alphainnoTec SW 232H3 User manual

www.alpha-innotec.com
UK
Brine/Water heat pumps
Indoor installation
83057800eUK
OPERATING MANUAL
SW 232H3 – SW 302H3

2Subject to change without notice | 83057800eUK | ait-deutschland GmbH
Table of contents
1 About this operating manual ...................... 3
1.1 Validity....................................................... 3
1.2 Reference documents............................... 3
1.3 Symbolsandidenticationmarkings ........ 3
1.4 Contact...................................................... 4
2 Safety ............................................................... 4
2.1 Proper use................................................. 4
2.2 Personnelqualications ............................ 4
2.3 Personal protective equipment ................. 4
2.4 Residualrisks............................................ 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....................................... 8
4.1 Energy and environmentally aware
operation ................................................... 8
4.2 Maintenance.............................................. 8
5 Delivery, storage, transport and
installation ....................................................... 9
5.1 Scope of supply ........................................ 9
5.2 Storage...................................................... 9
5.3 Unpackingandtransport........................... 9
5.4 Installation................................................11
6 Installation and connection........................11
6.1 Dismantle the module box .......................11
6.2 Install the module box ............................. 13
6.3 Install the hydraulic connections ............. 13
6.4 Connect the electrical cables.................. 14
6.5 Installing the control panel ...................... 15
7 Flushing,llingandventing ...................... 16
7.1 Remove the front panel of the module box .
16
7.2 Fill,ushandventheatsource ............... 16
7.3 Flushandlltheheatingand
domestic hot water charging circuit......... 17
8 Insulate hydraulic connections ................ 17
9 Commissioning ............................................ 18
10 Maintenance................................................. 18
10.1 Basic principles ....................................... 18
10.2 Maintenance as required ........................ 18
10.3 Cleanandushtheevaporatorand
condenser ............................................... 18
10.4 Yearly maintenance................................. 18
11 Faults.............................................................. 19
12 Dismantling and Disposal ......................... 19
12.1 Dismantling ............................................. 19
12.2 Disposal and Recycling........................... 19
Technical data / Scope of supply............ 20
SW 232H3 – SW 262H3................................... 20
SW 302H3........................................................ 21
Performance curves................................... 22
SW 232H3 ........................................................ 22
SW 262H3........................................................ 23
SW 302H3........................................................ 24
SW 232H3 – SW 302H3 .................................. 26
Control unit....................................................... 27
Wall-mountedbracket ...................................... 27
Installation plans.......................................... 28
Installation plan 1 ............................................. 28
Installation plan 2 ............................................. 29
Installation plan 3 ............................................. 30
Hydraulic integration................................... 31
SW 232H3 – SW 302H3 .................................. 31
withseparatebu󰀨ertank.................................. 32
Keys hydraulic integration ................................ 33
Terminal diagram ........................................ 34
Circuit diagrams........................................... 35

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Subject to change without notice | 83057800eUK | ait-deutschland GmbH
1 About this operating manual
This operating manual is part of the unit.
► Before working on or with the unit read the
operating manual carefully and follow it for all
activities at all times, especially the warnings and
safety instructions.
►Keep the operating manual to hand at the unit and
hand over to the new owner if the unit changes
hands.
►If you have any questions or anything is unclear,
ask the local partner of the manufacturer or the
factory's customer service.
►Note and follow all reference documents.
1.1 Validity
Thisoperatingmanualreferssolelytotheunitidentied
by the nameplate and unit sticker (“Nameplate”,
page7and“Unitsticker”,page3).
1.2 Reference documents
The following documents contain additional information
to this operating manual:
●Planning & design manual, hydraulic integration
●Operating manual of the heating and heat pump
controller
●Brief description of the heat pump controller
●Operating manual of the expansion board
(accessories)
● Logbook, if included with this unit by the
manufacturer
Unitsticker
The unit sticker contains important information for
contact with the manufacturer or the local partner of
the manufacturer.
► Stickon theunitsticker(barcodewithserial and
productnumber)here.
1.3 Symbolsandidentication
markings
Identicationofwarnings
Symbol Meaning
Safety-relevant information.
Warning of physical injuries.
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
Informationforqualiedpersonnel
Information for the owner/operator
Requirement for action
Single step action prompt
1., 2., 3., …Numbered step within a multi-step
action prompt. Keep to the given
order.
Additional information, e.g. a tip on
makingworkeasier,information on
standards
Reference to further information
elsewhere in the operating manual
or in another document
●Listing

