STIEBEL ELTRON WSP-2-DUO Instruction Manual

OPERATION AND INSTALLATION
PROFI SELECT apartment module for DHW and heating with integral instantaneous water heater
»WSP-2-DUO
»WSG-2-DUO

2| WSP-2-DUO, WSG-2-DUO
CONTENTS | OPERATION
General information
OPERATION
1. General information ������������������������� 2
1.1 Relevant documents__________________________ 2
1.2 Safety instructions ___________________________ 2
1.3 Other symbols in this documentation____________ 3
1.4 Information on the appliance___________________ 3
1.5 Units of measurement ________________________ 3
2. Safety ������������������������������������� 3
2.1 Intended use ________________________________ 3
2.2 Safety instructions ___________________________ 3
3. Appliance description ������������������������ 3
4. Cleaning, care and maintenance ��������������� 3
5. Troubleshooting ���������������������������� 4
INSTALLATION
6. Safety ������������������������������������� 4
6.1 General safety instructions_____________________ 4
6.2 Instructions, standards and regulations __________ 4
7. Appliance description ������������������������ 4
8. PROFI SELECT modular system����������������� 4
8.1 Base station _________________________________ 5
8.2 Installation options ___________________________ 6
8.3 Accessories _________________________________ 8
9. Preparation�������������������������������� 10
9.1 Installation location _________________________ 10
9.2 Storage ___________________________________ 10
9.3 Transport __________________________________ 10
10. Installation �������������������������������� 11
10.1 Appliance installation ________________________ 11
10.2 Water connection ___________________________ 12
10.3 Electrical connection ________________________ 12
10.4 Completing the installation ___________________ 13
11. Commissioning ���������������������������� 13
12. Settings����������������������������������� 14
13. Appliance handover ������������������������ 14
14. Maintenance������������������������������� 14
15. Troubleshooting ��������������������������� 14
16. Specication������������������������������� 15
16.1 Dimensions and connections__________________ 15
16.2 Wiring diagrams ____________________________ 18
16.3 Data tables ________________________________ 22
GUARANTEE
ENVIRONMENT AND RECYCLING
OPERATION
1. General information
These instructions are intended for qualied contractors.
Note Read these instructions carefully before use and keep
them available by the appliance.
Pass on the instructions to a new user if required.
1.1 Relevant documents
Operating and installation instructions for the central
heating system
Operating and installation instructions for the integral
instantaneous water heater
Instructions for the installation options used
1.2 Safety instructions
1.2.1 Structure of safety instructions
KEYWORD Type of risk Here, possible consequences are listed that may re-
sult from failure to observe the safety instructions.
 Steps to prevent the risk are listed.
1.2.2 Symbols, type of risk
Symbol Type of risk
Injury
Electrocution
Burns
(burns, scalding)
1.2.3 Keywords
KEYWORD Meaning
DANGER Failure to observe this information will result in serious
injury or death.
WARNING Failure to observe this information may result in serious
injury or death.
CAUTION Failure to observe this information may result in non-se-
rious or minor injury.
!

ENGLISH
OPERATION
Safety
WSP-2-DUO, WSG-2-DUO |3
1.3 Other symbols in this documentation
Note General information is identied by the adjacent sym-
bol.
 Read these texts carefully.
Symbol
Material losses
(appliance damage, consequential losses and environ-
mental pollution)
Appliance disposal
 This symbol indicates that you have to do something. The
action you need to take is described step by step.
1.4 Information on the appliance
 Always observe the information on the appliance and
keep it legible.
1.5 Units of measurement
Note All measurements are given in mm unless stated oth-
erwise.
2. Safety
2.1 Intended use
The appliance is intended for decentralised DHW heating and
for heating water distribution.
The appliance is intended for domestic use. It can be used safe-
ly by untrained persons. The appliance can also be used in a
non-domestic environment, e.g. in a small business, as long as
it is used in the same way.
Any other use beyond that described shall be deemed inappro-
priate. Observation of these instructions and of the instructions
for any accessories used is also part of the correct use of this
appliance.
WSG-2-DUO
The threaded heat exchanger is particularly suitable for critical
DHW conditions.
2.2 Safety instructions
!WARNING Injury
The appliance may be used by children aged8 and
older and persons with reduced physical, sensory
or mental capabilities or a lack of experience and
know-how, provided that they are supervised or
they have been instructed on how to use the ap-
pliance safely and have understood the potential
risks. Children must never play with the appliance.
Children must never clean the appliance or perform
user maintenance unless they are supervised..
WARNING Burns -Hot water or steam may escape.
-There is a risk of scalding at outlet temperatures
in excess of 43°C.
-Pipework and parts of the appliance may be-
come hot.
!Material losses
In the event of water damage, immediately shut down
the appliance.
!Material losses
The user should protect the system against moisture
and frost.
!Material losses
There is a risk of re.
 Do not store any combustible materials near the
appliance.
Note Do not cover the air slots in the casing door.
 Ensure adequate air circulation.
3. Appliance description
The appliance provides the required amount of DHW at the
preferred temperature at the draw-o points. This occurs with-
in the output limits of the appliance.
The appliance is equipped with an integral instantaneous
water heater for reheating DHW as required.
Heating water is distributed to the connected radiators.
4. Cleaning, care and
maintenance
A damp cloth is sucient for cleaning the casing. Never use
abrasive or corrosive cleaning agents.
The heat exchanger requires regular cleaning, depending on
water quality. Have the appliance cleaned by a qualied con-
tractor after no more than 2years. The qualied contractor
will then determine the intervals at which it should be cleaned
thereafter.
!

