alphainnoTec WZS Series User manual

We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
HEAT PUMPS
Operating Manual
Heat Station
BRINE/WATER
UK
WZS Series

2We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
Please read first
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 sub-
sequent owners or operators 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 res-
trictions.
It is possible that this operating manual may contain ins-
tructions that seem incomprehensible or unclear. In case of
questions or uncertainty, contact the factory customer ser-
vice department or the manufacturer’s local service part-
ner.
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 assig-
ned to work on or operate the unit. Treat all constituent
parts confidentially.The information contained herein is pro-
tected by copyright. No part of this information may be re-
produced, transmitted, copied, stored in electronic data sys-
tems or translated into another language, either wholly or
in part, without the express written permission of the ma-
nufacturer.
Symbols
The following symbols are used in the operating manual.
They have the following meaning:
Information for operators.
Information or instructions for qualified techni-
cians.
DANGER!
Indicates a direct impending danger resul-
ting in severe injuries or death.
WARNING!
Indicates a possibly dangerous situation that
could result in severe injuries or death.
CAUTION!
Indicates a possibly dangerous situation that
could result in medium or light injuries.
CAUTION.
Indicates a possibly dangerous situation,
which could result in property damage.
NOTICE.
Emphasized information.
Reference to other sections of the operating
manual.
Reference to other instructions of the manufac-
turer.

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We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
Contents
INFORMATION FOR OPERATORS AND
QUALIFIED SPECIALISTS
PLEASE READ FIRST .............................................................................. 2
SYMBOLS ..................................................................................................2
INTENDED USE ...................................................................................... 4
EXCLUSION OF LIABILITY ................................................................. 4
EC CONFORMITY ................................................................................. 4
SAFETY ......................................................................................................4
CUSTOMER SERVICE.............................................................................5
WARRANTY / GUARANTEE ..............................................................5
DISPOSAL .................................................................................................5
INFORMATION FOR OPERATORS
OPERATING PRINCIPLE OF HEAT PUMPS ....................................6
AREA OF UTILIZATION.......................................................................6
OPERATION.............................................................................................6
COOLING FUNCTION........................................................................ 6
CARE OF THE UNIT..............................................................................8
MAINTENANCE OF THE UNIT ......................................................... 8
Cleaning and rinsing of unit components....................................8
MALFUNCTIONS ...................................................................................8
INSTRUCTIONS FOR QUALIFIED TECHNICIANS
SCOPE OF DELIVERY ............................................................................ 9
INSTALLATION AND ASSEMBLY .......................................................9
Installation area .................................................................................9
Transport to installation location................................................10
Installation ........................................................................................11
Installation of the module box.....................................................12
Installation of the hydraulic connections...................................13
Opening the angle ball valves on the module box ..................18
Safety component ...........................................................................18
Expansion vessels............................................................................18
ELECTRICAL CONNECTIONS ........................................................19
RINSING AND FILLING THE UNIT.................................................21
Cleaning and rinsing of unit components..................................21
Rinsing and filling the heat source...............................................21
Rinsing and filling the hot water and heating water circuits.22
BLEEDING...............................................................................................23
Bleeding the circulating pump of the heating circuit...............23
Bleeding the module box ..............................................................23
Bleeding the circulating pump of the heat source...................23
Bleeding the heat source
for a unit without cooling function......................................23
Bleeding the heat source
for a unit with cooling function............................................23
OVERFLOW VALVE...............................................................................25
INSULATING THE HYDRAULIC CONNECTIONS ....................25
INSTALLATION OF THE CONTROL ELEMENT..........................26
MOUNTING AND REMOVAL OF THE SCREEN.........................26
INSTALLATION OF THE ROOM THERMOSTAT
FOR THE COOLING FUNCTION............................................27
HOT-WATER TANK..............................................................................27
COMMISSIONING................................................................................28
Safety temperature limiter............................................................28
DISMANTLING......................................................................................29
TECHNICAL DATA/SCOPE OF DELIVERY
WZS 60H(/K) – WZS 100H(/K) .................................................30
PERFORMANCE CURVES
Heating capacity/COP / Power consumption / Free compression
WZS 60H(/K) ..................................................................................32
WZS 80H(/K) ..................................................................................33
WZS 100H(/K)................................................................................34
DIMENSIONAL DRAWINGS AND CLEARANCE DIMENSIONS
Dimensional drawings....................................................................35
Clearance dimensions....................................................................36
TERMINAL DIAGRAM
WZS 60H(/K) – WZS 100H(/K) .................................................37
CIRCUIT DIAGRAMS
WZS 60H(/K) – WZS 100H(/K) .................................................38
APPENDIX
EC DECLARATION OF CONFORMITY ........................................40
GENERAL CHECKLIST .......................................................................41
COMPLETION REPORT FOR HEAT PUMP SYSTEMS................43
SPACE FOR NOTES..............................................................................45
CUSTOMER SERVICE
CUSTOMER SERVICE...........................................................................46
Addresses in the event of a service call.....................................46

