alphainnoTec WZSV Series User manual

www.alpha-innotec.com
OPERATING MANUAL
WZSV SERIES
UK
Brine/Water heat pumps
Brine heat station
83056900kUK

2Subject to change without notice | 83056900kUK | ait-deutschland GmbH
Table of contents
1 About this operating manual......................3
1.1 Validity.......................................................3
1.2 Reference documents...............................3
 6\PEROVDQGLGHQWL¿FDWLRQPDUNLQJV ........3
1.4 Contact......................................................4
2 Safety...............................................................4
2.1 Intended use .............................................4
 3HUVRQQHOTXDOL¿FDWLRQV ............................4
2.3 Personal protective equipment .................4
 5HVLGXDOULVNV............................................4
2.5 Disposal ....................................................5
2.6 Avoid damage to property.........................5
3 Description......................................................6
3.1 Layout .......................................................6
3.2 Accessories...............................................8
3.3 Function ....................................................8
4 Operation and care.......................................9
4.1 Energy and environmentally aware
operation...................................................9
4.2 Maintenance..............................................9
5 Delivery, storage, transport and
installation.......................................................9
5.1 Scope of supply ........................................9
5.2 Storage......................................................9
 8QSDFNLQJDQGWUDQVSRUW.........................10
5.4 Installation................................................11
6 Installation and connection........................11
6.1 Dismantle the module box .......................11
6.2 Install the module box............................. 14
6.3 Install the hydraulic connections............. 14
6.4 Connect the electrical cables.................. 15
6.5 Installing the control panel...................... 16
 )OXVKLQJ¿OOLQJDQGYHQWLQJ ...................... 17
7.1 Remove the front panel of
the module box........................................ 17
 )LOOÀXVKDQGYHQWKHDWVRXUFH ............... 18
7.3 Vent the circulation pump of
the heat source.......................................18
 )OXVKDQG¿OOWKHKHDWLQJDQG
domestic hot water charging circuit......... 19
 )OXVK¿OODQGYHQW
WKHGRPHVWLFKRWZDWHUWDQN ....................20
8 Insulate hydraulic connections................20
 6HWWKHRYHUÀRZYDOYH................................20
10 Commissioning............................................ 21
11 Maintenance.................................................22
11.1 Basic principles.......................................22
11.2 Maintenance after commissioning..........22
11.3 Maintenance as required ........................22
 &OHDQLQJDQGÀXVKLQJWKHFRQGHQVHU......22
11.5 Yearly maintenance.................................22
12 Faults..............................................................22
 8QORFNWKHVDIHW\WHPSHUDWXUHOLPLWHU .....22
 0DQXDOO\XQEORFNWKHFLUFXODWLQJSXPSV .23
13 Dismantling and Disposal.........................23
13.1 Dismantling .............................................23
13.2 Disposal and recycling............................23
 5HPRYDORIWKHEXႇHUEDWWHU\..................23
Technical data / Scope of supply...................24
WZSV 62(H)(K)3M – WZSV 92(H)(K)3M.........24
WZSV 122(H)(K)3M.........................................25
Performance curves..........................................26
WZSV 62(H)(K)3M...........................................26
WZSV 92(H)(K)3M...........................................27
WZSV 122(H)(K)3M.........................................28
Dimensional drawings.......................................29
WZSV 62(H)(K)3M – WZSV 122(H)(K)3M.......29
Connections.....................................................30
Control unit....................................................... 31
:DOOPRXQWHGEUDFNHW ...................................... 31
Installation plans.................................................32
Installation plan 1.............................................32
Installation plan 2 .............................................33
Installation plan 3 .............................................34
Hydraulic integration..........................................35
Unit variant H....................................................35
ZLWKVHSDUDWHEXႇHUWDQN..................................36
Unit variant K....................................................37
Keys hydraulic integration ................................38
Terminal diagrams .............................................39
WZSV 62(H)(K)3M – WZSV 92(H)(K)3M.........39
WZSV 122(H)(K)3M – WZSV 122(H)(K)3M.....40
Circuit diagrams.................................................. 41
WZSV 62(H)(K)3M – WZSV 92(H)(K)3M......... 41
WZSV 122(H)(K)3M.........................................44

3
Subject to change without notice | 83056900kUK | ait-deutschland GmbH
1 About this operating manual
This operating manual is part of the unit.
Ź %HIRUH ZRUNLQJ RQ RU ZLWK WKH XQLW UHDG WKH
operating manual carefully and follow it for all
activities at all times, especially the warnings and
safety instructions.
ŹKeep the operating manual to hand at the unit and
hand over to the new owner if the unit changes
hands.
ŹIf you have any questions or anything is unclear,
DVN WKH ORFDO SDUWQHU RI WKH PDQXIDFWXUHU RU WKH
factory's customer service.
ŹNote and follow all reference documents.
1.1 Validity
This operating manual refers solely to the unit
LGHQWL¿HGE\WKHQDPHSODWHDQGXQLWVWLFNHUÆ“Rating
plate”, page 7).
1.2 Reference documents
The following documents contain additional information
to this operating manual:
ƔPlanning & design manual, hydraulic integration
ƔOperating manual of the heating and heat pump
controller
ƔBrief description of the heat pump controller
ƔOperating manual of the expansion board
(accessories)
Ɣ/RJERRN
1.3 6\PEROVDQGLGHQWL¿FDWLRQ
PDUNLQJV
,GHQWL¿FDWLRQRIZDUQLQJV
Symbol Meaning
Safety-relevant information.
Warning of physical injuries.
Safety-relevant information.
Warning of physical injuries.
Danger of fatal injury due to
electric current.
Symbol Meaning
DANGER Indicates imminent danger resulting
in severe injuries or death.
WARNING Indicates a potentially dangerous
situation, which can result in severe
injuries or death.
CAUTION Indicates a potentially dangerous
situation, which can result in
moderate or minor injuries.
IMPORTANT Indicates a potentially dangerous
situation, which can result in
property damage.
Symbols in the document
Symbol Meaning
,QIRUPDWLRQIRUTXDOL¿HGSHUVRQQHO
Information for the owner/operator
9Requirement for action
XProcedural instructions:
Single-step instruction for action
1., 2., 3., … Procedural instructions:
Numbered step within a multi-step
instruction for action. Adhere to
the given sequence.
Additional information, e.g. a tip on
PDNLQJZRUNHDVLHU LQIRUPDWLRQ RQ
standards
ÆReference to further information
elsewhere in the operating manual
or in another document
ƔListing
Secure connections against twisting

