alphainnoTec LWDV User manual

UK
Operation manual
LWDV
Air/water heat pumps
Dual/outdoor installation
83055800cUK – Translation of the operating manual

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Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
Table of contents
1 About this operation 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 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 material damage...........................................5
3 Description.............................................................................6
3.1 Condition on delivery:............................................. 6
3.2 Design............................................................................... 6
3.3 Function ...........................................................................6
4 Operation and care........................................................ 7
4.1 Energy and environmentally aware
operation.........................................................................7
4.2 Care....................................................................................7
5 Delivery, storage, transport and
installation...............................................................................7
5.1 Scope of delivery .......................................................7
5.2 Storage............................................................................. 7
5.3 Unpacking and transport.......................................8
5.4 Installation......................................................................8
5.5 Installation with a wall bracket...........................9
5.6 Installationonaoorbracket .............................9
6 Installation of hydraulic system........................10
6.1 Condensate drain ...................................................10
6.2 Connection to the heating circuit....................10
6.3 Pressure safety......................................................... 11
7 Electrical installation................................................... 11
8 Flushing,llingandventing.................................12
8.1 Heating water quality.............................................12
8.2 Flushing,llingandventingtheheating
circuit ...............................................................................12
9 Insulation of hydraulic connections..............12
10 Settingtheoverowvalve.....................................12
11 Commissioning................................................................13
12 Maintenance.......................................................................14
12.1 Basic principles.........................................................14
12.2 Maintenance as required.....................................14
12.3 Annual maintenance..............................................14
12.4 Cleaningandushingthecondenser..........14
13 Malfunctions........................................................................14
14 Dismantling and disposal ......................................14
14.1 Dismantling..................................................................14
14.2 Disposal and recycling..........................................14
Technical data/scope of delivery...................... 15
Performance curves......................................... 16
Dimension drawings......................................... 17
Installation protected zones ............................. 18
Installation plan ................................................ 19
Installation plan for wall bracket ....................... 20
Installationplanforoorbracket ...................... 21
with wall duct.................................................... 21
Installation plans .............................................. 22
Installationplanforoorbracket ...................... 22
with hydraulic connection line .......................... 22
Drill template for wall bracket ........................... 23
Drill template for wall bracket ........................... 24
View of foundation for V3 ................................. 25
Hydraulic integration options............................ 26
View of foundation for V4 ................................. 26
Minimum clearances ........................................ 27
External
condensate line connection ............................. 28
Internal
condensate line connection ............................. 29
Hydraulic integration options............................ 30
Circuit diagrams ............................................... 34
EC Declaration of Conformity .......................... 39

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Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
1 About this operation manual
This operation manual is an integral part of the device.
►Before working on or with the device, always read
the operation manual carefully and follow it for all
activities at all times, especially the warnings and
safety instructions.
►Keep the operation manual at hand at the device
and hand it over to the new owner if the device
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 operation manual refers solely to the device identi-
edbythenameplate( “Nameplate” on page 6).
1.2 Reference documents
The following documents contain additional informa-
tion to this operation manual:
●Heat pump guide, hydraulic integration
●Operation manual for the heating and heat pump
controller
●Short description of the heat pump controller
● Operationmanualfortheextensionboard(acces-
sory)
●Operation manual for the hydraulic unit
1.3 Symbols and markings
Identicationofwarnings
Symbol Meaning
Safety-relevant information. Warn-
ing 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 prop-
erty damage.
Symbols in the document
Symbol Meaning
Information for specialists
Information for the owner
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 operation manual
or in another document
●List

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Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
1.4 Contact
Addresses for purchasing accessories, for servicing or
for answers to questions about the device and this op-
eration 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 device if it is in perfect technical condi-
tion and only use it as intended, safely and aware of
the hazards and under full observance of this operation
manual.
2.1 Proper use
The device is intended exclusively for the following
functions:
●Heating
● Domestichotwaterpreparation(optional,
with accessories)
●Proper use includes complying with the operating
conditions( “Technical data/scope of delivery”
on page 15) and the operation manual and ob-
serving the reference documents.
►When using the device, observe local regulations:
laws, standards and directives.
Any other use of the device shall be considered im-
proper use.
2.2 Personnelqualications
All instructions and information in this operation manu-
alareintendedexclusivelyforqualiedandskilledper-
sonnel.
Only qualied and skilled personnel are able to carry
out the work on the device safety and correctly. Interfer-
encebyunqualiedpersonnelcanresultinfatalinjuries
and material damage.
►Ensure that personnel are familiar with local regu-
lations, especially those relating to working 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
trainingintheeldof“electricalcomponents”.
►Have any other work on the system carried out by
qualiedandskilledpersonnelonly,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 device.
►Wear cut-resistant protective gloves during trans-
port.
2.4 Residual risks
Injuries caused by electric current
Components in the device are live with fatal voltage.
Before opening the device casing:
►Disconnect the device from the power supply.
►Protect the device against being switched back on
again.
►Residual voltage at the inverter. Wait for 90 sec-
onds before opening the device.
Risk of injury from moving parts
►Only switch on the device when the covers and
fanprotectiongrillearetted.
Injuries and environmental damage due to
refrigerant
Thedevicecontainsammable,harmfuland environ-
mentally dangerous refrigerant. If refrigerant leaks out
of the device, there is a risk of explosion:
1. Switcho󰀨thedevice.
2. Notify an authorised after sales service.
3. Keep away from sources of ignition.