4Subject to change without notice | 83057800eUK | 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
anytimeandiskeptup-to-date:
●www.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 Proper use
The unit is designed for household use and is solely
intended for the following functions:
●Heating
● Domestic water heating (optional, with
accessories)
● Cooling(optional,withaccessories)
►Proper use includes complying with the operating
conditions(“Technical data / Scope of supply”,
from page20) and the operating manual and
noting and following the reference documents.
►When using the local regulations note: laws,
standards, guidelines, directives.
All other uses of the unit are not as intended.
2.2 Personnelqualications
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-
atpumpcontrolandworkontheproductwhichisin-
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.
Theproductmayonlybeopenedbyqualiedpersonnel.
All instructional information in this operating manual is
solelydirectedatqualied,skilledpersonnel.
Only qualied, skilled personnel is able to carry out
theworkontheunitsafetyandcorrectly.Interference
by unqualied personnel can cause life-threatening
injuries and damage to property.
►Ensure that the personnel is familiar with the local
regulations, especially those on safe and hazard-
awareworking.
► Ensurethatthepersonnelarequaliedtohandle
(primary)refrigerant.
● Workontherefrigeratingcircuitmayonlybecar-
ried out by qualied personnel with appropriate
qualicationsforrefrigerationsysteminstallation.
● Workontheelectricsandelectronicsmayonlybe
carried out by electrical technicians.
● Any other work on the system may only be car-
ried out by qualied personnel (heating installer,
plumbinginstaller).
During the warranty and guarantee period, service
workandrepairsmayonlybecarriedoutbypersonnel
authorised by the manufacturer.
2.3 Personal protective equipment
Duringtransportandworkontheunit,thereisariskof
cuts due to the sharp edges of the unit.
►Wear cut-resistant protective gloves.
Duringtransportandworkontheunit,thereisariskof
foot injuries.
►Wear safety shoes.
Whenworkingonliquid-conveyinglines,thereisarisk
ofinjurytotheeyesduetoleakageofliquids.
►Wear safety goggles.
2.4 Residualrisks
Electricshock
Components in the unit are live with life-threatening
voltage.Beforeworkingontheunit:
►Disconnect unit from power supply.
► Protectunitagainstbeingswitchedbackonagain.

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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-
semblywork:
►Restore earthing connections to their original con-
ditionaftercompletionofthework.
Injuries caused by high temperatures
► Beforeworkingontheunit,letitcooldown.
Safety instructions and warning symbols
►Observe the safety instructions and warning sym-
bolsonthepackagingandonandintheunit.
Injuryduetoammableliquidsandpotentially
explosive atmospheres
Constituents of antifreeze mixtures, e.g. ethanol,
methanol,arehighlyammableandformanexplosive
atmosphere:
►mix antifreeze in well-ventilated rooms.
► Note the hazardous substance markings and
comply with the relevant safety regulations.
Injuries and environmental damage due to
refrigerant
The unit contains harmful and environmentally
dangerousrefrigerant.Ifrefrigerantleaksfromtheunit:
1. Switcho󰀨unit.
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. antifreeze, refrigerant, compressor oil)
damages the environment:
►Collect substances safely.
►Dispose of the substances in an environmental-
ly-friendly manner according to the local regulations.
2.6 Avoid damage to property
Improper action
Requirements for minimum scale and corrosion
damage in hot water heating systems:
●Proper planning, design and start-up
●Closed system with regard to corrosion
●Integration of adequately dimensioned pressure
retention
● Use of deionised heating water (VE water) or
water corresponding to the VDI 2035 norm
●Regular servicing and maintenance
If a system is not planned, designed, started up and
operated according to the given requirements, there is
ariskthatthefollowingdamageandfaultswilloccur:
●Malfunctions and the failure of components, e.g.
pumps, valves
● Internal and external leaks, e.g. from heat
exchangers
●Cross-section reduction and blockages in
components, e.g. heat exchanger, pipes, pumps
●Material fatigue
●Gas bubbles and gas cushion formation
(cavitation)
● Negativee󰀨ectonheattransfer,e.g.formationof
coatings, deposits, and associated noises, e.g.
boilingnoises,ownoises
►Note and follow the information in this operating
manualforallworkonandwiththeunit.
Unsuitablequalityofthellandmake-up
water in the heating circuit
The e󰀩ciency of the system and the life of the heat
generator and the heating components depend
decisively on the quality of the heating water.
If the system is lled with untreated drinking water,
calcium and magnesium precipitate as mineral scale.
Limescale deposits accumulate on the heat transfer
surfaces of the heating. E󰀩ciency is reduced and
energy costs increase. In extreme cases, the heat
exchangers will be damaged.
►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).