4Subject to change without notice | 83056900kUK | ait-deutschland GmbH
1.4 Contact
Addresses for purchasing accessories, for service
cases or for answers to questions about the unit and
this operating manual can be found on the internet at
DQ\WLPHDQGLVNHSWXSWRGDWH
Ɣwww.alpha-innotec.com
2 Safety
Only use the unit if it is in proper technical condition
and only use it as intended, safely and aware of the
hazards, and follow this operating manual.
2.1 Intended use
The unit is designed for household use and is solely
intended for the following functions:
ƔHeating
ƔDomestic water heating
ƔCooling (optional, with accessories or unit type
…K3M)
ŹProper use includes complying with the operating
conditions (Æ“Technical data / Scope of supply”,
from page 24) and the operating manual and
noting and following the reference documents.
ŹWhen using the local regulations note: laws,
standards, guidelines, directives.
All other uses of the unit are not as intended.
2.2 3HUVRQQHOTXDOL¿FDWLRQV
The operating manuals supplied with the product are
intended for all users of the product.
The operation of the product via the heating and he-
DWSXPSFRQWURODQGZRUNRQWKHSURGXFWZKLFKLVLQ-
tended for end customers / operators is suitable for all
age groups of persons who are able to understand the
activities and the resulting consequences and can car-
ry out the necessary activities.
Children and adults who are not experienced in hand-
ling the product and do not understand the necessa-
ry activities and the resulting consequences must be
instructed and, if necessary, supervised by persons
experienced in handling the product and who are re-
sponsible for safety.
Children must not play with the product.
7KHSURGXFWPD\RQO\EHRSHQHGE\TXDOL¿HGSHUVRQQHO
All procedural instructions in this operating manual
DUH LQWHQGHG H[FXVLYHO\ IRU TXDOL¿HG DQG VNLOOHG
personnel.
2QO\ TXDOL¿HG VNLOOHG SHUVRQQHO LV DEOH WR FDUU\ RXW
WKHZRUNRQWKHXQLWVDIHW\DQGFRUUHFWO\,QWHUIHUHQFH
E\ XQTXDOL¿HG SHUVRQQHO FDQ FDXVH OLIHWKUHDWHQLQJ
injuries and damage to property.
ŹEnsure that the personnel are familiar with the lo-
FDOUHJXODWLRQVHVSHFLDOO\WKRVHUHODWLQJWRZRUN-
LQJVDIHO\DQGLQDZDUHQHVVRIWKHKD]DUGULVNV
Ź (QVXUHWKDWWKHSHUVRQQHODUHTXDOL¿HGWRKDQGOH
refrigerant.
Ɣ :RUNRQWKHUHIULJHUDWLQJFLUFXLWPD\RQO\EHFDU-
ULHG RXW E\ TXDOL¿HG SHUVRQQHO ZLWK DSSURSULDWH
TXDOL¿FDWLRQVIRUUHIULJHUDWLRQV\VWHPLQVWDOODWLRQ
Ɣ :RUNRQWKHHOHFWULFVDQGHOHFWURQLFVPD\RQO\EH
carried out by electrical technicians.
Ɣ $Q\ RWKHU ZRUN RQ WKH V\VWHP PD\ RQO\ EH FDU-
ULHG RXW E\ TXDOL¿HG SHUVRQQHO KHDWLQJ LQVWDOOHU
plumbing installer).
During the warranty and guarantee period, servicing
DQGUHSDLUZRUNPD\RQO\EHFDUULHGRXWE\SHUVRQQHO
authorised by the manufacturer.
2.3 Personal protective equipment
'XULQJWUDQVSRUWDQGZRUNRQWKHXQLWWKHUHLVDULVNRI
cuts due to the sharp edges of the unit.
ŹWear cut-resistant protective gloves.
'XULQJWUDQVSRUWDQGZRUNRQWKHXQLWWKHUHLVDULVNRI
foot injuries.
ŹWear safety shoes.
:KHQZRUNLQJRQOLTXLGFRQYH\LQJOLQHVWKHUHLVDULVN
RILQMXU\WRWKHH\HVGXHWROHDNDJHRIOLTXLGV
ŹWear safety goggles.
2.4 5HVLGXDOULVNV
Injuries caused by electric current
Components in the device are live with fatal voltage.
%HIRUHZRUNLQJRQWKHXQLW
ŹDisconnect unit from power supply.
Ź 3URWHFWXQLWDJDLQVWEHLQJVZLWFKHGEDFNRQDJDLQ
ŹResidual voltage at the inverter. Wait for 90
seconds before opening the unit.

5
Subject to change without notice | 83056900kUK | ait-deutschland GmbH
Existing earthing connections within housings or on
mounting plates must not be altered. If this should ne-
vertheless be necessary in the course of repair or as-
VHPEO\ZRUN
ŹRestore earthing connections to their original con-
GLWLRQDIWHUFRPSOHWLRQRIWKHZRUN
Injuries caused by high temperatures
Ź %HIRUHZRUNLQJRQWKHXQLWOHWLWFRROGRZQ
Safety instructions and warning symbols
ŹObserve the safety instructions and warning sym-
EROVRQWKHSDFNDJLQJDQGRQDQGLQWKHXQLW
,QMXU\GXHWRÀDPPDEOHOLTXLGVDQGSRWHQWLDOO\
explosive atmospheres
Constituents of antifreeze mixtures, e.g. ethanol,
PHWKDQRODUHKLJKO\ÀDPPDEOHDQGIRUPDQH[SORVLYH
atmosphere:
ŹMix antifreeze in well-ventilated rooms.
Ź 1RWH WKH KD]DUGRXV VXEVWDQFH PDUNLQJV DQG
comply with the relevant safety regulations.
Injuries and environmental damage due to
refrigerant
The unit contains harmful and environmentally
GDQJHURXVUHIULJHUDQW,IUHIULJHUDQWOHDNVIURPWKHXQLW
1. 6ZLWFKRႇXQLW
2. Thoroughly ventilate installation room.
3. Notify authorised customer service.
2.5 Disposal
Environmentally hazardous substances
Improper disposal of environmentally hazardous sub-
stances (e.g. refrigerant, compressor oil) damages the
environment:
ŹCollect substances safely.
ŹDispose of the substances in an environmental-
ly-friendly manner according to the local regulations.
2.6 Avoid damage to property
Cooling
If the heating surfaces are used for heating and cool-
ing, the control valves must be suitable for heating and
cooling.
%\ FRROLQJ ZLWK ORZ ÀRZ WHPSHUDWXUHV FRQGHQVDWH
can be expected to form on the heat distribution sys-
tem as the temperature falls below the dew point. If
the heat distribution system is not designed for these
operating conditions, it must be protected by appropri-
ate safety devices, e.g. dew point monitor (purchasa-
ble accessory).
Decommissioning/draining the heating
If the system/heat pump is decommissioned or drained
DIWHU DOUHDG\ EHLQJ ¿OOHG LW PXVW EH HQVXUHG WKDW
the condenser and any heat exchangers have been
drained completely for the event of freezing temper-
atures. Residual water in heat exchangers and con-
densers can result in damage to the components.
ŹCompletely drain the system and the condenser,
and open vent valves.
ŹBlow them clear with compressed air, if required.
Improper action
Requirements for minimum scale and corrosion
damage in hot water heating systems:
ƔProper planning, design and start-up
ƔClosed system with regard to corrosion
ƔIntegration of adequately dimensioned pressure
retention
ƔUse of deionised heating water (VE water) or with
water corresponding to VDI 2035 only
ƔRegular servicing and maintenance
If a system is not planned, designed, started up and
operated according to the given requirements, there is
DULVNWKDWWKHIROORZLQJGDPDJHDQGIDXOWVZLOORFFXU
ƔMalfunctions and the failure of components, e.g.
pumps, valves
Ɣ ,QWHUQDO DQG H[WHUQDO OHDNV HJ IURP KHDW
exchangers
Ɣ &URVVVHFWLRQ UHGXFWLRQ DQG EORFNDJHV LQ
components, e.g. heat exchanger, pipes, pumps
ƔMaterial fatigue
ƔGas bubbles and gas cushion formation
(cavitation)