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Subject to technical amendments without prior notice | 83055800cUK – Translation of the 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 the local regulations.
2.6 Avoid material damage
The ambient air at the heat pump’s installation site and
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 in the event of freezing tempera-
tures. 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 heat-
ing water or VDI 2035 water
●Regular servicing and maintenance
If a system is not planned, commissioned and operated
in accordance with the given requirements, there is 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e󰀨ectonheattransfer,e.g.duetoforma-
tion of deposits, and associated noises, e.g. boiling
noises,ownoises
►Observe the information in this operation manual
for all work on and with the device.
Unsuitablequalityofthewaterforllingand
replenishing the heating circuit
Thee󰀩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. Limescale deposits ac-
cumulate on the heat transfer surfaces of the heating.
E󰀩ciencyisreducedandenergycostsincrease.Inex-
treme 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 technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
3 Description
3.1 Condition on delivery:
Packaged heat pump.
Separate package:
3.2 Design
1 Condenser
3 Evaporator
5 Fan
2 Compressor
4 Switch box
6 Inverter
Nameplate
The nameplate is attached at the following position on
the device:
●On the rear, it contains the following information at
the very top:
●Device type, item number
●Serial number
The nameplate also contains an overview of the most
important technical data.
Functionally necessary accessories
Only use genuine accessories made by the manufac-
turer of the device.
●Hydraulic station
●Hydraulic module
Additional accessories
●Wall duct with vibration decoupling
●Wall bracket
●Floor bracket
●Vibration decoupling
● Bu󰀨ertank
● Overowvalve
●Cladding for wall bracket
● Claddingforoorbracket
●Hydraulic connection line
●Extension board
●Room control panel
Ifthecableisnotlongenoughforfreeeldinstallation,
an extension set can be ordered.
3.3 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 at high
temperatureisliqueed(condenser).
In the process, the high temperature is transferred to
the heating water and used in the heating circuit. The
liquid refrigerant at high pressure and high tempera-
tureisexpanded(expansionvalve).Thepressureand
temperature drop and the process restarts.
The heated heating water can be used for domestic hot
water or for heating the building. The temperatures re-
quired and the use are controlled by the heat pump con-
troller. Any required reheating, support in screed drying
or increase in the domestic hot water temperature can
be carried out using an electric heating element, which
is activated by the heat pump controller as required.
The vibration decoupling (accessory) for the hydraulic
system prevents structure-borne sound and vibrations
frombeingtransferredtothexedpipesandthustothe
building.

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Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
4 Operation and care
NOTE
The device is operated via the control panel
of the heating and heat pump controller
( operation manual for 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 a gap/in a tilted posi-
tion (continuous ventilation), but instead open
themwideforashorttime(shockventilation).
●Always ensure that the controller setting is correct
4.2 Care
Wipeo󰀨theoutsideofthedeviceonlyusingadampcloth
or cloth with mild cleaning agent (washing-up liquid,
neutral cleaning agent). Do not use any aggressive,
abrasive, acid or chlorine-based cleaning agents.
5 Delivery, storage, transport
and installation
ATTENTION
Damage to the housing and the device components
due to heavy objects.
►Do not place any objects that are heavier than 30 kg
on the device.
5.1 Scope of delivery
►Check the delivery immediately on receipt for visi-
ble signs of damage and for completeness.
►Notify the supplier of any complaints immediately.
The separate package included contains:
● Documents (operation manuals, ERP data and
labels)
●Type stickers
●1 condensate drain pipe nozzle
●3 fastening screws
● 1sealingplateforoorduct
●1 long torx bit for panel screws
●Load compressor plug for connection to hydrau-
lic unit
● Buslineplug(communication)forconnectionto
hydraulic unit
●Control voltage plug for connection to hydraulic
unit
●Logo sticker for hydraulic unit
NOTE
The outdoor sensor is included in the
scope of delivery for the hydraulic unit
5.2 Storage
►If possible, do not unpack the device until immedi-
ately before installation.
►Store the device protected against:
●Moisture
●Frost
●Dust and dirt

