5Subject to technical amendments without prior notice | 83055800gUK – Translation of the original operating manual | ait-deutschland GmbH
Risk of injury from moving parts
► Only switch on the device when the covers and
fanprotectiongrillearetted.
Injuries and environmental damage due to
refrigerant
Thedevicecontainsammable,harmfulandenviron-
mentally dangerous refrigerant. If refrigerant leaks out
of the device, there is a risk of explosion:
1. Switchothedevice.
2. Notify an authorised after sales service.
3. Keep away from sources of ignition.
2.5 Disposal
Environmentally hazardous media
Improper disposal of environmentally hazardous me-
dia(refrigerant)willdamagetheenvironment:
► Collect media safely.
► Dispose of the media in an environmentally sound
manner in accordance with the local regulations.
2.6 Avoid material damage
The ambient air at the heat pump’s installation site and
the air drawn in as a heat source must not contain any
corrosive components!
Constituents such as
● Ammonia
● Sulphur
● Chlorine
● Salt
● Sewagegases,uegases
can cause damage to the heat pump, which can even
result in the complete failure/total loss of the heat pump.
Decommissioning/draining the heating
If the system/heat pump is decommissioned or drained
after already being lled, it must be ensured that
the condenser and any heat exchangers have been
drained completely in the event of freezing tempera-
tures. Residual water in heat exchangers and con-
densers can result in damage to the components.
► Completely drain the system and the condenser,
and open vent valves.
► Blow them clear with compressed air, if required.
Improper action
Requirements for minimum scale and corrosion dam-
age in hot water heating systems:
● Professional planning and commissioning
● Closed system with regard to corrosion
● Integration of an adequately dimensioned pres-
sure maintenance
● Useofdemineralisedheatingwater(VEwater)or
water corresponding to the VDI 2035 norm
● Regular servicing and maintenance
If a system is not planned, commissioned and operated
in accordance with the given requirements, there is a
risk of the following damage and malfunctions:
● Malfunctions and failure of components, e.g. pumps,
valves
● Internal and external leaks, e.g. at heat exchangers
● Reduction in cross-section and blockages in com-
ponents, e.g. heat exchangers, pipes, pumps
● Material fatigue
● Gas bubbleand gascushiondevelopment(cavi-
tation)
● Negativeeectonheattransfer,e.g.duetoforma-
tion of deposits, and associated noises, e.g. boiling
noises,ownoises
► Observe the information in this operation manual
for all work on and with the device.
Unsuitablequalityofthewaterforllingand
replenishing the heating circuit
Theeciencyofthesystemandtheservicelifeofthe
heat generator and the heating components depend
decisively on the quality of the heating water.
Ifthesystemislledwithuntreateddrinkingwater,cal-
cium deposits will form as scale. Limescale deposits
accumulate on the heat transfer surfaces of the heat-
ing.Eciencyisreducedandenergycostsincrease.In
extreme cases, the heat exchangers will be damaged.
► Fill the system with deionised heating water
(VEwater)orwithwatercorrespondingtotheVDI
2035normonly(low-saltoperationofthesystem).
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