STIEBEL ELTRON HSBC 300 cool Specification sheet

OPERATION AND INSTALLATION
Integral cylinder
» HSBC 300 cool (GB) (WPM)

2| HSBC 300 cool www.stiebel-eltron.com
CONTENTS
SPECIAL INFORMATION
OPERATION
1. General information �����������������������������������������3
1.1 Relevant documents_____________________________________________ 3
1.2 Safety instructions_______________________________________________ 3
1.3 Other symbols in this documentation _______________________ 4
1.4 Information on the appliance _________________________________ 4
1.5 Units of measurement __________________________________________ 4
2. Safety����������������������������������������������������������4
2.1 Intended use______________________________________________________ 4
2.2 General safety instructions ____________________________________ 4
2.3 Test symbols ______________________________________________________ 4
3. Appliance compatibility �������������������������������������5
4. Appliance description ���������������������������������������5
5. Cleaning, care and maintenance ���������������������������5
6. Troubleshooting ����������������������������������������������5
INSTALLATION
7. Safety����������������������������������������������������������6
7.1 General safety instructions ____________________________________ 6
7.2 Instructions, standards and regulations ____________________ 6
8. Appliance description ���������������������������������������6
8.1 Standard delivery________________________________________________ 6
8.2 Accessories________________________________________________________ 6
9. Preparation ���������������������������������������������������6
9.1 Installation site___________________________________________________ 6
9.2 Transport and handling ________________________________________ 7
10. Installation�������������������������������������������������� 12
10.1 Positioning the appliance _____________________________________ 12
10.2 Heating water connection_____________________________________ 12
10.3 DHW connection and safety assembly______________________ 14
10.4 Filling the system_______________________________________________ 15
10.5 Venting the appliance__________________________________________ 16
11. Electrical connection��������������������������������������� 16
11.1 Control voltage __________________________________________________ 17
11.2 Safety extra low voltage_______________________________________ 17
11.3 Heat pump manager terminal assignment ________________ 17
11.4 Accessories_______________________________________________________ 18
11.5 Sensor installation______________________________________________ 19
11.6 Remote control__________________________________________________ 19
12. Commissioning ��������������������������������������������� 19
12.1 Checks before commissioning the heat pump manager 19
12.2 Commissioning the heat pump manager __________________ 19
13. Settings ����������������������������������������������������� 20
13.1 Wilo-Para .../Sc circulation pumps__________________________ 20
14. Appliance handover���������������������������������������� 21
15. Shutting down the system �������������������������������� 21
16. Maintenance ������������������������������������������������ 21
17. Specification ������������������������������������������������ 22
17.1 Dimensions and connections_________________________________ 22
17.2 Hydraulic diagram______________________________________________ 24
17.3 Wiring diagram _________________________________________________ 26
17.4 Sample installation_____________________________________________ 29
17.5 Energy consumption data_____________________________________ 29
17.6 Data table ________________________________________________________ 29
17.7 Accessories_______________________________________________________ 30
GUARANTEE
ENVIRONMENT AND RECYCLING

SPECIAL INFORMATION
General information
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SPECIAL INFORMATION
- The appliance may be used by children over 8
years of age and persons with reduced physi-
cal, 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 supply by an isolator that discon-
nects all poles with at least 3mm contact
separation.
- Observe all applicable national and regional
regulations and instructions.
- Observe minimum distances (see chapter "In-
stallation/ Preparations/ Installation site").
- Only a qualified contractor should carry out
installation, commissioning, maintenance and
repair 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.
During the heat-up process, expansion water
will drip from the safety valve.
- The safety valve drain aperture must remain
open to atmosphere.
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
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.
f 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.