6Subject to change without notice | 83056900kUK | ait-deutschland GmbH
Ɣ 1HJDWLYHHႇHFWRQKHDWWUDQVIHUHJIRUPDWLRQRI
coatings, deposits, and associated noises, e.g.
ERLOLQJQRLVHVÀRZQRLVHV
ŹNote and follow the information in this operating
PDQXDOIRUDOOZRUNRQDQGZLWKWKHXQLW
8QVXLWDEOHTXDOLW\RIWKH¿OODQGPDNHXS
water in the heating circuit
7KH HႈFLHQF\ RI WKH V\VWHP DQG WKH OLIH RI WKH KHDW
generator and the heating components depend
decisively on the quality of the heating water.
,I WKH V\VWHP LV ¿OOHG ZLWK XQWUHDWHG GULQNLQJ ZDWHU
calcium and magnesium precipitate as mineral scale.
Limescale deposits form on the heat transfer surfaces
RIWKHKHDWLQJ7KHHႈFLHQF\GURSVDQGHQHUJ\FRVWV
rise. In extreme cases the heat exchangers are
damaged.
ŹFill the system with deionised heating water
(VE water) or with water corresponding to VDI
2035 only (low-salt operation of the system).
Unsuitable quality of the water in the domes-
WLFKRWZDWHUWDQN
ŹEnsure that the electrical conductivity of the
GRPHVWLFZDWHULVDWOHDVWȝ6FPDQGWKDWWKH
GULQNLQJZDWHULVRIGULQNLQJZDWHUTXDOLW\
Unsuitable quality of the water-antifreeze
mixture in the heat source
ŹUse of pure water in the heat source is not permit-
ted
ŹFor operation of the heat source with a water-
antifreeze mixture, ensure that the water used
IXO¿OV WKH TXDOLW\ VSHFL¿FDWLRQV RI WKH KHDWLQJ
water side.
Æ ³)OXVKLQJ¿OOLQJDQGYHQWLQJ³IURPSDJH
3 Description
3.1 Layout
NOTE
This section essentially names the
FRPSRQHQWV UHOHYDQW IRU IXO¿OOLQJ WKH WDVNV
described in this operating manual.
Housing with unit components
NOTE
7KH¿JXUH VKRZV D XQLW YDULDQW + ZLWKRXW
cooling).

7
Subject to change without notice | 83056900kUK | ait-deutschland GmbH
 'RPHVWLFKRWZDWHUWDQN
2 Heating circuit/hot water circulation pump
3 Heating element
4 3-way changeover valve, heating circuit/
domestic hot water
5 Valve motor
6 Position of rating plate
 2YHUÀRZYDOYH
8 Venter
9 Electrical switch cabinet
'RPHVWLFKRWZDWHUWDQNVHQVRU
11 Module box
12 Height-adjustable foot (4x)
Rating plate
Rating plates are attached to the following places on
the unit:
Ɣat the top of the heating station
Ɣleft-hand side, on the module box
The rating plate contains the following information at
the top:
ƔUnit type, product number
ƔSerial number, unit index
The rating plate also contains an overview of the most
important technical data.
Module box – variant without cooling
1 Compressor
2 Condenser
3 Vibration isolator (4x)
4 Lifting lug (4x)
5 Evaporator
6 Heat source circulation pump
 +HDWVRXUFH¿OOLQJDQGGUDLQWDS
 +HDWLQJ¿OOLQJDQGGUDLQWDS
Module box – variant with cooling
1 Compressor
2 Condenser
3 Vibration isolator (4x)
4 Lifting lug (4x)
5 Evaporator
6 Heat source circulation pump
 +HDWVRXUFH¿OOLQJDQGGUDLQWDS
 +HDWVRXUFH¿OOLQJDQGGUDLQWDS
 +HDWLQJ¿OOLQJDQGGUDLQWDS
NOTE
The hose connectors are not part of the
scope of delivery with all KFE ball valves.

