alphainnoTec LWCV 82R3 User manual

UK
83059000dUK - Translation of the original operating manual
Air/water heat pumps
Operating Manual
LWCV

2
Subject to change without notice | 83059000dUK – Translation of the original operating manual | 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 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 Delivery condition:..................................................... 6
3.2 Layout ...............................................................................6
3.3 Accessories...................................................................8
3.4 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...........................................................................10
5.3 Unpacking and transport.....................................10
5.4 Installation....................................................................12
6 Set-up and connection.............................................13
7 Installation of air ducting.........................................14
7.1 Air outlet to right or left.........................................14
8 Attach side walls, rear wall and cover......14
9 Hydraulic installation ..................................................14
10 Electrical installation...................................................16
11 Installing the control panel ................................... 17
11.1 Operate the controller via a PC/network...18
12 Flushing,llingandventing.................................18
12.1 Heating water quality.............................................18
12.2 Flushandlltheheatinganddomestichot
water charging circuit ............................................18
13 Insulate hydraulic connections.........................19
14 Settheoverowvalve ..............................................19
15 Commissioning................................................................20
16 Maintenance.......................................................................21
16.1 Basic principles.........................................................21
16.2 Maintenance as required.....................................21
16.3 Yearly maintenance................................................21
16.4 Check evaporator and condensate pan and
clean if required........................................................21
16.5 Cleanandushcondenser................................21
17 Faults.........................................................................................22
17.1 Unlock the safety temperature limiter..........22
18 Dismantling and Disposal.....................................22
18.1 Dismantling..................................................................22
18.2 Disposal and Recycling........................................22
Technical data/Scope of supply ....................... 23
Performance curves......................................... 24
Dimensioned drawings..................................... 28
Installation plans .............................................. 31
Hydraulic integration......................................... 39
Terminal diagram.............................................. 41
Terminal diagrams, mains connection.............. 44
Circuit diagram 1/2 ........................................... 45
Circuit diagram 2/2 ........................................... 46
EC Declaration of Conformity .......................... 51

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Subject to change without notice | 83059000dUK – Translation of the original 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 ( “Nameplate” on page 7).
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)
●
Log book
1.3 Symbols and 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.
ATTENTION 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

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Subject to change without notice | 83059000dUK – Translation of the original 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 and
are kept up-to-date:
●
Germany: www.alpha-innotec.de
●
EU: 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 Intended use
The unit is solely intended for the following functions:
●
Heating
●
Domestic hot water preparation (optional, with
accessories)
●
Cooling,reversibleto18°Cowtemperature
►Proper use includes complying with the operating
conditions ( “Technical data/Scope of supply”
on page 23) 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.
► Allowqualiedpersonnelwith“electrical”training
only to carry out work on the electrics and
electronics.
► Allow qualied, skilled personnel only 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.
►Residual voltage at the inverter. Wait 90 seconds
before opening the device.
Injury due to moving parts
►Switch device on only with air ducts and weather
protectiongridtted.
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 area.
3. Notify authorised after sales service.

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
2.5 Disposal
Batteries
Improper disposal of the bu󰀨er battery damages the
environment.
► Disposeofthebu󰀨erbatteryinanenvironmentally
compatible way in accordance with the local
regulations.
Media harmful to the environment
Improper disposal of environmentally harmful media
(refrigerant) damages the environment:
►Collect media safely.
►Dispose of the media in an environmentally
compatible way in accordance with the local
regulations.
2.6 Avoid damage to property
The ambient air at the heat pump installation site, as
well as the air drawn in as a heat source, must not
contain any corrosive constituents!
Constituents such as:
●
Ammonia
●
Sulphur
●
Chlorine
●
Salt
●
Sewergasses,uegasses
Can cause damage to the heat pump, which could lead
to the complete failure / destruction of the heat pump!
Decommissioning/emptying heating
If the system / heat pump is decommissioned or
emptied,afterithasbeenlledalready,itisnecessary
to ensure that the condenser and any heat exchangers
present have been completely emptied in the event
of frost. Residual water in heat exchangers and
condensers can result in damage to components.
►Empty system and condenser completely, open
vent valves.
►Blast out with compressed air if necessary.
Improper action
Requirements for minimum scale and corrosion
damage in hot water heating systems:
●
Proper planning, design and commissioning
●
Closed system with regard to corrosion
●
Integration of an adequately dimensioned
pressure maintaining device
●
Use of demineralised heating water (VE water) or
VDI 2035 water
●
Regular servicing and maintenance
If a system is not planned, designed, started up and
operated in accordance with 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 precipitates as scale. Limescale deposits
form on the heat transfer surfaces of the heating. The
e󰀩ciency drops and energy costs rise. In extreme
cases the heat exchangers are damaged.
►Fill the system exclusively with demineralised
heating water (VE water) or VDI 2035 water.

