alphainnoTec LWD 70A User manual

UK
Operating Manual
LWD 50A • LWD 70A • LWD 90A
LWD 50A/RX • LWD 70A/RX
Air/Water Heat Pumps
Dual / Outdoor Installation
83053500kUK – Translation into English of the original German operating manual

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Subject to change without notice | 83053500kUK – Translation into English of the original German operating manual | ait-deutschland GmbH
Please read rst
This operating manual provides important information
on the handling of the unit. It is an integral part of the
product and must be stored so that it is accessible in the
immediate vicinity of the unit. It must remain available
throughout the entire service life of the unit. It must be
handed over to subsequent owners or users of the unit.
Read the operating manual before working on or
operating the unit. This applies in particular to the
chapter on safety. Always follow all instructions
completely and without restrictions.
It is possible that this operating manual may contain
instructions that seem incomprehensible or unclear. In
the event of any questions or if any details are unclear,
contact the factory customer service department or the
manufacturer’s local partner.
Since this operating manual was written for several
different models of the unit, always comply with the
parameters for the respective model.
This operating manual is intended only for persons
assigned to work on or operate the unit. Treat all
constituent parts condentially. The information
contained herein is protected by copyright. No part of
this manual may be reproduced, transmitted, copied,
stored in electronic data systems or translated into
another language, either wholly or in part, without the
express written permission of the manufacturer.
Symbols
The following symbols are used in the operating manual.
They have the following meaning:
Information for operators.
Information or instructions for qualied
technicians.
DANGER!
Indicates a direct impending danger
resulting in severe injuries or death.
WARNING!
Indicates a potentially dangerous situation
that could result in serious injuries or
death.
CAUTION!
Indicates a potentially dangerous situation
that could result in medium or slight
injuries.
ATTENTION
Indicates a potentially dangerous situation, which
could result in property damage.
NOTICE.
Emphasised information.
Flammable materials
Dangerous electrical voltage
€ENERGY SAVING TIP
Indicates suggestions that help to save energy,
raw materials and costs.
Reference to other sections of the operating
manual.
Reference to other documents of the
manufacturer.

