Weishaupt WWP LA 60-A R User manual

manual
Installation and operating instructions
Weishaupt
Air-to-water heat pump for outdoor installation WWP LA 60-A R 83321302 03/2021

Installation and operating instructions
WWP LA 60-A R
452163.66.99 · 03/2021 · Rei 18332132
Table of contents
1 Safety notes ..................................................................................................................................... 2
1.1 Symbols and markings .............................................................................................. 2
1.2 Intended use ................................................................................................................ 2
1.3 Legal regulations and directives.............................................................................. 2
1.4 Energy-efficient use of the heat pump................................................................... 3
2 Intended use of the heat pump ............................................................................................. 4
2.1 Area of application...................................................................................................... 4
2.2 Operating principle..................................................................................................... 4
3 Scope of supply ............................................................................................................................. 5
3.1 Basic device.................................................................................................................5
3.2 Switch box.................................................................................................................... 5
3.3 Heat pump manager .................................................................................................. 6
4 Accessories ...................................................................................................................................... 7
4.1 External 4-way reversing valve................................................................................. 7
5 Transport............................................................................................................................................ 8
6 Installation......................................................................................................................................... 9
6.1 General information.................................................................................................... 9
6.2 Condensate pipe ......................................................................................................10
7 Installation.......................................................................................................................................11
7.1 General information..................................................................................................11
7.2 Connection on heating side ...................................................................................11
7.3 Electrical connection................................................................................................13
8 Commissioning.............................................................................................................................14
8.1 General information..................................................................................................14
8.2 Preparation.................................................................................................................14
8.3 Procedure...................................................................................................................14
9 Cleaning/maintenance .............................................................................................................15
9.1 Care .............................................................................................................................15
9.2 Cleaning the heating system..................................................................................15
9.3 Cleaning the air system...........................................................................................16
10 Faults/troubleshooting.............................................................................................................17
11 Decommissioning/disposal...................................................................................................18
12 Device information......................................................................................................................19
13 Dimension drawings ..................................................................................................................21
13.1 Dimension drawing...................................................................................................21
14 Diagrams..........................................................................................................................................22
14.1 Characteristic curve, heating .................................................................................22
14.2 Characteristic curve, cooling .................................................................................23
14.3 Operating limits diagram, heating .........................................................................24
14.4 Operating limits diagram, cooling .........................................................................25
15 Integration diagrams .................................................................................................................26
15.1 Sample system diagram..........................................................................................26
15.2 Circuit diagram..........................................................................................................27
15.3 Circuit diagram, extension module .......................................................................28

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Installation and operating instructions
WWP LA 60-A R
1 Safety notes
1 Safety notes
1.1 Symbols and markings
Particularly important information in these instructions is marked with
CAUTION! and NOTE.
ACHTUNGCAUTION
Immediate danger to life or danger of severe personal injury or significant damage to
property.
Note
Risk of damage to property or minor personal injury or important information with no
further risk of personal injury or damage to property.
1.2 Intended use
This device is only intended for use as specified by the manufacturer. Any other use
beyond that intended by the manufacturer is considered improper use. This requires
the user to abide by the relevant project planning documents. Please refrain from
tampering with or altering the device.
1.3 Legal regulations and directives
This heat pump is designed for use in a domestic environment according to Article 1,
Paragraph 2 k) of EU directive 2006/42/EC (Machinery Directive) and is thus subject
to the requirements of EU directive 2014/35/EU (Low Voltage Directive). It is thus also
intended for use by non-professionals for heating shops, offices and other similar
working environments, agricultural establishments and hotels, guest houses and other
residential buildings.
The construction and design of the heat pump complies with all relevant EU directives,
and DIN/VDE regulations (see CE declaration of conformity).
When connecting the heat pump to the power supply, the relevant VDE, EN and IEC
standards are to be adhered to. Any further connection requirements stipulated by
local utility companies must also be observed.
When connecting the heating system, all applicable regulations must also be adhered
to.
This device can be used by children aged 8 and over and by persons with limited
physical, sensory or mental aptitude or lack of experience and/or knowledge, providing
they are supervised or have been instructed in safe use of the device and understand
the associated potential dangers.
Children must not play with the device. Cleaning and user maintenance must not be
carried out by children without supervision.
ACHTUNGCAUTION
When operating or maintaining a heat pump, the legal requirements of the country
where the heat pump is operated apply. Depending on the refrigerant fill quantity, the
heat pump must be inspected for leaks at regular intervals by a certified technician, and
these inspections must be recorded.
More information can be found in the accompanying log book.

