Alpha LWV 82R1/3 User manual

UK
83059100aUK – Translation of the operating manual
Air/water heat pumps
Operating Manual
LWV alira
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Subject to change without notice | 83059100aUK – Translation of the operating manual | ait-deutschland GmbH
Table of Contents
1 About this operating manual ................................3
1.1 Validity ..............................................................................3
1.2 Other applicable documents...............................3
1.3 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 Delivery condition:..................................................... 6
3.2 Layout ............................................................................... 6
3.3 Accessories...................................................................7
3.4 Function...........................................................................7
4 Operation and care........................................................8
4.1 Energy-conscious and environmentally-
aware operation..........................................................8
4.2 Care....................................................................................8
5 Delivery, storage, transport and
installation............................................................................... 8
5.1 Scope of supply ..........................................................8
5.2 Storage............................................................................. 9
5.3 Unpacking and transport.......................................9
5.4 Installation ....................................................................10
5.5 Noise ............................................................................... 11
6 Set-up and connection.............................................12
7 Installation of air ducting.........................................13
7.1 Air discharge to right or left ...............................13
8 Attach side walls, rear wall and cover ......13
9 Hydraulic installation ..................................................14
10 Electrical installation...................................................15
11 Flushing,llingandventing.................................16
11.1 Heating water quality.............................................16
11.2 Flushandlltheheatingcircuit.......................16
12 Insulate hydraulic connections.........................16
13 Settheoverowvalve ..............................................16
14 Commissioning ................................................................17
15 Maintenance.......................................................................18
15.1 Basic principles.........................................................18
15.2 Maintenance as required.....................................18
15.3 Yearly maintenance................................................18
15.4 Check evaporator and condensate pan
and clean if required ..............................................18
15.5 Cleanandushcondenser................................18
16 Faults .........................................................................................19
17 Dismantling and disposal ......................................19
17.1 Dismantling..................................................................19
17.2 Disposal and recycling..........................................19
Technical data/Scope of supply ....................... 20
Performance curves......................................... 21
Dimensioned drawings..................................... 23
Installation plans .............................................. 25
Hydraulic integration......................................... 31
Circuit diagrams ............................................... 35
EC Declaration of Conformity .......................... 39

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Subject to change without notice | 83059100aUK – Translation of the 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 pass on to the new owner if the unit changes
hands.
►If you have any questions or anything is unclear,
ask the manufacturer's local partner or the
factory's customer service.
►Note and follow all other applicable documents.
1.1 Validity
Thisoperatingmanualreferssolelytotheunitidentied
by the nameplate and unit sticker ( “Symbols and
markings” on page 3).
1.2 Other applicable documents
The following documents contain additional information
to this operating manual:
●Planning & design manual, hydraulic integration
●Operating manual for the heating and heat pump
controller
●Brief description of the heat pump controller
●Operating manual for the expansion board
(accessories)
●Log book
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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1.3 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.ait-deutschland.de
●EU: www.ait-deutschland.com
2 Safety
Only use the unit if it is in perfect working order and
only for its intended purpose, safely and aware of the
hazards, and follow this operating manual.
2.1 Proper use
The unit is solely intended for the following functions:
●Heating
●Domestic hot water preparation (optional, with
accessories)
●Cooling, reversible
►Proper use includes complying with the operating
conditions ( “Technical data/Scope of supply”
on page 20) as well as the operating manual
and any other applicable documents.
►Observe the local regulations during use: laws,
standards, guidelines, directives.
All other uses of the unit are deemed to be not as
intended.
2.2 Personnelqualications
All instructional information in this operating manual is
intendedsolelyforqualied,skilledpersonnel.
Only qualied, skilled personnel is able to carry out
the work on the unit safely and correctly. Interference
by unqualied personnel can cause life-threatening
injuries and damage to property.
►Ensure that the personnel is familiar with local
regulations, especially those on safe and hazard-
aware working.
► Allowqualiedpersonnel with "electrical" training
only to carry out work on the electrical and
electronic systems.
► Onlyallowqualied, skilled personnelto perform
any other work on the system, e.g.
●Heating contractor
●Plumber
●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.
►Secure 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 off unit.
2. Thoroughly ventilate installation room.
3. Notify authorised customer service.

