alphainnoTec LW 140 User manual

We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
Translation of the original instruction manual
HEAT PUMPS
Operating Manual
Inside installation
A IR / WATER
UK
LW 140(L) –LW 310(L)
LW 180H

2We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec 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 operators of the
unit.
Read the operating manual before working on or oper-
ating 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 in-
structions that seem incomprehensible or unclear. In
case of questions or uncertainty, contact the factory
customer service department or the manufacturer’s lo-
cal service partner.
Since this operating manual was written for several dif-
ferent models of the unit, always comply with the pa-
rameters for the respective model.
This operating manual is intended only for persons as-
signed to work on or operate the unit. Treat all con-
stituent parts condentially. The information contained
herein is protected by copyright. No part of this infor-
mation 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 techni-
cians.
DANGER!
Indicates a direct impending danger re-
sulting in severe injuries or death.
WARNING!
Indicates a possibly dangerous situa-
tion that could result in severe injuries or
death.
WARNING!
Indicates a possibly dangerous situation
that could result in medium or light inju-
ries.
ATTENTION
Indicates a possibly dangerous situation, which
could result in property damage.
NOTICE.
Emphasized information.
€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 manufac-
turer.

3
Contents
INFORMATION FOR OPERATORS AND
QUALIFIED SPECIALISTS
PLEASE READ FIRST..................................................................2
SYMBOLS .....................................................................................2
INTENDED USE..........................................................................4
DISCLAIMER................................................................................4
EC CONFORMITY .....................................................................4
SAFETY AND SECURITY..........................................................4
CUSTOMER SERVICES ..............................................................5
WARRANTY
/ GUARANTEE ....................................................5
WASTE DISPOSAL .....................................................................5
INFORMATION FOR OPERATORS
OPERATING PRINCIPLEOF HEAT PUMPS.............................6
AREA OF UTILISATION............................................................6
HEAT QUANTITY RECORDING............................................6
OPERATION ................................................................................6
CARE OF THE UNIT..................................................................6
MAINTENANCE OF THE UNIT...............................................7
Cleaning and rinsing of unit components..........................7
MALFUNCTIONS.......................................................................7
INSTRUCTIONS FOR QUALIFIED TECHNICIANS
SCOPE OF DELIVERY ................................................................8
INSTALLATION AND ASSEMBLY...........................................9
Installation location..............................................................9
Transport to installation location......................................9
Installation............................................................................13
Mounting the air ducts.......................................................13
Installation / connection to heating circuit ...................16
Condensate discharge........................................................17
PRESSURE RELIEF.....................................................................18
OVERFLOW VALVE..................................................................18
BUFFER TANK...........................................................................18
CIRCULATING PUMPS ...........................................................18
WATER HEATING ....................................................................18
HOT-WATER TANK.................................................................18
ELECTRICAL CONNECTIONS .............................................19
RINSING, FILLING AND BLEEDING THE SYSTEM ..........20
Water quality of the fill and additional water in hot
water heating systems .................................................20
INSULATING THE HYDRAULIC CONNECTIONS ..........22
INSTALLATION OF THE CONTROL ELEMENT ...............22
INSTALLATION AND REMOVAL OF THE SCREEN.........23
COMMISSIONING ...................................................................24
Safety temperature limiter................................................25
DISMANTLING .........................................................................25
TECHNICAL DATA / SCOPE OF DELIVERY
LW 140(L) – LW 310(L) .....................................................26
LW 180H ..............................................................................28
PERFORMANCE CURVES
Heating capacity/COP / power consumption /
Heat pump pressure loss
LW 140(L) ............................................................................30
LW 180(L) ............................................................................31
LW 251(L) .............................................................................32
LW 310(L).............................................................................33
LW 180H ..............................................................................34
DIMENSIONAL DRAWINGS AND INSTALLATION PLANS
Dimensional drawings LW 140 – LW 180 • LW 180H..35
Dimensional drawings
LW 140L – LW 180L • LW 180HL .............................36
Installation plans LW 140(L) – LW 180(L) • LW320H(L)
Installation plan version 1 .................................................37
Installation plan version 2 .................................................38
Installation plan version 3 .................................................39
Installation plan version 4 ................................................ 40
Dimensional drawings LW 251 – LW 310 .......................41
Dimensional drawings LW 251L – LW 310L ...................42
Installation plans LW 251(L) – LW 310(L)
Installation plan version 1 .................................................43
Installation plan version 2 ................................................ 44
Installation plan version 3 .................................................45
Installation plan version 4 .................................................46
TERMINAL DIAGRAMS
LW 140(L) – LW 251(L)......................................................47
LW 310(L)............................................................................ 48
LW 180H ..............................................................................49
CIRCUIT DIAGRAMS
LW 140(L) ............................................................................50
LW 180(L) ............................................................................53
LW 251(L) .............................................................................56
LW 310(L).............................................................................59
LW 180H ..............................................................................62
APPENDIX
EC DECLARATION OF CONFORMITY..............................66
CUSTOMER SERVICE
Addresses in the event of a service call..........................70
We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH

