alphainnoTec WZS Series User manual

We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
HEAT PUMPS
Operating Manual
Brine heat station
BR INE/ WATER
UK
WZS...H/SX – Series

2We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
Please read rst
This operating manual provides important information
on the handling of the unit. It is an integral part of the
product and must be stored so that it is accessible in the
immediate vicinity of the unit. It must remain available
throughout the entire service life of the unit. It must be
handed over to subsequent owners or users of the unit.
Read the operating manual before working on or
operating the unit. This applies in particular to the
chapter on safety. Always follow all instructions
completely and without restrictions.
It is possible that this operating manual may contain
instructions that seem incomprehensible or unclear. In
the event of any questions or if any details are unclear,
contact the factory customer service department or the
manufacturer’s local partner.
Since this operating manual was written for several
different models of the unit, always comply with the
parameters for the respective model.
This operating manual is intended only for persons
assigned to work on or operate the unit. Treat all
constituent parts condentially. The information
contained herein is protected by copyright. No part of
this manual may be reproduced, transmitted, copied,
stored in electronic data systems or translated into
another language, either wholly or in part, without the
express written permission of the manufacturer.
Symbols
The following symbols are used in the operating manual.
They have the following meaning:
Information for operators.
Information or instructions for qualied
technicians.
DANGER!
Indicates a direct impending danger
resulting in severe injuries or death.
WARNING!
Indicates a potentially dangerous situation
that could result in serious injuries or
death.
CAUTION!
Indicates a potentially dangerous situation
that could result in medium or slight
injuries.
CAUTION!
Indicates a potentially dangerous situation,
which could result in property damage.
NOTE.
Emphasised information.
€ENERGY SAVING TIP
Indicates suggestions that help to save
energy, raw materials and costs.
Reference to other sections of the operating
manual.
Reference to other instructions of the
manufacturer.

3
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UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
Inhaltsverzeichnis
INFORMATIONEN FÜR NUTZER/-INNEN
UND QUALIFIZIERTES FACHPERSONAL
BITTE ZUERST LESEN...............................................................2
SIGNALZEICHEN.......................................................................2
BESTIMMUNGSGEMÄSSER EINSATZ ....................................4
HAFTUNGSAUSSCHLUSS........................................................4
EG-KONFORMITÄT ...................................................................4
SICHERHEIT................................................................................4
KUNDENDIENST.......................................................................5
GEWÄHRLEISTUNG / GARANTIE.........................................5
ENTSORGUNG...........................................................................5
INFORMATIONEN FÜR NUTZER/-INNEN
FUNKTIONSWEISE VON WÄRMEPUMPEN..........................6
EINSATZBEREICH......................................................................6
BETRIEB........................................................................................6
WARTUNG DES GERÄTS.........................................................7
Reinigen und Spülen von Gerätekomponenten................7
STÖRUNGSFALL ........................................................................7
ANWEISUNGEN FÜR QUALIFIZIERTES
FACHPERSONAL
LIEFERUMFANG .........................................................................8
AUFSTELLUNG UND MONTAGE...........................................8
Aufstellungsraum ..................................................................8
Transport zum Aufstellungsort ..........................................9
Aufstellung ...........................................................................10
Einbau der Modulbox ......................................................... 11
Montage der hydraulischen Anschlüsse ..........................12
Öffnen der Eckkugelhähne an der Modulbox.................15
Sicherheitsbaugruppe.........................................................15
Ausdehungsgefässe .............................................................15
ELEKTRISCHE ANSCHLUSSARBEITEN...............................16
SPÜLEN UND BEFÜLLEN DER ANLAGE............................18
Spülen und befüllen der Wärmequelle............................18
Spülen und befüllen des Heiz- und
Brauchwarmwasserladekreises ..................................19
Spülen, befüllen und entlüften des
Brauchwarmwasserspeichers......................................20
ENTLÜFTEN..............................................................................20
Entlüften der Modulbox.....................................................20
Entlüften der Umwälzpume der Wärmequelle ..............20
Prüfen und Einstellen des Überströmventils..................21
MONTAGE DES BEDIENTEILS ..............................................22
MONTAGE UND DEMONTAGE DER SICHTBLENDE.....23
BRAUCHWARMWASSERSPEICHER.....................................24
INBETRIEBNAHME ..................................................................24
Sicherheitstemperaturbegrenzer .....................................25
DEMONTAGE............................................................................25
TECHNISCHE DATEN / LIEFERUMFANG
WZS 41H(/K) – WZS 101H(/K)........................................28
LEISTUNGSKURVEN
Heizleistung/COP / Leistungsaufnahme /
Freie Pressung
Leistungskurven ..................................................................30
WZS 41H/SX .......................................................................30
WZS 60H/SX.......................................................................31
WZS 80H/SX.......................................................................32
WZS 100H/SX.....................................................................33
MASSBILDER UND ABSTANDSMASSE
Maßbilder .............................................................................34
Abstandsmaße .....................................................................35
KLEMMENPLAN .......................................................................36
STROMLAUFPLÄNE ................................................................37
WZS 41H/SX .......................................................................37
WZS 60H/SX - WZS 100H/SX.........................................39
ANHANG
EG-KONFORMITÄTSERKLÄRUNG......................................41
GROBCHECKLISTE..................................................................43
FERTIGSTELLUNGSANZEIGE FÜR
WÄRMEPUMPENANLAGEN............................................45
KUNDENDIENST
Adressen für den Servicefall .............................................46

