STIEBEL ELTRON HSBB 180 Plus Instruction Manual

OPERATION AND INSTALLATION
Integral cylinder
» HSBB 180 Plus (GB)
» HSBB 180 S Plus (GB)

2| HSBB 180 Plus (GB)|HSBB 180 S Plus (GB) www.stiebel-eltron.com
CONTENTS | SPECIAL INFORMATION
SPECIAL INFORMATION
- The appliance may be used by children over
8years of age and persons with reduced phys-
ical, sensory or mental capabilities or a lack of
experience and expertise, provided that they are
supervised or they have been instructed on how
to use the appliance safely and have understood
the potential risks. Children must never play with
the appliance. Cleaning and user maintenance
must not be carried out by children without
supervision.
- The connection to the power supply must be in
the form of a permanent connection. Ensure the
appliance can be separated from the power sup-
ply by an isolator that disconnects all poles with
at least 3mm contact separation.
- Observe all applicable national and regional reg-
ulations and instructions.
- Observe minimum distances (see chapter “Instal-
lation/ Preparations/ Installation site”).
- Only a qualified contractor should carry out in-
stallation, commissioning, maintenance and re-
pair of the appliance.
DHW cylinder
- Drain the appliance as described in chapter
“Installation/ Maintenance/ Draining the DHW
cylinder”.
- Observe the maximum permissible pressure (see
chapter “Installation/ Specification/ Data table”).
- The DHW cylinder is under supply pressure. If no
diaphragm expansion vessel is installed, expan-
sion water will drip from the safety valve during
heat-up.
- Regularly activate the safety valve to prevent
it from becoming blocked, e.g. by limescale
deposits.
- The safety valve drain aperture must remain open
to atmosphere.
SPECIAL INFORMATION
OPERATION
1. General information �����������������������������������������3
1.1 Relevant documents_____________________________________________ 3
1.2 Safety instructions_______________________________________________ 3
1.3 Other symbols in this documentation _______________________ 3
1.4 Information on the appliance _________________________________ 3
1.5 Units of measurement __________________________________________ 3
2. Safety����������������������������������������������������������4
2.1 Intended use______________________________________________________ 4
2.2 General safety instructions ____________________________________ 4
2.3 Test symbols ______________________________________________________ 4
3. Appliance compatibility �������������������������������������4
4. Appliance description ���������������������������������������4
5. Settings �������������������������������������������������������5
6. Cleaning, care and maintenance ���������������������������5
7. Troubleshooting ����������������������������������������������5
INSTALLATION
8. Safety����������������������������������������������������������6
8.1 General safety instructions ____________________________________ 6
8.2 Instructions, standards and regulations ____________________ 6
9. Appliance description ���������������������������������������6
9.1 Standard delivery________________________________________________ 6
9.2 Accessories________________________________________________________ 6
10. Preparation ���������������������������������������������������6
10.1 Installation site___________________________________________________ 6
10.2 Transport and handling ________________________________________ 7
11. Installation����������������������������������������������������7
11.1 Positioning the appliance ______________________________________ 7
11.2 Removing/fitting the front casing ____________________________ 8
11.3 Heating water connection and safety valve ________________ 8
11.4 DHW connection and safety assembly_______________________ 9
11.5 Filling the system_______________________________________________ 10
11.6 Venting the appliance__________________________________________ 11
12. Electrical connection��������������������������������������� 11
12.1 Electric emergency/booster heater and control voltage 12
12.2 Sensor installation______________________________________________ 14
12.3 Remote control__________________________________________________ 14
13. Commissioning ��������������������������������������������� 14
13.1 Checks before commissioning the heat pump manager 14
13.2 Commissioning the heat pump manager __________________ 14
13.3 Appliance handover ____________________________________________ 15
14. Shutting down the system �������������������������������� 15
15. Maintenance ������������������������������������������������ 15
16. Specification ������������������������������������������������ 16
16.1 Dimensions and connections_________________________________ 16
16.2 Hydraulic diagram______________________________________________ 17
16.3 Wiring diagram _________________________________________________ 18
16.4 Energy consumption data_____________________________________ 22
16.5 Data table ________________________________________________________ 22
GUARANTEE
ENVIRONMENT AND RECYCLING

OPERATION
General information
www.stiebel-eltron.com HSBB 180 Plus (GB)|HSBB 180 S Plus (GB)| 3
OPERATION
1. General information
The chapters “Special information” and “Operation” are intended
for appliance users and qualified contractors.
The chapter “Installation” is intended for qualified contractors.
Note
Read these instructions carefully before using the appli-
ance and retain them for future reference.
Pass on these instructions to a new user if required.
1.1 Relevant documents
Operating and installation instructions for the WPM heat
pump manager
Operating and installation instructions for the connected
heat pump
Operating and installation instructions for all other sys-
tem components
1.2 Safety instructions
1.2.1 Structure of safety instructions
!
KEYWORD Type of risk
Here, possible consequences are listed that may result
from failure to observe the safety instructions.
 Steps to prevent the risk are listed.
1.2.2 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-seri-
ous or minor injury.
1.3 Other symbols in this documentation
Note
General information is identified by the adjacent symbol.
 Read these texts carefully.
Symbol Meaning
Material losses
(appliance damage, consequential losses and environmen-
tal pollution)
Appliance disposal
 This symbol indicates that you have to do something. The ac-
tion you need to take is described step by step.
These symbols show you the software menu level (in
this example level3).
1.4 Information on the appliance
Connections
Symbol Meaning
Inlet/ intake
Drain/ outlet
Domestic hot water
DHW circulation
Heat pump
Heating
1.5 Units of measurement
Note
All measurements are given in mm unless stated oth-
erwise.
!
!