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Subject to change without notice | 83053500kUK – Translation into English of the original German operating manual | ait-deutschland GmbH
Contents
INFORMATION FOR USERS AND QUALIFIED
PERSONNEL
PLEASE READ FIRST..................................................................2
SYMBOLS .....................................................................................2
INTENDED USE..........................................................................4
DISCLAIMER................................................................................4
EC CONFORMITY .....................................................................4
SAFETY .........................................................................................4
CUSTOMER SERVICE ................................................................5
WARRANTY / GUARANTEE ....................................................5
DISPOSAL ....................................................................................5
OPERATING PRINCIPLE OF HEAT PUMPS ..........................6
AREA OF UTILISATION............................................................6
HEAT METERING.......................................................................6
OP ER ATI ON ................................................................................6
CARE OF THE UNIT..................................................................6
MAINTENANCE OF THE UNIT ..............................................6
Cleaning and flushing of unit components........................7
MALFUNCTIONS.......................................................................7
INSTRUCTIONS FOR QUALIFIED TECHNICIANS
SCOPE OF DELIVERY ................................................................7
Main components..................................................................8
INSTALLATION AND ASSEMBLY...........................................8
Installation location..............................................................8
Transport to installation location......................................8
Sound ......................................................................................9
Installation............................................................................11
Installation with wall bracket............................................ 11
Installation on floor bracket .............................................11
Condensate drain ..............................................................11
Connection to the heating circuit....................................12
ELECTRICAL CONNECTIONS .............................................13
PRESSURE RELIEF.....................................................................14
OVERFLOW VALVE..................................................................14
BUFFER TANK...........................................................................14
CIRCULATING PUMPS ...........................................................14
DOMESTIC WATER HEATING..............................................14
DOMESTIC HOT WATER TANK ..........................................14
RINSING, FILLING AND BLEEDING THE SYSTEM ..........15
Water quality of the fill and additional water in hot
water heating systems .................................................15
INSULATING THE HYDRAULIC CONNECTIONS ..........16
COMMISSIONING ...................................................................17
DISMANTLING .........................................................................17
Withdrawal from service...................................................18
Markings ...............................................................................18
Recovery/recycling..............................................................18
TECHNICAL DATA / SCOPE OF DELIVERY
LWD 50A – LWD 90A .......................................................20
LWD 50A /RX– LWD 70A/RX .........................................22
PERFORMANCE CURVES
LWD 50A Heating mode ...................................................24
LWD 70A Heating mode....................................................25
LWD 90A Heating mode ...................................................26
LWD 50A/RX Heating mode ............................................27
LWD 50A/RX Cooling mode ............................................28
LWD 70A/RX Heating mode ............................................29
LWD 70A/RX Cooling mode ............................................30
DIMENSIONAL DRAWINGS .................................................31
INSTALLATION PROTECTION AREAS...............................32
WALL BRACKET INSTALLATION PLAN............................33
Wall feedthrough
FLOOR BRACKET INSTALLATION PLAN..........................34
Hydraulic connection pipe
FLOOR BRACKET INSTALLATION PLAN..........................35
Wall feedthrough
FLOOR BRACKET INSTALLATION PLAN..........................36
Hydraulic connection pipe
DRILLING PATTERN FOR WALL BRACKET......................37
Wall feedthrough
DRILLING PATTERN FOR WALL BRACKET......................38
Hydraulic connection pipe
VIEW OF FOUNDATION V3 .................................................39
Wall feedthrough
VIEW OF FOUNDATION V4 ................................................ 40
Hydraulic connection pipe
MINIMUM CLEARANCES.......................................................41
OUTSIDE CONNECTION OF CONDENSATE PIPE.........42
INSIDE CONNECTION OF CONDENSATE PIPE .............43
CIRCUIT DIAGRAMS
LWD 50A(RX) – LWD 70A(RX), LWD 90A................. 44

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Subject to change without notice | 83053500kUK – Translation into English of the original German operating manual | ait-deutschland GmbH
Intended use
The unit may be used only for the intended purpose. This
means - only in combination with the manufacturer’s
hydraulic module or hydraulic tower “Dual” (not the R
variant):
•for heating
•for cooling (RX variants only)
•for domestic water heating
The unit may be operated only within its technical
parameters.
Overview “Technical data / scope of delivery”.
NOTE.
Notify the responsible power supply company of
the use of a heat pump or heat pump system.
ATTENTION
The unit is not suitable for use in IT network
systems.
CAUTION!
The unit may only be stored in rooms
that do not contain permanent ignition
sources. Do not drill or torch!
Disclaimer
The manufacturer is not liable for losses resulting from
any use of the unit which is not its intended use.
The manufacturer’s liability also expires:
•if work is carried out on the unit and its
components contrary to the instructions in this
operating manual.
• if work is improperly carried out on the unit and
its components.
•if work is carried out on the unit which is not
described in this operating manual, and this
work has not been explicitly approved by the
manufacturer in writing.
•if the unit or components in the unit have been
altered, modied or removed without the explicit
written consent of the manufacturer.
EC conformity
The unit bears the CE mark of conformity.
EC declaration of conformity
(see manual HMD, HTD).
Safety
The unit is safe to operate for its intended use. The
construction and design of the unit conform to current
state of the art standards, all relevant DIN/VDE
regulations and all relevant safety regulations.
Every person who performs work on the unit must
have read and understood the operating manual prior
to starting any work. This also applies if the respective
person has already worked with such a unit or a similar
unit or has been trained by the manufacturer.
Every person who performs work on the unit must
comply with the applicable accident prevention and
safety regulations. This applies in particular to the
wearing of personal protective equipment.
DANGER!
Risk of fatal injury due to electric shock!
Electrical connections may be installed
only by qualied electricians.
Before opening the unit, disconnect the
system from the power supply and secure
it from being switched back on!
WARNING!
Only qualied personnel (trained heating,
cooling and refrigerant tters and
electricians) may perform work on the
unit and its components.
WARNING!
Observe safety labels on and in the unit.

