alphainnoTec SW 232H3 User manual

UK
83057800cUK – Translation into English of the original German operating manual
Brine/water heat pumps
Operating Manual
SW 232H3 - SW 302H3

2
Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
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 Intended 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 L ayout ...............................................................................6
3.2 Accessories................................................................... 7
3.3 Function ........................................................................... 7
4 Operation and care........................................................8
4.1 Energy and environmentally aware
operation .........................................................................8
4.2 Maintenance ................................................................. 8
5 Delivery, storage, transport and
installation...............................................................................8
5.1 Scope of supply .......................................................... 8
5.2 Storage............................................................................. 8
5.3 Unpackingandtransport.......................................9
5.4 Installation ....................................................................10
6 Installation and connection..................................10
6.1 Dismantle the module box..................................10
6.2 Install the hydraulic connections ....................14
6.3 Connect the electrical cables...........................14
6.4 Installing the control ...............................................15
7 Flushing,llingandventing.................................17
7.1 Remove the front panel of the module box17
7.2 Heating water quality............................................. 17
7.3 Fill,ushandventheatsource........................17
7.4 Flushandlltheheatinganddomestichot
water charging circuit ............................................18
8 Insulate hydraulic connections.........................18
9 Commissioning ................................................................19
10 Maintenance.......................................................................19
10.1 Basic principles.........................................................19
10.2 Maintenance as required.....................................19
10.3 Yearly maintenance................................................19
10.4 Cleanandushtheevaporatorund
condenser.....................................................................19
11 Faults .........................................................................................20
12 Dismantling and Disposal .....................................20
12.1 Dismantling..................................................................20
12.2 Disposal and Recycling........................................20
Technical data/Scope of supply ....................... 22
Performance curves......................................... 24
Dimensioned drawings..................................... 27
Installation plans .............................................. 29
Hydraulic integration, unit variant H (heating) .. 32
Terminal diagram.............................................. 35
Circuit diagram 1/3 ........................................... 36
EC Declaration of Conformity .......................... 39

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | 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
(“Rating plate” on page 6 and “Unit sticker” on
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 serious injuries or death.
WARNING Indicates a potentially dangerous
situation, which can result in serious
injuries or death.
CAUTION Indicates a potentially dangerous
situation, which can result in moder-
ate or minor injuries.
ATTENTION Indicates a potentially dangerous
situation, which can result in prop-
erty damage.
Symbols in the document
Symbol Meaning
Information for the professional
Information for the owner/operator
Requirement for an 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. note
on easier work, information on
standards
 Reference to further information
elsewhere in the operating manual
or in another document

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | 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:
●
Germany: www.alpha-innotec.de
●
EU: www.alpha-innotec.eu
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 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” on page 22) 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
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.
►Only allow qualied personnel with “electrical”
training to carry out work on the electrics and
electronics.
►Onlyallowqualied,skilledpersonneltodoany
otherworkonthesystem,e.g.
–Heating installer
–Plumbing installer
–Refrigeration system installer (maintenance
work)
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
Thereisariskofcuttingyourhandsonsharpedges
of the unit.
►Wear cut-resistant protective gloves during
transport.
2.4 Residualrisks
Electricshock
Components in the unit are live with life-threatening
voltage. Before opening the unit panelling:
►Disconnect unit from power supply.
►Protect unit against being switched back on
again.
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.

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
Injuries and environmental damage due to
refrigerant
The unit contains harmful and environmentally
dangerous refrigerant. If refrigerant leaks from the
unit:
1. Switch off unit.
2. Thoroughly ventilate installation room.
3. Notify authorised customer service.
2.5 Disposal
Batteries
Improper disposal of the buffer battery damages the
environment.
►Dispose of the buffer battery in an
environmentally compatible way according to
the local regulations.
Media harmful to the environment
Improper disposal of environmentally harmful media
(antifreeze, refrigerant) damages the environment:
►Collect media safely.
►Dispose of the media in an environmentally com-
patible way 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
VDI 2035.
●
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 effect 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ef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domesticwater,
calcium precipitates as scale. Limescale deposits
form on the heat transfer surfaces of the heating. The
efciency drops and energy costs rise. In extreme
cases the heat exchangers are damaged.
►Fill system with deionised heating water
(VE water) or VDI 2035) only.
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bo-
rehole heat exchanger (vertical collector) is not
permitted
►For operation of the heat source with water or
water-antifreeze mixture, ensure that the water
fulls the quality specications of the heating
water side.
Using groundwater
►If using groundwater install an intermediate
exchanger.