OPERATION
Safety
4| HSBB 180 Plus (GB)|HSBB 180 S Plus (GB) www.stiebel-eltron.com
2. Safety
2.1 Intended use
The appliance is used for heating and seasonal cooling of rooms
and for DHW heating. For sub dew point cooling, CDT 180 conden-
sate pump and condensate pan accessories must be used. With
the CDT 180 accessories, cooling rooms is only permissible with
monitoring of the dew point. Sub dew point cooling is only ever
permissible on a seasonal basis with a subsequent heating period.
The appliance is intended for domestic use. It can be used safely
by untrained persons. The appliance can also be used in non-do-
mestic environments, e.g.in small businesses, 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.
2.2 General safety instructions
WARNING Burns
There is a risk of scalding at outlet temperatures in ex-
cess of 43°C.
!
WARNING Injury
The appliance may be used by children over 8 years of
age and persons with reduced physical, sensory or men-
tal capabilities or a lack of experience and expertise,
provided that they are supervised or they have been
instructed on how to use the appliance safely and have
understood the potential risks. Children must never play
with the appliance. Cleaning and user maintenance must
not be carried out by children without supervision.
!
WARNING Injury
For safety reasons, only operate the appliance with the
front casing closed.
Note
The DHW cylinder is under supply pressure. If no dia-
phragm expansion vessel is installed, expansion water
will drip from the safety valve during heat-up.
 If water continues to drip when heating is complet-
ed, please inform your qualified contractor.
2.3 Test symbols
See type plate on the appliance.
3. Appliance compatibility
The appliance can be operated in conjunction with the following
air source heat pumps:
- WPL-A 05/07 HK 230 Premium
- WPL 07-17 ACS classic
- HPA-O 05.1/07.1 CS Premium
- HPA-O 3-8 CS Plus
4. Appliance description
The appliance comprises a hydraulic module and an integral DHW
cylinder and is equipped with a removable front casing. The appli-
ance is connected hydraulically and electrically to the heat pump.
In addition to the DHW cylinder, the following system components
are integrated:
- Heat pump manager
- Cylinder charging pump/ heating circuit pump
- Multifunction assembly with safety valve, 3-way diverter
valve and emergency/booster heater for monoenergetic
operation
DHW cylinder
The steel cylinder is equipped with special directly applied enamel
coating on the inside and a sacrificial anode. The sacrificial anode
protects the cylinder interior from corrosion.
The heating water heated by the heat pump is pumped through an
indirect coil inside the DHW cylinder. The heat channelled through
the indirect coil is thus transferred to the domestic hot water. The
integral heat pump manager regulates the DHW heating to the
required temperature.
Heat pump manager (WPM)
The system is controlled by means of the integral heat pump man-
ager.
The heat pump manager is suitable for the control of a direct
heating circuit and a heating circuit with mixer.
You can set the times and temperatures for heating operation and
heating DHW. Remote controls for controlling the heating circuit
are available as accessories.
For detailed information, see the enclosed operating and instal-
lation instructions for the WPMheat pump manager.
Multifunction assembly (MFG)
3-way diverter valve: The multifunction assembly switches be-
tween heating circuit and DHW heating.
Safety valve: When the pressure is high, the safety valve opens to
relieve the pressure in the system.
Air vent valve: Components are vented through air vent valves,
e.g. pipes or indirect coil.

OPERATION
Settings
www.stiebel-eltron.com HSBB 180 Plus (GB)|HSBB 180 S Plus (GB)| 5
Emergency/booster heater: in standard mode, the emergency/
booster heater can support the heat pump in monoenergetic
mode below the dual mode point. Depending on the setting and
connected heat pump, the emergency/booster heater can also be
used to back up DHW heating or in pasteurisation mode. In the
event of a heat pump malfunction, the emergency/booster heater
can temporarily ensure DHW heating and the heating of rooms.
5. Settings
!
Material losses
The system‘s active frost protection is not guaranteed if
the power supply is interrupted.
 Never interrupt the power supply even outside the
heating season.
Note
The heat pump manager has an automatic summer/win-
ter changeover so you can leave the system switched on
in summer.
The system is controlled by means of the integral heat pump
manager. Please observe the heat pump manager operating and
installation instructions.
OKMENU
D0000064711
6. Cleaning, care and maintenance
 Have the electrical safety of the appliance and the function
of the safety assembly regularly checked by a qualified
contractor.
 Have the sacrificial anode checked by a qualified contractor
after the first two years of use. The qualified contractor will
then determine the intervals at which the sacrificial anode
should be checked.
 Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the unit.
7. Troubleshooting
Problem Cause Remedy
The water does not heat
up. The heating does not
work.
There is no power. Check the fuses/ MCBs in
your fuse box/ distribu-
tion board.
Observe the information about troubleshooting in other applicable
documents (see chapter “Other applicable documents”).
If you cannot remedy the fault, contact your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate (000000-0000-000000).
No.: 000000-0000-000000
Made in Germany
D0000102715

INSTALLATION
Safety
6| HSBB 180 Plus (GB)|HSBB 180 S Plus (GB) www.stiebel-eltron.com
INSTALLATION
8. Safety
Only a qualified contractor should carry out installation, commis-
sioning, maintenance and repair of the appliance.
8.1 General safety instructions
We guarantee trouble-free function and operational reliability
only if original accessories and spare parts intended for the unit
are used.
8.2 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations
and instructions.
9. Appliance description
9.1 Standard delivery
The following are delivered with the appliance:
- Operating and installation instructions for the WPM heat
pump manager
- Outside temperature sensor AFPT
- 3adjustable feet
- Drain hose
- DHW circulation line and flat gasket union nut
- Expansion vessel (incl. fastening material)
- Installation kit (pressure reducing valve, check valves, expan-
sion relief valve, tundish)
9.2 Accessories
Required accessories
Safety assemblies and pressure reducing valves are available
to suit the prevailing supply pressure. These type-tested safety
assemblies protect the appliance against impermissible excess
pressure.
Required for area cooling:
- Pt1000 temperature sensor
- FET remote control
Additional accessories
- Remote control for heating operation
- High limit safety cut-out STB-FB
- Water softening fitting HZEA
- Segmented anode
- CDT 180 condensate pump and condensate pan (required for
continuous cooling without dew point monitoring)
10. Preparation
10.1 Installation site
!
Material losses
Never install the appliance in wet rooms.
Install the appliance near the draw-off point in a dry room free
from the risk of frost. To reduce line losses, keep the distance short
between the appliance and the heat pump.
Ensure the floor has sufficient load bearing capacity and evenness
(for weight, see chapter “Specification/ Data table”).
The room must not be subject to a risk of explosions arising from
dust, gases or vapours.
If you are installing the appliance in a boiler room together with
other heating equipment, ensure that the operation of the other
heating equipment will not be impaired.
Minimum clearances
≥200
≥400
≥800
≥100≥100
D0000103271
Minimum ceiling clearance: Without DHW circulation 200 mm,
with DHW circulation 400 mm.
 Maintain the minimum clearances to ensure trouble-free op-
eration of the appliance and facilitate maintenance work.

