or
summer time
Holiday and party program
In holiday mode, the heat pump system ope-
rates 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 ente-
red; 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 party mode you can extend day mode for
central heating by a few hours.This is display-
ed 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 ap!
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
actual 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 ow temperature (HC 2)
– Actual mixer ow temperature (HC 2)
– Fixed HP return temperature
– Set buffer temperature
Highest set value of heating circuits H1,
H2, H3 if MSM is installed. Fixed tempe-
rature will be displayed for fixed tempe-
rature control)
– Actual HP ow temperature
– Set DHW ow temperature
– Set heating ow temperature
– Actual source ow temperature
– Set source ow 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 ap!
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-specic optimum heating curve
for every heating circuit. It relates to the HP
return temperature for heating circuit 1 and
to the mixer ow 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.
Bezogen auf +20 °C
Außentemperatur
Bezogen auf 0 °C
Außentemperatur
Bezogen auf -20 °C
Außentemperatur
Tag-Betrieb Heizkreis 1
Bezogen auf +20 °C
Außentemperatur
Bezogen auf 0 °C
Außentemperatur
Bezogen auf -20 °C
Außentemperatur
Absenk-Betrieb
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
26_03_01_0076
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 dis-
played, if the corresponding sensor is not
connected.
Temperatures
Outdoor
Back
Temperatures

9
26_03_01_0077
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
Außentemperatur [°C]
Heizkreis 2 WP-Vorlauftemperatur [°C] Heizkreis 1 WP-Rücklauftemperatur [°C]
0,8
20 18 16 14 12 10
8 6 4 2 0
-2 -4 -6 -8
-10 -12 -14 -16 -18 -20
Außentemperatur [°C]
70
60
50
40
30
20
Tag-Betrieb
Absenk-Betrieb
Rücklauf- / Vorlauftemperatur [°C]
20 18 16 14 12 10
8 6 4 2 0
-2 -4 -6 -8
-10 -12 -14 -16 -18 -20
Außentemperatur [°C]
Rücklauf- / Vorlauftemperatur [°C]
70
60
50
40
30
20
geänderte Heizkurve
26_03_01_0078
26_03_01_0079
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.
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 tempe-
rature 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 ap.
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 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 hea-
ting 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 sys-
tem should provide heat from 08:30 h until
21:00 h.
Open the control ap.
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
2.3 Remote control FE 7
DHW programs
The DHW PROG menu item enables you to
adjust the times for the day and night tempe-
ratures 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 DHWTEMP
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 ap.
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
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.

12
Installation instructions for contractors
The instructions in this chapter are only
addressed to qualied contractors.
1 Standard delivery
The boxes contain components in line with
the following list:
WPMW II Part no: 185450
The heat pump manager is fully wired inside
its wall mounting enclosure:
– Wall mounting enclosure
– Wiring harness
– 3 sensors (AVF 6,TF 6A and AFS 2)
– 18 wedges as strain relief
– WPM II
WPMS II Part no: 185451
The heat pump manager as individual device
for installation in a control panel:
– 3 sensors (AVF 6,TF 6A and AFS 2)
– WPM II with plugs
2 Wall mounting (WPMW II)
The WPMW II is exclusively designed for wall
mounting. Please observe that the back of the
wall mounting enclosure is inaccessible in the
installed condition. Protect the equipment in
use against moisture, dirt and damage.The
permissible ambient temperature lies between
0 and 50 °C. Determine the position for the
holes to be drilled using the installation temp-
late. For securing the top of the casing, insert
a 4 x 35 mm pan-head screw so far into its
rawl plug, that you can still just hang the casing
onto the screw head.Then secure the bottom
half of the casing with two further 4 x 35 mm
screws.
During the installation, observe the
required clearance of a min. of 1 m
towards the heat pump.
3 Control panel mounting
(WPMS II)
Observe all relevant requirements when in-
stalling the manager inside a control panel. In
particular observe the segregation of mains
and low voltage items/cables/leads.
4 Electrical connection
Make the electrical connection in accordance
with the relevant electrical connection dia-
gram.
The supply voltage at terminal L and the
phase L´ switched by the power supply unit
must be routed via the same RCD, as both
have the same neutral conductor in the WPM
II. Ensure that L and L´ are on the same
phase!