8Subject to change without notice | 83056900kUK | ait-deutschland GmbH
Control unit
1 Control panel
 3XVKXSÀDSXSVWUHDPRI86%FRQQHFWLRQIRU
TXDOL¿HGSHUVRQQHOIRUVRIWZDUHXSGDWHVDQG
for data logging)
 :DOOPRXQWHGEUDFNHWRQO\QHFHVVDU\IRU
wall-mounted installation)
Underside of the control panel
1 Connection room control unit
RBE RS 485 (accessory)
 5-FRQQHFWLRQFDEOHWRWKHQHWZRUNOLQN
3 Connection LIN bus to the regulator board
4 RJ45 connection not assigned
3.2 Accessories
The following accessories are available for the unit
through the manufacturer's local partner:
Ɣ $GGLWLRQDOPDVNLQJSODWHIRUWKHIURQWFRYHUSDQHO
if the control is mounted on the wall
ƔRoom thermostat for switching the cooling
function (if included)
ƔDew point monitor for protecting a system with
FRROLQJIXQFWLRQDWORZÀRZWHPSHUDWXUHV
ƔExpansion board
Ɣ ³&RROLQJSDFNDJH´IRUUHWUR¿WWLQJW\SH+XQLWVZLWK
a cooling function
Ɣ +HDWLQJFLUFXLWVDIHW\SDFNDJH
Ɣ +HDWVRXUFHFLUFXLWVDIHW\SDFNDJH
ƔAir / magnetic sludge separator
3.3 Function
Liquid refrigerant is evaporated (evaporator), the
energy for this process is environmental heat and
comes from the “ground” heat source (collector,
borehole heat exchanger or groundwater via
intermediate exchanger). The gaseous refrigerant is
compressed (compressor), this causes the pressure
to rise and therefore the temperature too. The
JDVHRXVUHIULJHUDQWZLWKKLJKWHPSHUDWXUHLVOLTXH¿HG
(condenser).
Here the high temperature is discharged to the heating
water and is used in the heating circuit. The liquid
refrigerant with high pressure and high temperature
is expanded (expansion valve). The pressure and
temperature drop and the process begins again.
Due to the integrated changeover valve and the
LQWHJUDWHG HQHUJ\ HႈFLHQF\ FLUFXODWLRQ SXPS WKH
heated heating water can be used for charging the
domestic hot water or for heating the building. The
temperatures required and use are controlled by the
heat pump controller. Reheating, drying out screed or
increasing the domestic hot water temperature can
be carried out using the integrated electric heating
element, which is activated by the heat pump controller
as and when necessary.
$Q LQWHJUDWHG RYHUÀRZ YDOYH HQVXUHV WKDW WKH KHDW
pump does not switch to high-pressure fault if all
heating circuits are closed. The integrated vibration
isolators for the heating circuit and heat source
prevent structure-borne sound and vibrations from
EHLQJ WUDQVIHUUHG RQWR WKH ¿[HG SLSHV DQG WKHUHIRUH
into the building.

9
Subject to change without notice | 83056900kUK | ait-deutschland GmbH
Cooling
Cooling is integrated in type K units. Type H units can
EHUHWUR¿WWHGZLWKWKH³&RROLQJSDFNDJH´DFFHVVRULHV
The following options are possible for units with
cooling function (Æoperating manual of the heating
and heat pump controller):
ƔPassive cooling (without compressor)
ƔControl of the cooling function via the heating and
heat pump controller
ƔAutomatic switching between heating and cooling
mode
1HWZRUNFRQQHFWLRQRQWKHFRQWURO
The control can be connected to a computer or
QHWZRUN YLD D QHWZRUN FDEOH 7KH KHDWLQJ DQG KHDW
pump controller can then be controlled from the
FRPSXWHURUIURPWKHQHWZRUN
4 Operation and care
NOTE
The unit is operated via the control of
the heating and heat pump controller
(Æoperating manual of the heating and heat
pump controller).
4.1 Energy and environmentally
aware operation
The generally accepted requirements for energy-
aware and environmentally-aware operation of a
heating system also apply to use of a brine/water heat
pump. The most important measures include:
Ɣ 1RXQQHFHVVDULO\KLJKÀRZWHPSHUDWXUH
ƔNo unnecessarily high domestic hot water
temperature (note and follow local regulations)
ƔDo not open windows with gap /tilt open
(continuous ventilation), but instead open wide for
a short time (purge ventilation)
4.2 Maintenance
Wipe down the outside of the unit only using a damp
cloth or cloth with mild cleaning product (washing-up
liquid, neutral cleaning product). Do not use any harsh,
abrasive, acid or chlorine-based cleaning products.
5 Delivery, storage, transport
and installation
IMPORTANT
Damage to the housing and the unit components
due to heavy objects.
ŹDo not place any objects on the unit.
5.1 Scope of supply
NOTE
On delivery the accessories are enclosed in
WZRSDFNDJHVRQWKHKRXVLQJ
Ź &KHFN GHOLYHU\ LPPHGLDWHO\ DIWHU UHFHLSW IRU
outwardly visible damage and completeness.
ŹNotify supplier of any defects immediately.
7KHVHSDUDWHSDFNLQFOXGHGFRQWDLQV
Ɣ 6WLFNHUZLWKWKHXQLWQXPEHUIRUDWWDFKLQJWRSDJH
3 of this manual
Ɣ &RQWUROXQLWFRQVLVWLQJRIWKHFRQWUROZDOOEUDFNHW
DQGPDVNLQJSODWH
Ɣ6-mm anchors with screws (2x each) for wall-
mounting the control unit
ƔSafety valve, outdoor sensor
Ɣ IRU XQLWV XS WR N: FDSDFLW\ &RPSUHVVLRQ
¿WWLQJV[
Ɣ IRU XQLW YDULDQW . N: FDSDFLW\ DQG KLJKHU
Insulation material for venting valve on the cold
exchanger
Ɣ IRU XQLW YDULDQW . N: FDSDFLW\ DQG KLJKHU
Handle for cooling drain tap
ƔReplacement material after dismantling the
module box:
ƔInsulation hoses (2x)
ƔCable ties (4x)
ƔO-rings (6x)
Ɣ %DOOYDOYHVZLWK¿OOLQJDQGGUDLQGHYLFH
ƔScrews for the strain reliefs in the electrical switch
box
5.2 Storage
Ź :KHUH SRVVLEOH GR QRW XQSDFN WKH XQLW XQWLO
directly before installation.
ŹStore unit protected against:
ƔMoisture/damp
ƔFrost
ƔDust and dirt