4We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
Intended use
The unit may be used only for the intended use.This means:
•for heating.
•for heating hot water.
•for cooling.
(Availability of the cooling function depends on
the model).
“Cooling function” section.
The unit may be operated only within its technical parame-
ters.
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.
Exclusion of liability
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 ma-
nufacturer;
•if the unit or components in the unit are modified,
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
The unit is operationally safe when used for the intended
purpose. The construction and design of the unit conform
to the state of the art, 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 al-
ready 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 regula-
tions. This applies in particular to the wearing of personal
safety gear.
DANGER!
Unit operates under high electric voltage!
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 personal
injury or material damage.Therefore:
– Shut down unit.
– Ventilate installation location.
– 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.
UK830301/170306 © Alpha-InnoTec GmbH
Customer service
For technical assistance, contact the factory customer ser-
vice department or the manufacturer’s local service part-
ner.
Overview “Customer service”.
Warranty / Guarantee
For warranty and guarantee conditions, please refer to the
purchase documents.
NOTICE.
Please contact your dealer concerning war-
ranties and guarantees.
Disposal
When decommissioning the unit, always comply with appli-
cable laws, directives and standards for the recovery, recyc-
ling and disposal of materials and components of cooling
units.
“Dismantling”.

6We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
Operating principle of heat
pumps
Heat pumps operate on the principle of a refrigerator: the
same technology, only with the opposite effect.The refrige-
rator extracts heat from foods, which is released into the
room through fins on the back.
The heat pump extracts heat from our environment: air,
earth or ground 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 floor he-
ating:
4/4 = usable energy
ca. 3/4 = environmental energy
ca. 1/4 = external electrical energy
Area of utilization
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”.
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 regulator.
NOTICE.
Make sure that the control settings are cor-
rect.
Operating manual of the heating and heat pump re-
gulator.
To ensure that your heat pump or heat pump system ope-
rates efficiently and ecologically, the following are especially
important:
NOTICE.
Avoid unnecessarily high ow temperatures.
A lower ow temperature on the hot water
side increases the efciency of the system.
When letting in fresh air, do not leave windows open for an
extended period in order to save energy and reduce your
heating costs.
Cooling function
The cooling function is available only for heat pumps with
the model designator K.
It is not possible to retrofit heat pumps for cooling without
this designator. For the model designator, please refer to the
purchase documents. It is also on the rating plate attached
to the outside of the unit.

7
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UK830301/170306 © Alpha-InnoTec GmbH
The cooling function is based on the principle of passive
cooling.An existing low temperature level is mixed to a tem-
perature above the dew point and transferred to the heating
medium by means of a heat exchanger. The heat pump re-
mains switched off during cooling;only the circulating pumps
for the heating circuit and the heat source are in operation.
The cooling power depends on the heat source tempe-
rature, which varies seasonally. For example, if the ground
stored more heat toward the end of the summer, the coo-
ling power of a brine/water pump is reduced.
The effectiveness of passive cooling is generally not compa-
rable to that of an air conditioning system.
NOTICE.
The use of the passive cooling function re-
quires oor or wall heating.
the room thermostat for the cooling function
The room thermostat is used to switch the cooling function
on and off:
I Cooling function on
Cooling function off
utilization of the cooling function
The heating and heat pump regulation program activates the
cooling function only if the following conditions are fulfilled:
•Heat pump model must have integrated cooling
function.
•Room thermostat for the cooling function must
be switched on.
•Temperature of the heat source must
be ≥ +5 °C.
•Heat pump must not currently be occupied with
“heating” or “water heating”.
If the heat pump regulation program sends the
command “water heating” to the heat pump, the
cooling function of the heat pump automatically
stops as long as the water is heating.
•The “Automatic” setting must be selected on the
control element under “Operating mode: coo-
ling”.
•The outdoor temperature release set on the con-
trol element must be exceeded.
Operating manual of the heating and heat pump re-
gulator.
The cooling function can be used in two variants:
Variant 1:
Manual switching from heating to cooling opera-
tion (and vice versa). This variant operates at a
pre-set forward flow temperature.
Operating manual of the heating and heat pump re-
gulator.
Variant 2:
Automatic switching from heating to cooling ope-
ration (and vice versa). This variant can operate
using a cooling curve.
NOTICE.
Variant 2 is possible only if a Comfort board
(available at extra charge) is built into the
heating and heat pump regulator.
Comfort board operating manual.

