alphainnoTec WZS 41-101H/SX User manual

We reserve the right to modify technical specifications without prior notice.
83063900cUK – Translation of the operating manual © ait-deutschland GmbH
HEAT PUMPS
Operating Manual
Brine heat station
BR INE/ WAT ER
UK
WZS 41-101H/SX

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83063900cUK – Translation of the operating manual © ait-deutschland 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.
ATTE NTION
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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83063900cUK – Translation of the operating manual © ait-deutschland GmbH
Inhaltsverzeichnis
INFORMATION FOR USERS AND
QUALIFIED PERSONNEL
PLEASE READ FIRST..................................................................2
SYMBOLS .....................................................................................2
INTENDED USE..........................................................................4
DISCLAIMER................................................................................4
EC CONFORMITY .....................................................................4
SAFETY.........................................................................................4
CUSTOMER SERVICE ................................................................5
Addresses for a service case...............................................5
WARRANTY / GUARANTEE ...................................................5
DISPOSAL ....................................................................................5
INFORMATION FOR OPERATORS
OPERATING PRINCIPLE OF HEAT PUMPS ..........................6
AREA OF UTILISATION............................................................6
OPER ATIO N ................................................................................6
MAINTENANCE OF THE UNIT..............................................7
Cleaning and flushing of unit components........................7
MALFUNCTIONS.......................................................................7
INSTRUCTIONS FOR QUALIFIED TECHNICIANS
SCOPE OF DELIVERY..................................................8
INSTALLATION AND ASSEMBLY...........................................8
Installation area.....................................................................8
Transport to installation location......................................9
Installation............................................................................10
Installation of the module box.......................................... 11
Installation of the hydraulic connections........................12
Opening the angle ball valves on the module box.........15
Safety ASSEMBLY................................................................15
Expansion vessels................................................................15
ELECTRICAL CONNECTIONS .............................................16
FLUSHING AND FILLING THE UNIT..................................18
Flushing and filling the heat source..................................18
Flushing and filling the heating and domestic hot water
circuit..............................................................................19
Flushing, filling and bleeding the domestic hot water
tank .................................................................................20
BLEEDING..................................................................................20
Bleeding the module box...................................................20
Bleeding the circulating pump of the heat source.........20
Inspecting and setting up the overflow valve.................21
INSTALLATION OF THE CONTROL ELEMENT ...............22
INSTALLATION AND REMOVAL OF THE SCREEN .........23
HOT-WAT ER TAN K .................................................................24
COMMISSIONING ...................................................................24
Safety temperature limiter................................................25
DISMANTLING .........................................................................25
TECHNICAL DATA / SCOPE OF DELIVERY
WZS 41H/SX – WZS 101H/SX.........................................28
PERFORMANCE CURVES
Heating capacity/COP / Power consumption /
Free compression
Performance curves............................................................30
WZS 41H/SX .......................................................................30
WZS 61H/SX .......................................................................31
WZS 81H/SX .......................................................................32
WZS 101H/SX .....................................................................33
DIMENSIONAL DRAWINGS AND CLEARANCE
DIMENSIONS
Dimensional drawings ........................................................34
Clearance dimensions ........................................................35
TERMINAL DIAGRAM.............................................................36
CIRCUIT DIAGRAMS ..............................................................37
WZS 41H/SX .......................................................................37
WZS 61H/SX - WZS 101H/SX..........................................39
APPENDIX
EC DECLARATION OF CONFORMITY..............................41

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83063900cUK – Translation of the operating manual © ait-deutschland 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!
WARNING!
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.
ATTE NTION
For safety reasons:
Never disconnect the unit from the power sup-
ply unless the unit is being opened.

5
We reserve the right to modify technical specifications without prior notice.
83063900cUK – Translation of the operating manual © ait-deutschland GmbH
Customer service
For technical information please contact a qualied
technician or the manufacturer’s local partner.
ADDRESSES FOR A SERVICE CASE
For a current list and additional partners of the
manufacturer, please:
DE: www.alpha-innotec.de
EU: www.alpha-innotec.eu
Warranty / Guarantee
For warranty and guarantee conditions, please refer to
the purchase documents.
NOTE.
Please contact your dealer concerning warran-
ties 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”.