Ensure that the WPM II must be able to be
separated from the mains supply by an ad-
ditional isolator, which can separate all poles
with at least 3 mm contact separation, or with
an isolating facility in accordance with current
regulations. For this purpose, use contactors,
mains isolators, fuses, etc.
Isolate all poles of the heating system supply
prior to carrying out any installation work.
4.1 Electrical cables/leads
The cable grommets in the wall mounting
casing are suitable for rigid and flexible cables/
leads with an outside diameter between 6
mm and 12 mm.
BUS cable: J-Y (St) 2 x 2 x 0.8
Secure all cables to the wall immediately
below the wall mounting casing using correct
strain relief equipment.
The red wedges supplied are designed to se-
cure the cables/leads inside the housing.
Observe correct separation when
installing the BUS cable, the mains
supply cable and the sensor leads.
4.2 Fuses
No fuses for consumers are provides inside
the WPM II or in the wall mounting housing.
A fuse for connected consumers can be wired
into the circuit via connection L* or pump L
(see also the heat pump connection diagram).
4.3 Mains supply
Observe the correct connection of the earth
conductor when making the mains supply
connection.The mains and LV parts are struc-
turally separated inside the wall mounting
casing.The mains cables are brought into the
casing from above the connection deck into
the inlet ducts, and the LV leads are introdu-
ced from the bottom l.h. and r.h. sides.
4.4 Circulation pump and mixers
When making these connections, observe
the maximum relay capacity (10 A/250V AC)
and the maximum controller capacity
(10 A/250 V AC).
Subject to parameter settings, the DHW cir-
culation pump relay output can also be used
for alternative purposes.
4.5 Temperature sensor
The sensors supplied with the WPM II all pro-
vide the same temperature/resistance values
in accordance with the following table:
For resistance coefficients for the collector
sensor (PT 1000), see table on page 13.
Temperature in °C Resistance in Ω
– 20 1367
– 10 1495
0 1630
10 1772
20 1922
25 2000
30 2080
40 2245
50 2417
60 2597
70 2785
80 2980
90 3182
100 3392
The installation of the temperature sensor has
a decisive influence on the function of your
heating system. For that reason, observe the
following points:
26_03_01_0244
26_03_01_0245

13
Outside temperature sensor AFS 2
Part no: 165339
Install the outside tempera-
ture sensor on a north or
north-eastern wall behind a
heated room.
Minimum distances:
2.5 m from the ground
1 m to the side of doors
and windows.The outside temperature sensor
should be freely subjected to weather influ-
ences. However, avoid locations above win-
dows, doors and air ducts and those affected
by direct solar irradiation.
Installation:
Pull off the lid. Secure the sensor with the
screw supplied. Insert and connect the sensor
lead. Position the lid again and let it clearly
click into place
Immersion sensor TF 6A
Part no: 165342
Insert the immersion sen-
sor into the appropriate
sensor well of the respec-
tive cylinder.Where no
calorifier is installed, fit the
immersion sensor to the
heat pump return.
Diameter:6 mm
Length: 1 m
Contact sensor AVF 6
Part no:165341
Installation information:
Thoroughly clean the
pipe.
Apply heat conduction
paste A.
Secure the sensor with
a strap.
With a WPWE, also connect the
source sensor.The source pump will
not be started if this is not done.
Install the contact sensor at the source inlet
of the heat pump.
Insulate the contact sensor against vapour
diffusion to protect against the formation of
condensate.
Order additional sensors separately!
PT1000 immersion sensor
Part no:165818
Collector sensor
Diameter: 6 mm
Length: 1.5 m
The immersion sensor with
the longer silicone lead is
the collector sensor (PT
1000).
The correct connection of the collector sen-
sor (silicone lead) is crucial for the correct
function of a solar heating system.The sensor
on collectors from Stiebel Eltron is installed
on the last collector, viewed in the flow direc-
tion of the heat transfer medium. For this,
install and seal in the collector sensor well on
the collector. Coat the collector sensor with
heat conducting paste and insert into the sen-
sor well tube until it bottoms out.
Provide thermal insulation for the collector
sensor well and the roof outlet, which must be
closed without gap and must be UV resistant.