OPERATION
Safety
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1.3 Other symbols in this documentation
Note
General information is identified by the adjacent symbol.
f Read these texts carefully.
Symbol Meaning
Material losses
(appliance damage, consequential losses and environmen-
tal pollution)
Appliance disposal
f This symbol indicates that you have to do something. The ac-
tion you need to take is described step by step.
1.4 Information on the appliance
Connections
Symbol Meaning
Inlet/ intake Red arrow: hot
Blue arrow: Cold
Green arrow: Neutral
Drain/ outlet Red arrow: hot
Blue arrow: Cold
Green arrow: Neutral
Domestic hot water
DHW circulation
Heat pump
Heating
1.5 Units of measurement
Note
All measurements are given in mm unless stated oth-
erwise.
2. Safety
2.1 Intended use
This appliance is intended to be used for seasonal heating and
cooling of interiors (7°C/ 12°C) and for DHW heating.
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.
!
Material losses
The system's active frost protection is not guaranteed if
the power supply is interrupted.
f Never interrupt the power supply even outside the
heating season.
Note
The DHW cylinder is under supply pressure. During the
heat-up process, expansion water will drip from the safe-
ty valve.
f 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.

OPERATION
Appliance compatibility
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3. Appliance compatibility
The appliance can be operated in conjunction with the following
air source heat pumps:
- HPA-O 05.1-07.1 CS Premium
- HPA-O 7-13 (C)(S) Premium
- WPL-A 05-07 HK 230 Premium
- WPL 15-25 A(C)(S)
- WPL 19-24 I, A
4. Appliance description
The buffer cylinder and DHW cylinder with indirect coil are ar-
ranged one above the other and can be separated for easier han-
dling.
The appliance has a plastic jacket with foam insulation and is
equipped with a removable front casing. The appliance is connect-
ed hydraulically and electrically to the heat pump. All hydraulic
connections are made at the top (heating) and rear (DHW).
In addition to the DHW cylinder and the buffer cylinder, further
system components are integrated:
- Heat pump manager
- Highly efficient circulation pump for a heating circuit without
mixer
- 3/2-way diverter valve
- Cylinder primary pump
DHW cylinder
The steel cylinder is coated on the inside with special direct enam-
el and is equipped with a signal anode. The anode with consump-
tion indicator 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.
Buffer cylinder
The steel cylinder provides hydraulic separation between the flow
rates of heat pump and heating circuit. The heating water heated
by the heat pump is transferred into the buffer cylinder by the
cylinder charging pump. When a demand is issued, the integral
heating circuit pump delivers the heating water to the heating
circuit.
Heat pump manager (WPM)
The system is controlled by means of the integral heat pump man-
ager.
Note
The heat pump manager has an automatic summer/win-
ter changeover so you can leave the system switched on
in summer.
f Please observe the instructions for the heat pump manager.
5. Cleaning, care and maintenance
f Have the electrical safety of the appliance and the function
of the safety assembly regularly checked by a qualified
contractor.
f Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the unit.
Signal anode with consumption indicator
!
Material losses
If the consumption indicator changes colour from white
to red, have the signal anode checked by a qualified con-
tractor and if necessary replaced.
D0000103388
12
1 White = Anode OK
2 Red = Requires checking by qualified contractor
6. 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.
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
D0000102540

INSTALLATION
Safety
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INSTALLATION
7. Safety
Only a qualified contractor should carry out installation, commis-
sioning, maintenance and repair of the appliance.
7.1 General safety instructions
We guarantee trouble-free function and operational reliability
only if original accessories and spare parts intended for the unit
are used.
7.2 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations
and instructions.
8. Appliance description
8.1 Standard delivery
The following are delivered with the appliance:
- 4x Adjustable foot
- 1x Outside temperature sensor AF PT
- 1x expansion vessel (incl. fastening material)
- 1x installation kit (pressure reducing valve, check
valves, expansion relief valve, tundish)
8.2 Accessories
8.2.1 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
8.2.2 Additional accessories
- Pump assembly for a heating circuit with mixer HSBC3-HKM
- Pipe assembly RBS-SBC
- Pressure hoses
- Water softening fitting HZEA
- Temperature sensor for cooling
- Remote control for heating operation
- STB-FB high limit safety cut-out for underfloor heating
systems
Pipe assembly RBS-SBC
The hydraulic connections can be routed upwards at the rear of
the DHW cylinder using the RBS-SBC pipe assembly available as
an accessory.
9. Preparation
9.1 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
≥250 ≥250
≥800
≥100
≥500
≥100
≥500
D0000103389
The minimum side clearances can be swapped between left and
right.

