STIEBEL ELTRON HSBC 300 Integral Specification sheet

OPERATION AND INSTALLATION
Integral tank
»HSBC300Integral

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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__________________________________________________ 11
10.1 Positioning the appliance _____________________________________ 11
10.2 Heating water connection_____________________________________ 11
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 __________________________________________________ 16
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 Data table ________________________________________________________ 29
17.6 Accessories_______________________________________________________ 30

SPECIAL INFORMATION
General information
ENGLISH
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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 tank
- Drain the appliance as described in chapter
"Installation/ Maintenance/ Draining the
DHW tank".
- Observe the maximum permissible pressure
(see chapter "Installation/ Specification/ Data
table").
- The DHW tank 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 inches (mm) unless stated
otherwise.
2. Safety
2.1 Intended use
This appliance is intended to be used for seasonal heating and
cooling of interiors 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 109 °F (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 tank is under supply pressure. During the heat-
up process, expansion water will drip from the safety
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:
- WPL 15 A2W Premium
- WPL 25 A2W Premium
4. Appliance description
The buffer tank and DHW tank with indirect coil are arranged one
above the other and can be separated for easier handling.
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 & cooling) and rear
(DHW).
In addition to the DHW tank and the buffer tank, further system
components are integrated:
- Heat pump manager
- Highly efficient circulation pump for a heating circuit without
a mixer
- 3/2-way diverter valve
- Primary tank pump
DHW tank
The tank is steel and coated on the inside with a special direct
enamel and is equipped with a signal anode. The anode with
consumption indicator protects the tank interior from corrosion.
The heating water heated by the heat pump is pumped through
an indirect coil inside the DHW tank. The heat channeled through
the indirect coil is then transferred to the domestic hot water. The
integral heat pump manager (WPM) regulates the DHW heating to
the required temperature.
Buffer tank
This steel tank 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 tank by the tank
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.
fPlease observe the instructions for the heat pump manager.
5. Cleaning, care and maintenance
fHave the electrical safety of the appliance and the function
of the safety assembly regularly checked by a qualified
contractor.
fNever 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 color 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 Solution
The water does not heat
up. The heating does not
work.
There is no power. Check to ensure circuit
breaker in breaker panel
hasn’t tripped. Reset if
necessary.
If you cannot solve the problem, contact your qualified contractor.
To facilitate and speed up your inquiry, 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
Integral
- Pipe assembly RBS-SBC Integral
- Pressure hoses
- Temperature sensor for cooling
- FET remote control for heating & cooling operation
- STB-FB high limit safety cut-out for underfloor heating
systems
Pipe assembly RBS-SBC
The domestic water hydraulic connections can be routed upwards
at the rear of the DHW tank using the RBS-SBC Integral pipe as-
sembly 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 vapors.
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
9ǬÝ

9ǬÝ

òÝ
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ôÝ

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

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


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
D0000103389
The minimum side clearances can be swapped between left and
right.

INSTALLATION
Preparation
ENGLISH
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9.2 Transport and handling
!
Material losses
Store and transport the appliance at temperatures be-
tween -4 °F and 140 °F (-20°C and 60°C).
Handling
f Undo the 4screws from the 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
234
1 Insulation segment1
2 Insulation segment2
3 Insulation material screw
4 Insulation segment3
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.
fTo 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
labeled recessed grips on the left and right.
D0000103405
fRemove insulation segment1.
fRemove insulation segment2.
D0000080287
fPull the "heating sensor" out of the buffer tank.
D0000080288
fRelease the sensor lead from the guide groove in the insula-
tion segment.

INSTALLATION
Preparation
ENGLISH
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D0000080289
fDisconnect the push-fit connectors of the 4hydraulic con-
nections. To do this, pull the spring clips fully out with a
screwdriver.
fPull the hydraulic connectors as indicated.
D0000080293
fRemove the 4hydraulic hoses.
fRemove the 2insulation material screws.
fRemove insulation segment3.
D0000103411
fUndo the 2 locking screws on the side profile strips.
fLift up and unhook the side profile strips.
D0000080343
fRelease the 4screws on the tabs at the front of the appliance.
D0000074613
fPull the upper section of the appliance towards the front.
D0000080345
1
1Handle
fTip the upper section of the appliance backwards. Use the
handle for improved grip.