10 Subject to change without notice | 83056900kUK | ait-deutschland GmbH
5.3 8QSDFNLQJDQGWUDQVSRUW
NOTE
The module box can be removed for transport
(Æ“Dismantle the module box”, page 11).
Notes on safe transport
The heating station and the module box are
heavy (Æ“Technical data / Scope of supply”, from
SDJH 7KHUH LV D ULVN RI LQMXULHV RU GDPDJH WR
property if the housing with the unit components falls
or overturns or if the module box falls.
ŹThe heating station and module box must be
transported and installed by several persons.
ŹSecure the heating station during transport. Carry
the module box by the carrying lugs.
The hydraulic connections are not designed for
mechanical loads.
ŹDo not lift or transport the unit by the hydraulic
connections.
If the module box is tilted by more than 45°, compressor
oil runs into the cooling circuit.
ŹDo not tilt the unit with installed module box by
more than 45°.
7UDQVSRUW WKH XQLW SUHIHUDEO\ ZLWK D SDOOHW WUXFN
alternatively with a handcart.
7UDQVSRUWZLWKDSDOOHWWUXFN
ŹTransport the unit to the place of installation
SDFNDJHGDQGVHFXUHGRQDZRRGHQSDOOHW
8QSDFNLQJ
NOTE
,IWKHXQLWLVQRWWUDQVSRUWHGE\DSDOOHWWUXFN
'RQRW OLIW Rႇ WKHSDOOHWXQWLODIWHU XQSDFNLQJ
and dismantling the housing panels.
1. 5HPRYH SODVWLF ¿OPV (QVXUH WKDW \RX GR QRW
damage the unit.
2. 'LVSRVH RI WKH PRXQWLQJ EUDFNHW WUDQVSRUW DQG
SDFNDJLQJPDWHULDOLQDQHQYLURQPHQWDOO\IULHQGO\
way according to local regulations.
3. 5HPRYH WKH ¿OP IURP WKH SODVWLF HOHPHQW RI WKH
front panel in the place of installation.
Dismantle housing panels for transport with
handcart or carrying the unit
98QLWLVXQSDFNHGƳ8QSDFNLQJ´SDJH
To avoid damage to the housing panels:
1. Undo 2 screws at the bottom of the front panel.
Lift up the front panel and put it down in safe
place.
2. Undo 3 screws at the right panel.
Lift up the side panel and put it down in safe place.
3. Undo 3 screws at the left panel.
Lift up the side panel and put it down in safe place.
8x
1.
2.
3
Transport with a handcart
NOTE
ƔIf transporting with a handcart the module
box must be pushed in.
Ɣ 7KH IROORZLQJ ¿JXUH ZLWK WKH KDQGFDUW
shows transporting the unit on its left-hand
side; it can also be transported on its right-
hand side.
9Housing panels are dismantled.

11
Subject to change without notice | 83056900kUK | ait-deutschland GmbH
To avoid damage: On a handcart, load the unit on its
side only.
Transport unit on the handcart.
Carrying the unit
9Housing panels are dismantled.
1. Dismantle module box (Æ“Dismantle the module
box”, page 11) and carry it by the support lugs
to the place of installation.
2. Carry the housing with the unit components
separately to the place of installation.
5.4 Installation
Installation room and space requirements
NOTE
Note and follow the local regulations and
standards regarding the installation room
and space requirements. The table shows
the regulations as per EN 378-1 relevant in
Germany.
Refrigerant Limit [kg/m³]
R 134a 0.25
R 404A 0.52
R 407C 0.31
R 410A 0.44
R 448A 0.39
R 454B 0.358
Æ“Technical data / Scope of supply”, from page 24
Minimum room volume = 5HIULJHUDQWFDSDFLW\>NJ@
/LPLW>NJPñ@
NOTE
If several heat pumps of the same type are
installed only one heat pump need to be
WDNHQLQWRDFFRXQW ,I VHYHUDOKHDWSXPSVRI
GLႇHUHQW W\SHV DUH LQVWDOOHG RQO\ WKH KHDW
pump with the largest refrigerant volume
QHHGVWREHWDNHQLQWRDFFRXQW
9Minimum volume corresponds to the require-
ments for the refrigerant used.
9Installation inside the building only.
9Installation room is dry and frost-free.
9Clearance dimensions are met (Æ“Installation
plans”, from page 32).
97KHVXUIDFHÀRRULVVXLWDEOHIRULQVWDOODWLRQRIWKH
unit:
Ɣlevel and horizontal
Ɣload-bearing capacity for the unit's weight
Aligning the unit
ŹAlign the unit horizontally and stably in the
installation site using the height-adjustable feet
and a spanner size SW 13. Adjustment range:
25 mm.
6 Installation and connection
6.1 Dismantle the module box
IMPORTANT
If the module box is tilted by more than 45°,
compressor oil runs into the cooling circuit.
ŹDo not tilt the module box by more than 45°.
NOTE
ƔIf necessary the module box can be
dismantled for easier transport of the unit
or for service reasons.
ƔSteps 1 to 5 are only required if the module
ER[LVFRQQHFWHGDQG¿OOHG
9Unit is safely disconnected from the power supply
DQG SURWHFWHG DJDLQVW EHLQJ VZLWFKHG EDFN RQ
again.

12 Subject to change without notice | 83056900kUK | ait-deutschland GmbH
1. Remove the front panel of the module
box (Æ“7.1 Remove the front panel of
the module box”, page 17).
2. &ORVHVKXWRႇYDOYHVWRWKHKHDWLQJFLUFXLW
3. 'UDLQ WKH XQLW YLD WKH ¿OOLQJ DQG GUDLQ WDS RI WKH
heating.
NOTE
The hose connectors are not part of the
scope of delivery with all KFE ball valves.
ŹUnit without cooling:
ŹUnit with cooling:
4. 8VHDVSDQQHUWRFORVHWKHVKXWRႇYDOYHVRIWKH
heat source (behind the covers).
5. 'UDLQ WKH XQLW YLD WKH ¿OOLQJ DQG GUDLQ WDS RI WKH
heat source.
ŹUnit without cooling:
ŹUnit with cooling:
6. Disconnect the electrical connections:
ƔDisconnect 2 white connectors ཰ at the bot-
tom of the electrical control cabinet. To do this,
release the lugs by pressing on the sides of
the connectors
Ɣ 3XOORXWWKHEODFNUHFWDQJXODUFRQQHFWRUཱ at
the top of the module box

13
Subject to change without notice | 83056900kUK | ait-deutschland GmbH
7. Remove the insulation on the hydraulic connec-
tions.
8. Remove 3 clips on the hydraulic connections.
9. Use spanner size SW 37 to unscrew the heating
ÀRZ
10. Disconnect the hydraulic connections; to do this,
push the pipes apart as far as necessary.
11. Remove the 2 side retaining screws.
12. 7RSURWHFWWKHÀRRUDQGPRYHWKHPRGXOHER[ི
more easily: place boards ཱི under it, e.g. from
WKHSDFNDJLQJPDWHULDO
1.
13. Lift and hold nut ཰RQWKHKHDWLQJÀRZ
14. Slowly and carefully pull out the module box by
the carrying lugs ཱ. Ensure that none of the
pipes are damaged
15. Pull out the module box completely and place it
on the boards.

