alphainnoTec LWAV alira User manual

UK
83059600eUK – Translation of the original operating manual
Air/water heat pumps
Operating manual
LWAV alira

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Subject to change without notice | 83059600eUK – 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 material damage...........................................5
3 Description............................................................................. 6
3.1 As-delivered condition............................................6
3.2 Design............................................................................... 6
3.3 Accessories...................................................................7
3.4 Function...........................................................................7
4 Operation and care........................................................8
4.1 Energy 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............................................................................. 8
5.3 Unpacking and transport.......................................9
5.4 Installation ....................................................................10
5.5 Noise ............................................................................... 11
6 Installation and connection..................................12
7 Attach the side panel, the rear panel,
the cover and the front panel.............................13
8 Installation of hydraulic system........................13
9 Electrical installation...................................................14
10 Flushing,llingandventing.................................15
10.1 Heating water quality.............................................15
10.2 Flushing,llingandventingtheheating
circuit ...............................................................................15
11 Insulation of hydraulic connections..............15
12 Settingtheoverowvalve.....................................15
13 Commissioning ................................................................16
14 Maintenance....................................................................... 17
14.1 Basic principles.........................................................17
14.2 Maintenance as required.....................................17
14.3 Annual maintenance .............................................. 17
14.4 Check the evaporator and the condensate
pan and clean them, if required ......................17
14.5 Cleaningandushingthecondenser.......... 17
15 Malfunctions........................................................................18
16 Dismantling and disposal ......................................18
16.1 Dismantling..................................................................18
16.2 Disposal and recycling..........................................18
Technical data/scope of supply ........................ 19
Performance curves......................................... 20
Dimensional drawings ...................................... 22
Installation plans .............................................. 26
Hydraulic integration options............................ 30
Circuit diagrams ............................................... 34
EC Declaration of Conformity .......................... 39

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
1 About this operating manual
This operating manual is an integral part of the unit.
►Before working on or with the unit, always read
the operating manual carefully and follow it for all
activities at all times, especially the warnings and
safety instructions.
►Keep the operating manual at hand at the unit and
hand it over to the new owner if the unit changes
hands.
►If you have any questions or if anything is unclear,
ask the local partner of the manufacturer or the
factory’s customer service.
►Observe all reference documents.
1.1 Validity
This operating manual refers solely to the unit identi-
edbythenameplateandunitsticker(“Nameplate”
on page 7).
1.2 Reference documents
The following documents contain additional informa-
tion to this operating manual:
●Heat pump guide, hydraulic integration
●Operating manual of the heating and heat pump
controller
●Short description of the heat pump controller
●Operating manual of the extension board
(accessories)
●Log book
1.3 Symbols and markings
Identicationofwarnings
Symbol Meaning
Safety-relevant information.
Warning of physical injuries.
DANGER Indicates an imminent danger re-
sulting 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 moder-
ate or minor injuries.
ATTENTION Indicates a potentially dangerous
situation, which can result in mate-
rial damage.
Symbols in the document
Symbol Meaning
Information for specialist
Information for operator
Prerequisite for an action
Single-step instruction for action
1, 2, 3 ... Numbered step within a multi-step
instruction for action. Adhere to the
given sequence.
Additional information, e.g. a note
for making work easier, information
on standards
Reference to further information
elsewhere in the operating manual
or in another document
●List