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
3 Description
3.1 Delivery condition:
1
3
2
4
7
5
6
8
9
1 Switch box cover
2 Blind cover and louvre grille
3 Side wall (2-piece) and cover
4 Rear wall
5 Side wall (complete)
6 Front wall
7 Supporting crosspiece (left and right
- only remove after transportation!)
8 Lashing straps (with grip openings)
9 Transport box for accompanying parts:
Regulator control panel, safety
module,shut-o󰀨valves,connection
tube, operating manual
3.2 Layout
NOTE
This section essentially names the
components relevant for fullling the tasks
described in this operating manual.
1
2
1 Heat pump module
2 Compact module
The compact module
9
1
3
24
7
5
6
8
1
0
1 Electrical switch box, fold-out
2 Expansion tank
3 Return sensor
4 Bu󰀨ertank
5 Vent valve
6 Overowvalve
7 Electric heating element
8 Fill and drain valve

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
9 Heating circuit / domestic hot
water circulation pump
10 Heating circuit / domestic hot
water switching valve
1
4
3
2
5
6
1 Cover for electrical connections
2 Pre-nishedconnectionkit,heat
pump module / compact module
3 Manometer, safety valve
4 3xballvalveswithushingdevice
5 3 x copper piping for hydraulic
connection to the heating system
6 Condensate nozzle
The heat pump module
1
3
2
4
1 Evaporator module
2 Fan module
3 Fan
4 Refrigerant circuit module
The refrigerant circuit module:
1
6
4
2
3
5
7
8
1 Plug connection to the fan module
2 Electrical switch box
3 Expansion valve (cooling, defrost)
4 Condenser
5 Expansion valve (heating)
6 Compressor (in the insulated housing)
7 Filter dryer
8 Inverter unit
Nameplate
The nameplate is attached at the following point on the
unit:
●
On the rear side
The nameplate contains the following information at
the top:
●
Unit type, item number
●
Serial number
The nameplate also contains an overview of the most
important technical data.

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
3.3 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 panel is mounted on the wall
●
Domestic hot water tank
●
Room thermostat for switching the cooling
function
●
Dew point monitor for protecting a system with
coolingfunctionatlowowtemperatures
●
Expansion board with various additional functions
●
Room control panel for controlling the main
functions from the living room
3.4 Function
Liquid refrigerant is evaporated (evaporator), the
energy for this process is environmental heat and
comes from the outside air. 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.
Due to the integrated switching valve and the integrated
energye󰀩ciencycirculationpumpthe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.
An integrated overow valve ensures that the heat
pump does not switch to high-pressure fault if all
heating circuits are closed. The integrated vibration
decouplers for the hydraulics prevent structure-borne
sound and vibrations from being transferred into the
xedpipesandthereforeintothebuilding.
Control panel
3
12
1 Control panel
2 PushupapinfrontofUSBconnection
(forqualiedpersonnel,forsoftware
updates and for data logging)
3 Wall-mount (will only be detached if the control
panel is not being attached to the device but
is being mounted on the wall instead)
Underside of control panel
13 42
1 Room control panel RBE RS 485
(accessory) connection
2 Network cable connection
3 LIN-bus cable connection to the controller board
4 Modbus cable to Modbus distributor connection