4We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
Intended use
The unit may be used only for the intended purpose.
This means:
•for heating.
•for domestic water heating.
•in frost-free buildings
The unit may be operated only within its technical
parameters.
Overview “Technical data / scope of delivery”.
NOTE.
Notify the responsible power supply
company of the use of a heat pump or heat
pump system.
Disclaimer
The manufacturer is not liable for losses resulting from
any use of the unit which is not its intended use.
The manufacturer’s liability also expires:
•if work is carried out on the unit and its
components contrary to the instructions in this
operating manual.
•if work is improperly carried out on the unit and
its components.
•if work is carried out on the unit which is not
described in this operating manual, and this
work has not been explicitly approved by the
manufacturer in writing.
•if the unit or components in the unit have been
altered, modied or removed without the explicit
written consent of the manufacturer.
EC conformity
The unit bears the CE mark of conformity.
EC declaration of conformity
Safety
The unit is safe to operate for its intended use. The
construction and design of the unit conform to current
state of the art standards, all relevant regulations and all
relevant safety regulations.
Every person who performs work on the unit must
have read and understood the operating manual prior
to starting any work. This also applies if the respective
person has already worked with such a unit or a similar
unit or has been trained by the manufacturer.
Every person who performs work on the unit must
comply with the applicable accident prevention and
safety regulations. This applies in particular to the
wearing of personal protective equipment.
DANGER!
Risk of fatal injury due to electric shock!
Electrical connections may be installed
only by qualied electricians.
Before opening the unit, disconnect the
system from the power supply and secure
it from being switched back on!
DANGER!
Only qualied technicians (trained
heating, cooling, refrigerant and electrical
technicians) may perform work on the
unit and its components.
WARNING!
Observe safety labels on and in the unit.
WARNING!
Unit contains refrigerants!
Leaking refrigerant could result in
personal injury or material damage.
Therefore:
– Shut down unit.
– Ventilate installation location
– Notify the manufacturer’s authorised
service centre.
CAUTION!
For safety reasons:
Never disconnect the unit from the power
supply unless the unit is being opened.

5
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UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
Customer service
For technical information please contact a qualied
technician or the manufacturer’s local partner.
Overview “Customer service”.
Warranty / Guarantee
For warranty and guarantee conditions, please refer to
the purchase documents.
NOTE.
Please contact your dealer concerning
warranties and guarantees.
Disposal
When decommissioning the unit, always comply with
applicable laws, directives and standards for the recovery,
recycling and disposal of materials and components of
cooling units.
“Dismantling”.

6We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
Operating principle of heat
pumps
Heat pumps operate on the same principle as a
refrigerator: same technology, only with reversed
benets. The refrigerator extracts heat from foods,
which is released into the room through ns on the back.
The heat pump extracts heat from our environment: air,
earth or ground water. The extracted heat is conditioned
in the unit and supplied to the heating water. Even when
it is extremely cold outside, the heat pump draws
enough heat to heat a house.
Example: drawing of a brine/water heat pump with
underoor heating:
4/4= usable energy
approx. 3⁄4= environmental energy
approx. 1⁄4= external
electrical energy
Area of utilisation
Taking into consideration the ambient conditions, limits
of application and the applicable regulations, every heat
pump can be utilised in new or existing heating systems.
Overview “Technical data / scope of delivery”.
Operation
Your decision to purchase a heat pump or a heat
pump system is a long-term contribution to protecting
the environment through low emissions and reduced
primary energy use.
You can operate and control the heat pump system
with the control element of the heating and heat pump
regulator.
NOTE.
Make sure that the control settings are
correct.
Operating manual of the heating and heat pump
regulator.
To ensure that your heat pump or heat pump system
operates efciently and ecologically, the following are
especially important:
€ENERGY SAVING TIP
Avoid unnecessarily high ow tempera-
tures.
A lower ow temperature on the hot
water side increases the efciency of the
system.
€ENERGY SAVING TIP
When letting in fresh air, do not leave
windows open for an extended period,
in order to save energy and reduce your
heating costs.