4We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
Intended use
The unit may be used only for the intended purpose.
That means:
•for heating.
•for heating hot water.
The unit may be operated only within its technical pa-
rameters.
Overview “Technical data / scope of delivery”.
NOTICE.
Notify the responsible power supply company of
the use of a heat pump or heat pump system.
CAUTION!
The unit is not suitable for use in IT network
systems.
Disclaimer
The manufacturer will not be liable for damage resulting
from unauthorized use of the unit.
The manufacturer’s liability will also be voided in the fol-
lowing cases:
•if work is performed on the unit and its compo-
nents in a manner that does not comply with the
terms of this operating manual;
•if work is performed on the unit and its compo-
nents in an improper manner;
•if work is performed on the unit that is not de-
scribed in this operating manual, and this work
was not expressly approved in writing by the man-
ufacturer;
•if the unit or components in the unit are modied,
redesigned or removed without the express writ-
ten permission of the manufacturer.
EC conformity
The unit bears the CE mark of conformity.
EC declaration of conformity
Safety and Security
The unit is operationally safe when used for the intend-
ed purpose. The construction and design of the unit con-
form to the state of the art, all relevant DIN/VDE regu-
lations 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 per-
son 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 com-
ply with the applicable accident prevention and safety
regulations. This applies in particular to the wearing of
personal safety gear.
DANGER!
Unit operates under high electric voltage!
DANGER!
Danger of fatal injury due to electric cur-
rent!
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!
ATTENTION
If using the unit in 3~230V systems, please note
that the residual-current circuit breaker (RCCB)
used must be AC-DC sensitive.
DANGER!
Only qualied technicians (trained heat-
ing, cooling, refrigerant and electrical
technicians) may perform work on the
unit and its components.
WARNING!
Observe safety labels on and in the unit.
WARNING!
Unit contains refrigerants!
Leaking refrigerant could result in person-
al injury or material damage. Therefore:
– Shut down unit.
– Notify the manufacturer’s authorized
service center.

5
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83054400aUK © Alpha-InnoTec GmbH
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 indoors and operate
only with outside air as the heat source. The air
ducts must discharge into the open air. Do not
restrict or block the air ducts.
Dimensional drawing and installation plan for re-
spective model.
WARNING!
Switch on unit only if air ducts are mount-
ed on the unit.
Take measures on the fan side to pre-
vent injuries from the rotating fan (above-
ground air duct discharge: below-ground
air-channel discharge: wire mesh grille –
accessories not included in scope of deliv-
ery).
ATTENTION
The integration of the heat pump in ventila-
tion systems is not permissible. The use of the
cooled air for cooling purposes is not permitted.
ATTENTION
The ambient air in the location where the heat-
ing pump is installed and also the intake air which
is used as a source of heat must not contain any
kind of corrosive components!
Components such as ammonia, sulphur, chlo-
rine, salt, sewer gas, ue gases etc. may cause
damage leading to complete failure or even a to-
tal write-off of the heating pump!
WARNING!
In the air outlet area the air temperature
is ca. 5 K below the ambient temperature.
Under certain climatic conditions, there-
fore, an ice layer can form in the air out-
let area. Install the heat pump so that the
air blower does not blow in the direction
of footpaths.
Customer Services
For technical information please contact a qualied tech-
nician or the manufacturer's local partner.
Overview “Customer service”.
Warranty / Guarantee
For warranty and guarantee conditions, please refer to
the purchase documents.
NOTICE.
Please contact your dealer concerning warran-
ties and guarantees.
Waste disposal
When decommissioning the unit, always comply with ap-
plicable laws, directives and standards for the recovery,
recycling and disposal of materials and components of
cooling units.
"Dismantling".