INSTALLATION
Preparation
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9.2 Transport and handling
!
Material losses
Store and transport the appliance at temperatures be-
tween -20°C and +60°C.
Handling
f Undo the 4screws from the non-returnable pallet.
D0000055519
f Tilt the appliance and screw the 4adjustable feet into the
appliance.
f Lift the appliance off the pallet. For a better hold during
transport, use the recessed grips on the underside and rear
of the appliance.
If narrow doors or hallways hinder handling, you can separate
the upper and lower sections of the appliance as described in the
following chapters.
9.2.1 Removing/fitting the front casing
Removing the front casing
D0000103402
f Remove the 2locking screws on the top of the front casing.
f Unhook the front casing towards the top.
f AA01-X1.18: If required, disconnect the connector plug of the
programming unit from the connection in the appliance. The
functionality of the appliance will not be affected. However,
it will not be possible to operate the appliance via the pro-
gramming unit.
f Remove the earth cable from the front casing.
Fitting the front casing
f Fit the front casing in reverse order.

INSTALLATION
Preparation
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9.2.2 Overview of insulation segments
D0000103403
1
2 3 4
1 Insulation segment1
2 Insulation segment2
3 Insulation material screw
4 Insulation segment3

INSTALLATION
Preparation
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9.2.3 Separating/ joining the appliance sections
Separating the appliance sections
Material losses
Unscrewing the fastening screws destroys the threads in
the insulation segment.
f To open the 3 fixing tabs, loosen the fastening
screws slightly but do not unscrew them completely.
D0000103404
Note
To make removal simpler, the insulation segments have
labelled recessed grips on the left and right.
D0000103405
f Remove insulation segment1.
f Remove insulation segment2.
D0000080287
f Pull the "heating sensor" out of the buffer cylinder.
D0000080288
f Release the sensor lead from the guide groove in the insula-
tion segment.
D0000080289
f Disconnect the push-fit connectors of the 4hydraulic con-
nections. To do this, pull the spring clips fully out with a
screwdriver.
f Pull the hydraulic connectors as indicated.

INSTALLATION
Preparation
10 | HSBC 300 cool www.stiebel-eltron.com
D0000080293
f Remove the 4hydraulic hoses.
f Remove the 2insulation material screws.
f Remove insulation segment3.
D0000103411
f Undo the 2 locking screws on the side profile strips.
f Lift up and unhook the side profile strips.
D0000080343
f Release the 4screws on the tabs at the front of the appliance.
D0000074613
f Pull the upper section of the appliance towards the front.
D0000080345
1
1 Handle
f Tip the upper section of the appliance backwards. Use the
handle for improved grip.
D0000103412
f Place the upper section of the appliance on a base to prevent
damage.

INSTALLATION
Preparation
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Joining appliance sections
Material losses
To prevent condensation forming, the insulation seg-
ments must fit closely against the lower section with no
gaps.
f When inserting the insulation segments, ensure that
the joint grooves are kept clear.
f Tap the insulation segments down with your hand.
Rejoin the appliance sections in reverse order.
The positioning aids and the dotted line marking provide assis-
tance when positioning and inserting the upper appliance section
into the guide groove on the lower section:
D0000080346
1
5
4
3
2
1 Handle
2 Guide pin
3 Dotted line (perforation in the panel)
4 Guide groove
5 Positioning aid
D0000057300
1
1 Dotted line (perforation in the panel)
f Place the upper appliance section onto the lower appliance
section along the dotted line.
D0000074614
f Slide the upper appliance section to the back until it is flush
with the lower appliance section. If the appliance sections
are joined correctly, the final position is determined by the
guide groove and guide pin.
f Secure the tabs on the appliance front.
f Fit the side profile strips.
f Fit insulation segment 3 and the 4 hydraulic hoses.
f Connect the push-fit connectors of the 4hydraulic connec-
tions. Ensure that the spring clips click into place.
f Insert the "heating sensor" into the buffer cylinder.
f Lay the sensor lead in the guide groove provided for this pur-
pose in the insulation segment.
f Fit insulation segment2.
f Fit insulation segment1.
f Fit the front casing.