8We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
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 sur-
faces and could also damage the technical components of
the unit.
Maintenance of the unit
The cooling circuit of the heat pump requires no regular
maintenance.
The components of the heating circuit and the heat source
(valves, expansion vessels, circulating pumps) should be in-
spected annually by a qualified technician.
The hot water tank should be cleaned once each year.To do
this, first empty the hot water tank.Then remove the Styro-
foam guard through the service hole of the hot water tank.
Screw off the flange cover of the service hole.
1 Hot water tank service hole
(under Styrofoam cover)
2 Hot water tank emptying valve
Check the safety valve (provided by customer) for the hot
water tank at regular intervals. Since an external current
anode is built in, the anode requires no maintenance.
It is a good idea to have a maintenance contract with a he-
ating installation company.The company will conduct all re-
quired maintenance at regular intervals.
cleaning and rinsing of unit components
CAUTION!
Unit components may be cleaned and rinsed
only by customer service personnel authori-
zed by the manufacturer. Use only liquids re-
commended by the manufacturer.
Rinsing of the liqueer with chemical clea-
ning agents must be followed by neutrali-
zation of residue and intensive rinsing with
water. Always observe the technical data of
the manufacturer of the heat exchanger.
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 re-
gulator.
DANGER!
Service and repair work on the components
of the unit may be performed only by custo-
mer service personnel authorized by the ma-
nufacturer.
Overview “Customer service”.
Note that no malfunction is displayed if the safety tempera-
ture limiter on the electric heating element has been trig-
gered.
Commissioning”, “Safety temperature limiter”
section.

9
We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
Scope of delivery
Example of scope of delivery:
1 Compact unit with integrated
hot water tank, electric heating
element, integrated circulating
pump heating circuit and sensors
2 Screen
3 Vibration decouplers for
heat source connection
4 Control element of the heating
and heat pump regulator
5 Safety component for heating circuit
6 Package with 4 feet, 1 outdoor
sensor, 1 insulating set, 2 ball valves
(model with designator K: 1 ball
valve), 8 seals, 1 service hose, 1 cap
valve, 1 mount for expansion vessel
of heating circuit, (model with
cooling function: room thermostat)
7 Expansion vessel of heating circuit, 25 l
8 Expansion vessel of heat source, 12 l
9 Connection assembly for heat source
10 Module box with integrated
circulating pump of heat source
Proceed as follows:
Inspect delivery for outwardly visible signs of
damage.
Check to make sure that delivery is complete.
Any defects or incorrect deliveries must be claimed
immediately.
NOTICE.
Note the model.
Overview “Technical data/scope of delivery” or
rating plate on unit.
Installation and assembly
Observe the following when performing all work:
NOTICE.
Always comply with applicable accident pre-
vention regulations, statutory regulations,
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 area
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 fulfill applica-
ble local regulations.