6We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
Operating principleof heat
pumps
Heat pumps operate on the principle of a refrigerator:
the same technology, only with the opposite effect. 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 ground water. The extracted heat is condi-
tioned 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 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 utilized in new or existing heating systems.
Overview "Technical data / scope of delivery".
Heat quantity recording
In addition to the proof of the unit's efciency, EEWaer-
meGalso meets the demand for a heat quantity recording
(hereafter refered to as HQR). The HQR is mandato-
ry with air/water heat pumps. With brine/ water and wa-
ter/water heat pumps, a HQR may only be set up when
a forward ow temperature of ≥ 35 °C has been reached.
The HQR must record the total warm energy release
(heating and hot water) in the building. In heat pumps
with heat quantity recording, the analysis is conducted by
the regulator. The regulator displays the thermal energy
that is exchanged from the heating system in kWh.
Operation
Your decision to purchase a heat pump or a heat pump
system is a long-term contribution to protecting the en-
vironment through low emissions and reduced primary
energy use.
You can operate and control the heat pump system with
the control element of the heating and heat pump regu-
lator.
NOTICE.
Make sure that the control settings are correct.
Operating manual of the heating and heat pump
regulator.
To ensure that your heat pump or heat pump system op-
erates efciently and ecologically, the following are espe-
cially important:
€ENERGY SAVING TIP
Avoid unnecessarily high ow temperatures.
A lower ow temperature on the hot water side
increases the efciency of the system.
€ENERGY SAVING TIP
When letting in fresh air. do not leave windows
open for an extended period in order to save
energy and reduce your heating costs.
Care of the unit

7
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83054400aUK © Alpha-InnoTec GmbH
The outer surfacesof theunit can be cleaned with a damp
cloth and household cleaning products.
Do not use cleaning or care products that contain abra-
sives, acids and/or chlorine. Such products would de-
stroy 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 regular,
technically-qualied maintenance.
According to EU regulation (EC) 842/2006 of May 17,
2006, leak inspections and maintenance of a log book
are required for certain heat pumps!
The criteria for conducting leak inspections and main-
taining a log book are based on the hermetic impermea-
bility of the cooling circuit and the refrigerant capacity of
the heat pump! No log book is required for heat pumps
with a refrigerant capacity of < 3kg. With all other heat
pumps, the log book is included with all other delivered
materials.
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, l-
ters, dirt traps) should be inspected as well as cleaned as
needed - at the very least annually - by a qualied heating
or cooling system technician.
It is a good idea to have a maintenance contract with
a specialist company. The company will conduct the re-
quired maintenance at regular intervals.
ATTENTION
Check regularly to ensure that the condensate
can drain out of the unit unobstructed. To this
end, regularly check the condensate pan in the
unit and the condensate drain to ensure that
they are clean / free from obstructions and clean
as needed.
Cleaning and rinsing of unit Components
WARNING!
Unit components may be cleaned and
rinsed only by customer service personnel
authorized by the manufacturer. Use only
liquids recommended by the manufactur-
er.
Rinsing of the liqueer with chemical
cleaning agents must be followed by neu-
tralization of residue and intensive rinsing
with water. Always observe the technical
data of the manufacturer of the heat ex-
changer.
Malfunctions
In the event of a malfunction, you can detect the cause of
the malfunction via the diagnostic program of the heating
and heat pump regulator.
Operating manual of the heating and heat pump
regulator.
DANGER!
Service and repair work on the compo-
nents of the unit may be performed only by
customer service personnel authorized by
the manufacturer.
Overview “Customer service”.
Note that no malfunction is displayed if the safety tem-
perature limiter on the electric heating element has
been triggered (depending on model).
“Commissioning”, “Safety temperature limiter”
section.