6
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83063900cUK – Translation of the operating manual © ait-deutschland 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 temperatures.
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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83063900cUK – Translation of the operating manual © ait-deutschland 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.

8
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83063900cUK – Translation of the operating manual © ait-deutschland 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 circuitl
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 mo-
del.
Overview “Technical data / scope of delivery”,
“Sound” section.
INSTALLATION AREA
ATTE NTION
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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83063900cUK – Translation of the operating manual © ait-deutschland 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.
ATTE NTION
Do not tilt the module box more than a maxi-
mum of 45° (in any direction).
ATTE NTION
Never use components, pipes of the cooling cir-
cuit or hydraulic connections on the module box
for transport purposes.
ATTE NTION
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
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83063900cUK – Translation of the operating manual © ait-deutschland GmbH
“Dimensional drawings” and “Clearance
dimensions” overviews.
Proceed as follows at the installation location:
ATTE NTION
Set unit on a solid and level, preferably sound-in-
sulated surface.
Mount feet…
ATTE NTION
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.
ATTE NTION
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 trans-
ported horizontally.
1 Recessed grips
2 Carrying strap
ATTE NTION
Never use components and hydraulic connec-
tions 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 re-
quired clearance between the connection side
and the wall.
“Installation of the hydraulic connections”,
“Connection of module box to the heat source”
section.
ATTE NTION
Always comply with required clearance dimensi-
ons.

11
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83063900cUK – Translation of the operating manual © ait-deutschland 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.
ATTE NTION
Do not tilt the module box more than a maxi-
mum 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
ATTE NTION
Once the module box has been placed in the
unit, it may no longer be transported.

12
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83063900cUK – Translation of the operating manual © ait-deutschland GmbH
INSTALLATION OF THE HYDRAULIC CONNECTIONS
ATTE NTION
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 .
ATTE NTION
During connection of components, secure con-
nections 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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83063900cUK – Translation of the operating manual © ait-deutschland 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 = heating circuit outlet (forward ow)
blue = heating circuit inlet (return ow)