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Subject to change without notice | 83053500kUK – Translation into English of the original German operating manual | ait-deutschland GmbH
WARNING!
Unit contains ammable refrigerants!
If refrigerant leaks an explosion hazard is
caused. If this happens:
– Shut down unit.
– Notify the manufacturer’s authorised
service centre.
– Keep ignition sources away.
ATTENTION
For safety reasons:
Never disconnect the unit from the power sup-
ply, unless the unit is being opened.
ATTENTION
Install the heat pump only outdoors and operate
only with outside air as the heat source. Do not
restrict or block the air-conducting sides.
Dimensional drawing and installation plan for
respective model.
WARNING!
Never switch on unit if façade parts on the
unit are removed.
ATTENTION
It is not permitted to integrate the heat pump in
ventilation systems. The use of the cooled air for
cooling purposes is not permitted.
ATTENTION
The ambient air at the place in which the heat
pump is installed, as well as the air drawn in as
a heat source, must not contain any corrosive
constituents!
Constituents (such as ammonia, sulphur, chlo-
rine, salt, sewage gases, ue gases…) can cause
damage to the heat pump, which can lead to
complete failure / irreparable damage to the
heat pump!
ATTENTION
By cooling with low ow temperatures, conden-
sate can be expected to form on the heat distri-
bution system as the temperature falls below the
dew point. If the heat distribution system is not
designed for these operating conditions, it must
be protected by appropriate safety devices, e.g.
dew point monitor (purchasable accessory).
NOTE
If the heating surfaces are used for heating and
cooling, the control valves must be suitable for
heating and cooling.
In addition, a dew-point monitor should be used
for cooling.
NOTE
Water accumulations resulting from extreme
weather conditions, or from condensation in, on
and under the unit which do not ow away via
the condensate discharge are normal and do not
constitute a heat-pump malfunction or defect
Customer service
For technical assistance, please contact your qualied
technician or the manufacturer’s local service partner.
For a current list and additional partners of the manufac-
turer, please visit
DE: www.alpha-innotec.de
EU: www.alpha-innotec.com
Warranty / Guarantee
For warranty and guarantee conditions, please refer to
the purchase documents.
NOTE.
Please contact your dealer concerning warran-
ties and guarantees.
Disposal
When decommissioning the unit, always comply with
applicable laws, directives and standards for the recovery,
recycling and disposal of materials and components of
cooling units.
“Dismantling”.

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Subject to change without notice | 83053500kUK – Translation into English of the original German operating manual | ait-deutschland GmbH
Operating principle of heat
pumps
Heat pumps operate on the same principle as a
refrigerator: same technology, only with reversed
benets. The refrigerator extracts heat from foods,
which is released into the room through ns on the back.
The heat pump extracts heat from our environment: air,
earth or water. The extracted heat is conditioned in the
unit and supplied to the heating water. Even when it is
extremely cold outside, the heat pump draws enough
heat to heat a house.
Example: drawing of a brine/water heat pump with
underoor heating:
4/4= usable energy
approx. 3/4= environmental energy
approx. 1⁄4= external
electrical energy
Area of utilisation
Taking into consideration the ambient conditions, limits
of application and the applicable regulations, every heat
pump can be utilised in new or existing heating systems.
Overview “Technical data / scope of delivery”.
Heat metering
Operating manual for the heating and heat pump
regulator.
Hydraulic module (Dual) operating manual.
Operation
Hydraulic module (Dual) operating manual.
Care of the unit
The outer surfaces of the unit can be cleaned with a
damp cloth and household cleaning products.
Do not use cleaning or care products that contain
abrasives, acids and/or chlorine. Such products would
destroy the surfaces and could also damage the technical
components of the unit.
Maintenance of the unit
The cooling circuit of the heat pump requires no regu-
lar maintenance.
According to EU regulation (EC) 517/2014, leak
inspections and maintenance of a log book are required
by law for certain heat pumps!
Log book for heat pumps, Section “Information
on use of the log book”.
The components of the heating circuit and the heat
source (valves, expansion vessels, circulating pumps,
lters, dirt traps) should be inspected and cleaned as
necessary - however, at least once a year - by qualied
personnel (heating or cooling system tters).
The intake and blow-out openings must be inspected for
dirt at regular intervals (depending on the installation
location) and cleaned, if necessary.
ATTENTION
Regularly check to ensure that the condensate
can drain out of the unit unobstructed. To do
this, regularly check the condensate tray in the
unit and the condensate drain for dirt / blo-
ckages and if necessary clean.