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2.5 Disposal
Media harmful to the environment
Improper disposal of environmentally hazardous media
(refrigerant) damages the environment:
►Collect media safely.
►Dispose of the media in an environmentally
compatible way in accordance with local
regulations.
2.6 Avoid damage to property
The ambient air at the place in which the heat pump is
installed, 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!
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 an adequately dimensioned
pressure maintaining device
●Use of deionised 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 cushion gas 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 essentially
depend 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efciency drops and energycosts rise.Theheat
exchangers will be damaged in extreme cases .
►Fill the system exclusively with deionised heating
water (VE water) or VDI 2035 water.

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3 Description
3.1 Delivery condition:
1
3
2
4
7
5
6
8
1 Blind cover and louvre grille
2 Side wall (2-piece) and cover
3 Rear wall
4 Side wall (complete)
5 Front wall
6 Supporting crosspiece (left and right
- only remove after transportation!)
7 Lashing straps (with grip openings)
8 Wooden strip / fan support
3.2 Layout
NOTE
This section essentially names the
components relevant for fullling the tasks
described in this operating manual.
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

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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, product number
●Serial number
The nameplate also contains an overview of the most
important technical data.
3.3 Accessories
The following accessories are available for the unit
through the manufacturer's local partner:
●Domestic hot water tank
●Buffer tank
●Room thermostat to switch the cooling function
●Dew point monitor to protect a system with cooling
functionatlowowtemperatures
●Room control panel tr control 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 at a hightemperatureisliqueed
(condenser).
The high temperature is hereby discharged to the
heating water and is used in the heating circuit.
The liquid refrigerant at a high pressure and high
temperature is depressurised (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. Reheating, drying out screed or
increasing the domestic hot water temperature can be
carried out using an electric heating element, which
is activated by the heat pump controller as and when
necessary.
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.
Cooling
Cooling is integrated in the units. The following
options are possible for units with cooling function
( operating manual of the heating and heat pump
controller):
●Active cooling
Cooling in conjunction with hydraulic module or
hydraulic station possible to 18°C. Possible to 7°C
in conjunction with wall-mounted controller.
●Control of the cooling function via the heating and
heat pump controller
●Changeover between heating and cooling
operation

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5.1 Scope of supply
►Check delivery immediately after receipt for
externally visible damage and completeness.
►Notify supplier of any defects immediately.
The accompanying parts package contains
Package 1:
● 3atseals5/4“
● 4atseals1“
Package 2:
●1 tube lubricant
●1 HT-bend DN 40mm 87°
●1 protective cover for plug
●4 EPP screws
In façade package:
●2 screws M5x16, black for the front wall
●15 screws for façade mounting M5x9
●1 plastic louvre grille
●1 heat pump blind cover
●Swelling tape for louvre grille and blind cover
●Documents (manuals, ERP data and label)
●Type sticker
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-conscious and
environmentally-aware operation
The generally accepted requirements for an energy-
conscious and environmentally-aware operation of a
heating system also apply when using 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 Care
Wipe down the outside of the unit only using a damp
cloth or cloth with mild cleaning agent (washing-up
liquid, neutral cleaning agent). Do not use any harsh,
abrasive, acid or chlorine-based cleaning agents.
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.

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5.2 Storage
►Do not unpack the unit until directly before
installation if possible.
►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 20). 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°.
►The lashing straps on the heat pump module may
only be used 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 off the pallet and set
down.
If the unit is not transported by a pallet truck: do not lift
off the pallet until after unpacking and setting down the
housing panels.
●The façade front is located in front of the device.
●The single-part and two-part side wall are located
on the rear side
Optional disconnection of the fan module
NOTE
The fan module can be removed if required
(narrow passages ) .
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 off the fan module.
4. Break off the projecting struts on the supporting
crosspieces.
1
33
33
2
1 Lashing straps with grip openings
2 Styrofoam struts
3 Screws on the fan module
Disconnecting the evaporator module
NOTE
The evaporator module can be disconnected
from the refrigerant circuit module if required.
This work must be carried out by the factory
customer service department!
►Please contact our factory customer service
department!