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Unsuitable quality of the water or the water-
antifreeze mixture in the heat source
► Useofpurewaterinaat-platecollectororabore-
holeheatexchanger(verticalcollector)isnotper-
mitted
►For operation of the heat source with water or
water-antifreeze mixture, ensure that the water
usedfullsthequalityspecicationsoftheheating
water side.
 “7Flushing,llingandventing“,frompage16
Using groundwater
►If using groundwater install an intermediate
exchanger.
3 Description
3.1 Layout
NOTE
This section essentially names the
components relevant for fullling the tasks
described in this operating manual.
Housing with unit components
1 Electrical switchbox
2 Brine circulation pump
The module box is inserted in the bottom of the
housing.

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Nameplate
Nameplates are attached to the following places on
the unit:
●on the right-hand outer panel, at the top
●on the rear panel, at the top inside
The Nameplate contains the following information at
the top:
●Unit type, product number
●Serial number, unit index
The Nameplate also contains an overview of the most
important technical data.
Module box
1 Compressor
2 Evaporator
3 Vibrationisolator(4x)
4 Liftinglug(4x)
5 Condenser
6 Heatingllinganddraintap
7 Heatsourcellinganddraintap
NOTE
The hose connectors are not part of the
scope of delivery with all KFE ball valves.
Control unit
1 Control panel
2 PushupapupstreamofUSBconnection(for
qualiedpersonnelforsoftwareupdatesand
fordatalogging)
3 Wall-mountedbracket(onlynecessaryfor
wall-mountedinstallation)
Underside of the control panel
13 42
1 Connection room control unit
RBERS485(accessory)
2 RJ45connectioncabletothenetworklink
3 Connection LIN bus to the regulator board
4 RJ45 connection not assigned

8Subject to change without notice | 83057800eUK | ait-deutschland GmbH
3.2 Accessories
The following accessories are available for the unit
through the manufacturer's local partner:
● Additionalmaskingplateforthefrontcoverpanel,
if the control is mounted on the wall
● Domestichotwatertank
●Changeover valve, domestic hot water
●Air / magnetic sludge separator
●Room thermostat for switching the cooling
function(ifincluded)
●Dew point monitor for protecting a system with
cooling function at low ow temperatures (if
available)
●Expansion board
● “Coolingpackage”foruseofthecoolingfunction
●for units without cooling: Pump assemblies for
separatestoragetankandin-linetankintegration
(heatingcircuit)
● Heatingcircuitsafetypackage
● Heatsourcecircuitsafetypackage
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
gaseousrefrigerantwithhightemperatureisliqueed
(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.
The heated heating water can be used for the domestic
hot water charging or for the building heating. The
temperatures required and use are controlled by the
heat pump controller.
The integrated vibration isolators for the heating circuit
and heat source prevent structure-borne sound and
vibrationsfrombeingtransferredontothexedpipes
and therefore into the building.
Cooling
Units can be retrotted with the “Cooling package”
accessories. The following options are possible for
unitswithcoolingfunction(operating manual of the
heatingandheatpumpcontroller):
● Passivecooling(withoutcompressor)
●Control of the cooling function via the heating and
heat pump controller
●Automatic switching between heating and cooling
mode
Networkconnectiononthecontrol
The control can be connected to a computer or
network via a network cable. The heating and heat
pump controller can then be controlled from the
computerorfromthenetwork.
4 Operation and care
NOTE
The unit is operated via the control of
the heating and heat pump controller
(operating 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:
● Nounnecessarilyhighowtemperature
●No unnecessarily high domestic hot water
temperature(noteandfollowlocalregulations)
●Do 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.