INSTALLATION
Installation
12 | HSBC 300 cool www.stiebel-eltron.com
10. Installation
10.1 Positioning the appliance
f When positioning the appliance, observe minimum clearanc-
es (see chapter "Preparations/ Installation site").
f Use the adjustable feet to compensate for any unevenness in
the floor.
10.2 Heating water connection
!
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.
Oxygen diffusion
!
Material losses
Do not use open vented heating systems. Use oxygen
diffusion-proof pipes in underfloor heating systems with
plastic pipework.
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).
f With heating systems that are permeable to oxygen, separate
the heating system between the heating circuit and the buff-
er cylinder.
!
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
Note
The maximum permissible line length between the ap-
pliance and the heat pump will vary, depending on the
version of the heating system (pressure drop). As a stand-
ard value, assume a maximum line length of 10m and a
pipe diameter of 22-28mm.
f Thoroughly flush the pipes before connecting the heat pump.
Foreign bodies (e.g. welding pearls, rust, sand, sealing
material, etc.) can impair the operational reliability of the
system.
f Install the heating water pipes (see chapter "Specification/
Dimensions and connections").
f Protect the flow and return lines against frost with sufficient
thermal insulation.
f Connect the hydraulic connections with flat gaskets.
If the available external pressure difference is exceeded, the pres-
sure drop in the heating system could result in a reduced heating
output.
f When sizing the pipes, ensure that the available external
pressure differential is not exceeded (see chapter "Specifica-
tion/ Data table").
f 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.
10.2.1 HSBC3-HKM (optional)
WARNING Electrocution
Before starting work on the appliance, disconnect all
poles from the power supply and drain the heating circuit
via the drain valve on the buffer cylinder.
To extend the appliance with a heating circuit with mixer, you can
install pump assembly HSBC 3-HKM (available as an accessory).
Standard delivery
D0000080357
1
2
3
4
5
6
789
1 Pipe insulation
2 Connection pipes (*)
3 Temperature sensor
4 Heating circuit pump (*)
5 3-way mixer (*)
6 Insulation mat for 3-way mixer
7 Flat gaskets
8 Servomotor for 3-way mixer (*)
9 Insulation mat for 3-way mixer and heating circuit pump
(*)Pipe assembly

INSTALLATION
Installation
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Preparation
f Remove the front casing and insulation segment1 (see chap-
ter "Installation/ Preparations/ Transport and handling").
The following components are prefitted on the HSBC side at the
pump assembly installation site:
D0000101960
1
2
3
4
1 Insulation plugs
2 Profiles for 3-way mixer
3 Insulation mat, closed
4 Adaptor with dummy cap screwed on
f Remove the insulation plugs.
f Remove the closed insulation mat and profiles for the 3-way
mixer and the heating circuit pump.
f Counterhold and unscrew the dummy caps from the
adaptors.
Installation
1-2 Nm
D0000081576
f Check the position of the 3-way mixer shaft.
f Adjust the position if necessary.
D0000103414
1
23
(*)
(*)Pipe assembly inserted
1 Profiles for 3-way mixer
2 Insulation mat for 3-way mixer
3 Servomotor for 3-way mixer
f Insert the pipe assembly.
f Insert the flat gaskets into the union nuts for the connection
pipes.
f Counterhold and secure the union nuts to the adaptors.
f Check the alignment of the pipes and functional elements of
the pump assembly.
f Retighten all fittings.
f Install the profiles for the 3-way mixer over the mixing valve
body and above the pump.
f Place the insulation mat for the 3-way mixer on the valve
body.
f Install the servomotor for the 3-way mixer.
D0000102005
!
Material losses
To prevent condensation from forming, do not lay any
cables in the joint grooves of the EPP parts.