INSTALLATION
Troubleshooting
4| WSP-2-DUO, WSG-2-DUO
5. Troubleshooting
Problem Cause Remedy
DHW does not heat up.
Radiators do not heat
up.
The central pump is not
working.
Check whether the cen-
tral pump is running.
The heating system is
not working.
Check whether the
heating system is free
from faults.
If you cannot remedy the fault, contact your qualied contrac-
tor. To facilitate and speed up your request, provide the num-
ber from the type plate (000000-0000-000000).
000000-0000-000000
Made in Germany
D0000075011
INSTALLATION
6. Safety
Only a qualied contractor should carry out installation, com-
missioning, maintenance and repair of the appliance.
6.1 General safety instructions
We guarantee trouble-free function and operational reliability
only if original accessories and spare parts intended for the
appliance are used.
6.2 Instructions, standards and regulations
Note Observe all applicable national and regional regula-
tions and instructions.
7. Appliance description
Domestic hot water
For DHW heating, cold water ows to the plate heat exchanger.
The "Thermo Fluid System" temperature controller detects the
DHW demand. Some of the heating water from the heating
water ow is channelled over the heat exchanger to heat the
DHW to the required temperature. DHW from the cold water
connection is channelled through the heat exchanger and
heated as required. DHW ows from the heat exchanger to
the "DHW outlet".
The temperature level of the DHW can be further increased
by switching on the integral instantaneous water heater. This
enables outlet temperatures of up to 60°C.
A "Cold water outlet" supplies the draw-o points from a cold
water distributor inside the appliance.
Room heating, e.g. radiators
Heating water from the heat generator is distributed by the
appliance to the heating circuits via the "Heat source ow" and
the dirt lter. The common return to the supply side is through
the "Heat source return" with a dierential pressure controller.
Heating water from the "Heat source ow" is supplied directly
via the "Heating ow" to the heating circuit without mixer, e.g.
radiators.
The ow temperature can be reduced to a lower temperature
level (e.g. for underoor heating systems) via an optional heat-
ing circuit with mixer.
An actuator and room temperature controller available as ac-
cessories can be used to centrally interrupt the heating circuit
supply once the required room temperature is reached.
8. PROFI SELECT modular system
The PROFI SELECT modular system consists of 4components:
- Base station
- Output modules
- Installation options
- Accessories
Order code
The order code consists of the base station designation, fol-
lowed by an "E" and the internal code for the installation op-
tions.
Example: Order code "WSP2DUOE-7.1"
WSP2DUO E 7.1
Base station
Installation options
E7-WDR1