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5 Delivery, storage, transport
and installation
IMPORTANT
Damage to the housing and the unit components
due to heavy objects.
►Do not place any objects on the unit.
5.1 Scope of supply
NOTE
On delivery the accessories are enclosed in
twopackagesonthehousing.
► Check delivery immediately after receipt for
outwardly visible damage and completeness.
►Notify supplier of any defects immediately.
Theseparatepackincludedcontains:
● Stickerwiththeunitnumberforattachingtopage
3 of this manual
● Controlunit,consistingofthecontrol,wallbracket
andmaskingplate
● 6-mm anchors with screws (2x each) for wall-
mounting the control unit
●Outdoor sensor
●Replacement material after dismantling the
module box:
● Insulationhoses(2x)
● Cableties(4x)
● O-rings(8x)
5.2 Storage
► Where possible do not unpack the unit until
directly before installation.
►Store unit protected against:
●Moisture/damp
●Frost
●Dust and dirt
5.3 Unpackingandtransport
NOTE
The module box can be removed for transport
(“Dismantlethemodulebox”,page11).
Notes on safe transport
The housing with the unit components and the module
boxareheavy(“Technical data / Scope of supply”,
from page20). There is a risk of injuries or damage
to property if the housing with the unit components
falls or overturns or if the module box falls.
►The housing with the unit components and
module box must be transported and installed by
several persons.
►Secure the housing with the unit components
during transport. Carry the module box by the
carrying lugs.
The hydraulic connections are not designed for
mechanical loads.
►Do 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.
►Do not tilt the unit with installed module box by
more than 45°.
Transport the unit preferably with a pallet truck,
alternatively with a handcart.
Transportwithapallettruck
►Transport the unit to the place of installation
packagedandsecuredonawoodenpallet.
Unpacking
NOTE
Iftheunitisnottransportedbyapallettruck:
Donotlifto󰀨thepalletuntil afterunpacking
and dismantling the housing panels.
1. Remove plastic lms. Ensure that you do not
damage the unit.
2. Dispose of the mounting bracket, transport and
packagingmaterialinanenvironmentallyfriendly
way according to local regulations.
3. Remove the lm from the plastic element of the
front panel in the place of installation.

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Dismantle housing panels for transport with
handcart or carrying the unit
Unitisunpacked(“Unpacking”,page9).
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 down in safe place.
2. Undo 3 screws at the right panel.
Tilt the panel forwards and push it towards the
rear.
3. Undo 3 screws at the left panel.
Tilt the panel forwards and push it towards the
rear.
8x
3.
1.
2.
Transport with a handcart
NOTE
●If transporting with a handcart the module
box must be pushed in.
● The following gure with the handcart
shows transporting the unit on its left-hand
side; it can also be transported on its right-
hand side.
Housing panels are dismantled.
To avoid damage: On a handcart, load the unit on its
side only.
Transport unit on the handcart.
Carrying the unit
Housing panels are dismantled.
1. Dismantlemodulebox(“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.

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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
“Technical data / Scope of supply”, from page 20
Minimum room volume = Refrigerantcapacity[kg]
Limit[kg/m³]
NOTE
If several heat pumps of the same type are
installed only one heat pump need to be
takenintoaccount. If several heatpumpsof
di󰀨erent types are installed, only the heat
pump with the largest refrigerant volume
needstobetakenintoaccount.
Minimum volume corresponds to the require-
ments for the refrigerant used.
Installation inside the building only.
Installation room is dry and frost-free.
Clearance dimensions are met (“Installation
plans”,frompage28).
Thesurface/oorissuitableforinstallationofthe
unit:
●level and horizontal
●load-bearing capacity for the unit's weight
Aligning the unit
►Align 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.
►Do not tilt the module box by more than 45°.
NOTE
●If necessary the module box can be
dismantled for easier transport of the unit
or for service reasons.
●Steps 1 to 5 are only required if the module
boxisconnectedandlled.
Unit is safely disconnected from the power supply
and protected against being switched back on
again.
1. Removethefrontpanelofthemodulebox(“7.1
Remove the front panel of the module box”,
page16).
2. Closeshut-o󰀨valvestotheheatingcircuit.
3. Drain the unit via the lling and drain tap of the
heating (①).
NOTE
The hose connectors are not part of the
scope of delivery with all KFE ball valves.
4. Closeshut-o󰀨valvestotheheatsource.
5. Drain the unit via the lling and drain tap of the
heat source (②).