10 We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
CAUTION.
Do not tilt the module box more than a ma-
ximum of 45° (in any direction).
CAUTION.
Never use components, pipes of the coo-
ling circuit or hydraulic connections on the
module box for transport purposes.
CAUTION.
Do not damage the hydraulic connections under
any circumstances.
Dispose of angle bracket, transport and packaging material
properly and in accordance with ecological principles.
We recommend removing the front panel to reduce
the weight of the unit for further transport.
Loosen quick-release screws for the front panel.
Turn counter-clockwise 90°.
Lift front panel and set aside in a safe place.
Transport unit to installation location using a hand
truck or have two persons carry it.
DANGER!
Make sure to secure unit on the hand truck
against slipping during transport.
CAUTION.
Do not damage the hydraulic connections
under any circumstances.
– Push hand truck only beneath back of
unit for transport.
NOTICE:
Without the module box, the unit can be
transported horizontally.
transport to installation location
To avoid damage during transport, you should transport the
unit to the final installation location (secured on a wooden
pallet) using a lifting truck.
If it is not possible to transport the unit to the final installa-
tion location using a lifting truck, you can also transport the
unit using a hand truck.
DANGER!
Several people are required to transport the
unit. Do not underestimate the weight of the
units.
Overview “Technical data/scope of delivery”, “Ge-
neral unit data” section.
CAUTION!
Wear safety gloves.
DANGER!
Unit is not fastened to the wooden pallet.
The unit can tip when being lifted down and
during transport with a hand truck. This can
result in personal injury and damage to the
unit.
– Take suitable precautionary measures
to eliminate the danger of tipping.
Proceed as follows if transport with a lifting truck is not
possible:
Remove packaging and transport material. Remove
extra box and module box from the wooden pallet
and bring to installation location.
Use straps to lift and carry the module box.

11
We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
1 Recessed grips
2 Carrying strap
CAUTION.
Never use components and hydraulic con-
nections on the unit for purposes of trans-
port.
installation
DANGER!
Several people are required to install the
unit. Do not underestimate the weight of the
unit.
NOTICE.
The heat source can be connected either on
the left or right side of the unit. Maintain the
required clearance between the connection
side and the wall.
“Installation of the hydraulic connections”,“Connec-
tion of module box to the heat source” section.
Always comply with required clearance dimensions.
“Dimensional drawings” and “Clearance dimensi-
ons” overviews.
Proceed as follows at the installation location:
Set unit on a solid and level, preferably sound-insu-
lated surface.
Mount feet.
CAUTION.
Moving the unit without the feet mounted
can damage the oor.
Mount the feet before installing the module
box in the unit.
Proceed as follows to mount the feet on the unit:
•
Tip the unit slowly and carefully to one side.
Secure unit in raised position so that it cannot acci-
dentally tip back into the original position.
CAUTION!
Hands and ngers could be crushed during
the following tasks!
•
Mount one foot each on the front and back of the
unit.
1 Foot
2 Lock nut
3 Adjusting screw
•
Slowly and carefully tip the unit back into the origi-
nal position.
•
Repeat procedure on the other side of the unit.
Place unit at final installation location. Compen-
sate for minor unevenness using the four adjusting
screws.Then tighten the lock nuts.

12 We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
installation of the module box
The entire cooling circuit of the heat station is contained in
the module box.
CAUTION.
Do not tilt the module box more than a ma-
ximum of 45° (in any direction).
Place module box in front of the unit.
1 Unit
2 Plug for electrical connection
3 Front edge of bottom of unit
4 Module box
Use straps to lift module box and initially place in
unit so that the rubber feet of the module box that
are facing the unit come to rest on the centering
plate behind the front edger of the bottom of the
unit.
Push module box into the unit until the front rubber
foot of the module box contacts the front edge of
the bottom of the unit and has to be lifted over it.
When pushing in the box, make sure that the plugs
for the electrical connection are not pinched and
damaged.
Raise module box, push it further into the unit and
lower the box as soon as the rubber feet contact
the corresponding stops of the centering plate.
Set the front left rubber foot of the module box
between the guide elements.
The module box is positioned correctly in the unit when the
rubber feed are placed as shown in the following sketch:
WZS 60…:
1 Stops on centering plate
2 Rear rubber feet of module box
3 Centering plate for module
box on bottom of unit
4 Front rubber foot of module box
5 Guide element
WZS 80… and WZS 100…:
1 Stops on centering plate
2 Rear rubber feet of module box
3 Centering plate for module
box on bottom of unit
4 Front rubber feet of module box
5 Guide element