ENGLISH
INSTALLATION
PROFI SELECT modular system
WSP-2-DUO, WSG-2-DUO |5
8.1 Base station
Base stations are fully functional apartment modules which
can be further equipped with output modules and installation
options.
Designation Description
WSP-2-DUO Copper-soldered heat exchanger,
integral instantaneous water heater
WSG-2-DUO Stainless steel-soldered heat exchanger,
integral instantaneous water heater
D0000075086
1
4
3
2
5
6
10
11
12
9
7
8
1 Air vent screw
2 Mounting position on nished walls
3 Mounting position on unnished walls
4 Room heating valve
5 Dierential pressure controller
6 Heat meter adaptor
7 Equipotential bonding connection
8 Pressure surge reducer
9 Instantaneous water heater
10 Plate heat exchanger
11 Dirt lter with strainer
12 "Thermo Fluid System" (TFS) temperature controller
Note There are no output modules available for the WSP-2-
DUO and WSG-2-DUO base stations.
8.1.1 Heat meter
Heat meters must be installed in the unit on site.
The base units are equipped with appropriate ttings (110mm,
¾” 1.5m³/h) for the heat meters.
Sensor retainer:
- Directly immersed
- Sensor length: 28mm
- Diameter: Max. 5.4mm; at the sealing point min. 5.2mm
8.1.2 Heat exchanger operating conditions
The threaded, stainless steel soldered heat exchanger is par-
ticularly suitable for applications where water quality is critical.
Water constituents/
characteristic values
Unit Heat exchanger
copper soldered
Heat exchanger
stainless steel sol-
dered
pH value 7-9 (taking SI index
into account)
6-10
Saturation index SI
(delta pH value)
-0.2 < 0 < +0.2 Not specified
Total hardness °dH 6-15 6-15
Conductivity S/cm 10...500 Not specified
Suspended solids mg/l < 30 < 30
Chloride mg/l Above 100°C no chlorides permissible
Free chlorine mg/l < 0.5 < 0.5
Hydrogen sulphide mg/l < 0.05 Not specified
Ammonia mg/l < 2 Not specified
Sulphate mg/l < 100 < 400
Hydrogen carbonate mg/l < 300 Not specified
Hydrogen carbonate/
sulphate
mg/l > 0.1 Not specified
Sulphide mg/l < 1 < 7
Nitrate mg/l < 100 Not specified
Nitrite mg/l < 0.1 Not specified
Iron, dissolved mg/l < 0.2 < 0.2
Manganese mg/l < 0.1 Not specified
Free, aggressive carbon
dioxide
mg/l < 20 Not specified
Note We recommend using a softening system if the total
hardness is >15°dH.
8.1.3 Thermal overow valve operating conditions
A thermal overow valve can be used at the end of the line to
increase comfort levels.
Designation Part number
Overflow valve
ÜVS 236016
Note If the simple pipe length (see following table) of the
last heat interface unit in the line is not exceeded, a
thermal overow valve is not required.
Required flow temperature [°C] 70 65 60 55
Nominal pipe diameter Pipe length [m]
DN15 21 17 12 7
DN20 18 15 11 6
DN25 16 13 9 5
DN32 14 11 8 5
DN40 13 10 7 4
DN50 11 9 7 4

INSTALLATION
PROFI SELECT modular system
6| WSP-2-DUO, WSG-2-DUO
8.1.4 TFS temperature controller adjustment options
Scale TFS temperature controller
(control range 30-50°C)
Notes
130
232
334
437 Recommended setting:
539 between positions4 and 5
641
743
846
948
10 50
8.2 Installation options
Installation options are installed in the base station at the fac-
tory and cannot be ordered individually.
Designation Internal
code
Description
Heating circuit
E1-HKT 1.1 Heating circuit, thermostatic
E1-HKE 1.2 Heating circuit, electric
E2-HKU 2Heating circuit without mixer
Pipework thermal insulation
E7-WDR1 7.1 Pipework thermal insulation
E7-WDR2 7.2 Pipework thermal insulation
Drain set
E8-ES 8Drain set
Contact thermostat
E9-ATR 9Contact thermostat
Note For dimensions and connections as well as the data
tables for the installation options, see chapter "Instal-
lation/ Specication".
[1.1] Heating circuit with mixer, thermostatically
controlled| E1-HKT
Heating circuit with mixer with high eciency pump including
pipework in the base station
D0000074998
The ow temperature is controlled by an injection system
using a thermostatic control valve.
Scale Temperature controller
(control range 20-50°C)
120
223
327
430
533
637
740
843
947
10 50
Checking/ correcting the heating water ow rate
 Ensure heat supply through the central heat generator.
The ow temperature should have reached the design
value for the network.
 Set the temperature controller to the required ow tem-
perature at the control valve.
 Switch on the pump.
 Perform hydronic balancing of the underoor heating
circuit at the heating circuit distributor according to the
design engineer's specications.
 Do not draw o any DHW while testing the heating water
ow rate. Make sure that all thermostatic valves and un-
deroor heating control valves are fully open.
 After balancing is complete, check the set ow tempera-
ture again.

ENGLISH
INSTALLATION
PROFI SELECT modular system
WSP-2-DUO, WSG-2-DUO |7
[1.2] Heating circuit with mixer, electrically controlled|
E1-HKE
Incl.
SEHC/SEHCM Control unit operating instructions
Heating circuit with mixer with high eciency pump including
pipework in the base station
D0000074999
The ow temperature is controlled by an injection system using
an electric 3-point actuator and a 2-way straight-through valve.
 Observe the enclosed instructions.
Checking/ correcting the heating water ow rate
 Ensure heat supply through the central heat generator.
The ow temperature should have reached the design
value for the network.
 Switch on the pump.
 Perform hydronic balancing of the underoor heating
circuit at the heating circuit distributor according to the
design engineer's specications.
 Do not draw o any DHW while testing the heating water
ow rate. Make sure that all thermostatic valves and un-
deroor heating control valves are fully open.
 After balancing is complete, check the set ow tempera-
ture again.
[2] Heating circuit without mixer | E2-HKU
Heating circuit connection inclusive of pipework in the base
station for connecting to a heating circuit without mixer, e.g.
radiators.
Shut-o valves and a zone valve for manual adjustment of the
heating circuit are integrated. Optional installation of an actu-
ator on the valve is possible.
D0000075000
[7.1] Pipework thermal insulation| E7-WDR-1
[7. 2] Pipework thermal insulation| E7-WDR-2
Thermal insulation for the pipework in the apartment module,
made of highly exible insulation material with high resistance
to water vapour diusion and low thermal conductivity