8We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
Scope of delivery
Example of scope of delivery:
View 1:
View 2:
Unit with a completely hermetically
enclosed compressor, all safety-
related components for monitoring
of the cooling circuit, integrated
heating and heat pump regulator,
sensors mounted in the unit for
the monitoring of hot gas, heating
water forward ow and return
ow temperatures, as well as a
hose for condensate discharge
(connected to heat pump side)
Proceed as follows:
Inspect delivery for outwardly visible signs of dam-
age.
Check to make sure that delivery is complete.
Any defects or incorrect deliveries must be claimed
immediately.
NOTICE.
Note the model. Check the air blow-out direc-
tion of the unit.
– Units with the abbreviation L in the model desig-
nation blow the air out to the left (when viewed
from the control side).
Overview "Technical data/ scope of delivery".
aCCessories neCessary for operation
ATTENTION
Use only original accessories from the manufac-
turer of the unit.
With the LW 310(L), you must select the electrical heat-
ing element for the specic system and order it sepa-
rately.
Air ducts (with air duct accessories) must be ordered
separately.
additional aCCessories
The installation accessories (vibration decouplers) for
air/water indoor installation heat pumps must be or-
dered separately.

9
We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
Installation and assembly
Observe the following when performing all work:
NOTICE.
Always comply with applicable accident pre-
vention regulations, statutory regulations, ordi-
nances and directives.
WARNING!
The heat pump or heat pump system may
be installed and assembled only by a quali-
ed technician!
NOTICE.
Observe the sound levels of the respective
model.
Overview “Technical data / scope of delivery”,
“Sound” section.
installation loCation
CAUTION.
Install the unit only indoors.
The installation area must be frost-free and dry. It must
meet the requirements of DIN EN 378. It must also fulll
applicable local regulations.
Dimensional drawing and installation plan for re-
spective model.
transport to installation loCation
To prevent damage during transport, always transport
the unit to nal installation location in its original packag-
ing, using a lifting truck.
NOTICE.
You can underpin the LW 251(L) and LW 310(L)
using a lifting truck; transport the other units on
the wooden pallet.
LW 251(L) and LW 310(L)
If it is not possible to transport the unit to the nal instal-
lation location using a lifting truck, you can also transport
the heat pumps using a hand truck (not applicable for the
LW 251(L) and LW 310(L)).
Lifting the unit with pipes
DANGER!
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.
DANGER!
The unit is not fastened to the wooden pal-
let!. Danger of tipping over during trans-
port! This can result in personal injury and
damage to the unit.
– Take suitable precautionary measures
to eliminate the danger of tipping.
DANGER!
Make sure to secure unit against slipping
during transport.
ATTENTION
Never use components and hydraulic connec-
tions on the unit for purposes of transport.

10 We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
Pull lower facing panel upwards and outwards, de-
tach and set securely to the side…
On the back of the unit, remove the sealing grom-
met…
Insert the pipes through the holes in the frame on
the switch cabinet side (= operator side)…
1 Holes in the frame
2 Inserted pipes
Make sure that pipes do not damage cable assem-
blies and components in the unit. Guide pipes care-
fully past cable assemblies and components in the
unit…
Guides pipes through the marked openings on the
back side of the unit…
ATTENTION
Do not damage the hydraulic connections under
any circumstances.
ATTENTION
Do not tilt the unit more than a maximum of 45°
(in any direction).
lifting the unit with pipes
not possible with the lw 251(l) and lw 310(l)!
The LW 140(L) and LW 180(L) units can be lifted with
3/4" and/or 1" pipes (provided by customer) that are suit-
able for the weight of the respective unit. Special holes
are provided in the frame for this purpose.
Proceed as follows:
Remove lower facing panels on the switch cabinet
side (= operator side) side of the unit. To do so,
loosen quick-release screws. Turn counter-clock-
wise 90°…
1 Quick-release screws
2 Lower facing panel