Installation and operating instructions
WWP LA 60-A R
1 Safety notes
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1.4 Energy-efficient use of the heat pump
By operating this heat pump, you are helping to protect the environment. A prerequisite
for energy-efficient operation is the correct design of the heat source system and
heating system.
To maintain heat pump efficiency, it is particularly important to keep the temperature
difference between the heating water and heat source to a minimum. For this reason, it
is advisable to design the heat source and heating system very carefully. A
temperature difference that is higher by 1 Kelvin (1°C) increases the power
consumption by around 2.5%. When designing the heating system, it should be
borne in mind that special consumers such as domestic hot water preparation should
also be taken into consideration and dimensioned for low temperatures. Underfloor
heating systems (panel heating) are optimally suited for heat pump use on account
of the low flow temperatures (30 °C to 40 °C).
It is important to ensure that the heat exchangers are not contaminated during
operation, as this increases the temperature difference, which in turn reduces the
coefficient of performance (COP).
When set correctly, the heat pump manager is also an essential factor in the energy-
efficient use of the heat pump. Further information can be found in the heat pump
manager operating instructions.

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Installation and operating instructions
WWP LA 60-A R
2 Intended use of the heat pump
2 Intended use of the heat pump
2.1 Area of application
The air-to-water heat pump is to be used exclusively for the heating and cooling of
heating water. It can be used in new or existing heating systems.
The heat pump is suitable for mono energy and bivalent operation in outside air
temperatures to -22 °C.
Proper defrosting of the evaporator is guaranteed by maintaining a heating water return
temperature of more than 22 °C during continuous operation.
The heat pump is not designed for the increased heat consumption required when a
building is being dried out. For this reason, the additional heat consumption should be
met using special devices on-site. For drying out a building in autumn or winter, it is
advisable to install a suitable 2nd heat generator (e.g. an electric heating element
available as an accessory).
In cooling operation, the heat pump is suitable for air temperatures ranging from
+10°Cto+45°C.
It can be used for silent and dynamic cooling. The minimum water temperature is
+7 °C.
Note
The device is not suitable for operation with a frequency converter.
2.2 Operating principle
Heating
Surrounding air is drawn in by the fan and fed through the evaporator (heat exchanger).
The evaporator cools the air, i.e. extracts heat from it. This extracted heat is then
transferred to the working medium (refrigerant) in the evaporator.
The heat is "pumped" to a higher temperature level by increasing its pressure with the
aid of the electrically driven compressors. It is then transferred to the heating water via
the liquefier (heat exchanger).
Electrical energy is used to raise the temperature level of the heat from the
environment. Since the energy extracted from the air is transferred to the heating water,
this type of device is referred to as an air-to-water heat pump.
The air-to-water heat pump consists of the main components evaporator, fan and
expansion valve, as well as the low-noise compressors, the liquefier and the electrical
control system.
At low ambient temperatures, humidity accumulates on the evaporator in the form of
frost, reducing the transfer of heat. Uneven accumulation during this process does not
indicate a fault. The evaporator is defrosted automatically by the heat pump as
required. Under certain atmospheric conditions, steam may be emitted from the air
outlet.
Cooling
The functions of the evaporator and the liquefier are reversed in the "Cooling"
operating mode.
The heating water transfers its heat to the refrigerant via the liquefier, which is now
functioning as an evaporator. The refrigerant is brought to a higher temperature level
using the compressor. Heat is transferred to the surrounding air via the liquefier (which,
in heating operation, functions as an evaporator).