– SecureGood coupling of the sensor
(only secure contact sensors on straight
pieces of pipe).
– Coat the entire surface with heat con-
ducting paste
– Insulate the contact sensor well
– Apply strain relief to the sensor leads
You can check the correct coupling and con-
nection to the manager under the system
parameter Info Temp. by calling up the respec-
tive temperature value.
Resistance coefcient PT 1000
collector sensor
Temperature in °C Resistance in Ω
– 30 843
– 20 922
– 10 961
0 1000
10 1039
20 1078
30 1117
40 1155
50 1194
60 1232
70 1271
80 1309
90 1347
100 1385
110 1423
120 1461
Installation of collector sensor
Collector sensor well
Temperature sensor including
heat conducting paste
Heat transfer medium
(flow direction) Last collector in
flow direction
Roof outlet
(corrugated hose)
Thermal insulation
Compression fitting
C26_03_01_0192

14
4.6 BUS connection
As part of the BUS cable connection, not only
the electrical interconnection for the system
communication will be created.
Only connect the BUS cable during
commissioning.
The correct BUS connection has a vital influ-
ence on the function of the heat pump system
(see sections 5.1 and 6.1)
4.7 Remote control unit FE 7
Connection array:
Required temperature sensor
Outside temperature sensor Sensor HP flow temperature Sensor HP return temperature Sensor DHW temperature Sensor second heat source Sensor heat source temperature Sensor mixer flow temperature
WPWE-, WPF-M- system
Mono-mode x x x 
Mono-energetic mode with secondary electrical heater x x x  
Dual mode (Bivalent) with boiler x x x   
WPL- system
Mono-mode x x x
Mono-energetic mode with secondary electrical heater
(DHC) WPL 10/15/20/25/30 KW
x x x 
Mono-energetic mode with integral secondary electrical
heater (DHC) WPL 13/18/23/33
x x x
Dual mode (Bivalent) with boiler x x x  
Additional sensors for:
DHW cylinder loading with the heat pump 
Additional controlled heating circuit 
x: sensor supplied
: additionally required sensor
Fernb.3
Fernb.1
123
26_21_01_0008
- FE 7/1
- Earth/sensor
- FE 7/3

15
26_03_01_0243
4.8 Connection array WPMW II
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
NPE
X5
X1
X2
X4
X3
The connection array of the WPMW II has been designed in accordance with current safety standards into LV and mains voltage areas. All cables/
leads are routed through the ducts and secured in the wall mounting housing with the red wedges supplied. Make all connections in accordance with
the WPMW II designations.
FE 7
Wedge
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
External Flow Return DHW 2nd HS Source Mixer Pulse 1 3 Bus H Bus L Bus – Bus + Sensor 1 Sensor 2
Mains N Mains L ESC L‘ Pumps L Buffer 1 Buffer 2 Source Heat 1 Heat 2 DHW DHW Circ 2. HS 2. HS Mixer + Mixer – Solar
X1 Mains voltage area
1 N
2 L
3 L‘ ESC enable signal
4 Pumps L (voltage input for relay outputs)
5-6 Buffer loading pumps
7 Source pump
8-9 Heating circuit pumps
10 DHW loading pump
11 DHW circulation pump
12-13 Second Heat source
14 Mixer OPEN
15 Mixer CLOSE
16 Solar heating pump
X2 LV area
1 Outside temperature sensor
2 Sensor HP flow temperature
3 Sensor HP return temperature
4 Sensor DHW temperature
5 Sensor second heat source
6 Sensor heat source temperature
7 Sensor mixer flow temperature
8 Heat meter pulse input
9 Terminal 1 of the FE 7 remote control
10 Terminal 3 of the FE 7 remote control
11-13 BUS high, low and ground
14 „+“ (only connected in accordance with the “DCOactiv” controller )
15 Rotary selector for heat metering
DHW cylinder bottom for solar heating connection
16 Flow sensor for heat metering
Collector sensor for solar heating connection
X3 Earth
X4 N
X5 PE

16
4.9 Connection array WPMS II
Make the WPMS II connections in accordance with the connection array shown. For this, insert the plugs supplied as follows onto the WPMS II to
provide a complete complement:
LV area
X10
1 Heat meter pulse input
2 Earth
X11
1 HP flow sensor
2 Earth
3 HP return sensor
4 Earth
5 Analog output 0 -10 V
6 DHW cylinder sensor
7 Rotary selector for heat metering
DHW cylinder bottom for solar heating connection
8 Sensor second heat source
9 Flow sensor for heat metering