INSTALLATION
Installation
14 | HSBC 300 cool www.stiebel-eltron.com
f Route the pump assembly connecting cable to the control
panel as shown.
f Slide the pipe insulation over the connection pipe connectors
from above.
D0000103415
1
2
(*)
(*)Pipe assembly inserted
1 Profiles for 3-way mixer
2 Insulation mat for 3-way mixer and heating circuit pump
f Insert the insulation mat on the HKM side for the 3-way
mixer and the heating circuit pump.
f Observe the parameter settings in menu "SETTINGS/ HEAT-
ING/ HEATING CIRCUIT 2" in the enclosed commissioning
instructions for the heat pump manager.
10.3 DHW connection and safety assembly
!
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.
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.
10.3.1 DHW connection and safety assembly
f Flush the pipes thoroughly.
f Install the DHW outlet line and the cold water inlet line (see
chapter "Specification/ Dimensions and connections"). Con-
nect the hydraulic connections with flat gaskets.
f 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.
f Size the drain pipe so that water can drain off unimpeded
when the safety valve is fully opened.
f The safety valve drain aperture must remain open to
atmosphere.
f Install the safety valve drain pipe with a constant fall to the
drain.
10.3.2 RBS-SBC (optional)
WARNING Electrocution
Before starting work on the appliance, disconnect all
poles from the power supply and drain the DHW cylinder.
Note
The following diagrams show pipe assembly RBS-SBC
(see chapter "Specification/ Dimensions and connec-
tions").
Ø=3mm
D0000080428
f Hook the retainer for the connection pipes into the top centre
of the appliance.
f Use the retainer as a drilling template and pre-drill the fixing
holes.
f Secure the retainer with the screws.

INSTALLATION
Installation
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D0000103488
1
2
1 Retainer
2 Insulated connection pipes
f Install the connection pipes in sequence, starting on the left
or right depending on the positioning of the appliance.
f Insert the connection pipes through the retainer from below.
f Secure the connections to the appliance using the union nuts.
f Connect the pipes of the pipe assembly to the domestic pipe-
work system.
10.3.3 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").
f Remove the sealing cap from the DHW circulation connection
(see chapter "Specification/ Dimensions and connections").
f Connect the DHW circulation line.
10.4 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.
f Recheck these limits 8-12weeks after commissioning and
during the annual system service.
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.
!
Material losses
Never switch on the power before filling the system.
10.4.1 Flushing out the hot water system
Before turning on the water supply, open all taps. Allow the sys-
tem to fill and flush out all flux and debris from the installation.
10.4.2 Filling the heating system
D0000080425
f Fill the heating system via the drain valve.
f Vent the pipework.

INSTALLATION
Electrical connection
16 | HSBC 300 cool www.stiebel-eltron.com
10.4.3 DHW cylinder filling
!
Material losses
Some fluxes used to solder pipes and fittings need to be
flushed out with hot water.
f 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.
f Fill the DHW cylinder via the the drain valve in compliance
with the UK Water Supply (Water Fittings) Regulations1999,
Section8G24.
f Open all downstream draw-off valves until the appliance is
full and the pipework is free of air.
f 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.
f Carry out a tightness check.
f Check the safety valve.
10.5 Venting the appliance
D0000103417
1
2
3
1 Air vent valve
2 Vent hose
3 Hose attachment
f Detach the vent hose from the hose attachment.
f Hang the free end of the vent hose in a container.
f To ventilate, open the air vent valve.
f After ventilation, close the air vent valve.
f Secure the vent hose.
11. 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
Observe the type plate. The specified voltage must match
the mains power supply.
Note
Leakage currents of up to 5 mA may occur.
The terminal box of the appliance is located behind the front casing
(see chapter "Preparations/ Transport and handling/ Removing/
fitting the front casing").
D0000103416