Installation and operating instructions
WWP LA 60-A R
3 Scope of supply
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3 Scope of supply
3.1 Basic device
The heat pump contains the components listed below.
The refrigeration circuit is "hermetically sealed" and contains the fluorinated refrigerant
R407C incorporated in the Kyoto protocol. Information on the GWP value and CO2
equivalent of the refrigerant is available under “Device information”. The refrigerant is
CFC-free, non-ozone depleting and non-combustible.
1. Evaporator
2. Liquefier
3. Fan
4. Switch box
5. Compressor 1
6. Compressor 2
7. Filter dryer
8. Expansion valve
9. Internal heat exchanger
10. Collector
11. Dirt trap
3.2 Switch box
The switch box is located in the heat pump. The switch box can be pulled out after
removing the lower front cover and loosening the upper left-hand fastening screw.
The switch box contains the power supply terminals as well as the power contactors
and the soft starter units.
29
1
3
45
6
7
8
10
10
1111

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Installation and operating instructions
WWP LA 60-A R
3 Scope of supply
3.3 Heat pump manager
The heat pump manager included in the scope of supply must be used to operate the
air-to-water heat pump.
The heat pump manager is a convenient electronic regulation and control device. It
controls and monitors the entire heating system based on the outside temperature, as
well as domestic hot water preparation and safety systems.
The outside temperature sensor to be mounted on-site incl. fixing materials is included
with the heat pump and heat pump manager unit.
The functions and usage of the heat pump manager are described in the operating
instructions supplied with it.

Installation and operating instructions
WWP LA 60-A R
4 Accessories
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4 Accessories
4.1 External 4-way reversing valve
The external 4-way reversing valve (Y12) enables optimised heating and cooling
operation of the reversible air-to-water heat pump. Switching the direction of flow
ensures an optimal flow through the heat exchanger in the heat pump in heating
operation as well as in the opposite direction in cooling operation. The actuator, driven
by an electrical motor and required for automatic switching, is controlled by the heat
pump manager. (Max. permissible switching current 2A).
The external 4-way reversing valve with an actuating time of max. 30 seconds ensures
switching of the water flow over the complete temperature operating range without any
mixing losses.
The installation of the 4-way reversing valve, available as an accessory, is required to
reach the heating and cooling capacity and coefficient of performance (COP)
mentioned in the device information. The specified operating limits are only fulfilled in
combination with this accessory. A detailed installation description can be found in the
instructions included with the valve.
Note
For operation of the heat pump with the external 4-way reversing valve, it is essential to
set up the hydraulic connections according to the instructions included with the valve.
These instructions describe the procedure for setting up the correct hydraulics in more
detail. The alternating direction of flow in the heating and cooling operation is to be
checked as part of commissioning.
The hydraulic diagram in the appendix shows the basic design.

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Installation and operating instructions
WWP LA 60-A R
5 Transport
5 Transport
ACHTUNGCAUTION
When transporting the heat pump, ensure that it is not tilted by more than 45° (in any
direction).
A pallet should be used for transportation to the final installation location. The basic
device can be transported with a lift truck or a crane.
After the crane transport, the transport eyebolts must be removed and the openings
closed with the vent plugs supplied.
After transportation, the transport fastening in the device is to be removed from both
sides of the base.
ACHTUNGCAUTION
Before commissioning, the transport fastening must be removed.
Transportsicherung
entfernen/einschrauben (4x)
Removing/screwing in
transport fastening (4x)