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6. Disconnect the electrical connections:
●Disconnect connector (①) at the bottom of the
electrical control cabinet.
●Disconnect connector (②) at the bottom of
the electrical control cabinet. To do this,
remove the control cabinet cover and undo the
connector from the inside.
● Pullouttheblackrectangularconnector(③) at
the top of the module box.
7. Remove the insulation on the hydraulic connec-
tions.
8. Remove 4 clips on the hydraulic connections.
9. Disconnect the hydraulic connections; to do this,
push the pipes apart as far as necessary.
10. Remove the 2 side retaining screws.
11. Toprotecttheoorandmovethemodulebox(②)
more easily: place boards (③) under it, e.g. from
thepackagingmaterial.
12. Slowly and carefully pull out the module box by
the carrying lugs (①). Ensure that none of the
pipes are damaged

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13. Pull out the module box completely and place it
on the boards.
6.2 Install the module box
1. Place the module box carefully in the bottom of
the housing and slowly and carefully push it in.
●Lift 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(separatepackincluded).
4. Perform pressure test and insulate pipes with the
enclosedinsulationhoses(separatepack).
5. Connect the electrical cables:
●Plug both connectors into the electrical control
cabinet. Ensure that the connectors move eas-
ily and the lugs latch into position.
● Plugintheblackrectangularconnectoratthe
top of the module box.
6.3 Install the hydraulic connections
IMPORTANT
Avoid open heating systems and / or heating sys-
temsthatarenotoxygendi󰀨usion-tight.
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
e󰀩ciencyofthesystem.
IMPORTANT
Dirtanddepositsinthe(existing)hydraulicsystem
can cause damage to the heat pump.
►Ensure that a air / magnetic sludge separator is
installed in the heating circuit.
►Rinse the hydraulic system thoroughly prior to es-
tablishing the hydraulic connection of the heat
pump.
IMPORTANT
Damage to the copper pipes due to unacceptable
loading!
►Secure all connections against twisting.
The heat source system has been installed in
accordancewiththespecications(planning &
design manual, dimensioned diagrams,
installationplans).
Cross-sections and lengths of the pipes for the
heating circuit and heat source are dimensioned
adequately.
The free pressure of the circulation pumps
produces at least the minimum throughput
required for the unit type (“Technical data /
Scopeofsupply”,frompage20).
The pipes for the heating circuit and for the heat
sourcearexedto thewallor ceilingviaaxed
point.
Connect the unit to the heat source and
heating circuit
1. Install shut-o󰀨 devices at the connections of the
heat source and heating circuit.
2. Insert the vent at the highest point of the heat
source and the heating circuit.
3. Recommendation: Fit a dirt lter with mesh size
0.9 mm onto the heat source inlet.
4. Ensure that the operating overpressures
(“Technical data / Scope of supply”, from
page20)arenotexceeded.

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6.4 Connect the electrical cables
IMPORTANT
Irreparable damage to the compressor due to
wrongrotatingeld!
► Ensurethatthereisaclockwiserotatingeldfor
the compressor load infeed.
Basic information on the electrical connection
NOTE
Ensure that the unit is supplied with electricity
atalltimes.Afterworkinginsidetheunitand
attaching the unit panelling, switch the power
supplybackonimmediately.
● The specications of the local energy supply
company may apply to electrical connections
●Fit the power supply for the heat pump
with an all-pole miniature circuit-breaker
with at least 3mm contact spacing (per
IEC60947-2)
●Note the level of the tripping current
( “Technical data / Scope of supply”, from
page20)
●Comply with the electromagnetic compatibility
regulations(EMCregulations)
●Lay unshielded power supply cables and
shielded cables (bus cable) su󰀩ciently far apart
(>100mm).
●Maximum line length: 30 m.
The LIN-bus cable must be a shielded cable of at
least 4 x 0.5 mm²
Pullinthecablesandconductorsandmake
the connections
1. Strip the sheathing of all cables to the external
loads before laying in the cable duct of the control
box.
2. Dismantle the cover of the electrical control box:
undo both screws at the front on the switchbox
cover,lifto󰀨thecoverupwardsandfromtherear.
1 Mains voltage and sensor
2 LIN-bus
3. Feed the control/sensor cables and unit supply
cable into the housing from the rear.
4. Route cables from the rear through the cable
openings in the control box.
5. Connect cables to the respective terminals
(“Terminaldiagram”,page34).
OperatethecontrollerviaaPC/network
1. During installation lay a shielded network cable
(category6)throughtheunit.
2. Plug the RJ-45 connector of the network cable
intothesocketofthecontrolunit(①).
1
NOTE
The network cable can be retrotted at any
time.