INSTALLATION
PROFI SELECT modular system
8| WSP-2-DUO, WSG-2-DUO
[8] Drain set E8-ES
Ball valves with hose connection for draining or venting
These can optionally be integrated into the ow or return on
the primary side.
D0000075030
[9] Contact thermostat | E9-ATR
Incl.
"GAT/7RC" contact thermostat instructions
Contact thermostat with thermal actuator for sealing o the
heating circuit with mixer if set temperature is exceeded
D0000075100
 Observe the enclosed instructions.
8.3 Accessories
Accessories for the PROFI SELECT modular system are intended
for installation on site and are supplied separately.
Installation of the accessories is described in chapter “Instal-
lation”.
Designation Description
Casing
Z3-GAK-DUO Casing for finished walls, short, for DUO stations
Z3-GUK-DUO Casing for unfinished walls, short, for DUO stations
Z3- GAL-DUO Casing for finished walls, long, for DUO stations
Z3-GUL-DUO Casing for unfinished walls, long, for DUO stations
Mounting rail
Z5-MS-7 Mounting rail
Z5-MS-9 Mounting rail
Heating circuit distributor
Z6-HKV-4-DUO Heating circuit distributor for DUO stations
Z6-HKV-5-DUO Heating circuit distributor for DUO stations
Z6-HKV-6-DUO Heating circuit distributor for DUO stations
Z6-HKV-7-DUO Heating circuit distributor for DUO stations
Z6-HKV-8-DUO Heating circuit distributor for DUO stations
Z6-HKV-9-DUO Heating circuit distributor for DUO stations
Z6-HKV-10-DUO Heating circuit distributor for DUO stations
Z6-HKV-12-DUO Heating circuit distributor for DUO stations
Control unit terminal strip
Z10-RKL Control unit terminal strip
Z10-RKL2 Control unit terminal strip
[3.9] Casing for nished walls, short | Z3-GAK-DUO
[3.11] Casing for nished walls, long | Z3-GAL-DUO
Incl.
- 2 rawl plugs, 2 screws
[3.10] Casing for unnished walls, short | Z3-GUK-DUO
[3.12] Casing for unnished walls, long | Z3-GUL-DUO
[5.2] Mounting rail | Z5-MS-7
[5.4] Mounting rail | Z5-MS-9
Fully wired mounting rail with shut-o valve for connecting
the apartment module
D0000075031

ENGLISH
INSTALLATION
PROFI SELECT modular system
WSP-2-DUO, WSG-2-DUO |9
[6.11] Heating circuit distributor | Z6-HKV-4-DUO
[6.12] Heating circuit distributor | Z6-HKV-5-DUO
[6.13] Heating circuit distributor | Z6-HKV-6-DUO
[6.14] Heating circuit distributor | Z6-HKV-7-DUO
[6.15] Heating circuit distributor | Z6-HKV-8-DUO
[6.16] Heating circuit distributor | Z6-HKV-9-DUO
[6.17] Heating circuit distributor | Z6-HKV-10-DUO
[6.18] Heating circuit distributor | Z6-HKV-12-DUO
Prefitted heating circuit distributor consisting of stainless
steel tubing incl. mounting rail, pressure-tested, mounted on
sound-insulated and zinc-plated base plate
In place of the pretted protective caps, actuators can be at-
tached directly to the integral valves.
Example HKV-9-DUO:
D0000075054
[10] Controller terminal strip | Z10-RKL
[10.1] Controller terminal strip | Z10-RKL2
Incl.
“RKL” control distributor installation instructions
Terminal strip for controller, for wiring actuators and room
thermostats
A 230VAC pump logic module is also integrated that will switch
the pump o if necessary.
Z10-RKL:
D0000075032
Z10-RKL 2:
D0000075032
 Observe the enclosed instructions.
Actuator and room temperature controller
The actuator tted on the valve for room heating and the tem-
perature controller can be used to set a seven-day program for
heating use, for example.
Designation Part number
Actuator
EFS 237740
Room temperature controller
WS-RT 2.0 233757
RTA-S UP 223344
RTA-S2 231061

INSTALLATION
Preparation
10 | WSP-2-DUO, WSG-2-DUO
9. Preparation
9.1 Installation location
 Install the appliance in a well vented, dry room that is free
from the risk of frost.
9.1.1 Routing supply lines
9.1.2 For installation on nished walls
Lines routed from below
D0000075187
Lines routed from behind
D0000075188
9.1.3 For installation on unnished walls
Lines routed from below
D0000075198
Lines routed from behind
D0000075199
9.2 Storage
 Store the appliance in a dry location in its original
packaging.
 We recommend covering the appliance to protect it from
dust and dirt.
 If the appliance is to be stored for an extended period,
pumps and actuating devices may have to be moved by
hand to prevent seizing of the assemblies.
9.3 Transport
 If possible, transport the appliance in its original
packaging.