Installation and operating instructions
WWP LA 60-A R
6 Installation
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6 Installation
6.1 General information
The device must be installed on a permanently even, smooth and horizontal surface.
The entire frame should be in direct contact with the ground in order to ensure an
adequate soundproof seal, to prevent the water-bearing components from becoming
too cold and to protect the inside of the device from small animals. If this is not the
case, additional insulation measures may be necessary. To prevent small animals from
entering the inside of the device, the connection hole in the base plate must be sealed,
for example. Furthermore, the heat pump should be set up so that the air outlet
direction of the fan is perpendicular to the main wind direction to allow unrestricted
defrosting of the evaporator. The heat pump is fundamentally designed for installation
on even ground. For different conditions (e.g.: fitting on a platform, flat roof, etc.) or
where there is a greater risk of the heat pump tipping over (e.g. due to an exposed
position, high wind exposure, etc.), additional protection against tipping over must be
provided. The responsibility for the heat pump installation lies with the specialist
system construction company. During the installation, local requirements such as
building regulations, the static load of the building, and wind exposure must be
accounted for. It must be possible to carry out maintenance work without hindrance.
This is ensured when observing the distances to solid walls as shown in the figure.
The specified dimensions are valid for stand-alone installation only.
ACHTUNGCAUTION
Do not restrict or block the area around the intake or the air outlet area.
ACHTUNGCAUTION
Observe country-specific building regulations!
ACHTUNGCAUTION
The physical impacts must be observed for installation close to walls. No windows or
doors should be present in the area surrounding the air outlet of the fan.
1,0 m 2 m
≥
0m
0,8m

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Installation and operating instructions
WWP LA 60-A R
6 Installation
ACHTUNGCAUTION
In cases of installation close to walls, there may be more contamination in the intake
and air outlet area due to the air flow. The colder outside air outlet should discharge in
such a way as to not increase the heat losses in heated neighbouring rooms.
ACHTUNGCAUTION
Installation in a hollow or in an inner courtyard is not permitted because cooled air
collects at ground level and is drawn in again by the heat pump during extended
periods of operation.
6.2 Condensate pipe
Condensate that forms during operation must be drained off frost free. To ensure
proper drainage, the heat pump must be mounted horizontally. The condensate pipe
must have a minimum diameter of 50 mm and must be fed into a sewer in such a way
that it is safe from frost. Do not discharge the condensate directly into clarifiers or cess
pits. The aggressive vapours and a condensate pipe laid in an area which is not frost-
free can destroy the evaporator.
ACHTUNGCAUTION
The frost line can vary according to the climatic region. The regulations of the countries
in question must be observed.
Frostgrenze
Kondensatablauf
Heizungsvor- und rücklauf
Elektroleitungen
Wärmepumpe
0,20 m
Steuer u. Lastleitung
Heat pump
Flow and return
Electric wires,
control and mains cable
Condensate drain
Frost line

Installation and operating instructions
WWP LA 60-A R
7 Installation
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7 Installation
7.1 General information
The following connections need to be established on the heat pump:
Heating system flows and returns
Condensate drain
Control cable to the heat pump manager
Power supply
7.2 Connection on heating side
The heating system connections on the heat pump are to be made inside the device.
Refer to the device information for the connection sizes. The connection hoses are
routed out of the device in a downwards direction. An optional pipe kit is available as
an accessory, which can be used to lead the connections out to the side.
A spanner must be used to firmly grip the transitions when connecting the heat pump.
Before connecting the heating water system to the heat pump, the heating system
must be flushed to remove any impurities, residue from sealants etc. Any accumulation
of deposits in the liquefier may cause the heat pump to completely break down.
Once the heat pump has been connected to the heating system, it must be filled,
purged and pressure-tested.
The following points must be observed when filling the system:
Untreated filling water and make-up water must be of drinking water quality
(colourless, clear, free of deposits)
Filling water and make-up water must be pre-filtered (max. pore size 5 µm).
Scale formation in domestic hot water heating systems cannot be avoided, but in
systems with flow temperatures below 60 °C, the problem can be disregarded. With
high-temperature heat pumps and in particular with bivalent systems in the higher
performance range (heat pump + boiler combination), flow temperatures of 60 °C and
more can be achieved. The following standard values should therefore be adhered to
with regard to the filling and make-up water according to VDI 2035, sheet 1: the total
hardness values can be found in the table.
Fig. 7.1: Guideline values for filling and make-up water in accordance with VDI 2035
For systems with an above-average specific system volume of 50 l/kW, VDI 2035
recommends the use of fully demineralised water and a pH stabiliser to minimise the
risk of corrosion in the heat pump and heating system.
ACHTUNGCAUTION
With fully demineralised water, it is important to ensure that the minimum permissible
pH value of 7.5 (minimum permissible value for copper) is complied with. Failure to
comply with this value can result in the heat pump being destroyed.
Overall heat
output in kW
Total
Alkaline earths in
mol/m³ and/or
mmol
Specific system volume
(VDI 2035) in l/kW
< 20 20 < 50 50
Total hardness in dGH
< 50 2.0 16.8 11.2
< 0.111
50 – 200 2.0 11.2 8.4
200 – 600 1.5 8.4 < 0.111
> 600 < 0.02 < 0.111
1. This value lies outside the permissible value for heat exchangers in heat pumps.