7
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UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
Care of the unit
The outer surfaces of the unit can be cleaned with a
damp cloth and household cleaning products.
Do not use cleaning or care products that contain
abrasives, acids and/or chlorine. Such products would
destroy the surfaces and could also damage the technical
components of the unit.
Maintenance of the unit
The cooling circuit of the heat pump requires no regular
maintenance.
According to EU regulation (EC) 842/2006 of May 17,
2006, leak inspections and maintenance of a log book
are required for certain heat pumps!
The criteria for conducting leak inspections and
maintaining a log book are based on the hermetic
impermeability of the cooling circuit and the refrigerant
capacity of the heat pump! No log book is required for
heat pumps with a refrigerant capacity of < 3kg. With all
other heat pumps, the log book is included with all other
delivered materials.
Log book for heat pumps, Section “Information
on use of the log book”.
The components of the heating circuit and the heat
source (valves, expansion vessels, circulating pumps,
lters, dirt traps) should be inspected as well as cleaned
as needed - at the very least annually - by a qualied
heating or cooling system technician.
Regularly check that the safety valve for the domestic
hot water tank is in proper working order.
It is a good idea to have a maintenance contract with a
heating installation company. The company will conduct
all required maintenance at regular intervals.
CleaningandflushingofunitComponents
CAUTION!
Unit components may be cleaned
and ushed only by customer service
personnel authorised by the manufacturer.
Use only liquids recommended by the
manufacturer.
Flushing of the liqueer with chemical
cleaning agents must be followed by
neutralisation of residue and intensive
ushing with water. Always observe the
technical data of the manufacturer of the
heat exchanger.
Malfunctions
In the event of a malfunction, you can detect the cause
of the malfunction via the diagnostic program of the
heating and heat pump regulator.
Operating manual of the heating and heat pump
regulator.
WARNING!
Service and repair work on the
components of the unit may be performed
only by customer service personnel
authorised by the manufacturer.
Overview “Customer service”.
Note that no malfunction is displayed if the safety
temperature limiter on the electric heating element has
been triggered.
“Commissioning”, “Safety temperature limiter”
section.

8We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
Scope of delivery
Example of scope of delivery:
1 Compact unit with integrated
domestic hot water tank,
electric heating element,
integrated circulating pump
heating circuit and sensors
2 Screen
3 Vibration decouplers for
heat source connection
4 Control element of the heating
and heat pump regulator
5 Heating circuit safety assembly
6 Package with 4 feet, 1 outdoor
sensor, 1 insulating set, 2 ball valves,
8 seals, 1 service hose, 1 cap valve,
1 mount for expansion vessel of
heating circuit, 1 discharge funnel
7 Expansion vessel of
heating circuit, 25 l
8 Expansion vessel of heat source, 12 l
9 Connection assembly
for heat source
10 Module box with integrated
circulating pump of heat source
Complete the following rst:
Inspect the delivery for outwardly visible signs of
damage…
Check to make sure that the delivery is complete.
Any defects or incorrect deliveries must be
reported immediately.
NOTE.
Note the model.
Overview “Technical data / scope of delivery” or
rating plate on unit.
Installation and assembly
The following applies to all work to be done:
NOTE.
Always comply with the applicable local
accident prevention regulations, statutory
regulations, ordinances, guidelines and
directives.
WARNING!
The heat pump or heat pump system
may be installed and assembled only by a
qualied technician!
NOTE.
Observe the sound levels of the respective
model.
Overview “Technical data / scope of delivery”,
“Sound” section.
installationarea
CAUTION!
Install the unit only indoors.
The installation area must be frost-free and dry. It must
meet the requirements of EN 378. It must also full
applicable local regulations.