INSTALLATION
Installation
www.stiebel-eltron.com HSBB 180 Plus (GB)|HSBB 180 S Plus (GB)| 7
10.2 Transport and handling
!
Material losses
Store and transport the appliance at temperatures be-
tween -20°C and +60°C.
Note
Two people are required when installing the adjustable
feet and transporting the appliance.
D0000102526
 Undo the 3screws on the non-returnable pallet.
!
Material losses
Never roll the appliance over the edge of the pallet.
Installing supplied carrying straps and adjustable feet
D0000102527
4
3
2
1
5
1 Carrying strap
2 Washer
3 Adjustable foot
4 Pipe
5 Threaded hole
 Slide a pipe over one carrying strap.
 Fold over the end of the carrying straps with the two holes
and insert an adjustable foot with washers into the carrying
strap, as shown in the figure.
 Tilt the appliance.
 Screw the adjustable foot with the carrying strap into one
of the threaded holes (shown in the figure) in the appliance
base.
 Fit the second carrying strap likewise.
 Screw an adjustable foot without a carrying strap into the
threaded hole in the appliance base.
D0000103273
11
1
1 Carrying straps
!
Material losses
Always carry the appliance by the carrying straps.
Never transport the appliance using a hoist.
During transportation, never subject the pipe connectors
to any strain.
Protect the appliance against heavy impact during trans-
port.
 Lift the appliance off the pallet by the carrying straps.
 After transportation, tuck the lower carrying straps under the
appliance. You can also cut off the upper and lower carrying
straps.
11. Installation
11.1 Positioning the appliance
 When positioning the appliance, observe minimum clearanc-
es (see chapter “Preparations/ Installation site”).
 Use the adjustable feet to compensate for any unevenness in
the floor.

INSTALLATION
Installation
8| HSBB 180 Plus (GB)|HSBB 180 S Plus (GB) www.stiebel-eltron.com
11.2 Removing/fitting the front casing
Removing the front casing
D0000103275
1
1 Front panel
 Remove the screws on the left and right of the front panel.
 Carefully pull the front panel forwards to remove it from
the appliance and store it securely so that it cannot tip over,
without putting strain on the cable connections.
D0000102755
XE06
AA01-X1.18
 To be able to store the front panel at a distance from the ap-
pliance, loosen the cable tie, unplug the connector from the
electronic assembly for operation (AA01-X1.18) and the earth
(XE06) at the heat pump manager and store the front panel
securely so that it cannot tip over.
Fitting the front casing
Fit the front casing in reverse order. Take care to position the
connection lines correctly and not to pinch any cables.
11.3 Heating water connection and safety valve
11.3.1 Safety instructions
!
Material losses
The heating system to which the appliance is connected
must be installed by a qualified contractor in accord-
ance with the water installation drawings in the technical
guides.
!
Material losses
When fitting additional shut-off valves, install a further
safety valve in an accessible location on the heat gen-
erator itself or in the flow line in close proximity to the
heat generator.
There must not be a shut-off valve between the heat gen-
erator and the safety valve.
Note
The use of non-return valves in the charging circuits be-
tween the heat generator and the buffer or DHW cylin-
der can impair the function of the integral multifunction
assembly (MFG) and lead to faults in the heating system.
 Only use our standard hydraulic solutions for the
installation of the appliances.
Oxygen diffusion
!
Material losses
Avoid open vented heating systems and underfloor
heating systems with plastic pipes that are permeable
to oxygen.
In underfloor heating systems with plastic pipes that are per-
meable to oxygen and in open vented heating systems, oxygen
diffusion may lead to corrosion on the steel components of the
heating system (e.g. on the indirect coil of the DHW cylinder, on
buffer cylinders, steel radiators or steel pipes).
!
Material losses
The products of corrosion (e.g. rusty sludge) can set-
tle in the heating system components, which may re-
sult in a lower output or fault shutdowns due to reduced
cross-sections.
Supply lines
 The maximum permissible line length between the appli-
ance and the heat pump will vary, depending on the version
of the heating system (pressure drop). As a standard value,
assume a maximum line length of 10m and a pipe diameter
of 22mm.
 Protect the flow and return lines against frost with sufficient
thermal insulation.
 Also protect all supply lines against humidity, damage and
UV radiation by means of a conduit.
 Connect the hydraulic connections with flat gaskets.
Pressure differential
If the available external pressure difference is exceeded, the pres-
sure drop in the heating system could result in a reduced heating
output.
 When sizing the pipes, ensure that the available external
pressure differential is not exceeded (see chapter “Specifica-
tion/ Data table”).
 When calculating the pressure drop, take account of the flow
and return lines and the pressure drop of the heat pump.
The pressure drop must be covered by the available pressure
differential.

INSTALLATION
Installation
www.stiebel-eltron.com HSBB 180 Plus (GB)|HSBB 180 S Plus (GB)| 9
11.3.2 Heating water connection
Installation example:
1
D0000103276
1 Pipes carrying heating water
 Thoroughly flush the pipes before connecting the heat pump.
Foreign bodies (e.g. welding pearls, rust, sand, sealant, etc.)
can impair the operational reliability of the heat pump.
 Install the heating water pipes (see chapter “Specification/
Dimensions and connections”).
Safety valve drain hose
D0000103253
1
1 Safety valve drain hose
 Unroll the safety valve drain hose connected to the multi-
function assembly.
 On one of the lower prepared openings on the left or right,
remove just enough insulating material as necessary for the
drain hose, in order to minimise the exchange of air.
 Route the drain hose through the prepared opening from the
appliance.
 Route the drain hose with a constant fall to a drain.
 Ensure that the drain hose is open to the outside.
 Secure the drain hose above the drain to prevent any hose
movement in the event of water being discharged.
!
Material losses
Route the drain hose to a drain to enable water to drain
freely when the safety valve is open.
11.4 DHW connection and safety assembly
11.4.1 Safety instructions
!
Material losses
The maximum permissible pressure must not be exceed-
ed (see chapter “Specification/ Data table”).
!
Material losses
Operate the appliance only with pressure-tested taps.
Note
The use of non-return valves in the charging circuits be-
tween the heat generator and the buffer or DHW cylin-
der can impair the function of the integral multifunction
assembly (MFG) and lead to faults in the heating system.
 Only use our standard hydraulic solutions for the
installation of the appliances.
Cold water line
Galvanised steel, stainless steel, copper and plastic are approved
materials.
!
Material losses
A safety valve is required.
DHW line, DHW circulation line
Stainless steel, copper and plastic are approved materials.
11.4.2 Fitting the DHW circulation line (optional)
A DHW circulation line with external DHW circulation pump can
be fitted to the DHW circulation connection (see chapter “Specifi-
cation/ Dimensions and connections”).
D0000103254
3
5
4
2
1
1 Union nut
2 Insulating sleeve
3 DHW circulation line
4 Gasket
5 “DHW circulation” connection
 Remove the sealing cap from the DHW circulation connection
(see chapter “Specification/ Dimensions and connections”).
 Connect the DHW circulation line with the gasket, the insulat-
ing bushing and the flat gasket union nut.