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
Cooling
Cooling is integrated in the units. The following options
are possible for the cooling function ( operating
manual of the heating and heat pump controller):
●
Active cooling
●
Control of the cooling function via the heating and
heat pump controller
●
Changeover between heating and cooling
operation
Network connection on the control panel
The control panel 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. Furthermore, the
manufacturer's internet-based service can also be
used.
4 Operation and care
NOTE
The unit is operated via the control panel
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 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 (shock ventilation).
●
Make sure that the controller settings are correct
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
►Check delivery immediately after receipt for
outwardly visible damage and completeness.
►Notify supplier of any defects immediately.
The accompanying parts package contains:
Set into the styrofoam component
●
1 supply connection line
28 mm (12 kW) / 22 mm (8 kW)
●
1 return connection line
28 mm (12 kW) / 22 mm (8 kW)
●
3 connection pipes to the heating circuit
●
1 HT-bend DN 40 mm 87°
●
Swelling tape for louvre grille and blind cover
Package 1:
●
1 control panel
●
1 outdoor sensor without cable
●
3 Spax screws 5 x 45
●
3universalwall/ooranchor6x35
●
2 cable ties 3.5 x 200 mm
Package 2:
●
1 safety valve with manometer
1/2" x 3/4", 3 bar
Package 3:
●
1 double-nipple 1/2"
●
1 T-piece 1/2"
●
2 ball valves DN 25 with lling and emptying
device,withcompression-typetting
●
1ballvalveDN25withcompression-typetting
●
1llanddrainvalve

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
Package 4:
●
Documents (manuals, ERP data and label)
●
Installation instructions
●
2 x name plates
Package 5:
●
1 tube lubricant
●
1 protective cover for plug
●
4 EPP screws
●
3atseals5/4"
●
4atsealsforconnectionline
In façade package:
●
2 screws M5x16, black for the front wall
●
15 screws for façade mounting
●
1 plastic louvre grille
●
1 heat pump blind cover
●
1 EPP switch box cover
●
Blind cover for front wall
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
Notes on safe transport
The unit is heavy ( “Technical data/Scope of
supply” on page 23). There is a risk of injuries or
damage to property if the unit falls or overturns.
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.
Transport the unit preferably with a pallet truck,
alternatively with a handcart or by carrying
►Do not tilt the heat pump module by more than 45°.
WARNING!
Do not transport heat pumps and compact
modules on top of one another in unpacked
condition - risk of toppling!
►It is only permitted to use the lashing straps on the
heat pump module when carrying by hand.
Transport with a pallet truck
►Transport the unit to the place of installation
packaged and secured on a wooden pallet.
Unpacking:
1. Remove plastic lms. Ensure that you do not
damage the unit.
2. Dispose of the transport and packaging material in
an environmentally friendly way and in accordance
with local regulations.
3. Remove the lm from the plastic element of the
front panel in the place of installation.
Liftthehousingwallso󰀨thepalletandset
down.
The heat pump comprises the heat pump module and
the compact module. These are placed on top of one
another on the pallet.
If the unit is not transported by a pallet truck: Do not lift
o󰀨thepalletuntilafterunpackingandsettingdownthe
housing panels.
●
The façade front is located in front of the device,
along with the accessory package.
●
The single-part and two-part side wall are located
on the rear side
Optional disconnection of the fan module
NOTE
If required (tight accessways), the fan module
can be removed.
1. Disconnect the plug-in connection of the load and
bus cable at the top left on the refrigerant circuit
switch box.
2. Remove the 4 screws.
3. Pullo󰀨thefanmodule.

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
4. Break o󰀨 the projecting struts on the supporting
crosspieces.
1
33
33
2
1 Lashing straps with grip openings
2 Styrofoam strut
3 Screws on the fan module
Disconnecting the evaporator module
NOTE
If required, the evaporator module can be
disconnected from the refrigerant circuit
module. This work must be carried out by the
factory customer service department!
►Please contact our factory customer service
department!
Carrying the unit and transporting with
handcart
 Housing walls are set down.
There are two lashing straps around the heat pump
modulewithgripopeningsatdi󰀨erentheights.These
can be used for lifting and carrying.
To provide additional stability, two supporting
crosspieces are clamped in the side cut-outs for
the air ducts. Do not remove these until transport
is complete!
► Lifttheheatpumpmoduleo󰀨thecompactmodule
and set it down.
Carrying the compact module
►Carry the compact module to the installation site
using the 4 lashing straps.
Use two carrying loops on each side
►The compact module can also be carried on end,
with the switch box at the top.
Transporting the compact module with a
handcart
1. Load the compact module with the underside of
the unit on the handcart.
2. Secure the compact module to the handcart with
lashing straps .
3. Transport the compact module to the installation
site.
Transporting the heat pump module with a
handcart
1. Load the heat pump module only with the narrow
side, left or right, on the handcart.