13
We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
installation of the hydraulic connections
CAUTION.
The heat source system must be designed
according to the specications of the heat
pump guide.
Heat pump guide and “Hydraulic connection”
instructions.
NOTICE.
Check to make sure that the diameters and
lengths of the pipes for the heating circuit
and the heat source are sufciently dimensi-
oned.The free compression of the circulating
pumps must be able to deliver at least the
minimum ow rate required for your model.
Overview “Technical data/scope of delivery”, “Heat
source” and “Heating circuit” sections.
DANGER!
Danger of fatal injury due to electric current!
Disconnect unit from power supply if it is
connected to the power supply!
Proceed as follows:
Install shut-off devices at the heating circuit.
Install shut-off devices at the heat source.
NOTICE.
During installation of the shut-off devices, the
evaporator and liqueer of the heat pump
can be rinsed, if necessary.
CAUTION!
The condenser may be rinsed only by custo-
mer service personnel authorized by the ma-
nufacturer.
CAUTION.
During connection of components, secure
connections on the module box and on the
compact unit against twisting in order to
prevent damage to the copper pipes in the
inside of the module box and the compact
unit.
CAUTION.
Once the module box has been placed in the
unit, it can no longer be transported.

14 We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
Screw angle ball valves of the vibration decouplers
to the heating circuit connections.
Heating circuit outflow (forward
flow) connection
Heating circuit inflow (return
flow) connection for models
without cooling function.
Heating circuit inflow (return
flow) connection for models
with cooling function.
NOTICE.
Always note which is the inow (return ow)
and outow (forward ow) of the heating cir-
cuit.They are marked with colors, as are the
vibration decouplers:
red = hot water outow (forward ow)
blue = hot water inow (return ow)
Place a bleeder at the highest point of the heat
source in the heat source outflow.
If necessary, place a bleeder at the highest point of
the heat source in the heat source inflow.
Place a bleeder at the highest point of the hea-
ting circuit in the heating circuit outflow (forward
flow).
If necessary, place a bleeder at the highest point
of the heating circuit in the heating circuit inflow
(return flow).
We recommend installing a contamination filter
(screen size 0.9 mm) on the heat source inflow
connection.
connections on the module box
1 Heat source inflow
2 Heat source outflow
3 Electric/sensor lines
4 Heating circuit outflow (forward flow)
5 Heating circuit inflow (return flow)
connecting the module box to the heating circuit
The vibration decouplers for the connection of the heating cir-
cuit to the module box are pre-mounted in the unit.They are lo-
cated to the right of the module box after it has been inserted.
Proceed as follows:
Remove two seals from the extra box and place
them in the angle ball valves.

15
We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
connecting the module box to the heat source
Vibration decouplers are included for the connection to the
pipes of the heat source.They must be installed in order to
prevent damage from vibrations to the pipes. The pipes of
the heat source can be connected either on the right or left
side of the unit.
1 Connection on left side of unit
2 Connection on right side of unit
Proceed as follows:
Cut out round plates on the desired connection
side.
Make sure that no metal burrs remain. Cut foam
with a knife.
Insert included plastic rosettes in the holes.
Insert vibration decouplers in unit from outside and
guide them inside the unit to the connections on
the module box.

16 We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
connection of the vibration decouplers on
a unit with cooling function
Arrange vibration decouplers in a quarter circle in
the unit.
Example of hose installation for connection on right
side of unit (top view):
1 Heat source inflow
2 Heat source outflow
3 Connecting pipe to and from cooling
function for heat source inflow
Example of hose installation for connection on left
side of unit (top view):
1 Heat source inflow
2 Heat source outflow
3 Connecting pipe to and from
cooling function for heat source
inflow, pre-mounted in unit
1 Connection of heat source
inflow to cooling function (not
insulated at time of delivery)
2 Connection of heat source inflow
from cooling function to module box
(not insulated at time of delivery)
connection of the vibration decouplers on
a unit without cooling function
Arrange vibration decouplers in a quarter circle in
the unit to the connections on the module box.
Example of hose installation for connection on right
side of unit (top view):
1 Heat source inflow
2 Heat source outflow
Example of hose installation for connection on left
side of unit (top view):
1 Heat source inflow
2 Heat source outflow
Screw included angle ball valves to vibration de-
couplers. Use seals from the extra box.
Screw angle ball valves to the connections provided
on the module box. Use seals from the extra box.
CAUTION.
When tightening the connections on the
module box, always secure connections
against twisting.