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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. If required:Removemasking platefrom the slot.
Todothis,dismantlethefrontpanel(“Dismantle
housing panels for transport with handcart or
carrying the unit”, page10), press the lugs
together and push out of the openings.
2. Removelmfromtheplasticelementofthefront
panel.
3. Position the control in the recess in the front unit
panel.
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.
● LINbuscableapprox.1.1mfromthexingof
the strain relief at the electrical control box
●All other cables approx. 1.2 m
5. Usecableties(separatepack)toxtheLINbus
cabletoawebofthemaskingplatearound20cm
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.
Mount the control on the wall and connect
IMPORTANT
Mountthewallbracketwithcontrolpanelonly ver-
tically on a wall!
1. Releasetherearbracketfromthecontrol.
2. Ifvisuallyunattractive:Cuto󰀨thelugsontherear
of the control (are only needed to insert in the
frontpanel).
3. Mark 2 drillholes (Dimensional drawing “Wall-
mountedbracket”,page27).
4. If cables are fed in from underneath: Break out
the web at the bottom in the middle of the wall
bracket.Useside-cuttersifnecessary.
5. Fix the wall-mounted bracket (②) with 2 wall
plugs (①) and 2 screws (③).

16 Subject to change without notice | 83057800eUK | ait-deutschland GmbH
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. Pushthecontrolontothewall-mountedbracket.
9. Put on the masking plate if applicable
(accessories).
7 Flushing,llingandventing
7.1 Remove the front panel of the
module box
►Unscrew the front panel of the module box.
7. 2 Fill,ushandventheatsource
Frost protection must be provided in the heat source.
Below are the approved antifreeze agents based on:
●Monopropylene glycol
●Monoethylene glycol
●Ethanol
●Methanol
Antifreeze agents based on salt are not permitted.
►When selecting the antifreeze agent, it must be
ensured that it is compatible with the following
materials:
● Brass(CW602NandCW614N)
● Stainless steel (AISI304, AISI316 and
AISI316L)
● Copper(Cu-DHPCW024A-EN1652)
● Castiron(EN-GJL-150)
● Composite(PES30%GF)
● EPDM(ethylenepropylenedienerubber)
●PTFE(Polytetrauoroethylene)
● FKM(uororubber)
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.
►Pressure losses must be observed when selec-
ting the antifreeze agent.
►The antifreeze agent that is selected and used
mustcomply with the specications and require-
ments of the local authorities and water manage-
ment authorities.
WARNING
Methanol and ethanol can give o󰀨 am-
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.
► Makesurethatthemixingratioofwaterandantif-
reeze agent meets the required minimum antifree-
ze temperature in the heat source.
 “Technical data / Scope of supply“, from pa-
ge 20
►For operation of the heat source with water or
water-antifreeze mixture, ensure that the water
usedfullsthequalityspecicationsoftheheating
water side.
 “Heating water quality“, page 17
Drain pipe of the safety valve is connected.
Room is ventilated.

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1. Flush the heat source system thoroughly.
2. Mix antifreeze with water thoroughly with the
required ratio, before adding to the heat source.
3. Check the concentration of the water-antifreeze
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 Flushandlltheheatingand
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-
quiredrangeafterlling.After6weeksatthelat-
est, it must have adjusted to the required range.
2. Ensure that the electrical conductivity is
<100μS/cm.
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:
●Low corrosion-promoting properties
●No formation of mineral scale
●Ideal 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).
Drain pipe of the safety valve is connected.
The front panel of the module box is unscrewed.
►Ensure that the set pressure of the safety valve is
not exceeded.
1. If installed: Flush the domestic hot water charging
circuit for approx. 1 minute.
2. Flush heating circuit thoroughly, until no more air
is discharged.
3. Unscrew the front panel of the module box.
8 Insulate hydraulic connections
1. Insulate heating circuit and heat source according
to the local regulations.
2. Openshut-o󰀨devices.
3. Performapressuretestandcheckforleaks.
4. Insulate the internal piping of the module box with
the insulation material from the separate pack
included.
5. Insulate external piping on site.
6. Insulateallconnections,ttingsandpipes.
7. Insulateheatsourcesothatitisvapour-di󰀨usion
tight.
8. Insulate the heating circuit of units with cooling
vapour-di󰀨usiontighttoo.

