alphainnoTec LW 250 User manual

We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH
HEAT PUMPS
Operating Manual
Inside installation
A IR / WAT ER
UK
LW 250(L)
LW 330(L)
LW 320H(L)

2We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © 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.
CAUTION.
Indicates a possibly dangerous situation,
which could result in property damage.
NOTICE.
Emphasized information.
€ENERGY SAVING TIP
Indicates suggestions that help to save en-
ergy, 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..................................................................7
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........................................................16
PRESSURE RELIEF.....................................................................17
OVERFLOW VALVE..................................................................17
BUFFER TANK...........................................................................17
CIRCULATING PUMPS ...........................................................17
WATER HEATING ....................................................................17
HOT-WATER TANK .................................................................17
ELECTRICAL CONNECTIONS .............................................18
RINSING, FILLING AND BLEEDING THE SYSTEM ..........19
INSULATING THE HYDRAULIC CONNECTIONS ..........19
INSTALLATION OF THE CONTROL ELEMENT ...............20
INSTALLATION AND REMOVAL OF THE SCREEN.........21
COMMISSIONING ...................................................................22
Safety temperature limiter................................................23
DISMANTLING .........................................................................23
TECHNICAL DATA/ SCOPE OF DELIVERY ........................24
PERFORMANCE CURVES
Heating capacity/COP / power consumption /
Heat pump pressure loss
LW 250(L) ............................................................................26
LW 330(L) ............................................................................27
LW 320H(L) .........................................................................28
DIMENSIONAL DRAWINGS AND INSTALLATION PLANS
Dimensional drawings
LW 250, LW 320H ..............................................................29
LW 250L, LW 320HL..........................................................30
Installation plans LW 250(L), LW 320H(L)
Installation plan version 1 .................................................31
Installation plan version 2 .................................................32
Installation plan version 3 .................................................33
Installation plan version 4 .................................................34
Dimensional drawings
LW 330 .................................................................................35
LW 330L ...............................................................................36
Installation plans LW 330(L):
Installation plan version 1 .................................................37
Installation plan version 2 .................................................38
Installation plan version 3 .................................................39
Installation plan version 4 ................................................ 40
TERMINAL DIAGRAMS
LW 320H(L) .........................................................................41
LW 250(L), LW 330(L) .......................................................42
CIRCUIT DIAGRAMS
LW 250(L) ............................................................................43
LW 320H(L) .........................................................................46
LW 330(L) ............................................................................49
APPENDIX
EC DECLARATIONS OF CONFORMITY............................52
GENERAL CHECKLIST ...........................................................55
COMPLETION REPORT FOR HEAT PUMP SYSTEMS ......57
CUSTOMER SERVICE
Addresses in the event of a service call..........................58
We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH

4We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © 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 com-
pany of the use of a heat pump or heat
pump system.
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 on-
ly by qualied electricians.
Before opening the unit, disconnect the
system from the power supply and secure
it from being switched back on!
DANGER!
Only qualied technicians (trained heating,
cooling, refrigerant and electrical techni-
cians) 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.
CAUTION.
For safety reasons:
Never disconnect the unit from the power
supply, unless the unit is being opened.

5
We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH
CAUTION.
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).
WARNING!
The integration of the heat pump in venti-
lation systems is not permissible. The use
of the cooled air for cooling purposes is
not permitted.
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
warranties 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.
UK830510/191106 © 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 tempera-
tures.
A lower ow temperature on the hot wa-
ter side increases the efciency of the sys-
tem.
€ENERGY SAVING TIP
When letting in fresh air. do not leave win-
dows open for an extended period in or-
der to save energy and reduce your heat-
ing costs.

7
We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH
Care of the unit
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 destroy
the surfaces and could also damage the technical compo-
nents 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.
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.
UK830510/191106 © Alpha-InnoTec GmbH
Scope of delivery
Example of scope of delivery:
Views of LW 250(L) and LW 320H(L):
View LW 330(L):
Compact 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
direction of the unit.
– Units with the abbreviation L in the
model designation blow the air out to
the left (when viewed from the control
side).
Overview "Technical data /scope of delivery".
aCCessories neCessary for operation
CAUTION.
Use only original accessories from the
manufacturer of the unit.
With the LW 250(L) and the LW 330(L), you must select
the electrical heating element for the specic system and
order it separately.
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.
UK830510/191106 © Alpha-InnoTec GmbH
Installation and assembly
Observe the following when performing all work:
NOTICE.
Always comply with applicable accident
prevention regulations, statutory regula-
tions, ordinances 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 330(L) using a
lifting truck; transport the LW 250(L) and
LW 320H(L) on the wooden pallet.
LW 330(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 LW 250(L) and LW320H(L) heat pumps using a hand
truck (not applicable for the LW 300(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!
Danger of tipping over during transport!
(LW 250(L) and LW 320H(L) are not fas-
tened to the wooden pallet!). This can re-
sult 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.
CAUTION.
Never use components and hydraulic con-
nections on the unit for purposes of trans-
port.