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Installation and operating instructions
WWP LA 60-A R
7 Installation
Note:
For operation of the heat pump with the 4-way reversing valve, it is essential to set up
the hydraulic connections according to the instructions included in the scope of supply
of the valve. These instructions describe the procedure for setting up the correct
hydraulics in more detail. Non-observance of this will lead to restrictions in the
operation of the heat pump.
ACHTUNGCAUTION
If the heat pump is only operated in heating operation and without an external 4-way
reversing valve, the hydraulic connections must be established according to the
counterflow principle (see dimension drawing table Fig. 13.1 on page 21). Activation
of the Cooling operating mode is not permissible in this case and must be refrained
from!
Important:
The notes/settings in the instructions of the heat pump manager must always be
observed and carried out accordingly; not doing so will lead to malfunctions.
Minimum heating water flow rate
The minimum heating water flow rate through the heat pump must be assured in all
operating states of the heating system. This can be accomplished, for example, by
installing a hydraulic switch. When the minimum heating water flow rate is undershot,
the plate heat exchanger in the refrigeration circuit can freeze, which can lead to total
loss of the heat pump.
The nominal flow rate is specified depending on the max. flow temperature in the
device information and must be taken into account during planning. With design
temperatures below 30 °C in the flow, the design must be based on the max. volume
flow with 5 K spread for A7/W35.
The specified nominal flow rate (See "Device information" on page 19.) must be
assured in all operating states. An installed flow rate switch is used only for switching
off the heat pump in the event of an unusual and abrupt drop in the heating water flow
rate and not to monitor and safeguard the nominal flow rate.
Frost protection
On heat pump systems where protection from frost cannot be guaranteed, there must
be an option for draining the system (see figure). The frost protection function of the
heat pump manager is active whenever the heat pump manager and the heat
circulating pump are ready for operation. If the heat pump is taken out of operation or
in the event of a power failure, the system must be drained and, if necessary, blown out
at the points shown (see figure). The heating circuit should be operated with a suitable
frost protection if heat pump systems are implemented in buildings where a power
failure cannot be detected (holiday home).
2
1
3