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Carrying the unit and transporting with a
handcart
Housing walls are set down.
There are two lashing straps around the heat pump
module with grip openings at different 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!
Transporting the heat pump module with a
handcart
1. Only place the heat pump module onto the
handcart with the narrow side, left or right.
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 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 according 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 20).
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 requirements
for the refrigerant used.
Installation inside the building only.
Installation room is dry and frost-free.
Clearance dimensions are met ( “Installation
plans” on page 25).
Thesurface/oorissuitableforinstallationofthe
unit:
●level and horizontal
●Load-bearing capacity for the unit's weight

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5.5 Noise
The noise emissions of the heat pumps must be taken
into account in the respective installation plans for air/
water heat pumps. The respective regional regulations
must be observed.
NOTE
The following sound pressure levels
are calculated values. Other installation
situations, other adjacent buildings or even
sound-reecting surfaces can result in an
increase of the level. Precise details of the
respective sound pressure level can only
be determined by measurement on site
once the heat pump has been installed.
Regional regulations are not taken into
account in the table values. Additions for
tonality, background values and so on must
therefore be added to these if required.
The following sound pressure levels result depending on the distance and installation variant with directivity Q. All
data in dB (A):
LWV 82R1/3
Distance in m 1234567891011 12 13 14 15 16 17 18 19 20
Sound pressure level Q4 40 34 30 28 26 24 23 22 21 20 19 18 18 17 16 16 15 15 14 14
Sound pressure level Q4
Silent Mode 35 29 25 23 21 19 18 17 16 15 14 13 13 12 11 11 10 10 9 9
Sound pressure level Q8 43 37 33 31 29 27 26 25 24 23 22 21 21 20 19 19 18 18 17 17
Sound pressure level Q8
Silent Mode 38 32 28 26 24 22 21 20 19 18 17 16 16 15 14 14 13 13 12 12
LWV 122R3
Distance in m 1234567891011 12 13 14 15 16 17 18 19 20
Sound pressure level Q4 44 38 34 32 30 28 27 26 25 24 23 22 22 21 20 20 19 19 18 18
Sound pressure level Q4
Silent Mode 39 33 29 27 25 23 22 21 20 19 18 17 17 16 15 15 14 14 13 13
Sound pressure level Q8 47 41 37 35 33 31 30 29 28 27 26 25 25 24 23 23 22 22 21 21
Sound pressure level Q8
Silent Mode 42 36 32 30 28 26 25 24 23 22 21 20 20 19 18 18 17 17 16 16
The directivity Q for the different installation variants:
Q4: Air outlet / air inlet on the wall
Q8: Air outlet / air inlet on the wall (corner mounting less than 3m, or opposite wall less than 5m, or canopy less than
3m. Max. two walls or canopies are permitted, otherwise an additional 3dB(A) must be added on for each additional
wall or each additional canopy.)
Q = 4
Q = 8
Q = 4
Q = 8

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In case of 2 or more units of the same heat pump type,
the respective level increase must be added to the
corresponding sound pressure level from the following
table:
Number nof equally
loud sound sources
Level increase
∆Lin dB
1 0.0
2 3.0
3 4.8
4 6.0
5 7.0
6 7.8
7 8.5
8 9.0
9 9.5
10 10.0
12 10.8
In the case of two different, not equally loud units, the
level increase is read off from the following diagram:
Level increase in dB
Level difference in dB
Example: If the level difference between two unequal
sound sources is 5 dB, the level increase is an
additional 1.2 dB.
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 heat pump module horizontally and
stably at 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.
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
2. Remove the two lashing straps:

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3. Open the strap tensioner and turn the hook on the
base plate through 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. and replace them with the blind cover and the
louvre grille.
807xxx
Attach the louvre grille - left or right - to
the air outlet side!
7. Hang rear wall in place and fasten at the bottom.
Heat pump installation instructions
7 Installation of air ducting
7.1 Air discharge to right or left
Left air discharge: Right air discharge:
Ers. d.
Ers. f.
E
D
C
B
A
4 3 2 1
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.