9
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UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
transporttoinstallationloCation
To avoid damage during transport, you should transport
the unit to the nal installation location (secured on a
wooden pallet) using a lifting truck.
If it is not possible to transport the unit to the nal
installation location using a lifting truck, you can also
transport the unit using a hand truck.
WARNING!
Several people are required to transport
the unit. Do not underestimate the weight
of the units.
Overview “Technical data / scope of delivery”,
“General unit data” section.
CAUTION!
Wear safety gloves.
WARNING!
Unit is not fastened to the wooden pallet.
The unit can tip when being lifted down
and during transport with a hand truck.
This can result in personal injury and
damage to the unit.
– Take suitable precautions to prevent
the risk of tipping over.
Proceed as follows if transport with a lifting truck is not
possible:
Remove packaging and transport material. Remove
extra box and module box from the wooden pallet
and bring to installation location.
Use straps to lift and carry the module box.
CAUTION!
Do not tilt the module box more than a
maximum of 45° (in any direction).
CAUTION!
Never use components, pipes of the
cooling circuit or hydraulic connections on
the module box for transport purposes.
CAUTION!
Do not damage the hydraulic connections
under any circumstances.
Dispose of angle bracket, transport and packaging
material properly and in accordance with ecological
principles.
We recommend removing the front panel to reduce
the weight of the unit for further transport.
Loosen quick-release screws for the front panel.
Turn through 90° to the left…
Lift front panel and set aside in a safe place.
DANGER!
The carrying strap attached to the back of
the unit is an aid for tipping the unit onto a
hand truck! Always secure the unit on the
hand truck with a tension belt!
The carrying strap can also be used
as a transport aid so that the unit
without the module box can be carried
by two persons (see illustration)!
Do not lift or transport the unit using only
the strap!
– The strap could break!
– Persons could be injured!
– Persons beneath the load could be
fatally injured!
– The unit itself or other equipment
could be damaged!

10 We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
“Dimensional drawings” and “Clearance
dimensions” overviews.
Proceed as follows at the installation location:
CAUTION!
Set unit on a solid and level, preferably
sound-insulated surface.
Mount feet…
CAUTION!
Moving the unit without the feet mounted
can damage the oor.
Mount the feet before installing the
module box in the unit.
Proceed as follows to mount the feet on the unit:
•
Tip the unit slowly and carefully to one side.
Secure unit in raised tilted position so that it cannot
accidentally tip back into the original position.
CAUTION!
Hands and ngers could be crushed during
the following tasks!
•
Mount one foot each on the front and back of the
unit.
1 Foot
2 Lock nut
3 Adjusting screw
Transport unit to installation location using a hand
truck or have two persons carry it.
CAUTION!
Do not damage the hydraulic connections
under any circumstances.
– Push hand truck only beneath back of
unit for transport.
NOTE.
Without the module box, the unit can be
transported horizontally.
1 Recessed grips
2 Carrying strap
CAUTION.
Never use components and hydraulic
connections on the unit for purposes of
transport.
installation
WARNING!
Several people are required to install the
unit. Do not underestimate the weight of
the unit.
NOTE.
The heat source can be connected either
on the left or right side of the unit.
Maintain the required clearance between
the connection side and the wall.
“Installation of the hydraulic connections”,
“Connection of module box to the heat source”
section.
CAUTION!
Always comply with required clearance
dimensions.

11
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UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
•
Slowly and carefully tip the unit back into the
original position.
•
Repeat procedure on the other side of the unit.
Place unit at nal installation location. Compensate
for minor unevenness using the four adjusting
screws. Then tighten the lock nuts.
installationofthemodulebox
The entire cooling circuit of the heat station is contained
in the module box.
CAUTION!
Do not tilt the module box more than a
maximum of 45° (in any direction).
Place module box in front of the unit.
1 Unit
2 Plug for electrical connection
3 Front edge of bottom of unit
4 Module box
Use straps to lift module box and initially place in
unit so that the rubber feet of the module box that
are facing the unit come to rest on the centring
plate behind the front edger of the bottom of the
unit.
Push module box into the unit until the front rubber
foot of the module box contacts the front edge of
the bottom of the unit and has to be lifted over it.
When pushing in the box, make sure that the plugs
for the electrical connection are not pinched and
damaged.
Raise module box, push it further into the unit and
lower the box as soon as the rubber feet contact
the corresponding stops of the centring plate.
Set the front left rubber foot of the module box
between the guide elements.
The module box is positioned correctly in the unit
when the rubber feed are placed as shown in the
following sketch:
1 Stops on centring plate
2 Rear rubber feet of module box
3 Centring plate for module
box on bottom of unit
4 Front rubber feet of module box
5 Guide element
CAUTION!
Once the module box has been placed in
the unit, it may no longer be transported.