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
1.4 Contact
Addresses for purchasing accessories, for servicing or
for answers to questions about the unit and this oper-
ating 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 perfect technical condition
and only use it as intended, safely and aware of the
hazards and under full observance of this operating
manual.
2.1 Intended use
The unit is intended exclusively for the following func-
tions:
●Heating
● Domestichotwaterpreparation(optional,withac-
cessories)
●Cooling, reversible
►Intended use includes complying with the operating
conditions(“Technical data/scope of supply” on
page 19) and the operating manual and observ-
ing the reference documents.
►If local regulations apply, observe: laws, standards
and directives.
All other use of the unit is interpreted as not intended.
2.2 Personnelqualications
All instructions and information in this operating manu-
alareintendedexcusivelyforqualiedandskilledper-
sonnel.
Onlyqualiedand skilled personnel areabletocarry
out the work on the unit safety and correctly. Interfer-
encebyunqualiedpersonnelcanresultinfatalinju-
ries and material damage.
►Ensure that the personnel are familiar with the lo-
cal regulations, especially those relating to work-
ing safely and in awareness of the hazard risks.
►Have work on the electrical and electronic compo-
nentscarriedoutonlybyqualiedpersonnelwith
“electrical” training.
►Have any other work on the system carried out
onlybyqualiedandskilledpersonnel,e.g.
●Heating installers
●Plumbers
● Refrigeration plant manufacturers (maintenance
work)
During the warranty and guarantee period, servicing
and repair work 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 trans-
port.
2.4 Residual risks
Injuries caused by electric current
Components in the unit are live with fatal voltage. Be-
fore opening the unit casing:
►Disconnect the unit from power supply.
►Protect the unit against being switched back on
again.
►Residual voltage at the inverter. Wait for 90 sec-
onds before opening the unit.
Risk of injury from moving parts
►Only switch on the unit with air ducts and weather
protectiongridtted.
Injuries and environmental damage due to
refrigerant
The unit contains harmful and environmentally danger-
ous refrigerant. If refrigerant leaks out of the unit:
1. Switch off the unit.
2. Notify authorised after sales service.

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
2.5 Disposal
Environmentally hazardous media
Improper disposal of environmentally hazardous me-
dia(refrigerant)willdamagetheenvironment:
►Collect media safely.
►Dispose of the media in an environmentally sound
manner in accordance with to the local regula-
tions.
2.6 Avoid material damage
The ambient air at the heat pump’s installation site,
as well as the air drawn in as a heat source, must not
contain any corrosive components!
Constituents such as:
●Ammonia
●Sulphur
●Chlorine
●Salt
● Sewagegases,uegases
can cause damage to the heat pump, which can even
result in the complete failure/total loss of the heat
pump.
Decommissioning/draining the heating
If the system/heat pump is decommissioned or drained
after already being lled, it must be ensured that the
condenser and any heat exchangers have been
drained completely for the event of freezing temper-
atures. Residual water in heat exchangers and con-
densers can result in damage to the components.
►Completely drain the system and the condenser,
and open vent valves.
►Blow them clear with compressed air, if required.
Improper action
Requirements for minimum scale and corrosion dam-
age in hot water heating systems:
●Professional planning and commissioning
●Closed system with regard to corrosion
●Integration of an adequately dimensioned pres-
sure maintenance
●Use of demineralized water heating water or
VDI 2035 water
●Regular servicing and maintenance
If a system is not planned, commissioned and operat-
ed in accordance with the given requirements, there
will be a risk of the following damage and malfunctions:
●Malfunctions and failure of components, e.g.
pumps, valves
●Internal and external leaks, e.g. at heat exchangers
●Reduction in cross-section and blockages in com-
ponents, e.g. heat exchangers, pipes, pumps
●Material fatigue
● Gas bubble and gas cushion development (cavi-
tation)
●Negative effect on heat transfer, e.g. due to forma-
tion of deposits, and associated noises, e.g. boil-
ingnoises,ownoises
►Observe the information in this operating manual
for all work on and with the unit.
Unsuitablequalityofthewaterforllingup
and replenishing the heating circuit
Theefciencyofthesystemandtheservice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,cal-
cium deposits will form as scale. Lime scale deposits
accumulate on the heat transfer surfaces of the heat-
ing. The efciency is reduced and energy costs in-
crease. In extreme cases, the heat exchangers will be
damaged.
►Fill the system only with demineralized heating
water or VDI 2035 water.