14 Subject to change without notice | 83056900kUK | ait-deutschland GmbH
6.2 Install the module box
1. Place the module box carefully in the bottom of
the heating station and slowly and carefully push
it in.
Ɣ /LIWDQGKROGQXWRQWKHKHDWLQJÀRZ
ƔLift up pipes so that they do not get damaged
2. Attach the two side retaining screws.
3. Connect the hydraulic connections. At the
same time, replace O-rings on the heat pump
connections (ÆVHSDUDWHSDFNLQFOXGHG
4. Perform pressure test and insulate pipes with the
enclosed insulation hoses (ÆVHSDUDWHSDFN
5. Connect the electrical cables:
ƔPlug in 2 white connectors at the bottom of the
electrical control cabinet. Ensure that the con-
nectors move easily and the lugs latch into po-
sition
Ɣ 3OXJLQWKHEODFNUHFWDQJXODUFRQQHFWRUDWWKH
top of the module box
6.3 Install the hydraulic connections
NOTE
The safety valve that is integrated or included
in delivery has a tolerance of plus / minus
10% for the set pressure. If local regulations,
laws, standards or directives require a
smaller tolerance range, the safety valve
must be replaced on site with a safety valve
that meets the requirements.
IMPORTANT
Avoid open heating systems and / or heating sys-
WHPVWKDWDUHQRWR[\JHQGLႇXVLRQWLJKW
If this is not possible, a system separation must be
installed.
Depending on the dimensioning of the heat ex-
changer and the additionally required circulation
pump, the system separation worsens the energy
HႈFLHQF\RIWKHV\VWHP
IMPORTANT
Dirt and deposits in the (existing) hydraulic system
can cause damage to the heat pump.
ŹEnsure that a air / magnetic sludge separator is
installed in the heating circuit.
ŹRinse the hydraulic system thoroughly prior to es-
tablishing the hydraulic connection of the heat
pump.
NOTE
The heat source can be connected from the
top, right or left.
If the heat source will be connected at the side, the ca-
bles can be cut to a residual length of at least 250 mm
from the edge of the device (Æ“Dimensional dra-
wings“, page 29).
IMPORTANT
Damage to the copper pipes due to unacceptable
loading!
ŹSecure all connections against twisting.
9The heat source system has been installed in
DFFRUGDQFHZLWKWKHVSHFL¿FDWLRQVÆplanning &
design manual, dimensioned diagrams,
installation plans).
9Cross-sections and lengths of the pipes for the
heating circuit and heat source are dimensioned
adequately.
9The free pressure of the circulation pumps
produces at least the minimum throughput
required for the unit type (Æ“Technical data /
Scope of supply”, from page 24).
9The cables for the heat source and the heating
DUH¿[HGWRWKHZDOORUFHLOLQJYLDD¿[HGSRLQW
,QVWDOOWKHFRPSUHVVLRQ¿WWLQJVDQGEDOO
valves
IMPORTANT
/HDNVRUIUDFWXUHRIWKHXQLRQQXWGXHWRH[FHVVLYH
force!
1. &KHFNSLSHHQGVIRUVFUDWFKHVGLUWDQGGHIRUPD-
tion.
2. &KHFNSURSHUSRVLWLRQRIWKHFODPSLQJULQJRQWKH
¿WWLQJ
3. Push the pipe through the clamping ring up to the
OLPLWVWRSLQWKH¿WWLQJ
4. Tighten the union nut hand-tight and attach water-
SURRIPDUNLQJ
5. 7LJKWHQXQLRQQXWZLWKñ»๞URWDWLRQ
6. &KHFNFRQQHFWLRQIRUOHDNV

15
Subject to change without notice | 83056900kUK | ait-deutschland GmbH
,IWKHFRQQHFWLRQOHDNV
1. 8QGRFRQQHFWLRQDQGFKHFNSLSHIRUGDPDJH
2. Tighten the union nut hand-tight and retighten
ZLWKWKHRSHQHQGHGVSDQQHUZLWKï»๢WRï»๞WXUQDV
the clamping ring is already in a clamping posi-
tion.
Connect the unit to the heat source, domestic
water pipes and heating circuit
1. ,QVWDOO VKXWRႇ GHYLFHV DW WKH FRQQHFWLRQV RI WKH
heat source and heating circuit.
2. Insert the vent at the highest point of the heat
source and the heating circuit.
3. 5HFRPPHQGDWLRQ )LW D GLUW ¿OWHU ZLWK PHVK VL]H
0.9 mm onto the heat source inlet.
4. &RQQHFWWKHGRPHVWLFKRWZDWHUWDQNDFFRUGLQJWR
the local regulations.
5. Recommendation: To balance out pressure
ÀXFWXDWLRQV DQG ZDWHU KDPPHUV DQG DYRLG
unnecessary loss of water, install an expansion
YHVVHOZLWKWKURXJKÀRZ¿WWLQJ
6. Ensure that the operating overpressures
(Æ“Technical data / Scope of supply”, from
page 24) are not exceeded. Install pressure
reducer if necessary.
6.4 Connect the electrical cables
IMPORTANT
Irreparable damage to the compressor due to
ZURQJ URWDWLQJ ¿HOG (only applies to units with 400V
connection).
Ź (QVXUHWKDWWKHUHLVDFORFNZLVHURWDWLQJ¿HOGIRU
the compressor load infeed.
Basic information on the electrical connection
NOTE
Ensure that the unit is supplied with electricity
DWDOOWLPHV$IWHUZRUNLQJLQVLGHWKHXQLWDQG
attaching the unit panelling, switch the power
VXSSO\EDFNRQLPPHGLDWHO\
Ɣ 7KH VSHFL¿FDWLRQV RI WKH ORFDO HQHUJ\ VXSSO\
company may apply to electrical connections
ƔFit the power supply for the heat pump
ZLWK DQ DOOSROH PLQLDWXUH FLUFXLWEUHDNHU
with at least 3 mm contact spacing (per
IEC 60947-2)
ƔNote the level of the tripping current
(Æ“Technical data / Scope of supply”, from
page 24)
ƔComply with the electromagnetic compatibility
regulations (EMC regulations)
ƔLay unshielded power supply cables and shielded
FDEOHVEXVFDEOHVXႈFLHQWO\IDUDSDUW!PP
ƔMaximum line length: 30 m.
The LIN-bus cable must be a shielded cable of at
least 4 x 0.5 mm²
3XOOLQWKHFDEOHVDQGFRQGXFWRUVDQGPDNH
the connections
1. Strip the sheathing of all cables to the external
loads before laying in the cable duct of the control
box.
2. Open electrical switch box:
ƔUndo 2 screws at the top of the cover panel of
the electrical control box
Ɣ 8QKRRNFRYHUSDQHO