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Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
5.4 Installation
Preparation for installation, together with
the wall duct
Toconnecttheoutdoorunittotheindoorpart(hydraulic
unit), there must be a suitable opening for the wall duct
(accessory)oranopeninghastobecutoutinorderto
inserttheØ125mmwastewaterpipe(=wallductac-
cessory).
If the wall duct is not yet present, you can also use a
commercially available waste water pipe, length 1 m,
DN 125 in advance.
NOTE
Always comply with the installation plan for
the respective device type. Observe the mini-
mum clearances and protected zones.
Installation plan, dimension drawings and scopes
of protection for the respective device type.
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.
Install the heat pump so that the air coming
from the air outlet opening is not discharged
into footpath areas.
NOTE
The surface in the air outlet area of the heat
pump must be permeable to water.
If the wall duct is not used, the bus cable
must be routed through a separate cable con-
duit, separated from the other cables.
The other two cables also have to be routed
using empty conduits on site.
NOTE
The noise immissions 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 complied
with.
5.3 Unpacking and transport
Notes on safe transport
Thedeviceisheavy( “Technical data/scope of de-
livery” on page 15). There is a risk of injuries or ma-
terial damage if the device falls down or overturns.
There is a risk of cutting your hands on sharp edges of
the device.
►Wear cut resistant protective gloves.
The hydraulic connections are not designed for mechan-
ical loads.
►Do not lift or transport the device by the hydraulic
connections.
Transport the device with a pallet truck if possible, or
alternatively carry it
►Do not tilt the heat pump by more than 45°.
Transport with a pallet truck
►Transport the device to the installation site in
packaged form, and secured on a wooden pallet.
Unpacking:
1. Removeplasticlms. Makesure thatyoudonot
damage the device when doing this.
2. Dispose of the transport and packaging material in
an environmentally sound manner and in accord-
ance with local regulations.
Carrying the device
NOTE
The device is delivered on a pallet with mount-
ing rails. The mounting rails can be used for
transport.
Mounting rail

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Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
Installation site requirements
●Only install outdoors
Clearance dimensions were complied with
 “Installation plans”
Noisespecicationsonpage15
Free air intake and blowing air are pos-
sible without any air short-circuit.
Thesurface/oorissuitableforinstallationofthedevice:
●Level and horizontal
●With load-bearing capacity for the device’s weight
5.5 Installation with a wall bracket
“Wall bracket installation instruction”
“Wall duct installation instruction”
“Installation plans/minimum clearances/
drill template”
The wall bracket is only suitable for solid, load-bearing
walls. In a timber-frame construction with facing, the
oorbracketshouldbeusedduetothepossibletrans-
fer of structurally borne sound to the interior.
5.6 Installationonaoorbracket
The device can be installed near a wall or as a free
eldinstallation. Ideally, theheat pumpshould bein-
stalled where it is protected from wind. If this is not
possible, we recommend installing it at right angles
to the prevailing direction of wind or air ducting in the
main wind direction.
Placethedeviceonaload-bearing,rmandhorizontal
foundation. The foundation must not be connected to
the building Make sure that the foundation is designed
for the weight of the heat pump.
“Floor bracket installation instruction”
“Wall duct installation instruction”
“Installation plans/minimum clearances/
view of foundation”
NOTE
When installing with a wall duct, make sure
the wall clearance is correct.

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Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
6 Installation of hydraulic
system
6.1 Condensate drain
The condensate precipitated from the air must be re-
moved frost-free via a plastic condensate pipe with a
minimum diameter of 40 mm. If surfaces are water per-
meable, it is su󰀩cient for the condensate drain pipe
to be routed vertically into the ground to a depth of at
least 90 cm.
Install the condensate pipe nozzle on the condensate
drain, which is included in the scope of delivery for the
device, on the underside of the device using the en-
closed screws:
1. Outdoors:
 Connectthecondensatepipe(wallductaccessory)
to the condensate pipe nozzle.
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“Wall duct installation instruction”
The condensate pipe must not be inserted into the
groundonitsown,itmustrstbeinsertedintoasec-
ond pipe that is suitable for installation in the ground
(suchasawastewaterpipe).
The connection between the pipes must be sealed. It
must be possible to compensate the length. The pipe on
the device must not press against the ground, it must be
possible to slide it.
Su󰀩cientseepageofthedrainingcondensateintothe
ground must be ensured.
2. Towards the inside:
 Insertthe condensate pipe(wall ductaccessory)
throughthewallduct(accessory)(usinglubricant)
and connect it to the condensate nozzle using the
enclosed plastic elbows.
“Wall duct installation instruction”
If the condensate pipe is not routed inwards, the front
and rear openings in the wall duct have to be sealed
with the enclosed plugs.
6.2 Connection to the heating circuit
NOTE
If an existing system is replaced, the old vi-
bration 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 at least
results in the minimum throughput required for the
device type ( “Technical data/scope of deliv-
ery”).
The hydraulic system must be equipped with a
bu󰀨ertank,therequiredvolumeofwhichdepends
on your device type.
“Technical data”
The lines for the heating are fastened to the wall or
ceilingviaaxedpoint.
1. Insert the vent at the highest point of the heating
circuit.
Makesurethatthe workingoverpressure ( “Tech-
nical data/scope of delivery” on page 15) is com-
plied with. Attach the enclosed sealing plate into the
recessinthehousingoor.
1 Sealing plate
2 Heating water feed-throughs
3 Electric cable feed-throughs