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
3 Description
3.1 As-delivered condition
3
4
5
1
2
1 Side panels with design grille
2 Cover and base frame
3 Packaging,packageleaet
4 Supportingcrosspiece(leftandright–
only remove after transport!)
5 Carryingstraps(with
openings for carrying)
3.2 Design
NOTE
This section essentially names the compo-
nents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(canberemovedifrequired)
3 Fan(radial)
4 Cooling circuit module
The cooling circuit module:
16
4
2
3
5
7
8
1 Electrical switch box
2 Plug connection to the fan module
3 Condenser
4 Expansionvalve(heating)

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
5 Expansion valve
6 Compressor(ininsulationhousing)
7 Filter dryer
8 Inverter unit
Nameplate
The nameplate is attached at the following point on the
unit:
●The nameplate is on the back, it contains the fol-
lowing information at the very top:
●Model, item 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 via
the manufacturer’s local partner:
●Connection set, hydraulic
●Connection set, electrical
●Domestic hot water tank
●Buffer tank
●Room thermostat for switching the cooling function
●Dew point monitor for protecting a system with
coolingfunctionatlowowtemperatures
●Room control panel for controlling the main func-
tions at the living quarters
●Extension board
3.4 Function
Liquidrefrigerantisevaporated(evaporator).Theen-
ergy for this process is ambient heat coming from the
outside air. The gaseous refrigerant is compressed
(compressor),whichincreasesthepressure andthus
also the temperature. The gaseous refrigerant with
hightemperatureisliqueed(condenser).
Here, the high temperature is transferred to the heat-
ing water and used in the heating circuit. The liquid re-
frigerant with high pressure and high temperature is
expanded (expansion valve). The pressure and tem-
perature drop and the process restarts.
The heated heating water can be used for the domestic
hot water or for heating the building. The temperatures
required and the use are controlled by the heat pump
controller. Any required reheating, support in screed
drying or increase in the domestic hot water temper-
ature can be carried out using an electric heating ele-
ment, which is activated by the heat pump controller
as required.
The integrated vibration decoupling for the hydraulic
system prevents structure-borne sound and vibrations
from being transferred to the xed pipes and thus to
the building.
Cooling
Cooling is integrated in the units. The following op-
tionsarepossibleforthecoolingfunction(operating
manual of the heating and heat pump controller):
●Active cooling
Cooling in combination with hydraulic module or
hydraulicstationuptoaminimumowtemperature
of 18 °C. In combination with wall-mounted control-
leruptoaminimumowtemperatureof7°C.
●The cooling function is controlled via the heating
and heat pump controller
●Switching over between heating and cooling mode

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
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 that are heav-
ier than 30 kg.
5.1 Scope of supply
►Check supplied packages immediately on receipt
for visible signs of damage and completeness.
►Notify the supplier of any complaints immediately.
The separate package included contains:
● 3angeseals,5/4"
● 4angeseals,1"
●1 tube anti-friction agent
●1 HT sheet, DN 40 mm 87°
●1 protective cover for plug
●4 EPP screws
● Documents (operating manuals, ERP data and
labels)
●Type stickers
In panel packages:
●Cover, front panel, rear panel, side panels
5.2 Storage
►If possible, do not unpack the unit until immediately
before installation.
►Store the unit protected against:
●Moisture
●Frost
●Dust and dirt
4 Operation and care
NOTE
The unit is operated via the control panel of
theheatingandheatpumpcontroller(op-
erating manual of the heating and heat pump
controller).
4.1 Energy and environmentally
aware operation
The generally applicable requirements for energy and
environmentally aware operation of a heating system
also apply to the use of a heat pump. The most impor-
tant measures include:
● Nounnecessarilyhighowtemperature
●No unnecessarily high domestic hot water temper-
ature(observelocalregulations)
● Donotopenwindowswithgap/intiltposition(con-
tinuous ventilation), but instead open wide for a
shorttime(shockventilation).
●Always ensure that the controller setting is correct
4.2 Care
Wipe down the outside of the unit only using a damp
clothorclothwithmildcleaningagent(washing-upliq-
uid, neutral cleaning agent). Do not use any aggres-
sive, abrasive, acid or chlorine-based cleaning agents.