ENGLISH
INSTALLATION
Installation
WSP-2-DUO, WSG-2-DUO | 11
10. Installation
!Material losses
Only use open-ended spanners of the right size to
tighten and release screw connections.
10.1 Appliance installation
 Only install the appliance after all preparatory installation
work has been completed.
 Select xing materials in accordance with the wall con-
struction/condition. In case of non-load bearing masonry,
mount the appliance on a frame stand.
 Existing installation ducts and casings for installation
on nished or unnished walls, which are available as
installation options or accessories, can be used for wall
mounting.
10.1.1 Preparing for installation
 Connect the appliance to a mounting rail – available as an
accessory – or to a heating circuit distributor. Ensure that
the tabs on the mounting rail or the heating circuit distrib-
utor engage in the recesses on the appliance.
 Place the at gasket between the union nuts on the ball
valves and the connection threads on the appliance.
 Tighten the union nuts (for torque see chapter "Specica-
tion/ Dimensions and connections").
Note
Alternatively, you can retrot the appliance. To elim-
inate contamination or other problems associated
with construction sites, it is sucient to install only
the mounting rail or heating circuit distributor during
the construction phase.
10.1.2 Installing the heating circuit distributor on
nished walls
Installation dimensions:
184
373
684
15
D0000075104
The installation dimension "373mm" refers to the clearance
from the oor covering.
 Mark out the positions of holes to be drilled for the appli-
ance on the wall (see chapter "Specication/ Dimensions
and connections").
 Mount the appliance on the wall using the enclosed rawl
plugs and screws.
 Tighten the screw connection between the appliance
and the mounting rail or heating circuit distributor (for
torque, see chapter "Specication/ Dimensions and
connections").
 Connect the mounting rail or heating circuit distributor to
the pipework with at gaskets.
10.1.3 Installing the casing for nished walls
Note
When positioning the heat interface unit, ensure that
the casing is ush with the nished oor.
150
370
557
118
102
15
D0000075184D0000075189
 Guide the recesses in the casing for nished walls – availa-
ble as an installation option or accessory – into the hooks
at the side of the mounting plate for the appliance from
above.

INSTALLATION
Installation
12| WSP-2-DUO, WSG-2-DUO
Removing the casing door
 Open the latch of the casing door.
 Tilt the casing door forwards. Lift the rebate of the casing
door from the frame.
10.1.4 Installation on unnished walls
The casing for unnished walls – available as an accessory – is
set into the wall. The appliance is installed in the casing after
it has been plastered in.
Removing the casing door and frame
 Open the latch of the casing door.
 Tilt the casing door forwards. Lift the rebate of the casing
door from the frame.
 Undo the four screws inside the corners of the casing for
unnished walls.
 Remove the frame.
Installing the casing for unnished walls
170
390
576
118
102
80
D0000075071
The minimum clearance (80mm) refers to the clearance from
the oor covering, allowing for any skirting boards. If no skirt-
ing boards or narrower ones will be used, the clearance can be
reduced to a minimum of 20mm.
 Create a wall recess with the specied dimensions (see
chapter "Specication/ Dimensions and connections").
 Set the casing for unnished walls into the wall recess.
 Secure the casing for unnished walls using suitable
screws (not part of the standard delivery). If setting the
casing for unnished walls into a drywall, the xing tabs
of the casing can be used as installation aids.
 Align the casing.
D0000075190
 Guide the appliance onto the hooks in the casing. Use the
rectangular recesses.
 Tighten the screw connection between the appliance
and the mounting rail or heating circuit distributor (for
torque, see chapter "Specication/ Dimensions and
connections").
 Connect the mounting rail or heating circuit distributor to
the pipework with at gaskets.
10.2 Water connection
!Material losses
Dirt and sludge can accumulate in the appliance and
cause overheating, noise, corrosion and faults in the
appliance.
 Thoroughly ush the heating system before con-
nection.
 Route the pipework up to the appliance.
 Connect the pipework to the shut-o valve of the appli-
ance ensuring that it is stress-free.
 Check the correct position of the shut-o valves.
10.3 Electrical connection
WARNING Electrocution Before any work on the appliance, ensure omnipolar
disconnection from the power supply.
Note Observe the operating and installation instructions for
the integral instantaneous water heater.
 Route the electrical connections into the appliance.
 Incorporate the appliance in the equipotential bonding.
Use the connection at the bottom left-hand section of the
mounting plate (min. 6mm²CU).