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9 Hydraulic installation
NOTE
If an existing system is being replaced, the
old vibration decoupling may not be reused.
NOTE
Theheatingcircuitmustbeushedthoroughly
before connection to the heating system.
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 recirculating pump
produces at least the minimum throughput
required for the unit type ( “Technical data/
Scope of supply” on page 20).
The hydraulic system must be equipped with a
buffer tank, the required volume of which depends
on your unit model:
Buffer tank volume = Min. water ow / 10
Thecablesfortheheatingarexedtothewallor
ceilingviaaxedpoint.
3
1
2
1 Heating water supply
2 Condensate nozzle
3 Heating water return
1. Insert the vent at the highest point of the heating
circuit.
2. Ensure that the working overpressures
(“Technical data/Scope of supply” on page
20) are not exceeded.
Condensate connection
The outlet for the heating water safety valve and
the condensate from the air must be drained off in
accordance with the respective applicable standards
and regulations. Discharging the condensate and the
safety valve outlet into the sewers is only permitted via
a funnel waste trap, which must be accessible at all
times.
1. Fit an HT-bend onto the condensate outlet.
2. Route piping into the funnel waste trap.
Heat pump installation instructions

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10 Electrical installation
Connect the electrical cables
ATTENTION
Irreparable damage to the compressor due to wrong
rotaryeld!
► Ensurethatthereisaclockwiserotary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 circuit breaker with at
least 3 mm contact spacing (acc. to
IEC 60947-2).
●If required, residual current circuit breaker type A
issufcient.
●Note the level of the tripping current
( “Technical data/Scope of supply” on page
20).
●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(buscable)suf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.
Connect the heat pump module with
hydraulic module, hydraulic station or wall-
mounted controller
1. Route the two plug-in connections of the load and
bus cable to the plug-in points on the heat pump
module.
2. Couple the connectors together.
3. Fit cover for plug-in connections

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11 Flushing,llingandventing
11.1 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 deionised 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-alkalisation after lling
the system
●If necessary, simple alkalisation to pH value 8.2 by
adding chemicals
11.2 Flushandlltheheating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 recirculating pumps and even the
switching valve through the venting program.
The valve motor then does not have to be
removed.
12 Insulate hydraulic
connections
Insulate hydraulic lines in accordance with local
regulations.
1. Open shut-off devices.
2. Perform a pressure test and check for leaks.
3. Insulate external piping on site.
4. Insulateallconnections,ttingsandpipes.
5. If the device is used for cooling below 18°C (only
possible in combination with the wall-mounted
controller), the insulation must be vapour diffusion-
tight.
13 Settheoverowvalve
NOTE
●The activities in this section are only
necessary for the integration of storage
tanks in series .
●Complete the work steps quickly, otherwise
the maximum return temperature may 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 difference (the temperature
drop), 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>>Efciencypump:

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Subject to change without notice | 83059100aUK – Translation of the operating manual | ait-deutschland GmbH
Thedefauiltsettingforthemenupoint“Adjustoverow
valve”is“No”.Theoverowvalveadjustmentfunction
is deactivated.
●UWP control signal indicates the current
requested pump power in %
● Currentowistheactualow currentlypresent
(measurement accuracy +/- 200l/h)
1. Openoverowvalvefully,closeheatingcircuits
2. Set the menu point “Set overow valve” from
“No” to “Yes” so that the recirculating 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(see
technical data) can be assured.
Overowvalve(2)adjustingknob(1)
4. Ifyouleavethe“Settheoverowvalve”menuor
after one hour at the latest, the recirculating pump
switches back to its standard regulation.
5. Open valves to heating circuit.
14 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:
●  Cclockwise rotating load infeed eld is
available 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-off devices of the heating circuit are
open.
●The pipe systems and components of the
system are leaktight.
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
general checklist to the manufacturer’s
factory customer service department.
In other countries: Send notice of completion 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.