16 Subject to change without notice | 83056900kUK | ait-deutschland GmbH
3. Lay the control / sensor cables and unit supply
cable and connect:
ƔRoute cables through the reserve conduits ཰
and ཱ only, from above into the inside of the
unit
NOTE
7KH¿JXUHVKRZVDXQLWYDULDQWZLWKRXWFRROLQJ
4. Route cables from underneath through the cable
openings in the control box ི
5. Connect cables to the respective terminals
(Æ“Terminal diagrams”, from page 39).
6. Route all cables inserted into the switch box
through the strain reliefs and screw the strain
reliefs tight with the screws from the seperate
SDFN
7. &ORVH WKH VZLWFK ER[ E\ UHKRRNLQJ WKH FRYHU
panel and screw the cover panel tight.
2SHUDWHWKHFRQWUROOHUYLDD3&QHWZRUN
1. 'XULQJ LQVWDOODWLRQ OD\ D VKLHOGHG QHWZRUN FDEOH
(category 6) through the unit.
2. 3OXJ WKH 5- FRQQHFWRU RI WKH QHWZRUN FDEOH
LQWRWKHVRFNHWRIWKHFRQWUROXQLW཰.
NOTE
7KH QHWZRUN FDEOH FDQ EH UHWUR¿WWHG DW DQ\
time.
6.5 Installing the control panel
NOTE
The control can be inserted in a recess in the
front panel of the unit or can be installed on
the wall.
Insert the control in the unit and connect
1. ,IUHTXLUHG5HPRYHPDVNLQJ SODWH IURP WKH VORW
To do this, dismantle the front panel (Æ“Dismantle
housing panels for transport with handcart or
carrying the unit”, page 10), press the lugs
together and push out of the openings.
2. 5HPRYH¿OPIURPWKHSODVWLFHOHPHQWRIWKHIURQW
panel.
3. Position the control unit in the recess in the front
panel of the unit and press the latching lugs into
the openings.
4. Cut the cable to length generously so that the
front panel can be removed and placed to the side
of the unit. Do not cut the cable ties for strain relief
of the LIN bus cable at the electric control box.
Ɣ /,1EXVFDEOHDSSUR[PIURPWKH¿[LQJRI
the strain relief at the electrical control box
ƔAll other cables approx. 1.2 m

17
Subject to change without notice | 83056900kUK | ait-deutschland GmbH
5. Use cable ties (ÆVHSDUDWHSDFNWR¿[WKH/,1EXV
FDEOHWRDZHERIWKHPDVNLQJSODWHDURXQGFP
in front of the connector (strain relief).
200 mm
6. Push the cable through the opening in the front
panel of the unit from below and into the control.
7. Press the lugs of the control into the openings in
the front panel of the unit.
8. Insert cover in the free slot.
Mount the control on the wall and connect
IMPORTANT
0RXQWWKHZDOOEUDFNHWZLWKFRQWUROSDQHOonly ver-
tically on a wall!
1. 5HOHDVHWKHUHDUEUDFNHWIURPWKHFRQWURO
2. ,IYLVXDOO\XQDWWUDFWLYH&XWRႇWKHOXJVRQWKHUHDU
of the control (are only needed to insert in the
front panel).
3. 0DUN GULOOKROHVÆDimensional drawing “Wall-
PRXQWHGEUDFNHW´SDJH
4. ,I FDEOHV DUH IHG LQ IURP XQGHUQHDWK %UHDN RXW
the web at the bottom in the middle of the wall
EUDFNHW8VHVLGHFXWWHUVLIQHFHVVDU\
5. )L[ WKH ZDOOPRXQWHG EUDFNHW ཱ with 2 wall
plugs ཰ and 2 screws ི.
6. Feed in the cables from the wall (e.g. in-wall box)
or from below.
7. Route the LIN bus cable from the top right-hand
side at the rear from the heat pump and plug into
the control at the bottom.
8. 3XVKWKHFRQWURORQWRWKHZDOOPRXQWHGEUDFNHW
9. Push on cover. If applicable, position second
cover (accessories) on the second unused slot.
7 )OXVKLQJ¿OOLQJDQGYHQWLQJ
7.1 Remove the front panel of
the module box
ŹUnscrew the front panel of the module box.

18 Subject to change without notice | 83056900kUK | ait-deutschland GmbH
7.2 )LOOÀXVKDQGYHQWKHDWVRXUFH
Frost protection must be provided in the heat source.
Below are the approved antifreeze agents based on:
ƔMonopropylene glycol
ƔMonoethylene glycol
ƔEthanol
ƔMethanol
Antifreeze agents based on salt are not permitted.
ŹWhen selecting the antifreeze agent, it must be
ensured that it is compatible with the following
materials:
ƔBrass (CW602N and CW614N)
ƔStainless steel (AISI304, AISI316 and
AISI316L)
ƔCopper (Cu-DHP CW024A - EN1652)
ƔCast iron (EN-GJL-150)
ƔComposite (PES 30% GF)
ƔEPDM (ethylene propylene diene rubber)
Ɣ 37)(3RO\WHWUDÀXRURHWK\OHQH
Ɣ ).0ÀXRURUXEEHU
If an antifreeze agent is not compatible with one
of these materials, it may not be used.
Antifreeze agents from our product range are
safe with regard to our units and the accessories
purchased from us and guarantee compatibility
with the listed materials.
ŹPressure losses must be observed when selec-
ting the antifreeze agent.
ŹThe antifreeze agent that is selected and used
PXVWFRPSO\ ZLWKWKH VSHFL¿FDWLRQV DQGUHTXLUH-
ments of the local authorities and water manage-
ment authorities.
WARNING
0HWKDQRODQGHWKDQROFDQJLYHRႇÀDP-
mable and explosive gases. Therefore, the
safety provisions for the anti-freeze must
be noted and followed!
The hazard markings of all anti-freezes
used must be noted and the relevant safety
provisions must be followed.
Ź 0DNHVXUHWKDWWKHPL[LQJUDWLRRIZDWHUDQGDQWLI-
reeze agent meets the required minimum antifree-
ze temperature in the heat source.
Æ“Technical data / Scope of supply“, from
page 24
ŹFor operation of the heat source with water-
antifreeze mixture, ensure that the water used
IXO¿OV WKH TXDOLW\ VSHFL¿FDWLRQV RI WKH KHDWLQJ
water side.
Æ“Heating water quality”, page 19
9Drain pipe of the safety valve is connected.
9Room is ventilated.
1. Flush the heat source system thoroughly.
2. Mix antifreeze with water thoroughly with the
required ratio, before adding to the heat source.
3. &KHFN WKH FRQFHQWUDWLRQ RI WKH ZDWHUDQWLIUHH]H
mixture.
4. Fill the heat source with the water-antifreeze
mixture.
Fill until the system is air-free.
5. Fill the unit via the ball valves in the module box.
7.3 Vent the circulation pump of
the heat source
9The front panel of the module box is unscrewed.
NOTE
7KH¿JXUHVKRZVWKHXQLWYDULDQWZLWKFRROLQJ
In the unit variant without cooling the circula-
tion pump is located in the same place.
1. Place vessel for collecting discharging liquid
under the outlet.
2. 8QGRGHÀDWLQJVFUHZ཰) in the middle of the cir-
culation pump of the heat source.