ENGLISH
INSTALLATION
Commissioning
WSP-2-DUO, WSG-2-DUO | 13
10.4 Completing the installation
10.4.1 Installation on nished walls
 Fit the casing door in reverse order to its removal.
10.4.2Installation on unnished walls
!Material losses
Incorrect installation can lead to ames and smoke
spreading through the supply duct in case of a re.
 Observe the re regulations.
 Insulate the wall recess correctly.
 Close o/plaster the wall recess.
D0000075191
 Place the frame on the casing for unnished walls so that
the 4xing tabs are located on the screws. Tighten the
screws.
 Fit the casing door in reverse order to its removal. Ensure
you insert the rebate of the casing door into the frame.
11. Commissioning
 Check the pipework and connections for leaks.
 Visually inspect the appliance for leaks.
 Open the shut-o valves.
Venting the DHW pipework
 Open a nearby DHW draw-o point until the pipework is
free from air.
Filling and venting the heating system
WARNING Electrocution Protect the electronics of the integral instantaneous
water heater from escaping water.
 Fill and vent the central heating system according to the
heat generator operating and installation instructions.
 Open the thermostatic valves of the connected radiators.
 Draw o hot water to make water ow through the heat
exchanger.
 Open the air vent screw (see chapter "Settings") until
water runs out.
 Bleed the connected radiators.
Checking/correcting the heating water ow rate for a
heating circuit with mixer
 Ensure heat supply through the central heat generator.
The ow temperature should have reached the design
value for the network.
 Set the temperature controller to the required ow tem-
perature at the control valve.
 Switch on the pump.
 Perform hydronic balancing of the underoor heating
circuit at the heating circuit distributor according to the
design engineer's specications.
 Do not draw o any DHW while testing the heating water
ow rate. Make sure that all thermostatic valves and un-
deroor heating control valves are fully open.
 After balancing is complete, check the set ow tempera-
ture again.
Checking the appliance
 Check the appliance function.

INSTALLATION
Settings
14| WSP-2-DUO, WSG-2-DUO
12. Settings
Note The required settings for the installation options are
described in chapter "Installation options".
DHW heating: Checking the outlet temperature/
adjusting the temperature controller
 Open a DHW draw-o point until approx. 8l/min of hot
water runs out. Set the temperature controller for DHW
heating to position5-6.
 Measure the temperature of the water running out. If the
outlet temperature is approx. 38°C, the setting can be left
as it is. If the temperature is signicantly higher or lower,
adjust the temperature controller accordingly. The setting
range is approx. 30-55°C.
13. Appliance handover
 Explain the appliance function to users and familiarise
them with its operation.
 Make users aware of potential dangers.
 Recommend taking out a maintenance contract.
 Hand over these instructions.
14. Maintenance
WARNING Electrocution Always isolate the appliance from the power supply
when performing maintenance work, using an isola-
tor with a contact opening of at least 3mm.
 Remove the casing door.
 Shut o the heating ow, heating return and the cold
water supply.
 Clean the strainer in the dirt lter.
 Visually inspect the appliance for leaks.
Completing maintenance work
 Open the shut-o valves required for operation.
 Check the condition of the appliance and clean o any
external dirt.
 If necessary, vent the heating system.
 Check the appliance function.
 Check the appliance for leaks.
 Ret the casing door.
 Log the inspection/maintenance work performed.
15. Troubleshooting
Problem Cause Remedy
DHW and radiators do
not heat up.
Shut-off valves are
closed.
Check that all shut-off
valves in the appliance
are open.
The strainer in the dirt
filter is contaminated.
Check that the strainer
in the dirt filter is free
from contamination.
The heat exchanger is
blocked.
Check whether the heat
exchanger is blocked.
Replace or clean it
with suitable cleaning
agents.
DHW intermittently
does not heat up.
The central heating
pump rating is incor-
rect.
Check the rating of the
central heating pump.
The flow rate of the
heating system is incor-
rectly set.
Check the flow rate.
The start time of the
heating system is incor-
rectly set.
Check the start time
of the central heating
system.
Radiators do not heat
up.
The valve for room
heating is closed.
Check and, if necessary,
correct the settings at
the room temperature
controller.
Radiators do not heat
up.
The valve for room
heating is closed.
Check and, if necessary,
correct the settings at
the room temperature
controller.