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
5.3 Unpacking and transport
Notes on safe transport
Theunitisheavy (“Technical data/scope of supply”
on page 19). There is a risk of injuries or material
damage if the unit falls down 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 me-
chanical loads.
►Do not lift or transport the unit by the hydraulic con-
nections.
Transport the unit preferably with a lift truck, alterna-
tively with a handcart or by carrying it.
►Do not tilt the heat pump module by more than 45°.
►The tensioning straps on the heat pump module
may only be used for carrying by hand.
Transport by crane
►Transport the unit to the installation site in pack-
aged form and secured on a wooden pallet.
40-50°
 Packageleaet
Transport with a lift truck
►Transport the unit to the place of installation in
packaged for, and secured on a wooden pallet.
Unpacking:
1. Removeplasticlms.Ensurethatyoudonotdam-
age the unit.
2. Dispose of the transport and packaging material in
an environmentally sound manner and in accord-
ance with local regulations.
Lift panels off the pallet and set them down.
If the unit is not transported by a lift truck: Do not lift
the unit off the pallet until the panels have been un-
packed and lifted off the pallet.
●The cover, the front panel, the rear panel and the
side panels are in the panel packages, in front of
the unit, behind it and on the unit.
Optional separation of the fan module
NOTE
If required (tight passages), the fan module
can be removed.
1. Disconnect the plug connections of the load and
bus cables at the top left on the switch box of the
cooling circuit for the fan module.
2. Remove the 4 screws from the fan module.
3. Pull off the fan module.
4. Break off the protruding links on the polystyrene
cross-pieces.
1
33
33
2
1 Tensioning straps with openings for carrying
2 Polystyrene links
3 Screws on the fan module

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
Carrying the unit, transport using handcart
The housing panels have been set down.
There are two circumferential tensioning straps on the
heat pump module with openings at different heights
that can be used for lifting and carrying.
Two support crosspieces are clamped into the re-
cesses at the sides for the air ducts for stability –
do not remove them both until after transport.
Transport of the heat pump module with
a handcart
1. Only load the heat pump module on to the hand-
cart with the narrow side, left or right.
2. Secure the heat pump module on the handcart
with a tensioning strap.
3. Transport the heat pump module to the installa-
tion site.
5.4 Installation
Installation 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 lay-
er can therefore develop in the air outlet ar-
ea. Install the heat pump so that the air blow-
er does not discharge into footpath areas .
NOTE
Always comply with the installation plan for
the respective model. Note the size and mini-
mum clearances.
Installation plan for the respective model.
NOTE
Install the unit so that the switch box side
(=controlside)isaccessibleatalltimes.
Installation site requirements
●Perform installation outdoors only
Clearance dimensions were complied with “In-
stallation plans” on page 26.
Noise data on Page 11
Free air intake and blowing air are pos-
sible without any air short-circuit.
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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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
5.5 Noise
The noise immissions 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 complied with.
NOTE
The following sound pressure levels are calculated values. Other installation situations, other adjacent
buildingsorevensound-reectingsurfacescanresultinalevelincrease.Precisedetailsoftherespective
sound pressure level can only be determined by measurement on site, if the heat pump has already been
installed.
Regional regulations are not taken into account in the table values. Allowances for tonality,
background level etc. must be added accordingly, if necessary.
The following sound pressure levels result, depending on the distance and installation variant with directivity Q. All data
indB(A):
LWAV 82R1/3
Distance in m 1234567891011 12 13 14 15 16 17 18 19 20
Q2 sound pressure level 50 44 40 38 36 34 33 32 31 30 29 28 28 27 26 26 25 25 24 24
Q2 Silent Mode sound
pressure level
44 38 34 32 30 28 27 26 25 24 23 22 22 21 20 20 19 19 18 18
Q4 sound pressure level 53 47 43 41 39 37 36 35 34 33 32 31 31 30 29 29 28 28 27 27
Q4 Silent Mode sound
pressure level
47 41 37 35 33 31 30 29 28 27 26 25 25 24 23 23 22 22 21 21
Q8 sound pressure level 56 50 46 44 42 40 39 38 37 36 35 34 34 33 32 32 31 31 30 30
Q8 Silent Mode sound
pressure level
50 44 40 38 36 34 33 32 31 30 29 28 28 27 26 26 25 25 24 24
LWAV 122R3
Distance in m 1234567891011 12 13 14 15 16 17 18 19 20
Q2 sound pressure level 50 44 40 38 36 34 33 32 31 30 29 28 28 27 26 26 25 25 24 24
Q2 Silent Mode sound
pressure level
45 39 35 33 31 29 28 27 26 25 24 23 23 22 21 21 20 20 19 19
Q4 sound pressure level 53 47 43 41 39 37 36 35 34 33 32 31 31 30 29 29 28 28 27 27
Q4 Silent Mode sound
pressure level
48 42 38 36 34 32 31 30 29 28 27 26 26 25 24 24 23 23 22 22
Q8 sound pressure level 56 50 46 44 42 40 39 38 37 36 35 34 34 33 32 32 31 31 30 30
Q8 Silent Mode sound
pressure level
51 45 41 39 37 35 34 33 32 31 30 29 29 28 27 27 26 26 25 25
The directivity Q for the different installation variants:
Q = 2
Q = 4
Q = 8
Q = 2
Q = 4
Q = 8
Q = 2
Q = 4
Q = 8
The directivity Q for the different installation variants:
Q2:Outdoorinstallationwithoutsoundreection  Q4:Airoutlet/airintakeatthewall