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
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
2
1
1 Electrical switchbox
2 Brine circulation pump
Rating plate
Rating plates 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 rating plate contains the following information at
the top:
●
Unit type, product number
●
Serial number, unit index
The rating plate also contains an overview of the
most important technical data.
Module box
5
3
2
76
1
4
1 Compressor
2 Condenser
3 Vibration isolator (4x)
4 Lifting lug (4x)
5 Evaporator
6 Heatsourcellinganddraintap
7 Heatingllinganddraintap

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
Control unit
3
12
1 Control
2 PushupapupstreamofUSBconnection
(forqualiedpersonnelforsoftware
updates and for data logging)
3 Wall-mountedbracket
Underside of control
13 42
1 RBE (RS 485)
2 Networkcableconnection
3 LIN bus cable connection to the heat pump
4 not used
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
●
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 for automatic changeover
between heating and cooling mode (if available)
●
“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.

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
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
●
Switching between heating and cooling
mode; automatically with expansion board
(accessories)
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.
5 Delivery, storage, transport
and installation
ATTENTION
Damage to the housing and the unit components
due to heavy objects.
►Do not place any objects on the unit which are
heavier than 30 kg.
5.1 Scope of supply
NOTE
On delivery the separate pack 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
●
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

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
5.3 Unpackingandtransport
Notes on safe transport
The housing with the unit components and the
module box are heavy (“Technical data/Scope of
supply” on page 22). 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.
Thereisariskofcuttingyourhandsonsharpedges
of the unit.
►Wear cut resistant protective gloves.
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off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.
Dismantle housing panels for transport with
handcart or carrying the unit
 Unitisunpacked(“Unpacking”onpage9).
1. To avoid damage to the housing panels:
–Undo 2 screws at the bottom of the front
panel.
–Lift up the front panel and put down in safe
place.
–Undo the 2 screws at the front of the cover.
–Undo 3 screws in each side panel.
–Tilt each of the side panels forwards and
push towards the rear.
8x
3.
1.
2.
Transport with a handcart
NOTE
●If transporting with a handcart the module
box must be pushed in.
●This 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.

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
1. To avoid damage: On a handcart, load the unit
on its side only.
2. Transport unit on the handcart.
Carrying the unit
 Housing panels are dismantled.
1. Dismantle module box 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 value [kg/m³]
R 134a 0.25
R 404A 0.48
R 407C 0.31
R 410A 0.44
(“Technical data/Scope of supply” on page 22).
Minimum room
volume =
Refrigerantcapacity[kg]
Limitvalue[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
different 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” on page 29).

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
ATTENTION
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°.

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
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” on page 17).
2. Close shut-off valves to the heating circuit.
3. Draintheunitvia thellinganddraintap(1)of
the heating.
1
4. Close shut-off valves to the heat source.
5. Draintheunitviathellinganddraintapofthe
heat source.
2
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.
2
1
3

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
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.

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11. Toprotecttheoorandmovethemodulebox(3)
more easily: place boards (4) under it, e.g. from
thepackagingmaterial.
12. Liftandholdnut(1)ontheheatingow.
2
1
3
13. Pull out the module box completely and place it
on the boards.
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 hydraulic connections. At the same
time, replace O-rings on the heat pump
connections (separatepackincluded).
4. Perform pressure test and insulate pipes of the
heat source 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 easily and the lugs latch into position.
–Plugintheblackrectangularconnectoratthe
top of the module box.

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
6.2 Install the hydraulic connections
ATTENTION
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” on page 22).

The cables for the heat source and the heating
arexedtothewallorceilingviaaxedpoint.
Connect the unit to the heat source and
heating circuit
1. Install shut-off 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” on page
22) are not exceeded.
6.3 Connect the electrical cables
ATTENTION
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
● The specications of the local power 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 (IEC 60947-2).
●
Note the level of the tripping current
(“Technical data/Scope of supply” on page
22).
●
Comply with the electromagnetic compatibility
regulations (EMC regulations).
–Lay the control/sensor cables and unit supply
cablesufcientlyfarapart(>100mm).
–Lay unshielded power supply cables and
shieldedcables(LINbuscable)withsufcient
distance between them.
●
Do not lengthen the patch cable and LIN bus
cable. LIN bus cables up to 30 m long can be
used if the quality of the cable is the same as
that of the original cable.

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
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 off the cover upwards and from the
rear.
2
1
1 LIN-bus
2 Mains voltage / Sensor
3. Feed the control/sensor cables and unit supply
cable into the housing from the rear.
4. Route cables from underneath through the cable
openings in the control box.
5. Connect cables to the respective terminals
(“Terminal diagram” on page 35).
Control the controller via a PC
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.
6.4 Installing the control
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” on page 9),
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 on the rear
panel at the electric control box.
–LIN bus cable approx. 1.1m from the xing
of the strain relief at the electrical control box
on the rear panel
–All other cables approx. 1.2 m

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
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
1. Releasetherearbracketfromthecontrol:Press
together the lugs on the left and right
2. If visually unattractive: Cut off the lugs on the
rear of the control (are only needed to insert in
the front panel).
3. Mark 2 drillholes (“Dimensioned drawing of
control,wall-mountedbracket”onpage28).
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).
1
23
1.
2.
3.
4.
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 on the front panel of
the unit if applicable (accessories).