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Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
2. Connectthedevicetothexedpipingoftheheat-
ingcircuitviavibrationdecoupling(stainlesssteel
corrugated pipes, accessory). You must install
them to prevent the transfer of structurally borne
soundtothexedpiping.
“Vibration decoupling installation instruction”
1Heatingwateroutletconnection(ow)
2Heatingwaterinletconnection(return)
3 Condensate drain pipe
3. Vibrationdecoupling(accessoryorwallductscope
of delivery):
Route the stainless steel corrugated pipes through
the feed-through in the housing oor and screw
them onto the two pipes in the wall duct.
 Connectthesupplylinerst,thenthereturnline.
If no wall duct is used, route the xed piping of the
heating circuit outdoors below the frost line.
6.3 Pressure safety
Equip the heating circuit with a safety valve and dia-
phragm expansion vessel in accordance with local
standards and guidelines.
Alsoinstallllinganddrainingdevices,shut-o󰀨devic-
es and non-return valves in the heating circuit.
7 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(for400Vconnectiononly).
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 miniature circuit-breaker with at least
3mmcontactspacing(IEC60947-2).
●If required, residual current circuit breaker type A
issu󰀩cient.
● Note the tripping current level ( “Technical
data/scope of delivery” on page 15).
●Comply with the electromagnetic compatibility
regulations(EMCregulations).
●Install the control and sensor cables and device
supplycablesu󰀩cientlyfarapart(>100mm).
●Install unshielded power supply cables and
shieldedcables(buscables)su󰀩cientlyfarapart.
●Do not extend the patch cable or bus cable. Bus ca-
bles up to a length of 30 m can be used if the quality
of the cable matches that of the original cable.
1. Route the pre-assembled 8 m cable for the heat
pump inside the building to the hydraulic unit.
2. Connect the compressor load cable to the hydrau-
lic unit using the 5-pin plug included in the heat
pump scope of delivery, “load connection to L1”.
See “Terminal diagram/circuit diagram for hy-
draulic unit”
3. Route the bus cable in a cable conduit up to the
building feed-through and from there on to the hy-
draulic unit.
4. Connect the bus cable (communication) to the
hydraulic unit using the plug included in the heat
pump scope of delivery.
5. Connect the control voltage to the hydraulic unit
using the plug included in the heat pump scope of
delivery.
See “Terminal diagram/circuit diagram for hy-
draulic unit”
Maximum line length: 30 m.

12
Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
8 Flushing,llingandventing
8.1 Heating water quality
NOTE
●Detailed information is also provided in
the VDI Guideline 2035 “Vermeidung von
Schäden in Warmwasserheizanlagen”
(Preventing damage in hot water heating
systems).
●Required pH value: 8.2 to 10
●For aluminium materials: pH value: 8.2 to 8.5
►Fill the system only with demineralized heating
water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-alkalisationafter lling
the system
●If necessary, simple alkalisation to a pH value of
8.2 by adding chemicals
8.2 Flushing,llingandventing
the heating circuit
The outlet pipe of the safety valve is connected.
►Ensure that the response pressure of the safety
valve is not exceeded.
NOTE
The venting programme 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 programme. 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.
9 Insulation of hydraulic
connections
Insulate hydraulic lines in accordance with the 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.
5. Insulate the condensate drain in a frost-proof
manner.
6. The device must be completely closed on all sides
to ensure rodent protection.
10 Settingtheoverowvalve
NOTE
●The activities in this section are only necessary
for 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 temperature
di󰀨erence(thespread),turnittothelefttore-
duce it.
Thesystemisrunninginheatingmode(ideallyin
cold condition).
If the storage tank is integrated in series, the IBN – as-
sistantallowsyoutoadjusttheoverowvalveaccord-
ing to to the hydraulic system.