12 We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
installationofthehydrauliCConneCtions
CAUTION!
The heat source system must be
constructed according to the specications
of the planning manual.
Planning manual and “Hydraulic connection”
instructions.
NOTE.
Check to make sure that the diameters
and lengths of the pipes for the heating
circuit and the heat source are sufciently
dimensioned. The free compression of the
circulating pumps must be able to deliver
at least the minimum ow rate required
for your model.
Overview “Technical data / scope of delivery”,
“Heat source” and “Heating circuit” sections.
DANGER!
Risk of fatal injury due to electric shock!
Before opening the unit, disconnect the
system from the power supply and secure
it from being switched back on!
Proceed as follows:
Install shut-off devices at the heating circuit.
Install shut-off devices at the heat source.
NOTE.
During installation of the shut-off devices,
the evaporator and liqueer of the heat
pump can be ushed, if necessary.
CAUTION!
The condenser may be ushed only by
customer service personnel authorised by
the manufacture .
CAUTION!
During connection of components, secure
connections on the module box and on the
compact unit against twisting in order to
prevent damage to the copper pipes in the
inside of the module box and the compact
unit.
Place a bleeder at the highest point of the heat
source in the heat source outlet…
If necessary, place a bleeder at the highest point of
the heat source in the heat source inlet…
Place a bleeder at the highest point of the heating
circuit in the heating circuit outlet (forward ow)…
If necessary, place a bleeder at the highest point of
the heating circuit in the heating circuit inlet (return
ow)…
We recommend installing a contamination lter
(screen size 0.9 mm) on the heat source inlet
connection.
ConneCtionsonthemodulebox
1 Heat source inlet
2 Heat source outlet
3 Electric/sensor lines
4 Heating circuit outlet (forward ow)
5 Heating circuit inlet (return ow)
ConneCtingthemoduleboxtotheheating
CirCuit
The vibration decouplers for the connection of the
heating circuit to the module box are pre-mounted in
the unit. They are located to the right of the module box
after it has been inserted.
Proceed as follows:

13
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UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
ConneCtingthemoduleboxtotheheatsourCe
Vibration decouplers are included for the connection to
the pipes of the heat source. They must be installed in
order to prevent the transfer of structure-borne sound
to the xed piping. The pipes of the heat source can be
connected either on the right or left side of the unit.
1 Connection on left side of unit
2 Connection on right side of unit
Proceed as follows:
Cut out round plates on the desired connection
side.
Remove the tags cleanly so that no metal burrs
remain. Cut foam with a knife…
Remove two seals from the extra box and place
them in the angle ball valves.
Screw angle ball valves of the vibration decouplers
to the heating circuit connections.
Heating circuit outlet (forward
ow) connection
Heating circuit inlet (return
ow) connection
NOTE.
Always note which is the inlet (return ow)
and outlet (forward ow) of the heating
circuit. They are marked with colours, as
are the vibration decouplers:
red = hot water outlet (forward ow)
blue = hot water inlet (return ow)

14 We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
A B
A Top view of outside of unit
B Top view of inside of unit
1 Heat source inlet
2 Heat source outlet
Screw included angle ball valves to vibration
decouplers. Use seals from the extra box.
Screw angle ball valves to the connections provided
on the module box. Use seals from the extra box.
CAUTION.
When tightening the connections on the
module box, always secure connections
against twisting.
Insert included plastic rosettes in the holes.
Insert vibration decouplers in unit from outside and
guide them inside the unit to the connections on
the module box…
ConneCtionofthevibrationdeCouplers
Proceed as follows:
Arrange vibration decouplers in a quarter circle in
the unit to the connections on the module box.
Example of hose installation for connection on right
side of unit:
A B
A Top view of outside of unit
B Top view of inside of unit
1 Heat source inlet
2 Heat source outlet
Example of hose installation for connection on left
side of unit:

15
We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
ConneCtionoftheCompaCtunittotheheating
anddomestiChotwaterCirCuit
The connections for the pipes of the heating circuit and
the hot water supply are located on the top of the unit.
1 Heating circuit inlet (return ow)
2 Connection for heating
circuit safety assembly
3 Domestic hot water connection, hot
4 Heating circuit outlet (forward ow)
5 Domestic hot water
connection, cold
6 Service opening
7 Safety valve, domestic
hot water tank
Proceed as follows:
When connecting the heating circuit, install bleeding
valves above the heat station…
Connect the domestic hot water tank according to
the relevant local standards and guidelines.
Connect the safety drain (safety valve) of the
domestic hot water tank according to the relevant
local standards and guidelines.
CAUTION!
Do not exceed the operating pressures
specied on the rating plate. Install a
pressure reducer, if necessary.
openingtheangleballvalvesonthemodule
box
Open all angle ball valves on the module box by turning
them 90° anti-clockwise.
safetyassembly
The safety assembly for the heating circuit is in the extra
box.
Proceed as follows:
Fit the safety assembly (heating circuit) to the
connection provided at the top of the unit.…
The safety drain of the safety valve (heating
circuit) must lead into the drain via a funnel siphon
in accordance with the relevant standards and
regulations.
expansionvessels
The expansion vessel of the heat source is included in
delivery and must be installed with the connection
assembly.
The expansion vessel for the heating circuit, the
corresponding cap valve and the wall mount are included
in the scope of delivery. They must be integrated in the
heating circuit on-site in compliance with the applicable
standards and directives.

16 We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
CAUTION!
Insert all three connecting plugs of the
module box in the plug-in connections on
the bottom of the intermediate oor of the
unit. Watch out for retaining nose. Plugs
must be mounted for easy movement…
Open electrical switch cabinet of unit…
To do this, only loosen the two upper screws of the
cover plate. Remove the remaining screws. Now the
cover plate can be removed…
Insert load lines and external control and sensor
wires in unit through holes at top for electric/
sensor wires. Guide wires via the cable duct to the
terminals. Tighten strain relief screws.
Install electrical connections according to the
terminal diagram and the circuit diagrams.
„“Terminal diagram” and “Circuit diagrams”.
WARNING!
Install electric connections only according
to the terminal diagram and the circuit
diagrams that apply to your model.
CAUTION.
The power supply for the heat pump
and the electric heating element must
be equipped with a 3-phase automatic
circuit-breaker with at least 3mm contact
spacing to IEC 60947-2.
Note the level of the trigger current.
Overview “Technical data / scope of delivery”,
“Electric” section.
Electrical connections
The following applies to all work to be done:
DANGER!
Risk of fatal injury due to electric shock!
Electrical connections may be installed
only by qualied electricians.
Before opening the unit, disconnect the
system from the power supply and secure
it from being switched back on!
DANGER!
Comply with the local regulations and
standards when installing and carrying out
electrical work.
Comply with technical connection
requirements of the responsible power
supply company (if required by the latter)!
NOTE.
All live wires must be stripped before they
are installed in the cable duct of the switch
cabinets!
Remove front panel of unit, if necessary.
Transport to installation location, .
1 Penetrations for electric/sensor
cables with strain relief screws
2 Electrical switch cabinet
3 Intermediate oor of unit
Connect connecting plug of module box…

17
We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
For further information, see the sticker on the
electric heating element.
1 Sticker on electric heating element
After completion of all electrical installation work,
close the switch cabinet inside the unit.
Close the front panel of the unit if no further
installation work inside the unit is to be performed
immediately.
1 Regulator connection, compressor
load, heating element load
2 Regulator board: Connections
for sensors, pumps...
Terminal diagram, circuit diagram for respective
model
NOTE.
The control element of the heat and
heat pump regulator can be connected
with a computer or network using an
network cable designed for such purposes,
therefore allowing the heating and heat
pump regulator to be controlled remotely.
If such a connection is desired, install
a screened network cable (category 6,
with RJ-45 plug) through the unit when
installing the connections and run it
through the front façade of the unit,
parallel to the already-present heating
and heat pump regulator control cable.
NOTE.
Electric heating element is connected to
6kW in the factory (except WZS 41H/SX
to 2kW). It can be re-connected to to 2,
4 or 6 kW at the contactor of the electric
heating element.