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9 Commissioning
The relevant planning and design data of the system
is documented in full
The relevant energy supply company has been
notiedoftheoperationoftheheatpumpsystem
The system is air-free
Installation check using the rough checklist has
been completed successfully
Clockwise rotating eld is present for the load
supply at the compressor
The system is installed and mounted according to
this operation manual
The electrical installation has been carried out
properly according to this operation manual and
the local regulations
The power supply for the heat pump is equipped
withanall-polecircuit-breakerwithatleast3mm
contactspacing(IEC60947-2)
The tripping current is complied with
The heating circuit and the heat source have been
ushedandvented
Frost protection of the heat source meets the re-
quirements
“Technical data / Scope of supply“, from
page 20
Allshut-o󰀨devicesoftheheatingcircuitareopen
The pipe systems and components of the system
are tight
1. Carefully ll inandsignthenotice ofcompletion
for the heat pump systems.
2. In Germany: Send the notice of completion
for heat pump systems and rough checklist to
the manufacturer’s factory customer service
department.
In other countries: Send the notice of completion
forheatpumpsystemsandroughchecklisttothe
manufacturer’s local partner.
3. Arrange for the heat pump system to be com-
missioned by the manufacturer’s authorised after
sales service for a fee.
10 Maintenance
NOTE
We recommend that you sign a maintenance
agreement with an accredited heating
company.
10.1 Basic principles
The cooling circuit of the heat pump requires no
regular maintenance.
Local regulations among other things, require leak
checksbeforehandand/orforalogbooktobekeptfor
certain heat pumps.
►Ensure compliance with local regulations with
regardtothespecicheatpumpsystem.
10.2 Maintenance as required
► Checking and cleaning the components of the
heating circuit and the heat source, e.g. valves,
expansion vessels, circulation pumps, lters, dirt
traps.
10.3 Cleanandushtheevaporator
and condenser
1. Clean and ush the evaporator and condenser
according to the manufacturer’s instructions.
2. Afterushingtheevaporatorandcondenserwith
chemical cleaning agent: neutralise any residues
andushthecondenserthoroughlywithwater.
10.4 Yearly maintenance
►Determine the quality of the heating water by anal-
ysis.Intheeventofdeviationsfromthespecica-
tions,takesuitablemeasureswithoutdelay.
► Check all installed dirt traps for dirt and clean
them if necessary.
►Test the function of the safety valve for the heat-
ing circuit.

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11 Faults
►Read out the cause of the fault via the diagnostics
program of the heating and heat pump controller.
►Contact the local partner of the manufacturer or
the factory's customer service. Have the fault
message and unit number (“Unit sticker”,
page3)tohand.
12 Dismantling and Disposal
12.1 Dismantling
Unit is safely disconnected from the power supply
and protected against being switched back on
again.
►Collect all substances safely.
►Separate components by their materials.
12.2 Disposal and Recycling
►Dispose of environmentally hazardous substanc-
es(e.g.antifreeze,refrigerant,compressoroil)ac-
cording to the local regulations.
►Recycle or ensure proper disposal of unit
components and packaging materials according
to local regulations.
Bu󰀨er(standby)battery
1. Use a screwdriver to push out the bu󰀨er battery
on the processor board of the control
2. Dispose of the bu󰀨er battery (type: CR2032,
lithium)accordingtolocalregulations.