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Subject to change without notice | 83053500kUK – Translation into English of the original German operating manual | ait-deutschland GmbH
Icing of the protective grating
If temperatures fall below freezing and humidity is high
at the same time, ice can form on the protective grating.
In order to ensure problem-free operation, the ice must
be removed at regular intervals.
It is best to arrange a maintenance agreement with a
heating installation company. The company will conduct
the required maintenance at regular intervals.
WARNING!
Do not use any objects, other than those
allowed by the manufacturer, to accelerate
the thawing process.
NOTE.
Any person who works on the refrigerant circuit
must have a qualication certicate issued by a
body accredited by the industry.
CLEANING AND FLUSHING OF UNIT COMPONENTS
CAUTION!
Unit components may be cleaned
and ushed only by customer service
personnel authorised by the manufacturer.
Use only liquids recommended by the
manufacturer.
Rinsing of the liqueer with chemical
cleaning agents must be followed by
neutralisation of residue and intensive
ushing with water. Always observe the
technical data of the manufacturer of the
heat exchanger.
Malfunctions
In the event of a fault, you can read out the cause of the
fault from the diagnostic program of the heating and heat
pump regulator.
Operating manual of the heating and heat pump
regulator.
WARNING!
Only customer service personnel
authorised by the manufacturer may
carry out service and repair work on the
components of the unit.
Scope of delivery
LWD 50A(RX), LWD 70A(RX) AND LWD 90A:
1 bus cable, 1 load cable,
1 control cable.
Cable connected on heat pump side.
1 additional box:
- 1 condensate pipe socket + 3 xing screws
-- 1 long Torx bit for façade screws
NOTE.
The outdoor sensor is included with the hydrau-
lic module.
Check the delivery for outwardly visible signs of
damage…
Check to make sure that delivery is complete…
Any defects or incorrect deliveries must be
reported immediately.
Overview “Technical data / scope of delivery”.
FUNCTIONALLY RELEVANT ACCESSORIES
CAUTION.
Use only original accessories from the manufac-
turer of the unit.
Hydraulic module (internal part) with heat pump
regulator, electric heating element, expansion vessel,
heating circulating pump, safety assembly, insulated
housing, stopcocks and drain.
The heat pump is not a functional unit until the hydraulic
module is installed.

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Subject to change without notice | 83053500kUK – Translation into English of the original German operating manual | ait-deutschland GmbH
ADDITIONAL ACCESSORIES
- Wall penetration with vibration insulation
- Wall bracket
- Floor bracket
- Vibration insulation
- buffer storage
- overow valve
- covering for Wall bracket
- covering for Floor bracket
- hydraulic connecting line
If the cable length of 5m is not long enough for outdoor
open eld installation, an extension kit (25 m) can be
ordered.
MAIN COMPONENTS
1 condenser
2 compressor
3 evaporator
4 switch
5 fan
Installation and assembly
The units can either be installed mounted on the oor
or mounted on the wall
The following applies to all work to be done:
NOTE.
Always comply with applicable accident pre-
vention regulations, statutory regulations, ordi-
nances and directives.
NOTE.
Observe the sound levels of the respective model.
Overview “Technical data / scope of delivery”,
“Sound” section and “Sound level” overview.
INSTALLATION LOCATION
ATTENTION
Install the unit only outside buildings.
Dimensional drawing, installation plans and
protection areas for the respective model.
TRANSPORT TO INSTALLATION LOCATION
To prevent damage during transport, always transport
the unit to nal installation location in its original
packaging, using a lifting truck, forklift or crane.
NOTE.
The unit is delivered on a pallet with xing rails.
The xing rails can be used for transport.
CAUTION.
Always wear protective gloves if using the
xing rail for transport!
1 xing rail
CAUTION!
Several people are required to transport
the unit. Do not underestimate the weight
of the unit.
Overview “Technical data / scope of delivery”,
“General unit data” section.
ATTENTION
Never use components and hydraulic connec-
tions on the unit for transport purposes.
ATTENTION
Do not tilt the unit more than a maximum of 45°
(in any direction).