INSTALLATION
Preparation
10 | HSBC 300 Integral www.stiebel-eltron-usa.com
D0000103412
fPlace the upper section of the appliance on a base to prevent
damage.
Joining appliance sections
Material losses
To prevent condensation forming, the insulation seg-
ments must fit closely against the lower section with no
gaps.
fWhen inserting the insulation segments, ensure that
the joint grooves are kept clear.
fTap 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
1Handle
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)
fPlace the upper appliance section onto the lower appliance
section along the dotted line.
D0000074614
fSlide 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.
fSecure the tabs on the appliance front.
fFit the side profile strips.
fFit insulation segment 3 and the 4 hydraulic hoses.
fConnect the push-fit connectors of the 4hydraulic connec-
tions. Ensure that the spring clips click into place.
fInsert the "heating sensor" into the buffer tank.
fLay the sensor lead in the guide groove provided for this pur-
pose in the insulation segment.
fFit insulation segment2.
fFit insulation segment1.
fFit the front casing.

INSTALLATION
Installation
ENGLISH
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10. Installation
10.1 Positioning the appliance
fWhen positioning the appliance, observe minimum clearanc-
es (see chapter "Preparations/ Installation site").
fUse 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 accordance
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 tank, on buffer
tanks, steel radiators or steel pipes).
fWith heating systems that are permeable to oxygen, separate
the heating system between the heating circuit and the buf-
fer tank.
!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 stan-
dard value, assume a maximum line length of 12 ft 9 in
(10m) and a pipe diameter of 1 inch.
fThoroughly 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.
fInstall the heating water pipes (see chapter "Specification/
Dimensions and connections").
fProtect the flow and return lines against frost with sufficient
thermal insulation.
fConnect 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.
fWhen sizing the pipes, ensure that the available external
pressure differential is not exceeded (see chapter "Specifica-
tion/ Data table").
fWhen 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 Integral (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 tank.
To extend the appliance with a heating circuit with mixer, you
can install pump assembly HSBC 3-HKM Integral (available as an
accessory).
Standard delivery
D0000080357
1
2
3
4
5
6
789
3
3
3
3
3
3
3
3
3
3
3
3
3
1 Pipe insulation
2 Connection pipes (*)
3 Temperature sensor
4 Heating circuit pump (*)
5 3-way mixer (*)
6 Insulation mat for 3-way mixer

INSTALLATION
Installation
12 | HSBC 300 Integral www.stiebel-eltron-usa.com
7 Flat gaskets
8 Servomotor for 3-way mixer (*)
9 Insulation mat for 3-way mixer and heating circuit pump
(*)Pipe assembly
Preparation
fRemove the front casing and insulation segment1 (see chap-
ter "Installation/ Preparations/ Transport and handling").
The following components are pre-fitted on the HSBC side at the
pump assembly installation site:
D0000101960
1
2
3
4
3
3
3
3
3
3
3
3
3
3
3
3
1 Insulation plugs
2 Profiles for 3-way mixer
3 Insulation mat, closed
4 Adapter with dummy cap screwed on
fRemove the insulation plugs.
fRemove the closed insulation mat and profiles for the 3-way
mixer and the heating circuit pump.
fCounterhold and unscrew the dummy caps from the
adapters.
Installation
0.75-1.5 ftÂlb
(1-2 Nm)
D0000081576
fCheck the position of the 3-way mixer shaft.
fAdjust the position if necessary.
D0000103414
1
23
(*)
1
1
1
1
1
1
1
1
1
1
1
(*)Pipe assembly inserted
1 Profiles for 3-way mixer
2 Insulation mat for 3-way mixer
3 Servomotor for 3-way mixer
fInsert the pipe assembly.
fInsert the flat gaskets into the union nuts for the connection
pipes.
fCounterhold and secure the union nuts to the adapters.
fCheck the alignment of the pipes and functional elements of
the pump assembly.
fRe-tighten all fittings.
fInstall the profiles for the 3-way mixer over the mixing valve
body and above the pump.
fPlace the insulation mat for the 3-way mixer on the valve
body.
fInstall 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
ENGLISH
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fRoute the pump assembly connecting cable to the control
panel as shown.
fSlide 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
fInsert the insulation mat on the HKM side for the 3-way
mixer and the heating circuit pump.
fObserve 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
Galvanized 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
fFlush the pipes thoroughly.
fInstall the DHW outlet line and the cold water inlet line (see
chapter "Specification/ Dimensions and connections"). Con-
nect the hydraulic connections with flat gaskets.
fInstall 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.
fSize the drain pipe so that water can drain off unimpeded
when the safety valve is fully opened.
fThe safety valve drain aperture must remain open to
atmosphere.
fInstall the safety valve drain pipe with a constant fall to the
drain.
10.3.2 RBS-SBC Integral (optional)
WARNING Electrocution
Before starting work on the appliance, disconnect all
poles from the power supply and drain the DHW tank.
Note
The following diagrams show pipe assembly RBS-SBC
Integral (see chapter "Specification/ Dimensions and
connections").
 ǩÝPP
D0000080428
fHook the retainer for the connection pipes into the top center
of the appliance.
fUse the retainer as a drilling template and pre-drill the fixing
holes.
fSecure the retainer with the screws.