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
Q8:Airoutlet/airintakeat thewall(cornerinstallation
less than 3 m, or opposite wall less than 5 m, or roof
less than 3 m. There may be a maximum of two walls
orroofs,otherwise, anallowanceof3dB(A)mustbe
added for each additional wall or roof.)
In case of 2 or more units of the same heat pump mod-
el, the respective level increase must be added to the
corresponding sound pressure level from the following
table:
Number of n 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 case of two different, not equally loud units, the level
increase is read off at 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 addi-
tional 1.2 dB.
6 Installation 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 develop in the air outlet area. In-
stall the heat pump so that the air blower does
not discharge into footpath areas .
Unit installation
1. Align the unit base horizontally using the spirit level
and attach it to a strip foundation or full-area foun-
dation with 4 screws.
2. Unscrew the 4 levelling feet of the heat pumps by
2 turns.
3. Lift the heat pump over the unit base and place it
with the levelling feet in the holes provided in the
unit base. Push the levelling feet under the con-
striction of the holes.
4. Tighten the lock screws on the levelling feet
through the openings in the unit base using the
wrenchuntiltheheatpumpistightenedrmlyon
the unit base.
Heat pump installation instructions

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
5. Remove the two tensioning straps.
6. Open the tension lock, turn the hook on the base
plate by 90°:
Heat pump installation instructions
7. Remove the two polystyrene crosspieces.
7 Attach the side panel,
the rear panel, the cover
and the front panel
Heat pump installation instructions
1. Fasten the rear panel.
2. Fit the cover.
3. Hook in the side panels. Fasten them in the front
at the center using a screw.
4. Attach the front panel.
5. Remove the protective lm from the logo on the
front wall.
8 Installation of
hydraulic system
NOTE
If an existing unit is replaced, the old vibration
decoupling parts must not be reused.
NOTE
Before connecting to the heating system, the
heatingcircuitmustbethoroughlyushed.
ATTENTION
Damage to the copper pipes due to impermissible load!
►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 pumps pro-
duces at least the minimum throughput required for
themodel(“Technical data/scope of supply” on
page 19).
The hydraulic system must be equipped with a
buffer tank, the required volume of which depends
on your model.
Buffer tank volume = nominal water ow rate / 10
The lines for the heating are fastened to the wall or
ceilingviaaxedpoint.
3
1
2
1 Heating water supply
2 Condensatetting
3 Heating water return