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15 Maintenance
NOTE
We recommend that you conclude a
maintenance agreement with an accredited
heating company.
15.1 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.
►Ensure compliance with local regulations with
regardtothespecicheatpumpsystem.
15.2 Maintenance as required
Yearly, more frequently if necessary:
●Checking and cleaning the components of the
heating circuit, e.g. valves, expansion vessels,
recirculatingpumps,lters,dirttraps.
●Test the function of the safety valve for the heating
circuit.
●Check regularly to ensure that the condensate
can drain out of the unit freely, without obstruction.
To this end, check the condensate pan in the unit
and the evaporator regularly for dirt / blockages
and clean as necessary.
15.3 Yearly maintenance
►Record the quality of the heating water analytically.
Incaseofdeviationsfromthespecications,take
suitable measures without delay.
15.4 Check evaporator and
condensate pan and clean if
required
Yearly, more frequently if necessary:
●Take off the front façade and the cover. This
allows access to the cleaning opening (1) and the
area below this between the evaporators.
1
●The whole area of the condensate trays in the
suction area (2) and the exhaust area (3) can be
seen here and can be cleaned if required.
3
2
Heat source
inlet sensor
Alternatively, the air ducts or the fan module can be
removed for better access.
15.5 Cleanandushcondenser
► Cleanandushthecondenserinaccordancewith
the manufacturer's instructions.
► After ushing the condenser with chemical
cleaning product: neutralise any residues and
ushthecondenserthoroughlywithwater.

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Subject to change without notice | 83059100aUK – Translation of the operating manual | ait-deutschland GmbH
16 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 to hand.
17 Dismantling and disposal
17.1 Dismantling
Unit is safely disconnected from the power supply
and secured against being switched back on
again.
►Collect all media safely.
►Separate components by their materials.
17.2 Disposal and recycling
►Dispose of environmentally hazardous media in
accordance with local regulations, refrigerant,
compressor oil, etc.
►Recycle or ensure proper disposal of unit
components and packaging materials in
accordance with local regulations.