ENGLISH
INSTALLATION
Specication
WSP-2-DUO, WSG-2-DUO | 15
16. Specication
16.1 Dimensions and connections
Note Depending on the range of functions, a mounting rail
or heating circuit distributor will be required to con-
nect the base station.
 The screw connection torque of the mounting rail
or the heating circuit distributor should be 35Nm.
WSP-2-DUO for DHW and heating circuit without mixer
c01
e02
d33
c06
c04
e01
d34
733
17 675
630
788
210
274
336
467
531
596
662
43
176
D0000074997
WSP-2-DUO WSG-2-DUO
c01 Cold water inlet Male thread G 3/4 G 3/4
c04 Cold water outlet Male thread G 3/4 G 3/4
c06 DHW outlet Male thread G 3/4 G 3/4
d33 Heat source flow Male thread G 3/4 G 3/4
d34 Heat source return Male thread G 3/4 G 3/4
e01 Heating flow Male thread G 3/4 G 3/4
e02 Heating return Male thread G 3/4 G 3/4
WSP-2-DUO for DHW and heating circuit with mixer
[1.1] Heating circuit with mixer, thermostatically
controlled|
E1-HKT
c01
e31
d33
c06
c04
d34
e30
733
17 675
630
788
210
274
336
467
531
596
662
43
176
D0000075074
WSP-2-DUO/HKT
c01 Cold water inlet Male thread G 3/4
c04 Cold water outlet Male thread G 3/4
c06 DHW outlet Male thread G 3/4
d33 Heat source flow Male thread G 3/4
d34 Heat source return Male thread G 3/4
e30 Heating flow, mixed Male thread G 3/4
e31 Heating return, mixed Male thread G 3/4

INSTALLATION
Specication
16 | WSP-2-DUO, WSG-2-DUO
WSP-2-DUO for DHW with heating circuit with mixer and
heating circuit distributor
[1.1] Heating circuit with mixer, thermostatically
controlled|
E1-HKT
[6.11] Heating circuit distributor | Z6-HKV
733
1381
133
353
117
101
176
539
D0000076092
WSP-2-DUO for DHW with heating circuit with mixer and
heating circuit without mixer
[1.1] Heating circuit with mixer, thermostatically
controlled|
E1-HKT
[2] Heating circuit without mixer | E2-HKU
c01
e31
e02
d33
c06
c04
e01
d34
e30
733
17 675
630
788
210
274
336
402
467
531
596
628
662
43
110
176
D0000075073
WSP-2-DUO/HKT/
HKU
c01 Cold water inlet Male thread G 3/4
c04 Cold water outlet Male thread G 3/4
c06 DHW outlet Male thread G 3/4
d33 Heat source flow Male thread G 3/4
d34 Heat source return Male thread G 3/4
e01 Heating flow Male thread G 3/4
e02 Heating return Male thread G 3/4
e30 Heating flow, mixed Male thread G 3/4
e31 Heating return, mixed Male thread G 3/4

ENGLISH
INSTALLATION
Specication
WSP-2-DUO, WSG-2-DUO | 17
[3.9] Casing for nished walls, short | Z3-GAK-DUO
735
850
180
D0000075038
[3.10] Casing for unnished walls, short | Z3-GUK-DUO
780
880
740
920
880 880
180-205
D0000075050
[3.11] Casing for nished walls, long | Z3-GAL-DUO
735
1400
180
D0000075037
[3.12] Casing for unnished walls, long | Z3-GUL-DUO
780
880
740
1440
1400 1400
180-205
D0000075049

INSTALLATION
Specication
18| WSP-2-DUO, WSG-2-DUO
16.2 Wiring diagrams
Thermostatically controlled heating circuit with controller terminal strip, contact thermostat and actuators
(E1-HKT, E9-ATR, Z10-RKL, EFS)
L1 L1
PE PE
L1
N
L1
N
L1
N
L1
HZ 1
L1
N
A
CO
HZ 2
L1
N
A
CO
HZ 3
L1
N
A
CO
HZ 4
L1
N
A
CO
HZ 5
L1
N
A
CO
HZ 6
L1
N
A
CO
HZ 7
L1
N
A
CO
HZ 8
L1
N
A
CO
HZ 9
L1
N
A
CO
HZ 10
L1
N
A
CO
L1
STA 1
N
L1
N
L1
N
L1 L2 L1 L2
230V
24V
L1
N
STA 2
L1
N
STA 3
L1
N
STA 3
L1
N
STA 5
L1
N
STA 6
L1
N
STA 7
L1
N
STA 8
L1
STA 9
N
L1
N
STA 10
L1
N
STA 11
L1
N
STA 12
L1
N
STA 13
L1
N
STA 14
L1
N
STA 15
L1
N
STA 16
L1
N
STA 17
L1
N
STA 18
L1
N
STA 19
L1
N
STA 20
L1
N
STA 21
N PEL
230 V / 16A
L1
N
A
CO
MIN MAX
M
L1
N
A
CO
MIN MAX
Detail B
Detail B
Detail C
Detail C
Detail A
Detail A
N L1
AB
A
+ –
1324567
Tw
E9 - Anlegetemperaturregler
NL1
AB
A
Detail D
Detail D
D0000080388