13
Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
ConrmtheIBN–assistantormakethesettingvia:
Service>>Settings>>Energye󰀩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 as a %
● Theactualowrateisthecurrentowrate(meas-
uring 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 to
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 switch-
es back to standard regulation.
5. Open valves to heating circuit.
11 Commissioning
The relevant planning and design data of the system
is documented in full.
The relevant energy supply company has been
notiedoftheoperationoftheheatpumpsystem.
The system is air-free.
Installation check using the rough checklist has
been completed successfully.
1. Ensurethatthefollowingpointsarefullledcom-
pletely:
● Clockwiserotatingeldispresentfortheload
supplyatthe compressor(for400 Vconnec-
tion only).
●The system is installed and mounted accord-
ing to this operation manual.
●The electrical installation has been carried out
properly according to this operation manual
and the local regulations.
●The power supply for the heat pump is
equipped with an all-pole circuit-breaker with
atleast3mmcontactspacing(IEC60947-2).
●The tripping current is complied with.
●Theheatingcircuithasbeenushedandvented.
● All shut-o󰀨 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 andAustria: Send the notice of comple-
tion for heat pump systems and rough checklist to
themanufacturer’s factorycustomerservice depart-
ment.
In other countries: Send the 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 com-
missioned by the manufacturer’s authorised after
sales service for a fee.

14
Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
12 Maintenance
NOTE
We recommend that you conclude a mainte-
nance agreement with your specialist heating
company.
12.1 Basic principles
The cooling circuit of the heat pump does not require
any regular maintenance.
12.2 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 device freely, without obstruction.
To this end, check the condensate pan in the de-
vice and the evaporator regularly for dirt/clogging
and clean as necessary.
12.3 Annual maintenance
►Determine the quality of the heating water by anal-
ysis.Intheeventofdeviationsfromthespecica-
tions, take suitable measures without delay.
12.4 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.
13 Malfunctions
►Read out the cause of the malfunction via the di-
agnostic programme of the heating and heat
pump controller.
►Consult the manufacturer’s local partner or the
factory’s customer service. Have the fault mes-
sage and device number ready at hand.
14 Dismantling and disposal
14.1 Dismantling
The device is disconnected from the power sup-
ply and protected against being switched back on
again.
Theinstallerisqualiedtoworkonthecoolingcircuit
andhastherelevantcertication.
The installer is qualied to handle ammable re-
frigerant.
Thedisposalequipmentissuitableforammable
refrigerants.
►The locally applicable regulations for handling re-
frigerants are complied with.
►The locally applicable regulations for handling
ammablerefrigerantsarecompliedwith.
►Keep away from sources of ignition.
►Collect all media safely.
►Separate components according to their materials.
14.2 Disposal and recycling
►Dispose of environmentally hazardous media ac-
cording to the local regulations, e.g. refrigerant,
compressor oil etc.
►Ensure the correct recycling or disposal of device
components and packaging materials in accord-
ance with the local regulations.