INSTALLATION
Installation
10 | HSBB 180 Plus (GB)|HSBB 180 S Plus (GB) www.stiebel-eltron.com
11.4.3 DHW connection and safety assembly
 Flush the pipes thoroughly.
 Install the DHW outlet line and the cold water inlet line (see
chapter “Specification/ Dimensions and connections”). Con-
nect the hydraulic connections.
 Install a type-tested safety valve in the cold water supply
line. Please note that, depending on the supply pressure, you
may also need a pressure reducing valve.
 Size the drain pipe so that water can drain off unimpeded
when the safety valve is fully opened.
 The safety valve drain aperture must remain open to
atmosphere.
 Install the safety valve drain pipe with a constant fall to the
drain.
11.5 Filling the system
Heating circuit water quality
Carry out a fill water analysis before filling the system. This analy-
sis may, for example, be requested from the relevant water supply
utility.
To avoid damage as a result of scaling, it may be necessary to
soften or desalinate the fill water. The fill water limits specified
in chapter “Specification/ Data table” must always be observed.
 Recheck these limits 8-12weeks after commissioning and
during the annual system service.
!
Material losses
Never switch on the power before filling the system.
Note
With a conductivity >1000μS/cm, desalination treatment
is recommended in order to avoid corrosion.
Note
If you treat the fill water with inhibitors or additives, the
same limits apply as for desalination.
Note
Suitable appliances for water softening, as well as for
filling and flushing heating systems, can be obtained via
trade suppliers.
11.5.1 Flushing out the hot water system
 Before turning on the water supply, open all taps. Allow
the system to fill and flush out all flux and debris from the
installation.
11.5.2 Filling the heating system
Note
Fill the heating system exclusively via the left-hand drain
& fill valve.
In the delivered condition, the 3-way diverter valve of the mul-
tifunction assembly is in its centre position, so that the heating
circuit and the heat exchanger for DHW heating are filled evenly.
When power is switched on, the 3-way diverter valve automatically
switches to heating mode.
To fill or drain the system later, you must first place the 3-way
diverter valve into its centre position.
To set the heat pump manager:
 With the MENU key, call up the main menu.
 Select the menu or value and confirm with OK:
 DIAGNOSIS
 RELAY TEST SYSTEM
DRAIN HYD
D0000102722
 Fill the heating system via the left-hand drain & fill valve.
 Vent the pipework.
11.5.3 DHW cylinder filling
!
Material losses
Some fluxes used to solder pipes and fittings need to be
flushed out with hot water.
 Heat the cylinder to its normal operating tempera-
ture and flush all pipe work with hot water to ensure
all flux and debris is removed from the system.
 Fill the DHW cylinder via the cold water connection in com-
pliance with the UK Water Supply (Water Fittings) Regula-
tions 1999, Section 8 G24.
 Open all downstream draw-off valves until the appliance is
full and the pipework is free of air.
 Adjust the flow rate. For this, observe the maximum permis-
sible flow rate with a fully opened tap (see chapter “Specifi-
cation/ Data table”). If necessary reduce the flow rate at the
butterfly valve of the safety assembly.
 Carry out a tightness check.
 Check the safety valve.

INSTALLATION
Electrical connection
www.stiebel-eltron.com HSBB 180 Plus (GB)|HSBB 180 S Plus (GB)| 11
11.6 Venting the appliance
D0000103256
1
1
2
1 Air vent valve
2 PCB
 Vent the pipework and indirect coil by pulling up the red cap
on the air vent valves.
 Close the air vent valves after the venting process.
!
Material losses
Close the air vent valves again after venting.
12. Electrical connection
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.
 Before any work on the appliance, disconnect all
poles from the power supply.
WARNING Electrocution
The connection to the power supply must be in the form
of a permanent connection. Ensure the appliance can be
separated from the power supply by an isolator that dis-
connects all poles with at least 3mm contact separation.
This requirement can be met by using contactors, circuit
breakers, fuses/MCBs, etc.
!
Material losses
Provide separate fuses for the two power circuits of the
appliance and the control unit.
!
Material losses
Provide separate fuses/MCBs for the two power circuits,
i.e. for the compressor and the electricemergency/boost-
er heater circuits.
!
Material losses
Observe the type plate. The specified voltage must match
the mains power supply.
Note
You must have permission to connect the appliance from
the relevant power supply utility.
The terminal box of the appliance is located behind the front casing
(see chapter “Installation/ Removing/ fitting the front casing”).
D0000103257
1
1 Cable entry plug
 Cut the 4 cable entry plugs only as much as required for the
cable diameter in order to minimise the exchange of air.
 Route all power supply cables and sensor leads into the ap-
pliance through the cable entry from the left or right. From
the left, route the cables behind the terminal box to the
right-hand side. Lay the lines on the right-hand side through
the empty conduits and cable entry plugs.
 Connect the power cables and sensor leads as detailed
below.
Install cables with the following cross-sections in accordance with
the respective fuse protection:
Fuse protec-
tion
Assignment Cable cross-section
B 16A Electric emergency/
booster heater
(DHC)
Three-phase
2.5mm²
1.5mm² with only two live wires, rout-
ing according to applicable regulations
B 16A Electric emergency/
booster heater
(DHC)
Single phase
2.5mm²
1.5mm² when routing a multi-core
cable on a wall or in an electrical con-
duit on a wall
B 16A Control unit 1.5mm²