14
We reserve the right to modify technical specifications without prior notice.
83063900cUK – Translation of the operating manual © ait-deutschland GmbH
0
665
1990
0
115 230
1
2
~ 100 ~ 400
0
30
1920
1980
<2050
89
0
115 230
0
665
1
2
Legende : D819404
Technische Änderungen vorbehalten
alle Maße in mm
A Vorderansicht
B Seitenansicht von links
C Draufsicht
D Seitenansicht von rechts
A D
B
Pos. Bezeichnung Dim.
1
Wärmequelle Eintritt flachdichtend
ÜWM ( wahlweise rechts oder links )
G 1"
2
Wärmequelle Austritt flachdichtend
ÜWM ( wahlweise rechts oder links )
G 1"
3 Heizwasser Eintritt ( Rücklauf ) R 1"
4 Heizwasser Austritt ( Vorlauf ) R 1"
5 Brauchwarmwasser R 3/4"
6 Kaltwasser R 3/4"
7 Durchführung für Elektro- / Fühlerkabel ---
8 Bedienteil ( im Beipack ) ---
9
Sicherheitsbaugruppe Heizkreis
( im Beipack )
---
10
Sicherheitsventil
Brauchwarmwasserspeicher
22mm
8 7 6 5
4 3 2 1
www.alpha-innotec.de
D - 95359 Kasendorf
Industriestraße 3
Alpha-InnoTec GmbH
Schutzvermerk nach DIN 34 beachten
1
1
Ers. d.
Ers. f.
A
B
C
D
E
F
F
E
D
C
B
A
4 3 2 1
Benennung
Maßbild
WZS mit Edelstahlspeicher
819404
-
Zust. Änderungstext
PEP 005/2011
Datum
10.8.2011
RE
Von
Blatt
von
Werkstoff
Gewicht
Maßstab
1:25 1:20
Det. Maßstab
Datum Name
Erstellt
Gepr.
Norm.
9.8.2011
Eberlein
toleranz
Allgemein-
DIN ISO 2768 -c
Oberflächen
ArtikelNr.
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.
ATTE NTION
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:
0
665
1990
0
115 230
1
2
~ 100 ~ 400
0
30
1920
1980
<2050
89
0
115 230
0
665
1
2
Legende : D819404
Technische Änderungen vorbehalten
alle Maße in mm
A Vorderansicht
B Seitenansicht von links
C Draufsicht
D Seitenansicht von rechts
A D
B
Pos. Bezeichnung Dim.
1
Wärmequelle Eintritt flachdichtend
ÜWM ( wahlweise rechts oder links )
G 1"
2
Wärmequelle Austritt flachdichtend
ÜWM ( wahlweise rechts oder links )
G 1"
3 Heizwasser Eintritt ( Rücklauf ) R 1"
4 Heizwasser Austritt ( Vorlauf ) R 1"
5 Brauchwarmwasser R 3/4"
6 Kaltwasser R 3/4"
7 Durchführung für Elektro- / Fühlerkabel ---
8 Bedienteil ( im Beipack ) ---
9
Sicherheitsbaugruppe Heizkreis
( im Beipack )
---
10
Sicherheitsventil
Brauchwarmwasserspeicher
22mm
8 7 6 5
4 3 2 1
www.alpha-innotec.de
D - 95359 Kasendorf
Industriestraße 3
Alpha-InnoTec GmbH
Schutzvermerk nach DIN 34 beachten
1
1
Ers. d.
Ers. f.
A
B
C
D
E
F
F
E
D
C
B
A
4 3 2 1
Benennung
Maßbild
WZS mit Edelstahlspeicher
819404
-
Zust. Änderungstext
PEP 005/2011
Datum
10.8.2011
RE
Von
Blatt
von
Werkstoff
Gewicht
Maßstab
1:25 1:20
Det. Maßstab
Datum Name
Erstellt
Gepr.
Norm.
9.8.2011
Eberlein
toleranz
Allgemein-
DIN ISO 2768 -c
Oberflächen
ArtikelNr.
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.
83063900cUK – Translation of the operating manual © ait-deutschland 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 water connection, hot
4 Heating circuit outlet (forward ow)
5 Domestic water connection, cold
6 Service opening
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.
ATTE NTION
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.
83063900cUK – Translation of the operating manual © ait-deutschland GmbH
ATTE NTION
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”.
ATTE NTION
The power supply for the heat pump and the
electric heating element must be equipped with
an automatic circuit-breaker with at least 3mm
contact spacing to IEC 60947-2.
Note the level of the trigger current.
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!
WARNING
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.
83063900cUK – Translation of the operating manual © ait-deutschland GmbH
NOTE.
Electric heating element is connected to 6kW
in the factory (except WZS 41H/SX to 2kW).
It can be reconnected to 2, 4 or 6 kW at the
contactor of the electric heating element.
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.
Overview “Technical data / scope of delivery”,
“Electric” section.
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 remo-
tely.
If such a connection is desired, install a scree-
ned 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.

18
We reserve the right to modify technical specifications without prior notice.
83063900cUK – Translation of the operating manual © ait-deutschland GmbH
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…
ATTE NTION
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!
Open unit if this has not already been done.
Transport to installation location, .
Obtain overview of the interior of the unit…
1 2-way safety valve heating circuit for domestic
water and 3-way switching valve of heating
circuit/heating circuit for domestic water
2 Bleeder
3 Pump ball valves
4 Circulating pump, heating circuit/
heating circuit for domestic 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
10 Safety temperature limiter, domestic water tank
11 Safety thermostat, domestic water tank
12 Domestic hot water tank drain emptying valve
(under foam cover)

19
We reserve the right to modify technical specifications without prior notice.
83063900cUK – Translation of the operating manual © ait-deutschland GmbH
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.
ATTE NTION
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 ....
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 ....

20
We reserve the right to modify technical specifications without prior notice.
83063900cUK – Translation of the operating manual © ait-deutschland GmbH
FLUSHING, FILLING AND BLEEDING THE DOMESTIC
HOT WATER TANK
ATTE NTION
Drinking water must lie within the drinking wa-
ter 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!
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.