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
2. Secure the heat pump module to the handcart
with lashing straps.
3. Transport the heat pump module to the installation
site.
5.4 Installation
Installation area and space requirements
NOTE
Note and follow the local regulations and
standards regarding the installation area and
space requirements. The table shows the
regulations to EN 378-1 relevant in Germany.
Refrigerant Limit value [kg/m³]
R 134a 0.25
R 404A 0.52
R 407C 0.31
R 410A 0.44
( “Technical data/Scope of supply” on page 23).
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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 requirements
for the refrigerant used.

Installation inside the building only.

Installation area is dry and frost-free.

Clearance dimensions are met ( “Installation
plans” on page 31).

Thesurface/oorissuitableforinstallationofthe
unit:
●Level and horizontal
●Load-bearing capacity for the unit's weight
NOTE
The sound emissions of the heat pumps must
be taken into account in the respective instal-
lation plans for air/water heat pumps. The re-
spective regional regulations must be com-
plied with.

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
6 Set-up and connection
CAUTION!
In the air outlet area the air temperature is
approx. 5° K below the ambient temperature.
Under certain climatic conditions an ice
layer can therefore form in the air outlet area.
Install the heat pump such that the air blower
does not discharge into footpath areas .
Aligning the unit
1. Align the compact module horizontally and stably
in the installation site using the height-adjustable
feet and a size 13 spanner. Adjustment range:
20 mm. Then fasten with the size 17 lock nuts.
2. Place the heat pump module on the compact
module.
If the fan module has been removed this must be
reinstalled on the evaporator module. Attach the 4
screws (1) and re-establish the two plug-in connections
of the load and bus cables.
11
11
Do not change the adjustable feet of the heat pump
module as otherwise the housing walls will no longer
t!
3. Remove the two lashing straps:
Open the strap tensioner and turn the hook on the
base plate by 90°:
4. Attach the swelling tape to the louvre grille and
blind cover by applying it around the edges and
then sticking it in place.
Heat pump installation instructions
5. Remove the two styrofoam crosspieces.
6. Install the blind cover and the louvre grille.
807xxx
Attach the louvre grille to the air outlet
side!
7. Attachrearwallandscrewrmlyintoplace.
Heat pump installation instructions

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
7 Installation of air ducting
7.1 Air outlet to right or left
Left air discharge: Right air discharge:
Air duct installation instructions
Wall duct installation instructions
8 Attach side walls, rear wall
and cover
Heat pump installation instructions
1. Fasten rear wall.
2. Hang side walls from above. Fasten at the front
with a screw in the middle. Fasten with 2 screws
at the bottom.
3. Fit cover and screw into place.
9 Hydraulic installation
NOTE
If an existing system is being replaced, the
old vibration decouplers cannot be reused.
NOTE
Before connection to the heating system, the
heatingcircuitmustbethoroughlyushed.
ATTENTION
Damage to the copper pipes due to unacceptable
loading!
►Secure all connections against twisting.

Cross-sections and lengths of the pipes for the
heating circuit are adequately dimensioned.

The free pressing of the circulation pump produces
at least the minimum throughput required for the
unit type ( “Technical data/Scope of supply” on
page 23).

Thecablesfortheheatingarexedtothewallor
ceilingviaaxedpoint.
Establish the hydraulic connection between
the heat pump module and the compact
module.
Establish the hydraulic connection between the heat
pump module and the compact module with the pre-
nishedconnectionkit.
The rear wall must be installed for this!
Heat pump installation instructions
Connect the unit to the heating circuit
Installthecompressionttingsandball
valves
ATTENTION
Leaks or fracture of the union nut due to excessive
force!