INSTALLATION
Electrical connection
www.stiebel-eltron.com HSBC 300 cool | 17
f Route all power cables and sensor leads into the appliance
through the cable entry.
f 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 Control unit 1.5mm²
11.1 Control voltage
D0000102039
Terminal Control voltage
XD03.1 Power supply
L, N, PE
11.2 Safety extra low voltage
BT06
BT13
BT20
D0000102042
Termi-
nal
Safety extra low voltage
AA01-X1.1 Heat pump
AA01-X1.3 Outside sensor
AA01-X1.4 BT06 Temperature sensor, heat pump, buffer cylinder
AA01-X1.6 BT13 Temperature sensor, heat pump, flow, heating circuit 2
(HSBC 3-HKM accessory)
AA01-X1.8 BT20 DHW cylinder temperature sensor
Control by WPM via PWM signal
f Observe the information in the commissioning instructions
for the WPMheat pump manager.
11.3 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.
f Only use components which have been approved by
us.
D0000071841
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

INSTALLATION
Electrical connection
18 | HSBC 300 cool www.stiebel-eltron.com
Safety extra low voltage
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
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
Mixer, heating circuit 2
(X2.14.1 Mixer OPEN
X2.14.2 Mixer CLOSE)
X2.15 Mixer OPEN
N
PE
Mixer CLOSE
5
N
PE
6
Mixer heating circuit 3
(X2.15.1 Mixer OPEN
X2.15.2 Mixer CLOSE)
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.
11.4 Accessories
11.4.1 HSBC3-HKM (optional)
br
bk
bu
bk
bu
gnye
3
3
AA01-X2.4
AA01-X1.6
AA01-X2.14
N
PE


L
1
2
N
PE
D0000082613
Terminal Safety extra low voltage
AA01-X1.6 BT13 Temperature sensor, heat pump flow,
heating circuit 2
Terminal Mains power supply
AA01-X2.4 L, N, PE MA11 Motor, pump, heating circuit
AA01-X2.14 L, L, N MA19 Motor, mixing valve heating circuit 2
f Make the electrical connection for the components.
11.4.2 STB-FB high limit safety cut-out for underfloor heating
systems (optional)
X2.2X2.3X2.4X2.5 X2.1
L L
N
PE
L‘ L*
L
N
PE
L
N
PE
L
N
PE
D0000102047
f X2.1 (L), X2.2 (L*): Remove the jumper.

INSTALLATION
Commissioning
www.stiebel-eltron.com HSBC 300 cool | 19
f X2.1 (L), X2.2 (L*): Connect the high limit safety cut-out to the
terminals.
11.5 Sensor installation
11.5.1 AF PT outside temperature sensor
f When installing the outside temperature sensor, observe the
commissioning instructions for the heat pump manager (see
chapter "Connecting external components").
11.5.2 Temperature sensor for area cooling (optional)
Area cooling requires the fitting of a temperature sensor, available
as an accessory.
f Remove the front casing (see chapter "Preparations/ Trans-
port and handling/ Removing/fitting the front casing").
D0000090562
f Insert the temperature sensor into the sensor well "Sensor
heat pump cooling, optional".
D0000090564
f Lay the sensor lead in the guide groove provided for this pur-
pose in the insulation segment.
f Connect the temperature sensor to the corresponding ter-
minal on the WPM (see chapter "Electrical connection/ Heat
pump manager terminal assignment").
11.6 Remote control
f When installing the remote control unit, observe the commis-
sioning instructions for the heat pump manager (see chapter
"Connecting external components").
12. 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).
12.1 Checks before commissioning the heat pump
manager
!
Material losses
Observe the maximum system temperature in underfloor
heating systems.
f Check that the heating system is filled to the correct pressure
and the quick-action air vent valve is closed.
f Check whether the outside temperature sensor is correctly
placed and connected.
f Check whether the power supply is connected correctly.
f Check whether the signal cable to the heat pump (bus cable)
is correctly connected.
12.2 Commissioning the heat pump manager
Commission the heat pump manager and make all settings in
accordance with the heat pump manager commissioning instruc-
tions.
Note
For DHW mode, ensure that the PARALLEL OPERATION
option is set in the heat pump manager. With this setting
the primary pump is also active in DHW mode.
Requirement: The heat pump manager has recognised the heat
pump.
f Open the menu and enter the code.
Parameter Code
VIEW (SETTINGS) 1 0 0 0
f Adjust the parameters.
Parameter Setting
DHW MODE (SETTINGS/ DHW/ STANDARD SETTING) PARALLEL OPER-
ATION
FUNCTION (COMMISSIONING/ I/O CONFIGURATION/
OUTPUT X1.16)
PWM 100%...0%
PUMP (COMMISSIONING/ I/O CONFIGURATION/ OUT-
PUT X1.16)
CHARGING PUMP
CONTROL HEAT-
ING