INSTALLATION
Electrical connection
12 | HSBB 180 Plus (GB)|HSBB 180 S Plus (GB) www.stiebel-eltron.com
12.1 Electric emergency/booster heater and control
voltage
Appliance
function
Effect of the electric emergency/booster
heater
Mono energetic
operation
If the dual mode point is undershot, the electric emergen-
cy/booster heater safeguards both the heating operation
and the provision of high DHW temperatures.
Emergency mode Should the heat pump suffer a fault that prevents its con-
tinued operation, the heating output will be covered by
the electric emergency/booster heater.
HSBB180: Electrical connection three-phase
NL3 L2 L1
317964-41782
D0000102543
XD02 Electric emergency/booster heater (DHC)
Connected load Terminal assignment
2.9 kW PE N L1
5.9 kW PE N L2 L1
8.8 kW PE NL3 L2 L1
 Connect the electrical emergency/booster heater with the
desired rating as detailed in the table.
HSBB180S: Electrical connection single phase
NL3 L2 L1
317964-41782
N L N L
317965-38886
D0000102544
XD02 Electric emergency/booster heater (DHC)
Connected
load
Cable
cross-sec-
tion
Terminal assignment
2.9 kW 2.5mm² PE N L
5.9 kW 2.5mm² PE N L
2.5mm² PE N L
 Connect the electrical emergency/booster heater cables to
deliver the required rating as detailed in the table.
Control voltage
!
Material losses
 Only connect energy efficient circulation pumps ap-
proved by us to the pump connections.
XD01.2 Heat pump enable signal
EVU Enable signal, bus cable to the WPM screened with
strain relief in terminal.
Heat pump manager terminal assignment
WARNING Electrocution
Only components that operate with safety extra low
voltage (SELV) and that ensure secure separation from
the mains voltage supply may be connected to the low
voltage terminals of the appliance.
Connecting other components can make parts of the ap-
pliance and connected components live.
 Only use components which have been approved by
us.
D0000071841

INSTALLATION
Electrical connection
www.stiebel-eltron.com HSBB 180 Plus (GB)|HSBB 180 S Plus (GB)| 13
Safety extra low voltage
X1.1
CAN A
+
-
L
H
+
-
L
H
CAN (connection for heat pump and WPE heat
pump extension)
X1.2
CAN B
+
-
L
H
+
-
L
H
CAN (connection for FET remote control and
ISG Internet Service Gateway)
X1.3 Signal
Earth
1
2
Outside sensor
X1.4 Signal
Earth
1
2
Buffer sensor (heating circuit sensor 1)
X1.5 Signal
Earth
1
2
Flow sensor
X1.6 Signal
Earth
1
2
Heating circuit sensor 2
X1.7 Signal
Earth
1
2
Heating circuit sensor 3
X1.8 Signal
Earth
1
2
DHW cylinder sensor
X1.9 Signal
Earth
1
2
Source sensor
X1.10 Signal
Earth
1
2
2nd heat generator (2.WE)
X1.11 Signal
Earth
1
2
Cooling flow
X1.12 Signal
Earth
1
2
DHW circulation sensor
X1.13 Signal
Earth
Signal
1
2
3
FE7 remote control/ telephone remote
switch/ heating curve optimisation/ SGReady
X1.14 Constant 12V
Input
GND
+
IN
Analogue input 0-10V
X1.15 Constant 12V
Input
GND
+
IN
Analogue input 0-10V
X1.16 Signal
Earth
1
2
PWM output 1
X1.17 Signal
Earth
1
2
PWM output 2
X1.18
CAN B
+
-
L
H
+
-
L
H
CAN (FES)
X1.19
CAN A
+
-
L
H
+
-
L
H
CAN (connection for heat pump and WPE heat
pump extension)
Mains power supply
X2.1 L
L
N
PE
L
L
N
Power supply
X2.2 L‘ (power supply
utility input)
L* (pumps L)
L‘
L* (pumps L)
L‘ (power supply utility input)
L* (pumps L)
X2.3 L
N
PE
L
N
PE
Heating circuit pump 1
X2.4 L
N
PE
L
N
PE
Heating circuit pump 2
X2.5 L
N
PE
L
N
PE
Heating circuit pump 3
X2.6 L
N
PE
L
N
PE
Buffer charging pump 1
Mains power supply
X2.7 L
N
PE
L
N
PE
Buffer charging pump 2
X2.8 L
N
PE
L
N
PE
DHW charging pump
X2.9 L
N
PE
L
N
PE
Source pump/ defrost
X2.10 L
N
PE
L
N
PE
Fault output
X2.11 L
N
PE
L
N
PE
DHW circulation pump/ 2nd heat
source DHW
X2.12 L
N
PE
L
N
PE
2ndheat source heating
X2.13 L
N
PE
L
N
PE
Cooling
X2.14 Mixer OPEN
N
PE
Mixer CLOSE
5
N
PE
6
Not assigned
X2.15 Mixer OPEN
N
PE
Mixer CLOSE
5
N
PE
6
Not assigned
Note
For every appliance fault, output X2.10 issues a 230V
signal.
In the case of temporary faults, the output switches the
signal through for a specific time.
In the case of faults that result in a permanent appliance
shutdown, the output switches through permanently.
Accessories, STB-FB high limit safety cut-out for underfloor
heating systems (optional)
Netz
XD01.1
2N
234
L1
1L’2
L1
EVU
XD01.2
D0000084472
 Remove the jumper at XD01.1 between L1 and 2.
 Connect the STB-FB high limit safety cut-out to XD01.1 be-
tween L1 and 2.