11
We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
Lift the unit on the pipes with at least four people
and carry it to its nal installation location…
WARNING!
Carry the unit horizontally and secure it
against slipping.
Put the unit in its nal installation location. Make
sure that the frame of the unit is in full contact with
the underlying surface…
Remove the pipes and re-place the sealing grom-
mets on the back side of the unit…
If the electrical connections will not be carried out
directly thereafter, mount the lower facing panel on
the operating side.
retraCtable ventilator
In order to allow the unit to be easily transported
through tight cellar spaces and narrow doorways and/or
hallways, the ventilator retracts approx. 10 cm into the
body of the unit.
ATTENTION
Only retract the ventilator into the body of the
unit for transport purposes and extend it to its
original positions following transport.
Proceed as follows:
Remove lower facing panels on the fan side of the unit.
To do so, loosen quick-release screws. Turn counter-
clockwise 90°…
1 Quick-release screws
2 Lower facing panel
Pull lower facing panel upwards and outwards, de-
tach and set securely to the side…
Remove the screws located on the lower side of the
upper facing panel…

12 We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
Slant the facing panel upwards, remove and set aside
in a safe place…
Then remove side facing panels from the unit too
and store safely…
At the fan, thread the two guide rods supplied
through the metal tab and fan…
Then, on both sides, hook the guide rods in the key-
hole slot pattern of the upper metal tab inside the
unit…
On the inside of the device, undo all four nuts (M12)
of the fan's connections and remove together with
the spring washers…
Push the fan in the direction of the evaporator up
to the top metal tab inside the unit…
1 top metal tab inside the unit
Push the screws M12 x 40 (2x) supplied through
the fan and the top metal tab and secure with nuts
M12…
Lower the unit at the installation location. Make
sure that the frame of the unit is in full contact with
the underlying surface and the unit is positioned
horizontally…
Undo the mounting nuts at the top metal tab and
remove the corresponding screws.
Then pull the fan out of the unit and screw tightly
back onto the unit frame (do not forget the spring
washers)…
Remove guide rods and attach all facing panels back
onto the unit.

13
We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
mounting the air duCts
NOTICE.
Note the air blow-out direction of the unit.
– Units with the abbreviation L in the model desig-
nation blow the air out to the left (when viewed
from the control side).
ATTENTION
Use only original accessories or air ducts rec-
ommended by the manufacturer (breglass light-
weight concrete ducts).
Mount air ducts only according to the installa-
tion plan for the respective unit.
Installation plan for respective model.
wall duCt(s) assembly
Proceed as follows:
Remove the parts necessary for the assembly of the
wall duct(s) from their respective boxes...
Next, interlock the 2 pieces of the wall duct(s) that
belong together, as illustrated in the following draw-
ing. Use the lubricant supplied upon delivery to help
in this process...
Afx an additional part as illustrated...
installation
Set the unit on a stable, solid and level, preferably sound-
insulated surface. Make sure that the foundation is de-
signed for the weight of the heat pump.
ATTENTION
In the air outlet area the air temperature is ca.
5 K below the ambient temperature. Under cer-
tain climatic conditions, therefore, an ice layer
can form in the air outlet area.
Install the heat pump so that the air blower does
not blow in the direction of footpaths.
DANGER!
Several people are required to install the
unit.
ATTENTION
Do not tilt the unit more than a maximum of 45°
(in any direction).
NOTICE.
Always observe the installation plan for the re-
spective model. Note the size and minimum
clearances.
Installation plan for respective model.
Set up the unit so that the switch cabinet side (= operat-
ing side) is accessible at all times.

14 We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
NOTICE.
Mount the wall ducts 1 cm above the nished
outer facade.
1 Masonry of the house exterior
2 Insert the wall duct in the
masonry (1 cm above the
nished outer facade)
or retrot (using foam in the masonry):
1 Finished outer facade
NOTICE.
Wall ducts x wall openings, help avoid cold air
transmission in the masonry as well as assist in
the assembly of weather / rain guards and wire
mesh grilles
air duCts assembly
Remove the parts necessary for the assembly of the
air duct(s) from their respective boxes...
Rotate the already-interlocked parts 90° and afx
the nal piece at the bottom...
Rotate the already-interlocked parts by 90° once
again and set up the nal connection...
Stabilise the wall duct from the inside using the
chipboard included with delivery...
Install the wall duct in the masonry from the
house exterior. This can either be done during
the construction phase (by means of sealing)...