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Technical data/Scope of supply
LWV 82R1/3
3,00 ı5,00
2,75 ı4,60
2,50 ı2,70
2,50 ı2,70
4,30 ı4,10
6,00 ı3,00
5,40 ı2,00
3,00 ı7,00
2,75 ı7,00
2,50 ı7,00
2,70 ı7,00
3,00 ı6,00
2,70 ı5,40
6,00 ı3,00
3,60 ı1,80
1,00 ı6,00
1,00 ı4,50
20 I 45
-22 I 35
A0/W60
— ı—
— ı35 ı40
— ı—
— ı40 ı45
40
2500
25
600 ı600 ı1200
600 ı600 ı1200
—ı0,14 ı1200
3
138
88 ı— ı16
R410A ı3,00
1~N/PE/230V/50Hz ıB16
1~N/PE/230V/50Hz ıB10
—
0,6 ı3,0 ı0,8
0,7 ı2,20
16 ı3,5
< 5 ı—
20
—ı— ı—
—
—
—
—
•
—
•
813577
LWV 122R3
5,50 ı 5,10
5,00 ı 4,80
4,20 ı 2,60
4,20 ı 2,60
6,50 ı 3,90
9,00 ı 2,80
8,00 ı 1,80
5,40 ı 11,50
5,10 ı 11,50
4,60 ı 11,50
4,50 ı 11,50
4,80 ı 9,00
4,20 ı 8,10
8,50 ı 2,80
5,00 ı 1,80
2,00 ı 8,50
2,00 ı 6,00
20 I 45
-22 I 35
A0/W60
— ı —
— ı 39 ı 44
— ı —
— ı 44 ı 49
44
2900
25
600 ı 850 ı 1900
— ı 0,2 ı 1900
3
154
104 ı — ı 16
R410A ı 3,60
3~N/PE/400V/50Hz ı B16
1~N/PE/230V/50Hz ı B10
—
1,05 ı 3,0 ı 0,8
1,0 ı 2,50
13 ı 6,0
< 5 ı —
20
—
—
—
—
— ı —
•
—
•
813578
Performance data
LWV
Heating capacity ı COP
At A10/W35 per EN14511 Partial load operation kW ı COP
4.00 ı 4.86
At A7/W35 per EN14511 Partial load operation kW ı COP
3.82 ı 3.74
At A7/W55 per EN14511 Partial load operation kW ı COP
3.51 ı 3.02
At A7/W55 per EN14511 Partial load operation kW ı COP
3.82 ı 3.74
At A2/W35 per EN14511 Partial load operation kW ı COP
3.51 ı 3.02
At A-7/W35 per EN14511 Full load operation kW ı COP 3.51 ı 3.02
At A-7/W55 per EN 14511 Full load operation kW ı COP
4.91 ı 5.74
Heating capacity At A10/W35 min. I max. kW ı kW
1.77 ı 8.65
At A7/W35 min. I max. kW ı kW
1.79 ı 8.42
At A7/W55 min. I max. kW ı kW
1.96 ı 8.18
At A2/W35 min. I max. kW ı kW
1.96 ı 8.18
At A-7/W35 min. I max. kW ı kW
1.96 ı 8.18
At A-7/W55 min. I max. kW ı kW
2.31 ı 10.60
Cooling capacity ı EER
At A35/W18 Partial load operation kW ı EER
1.96 ı 8.18
At A35/W7 Partial load operation kW ı EER
1.96 ı 8.18
Cooling capacity At A35/W18 min. I max. kW ı kW
1.77 ı 8.65
At A35/W7 min. I max. kW ı kW 1.79 ı 8.42
Operating limits
Heating circuit return min. I Heating circuit supply flow max.Heating °C
20 I 65
Heat source, heating min. I max. °C
-5 I 30
additional operating points …
B-9/W60
Sound
Sound pressure level at 1 m distance from edge of unit min. I max. inside dB(A)
29 ı 39
Sound pressure level at 1 m distance from edge of unit min. I Night I max. outside dB(A)
200 ı 720 ı 1500
Sound power level min. I max. inside dB(A)
44 ı 54
Sound power level min. I Night I max. outside dB(A)
200 ı 720 ı 1500
Sound power level per EN12102 dB(A)
44 ı 54
Heat source
Air flow rate at maximum external pressure m³/h
300 ı 1050 ı 2000
Maximum external pressure Pa
0.94 (0.89) ı 1050
Heating circuit
Volume flow rate: minimum I nominal analogue A7W35 (partial load operation) I maximum l/h
200 ı 720 ı 1500
Free pressing I Pressure loss I Volume flow rate bar I bar I l/h
0.67 (0.62) ı 520
max. allowable operating pressure bar
3
General unit data
Total weight kg
244 (252)
Weight, heat pump module I Compact module I Fan module kg I kg I kg
84 (92) ı 160 (160)
Refrigerant type ı Refrigerant capacity … ı kg
R407c ı 1.25
Electrics
Voltage code ı all-pole heat pump fuse protection *)**) … ı A
—
Voltage code ı Control voltage fuse protection **) … ı A
1~N/PE/230V/50Hz ı B10
Voltage code ı Electric heating element fuse protection **) … ı A
—
WP*): effect. Power input A7/W35 (partial load operation) EN14511 I Current draw I cosφ kW ı A ı … 0.82 ı 3.7 ı 0.97
WP*): effective power input A7/W35 per EN14511: min. I max. kW ı kW
0.24 ı 2.40
WP*): Max. machine current I Max. power input within the operating limits A ı kW
12 ı 2.9
Starting current: direct ı with soft starter A ı A
< 5 ı —
Degree of protection IP
20
Electric heating element output 3 I 2 I 1 phase kW I kW I kW
6 ı 3
Circulation pump power consumption, heating circuit min. — max. W
2 – 60 ı 3 – 140
Other unit information
Heating circuit safety valve included in scope of supply: • yes — no
• I —
Heating circuit expansion vessel included in scope of supply: • yes — no
— I —
Overflow valve I Changeover valve, heating -Domestic hot water integrated: • yes — no
• I •
Heating circuit vibration decouplers integrated: • yes — no
• I •
Controller integrated: • yes — no
•
Heat quantity recording integrated: • yes — no
•
*) Only compressor, **) Observe local regulations,
Drawing number