15
Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
Technical data/scope of delivery LWDV
Performance data
Heating capacity ı COP
for A10/W35 acc. to EN14511 Partial load operation kW ı COP
for A7/W35 acc. to EN14511 Partial load operation kW ı COP
for A7/W55 acc. to EN14511 Partial load operation kW ı COP
for A2/W35 acc. to EN14511 Partial load operation kW ı COP
for A-7/W35 acc. to EN14511 Full load operation kW ı COP
for A-7/W55 acc. to EN 14511 Full load operation kW ı COP
Heating capacity for A10/W35 min. I max. kW ı kW
for A7/W35 min. I max. kW ı kW
for A7/W55 min. I max. kW ı kW
for A2/W35 min. I max. kW ı kW
for A-7/W35 min. I max. kW ı kW
for A-7/W55 min. I max. kW ı kW
Cooling capacity ı EER
for A35/W18 Partial load operation kW ı EER
for A35/W7 Partial load operation kW ı EER
Cooling capacity for A35/W18 min. I max. kW ı kW
for A35/W7 min. I max. kW ı kW
Operating limits
Heating circuit return min. I Heating circuit flow max. Heating
within heat source min./max.
°C
Heat source, heating min. I max. °C
additional operating points …
Sound
Sound power level, inside min. I Night I max. dB(A)
Sound power level, outside 1) min. I Night I max. dB(A)
Sound power level acc. to EN12102 inside I outside dB(A)
Heat source
Air flow rate at maximum external pressing I Maximum external pressure m³/h I Pa
Heating circuit
Flow rate (pipe dimensioning) I Minimum volume of buffer tank l/h I l
Free pressing ı Pressure loss ı Flow rate bar I bar I l/h
Max. allowable operating pressure bar
Circulation pump control range min. I max. l/h
General unit data
Total weight kg
Weight of heat pump module I Compact module I Fan module kg I kg I kg
Refrigerant type ı Refrigerant capacity … ı kg
Electrics
Voltage code ı all-pole fuse protection for heat pump *)**) … ı A
Voltage code ı Control voltage fuse protection **) … ı A
Voltage code ı Electric heating element fuse protection **) … ı A
WP*): effect. Power consumption A7/W35 (partial load operation) EN14511 I Electric consumption I kW ı A
ı
WP*): effective power consumption A7/W35 acc. to EN14511: min. I max. kW ı kW
WP*): Max. machine current I Max. power consumption within the operating limits A ı kW
Starting current: direct ı with soft starter A ı A
Degree of protection IP
Electric heating element output 3 I 2 I 1 phase kW I kW I kW
Circulation pump power consumption, heating circuit min. — max. W
Other unit information
Safety valve, heating circuit included in scope of supply: • yes — no
Response pressure of safety valve, heating circuit bar
Buffer tank included in scope of supply: • yes — no I l
Heating circuit diaphragm expansion vessel included in scope of supply: • yes — no
Overflow valve I Changeover valve, heating -Domestic hot water integrated: • yes — no
Heating circuit vibration decoupling integrated: • yes — no
Controller integrated: • yes — no
Heat quantity recording integrated: • yes — no
*) compressor only, **) note local regulations,
1) indoor and outdoor installation. For indoor installation, intake 1.5m air duct,
Blow-out 1.5m air duct + air duct bend (original accessories)
LWDV 91-1/3
3,01 ı 6,03
2,77 ı 5,41
4,23 ı 3,35
5,08 ı 4,61
8,11 ı 3,14
6,55 ı 2,13
2,95 ı 8,20
2,74 ı 8,20
2,39 ı 8,20
2,33 ı 8,20
3,06 ı 8,11
2,80 ı 6,55
- ı -
- ı -
- ı -
- ı -
20 I 70
-22 I 35
A-10/W65
- ı - ı -
49 ı 53 ı 59
- ı 54
3500 ı -
1600 ı 60
- ı 0,07 ı 1150
3
- ı -
141,00
- ı - ı -
R290 ı 1,05
1~N/PE/230V/50Hz ı B16
1~N/PE/230V/50Hz ı B16
—
1,38 ı 2,11 ı 0,8
0,53 ı 1,6
16 ı 3,7
< 5 ı —
24
- ı - ı -
- ı -
—
— I —
— I -
—
— I —
—
—
—
813585a

16
Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
Performance curves LWDV
Key:
“” Heating water ow rate
Temp„ Heat source temperature
Temp” Heating water temperature
∆pmax Maximum pressure loss
Qh min/max Minimum/maximum heating load
Pe min/max Power consumption
823296a
Legende:
“” Volumenstrom Heizwasser
Temp„ Temperatur Wärmequelle
Temp” Temperatur Heizwasser
∆pmax maximaler Druckverlust
Qh min/max minimale/maximale Heizleistung
Pe min/max Leistungsaufnahme bei minimaler/maximaler Heizleistung
Bezeichnung:
Seite: 1
Zeichnungsnummer: 823296
Datei: 823296 Leistungs- Druckverlustkurven LWDV 91-1_3
Änd./Ä.M./Ersteller/Datum
Leistungs-Druckverlustkurven
-/PEP006-2017/Bornmann/12.04.2018
LWDV 91-1/3
0
1
2
3
4
5
6
7
8
9
10
11
12
13
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35
Temp„ [°C]
Qh min/max [kW]
35°C
55°C
65°C
0,00
0,05
0,10
0,15
0,20
00,5 11,5 22,5
“ ” [m³/h]
∆pmax [bar]
15
25
35
45
55
65
75
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40
Temp” [C°]
Temp„ [°C]
0
1
2
3
4
5
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35
Temp„ [°C]
Pe min/max [kW]
35°C
55°C
65°C

17
Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
DE819504
All dimensions in mm.
A Front view
B Side view
C-C Cross-section (baseplate)
LWDVDimension drawings
1320
580
155
C
C
1
3
2 5 4
445
930 50
510
175 100
405
1270
90 13
395
1090 = =
270
= =
110
C-C
4x M8 IG
6
Legende: D819504
Alle Maße in mm.
A Vorderansicht
B Seitenansicht von links
C-C Schnitt (Grundplatte)
Technische Änderungen vorbehalten
A B
8 7 6 5
4 3 2 1
www.ait-deutschland.eu
D - 95359 Kasendorf
Industriestraße 3
ait-deutschland GmbH
1
1
Ers. d.
Ers. f.
A
B
C
D
E
F
F
E
D
C
B
A
4 3 2 1
Benennung
Zust. Änderungstext
Datum Von
Blatt
von
Werkstoff
Gewicht
Maßstab
1:20 1:15
Det. Maßstab
Datum Name
Erstellt
Gepr.
Norm.
toleranz
Allgemein-
Oberflächen
ArtikelNr.
Schutzvermerk ISO 16016 beachten
DIN ISO 2768 -cL
Gruosso
24.1.2018
NG
13.3.2018 P194
-
819504
Maßbild LWDV 91-1/3
Item Name Dim.
1Heatingwateroutlet(supply) G 1" external thread
2Heatingwaterinlet(return) G 1" external thread
3Vent -
4Nozzle(inseparatepackage)forcondensatedrainpipe DN40
5Cable for power, control, BUS, length ~8 m from device
6Feed-through for supply and return and cable
(inseparatepackage)