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
1. Insert the vent at the highest point of the heating
circuit.
2. Ensurethattheoperatingoverpressures(“Tech-
nical data/scope of supply” on page 19) are
complied with.
Condensate connection
The heating water drained from the safety valve and
the condensate that accumulates from the air must be
discharged in compliance with the applicable stand-
ards and regulations. Discharge of the condensate and
of the water drained from the safety valve into the sew-
age system is permitted only via a funnel waste trap,
which must be accessible at all times.
Condensate line connection
Heat pump installation instructions
Hydraulic connection to the unit
Mount the corresponding connection set.
Installation instructions for connection set
9 Electrical installation
Establishing the electrical connections
ATTENTION
Irreparable damage to the compressor due to wrong
rotatingeld!
► Ensureaclockwiserotatingeldforthecompres-
sor’s load supply.
Basic information relating to the electrical
connection
● Anyspecicationsbythelocalenergysupplycom-
pany apply to electrical connections.
●Equip the power supply for the heat pump with an
all-pole circuit breaker with at least 3 mm contact
spacing(accordingtoIEC60947-2).
●If required, residual current circuit breaker type A
issufcient.
● Notethetrippingcurrentlevel(“Technical data/
scope of supply” on page 19).
●Comply with the electromagnetic compatibility
regulations(EMCregulations).
●Install the control and sensor cables and unit sup-
plycablesufcientlyfarapart(>100mm).
●Install unshielded power supply cables and
shieldedcables(buscables)sufcientlyfarapart.
●Do not increase the length of the patch cable or
bus cable. Bus cables up to a length of 30 m can
be used if the quality of the cable matches that of
the original cable.
Connecting the heat pump module to
the hydraulic module, the hydraulic station
or the wall-mounted controller
The connection is established using the EVS or EVS 8
accessories. EVS 8 load and bus connector with 8 m
cable. A maximum of 3 EVS 8 connections are pos-
sible. EVS load and bus connector (cable on site)
with maximum cable length of 30 m. For the 12 kW
unit, a 5 x 2.5 mm² cable with protective conductor is
recommended as the load line. For the 8 kW unit, a
3 x 2.5 mm² cable with protective conductor is recom-
mended. At least a 4 x 0.5 mm² shielded cable should
be used as the bus cable.
1. Route the two plug-in connections of the load and
bus cables to the slots on the heat pump module.
2. Join the connections.
3. Fit the cover for the plug connections.

15
Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
10 Flushing,llingandventing
10.1 Heating water quality
NOTE
●Detailed information is also provided in VDI
Guideline 2035 “Vermeidung von Schäden
in Warmwasserheizanlagen” (Avoiding
damage to hot water heating systems).
●Required pH value: 8.2 ... 10
●For aluminium materials: pH value: 8.2 ... 8.5
►Fill the system with demineralized heating water
onlyorVDI2035water(low-saltoperationofthe
system).
Advantages of low-salt operation:
●Low corrosion properties
●No development of scale
●Ideal for closed heating circuits
● Ideal pH value due to self-alkalinisation after ll-
ing the system
●If necessary, simple alkalinisation to a pH value of
8.2 by adding chemicals
10.2 Flushing,llingandventing
the heating circuit
Outlet pipe of the safety valve is connected.
►Ensure that the response pressure of the safety
valve is not exceeded.
NOTE
The venting program on the controller can
alsobeusedtosupporttheushingandvent-
ing process. It is possible to control individual
circulation pumps and even the changeover
valve via the venting programs. As a result it
is not necessary to remove the valve motor.
1. Vent the system at the highest point.
2. Vent the heat pump at the hydraulic connection set.
11 Insulation of hydraulic
connections
Insulate hydraulic lines in accordance with the 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unitisusedforcoolingbelow18°C(onlypos-
sible in combination with the wall-mounted control-
ler), the insulation must be vapour diffusion-tight.
6. Insulate the condensate drain in a frost-proof
manner.
7. Fit the cover hood on the connection set.
8. The unit must be completely closed on all sides to
ensure rodent protection.
12 Settingtheoverowvalve
NOTE
●The activities in this section are only nec-
essary for the integration of the storage
tank in series.
●Complete the work steps quickly, otherwise
the maximum return temperature could be
exceeded and the heat pump will switch to
high-pressure fault.
● Turntherotary-pushbuttonontheoverow
valve to the right to increase the tempera-
ture difference (the spread), turn it to the
left to reduce it.
Thesystemisrunninginheatingmode(ideallyin
cold condition).
The IBN assistant already provides the option, in the
event of the integration of the storage tank in series to
adjust the overow valve according to to the hydrau-
lic system.