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Subject to change without notice | 83053500kUK – Translation into English of the original German operating manual | ait-deutschland GmbH
SOUND
The noise emission from 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 constellations, adjoining other buildings or
even reecting surfaces may lead to a level increase. An exact specication of each sound pressure level is pos-
sible only through a measurement spot when the heat pump is already installed.
The following sound pressure levels result, depending on the distance and installation variant with directivity factor Q-
LWD 50A
Distance in m 12345678910 11 12 13 14 15 16 17 18 19 20
sound pressure level Q2 49 43 39 37 35 33 32 31 30 29 28 27 27 26 25 25 24 24 23 23
sound pressure level Q4 52 46 42 40 38 36 35 34 33 32 31 30 30 29 28 28 27 27 26 26
sound pressure level Q8 55 49 45 43 41 39 38 37 36 35 34 33 33 32 31 31 30 30 29 29
LWD 50A/RX
Distance in m 12345678910 11 12 13 14 15 16 17 18 19 20
sound pressure level Q2 49 43 39 37 35 33 32 31 30 29 28 27 27 26 25 25 24 24 23 23
sound pressure level Q4 52 46 42 40 38 36 35 34 33 32 31 30 30 29 28 28 27 27 26 26
sound pressure level Q8 55 49 45 43 41 39 38 37 36 35 34 33 33 32 31 31 30 30 29 29
LWD 70A
Distance in m 12345678910 11 12 13 14 15 16 17 18 19 20
sound pressure level Q2 49 43 39 37 35 33 32 31 30 29 28 27 27 26 25 25 24 24 23 23
sound pressure level Q4 52 46 42 40 38 36 35 34 33 32 31 30 30 29 28 28 27 27 26 26
sound pressure level Q8 55 49 45 43 41 39 38 37 36 35 34 33 33 32 31 31 30 30 29 29
LWD 70A/RX
Distance in m 12345678910 11 12 13 14 15 16 17 18 19 20
sound pressure level Q2 49 43 39 37 35 33 32 31 30 29 28 27 27 26 25 25 24 24 23 23
sound pressure level Q4 52 46 42 40 38 36 35 34 33 32 31 30 30 29 28 28 27 27 26 26
sound pressure level Q8 55 49 45 43 41 39 38 37 36 35 34 33 33 32 31 31 30 30 29 29
LWD 90A
Distance in m 12345678910 11 12 13 14 15 16 17 18 19 20
sound pressure level Q2 51 45 41 39 37 35 34 33 32 31 30 29 29 28 27 27 26 26 25 25
sound pressure level Q4 54 48 44 42 40 38 37 36 35 34 33 32 32 31 30 30 29 29 28 28
sound pressure level Q8 57 51 47 45 43 41 40 39 38 37 36 35 35 34 33 33 32 32 31 31

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Subject to change without notice | 83053500kUK – Translation into English of the original German operating manual | ait-deutschland GmbH
Q = 2
Q = 4
Q = 8
The directivity factor Q for the different installation va-
riants:
Q2: Outdoor installation without sound reection
Q4: Air outlet/air intake at the wall
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 type,
the respective level increase must be added to the cor-
responding 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 different, not equally loud units, the level in-
crease is read off 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 additio-
nal 1.2 dB.