10 We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © 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...
CAUTION.
Do not damage the hydraulic connections
under any circumstances.
CAUTION.
Do not tilt the unit more than a maximum
of 45° (in any direction).
lifting the unit with pipes
only possible with the lw 250(l) and lw
320h(l)!
The LW 250(L) and LW 320H(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.
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.
UK830510/191106 © 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.
CAUTION.
Only retract the ventilator into the body
of the unit for transport purposes and ex-
tend it to its original positions following
transport.
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

12 We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH
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...
Slant the facing panel upwards, remove and set aside
in a safe place...
Loosen the four mounting nuts on the ventilator...
Slide the ventilator into the unit housing...
1 Mounting the ventilator within
the inside of the unit
The ventilator can be retracted into the unit the to-
tal length of the mounting.
Secure the ventilator using the mounting nuts and
transport the unit through the narrow passage-
ways...
Put the unit in its nal installation location. Make
sure that the frame of the unit is in full contact with
the underlying surface and the unit is situated hori-
zontally...
Loosen the mounting nuts on the ventilator, ex-
tract the ventilator from the unit housing and then
retighten the mounting nuts...
Re-attach the upper and lower facing panels on the
fan side.

13
We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © 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 designation blow the air out to
the left (when viewed from the control
side).
CAUTION.
Use only original accessories or air ducts
recommended by the manufacturer (ber-
glass lightweight concrete ducts).
Mount air ducts only according to the in-
stallation plan for the respective unit.
Installation plan for respective model.
CAUTION.
Insert air ducts at least 15 cm into solid
masonry so that the air ducts are self-sup-
porting over a maximum length of 1 me-
ter. Extended air ducts and bends must be
fastened to the ceiling using perforated
straps or mounting rails.
Insert air duct of the fan side into the masonry. Cut
to length if necessary...
Secure air duct in masonry on all 4 sides (for exam-
ple using wedges)...
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.
CAUTION.
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 outlet
area.
Install the heat pump so that the air blow-
er does not blow in the direction of foot-
paths.
DANGER!
Several people are required to install the
unit.
CAUTION.
Do not tilt the unit more than a maximum
of 45° (in any direction).
NOTICE.
Always observe the installation plan for
the respective 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.
UK830510/191106 © Alpha-InnoTec GmbH
Place the left end of the upper horizontal betonite
waterstop tape ush with the inner edge of the left
vertical betonite waterstop tape and attach to the
air duct.
1 Flush attachment
2 Raised area
H Horizontal betonite waterstop tape
V Vertical betonite waterstop tape
Press in the raised area and attach to air duct to
create an airtight connection...
Repeat instructions on right end of the upper
horizontal betonite waterstop tape...
Repeat instructions - with lower horizontal
betonite waterstop tape...
Push unit with fan side (= air outlet side) to the air
duct until the cover plate is in contact with the be-
tonite waterstop tape...
NOTICE:
Do not exert force. Betonite waterstop
tape closes the gap between the unit and
the air duct airtight as soon as it has ex-
panded completely.
Center air outlet of the unit on the air
duct.
Attach vertical and horizontal betonite waterstop
tapes to the air duct of the air inlet side. Follow -
instructions...
Attach betonite waterstop tape on the vertical
front sides of the duct from top to bottom and cut
off ush....
NOTICE.
Maximum work time from opening the
betonite waterstop tape roll until comple-
tion of the connection: 1 hour.
Cut off the rst 3 cm of the betonite wa-
terstop tape roll and throw away.
Cut compression tapes for horizontal front sides of
the duct to dimension X.
X = LW (inside diameter)
+ 20 mm allowance
Position upper horizontal betonite waterstop tape
in the center and attach, moving in the direction of
the vertical betonite waterstop tapes until about 50
mm before the edge of the vertical betonite water-
stop tape...
1 Leave about 50 mm unattached.
2 Work from the inside outward

15
We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH
Insert air duct of the air inlet side into the masonry,
center on the air inlet of the unit and secure in ma-
sonry (see instructions )...
Support air duct with wood slats, then check the
spacing and horizontal and vertical alignment and
correct, if necessary (air inlet and outlet of the unit
must be centered on the air ducts).
Insert foam in hollow spaces between air ducts and
masonry inside and outside of the building so that
they are watertight...
After foam has hardened, cut off any protruding
foam.
CAUTION.
Insulate the discrepancy between the air
duct end(s) and the wall sink edge to pre-
vent moisture penetration of the mason-
ry. The insulation must be watertight and
UV-resistant. Take into account the in-
stalled depth of any weather grilles.
Protect air duct inlets outside of the building...
If air ducts are above-ground, insert and secure
weather grilles at air duct inlet and outlet...
If air ducts are below-ground (for example, in light
wells), mount wire mesh grille (wire mesh 12 x 12
mm, exposed cross section ≥ 80%) on the air duct
inlet and outlet...
Weather grilles and wire mesh grilles are accesso-
ries that are not included in the scope of delivery.
Apply insulation tape (width: 10 mm) to the connec-
tions between the heat pump and the air ducts.
NOTICE.
Insulation tape applied together with be-
tonite waterstop tape provides a dou-
ble seal, which prevents the transmission
of cold air and therefore moisture at the
connections between the heat pump and
the air ducts.
CAUTION.
Apply insulation tape over the betonite
waterstop tape from air ducts all the way
to the housing of the heat pump. Insula-
tion tape must have direct contact with
the housing of the heat pump.
1 Air duct
2 Betonite waterstop tape
3 Heat pump housing
4 Overlapping of heat
pump ca. 5 – 10 mm
5 Insulation tape (width: 10mm)
Wind insulation tape completely around the air duct
and attach with the air duct and the heat pump...
Remove support slats under the air ducts.