17
We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
connecting the compact unit to the heating
circuit
The connections for the pipes of the heating circuit and the
hot water supply are located on the top of the unit.
1 Heating circuit inflow (return flow)
2 Connection for heating
circuit safety component
3 External current anode
(under plastic cap)
4 Hot water connection, warm
5 Hot water connection, cold
6 Heating circuit outflow (forward flow)
Bleeding valves have to be installed above the heat station for
connection of the heating circuit and the hot water supply.
Connect hot water tank according to DIN 1988 and
DIN 4753, Part 1 (or the local applicable standards and
directives).
Do not exceed the operating pressures specified on the
rating plate. Install a pressure reducer, if necessary.
Screw vibration decoupler (with elbow) of heat
source inflow to provided connecting pipe. Use
seals from the extra box.
1 Vibration decoupler without elbow
2 Vibration decoupler with elbow
Screw included angle ball valve to vibration decoup-
ler (without elbow) of heat source outflow. Use
seals from the extra box.
Screw angle ball valve to the connection for the
heat source outflow on the module box. Use seals
from the extra box.
CAUTION.
When tightening the connections on the
module box and the connecting pipe, always
secure connections against twisting.

18 We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
opening the angle ball valves on the module box
Open all angle ball valves on the module box by turning
them 90° counter-clockwise.
safety component
The safety component for the heating circuit is in the extra
box.
Mount the safety component on the connection provided
on the top of the unit.
expansion vessels
The expansion vessel of the heat source is included in deli-
very and must be installed with the connection assembly.
The expansion vessel for the heating circuit, the correspon-
ding cap valve and the wall mount are included in the scope
of delivery. They must be integrated in the heating circuit
on-site in compliance with the applicable standards and di-
rectives.
We recommend installing a suitable expansion vessel (not
included in delivery) in the hot water circuit.This equalizes
pressure fluctuations or water shocks in the cold water net-
work and prevents unnecessary loss of water.

19
We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
Watch out for retaining nose. Plugs must be
mounted for easy movement.
Open electrical switch cabinet of unit.
To do this, only loosen the two upper screws of the
cover plate. Remove the remaining screws. Now the
cover plate can be removed.
Insert load lines and external control and sensor
wires in unit through holes at top for electric/
sensor wires. Guide wires via the cable duct to the
terminals.Tighten strain relief screws.
Install electrical connections according to the ter-
minal diagram and the circuit diagrams.
“Terminal diagram” and “Circuit diagrams”.
DANGER!
Install electric connections only according
to the terminal diagram and the circuit dia-
grams that apply to your 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 3 mm contact gap.
Note the level of the release current.
Overview “Technical data/scope of delivery”,
“Electric” section.
Electrical connections
Observe the following when performing all work:
DANGER!
Danger of fatal injury due to electric current!
Electrical connections may be installed only
by qualied electricians.
DANGER!
Observe the relevant EN,VDE and/or appli-
cable local safety regulations during the in-
stallation and during all electrical work.
Comply with technical connection require-
ments of the responsible power supply com-
pany (if required by the latter)!
Remove front panel of unit, if necessary.
Transport to installation location.
Obtain overview of the interior of the unit.
1 Ducts for electric/sensor cables
with strain relief screws
2 Electrical switch cabinet
3 Intermediate floor of unit
Connect connecting plug of module box.
CAUTION.
Insert all three connecting plugs of the
module box in the plug-in connections on the
bottom of the intermediate oor of the unit.

20 We reserve the right to modify technical specifications without prior notice.
UK830301/170306 © Alpha-InnoTec GmbH
1 Connection for control unit
2 Connection for output
compressor 3PE
3 Connection for additional
heating 3NPE
4 N/PE
5 Only for units with cooling function:
3 additional terminals for room
thermostat and dew point sensor
6 Contactor for heating element
NOTICE.
Electric heating element is connected for
6 kW at factory. It can be connected for 2 or
4 kW on the contactor.
For further information, see the adhesive label on
the electric heating element.
1 Adhesive label on electric
heating element
After completion of all electrical installation work,
close the switch cabinet inside the unit.
Close the front panel of the unit if no further instal-
lation work inside the unit is to be performed im-
mediately.