INSTALLATION
Commissioning
14 | HSBB 180 Plus (GB)|HSBB 180 S Plus (GB) www.stiebel-eltron.com
12.2 Sensor installation
12.2.1 Outside temperature sensor AFPT
The outside temperature sensors have a significant influence on
the function of your heating system. Therefore ensure that the
outside temperature sensors are correctly positioned and well
insulated.
- Install the outside temperature sensor on a north or
north-eastern wall.
- Ensure that the outside temperature sensor is freely exposed
to the elements but not placed in direct sunlight.
- Never mount the outside temperature sensor above win-
dows, doors or air ducts.
- Observe the following minimum clearances: 2.5m above the
ground and 1m to the side of windows and doors
Installation
 Remove the cover.
 Secure the base with the screw supplied.
 Connect the cable.
 Connect the outside temperature sensor to AA01-X1.3.
 Replace the cover. The cover must audibly click into place.
12.3 Remote control
 Please observe the commissioning instructions for the heat
pump manager.
The FET remote control is required to record humidity in the case
of cooling via an area heating system.
13. Commissioning
Our customer support can assist with commissioning, which is a
chargeable service.
If the appliance is intended for commercial use, observe the rules
of the relevant Health & Safety at Work Act during commissioning.
For further details, check with your local authorising body (in
Germany, for example, this is the TÜV).
13.1 Checks before commissioning the heat pump
manager
!
Material losses
Observe the maximum system temperature in underfloor
heating systems.
 Check that the heating system is filled to the correct pressure
and the quick-action air vent valve is closed.
 Check whether the outside temperature sensor is correctly
placed and connected.
 Check whether the power supply is connected correctly.
 Check whether the signal cable to the heat pump (bus cable)
is correctly connected.
High limit safety cut-out
Note
At temperatures below –15°C the high limit safety cut-out
may respond. The appliance may be subjected to these
temperatures during storage or transport.
D0000103267
1
1 High limit safety cut-out reset button
 Check whether the high limit safety cut-out has tripped.
 If the high limit safety cut-out has triggered, reset it with the
reset button.
13.2 Commissioning the heat pump manager
Commission the heat pump manager and make all settings in ac-
cordance with the heat pump manager operating and installation
instructions.
Note
For DHW mode, ensure that the PARALLEL OPERATION
option is set in the heat pump manager. With this setting,
the cylinder charging pump/ heating circuit pump is also
activated in DHW mode.
To set the heat pump manager:
 With the MENU key, call up the main menu.
 Select the menu or value and confirm with OK:
 SETTINGS Value
 DHW
STANDARD SETTING
DHW MODE PARALLEL OPERATION
Note
On appliances with a single phase connection, set the
heat pump manager as follows for calculating the amount
of heat.
To set the heat pump manager:
 With the MENU key, call up the main menu.
 Select the menu or value and confirm with OK:
 SETTINGS Value
 HEATING
ELECTRIC BOOSTER HEATER
NUMBER OF STAGES 2

INSTALLATION
Shutting down the system
www.stiebel-eltron.com HSBB 180 Plus (GB)|HSBB 180 S Plus (GB)| 15
Cooling settings
!
Material losses
Condensation caused by the temperature falling below
the dew point can lead to material losses. The appliance
is therefore approved exclusively for area cooling.
For dew point independent cooling, additional accesso-
ries (CDT 180) are required to ensure that any condensate
is reliably drained away.
 Observe the instructions for the heat pump manager.
Adjusting the heat pump manager settings for area cooling:
 With the MENU key, call up the main menu.
 Select the menu or value and confirm with OK:
 SETTINGS Value
 COOLING
COOLING ON
STANDARD SETTING
COOLING CAPACITY system specific
ACTIVE COOLING
AREA COOLING ON
SET FLOW TEMPERATURE system specific
FLOW TEMP HYSTERESIS system specific
SET ROOM TEMPERATURE system specific
13.3 Appliance handover
 Explain the appliance function to users and familiarise them
with how it works.
 Make users aware of potential dangers.
 Hand over these instructions.
14. Shutting down the system
!
Material losses
Observe the temperature application limits and the min-
imum circulation volume of the heat pump.
!
Material losses
Drain the system when there is a risk of frost and the heat
pump is completely switched off (see chapter “Mainte-
nance/ Draining the DHW cylinder”).
 If you take the system out of use, set the heat pump manager
to standby so that the safety functions that protect the appli-
ance (e.g. frost protection) remain active.
15. Maintenance
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.
WARNING Electrocution
 Before any work on the appliance, disconnect all
poles of the appliance from the power supply.
Draining the DHW cylinder
CAUTION Burns
Hot water may escape during draining.
 Close the shut-off valve in the cold water supply line.
 Open the hot water taps on all draw-off points.
D0000103378
 Drain the DHW cylinder via the right-hand drain & fill valve.
Testing the sacrificial anode
 Arrange for the sacrificial anode to be tested at least every
two years and replace immediately if it becomes depleted.
For this, observe the maximum transition resistance between
the sacrificial anode and the cylinder of 0.3Ω. If it is not
possible to insert the sacrificial anode from above, install a
segmented anode.
The intervals at which subsequent testing should be carried out
depends on the wear of the sacrificial anode.

INSTALLATION
Specication
16 | HSBB 180 Plus (GB)|HSBB 180 S Plus (GB) www.stiebel-eltron.com
16. Specification
16.1 Dimensions and connections
1201
10-20
601
590
9595
130 130 130
d02 e01
d01 e02
c01
c06
c10
b01
1279
1261
915
300
685
c12
1418
c13
D0000103277
HSBB 180 Plus (GB) HSBB 180 S Plus (GB)
b01 Entry electrical cables
c01 Cold water inlet Male thread G 1 G 1
c06 DHW outlet Diameter mm 22 22
c10 DHW circulation Male thread G 1/2 G 1/2
c12 Safety valve drain Diameter mm 22 22
c13 T&P valve
d01 Heat pump flow Diameter mm 22 22
d02 Heat pump return Diameter mm 22 22
e01 Heating flow Diameter mm 22 22
e02 Heating return Diameter mm 22 22