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
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 Heating water quality
NOTE
●For detailed information refer, among
other things, to the VDI Guidelines
2035 “Vermeidung von Schäden in
Warmwasserheizanlagen” (preventing
damage in hot water heating systems).
●Required pH value: 8,2 ... 10
●for aluminium materials: pH value:
8,2 ... 8.5
►Fill the system with deionised heating water
(VE water) or VDI 2035 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
●
ideal pH value due to self-alkalinisation after
llingthesystem
●
If necessary, simple alkalinisation to pH value
8.2 by adding chemicals
7.3 Fill,ushandventheatsource
Water and the following antifreeze products are
approvedforllingthebrinecircuit:
●
Monopropylene glycol
●
Monoethylene glycol
●
Ethanol
●
Methanol
►For operation of the heat source with water or
water-antifreeze mixture, ensure that the water
fulls the quality specications of the heating
water side.
►Checkthatfrostprotectionisensured.
►Ensure that the antifreeze is compatible with the
pipe, seal and other component materials used
on site.

Drain pipe of the safety valve is connected.

Room is ventilated.
1. Mix antifreeze with water thoroughly with the
required ratio, before adding to the heat source.

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
2. Checktheconcentrationofthewater-antifreeze
mixture. Frost protection ‚Tecnical Data‘
3. Fill the heat source with the water-antifreeze
mixture.
4. Flush heat source system.
5. Flush until the system is air-free.
6. Fill the unit via the ball valves in the module box.
7. Dispose of collected liquid according to the local
regulations.
8. Set system pressure to 1 bar.
7.4 Flushandlltheheatingand
domestic hot water charging
circuit
 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-off 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-diffusion
tight.
8. Insulate the heating circuit of units with cooling
vapour-diffusion tight too.
9. The insulation of the connections is xed
with cable ties; additional insulation should
be attached on top of these (to prevent cold
bridges).

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
9 Commissioning
 Relevant planning & design data of the system
is documented in full.

The competent energy supplier has been
notiedofoperationoftheheatpumpsystem.

System is air-free.

Installation check using the general checklist
has been completed successfully.
1. Ensure that the following points are fullled
completely:
–Right-hand (clockwise) rotating load infeed
eldisavailableatthecompressor.
–Housing with the unit components is installed
and mounted according to this operating
manual.
–The electrical installation has been carried
out properly according to this operating
manual and local regulations.
–The power supply for the heat pump is
equipped with an all-pole miniature circuit-
breaker with at least 3mm contact spacing
(IEC 60947-2).
–The level of the tripping current is compliant.
–The heating circuit and heat source are
ushedandvented.
–The frost protection of the heat source liquid
is at –13 °C.
–All shut-off devices of the heating circuit are
open.
–All shut-off devices of the heat source are
open.
–The pipe systems and components of the
systemareleaktight.
2. Fill out carefully and sign the completion report
for heat pump systems.
3. In Germany and Austria: Send completion
report for heat pump systems and general
checklisttothemanufacturer’sfactorycustomer
service department. In other countries: Send
completion report for heat pump systems and
general checklist to the manufacturer’s local
partner.
4. Arrange for the heat pump system to be started
up by customer service personnel authorised by
the manufacturer; this is a chargeable service.
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 – e.g. EU Regulation (EC)
517/2014–amongotherthings,requireleakchecks
beforehand and/or for a logbook to be kept for
certain heat pumps.
The hermetic tightness and refrigerant ll quantity
are criteria for whether a logbook has to be kept
and leak tests performed or not, and at what time
intervals.
►Ensure compliance with local regulations with
regardtothespecicheatpumpsystem.
10.2 Maintenance as required
● Yearly, more frequently if necessary:
–Checking and cleaning the components of
the heating circuit and the heat source, e.g.
valves, expansion vessels, circulation pumps,
lters,dirttraps.
–Test the function of the safety valve for the
heating circuit.
10.3 Yearly maintenance
►Record the quality of the heating water
analytically. In case of deviations from the
specications, take suitable measures without
delay.
10.4 Cleanandushtheevaporator
und condenser
►Cleanandushtheevaporator/condenserstrictly
according to the manufacturer's regulations.
►After ushing the evaporator/condenser with
chemical cleaning product: neutralise any
residues and ush the evaporator/condenser
thoroughly with water.

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Subject to change without notice | 83057800cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
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” on
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 media safely.
►Separate components by their materials.
12.2 Disposal and Recycling
►Dispose of media harmful to the environment
according to local regulations, e.g. antifreeze
mixture, refrigerant.
►Recycle or ensure proper disposal of unit
componentsandpackagingmaterialsaccording
to local regulations.
Buffer (standby) battery
1. Use a screwdriver to push out the buffer battery
on the processor board of the control
2. Dispose of the buffer battery according to local
regulations.