INSTALLATION
Installation
14 | HSBC 300 Integral www.stiebel-eltron-usa.com
D0000103488
1
2
1Retainer
2 Insulated connection pipes
fInstall the connection pipes in sequence, starting on the left
or right depending on the positioning of the appliance.
fInsert the connection pipes through the retainer from below.
fSecure the connections to the appliance using the union nuts.
fConnect 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").
fRemove the sealing cap from the DHW circulation connection
(see chapter "Specification/ Dimensions and connections").
fConnect 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.
fRecheck 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
fFill the heating system via the drain valve.
fVent the pipework.
10.4.3 DHW tank filling
!Material losses
Some fluxes used to solder pipes and fittings need to be
flushed out with hot water.
fHeat the tank to its normal operating temperature
and flush all pipe work with hot water to ensure all
flux and debris is removed from the system.
fOpen all downstream draw-off valves until the appliance is
full and the pipework is free of air.
fAdjust 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.
fCarry out a tightness check.
fCheck the safety valve.

INSTALLATION
Electrical connection
ENGLISH
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10.5 Venting the appliance
D0000103417
1
2
3
1 Air vent valve
2 Vent hose
3 Hose attachment
fDetach the vent hose from the hose attachment.
fHang the free end of the vent hose in a container.
fTo ventilate, open the air vent valve.
fAfter ventilation, close the air vent valve.
fSecure 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 1/8˝(3mm) contact sepa-
ration. This requirement can be met by using contactors,
circuit breakers, fuses/MCBs, etc.
!Material losses
Provide separate circuit breakers for the two power cir-
cuits 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
fRoute all power cables and sensor leads into the appliance
through the cable entry.
fConnect the power cables and sensor leads as detailed
below.
Install cables with the following cross-sections in accordance with
the respective fuse protection:
Circuit
breaker
Assignment Cable cross-section
15A Control unit 14 AWG (1.5mm²)
11.1 Control voltage
1
1
1
2
2
D0000102039
Terminal Control voltage
XD03.1 Power supply
L1, L2, GND

INSTALLATION
Electrical connection
16 | HSBC 300 Integral www.stiebel-eltron-usa.com
11.2 Safety extra low voltage
BT06
BT13
BT20
1
2
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 tank
AA01-X1.6 BT13 Temperature sensor, heat pump, flow, heating circuit 2
(HSBC 3-HKM Integral accessory)
AA01-X1.8 BT20 DHW tank 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)
Safety extra low voltage
X1.2
CAN B
+
-
L
H
+
-
L
H
CAN (connection for FET remote control and
ISG Internet Service Gateway)
X1.3 Signal
Ground
1
2
Outside sensor
X1.4 Signal
Ground
1
2
Buffer sensor (heating circuit sensor 1)
X1.5 Signal
Ground
1
2
Flow sensor
X1.6 Signal
Ground
1
2
Heating circuit sensor 2
X1.7 Signal
Ground
1
2
Heating circuit sensor 3
X1.8 Signal
Ground
1
2
DHW tank sensor
X1.9 Signal
Ground
1
2
Source sensor
X1.10 Signal
Ground
1
2
2nd heat generator (2.WE)
X1.11 Signal
Ground
1
2
Cooling flow
X1.12 Signal
Ground
1
2
DHW circulation sensor
X1.13 Signal
Ground
Signal
1
2
3
Telephone remote switch/ heating curve opti-
mization/ SGReady
X1.14 Constant 12V
Input
GND
+
IN
Analog input 0-10V
X1.15 Constant 12V
Input
GND
+
IN
Analog input 0-10V
X1.16 Signal
Ground
1
2
PWM output 1
X1.17 Signal
Ground
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 L1
L1
L2
GND
L1
L1
L2
Power supply
X2.2 L1' (power sup-
ply utility input)
L1* (pumps L1)
L1'
L1* (pumps
L1)
L1' (power supply utility input)
L1* (pumps L1)
X2.3 L1
L2
GND
L1
L2
GND
Heating circuit pump 1
X2.4 L1
L2
GND
L1
L2
GND
Heating circuit pump 2
X2.5 L1
L2
GND
L1
L2
GND
Heating circuit pump 3
X2.6 L1
L2
GND
L1
L2
GND
Buffer charging pump 1
X2.7 L1
L2
GND
L1
L2
GND
Buffer charging pump 2