20 Subject to change without notice | 83057800eUK | ait-deutschland GmbH
Performance data SW 232H3 SW 262H3
Heating capacity ı COP
at B0/W35 operating point to EN14511
kW ı COP
22.35 ı 4.95 25.60 ı 4.92
at B0/W45 operating point to EN14511
kW ı COP
21.00 ı 3.79 23.90 ı 3.63
at B0/W55 operating point to EN14511
kW ı COP
20.16 ı 3.08 23.65 ı 2.95
at B7/W35 flows analogous to B0/W35 kW ı COP
26.70 ı 5.86 30.65 ı 5.70
Cooling capacity at max. flow rate (B15/W25), units with passive cooling: Identifier K kW — —
Limits of use
Heating circuit return min. I Heating circuit flow max. °C 20 I 65 20 I 65
Heat source return min. I max. °C -5 I 25 -5 I 25
additional operating points … — —
Sound
Sound pressure level at 1m distance from edge of unit dB(A) 37 37
Sound power level to EN12102 dB(A) 50 50
Heat source
Flow rate: minimum I nominal analogous to B0/W35 I maximum l/h 3500 ı 5300 ı 8000 4100 ı 6100 ı 9100
Max. free heat pump pressure ∆p (with cooling ∆pK) ***) ı Flow rate bar (bar) ı l/h 0.80 (—) ı 5300 0.68 (—) ı 6100
Approved anti-freeze Monoethylene glycol I Propylene glycol I Methanol I Ethanol • I • I • I • • I • I • I •
Anti-freeze concentration: Minimum frost protection down to °C -13 -13
max. allowable operating pressure bar 3 3
Heating circuit
Flow rate: minimum I nominal analogous to B0/W35 I maximum l/h 2000 ı 3900 ı 5000 2200 ı 4400 ı 5600
Max. free heat pump pressure ∆p (with cooling ∆pK) ı Volume flow bar (bar) ı l/h — (—) ı — — (—) ı —
Pressure losses, heat pump ∆p ı Volume flow bar ı l/h 0.19 (—) ı 3900 0.20 (—) ı 4400
max. allowable operating pressure bar 3 3
General unit data
Total weight (with cooling) kg (kg) 207 (—) 212 (—)
Box weight (with cooling) ı Tower weight (with cooling) kg (kg) ı kg (kg) 142 (—) ı 65 (—) 147 (—) ı 65 (—)
Refrigerant type ı Refrigerant capacity … ı kg R410A ı 2.9 R410A ı 3.1
Domestic hot water tank
Net volume l — —
Impressed current anode integrated: • yes — no — —
Domestic hot water temperature, heating pump mode I Electric heating element up to °C ı up to °C — I — — I —
Mixed water quantity according to ErP: 2009/125/EC (at 40°C, draw-off of 10 l/min) l — —
Standing loss according to ErP: 2009/125/EC (at 65°C) W — —
Maximum pressure bar — —
Electrics
Voltage code ı all-pole heat pump fusing *)**) … ı A 3~PE/400V/50Hz ı C20 3~PE/400V/50Hz ı C20
Voltage code ı Control voltage fusing **) … ı A 1~N/PE/230V/50Hz ı B10 1~N/PE/230V/50Hz ı B10
Voltage code ı Electric heating element fusing **) … ı A — —
Voltage code ı all-pole fusing for connection via a joint supply cable*)**) … ı A — —
HP*): effect. Power input at B0/W35 to EN14511 I Current input I cosφ kW ı A ı … 4.51 ı 10.10 ı 0.65 5.20 ı 11.1 ı 0.68
HP*): Max. machine current I Max. power input within the limits of use A ı kW 15.7 ı 9.1 17.7 ı 10.6
Starting current: direct ı with soft starter A ı A — ı 30 — ı 30
Degree of protection IP 20 20
Electric heating element output kW — —
Circulation pump power consumption, heating circuit I heat source min. — max. W ı W — ı 16 – 310 — ı 16 – 310
Other unit information
Safety valve, heating circuit I Heat source included in scope of supply: • yes — no — I — — I —
Expansion valve, heating circuit I Heat source included in scope of supply: • yes — no — I — — I —
Overflow valve I Changeover valve, heating -Domestic hot water integrated: • yes — no — I — — I —
Vibration isolators, heating circuit I Heat source integrated: • yes — no • I • • I •
*) Only compressor, **) Follow local regulations, ***) Figures for 25% mono-ethylene glycol
813572a 813573a
SW 232H3 – SW 262H3Technical data / Scope of supply