18 We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
10 Safety temperature limiter,
domestic hot water tank
11 Safety thermostat, domestic
hot water tank
12 Sensor, domestic hot water tank
13 Domestic hot water tank drain
emptying valve
(under foam cover)
flushingandfillingtheheatsourCe
Contamination and deposits in the heat source can cause
malfunctions.
Proceed as follows:
Flush heat source system thoroughly.
Thoroughly mix the anti-freeze, available as an
accessory, with water with the required ratio.
Add only anti-freeze mixed with water to the heat
source…
Check concentration of anti-freeze in the mixture…
CAUTION!
The concentration of anti-freeze in the
water must be at the level specied for
your model.
Overview “Technical data / scope of delivery”,
“Heat source” section.
Fill heat source with anti-freeze mixture.
Flushing and lling the unit
DANGER!
Risk of fatal injury due to electric shock!
The electric switch cabinet inside the unit
must be closed with the cabinet’s cover!
Proceed as follows:
Open unit if this has not already been done.
Transport to installation location, .
Obtain overview of the interior of the unit…
DANGER!
The electric switch cabinet inside the unit
must be closed with the cabinet’s cover!
1 2-way safety valve domestic
hot water circuit and 3-way
switching valve of heating circuit/
domestic hot water circuit
2 Bleeder, domestic hot water circuit
3 Pump ball valves
4 Circulating pump, heating
circuit/domestic hot water
5 Hot-water tank
6 Reset knob of electric
heating element
7 Differential pressure overow valve
8 Flushing ball valve
9 Electrical switch cabinet

19
We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
Remove the motor of the 3-way valve. To do so,
remove the U-bolt on the motor base and carefully
pull the motor upward ....
Turn stem of 3-way valve through 180° and ush
domestic hot water circuit for approx. 1 minute ....
Turn stem of 3-way valve through 180° back to
starting position (rounded side of stem points to B).
Flush heating circuit! If necessary, heating and hot
water circuit can be ushed at the same time! To do
this, turn the stem through 30° … At the same time
as ushing, open additional 2-way valve
After completing the ushing and lling, return the
stem of the 3-way valve to the starting position and
mount the motor of the 3-way valve… Reset switch
for 2-way valve
NOTE.
To ensure a good seat of the motor on
the valve, make sure that the U-bolt with
the reduction is not pushed past the lug,
because then the motor will not be held
securely on the valve!
In order to be supported securely, the U-bolt must
bear with both ends against the lug.
Move ushing ball valves to starting position.
flushingandfillingtheheatinganddomestiC
hotwaterCirCuit
Use the ushing ball valves for ushing and lling.
Picture shows operating condition
at time of delivery
Contamination and deposits in the heating circuit can
cause malfunctions.
CAUTION!
Before ushing and lling the system,
the drain pipe of the safety valve must be
connected. Do not exceed the response
pressure of the safety valve.
Proceed as follows:
Close ushing ball valve 3.
Connect hose for water outlet to ushing ball valve
1 ....
Open ushing ball valve 1 ....
Connect hose for water inlet to ushing ball valve 2
....
Open ushing ball valve 2 ....
Manually open two-way valve (side lever)

20 We reserve the right to modify technical specifications without prior notice.
UK830637/210804 – Translation of the operating manual © Alpha-InnoTec GmbH
flushing,fillingandbleedingthedomestiC
hotwatertank
CAUTION!
Drinking water must lie within the drinking
water quality. The maximum sulphate
content is 200mg/l, the maximum chloride
content is 200mg/l. The sum of the two
values must not exceed 300 mg/l!
CAUTION!
Before ushing and lling the domestic
hot water tank, the drain pipe of the safety
valve including funnel must be connected.
Do not exceed the response pressure of
the safety valve.
Proceed as follows:
Open domestic cold water inlet valve on domestic
hot water tank…
Open the domestic hot water valves at the taps…
Flush the domestic hot water tank until no more air
discharges from the valves at the taps…
Close domestic hot water valves at the taps.
Bleeding
The unit is bled automatically when the bleeder (black
cap) of the safety component of the heating circuit
is open. If the heating circuit is lled or emptied, the
bleeding valve of the safety assembly opens.
bleedingthemodulebox
Proceed as follows:
Attach service hose from the extra box to the angle
ball valve.
Bleed bleeding valves on the four angle ball valves
using the bleeding key…
bleedingtheCirCulatingpumpoftheheat
sourCe
Unscrew front panel of module box…
Loosen the screw-on cap in the middle of the
circulating pump for the heat source…
Screw on front panel of module box after bleeding.