15
We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
The interlocking of the air ducts is carried out
as described in the section – entitled "Wall
duct(s) assembly".
seCuring the air duCt into the wall duCt
Proceed as follows:
Pull the roll seal included with delivery over the end
of the air duct...
Push this end of the air duct into the wall duct.
1 Wall duct
2 Air duct
3 Roll seal
4 Bentonite waterproong tape
(apply only after assembling the
unit's connection fastener)
NOTICE.
After the other end of the air duct has been se-
cured to the heat pump, close the opening be-
tween the wall duct and the air duct using the
bentonite waterstop tape included with delivery.
seCuring the air duCt on the heat pump
Proceed as follows:
Clip on the assembly rail and secure it using special
screws to the spots on the air duct designated as
the air intake side...
Stick the adapter base included with delivery on the
edge of the air duct...
Position the air duct on the respective opening of
the air intake side...
Hook the 4 tension springs included with delivery
into the holes provided for them on the air intake
side of heat pump...
Hook the tension springs into the assembly tail that
has been screwed on to the air duct...
Secure a protective cap over the assembly rail...
Repeat – the process on the air output side.
NOTICE.
Don't forget:
After the air ducts have been secured to the
heat pump, close the opening between the wall
duct and the air duct using the bentonite water-
stop tape included with delivery.
NOTICE.
Secure the air ducts to the cover using appropri-
ate measures.
sCreen frame assembly
Screw the screen frame to the wall ducts on both the air
intake and output sides.

16 We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
Set the weather / rain guards on the assembly frame
in the wall duct and screw down...
8 x
NOTICE.
If the wall duct is positioned above ground level,
attach the weather guard.
If the wall duct is positioned in a light well (be-
low ground level), attach the rain guard.
Repeat – the process on the air output side.
installation / ConneCtion to heating CirCuit
DANGER!
Danger of fatal injury due to electric cur-
rent!
Before opening the unit, disconnect the
system from the power supply and secure
it from being switched back on!
ATTENTION
Connect the unit to the heating circuit accord-
ing to the hydraulic diagram for the respective
model.
NOTICE.
The screen frame has no function, it is included
solely to provide an optically attractive transi-
tion to the wall duct.
wire mesh grille and weather / rain guards
assembly
Proceed as follows:
Remove the wire mesh grille and the weather / rain
guards as well as the assembly frame and fastening
material from their respective boxes...
From the outside of the house inwards, insert the
assembly frame into the wall duct on the air intake
side and secure with screws...
8 x
Position the wire mesh grille in the assembly frame...

17
We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
WARNING!
The condenser may be rinsed only by cus-
tomer service personnel authorized by
the manufacturer .
Connect the unit to the pipes of the heating cir-
cuit via vibration decouplers. They must be installed
in order to prevent damage from vibrations to the
pipes.
NOTICE.
Vibration decouplers are available as accesso-
ries.
The connections for the heating water outow (forward
ow) and the hot water inow *(return ow) are marked
accordingly.
For positioining of the connections, reference
the dimensional drawing for the respective
model.
Condensate disCharge
The condensation water that accumulated from the air
must be drained via the pre-mounted hose in the unit
for condensate discharge. To do so, connect the hose
for condendate discharge with a water drain.
For positioning of the connection for conden-
sate discharge, see dimensional drawings for the
respective model.
1 Hose for condensate discharge
in interior of unit
2 Connection for the condensate
discharge on the outside of the unit
WARNING!
Guide the pre-mounted hose in the unit
for condensate discharge in the interior of
the unit as a siphon, as shown in the illus-
tration.
“Hydraulic connection” instructions.
NOTICE.
Check to make sure that the diameters and
lengths of the pipes for the heating circuit are
sufciently dimensioned.
NOTICE.
Circulating pumps must be multi-stage, regulated
pumps. They must be able to deliver at least the
minimum hot water ow rate required for your
model.
Overview “Technical data / scope of delivery”,
“heating circuit” section.
ATTENTION
The hydraulic system must be equipped with a
buffer tank, the required volume of which de-
pends on the model of your unit.
Overview “Technical data / scope of delivery”,
“heating circuit, buffer tank” section.
ATTENTION
When installing the connections, always secure
the connections on the unit from twisting, in or-
der to prevent damage to the copper pipes in
the interior of the unit.
Proceed as follows:
Rinse heating circuit thoroughly prior to connecting
the unit to the heating circuit…
NOTICE.
Contamination and deposits in the heating cir-
cuit can cause malfunctions.
Install shut-off devices for the hot water outow
(forward ow) and hot water inow (return ow)
on the heat pump side…
NOTICE.
During installation of the shut-off devices, the
liqueer of the heat pump can be rinsed, if nec-
essary.