Collector sensor for solar heating connection
10 Outside temperature sensor
X12
1 Earth
2 Source sensor
X13
1 Earth
2 Mixer flow sensor
X14
1 Remote control
2 Earth
3 Remote control
X15
1 BUS high
2 BUS low
3 Ground „–“
4 „+“ (only connected in accordance with the “DCOactiv” controller )
Mains voltage area
X20
1 Mixer circuit pump
2 Source pump
3 L´ ESC enable signal (must be connected)
4 Solar heating pump
5 N
X21
1 Mixer OPEN
2 Mixer CLOSE
X22
1 N
2 L
3 L* (voltage input for relay outputs)
4 DHW circulation pump
5 Buffer loading pump 1
6 Buffer loading pump 2
7 DHW loading pump
8 Heating circuit pump 1
9 Second Heat source zero-volt
10 Second Heat source contact
26_03_01_0246
Internal
wiring

17
5 Commissioning
The system can be commissioned after the
installation of all heating components required
for the proper operation and after all electri-
cal cables/leads have been connected.
A heat pump system can comprise many dif-
ferent components.A sound knowledge of the
system function is therefore essential.
5.1 BUS initialisation
As part of the BUS cable connection, not only
the electrical interconnection for the system
communication will be created.As part of
commissioning, switching the BUS cable will
also allocate the equipment-specific address
required for controlling the heat pumps.
Only connect the BUS cable during commissioning.
Observe the following sequence when making
the BUS connections:
– Connect the mains supply to the indivi-
dual heat pumps
– Connect the mains supply to the WPM II
– Connect the mains supply to the MSM
(if installed)
– Set the system to standby mode to
prevent the heat pump from running
without control during initialisation
– Call up parameter 50 „Analysis“ from
system parameter „Start up“. Every
figure shown (1 to 7) represents a con-
nected heat pump.
At this point, the display must not show any
figures.
– If an MSM is installed, this must be con-
nected to the WPM II as rst device via
the BUS cable.
No more than 2 min. after the con-
nection was made, the WPM II display
must show the gure 7. Communica-
tion between both devices has been
established.
– Connect the BUS cable to the individual
heat pumps, one after the other. Any
heat pump supplied with voltage will be
allocated an address, as soon as the BUS
cable is connected.This enables WPM II
to control the heat pump.
– Check the BUS communication via para-
meter 50 „Analysis“.
After each BUS connection is made, a further
concurrent figure must be shown in the
Display after no more than 2 min. Finally the
number shown in the display must be identical
to the number of heat pumps.
After initialisation has been concluded, the
parameter „Diagnostic“ enables you to check,
whether the WPM II has found all connected
heat pumps.The display may show, for examp-
le „HP 1 found“.
Heat pump modules
The control panel for each heat pump pro-
vides space for the connection of two three-
core BUS cables, i.e. the BUS cable between
the heat pumps is wired in parallel.
Required order of the heat pumps to be
installed:
heat pumps provided for DHW loading/he-
ating must always be initialised first. All other
heat pumps can then be connected in any
order.
All necessary sensors must be connected before the supply is
connected to the WPM II. Any sensors
connected later will not be recognised by
the WPM II.
Example: The system parameter DHW temp.
and DHW prog. will be skipped if, at the initial
start-up, the DHW cylinder sensor was not
connected.Values for these parameters can
therefore not be programmed.
All IWS must be reset in case of incorrect
initialisation,
in other words, they must be re-initialised (see
section 5.4.1).
The entire heat pump system will be shut down, if the BUS cable
between WPM II and the heat pump is
interrupted.
5.2 System conguration through set-
tings in the commissioning report.
The commissioning report contains all settings
for the WPM II function. In case the system
operates incorrectly, initially check the settings
in the commissioning list.
5.3 Reset options WPM II
5.3.1 Reset by turning the rotary switch
from Auto to Reset and back again.All sys-
tem-specific programs remain intact.The error
list will not be deleted.