Installation and operating instructions
WWP LA 60-A R
7 Installation
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7.3 Electrical connection
3 lines/cables must be routed to the heat pump in total:
A standard 5-core cable is used to connect the heat pump to the power supply.
The cable must be provided on-site. The conductor cross section is selected in
accordance with the power consumption of the heat pump (see appendix Device
Information) and the applicable VDE (EN) and VNB regulations. An all-pole
disconnecting device with a contact gap of at least 3 mm (e.g. utility company
blocking contactor or power contactor) must be installed in the heat pump power
supply. A 3-pole circuit breaker with joint tripping of all outer conductors (trip
current in accordance with device information) provides the short circuit protection
taking into account the layout of the internal wiring.
The relevant components in the heat pump contain an internal overload protection.
When connecting, ensure that the incoming supply has a clockwise rotating field.
Phase sequence: L1, L2, L3.
ACHTUNGCAUTION
Ensure that there is a clockwise rotating field: With incorrect wiring, starting of the heat
pump is prevented. A corresponding warning is indicated on the display of the heat
pump manager (adjust wiring).
The control voltage is supplied via the heat pump manager.
A 3-pole line must be laid for this in accordance with the electrical documentation.
Further information on the wiring of the heat pump manager is available in the heat
pump manager operating instructions.
A shielded communication line (J-Y(ST)Y ..LG) (not included in the scope of supply)
connects the heat pump manager with the refrigerant circuit controller installed in
the heat pump. More detailed instructions can be found in the heat pump manager
operating instructions and in the electrical documentation.
Note
The communication cable is necessary for the function of air-to-water heat pumps in
outdoor installation. It must be shielded and laid separately from the mains cable.
7.3.1 Demand sensor connection
The demand sensor R2.2 (NTC 10) is included with the heat pump manager. It must
be installed depending on the hydraulics used.
If a demand sensor is not connected, the second heat generator cannot be controlled
with the heat pump manager in the event of an interruption in communication either.
Note
The return sensor R2 installed in the heat pump is active when the compressor is
running and must not be disconnected.

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Installation and operating instructions
WWP LA 60-A R
8 Commissioning
8 Commissioning
8.1 General information
To ensure that commissioning is performed correctly, it should only be carried out by
an after-sales service technician authorised by the manufacturer (Weishaupt
technician). Under certain conditions, this may be associated with an additional
warranty service.
8.2 Preparation
The following items must be checked prior to commissioning:
All of the heat pump connections must be installed as described in chapter 7.
All valves which could impair the proper flow of the heating water in the heating
circuit must be open.
The air intake and air outlet paths must be clear.
The fan must turn in the direction indicated by the arrow.
The settings of the heat pump manager must be adapted to the heating system in
accordance with the operating instructions.
Ensure that the condensate drain functions properly.
8.3 Procedure
The heat pump is commissioned via the heat pump manager. Settings should be made
in compliance with the heat pump manager's instructions.
At heating water temperatures under 7 °C, commissioning is not possible. The water in
the buffer tank must be heated with the 2nd heat generator to at least 22 °C.
To ensure problem-free commissioning, the following procedure is to be implemented:
1. Close all consumer circuits.
2. Ensure that the heat pump has the correct water flow.
3. Use the manager to select the automatic operating mode.
4. In the special functions menu, start the "Commissioning" program.
5. Wait until a return temperature of at least 29 °C has been reached.
6. Now slowly reopen the heating circuit valves in succession so that the heating
water flow rate is constantly raised by slightly opening the respective heating cir-
cuit. The heating water temperature in the buffer tank must not be allowed to drop
below 24 °C during this process. This ensures that the heat pump can be de-
frosted at any time.
7. When all heating circuits are fully open and a return temperature of at least 22 °C
is maintained, the commissioning is complete.
ACHTUNGCAUTION
Operating the heat pump at low system temperatures may cause the heat pump to
break down completely.