18
Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
LWDV Installation protected zones
0,93m
H1
0,5m0,5m
2,3m
WP
SB
1
1
1
WP
SB
3,3m
2,45m
1m1m
1m 1m
WP SB
Legende: DE819401
Technische Änderungen vorbehalten
WP Wärmepumpe
SB Schutzbereich
H1 bis zum Boden
1 Türen, Fenster, Lichtschächte, usw. ins Haus
Aufstellung Schutzbereich Wärmepumpe
Wichtig:
Die Wärmepumpe darf nur im Freien aufgestellt werden!
Dabei ist das Gerät so zu positionieren, dass im Fall einer Leckage kein Kältemittel in das Gebäude
gelangt oder auf irgendeine andere Weise Personen gefährden kann.
In dem Schutzbereich (siehe Abbildung), der sich zwischen der Geräteoberkante und dem Boden befindet
dürfen sich keine Zündquellen , Fenster, Türen, Lüftungsöffnungen, Lichtschächte und der gleichen
befinden. Der Schutzbereich darf sich nicht auf Nachbargrundstücke oder öffentliche Verkehrsflächen
erstrecken. Die Wanddurchführung durch die Gebäudehülle ist gasdicht auszuführen.
Abbildung: Sicherheitsabstände zur Wärmepumpe
AIT
gilt für:
LWD 50A 100601
LWD 70A 100602
Novelan
gilt für:
LAD 5 103601
LAD 7 103602
8 7 6 5
4 3 2 1
www.alpha-innotec.de
D - 95359 Kasendorf
Industriestraße 3
Alpha-InnoTec GmbH
1
1
Ers. d.
Ers. f.
A
B
C
D
E
F
F
E
D
C
B
A
4 3 2 1
Benennung
Aufstellungshinweise Schutzbereich
819401
-
Zust. Änderungstext
Datum
10.6.2011
DM
Von
Blatt
von
Werkstoff
Gewicht
Maßstab
1:50
Det. Maßstab
Datum Name
Erstellt
Gepr.
Norm.
9.6.2011
Markieton
10.6.2011
Markieton
toleranz
Allgemein-
DIN ISO 2768 -c
Oberflächen
ArtikelNr.
Schutzvermerk ISO 16016 beachten
Figure: Safety clearances to the heat pump
Key: DE819401
WP Heat pump
SB Protection zone
H1 to the oor
1 Doors, windows, light wells etc. into the building
Installation protection zone for heat pump
Important: The heat pump must be installed outdoors!
The device should be positioned so that, in the event of a leak, no refrigerant
can enter the building or endanger persons in any other way.
In the protection zone (see illustration) between the upper edge of the device and the oor,
there must not be any sources of ignition, windows, doors, ventilation openings, light wells
or similar. The protection zone must not reach into neighbouring properties or public trafc
areas. The wall duct through the building envelope should be designed to be airtight.