5.3.2 Reset by turning the rotary switch
from Auto to Reset and back again while
holding down the PRG key. EEPR must be
shown in the display. (EEPROM hardware
reset).The WPM II is reset into the as deli-
vered condition.The error list will be deleted.
5.4 Reset options IWS
5.4.1 IWS re-initialising
For this, proceed as follows:
– Switch OFF the mains supply to the
WPM II
– Switch OFF the mains supply to the
MSM (if installed)
– Switch OFF the mains supply to the heat
pumps
– Open die heat pumps
– Disconnect all BUS connections
– Switch ON the power supply to the
heat pump
– Press the reset button. Hold down the
button until the three LEDs light up per-
manently. Release the reset button.The
IWS is only reset at this point and ready
for a new initialisation. – Switch ON the
mains supply again
– BUS initialisation in accordance with sec-
tion 5.1
– Setting all system-specific parameters
in accordance with the commissioning
report of MSM,WPM II
Carry out this reset, if error were made du-
ring the commissioning, i.e. during the system
initialisation.
5.4.2 The IWS is reset by activating the para-
meter „Reset HP“.
The heat pump is ready for operation again.
Implement this reset if a heat pump-specific or
hardware fault has occurred five times within
5 hours.

18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
ENTER CODE
LANGUAGE GERMAN --------- MAGYAR
CONTRAST
DISPLAY ACTUAL RTRN T OUTSIDE TEMP DAY DHW TEMP MIXER TEMP
EMERG OPERTN ON / OFF
SYSTEM TYPE ON / OFF SOLAR OPERTN HEAT QUANTITY BACK
SOLAR TEMP IMPULSE RATE
SOLAR DIFFEREN
HEAT UP PROG OFF / ON LOW END TEMP
LOW END DURATION MAX HEAT UP T MAX HUTTIME INCR PER DAY
SUMMER OPRTN OFF / ON BUILDINGTYPE OUTSIDE TEMP BACK
PUMP CYCLES ON / OFF
B-PUMP R-TIME ON / OFF
FIXED VALUE OFF / °C
SOURCE WATER ETHYLENE GLYCO POTASS CARB BACK
SOURCE MIN °C
RTRN MAX °C
MAX HTG FLOW T °C
MAX DHW FLOW T °C
MIXER MAX °C
MIXER DYNAMIC
FROST PROTECT °C
SELECT REM CON HEAT CIRCUIT 1 HEAT CIRCUIT 2 BACK
FE-CORRECTION
ROOM INFLUENCE
ON TIME HS2 ON / OFF HS 2 BGC HS 2 BOILER BACK
HEAT LIMIT OFF / °C
DUAL MODE HEAT °C
OFF TIME HS 2 OFF / h
5.5 Commissioning
No. Parameter (as shown in the Display)
FIRST STARTUP

19
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
HTG CURVE GAP K
SET BOILER T °C
ON TIME HS2DHW ON / OFF SUPPORTED INDEPENDENT ALONE BACK
DHW LIMIT °C
DUAL MODE DHW °C
DHW OPERATION DHW PRIORITY DHW PARALLEL DHW PART PRIOR BACK
DHW AUTO OFF / ON
DHW O-SIDE-TEMP BACK
WW-ECO ON / OFF
DHW STAGES
DHW HYSTERIS °C
PASTEURISATION ON / OFF
DEFROST MIN min
MAN DEFROST ON / OFF
CNTRL RESP TM
COMP IDLE TIME min
COMP DLAY CNTR HEAT PUMP 1 ----- HEAT PUMP 6 BACK
QUICK START
RELAY TEST
DHW CIRCULATION ------ SOLAR PUMP BACK
LCD TEST
ERROR LIST
SOFTWARE WPM
SOFTWARE IWS
TYPE IWS
ANALYSIS
DIAGNOSTIC
RESET HP
RUN TIMES
BACK

20
Dauer-Maximaltemp. Ende Zeit
Dauer-Sockeltemp.
Sockeltemp.
Steigung K/Tag
Temperatur
Maximaltemp.
Aufheizprogramm für Fußbodenheizung
26_03_01_0144
5.6 Commissioning details
Not only the adjustments at control level 2
but also the system-specific parameters must
be determined as part of commissioning the
heat pump system.These parameters are ad-
justed at control level 3, the access to which is
protected by code.