INSTALLATION
Specication
www.stiebel-eltron.com HSBB 180 Plus (GB)|HSBB 180 S Plus (GB)| 17
Other dimensions and connections
h16
i18
d47
d47
D0000103278
HSBB 180
Plus (GB)
HSBB 180
S Plus (GB)
h16 Sensor DHW Diameter mm 9.5 9.5
i18 Sacrificial anode Female thread G 1 1/4 G 1 1/4
Torque Nm 120 120
d47 Drain & fill valve
16.2 Hydraulic diagram
< 600
> 300
D0000040507
3 2 1
9
10
4
15
11
14
13
568
12 11
181716
7
1 Discharge below fixed grate
2 Cold water supply
3 Shut-off valve
4 Line strainer
5 Pressure reducing valve
6 Balanced pressure; cold water outlet
7 Check valve
8 Safety assembly
9 Tundish
10 Metal discharge pipe (D2) from tundish, with continuous fall
11 Equipotential bond
12 Drain valve
13 Cylinder
14 DHW outlet
15 T&P valve
16 Metal discharge pipe (D1) from T&P valve to tundish
17 Expansion vessel
18 Expansion relief valve
!
Material losses
The tundish should be installed away from electrical de-
vices.
Note
If secondary return circuits are used then an additional
expansion vessel may be required.
Data table
Minimum size of discharge pipe D1 mm 15
Minimum size of discharge pipe D2 from tundish mm 22 28 35
Maximum permissible pressure drop, expressed as
a length of straight pipe (i.e. no elbows or bends)
m 9 18 27
Pressure drop of each elbow or bend m 0.8 1.0 1.4
Connection dimensions
Safety assembly connection mm 22
Expansion valve end connection mm 15
Expansion vessel connection, male, BSP G 1 A
Tundish inlet connection mm 22
Tundish outlet connection G 1

INSTALLATION
Specication
18 | HSBB 180 Plus (GB)|HSBB 180 S Plus (GB) www.stiebel-eltron.com
16.3 Wiring diagram
HSBB 180 Plus
X2.2X2.3X2.4X2.5X2.6X2.7
X2.8X2.9X2.10X2.11X2.12X2.13
X2.14
X2.15
X1.1
CAN A
X1.19
CAN A
X1.18
CAN B
X1.17 X1.16 X1.15 X1.14 X1.13 X1.12 X1.2
CAN B
X1.3X1.4X1.5X1.6X1.7X1.8X1.9X1.10X1.11
X2.1
MA15
BP10
BF01
M
1~
M
1~
PWM
GND
3
2
1
1
4
4
p
OUT
+5V
GND
Hz
T2
T1
+5V
OUT
GND
PT 1000
AA07
(MFG)
X71 X72X70X69X68
X67X66
X65X63X62X61X60
KF20KF21KF22
HL
X64
BT02
BT01
BT06
BT20
MA14
ws (PWM)
br (GND)
L
MA10
M
1~
N
L
M
1~
N
4321 4321 321
2
14321
123 4 56
123 4 56
321
121 2 3 4 51 2 3 4 5
12
12
12
X27
AA06
4321
4321
4
3
2
1
1 = H
2 = L
3 =
4 = +12V
+
-
L
H
+
-
L
H
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
3
+
IN
T
+
IN
T
1
2
1
2
+
-
L
H
+
-
L
H
L
L
N
PE
L‘
L*
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
N
PE


N
PE


T
+
AA01 (WPM)
XE01
XD02
L3 L2 L1
134
12 22 32
11 3121
BT55
<T
AA07
KF20
KF21
KF22
1
3
3
13
1
EB01
MFG
X59
1
2N 3
25
N
XE02
WH
BN
GN
YE
WH
BN
GN
YE
GNBNYEWH
BNBUGNYE
BNBUGNYE
XE05
XD01.1
2N
234
L1
1
L’
2
L
1
XD01.2
XE06
BT08
AB01 (CDT 180)
2 3 4 5 61
FC07
MA13
L1 2 K1 K2N
L L L N
BK WH GNYE VT VT
M
1~
XD13
BU
GNYE
BU
GNYE
BK
BK
AA01 Extra low voltage (WPM4 heat pump manager)
AA06 Programming unit
AA07 PCB, booster heater MFG
EB01 Booster heater MFG
BF01 Flow rate and temperature, heating circuit
BP10 Heating circuit pressure sensor
BT01 Temperature sensor, heat pump flow
BT02 Temperature sensor, heat pump return
BT06 Temperature sensor HP buffer cylinder (not assigned)
BT08 Temperature sensor HP cooling (not assigned)
BT20 Temperature sensor, DHW cylinder
BT55 High limit safety cut-out MFG (manual reset)
FC07 Condensate pump fuse
MA10 Motor, pump, heating circuit (not assigned)
MA13 Condensate pump motor
MA14 Motor, buffer charging pump (PWM/1-10V)
MA15 Motor, diverter valve, heating/DHW
KF20 Relay, booster heater MFG
KF21 Relay, booster heater MFG
KF22 Relay, booster heater MFG
XD01.1 Terminal, power supply
XD01.2 Terminal, power-OFF contact
XD02 Terminal, MFG power supply
XD13 Terminal, condensate pump
XE01 Power supply earth terminal
XE02 Earth terminal MFG/DHC
XE05 Earth stud, front panel
XE06 Earth, front panel
AA01-X1.1 Connector, CAN A (heat pump connection)
AA01-X1.2 Connector, CAN B (FET/ISG connection)

INSTALLATION
Specication
www.stiebel-eltron.com HSBB 180 Plus (GB)|HSBB 180 S Plus (GB)| 19
D0000089904
X2.2X2.3X2.4X2.5X2.6X2.7
X2.8X2.9X2.10X2.11X2.12X2.13
X2.14
X2.15
X1.1
CAN A
X1.19
CAN A
X1.18
CAN B
X1.17 X1.16 X1.15 X1.14 X1.13 X1.12 X1.2
CAN B
X1.3X1.4X1.5X1.6X1.7X1.8X1.9X1.10X1.11
X2.1
MA15
BP10
BF01
M
1~
M
1~
PWM
GND
3
2
1
1
4
4
p
OUT
+5V
GND
Hz
T2
T1
+5V
OUT
GND
PT 1000
AA07
(MFG)
X71 X72X70X69X68
X67X66
X65X63X62X61X60
KF20KF21KF22
HL
X64
BT02
BT01
BT06
BT20
MA14
ws (PWM)
br (GND)
L
MA10
M
1~
N
L
M
1~
N
4321 4321 321
2
14321
123 4 56
123 4 56
321
121 2 3 4 51 2 3 4 5
12
12
12
X27
AA06
4321
4321
4
3
2
1
1 = H
2 = L
3 =
4 = +12V
+
-
L
H
+
-
L
H
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
3
+
IN
T
+
IN
T
1
2
1
2
+
-
L
H
+
-
L
H
L
L
N
PE
L‘
L*
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
N
PE