INSTALLATION
Electrical connection
ENGLISH
www.stiebel-eltron-usa.com HSBC 300 Integral | 17
Mains power supply
X2.8 L1
L2
GND
L1
L2
GND
DHW charging pump
X2.9 L1
L2
GND
L1
L2
GND
Source pump/ defrost
X2.10 L1
L2
GND
L1
L2
GND
Fault output
X2.11 L1
L2
GND
L1
L2
GND
DHW circulation pump/ 2nd heat
source DHW
X2.12 L1
L2
GND
L1
L2
GND
2ndheat source heating
X2.13 L1
L2
GND
L1
L2
GND
Cooling
X2.14 Mixer OPEN
L2
GND
Mixer CLOSE

L2
GND

Mixer, heating circuit 2
(X2.14.1 Mixer OPEN
X2.14.2 Mixer CLOSE)
X2.15 Mixer OPEN
L2
GND
Mixer CLOSE

L2
GND

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 Integral (optional)
brown
black
blue
black
blue
green/yellow
3
3
AA01-X2.4
AA01-X1.6
AA01-X2.14
L2
GND
T
S
L1
1
2
L2
GND
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 L1, L2, GND MA11 Motor, pump, heating circuit
AA01-X2.14 L1, L1, L2 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
L1 L1
L2
GND
L1‘ L1*
L1
L2
GND
L1
L2
GND
L1
L2
D0000102047
f X2.1 (L), X2.2 (L*): Remove the jumper.
f X2.1 (L1), X2.2 (L1*): 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".

INSTALLATION
Commissioning
18 | HSBC 300 Integral www.stiebel-eltron-usa.com
D0000090564
fLay the sensor lead in the guide groove provided for this pur-
pose in the insulation segment.
fConnect the temperature sensor to the corresponding ter-
minal on the WPM (see chapter "Electrical connection/ Heat
pump manager terminal assignment").
11.6 Remote control
fWhen installing the remote control unit, observe the commis-
sioning instructions for the heat pump manager (see chapter
"Connecting external components").
12. Commissioning
12.1 Checks before commissioning the heat pump
manager
!Material losses
Observe the maximum system temperature in underfloor
heating systems.
fCheck that the heating system is filled to the correct pressure
and the quick-action air vent valve is closed.
fCheck whether the outside temperature sensor is correctly
placed and connected.
fCheck whether the power supply is connected correctly.
fCheck 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 recognized the heat
pump.
fOpen the menu and enter the code.
Parameter Code
VIEW (SETTINGS) 1 0 0 0
fAdjust 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
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.
fAdjust 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.
fWhen 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
fSet 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
Δp-v, Δp-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

INSTALLATION
Appliance handover
ENGLISH
www.stiebel-eltron-usa.com HSBC 300 Integral | 19
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 6p-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 6p-c
(I, II, III)
Recommended for underfloor heating systems, large
pipework or any application with a non-varying pipe-
work curve (e.g. tank charging pumps), as well as sin-
gle-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
3x Variable differential pressure
Δp-v
III
4x Variable differential pressure
Δp-v
II
5x Variable differential pressure
Δp-v
I
6x Constant differential pressure
Δp-c
III
7x Constant differential pressure
Δp-c
II
8x Constant differential pressure
Δp-c
I
*9x Constant speed III
(*)Pressing the button for the 9thtime in succession returns the
system to the factory setting (constant speed, curveIII).
14. Appliance handover
fExplain the appliance function to users and familiarize them
with how it works.
fMake users aware of potential dangers.
fHand over these instructions.
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

INSTALLATION
Shutting down the system
20 | HSBC 300 Integral www.stiebel-eltron-usa.com
15. Shutting down the system
!
Material losses
Observe the temperature application limits and the min-
imum circulation volume on the heat consumer side (see
chapter "Specification/ Data table").
!
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 tank").
f 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.
16. 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 buffer tank
D0000080425
f Drain the buffer tank via the drain valve.
Draining the DHW tank
CAUTION Burns
Hot water may escape during draining.
f Close the shut-off valve in the cold water supply line.
f Open the hot water taps on all draw-off points.
f Empty the DHW tank via the cold water inlet connection.
Cleaning and descaling the DHW tank
!
Material losses
Never use descaling pumps or descaling agents to clean
the tank.
f Clean the appliance through the inspection flange.
For the torque of the flange screws, see chapter "Specification/
Dimensions and connections".
Replacing the signal anode
f Replace the signal anode if it becomes depleted.