Check all parameters in sequence. Enter all
set values into the column (system value)
provided on the commissioning report under
section 5.8 on page 31.
Note: Not all adjustments take immediate
effect. Some adjustments only become effecti-
ve in certain situations or after a dealy.
1Code no. 1 0 0 0
Enter the correct four-digit code to change
parameters on control level 3.The factory-
set code is 1000. After pressing the PRG key
(indicator illuminates), the first digit can be se-
lected by turning the rotary selector. Pressing
the PRG key again confirms the figure, then
the second digit of the code begins to flash.
Turning the rotary selector enables the se-
cond digit to be entered.When all four digits
have been entered correctly, four lines appear
in the display.This enables access to control
level 3, and the display shows CODE OK.
Closing and re-opening the flap requires that
the code is entered again. However, the code
does not need to be re-entered when merely
checking settingsChecking settings does not
require the code to be entered.
2Language
Press the PRG key and select the language
with the rotary selector.Then confirm your
selection by pressing PRG again.
3Contrast
4Display
At this point select, what you want the display
to show when the control flap is closed. You
can select between outside temperature,
return temperature, day and time, DHW tem-
perature or mixer temperature.
5Emergency oper:
Characteristics in case of „Fatal Error“ con-
ditions in conjunction with the emergency
operation:
The „Emergency operation“ parameter can
be set to ON or OFF.
Emergency operation set to ON:
As soon as faults occur for HP type 2 and
the heat pump fails, the program selector
automatically changes over to emergency
operation.
Emergency mode:
Within a heat pump cascade, all heat pumps
must be in a fault state (fatal error), before the
programming switch automatically changes to
„Emergency mode“. Exception: „Emergency
mode“ starts automatically, as soon as the sole
heat pump drops out, which was selected for
DHW heating.
For HP types 1 and 3, the HS 2for heating
or DHW must be set to ON; only then can it
automatically change over to emergency ope-
ration in case of fatal errors. However, as soon
as several heat pumps have been connected,
all of these must be in fatal error mode, be-
fore the program selector automatically chan-
ges to emergency operation.
Emergency operation set to OFF:
As soon as faults occur for HP type 2 and the
heat pump fails, the second heat source takes
over the frost protection of central heating.
Users can then themselves select emergency
operation.
6System type
Heat meter or solar differential controller
This parameter can only be selected if both
sensors listed in this field are connected.
In addition a heat meter with reed contacts
must be connected in case of system type
„Heat meter“; alternatively a solar pump must
be connected in case of system type „Solar
heating operation“.
You can set the „Impulse rate“ parameter as
soon as the system type „Heat quantity“ has
been set to ON.The standard setting for im-
pulse rate is 10, and the unit litre s/impulse.
The heat quantity results from determining
the volume flow and the temperature diffe-
rential (sensor 1 on the return and sensor 2
on the flow).
The various heat quantities, for example total
heat quantity in kWh, heat quantity in kWh
that day, current heat quantity in W or the vo-
lume flow in m³/h can be scanned under “Info
temperatures”.
You can set two parameters, such as „Max.
cylinder temperature“ and „Solar differential
temperature“ as soon as the system type
„Solar operation“ has been set to ON.With
this constellation, sensor 1 is the DHW sensor
bottom and sensor 2 the collector sensor (PT
1000).
The temperature differential established by
these two sensors is recorded and compared
with the set temperature differential (solar
difference parameter).The solar heating pump
is started if the recorded differential exceeds
the set differential.The solar hearing pump
is stopped again, when the actual value falls
below the set value minus a hysteresis of
1.5 K.
In addition, the controller provides an adju-
stable maximum cylinder limit (max. solar
temp. parameter).The solar heating pump will
also be stopped if this temperature is reached
at the bottom cylinder sensor.
7Heat up prog
Heat-up program for underoor heating
systems
This heat-up program comprises a total of
six parameters.These six parameters can be
adjusted in sequence as soon as the heat-up
program is activated.This program is started
with the „Heat-up prog“ parameter set to
Heating-up program
Temperature
Max. temperature
Socket temperature
Increase/day
Duration Socket temp. Duration max. temp. Time
End