19
Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
Key: 819393-1c
Subject to technical amendments without prior notice.
All dimensions in mm.
V1 Variant 1
A Front view
C Top view
V Detailed view of cladding
W Detailed view of wall attachment
X Detailed view of condensate line inside building
Y Detailed view of condensate line outside building
FA Complete external facade
UKGLower edge of device
OKBUpper edge of ground
LROEmpty sewer conduit DN 125, Øa 125, shorten on site
LR Direction of air
FS Clearance for servicing
1 Heating water supply (accessory)
2 Heating water return (accessory)
3 Cable bushing
4 Wall duct (accessory)
5 Condensate drain / waste trap (for installation notes on condensate drain, see operation manual)
6 Bracket for wall attachment (accessory)
8 Cladding of wall duct (accessory)
1320
930
>
300
93
FS >
1800
A
1
2
X
C
W
Y
V
UKG
OKB
4
5
3
510
445 200
430
400
FS > 800 FS > 800
FS >
1650
282
LR
LRO
FA
6
4
5
3
8
Legende: 819393-1c
Technische Änderungen vorbehalten.
Alle Maße in mm.
V1 Variante 1
A Vorderansicht
C Draufsicht
V Detailansicht Verkleidung
W Detailansicht Wandbefestigung
X Detailansicht Kondensatleitung innerhalb Gebäude
Y Detailansicht Kondensatleitung außerhalb Gebäude
FA Fertigaußenfassade
UKG Unterkante Gerät
OKB Oberkante Boden
LRO Leerrohr KG DN 125, Øa 125, bauseits kürzen
LR Luftrichtung
FS Freiraum für Servicezwecke
1 Heizwasservorlauf (Zubehör)
2 Heizwasserrücklauf (Zubehör)
3 Kabeldurchführung
4 Wanddurchführung (Zubehör)
5 Kondensatablauf / Syphon (Aufstellungshinweise Kondensatablauf siehe Bedienungsanleitung)
6 Konsole für Wandbefestigung (Zubehör)
8 Verkleidung Wanddurchführung (Zubehör)
V1
8 7 6 5
4 3 2 1
www.alpha-innotec.de
D - 95359 Kasendorf
Industriestraße 3
Alpha-InnoTec GmbH
1
10
Ers. d.
Ers. f.
A
B
C
D
E
F
F
E
D
C
B
A
4 3 2 1
Benennung
Aufstellungsplan
LWD 50/70A
819393
c
b
a
-
Zust. Änderungstext
PEP 006/2011
PEP 003/2012
ÄM 063/2012
PEP 006/2011
Datum
10.6.2011
27.6.2011
20.6.2012
6.2.2013
DM
Von
RE
DM
DM
Blatt
von
Werkstoff
Gewicht
Maßstab
1:40 1:30
Det. Maßstab
Datum Name
Erstellt
Gepr.
Norm.
30.5.2011
Markieton
11.2.2013
Markieton
toleranz
Allgemein-
DIN ISO 2768 -c
Oberflächen
ArtikelNr.
Schutzvermerk ISO 16016 beachten
Installation plan Wall bracket
WITH WALL DUCT

20
Subject to technical amendments without prior notice | 83055800cUK – Translation of the operating manual | ait-deutschland GmbH
1320
930 300
±5
FS >1800
C
A
1
2
12 5
UKG
OKB
445 200
430 FS > 800 FS > 800
FS >
1650
510
LR
FA
6
W
Y
12
5
V
8
Legende: 819393-2c
Technische Änderungen vorbehalten.
Alle Maße in mm.
V2 Variante 2
A Vorderansicht
C Draufsicht
V Detailansicht Verkleidung
W Detailansicht Wandbefestigung
Y Detailansicht Kondensatleitung außerhalb Gebäude
FA Fertigaußenfassade
UKG Unterkante Gerät
OKB Oberkante Boden
LR Luftrichtung
FS Freiraum für Servicezwecke
1 Heizwasservorlauf (Zubehör)
2 Heizwasserrücklauf (Zubehör)
5 Kondensatablauf / Syphon (Aufstellungshinweise Kondensatablauf siehe Bedienungsanleitung)
6 Konsole für Wandbefestigung (Zubehör)
8 Verkleidung Wandkonsole (Zubehör)
12 Hydraulische Verbindungsleitung
V2
8 7 6 5
4 3 2 1
www.alpha-innotec.de
D - 95359 Kasendorf
Industriestraße 3
Alpha-InnoTec GmbH
Schutzvermerk nach ISO 16016 beachten
2
10
Ers. d.
Ers. f.
A
B
C
D
E
F
F
E
D
C
B
A
4 3 2 1
Benennung
Aufstellungsplan
LWD 50/70A
819393
c
b
a
-
Zust. Änderungstext
PEP 006/2011
PEP 003/2012
ÄM 063/2012
PEP 006/2011
Datum
10.6.2011
27.6.2011
20.6.2012
6.2.2013
DM
Von
RE
DM
DM
Blatt
von
Werkstoff
Gewicht
Maßstab
1:40 1:30
Det. Maßstab
Datum Name
Erstellt
Gepr.
Norm.
30.5.2011
Markieton
11.2.2013
Markieton
toleranz
Allgemein-
DIN ISO 2768 -c
Oberflächen
ArtikelNr.
Installation plan for wall bracket
WITH HYDRAULIC CONNECTION LINE
Key: 819393-2c
Subject to technical amendments without prior notice.
All dimensions in mm.
V2 Variant 2
A Front view
C Top view
V Detailed view of cladding
W Detailed view of wall attachment
Y Detailed view of condensate line outside building
FA Complete external facade
UKGLower edge of device
OKBUpper edge of ground
LR Direction of air
FS Clearance for servicing
1 Heating water supply (accessory)
2 Heating water return (accessory)
5 Condensate drain/waste trap (for installation notes on condensate drain, see operation manual)
6 Bracket for wall attachment (accessory)
8 Cladding of wall bracket (accessory)
12 Hydraulic connection line