ENGLISH
INSTALLATION
Specication
WSP-2-DUO, WSG-2-DUO | 19
SEHC control unit (electronically controlled heating circuit E1-HKE)
N PE
+
PT 1000
L
N
-
230 V / 16A
Außenfühler
Rücklauühler Heizung
Vorlauühler Heizung
PT 1000 PT 1000
R4 R4
8 10
0-10V
79
VBus
11
PWM
6
VBus Anbindung
zur Weitergabe
des Außenfühlers
SEHC
IP20
S5
5
S4
4
S3
3
S2
2
S1
1L
L
R1
LL
R3 R2
PE
NN N
R3 R2 R1 N
T4A
100-240 V
50-60 Hz
M
D0000080389
Master/slave connection SEHC with SEHCM (electronically controlled heating circuit E1-HKE with SEHCM)
PT 1000
R4 R4
8 10
0-10V
79
VBus
11
PWM
6
VBus Anbindung
zur Weitergabe
des Außenfühlers
SEHC
Mischer AUF
Mischer ZU
Heizkreispumpe
IP20
S5
5
S4
4
S3
3
S2
2
S1
1
Außenfühler
Rücklauühler Heizung
Vorlauühler Heizung
PT 1000
L
L
R1
LL
R3 R2
Power
PE
NN N
R3 R2 R1 N
T4A
100-240 V
50-60 Hz
PT 1000
R4 R4
8 10
0-10V
79
VBus
11
PWM
6
VBus Anbindung
zur Weitergabe
des Außenfühlers
SEHC
Mischer AUF
Mischer ZU
Heizkreispumpe
IP20
S5
5
S4
4
S3
3
S2
2
S1
1
Außenfühler
Rücklauühler Heizung
Vorlauühler Heizung
PT 1000
L
L
R1
LL
R3 R2
Power
PE
NN N
R3 R2 R1 N
T4A
100-240 V
50-60 Hz
PT 1000
R4 R4
8 10 9
VBus
11
VBus Anbindung
zur Weitergabe
des Außenfühlers
SEHCM
Mischer AUF
Mischer ZU
Heizkreispumpe
IP20
S1
1
Außenfühler
L
L
R2
Power
PE
NN N
R2 N
T2A
100-240 V
50-60 Hz
S1 VBus
VBus
max. 20 Teilnehmer
®
AF FAP13
. . .
. . .
D0000080390

INSTALLATION
Specication
20| WSP-2-DUO, WSG-2-DUO
Electronically controlled heating circuit with controller terminal strip, contact thermostat and actuators
(E1-HKE, E9-ATR, Z10-RKL, EFS)
R4 R4
8 10
0-10V
79
VBus
11
PWM
6
VBus Anbindung
zur Weitergabe
des Außenfühlers
SEHC
IP20
S5
5
S4
4
S3
3
S2
2
S1
1L
L
R1
LL
R3 R2
PE
NN N
R3 R2 R1 N
T4A
100-240 V
50-60 Hz
N PEL
230 V / 16A
+
PT 1000
-
PT 1000 PT 1000
M
N
L1 L1
PE PE
L1
N
L1
N
L1
N
L1
HZ 1
L1
N
A
CO
HZ 2
L1
N
A
CO
HZ 3
L1
N
A
CO
HZ 4
L1
N
A
CO
HZ 5
L1
N
A
CO
HZ 6
L1
N
A
CO
HZ 7
L1
N
A
CO
HZ 8
L1
N
A
CO
HZ 9
L1
N
A
CO
HZ 10
L1
N
A
CO
L1
STA 1
N
L1
N
L1
N
L1 L2 L1 L2
230V
24V
L1
N
STA 2
L1
N
STA 3
L1
N
STA 3
L1
N
STA 5
L1
N
STA 6
L1
N
STA 7
L1
N
STA 8
L1
STA 9
N
L1
N
STA 10
L1
N
STA 11
L1
N
STA 12
L1
N
STA 13
L1
N
STA 14
L1
N
STA 15
L1
N
STA 16
L1
N
STA 17
L1
N
STA 18
L1
N
STA 19
L1
N
STA 20
L1
N
STA 21
L1
N
A
CO
MIN MAX
L1
N
A
CO
MIN MAX
Detail E
Detail E
Detail C
Detail A
Detail A
Detail C
+ –
1324567
Tw
E9 - Anlegetemperaturregler
Detail B
N L1
AB
A
NL1
AB
A
Detail D
Detail D
Detail B
D0000080391