18 We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
Circulating pumps
ATTENTION
Always note the model.
Do not use regulated circulating pumps.
Circulating pumps and domestic hot water circu-
lation pumps must be multi-stage pumps.
Water heating
Water heating with the heat pump requires an addition-
al hot water circuit, parallel to the heating circuit. Make
sure that the heating water charge is not channeled
through the buffer tank of the heating circuit.
“Hydraulic connection” instructions.
Hot-water tank
If the heat pump will be used for heating hot water, you
must integrate special hot-water tanks in the heat pump
system. The storage volume must be sufcient so that
the required hot water quantity is available even during
a power outage.
NOTICE.
The heat exchanger surface of the hot water
tank must be dimensioned so that the heating
capacity of the heat pump is transferred with
minimal spreading.
We offer a variety of hot-water tanks for you to choose
from. They are optimized for use with your heat pump.
NOTICE.
Integrate the hot-water tank in the heat pump
system corresponding to the hydraulic diagram
for your system.
“Hydraulic connection” instructions.
Discharge of the condensate into the sewage system is
permitted only via a funnel siphon, which must be acces-
sible at all times.
Pressure relief
Equip the heating circuit in accordance with local stand-
ards and directives with a safety valve and an expansion
tank.
Also install lling and emptying devices, shut-off devices
and non-return valves in the heating circuit.
Overow valve
Use an overow valve for tanks integrated in series to
ensure the minimum ow rate of the heating circuit vol-
ume ow through the heat pump. The overow valve
must be dimensioned so that the minimum ow rate of
the volume ow through the heat pump is ensured when
the heating circuit is shut off.
Buffer tank
The hydraulic connection of the heat pump requires a
buffer tank in the heating circuit. It ensures a minimum
operating time of the heat pump when the heating cir-
cuit valves are closed. The required volume of the buffer
tank is calculated based on the following formula:
VBuffer tank = minimum ow rate of heat circuit volume ow / hour
10
For the minimum ow rate of the heat cir-
cuit volume ow, see overview “Technical
data / Scope of delivery”, “Heating circuit” sec-
tion.
In mono-energetic air/water systems, integrate the buff-
er tank in the heating water outow (forward ow) be-
fore the overow valve.