Installation and operating instructions
WWP LA 60-A R
9 Cleaning/maintenance
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9 Cleaning/maintenance
9.1 Care
To protect the paintwork, avoid leaning anything against the device or putting objects
on the device. External heat pump parts can be wiped with a damp cloth and
commercially available domestic cleaner.
Note
Never use cleaning agents containing sand, soda, acid or chloride, as these can
damage the surfaces.
To prevent faults due to contamination in the heat exchanger of the heat pump, ensure
that the heat exchanger in the heating system cannot be contaminated. Should
operating malfunctions due to contamination still occur, however, the system should be
cleaned as described below.
9.2 Cleaning the heating system
ACHTUNGCAUTION
The installed dirt traps must be cleaned at regular intervals.
The cleaning intervals should be defined according to the degree of soiling in the
system. The filter insert should also be cleaned.
For cleaning, the heating circuit must be made pressureless in the vicinity of the dirt
trap, the filter compartment unscrewed, and the filter insert removed and cleaned.
Assembly carried out in reverse order requires attention to correct assembly of the
screen inserts and tightness of the screw joints.
The ingress of oxygen into the heating water circuit may result in the formation of
oxidation products (rust), particularly if steel components are used. These enter the
heating system via the valves, the circulating pumps and/or plastic pipes. A diffusion-
resistant installation is therefore essential, especially with regard to the complete
piping.
Note
We recommend the installation of a suitable corrosion protection system to prevent the
formation of deposits (e.g. rust) in the condenser of the heat pump.
Residue from lubricants and sealants may also contaminate the heating water.
In the event of severe contamination leading to a reduction in the performance of the
liquefier in the heat pump, the system must be cleaned by a heating technician.
Based on current information, we recommend using a 5% phosphoric acid solution for
cleaning purposes. However, if cleaning needs to be performed more frequently, a 5%
formic acid solution should be used.
In both cases, the cleaning fluid should be at room temperature. We recommend
flushing the heat exchanger in the direction opposite to the normal flow direction.
To prevent acidic cleaning agents from entering the heating system circuit, we
recommend connecting the flushing device directly to the flow and return of the
liquefier of the heat pump.
It is then important that the system be thoroughly flushed using appropriate neutralising
agents to prevent any damage from being caused by cleaning agent residue remaining
in the system.
Acids must be used with care and the regulations of the employers liability insurance
associations must be adhered to.
The instructions of the cleaning agent manufacturer must always be observed.

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Installation and operating instructions
WWP LA 60-A R
9 Cleaning/maintenance
9.3 Cleaning the air system
The evaporator, fan and condensate drain should be cleaned of contamination (leaves,
twigs, etc.) before each new heating period.
ACHTUNGCAUTION
Before opening the device, ensure that all electric circuits are disconnected from the
power supply.
To prevent the evaporator and the condensate tray from being damaged, do not use
hard or sharp objects when cleaning.
Under extreme weather conditions (e.g. snow drifts), ice formation may occur on the air
intake and air outlet grids. If this happens, the ice and snow must be removed from the
vicinity of the intake and air outlet area by the operator to ensure that the minimum air
flow is maintained.
To ensure proper drainage from the condensate tray, it must be regularly inspected and
cleaned, if necessary.
All panelling can be removed to allow access to the inside of the device.
The two sash fasteners must be opened for this purpose. The cover must then be
slightly tilted forward and lifted off toward the top.
The upper panels are hooked into the cover panel. To dismantle, undo the two screws
and unhook the panels by pulling them back.
Opening the lower covers Closing the lower covers
Opening the upper cover panels Closing the upper cover panels
3.
1.
1.
2.
2.
1.
3.
3.
2.
2.
2.
1.
1.
3.
3.
2.
2.
3.
3.
1.
1.
2.

Installation and operating instructions
WWP LA 60-A R
10 Faults/troubleshooting
452163.66.99 · 03/2021 · Rei 17 83321302
10 Faults/troubleshooting
This heat pump is a quality product and is designed for trouble-free operation. In the
event that a fault should occur, it will be indicated on the heat pump manager display.
In this case, consult the "Faults and troubleshooting" page in the operating instructions
of the heat pump manager. If you cannot correct the fault yourself, please contact your
after-sales service technician.
ACHTUNGCAUTION
Before opening the device, ensure that all electric circuits are disconnected from the
power supply.
After switching off the power supply, wait at least 5 minutes to allow the electrically
charged components to discharge.
ACHTUNGCAUTION
Work on the heat pump must only be performed by authorised and qualified after-sales
service technicians!

452163.66.99 · 03/2021 · Rei 18 83321302
Installation and operating instructions
WWP LA 60-A R
11 Decommissioning/disposal
11 Decommissioning/disposal
Before removing the heat pump, disconnect it from the power source and close all
valves. The heat pump must be dismantled by trained personnel. Observe all
environmental requirements regarding the recovery, recycling and disposal of materials
and components in accordance with all applicable standards. Particular attention
should be paid to the proper disposal of refrigerants and refrigeration machine oil.