N
PE


T
+
AA01 (WPM)
XE01
XD02
L3 L2 L1
134
12 22 32
11 3121
BT55
<T
AA07
KF20
KF21
KF22
1
3
3
13
1
EB01
MFG
X59
1
2N 3
25
N
XE02
WH
BN
GN
YE
WH
BN
GN
YE
GNBNYEWH
BNBUGNYE
BNBUGNYE
XE05
XD01.1
2N
234
L1
1
L’
2
L
1
XD01.2
XE06
BT08
AB01 (CDT 180)
2 3 4 5 61
FC07
MA13
L1 2 K1 K2N
L L L N
BK WH GNYE VT VT
M
1~
XD13
BU
GNYE
BU
GNYE
BK
BK
AA01-X1.3 Connector, outside temperature sensor
AA01-X1.4 Connector, buffer temperature sensor BT06 (not assigned)
AA01-X1.5 Connector, flow temperature sensor
AA01-X1.6 Connector, heating circuit temperature sensor 2
AA01-X1.7 Connector, heating circuit temperature sensor 3
AA01-X1.8 Connector, DHW cylinder sensor BT20
AA01-X1.9 Connector, source sensor
AA01-X1.10 Connector, 2nd heat generator
AA01-X1.11 Connector, flow, cooling (not assigned)
AA01-X1.12 Connector, DHW circulation sensor
AA01-X1.13 Connector, remote control FE7
AA01-X1.14 Connector, analogue input 0-10V
AA01-X2.14 Connector, mixer, heating circuit 2 (X2.14.1 Mixer OPEN/X2.14.2
Mixer CLOSE)
AA01-X2.15 Connector, mixer, heating circuit 3
(X2.15.1 Mixer OPEN/X2.15.2 Mixer CLOSE)
AA06-X27 Terminal, programming unit
AA07-X60 Connector, temperature sensor, heat pump flow BT01
AA07-X61 Connector, temperature sensor, heat pump return BT02
AA07-X62 Not assigned – connector, temperature sensor, heat pump return
AA07-X63 Not assigned – connector, temperature sensor, DHW cylinder,
internal
AA07-X64 Connector, temperature and flow rate, heating circuit, BF01
AA07-X65 Not assigned
AA07-X66 Rast 2.5 connector (heating system pressure) BP01
AA07-X67 Not assigned
AA07-X68 Connector, switching, motor, diverter valve central heating /
DHW
AA07-X69 Not assigned
AA07-X70 Connector, switching, pump, heating circuit PWM/1-10V
AA07-X71 Not assigned
AA07-X72 Connector, CAN bus
EB01-X59 Terminal, MFG

INSTALLATION
Specication
20 | HSBB 180 Plus (GB)|HSBB 180 S Plus (GB) www.stiebel-eltron.com
HSBB180S Plus
XD02
L N L
134
12 22 32
11 3121
BT55
<T
AA07
KF22
KF21
KF20
1
3
3
13
1
EB01
MFG
X59
L
LN N
25
N
XE02
X2.2X2.3X2.4X2.5X2.6X2.7
X2.8X2.9X2.10X2.11X2.12X2.13
X2.14
X2.15
X1.1
CAN A
X1.19
CAN A
X1.18
CAN B
X1.17 X1.16 X1.15 X1.14 X1.13 X1.12 X1.2
CAN B
X1.3X1.4X1.5X1.6X1.7X1.8X1.9X1.10X1.11
X2.1
MA15
BP10
BF01
M
1~
M
1~
PWM
GND
3
2
1
1
4
4
p
OUT
+5V
GND
Hz
T2
T1
+5V
OUT
GND
PT 1000
AA07 (MFG)
X71 X72X70X69X68
X67X66
X65X63X62X61X60
KF20KF21KF22
HL
X64
BT02
BT01
BT06
BT20
MA14
ws (PWM)
br (GND)
L
MA10
M
1~
N
L
M
1~
N
4321 4321 321
2
14321
123 4 56
123 4 56
321
121 2 3 4 51 2 3 4 5
12
12
12
X27
AA06
4321
1 = H
2 = L
3 =
4 = +12V
+
-
L
H
+
-
L
H
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
3
+
IN
T
+
IN
T
1
2
1
2
+
-
L
H
+
-
L
H
L
L
N
PE
L‘
L*
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
L
N
PE
N
PE


N
PE


T
+
AA01 (WPM)
AB01 (CDT 180) XE01
WH
BN
GN
YE
GNBNYEWH
BNBUGNYE
BNBUGNYE
XE05 XE06
XD01.1
2N
234
L1
1
L’
2
L
1
2 3 4 5 61
XD01.2
FC07
MA13
L1 2 K1 K2N
L L L N
M
1~
BT08
XD13
4321
4
3
2
1
WH
BN
GN
YE
BK WH GNYE VT VT
BU
GNYE
BU
GNYE
BK
BK
AA01 Extra low voltage (WPM4 heat pump manager)
AA06 Programming unit
AA07 PCB, booster heater MFG
EB01 Booster heater MFG
BF01 Flow rate and temperature, heating circuit
BP10 Heating circuit pressure sensor
BT01 Temperature sensor, heat pump flow
BT02 Temperature sensor, heat pump return
BT06 Temperature sensor HP buffer cylinder (not assigned)
BT08 Temperature sensor HP cooling (not assigned)
BT20 Temperature sensor, DHW cylinder
BT55 High limit safety cut-out MFG (manual reset)
FC07 Condensate pump fuse
MA10 Motor, pump, heating circuit (not assigned)
MA13 Condensate pump motor
MA14 Motor, buffer charging pump (PWM/1-10V)
MA15 Motor, diverter valve, heating/DHW
KF20 Relay, booster heater MFG
KF21 Relay, booster heater MFG
KF22 Relay, booster heater MFG
XD01.1 Terminal, power supply
XD01.2 Terminal, power-OFF contact
XD02 Terminal, MFG power supply
XD13 Terminal, condensate pump
XE01 Power supply earth terminal
XE02 Earth terminal MFG/DHC
XE05 Earth stud, front panel
XE06 Earth, front panel
AA01-X1.1 Connector, CAN A (heat pump connection)
AA01-X1.2 Connector, CAN B (FET/ISG connection)