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Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
ConrmtheIBNassistantormakethesettingvia:
 Service>>Settings>>
Energyefcientcirculationpump:
The“Setoverowvalve”menuitemissetbydefaultto
“No”.Theoverowvalveadjustmentfunctionisdeac-
tivated.
●The UWP control signal is the indication of the
currently required pump capacity in %
● Iftheowrateisthecurrentowrate
(measuringaccuracy+/-200l/h)
1. Fully open the overow valve, close the heating
circuits
2. Ifthe “Set overow valve”menuitemis set from
“No” to “Yes”, the circulation pump is activated
with100%–andthepumpstartsup.
3. If the control signal UWP reaches 100%, close
theoverowvalvetotheextentthatthemaximum
owrate(seetechnicaldata)canbeensured.
Overowvalve(2)rotary-pushbutton(1)
4. Ifyouexitthe“Setoverowvalve”menuor
at the latest after one hour, the circulation
pump switches back to standard regulation
5. Open valves to heating circuit.
13 Commissioning
Relevant planning & design data of the system is
documented in full.
The relevant energy supply company has been
notiedofoperationoftheheatpumpsystem.
The system is air-free.
Installation check using the general checklist has
been completed successfully.
1. Ensurethatthefollowingpointsarefullledcom-
pletely:
● Right-hand (clockwise) rotating load supply
eldisavailableatthecompressor.
●The system is installed and mounted accord-
ing to this operating manual.
●The electrical installation has been carried out
properly according to this operating manual
and the local regulations.
●The power supply for the heat pump is
equipped with an all-pole circuit-breaker with
atleast3mmcontactspacing(IEC60947-2).
●The tripping current is complied with.
●Theheatingcircuithasbeenushedandvented.
●All shut-off devices of the heating circuit are
open.
●The pipe systems and components of the sys-
tem are tight.
2. Carefully ll in and sign the notice of completion
for the 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 depart-
ment. 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 com-
missioned by the manufacturer’s authorised after
sales service for a fee.

17
Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
14 Maintenance
NOTE
We recommend that you conclude a mainte-
nance agreement with your specialist heating
company.
14.1 Basic principles
The cooling circuit of the heat pump does not require
any regular maintenance.
Localregulations–e.g.EUdirective(EC)517/2014–
specify tightness checks beforehand and/or for a log
book to be kept for certain heat pumps.
►Ensure compliance with the local regulations re-
latingtothespecicheatpumpsystem.
14.2 Maintenance as required
Annually, more frequently as required:
●Check and clean the components of the heating
circuit, e.g. valves, diaphragm expansion vessels,
circulationpumps,lters,dirttraps.
●Test the function of the safety valve for the heat-
ing circuit.
●Check at regular intervals 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/clogging and
clean as necessary.
14.3 Annual maintenance
►Determine the quality of the heating water by
analysis. In the event of deviations from the speci-
cations,takesuitablemeasureswithoutdelay.
14.4 Check the evaporator and the
condensate pan and clean them,
if required
Annually, more frequently if necessary:
●Remove the front panel and the cover, thus gain-
ing access to the cleaning opening (1) and the
area below between the evaporators.
1
●The entire condensate pan area with the intake
area(2)andtheblow-outarea(3)canbeviewed
here and cleaned, if necessary.
3
2
Heat source
inlet sensor
As an alternative, the air ducts or the fan module can
be removed to obtain additional access.
14.5 Cleaningandushing
the condenser
► Clean and ush the condenser according to the
manufacturer’s instructions.
► Afterushingthecondenserwithchemicalclean-
ing agent: neutralise any residues and ush the
condenser thoroughly with water.