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
►Tighten the union nut only as far as described
below.
1. Check pipe ends for scratches, dirt and
deformation.
2. Check proper position of the clamping ring on the
tting.
3. Push the pipe through the clamping ring up to the
limitstopinthetting.
4. Tighten the union nut hand-tight and attach
waterproof marking.
5. Tighten union nut with 3/4 rotation.
6. Check connection for leaks.
If the connection leaks:
1. Undo connection and check pipe for damage.
2. Tighten the union nut hand-tight and retighten with
the open-ended spanner with 1/8 to 1/4 turn, as
the clamping ring is already in a clamping position.
Heat pump installation instructions
Hydraulic integration documentation
The piping can be implemented on the right:
Or on the left
Always install the safety valve in the return line
(topmost pipe)!
The copper piping can be shortened but should not be
shorter than 250 mm from the centre of the bend!
min. 250
min. 250
min. 250
V
X
W
1. Installshut-o󰀨devicesintheheatingcircuit.
2. Insert the vent at the highest point of the heating
circuit.
3. Ensure that the max. working overpressures
(“Technical data/Scope of supply” on page
23) are not exceeded.
Condensate connection
The outlet for the hot water safety valve and the
condensate from the air must be drained o󰀨 in
accordance with the respective applicable standards
and regulations. Discharging the condensate and the
outlet for the safety valve into the sewers is permitted
only via a funnel waste trap, which must be accessible
at all times.

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
1. Fit an HT-bend onto the condensate outlet.
2. Route piping into the funnel waste trap.
Heat pump installation instructions
10 Electrical installation
Establish the electrical connection between
the heat pump module and the compact
module.
1. Route the two plug-in connections of the load and
bus cable from the compact module to the plug-in
points on the heat pump module.
2. Couple the connectors together.
3. Fit cover for plug-in connections.
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 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).
●
If required: Residual current circuit breaker type A
issu󰀩cient.
●
Note the level of the tripping current
( “Technical data/Scope of supply” on page
23).
●
Comply with the electromagnetic compatibility
regulations (EMC regulations).
●
Lay the control/sensor cables and unit supply
cablesu󰀩cientlyfarapart(>100mm).
●
Lay unshielded power supply cables and shielded
cables(buscable)su󰀩cientlyfarapart.
●
Do not lengthen the patch cable or the bus cable.
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.
Electrical connection
The electrical connection is established via the
compact module switch box.
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 gland of the
control box.
2. Route the cable through the cable gland and into
the switch box.
NOTE
Cables must have adequate excess length.

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Cable gland on the rear of the unit
3. Open electrical switch box.
4. Remove the cover panel.
The cover panel (2) can be inserted into the
bottom edge as a strut such that the open switch
box (1) can be more easily closed at a 45° angle.
2
1
5. Feed the control/sensor cables and unit supply
cable into the housing from the rear.
6. Connect cables to the respective terminals
(“Terminal diagram” on page 41).
NOTE
In units with integrated electric heating
element, the electric heating element is
connected at 9kW (6 kW) in the factory.
At contactor Q it is possible to select 6kW
(4 kW) = 2 phase operation. Disconnect
Q5/6 for this. Or 3 kW (2 kW) = 1 phase
operation. Disconnect Q5/6 and Q5/4 for this.
The values in brackets are for the 6 kW
heating element. Disconnected cables must
be furnished with screw terminals. Only the
phases cited above may be disconnected
(safety temperature limiter).
11 Installing the control panel
NOTE
The control panel can be inserted in a recess
in the front panel of the unit or can be installed
on the wall.
Heat pump installation instructions
Mount the control panel on the wall and
connect
1. Release the rear bracket from the control panel.
2. Ifvisuallyunattractive:Cuto󰀨thesnapnoseson
the rear of the control panel (are only needed to
insert in the front panel).
3. Mark 2 drill holes (“Dimensioned drawing of
control panel, wall-mounting bracket” on page
30).
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 Modbus cable through the cable gland
between the compact module and the heat
pump module and into the control panel on the
underside.
8. Push the control panel onto the wall-mounted
bracket.
9. Put on the masking plate if applicable
(accessories).