19
Subject to change without notice | 83056900kUK | ait-deutschland GmbH
NOTE
The hose connectors are not part of the
scope of delivery with all KFE ball valves.
3. Wait until liquid is discharged uniformly.
4. 6FUHZ WKH GHÀDWLQJ VFUHZ ཰) of the circulation
SXPSRIWKHKHDWVRXUFHEDFNRQWLJKWO\
5. Screw the front panel of the module box.
6. Dispose of collected liquid according to the local
regulations.
7. Set system pressure to 1 bar.
7.4 )OXVKDQG¿OOWKHKHDWLQJDQG
domestic hot water charging
circuit
Heating water quality
NOTE
For detailed information refer, among other
things, to the VDI Guidelines 2035 “Vermei-
dung von Schäden in Warmwasserheizanla-
gen” (preventing damage in hot water heat-
ing systems).
1. Ensure that the ph-value of the heating water is
between 8.2 – 10, for aluminium materials be-
tween 8.2 – 9.
Ideally, the pH value should already be in the re-
TXLUHGUDQJHDIWHU¿OOLQJ$IWHUZHHNVDWWKHODW-
est, it must have adjusted to the required range.
2. (QVXUHWKDWWKHHOHFWULFDOFRQGXFWLYLW\LVȝ6FP
NOTE
If the required water quality is not achieved,
consult a company specialising in the treat-
ment of heating water.
3. Fill the system with deionised heating water
(VE water) or with water corresponding to the VDI
2035 norm only (low-salt operation of the system).
Advantages of low-salt operation:
ƔLow corrosion-promoting properties
ƔNo formation of mineral scale
ƔIdeal for closed heating circuits
4. Keep a system log for hot water heating systems
in which relevant planning data and the water
quality are entered (VDI 2035).
9Drain pipe of the safety valve is connected.
9The front panel of the module box is unscrewed.
ŹEnsure that the set pressure of the safety valve is
not exceeded.
1. Pull the U-clip ཱRႇWKHÀRRURIWKHYDOYHPR-
tor ཰.
2. 3XOOWKHYDOYHPRWRUFDUHIXOO\XSZDUGVDQGRႇWKH
3-way changeover valve ི.
3. Turn the spindle of the 3-way changeover valve so
that the rounded side of the spindle points in the
GLUHFWLRQ RI PDUNLQJ $ RI WKH FRQQHFWLRQV RI WKH
3-way changeover valve.
AB
4. Flush the domestic hot water charging circuit for
approx. 1 minute.
5. Turn the spindle so that the rounded side of the
VSLQGOHSRLQWVLQWKHGLUHFWLRQRIPDUNLQJ%RIWKH
connections of the 3-way changeover valve.
6. Flush heating circuit thoroughly, until no more air
is discharged.
7. Position the valve motor ཰ on the 3-way change-
over valve ི.

20 Subject to change without notice | 83056900kUK | ait-deutschland GmbH
8. Insert the U-clip ཱLQWRWKHÀRRURIWKHYDOYHPR-
tor.
9. Ensure that the U-clip has latched into position
correctly:
9Valve motor sits securely on the 3-way changeo-
ver valve.
9Both prongs of the U-clip sit on the lug.
9The tips of the U-clip are visible by approx. 2 mm
QRWVLJQL¿FDQWO\PRUH!).
10. Screw the front panel of the module box.
7.5 )OXVK¿OODQGYHQW
WKHGRPHVWLFKRWZDWHUWDQN
9Drain pipe of the safety valve is connected.
ŹEnsure that the set pressure of the safety valve is
not exceeded.
1. Open the domestic water inlet valve at the
GRPHVWLFKRWZDWHUWDQN
2. Open taps for domestic hot water.
3. )OXVK WKH GRPHVWLF KRW ZDWHU WDQN XQWLO QR PRUH
air discharges from the valves at the taps.
4. Close taps for domestic hot water.
8 Insulate hydraulic connections
1. Insulate heating circuit, heat source and domestic
water pipes according to the local regulations.
2. 2SHQVKXWRႇGHYLFHV
3. 3HUIRUPDSUHVVXUHWHVWDQGFKHFNIRUOHDNV
4. Insulate the internal piping of the module box with
WKH LQVXODWLRQ PDWHULDO IURP WKH VHSDUDWH SDFN
included.
5. Insulate external piping on site.
6. ,QVXODWHDOOFRQQHFWLRQV¿WWLQJVDQGSLSHV
7. ,QVXODWHKHDWVRXUFHVRWKDWLWLVYDSRXUGLႇXVLRQ
tight.
8. Insulate the heating circuit of units with cooling
YDSRXUGLႇXVLRQWLJKWWRR
9 6HWWKHRYHUÀRZYDOYH
NOTE
ƔThe activities in this section are only nec-
HVVDU\IRULQOLQHWDQNLQWHJUDWLRQ
Ɣ &RPSOHWHWKHZRUNVWHSVTXLFNO\RWKHUZLVH
the maximum return temperature can be
exceeded and the heat pump switches to
high-pressure fault.
Ɣ 7XUQ WKH DGMXVWLQJ NQRE DW WKH RYHUÀRZ
valve to the right to increase the tempera-
WXUHGLႇHUHQFHWKHWHPSHUDWXUHGURSWXUQ
it to the left to reduce it.
9System is running in heating mode (ideally in cold
condition).
The IBN assistant already provides the option, in the
HYHQWRIWKHLQWHJUDWLRQRIWKHVWRUDJHWDQNLQVHULHVWR
DGMXVWWKH RYHUÀRZYDOYHDFFRUGLQJ WRWRWKH K\GUDX-
lic system.