18
Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
15 Malfunctions
►Read out the cause of the malfunction via the diag-
nostic program of the heating and heat pump con-
troller.
►Consult the local partner of the manufacturer or
the factory’s customer service. Have the fault
message and unit number at hand.
16 Dismantling and disposal
16.1 Dismantling
The unit is disconnected from the power supply
and protected against being switched back on
again.
►Collect all media safely.
►Separate components by their materials.
16.2 Disposal and recycling
►Dispose of environmentally hazardous media ac-
cording to the local regulations, e.g. refrigerant,
compressor oil ...
►Ensure the correct recycling or disposal of unit
components and packaging materials in accord-
ance with the local regulations.

19
Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
Technical data/scope of supply LWAV
LWAV 82R1/3
3,00 ı 5,00
2,75 ı 4,60
2,50 ı 2,70
2,50 ı 2,70
4,30 ı 4,10
6,00 ı 3,00
5,40 ı 2,00
3,00 ı 7,00
2,75 ı 7,00
2,50 ı 7,00
2,70 ı 7,00
3,00 ı 6,00
2,70 ı 5,40
6,00 ı 3,00
3,60 ı 1,80
1,00 ı 6,00
1,00 ı 4,50
20 I 45
-22 I 35
A0/W60
— ı —
— ı 42 ı 48
— ı —
— ı 52 ı 58
52
2500
25
600 ı 600 ı 1200
— ı 0,14 ı 1200
3
132
88 ı — ı 16
R410A ı 3,00
1~N/PE/230V/50Hz ı B16
1~N/PE/230V/50Hz ı B10
—
0,6 ı 3,0 ı 0,8
0,7 ı 2,20
16 ı 3,5
< 5 ı —
20
— ı — ı —
—
—
—
—
•
—
•
813581a
LWAV 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 43 ı 48
— ı —
— ı 53 ı 58
53
2900
25
600 ı 850 ı 1900
— ı 0,2 ı 1900
3
148
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 —
•
—
•
813582a
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

20
Subject to change without notice | 83059600eUK – Translation of the original operating manual | ait-deutschland GmbH
Performance curves LWAV 82R1/3
Volumenstrom Heizwasser
Temperatur Wärmequelle
Temp” Temperatur Heizwasser
∆pmax maximaler Druckverlust
minimale/maximale Heizleistung
Bezeichnung:
Seite: 1
823290
Legende:
“”
Temp„
Datei: 823290 Leistungs- Druckverlustkurven LWV 82R1_3
Änd./Ä.M./Ersteller/Datum
Leistungs-Druckverlustkurven
- / PEP017-2016 / Döring / 17.07.2017
LWV 82R1/3
Qh min/max
Zeichnungsnummer: 823290
0
1
2
3
4
5
6
7
8
9
10
11
12
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35
Temp„ [°C]
Qh min/max [kW]
35°C
55°C
0,0
0,1
0,2
0,3
00,5 11,5 22,5 3
“ ” [m³/h]
∆pmax [bar]
15
20
25
30
35
40
45
50
55
60
65
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40
Temp” (C
°)
Temp„ [°C]
823290
Key:
“” Heating water ow rate
Temp„ Heat source temperature
Temp” Heating water temperature
∆pmax Maximum pressure loss
Qh min/max Minimum/maximum heating load