19
We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
sor through the rubber sockets on the facing panel
in the unit…
•
Cut out the rubber sockets on the facing panel…
For positioning of the rubber sockets for insert-
ing the wires, see "dimensional drawing" for the
respective model.
•
Insert the cables through the rubber sockets in the
unit…
The wires inside the unit are guided in a closed wire
duct to theterminals on the switch plate…
Install electric connections according to the termi-
nal diagram that applies to your model…
Terminal diagram for respective model.
ATTENTION
Ensure clockwise rotary eld of the load power
supply (compressor).
– An incorrect rotary eld of the compressor
during operation can cause serious, irreparable
damage to the compressor.
ATTENTION
Make sure to equip the power supply of the heat
pump with a 3-pole automatic cut-out with at
least 3mm contact gap.
Note the level of the release current.
Overview “Technical data / scope of delivery”,
“Electric” section.
ATTENTION
If using the unit in 3~230V systems, please note
that the residual-current circuit breaker (RCCB)
used must be AC-DC sensitive.
NOTICE.
Factory setting for the electric heating element
in units with integrated electic heating elements
is 6 kW (9 kW). It can be changed at contactor
Q5 (Q6) for 2 (3) or 4 kW (6kW).
For further information, see the adhesive label
on the electric heating element.
Electrical connections
Observe the following when performing all work:
DANGER!
Danger of fatal injury due to electric cur-
rent!
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!
DANGER!
Observe the relevant EN-, VDE and/or ap-
plicable local safety regulations during the
installation and during all electrical work.
Comply with technical connection re-
quirements of the responsible power sup-
ply company (if required by the latter)!
NOTICE.
All live wires must be stripped before they are
installed in the cable duct of the switch cabinets!
power ConneCtion
Proceed as follows:
If the unit is closed, open the facing panels on the
operating side…
"Installation".
Open electrical switch cabinet of unit…
Example of open
electrical switch cabinet…
Lead 230 V power cable, power cable for circulat-
ing pumps and cable for external temperature sen-

20 We reserve the right to modify technical specifications without prior notice.
83054400aUK © Alpha-InnoTec GmbH
NOTICE.
The control element of the heat and heat pump
regulator can be connection with a computer
or network using an network cable designed
for such pruposes, thus allowing the heating and
heat pump regulator to be controlled remotely.
If such a connection is desired, install a screened
network cable (category 6, with RJ-45 plug)
through the unit when installing the connections
and run it through the front facade of the unit,
parallel to the already-present heating and heat
pump regulator control cable.
Close electrical switch cabinet of unit…
Attach the lower facing panels.
Rinsing, lling and bleeding
the system
ATTENTION
The system must be absolutely free from air be-
fore commissioning.
water quality of the fill and additional water
in hot water heating systems
aCCording to vdi 2035 part i and ii
Use of modern, energy-efcient heat pump systems
is becoming increasingly widespread. Their ingenious
technology enables these systems to achieve very good
efciencies. The decreasing space available for heat
generators has led to the development of compact
units with increasingly smaller cross-sections and high
capacities. This means the complexity of the systems and
the material diversity are also increasing, which plays an
important role especially in their corrosion behaviour.
Alpha InnoTec ensures continuous technological
advances, but all these technical renements require
the system to be operated with correctly lled heating
water. The heating water not only affects the efciency
of the system, but also the life of the heat generator and
the heating components of a system.
The guide values of VDI 2035 Part I and Part II must
therefore be complied with as minimum requirements
for proper operation of the systems. Our practical
experience has shown that the safest and most trouble-
free running of the systems is achieved with so-called
low-salt operation.
VDI 2035 Part I gives important information and
recommendations regarding scaling and its prevention in
heating and domestic hot water heating systems.
VDI 2035 Part II primarily deals with the requirements
for reducing heating water corrosion in hot water
heating systems.
prinCiples of part i and part ii
The occurrence of scaling and corrosion damage in hot
water heating systems is low, if
- proper planning and commissioning is carried out
- the system is closed in corrosion terms
- adequately dimensioned pressurising is integrated
- the guide values for the heating water are complied
with
- and regular servicing and maintenance are carried out.
A system log should be kept, in which the relevant
planning data is entered (VDI 2035).
damage that Can oCCur in Case of non-
ComplianCe
- Malfunctions and the failure of components (e.g. pumps,
valves)
- Internal and external leaks (e.g. from heat exchangers)
- Cross-section reduction and blockaging of components
(e.g. heat exchanger, pipes, pumps)
- Material fatigue
- Gas bubbles and gas cushion formation (cavitation)
- Negative effect on heat transfer (formation of coatings,
deposits) and associated noises (e.g. boiling noises,
ow noises)
limesCale – the energy killer
Filling with untreated drinking water inevitably leads to
the precipitation of all calcium as scale. The consequence:
limescale deposits form on the heat transfer surfaces of
the heating. The efciency falls and the energy costs rise.
A rule of thumb is that 1 millimetre of limescale deposit
causes an energy loss of 10%. In extreme cases it can
even cause damage to the heat exchangers.