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11.1 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 panel (1).
1
NOTE
The network cable can be retrotted at any
time.
12 Flushing,llingandventing
12.1 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 only with demineralised heating
water (VE water) or VDI 2035 water (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
12.2 Flushandlltheheatingand
domestic hot water charging
circuit
 Outlet pipe of the safety valve is connected.
►Ensure that the set pressure of the safety valve is
not exceeded.
NOTE
The venting program on the controller can
also be used to support the ushing and
venting process. It is possible to control
individual circulation pumps and even the
switching valve through the venting program.
As a result it is not necessary to remove the
valve motor.
1. Pull the U-clip(2) o󰀨 the oor of the valve
motor (1).
2. Pull the valve motor carefully o󰀨 the 3-way
switching valve (3).
1
2
3
2.
1.
3. Turn the spindle of the 3-way switching valve so
that the rounded side of the spindle points in the
direction of marking A of the connections of the
3-way switching valve.
A
B

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
4. Flush the domestic hot water charging circuit for
approx. 1 minute.
5. Turn the spindle so that the rounded side of the
spindle points in the direction of marking B of the
connections of the 3-way switching valve.
6. Flush heating circuit thoroughly, until no more air
is discharged.
7. Vent system at the respective highest point.
8. Vent heat pump.
9. Position the valve motor (1) on the 3-way
switching valve (3).
10. Insert the U-clip(2) into the oor of the valve
motor.
13
1.
2.
2
11. Ensure that the U-clip has latched into position
correctly:
●Valve motor sits securely on the 3-way
switching valve.
●Both prongs of the U-clip sit on the lug.
●The tips of the U-clip are visible by approx.
2mm(notsignicantlymore!).
13 Insulate hydraulic
connections
Insulate hydraulic lines in accordance with local
regulations.
1. Openshut-o󰀨devices.
2. Perform a pressure test and check for leaks.
3. Insulate external piping on site.
4. Insulateallconnections,ttingsandpipes.
14 Settheoverowvalve
NOTE
●The activities in this section are only
necessary for integration of storage tank in
series.
●Complete the worksteps quickly, otherwise
the maximum return temperature can be
exceeded and the heat pump switches to
high-pressure fault.
● Turn the adjusting knob at the overow
valve to the right to increase the
temperature di󰀨erence (the spreading),
turn it to the left to reduce it.

System is running in heating mode (ideally in cold
condition).
There is a facility directly in the IBN - assistant to
adjusttheoverowvalvetosuitthehydraulicsystemif
the storage tank is integrated in series.
ConrmIBN-assistantorcarryouttheadjustmentvia:
  Service>>Settings>>E󰀩ciencypump:
The menu point “Adjust overow valve” is preset
to “No”. The overow valve adjustment function is
deactivated.

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Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
●UWP control signal displays the current requested
pump power in %
● Currentowrateistheactualowratecurrently
present (measurement accuracy +/- 200 l/h)
1. Openoverowvalvefully,closeheatingcircuit
2. Setthemenupoint“Setoverowvalve”from“No”
to “Yes” and so the circulation pump is controlled
with 100% – the pump starts up.
3. If the UWP control signal reaches 100%, close
overowvalvefarenoughthatthemax.owrate
(see technical data) can be assured.
1
2
Overowvalve(1)adjustingknob(2)
4. Ifyouleavethe“Settheoverowvalve”menuor
after one hour at the latest, the circulation pump
switches back to its standard regulation.
5. Open valves to heating circuit.
15 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 rough checklist has
been completed successfully.
1. Ensure that the following points are fullled
completely:
●
Clockwiserotatingloadinfeedeldispresent
at the compressor.
●
The system is installed and mounted in
accordance with this operating manual.
●
The electrical installation has been carried
out properly in accordance with this operating
manual and 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 level of the tripping current is compliant.
●
Heatingcircuitisushedandvented.
●
All shut-o󰀨 devices of the heating circuit are
open.
●
The pipe systems and components of the
system are leak-tight.
2. Fill out carefully and sign the notice of completion
for heat pump systems.
3. In Germany and Austria: Send notice of
completion for heat pump systems and
rough checklist to the manufacturer’s
factory customer service department.
In other countries: Send notice of completion for
heat pump systems and rough checklist to the
manufacturer’s local partner.
4. Arrange for the heat pump system to be
commissioned by after-sales service authorised
by the manufacturer; this is a chargeable service.