INSTALLATION
Settings
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Setting for single-phase operation
Note
On appliances with a single phase connection, set the
heat pump manager as follows for calculating the amount
of heat.
f Adjust the parameters.
Parameter Setting
NUMBER OF STAGES (SETTINGS/ HEATING/ ELECTRIC
BOOSTER HEATER)
2
Area cooling setting
!
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.
f When making the area cooling settings, observe the infor-
mation in the commissioning instructions for the heat pump
manager.
13. Settings
13.1 Wilo-Para .../Sc circulation pumps
f Set the operating mode of the pump depending on the heat
distribution system.
LED indicators
Operation indicator:
LED illuminates green in normal operation
LED illuminates/flashes when there is a fault
Display of selected control mode
∆p-v, ∆p-c and constant speed
Display of selected curve (I, II, III) within the control
mode
Combinations of LED displays for venting function, man-
ual re-start and key lock
Operating button
Press
Selecting the control mode
To select the curve (I, II, III) within the control mode
Press and hold
To activate the venting function (press for 3seconds)
Manual restart (press for 5seconds)
To lock/unlock the buttons (press for 8seconds)
Control modes and functions
Variable differential
pressure ∆p-v
(I, II, III)
Recommended for two-pipe heating systems with radi-
ators to reduce flow noise at thermostatic valves
The pump reduces the delivery head by half when the
flow rate in the pipework decreases.
Saves energy by matching the delivery head to the flow
rate demand and the lower flow velocities.
Choice of three pre-defined curves (I, II, III).
Constant pressure
differential ∆p-c
(I, II, III)
Recommended for underfloor heating systems, large
pipework or any application with a non-varying pipe-
work curve (e.g. cylinder charging pumps), as well as
single-pipe heating systems with radiators
The control system keeps the set delivery head con-
stant, irrespective of delivered flow rate.
Choice of three pre-defined curves (I, II, III).
Constant speed (I,
II, III)
Recommended for systems with unchanging system
resistance which require a constant throughput.
The pump runs at three preset fixed speed levels (I, II,
III).
Note
Factory setting: Constant speed,
curve III
Venting
Filling and venting the system correctly
If the pump does not vent automatically:
Activate the venting function via the operating button,
press button for 3seconds, then release it.
Venting function starts (duration 10minutes).
The top and bottom rows of LEDs flash alternately every
second.
To cancel, press the operating button for 3seconds.
Note
After venting, the LED indicator displays
the previously set pump values.
Setting control modes
Selecting the control
mode The LEDs for the control modes and associated curves
illuminate one after the other.
Briefly press the operating button (for approx.1sec-
ond).
LEDs indicate the current selected control mode and
curve (see following table).
Operating
button
LED indicator Control mode Curve
1x Constant speed II
2x Constant speed I
II
III
I
H/m
Q/m³/h
III
I
II
H/m
Q/m³/h
I
III
II
H/m
Q/m³/h
sec3
min10