16 We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH
Proceed as follows:
Rinse heating circuit thoroughly prior to connecting
the unit to the heating circuit...
NOTICE.
Contamination and deposits in the heating
circuit 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 devic-
es, the liqueer of the heat pump can be
rinsed, if necessary.
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 ac-
cessories.
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.
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!
CAUTION.
Connect the unit to the heating circuit ac-
cording to the hydraulic diagram for the
respective model.
“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 de-
liver at least the minimum hot water ow
rate required for your model.
Overview “Technical data / scope of delivery”,
“heating circuit” section.
CAUTION.
The hydraulic system must be equipped
with a buffer tank, the required volume of
which depends on the model of your unit.
Overview “Technical data / scope of delivery”,
“heating circuit, buffer tank” section.
CAUTION.
When installing the connections, always
secure the connections on the unit from
twisting, in order to prevent damage to
the copper pipes in the interior of the
unit.

17
We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH
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 circuit vol-
ume ow, see overview “Technical data / Scope
of delivery”, “Heating circuit” section.
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.
Circulating pumps
CAUTION.
Always note the model.
Do not use regulated circulating pumps.
Circulating pumps and domestic hot wa-
ter circulation 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 wa-
ter tank must be dimensioned so that the
heating capacity of the heat pump is trans-
ferred with minimal spreading.
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.
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
Always use an overow valve to ensure the minimum
ow rate of the heating circuit volume 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-

18 We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH
Example: Open electric switch
cabinet of the LW 330(L)...
Lead 230 V power cable, power cable for circulat-
ing pumps and cable for external temperature sen-
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.
CAUTION.
Ensure clockwise rotary eld of the load
power supply (compressor).
– An incorrect rotary eld of the com-
pressor during operation can cause se-
rious, irreparable damage to the com-
pressor.
CAUTION.
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.
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 hy-
draulic diagram for your system.
“Hydraulic connection” instructions.
Electrical connections
Observe the following when performing all work:
DANGER!
Danger of fatal injury due to electric cur-
rent!
Electrical connections may be installed on-
ly 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
If the unit is closed, open the facing panels on the
operating side...
"Installation".
Open electrical switch cabinet of unit...

19
We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH
Rinsing, lling and bleeding
the system
Rinse, Fill and bleed the heating circuit...
In addition, bleed the condensor of the heat pump...
•
Open the lower facing panel...
•
Open the bleeding valve...
Following bleeding, close the lower facing panel.
Insulating the hydraulic
connections
Insulate the vibration decouplers and the pipes of the
heating circuit.
NOTICE.
Insulate in accordance with applicable lo-
cal standards and directives.
NOTICE.
The electric heating element is connected
for 6kW at the factory in units with inte-
grated electic heating elements. It can be
connected for 2 (3) or 4 kW (6kW) on the
contactor.
For further information, see the adhesive label
on the electric heating element.
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 al-
lowing the heating and heat pump regula-
tor 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 install-
ing the connections and run it through the
front facade of the unit, parallel to the al-
ready-present heating and heat pump reg-
ulator control cable.
Close electrical switch cabinet of unit....
Attach the lower facing panels.

20 We reserve the right to modify technical specifications without prior notice.
UK830510/191106 © Alpha-InnoTec GmbH
Installation of the control
element
DANGER!
Danger of fatal injury due to electric cur-
rent!
Electrical connections may be installed on-
ly by qualied electricians.
Before opening the unit, disconnect the
system from the power supply and secure
it from being switched back on!
Situated at different heights in the front facade of the
unit are recesses (each with 4 recesses) for the fastening
of the control element:
1 four upper recesses
2 four lower recesses
4 hooks are located on the back side of the control el-
ement and can be used to hang the control element on
the front facade of the unit:
Proceed as follows:
Hang the control element's hooks on the recesses
of the front facade (either in the upper or lower re-
cesses)...
Example:
Control element in upper recesses
Push the control element down until it locks into
position...
Stick the heating and heat pump regulator's control
cable into the right bushing on the bottom of the
control element...