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5
Set-up
5.1 General Information
The device should always be installed on a permanently smooth,
even and horizontal surface. The entire frame should lie directly
on the ground to ensure a good soundproof seal and to prevent
the water-bearing components from becoming too cold. If this is
not the case, additional insulation measures may be necessary.
Natural ground, e.g., lawn should be below the air intake and air
outlet vents. It must be possible to carry out maintenance work
without hindrance. This can be ensured by maintaining a clear-
ance of 1.2 m to any fixed walls.
ATTENTION!
Do not restrict or block the area around the air intake or outlet.
5.2 Condensed Water Pipe
Condensed water that forms during operation must be drained
off frost-free. The heat pump must be mounted on a level plane
to guarantee proper drainage. The condensed water pipe must
have a minimum diameter of 50 mm and should be fed frost-free
into a sewer. Condensate should not be discharged directly into
clearing tanks and cesspits because the aggressive vapours
could destroy the evaporator.
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6
Installation
6.1 General Information
The following connections need to be established on the heat
pump:
Flow and return flow of the heating system
Condensate outflow
Control line to the heat pump controller
Power supply
6.2 Heating System Connection
The heating system connections on the heat pump have a 1 1/4"
external thread. Route the connection hoses out of the device in
a downwards direction. Use a spanner to firmly grip the transi-
tions 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
liquifier could cause the heat pump to completely break down.
For systems in which the heating water flow can be shut off via
the radiator or thermostat valves, an overflow valve must be in-
stalled in a heating bypass behind the heat pump by the cus-
tomer. This ensures a minimum heating water flow rate through
the heat pump and helps to avoid faults.
Once the heating system has been installed, it must be filled, de-
aerated and pressure-tested.
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 either a
manifold without differential pressure or an overflow valve. The
procedure for adjusting an overflow valve is described in the
Chapter Start-up.
Antifreeze
A method of manual drainage (see illustration) should be pro-
vided for heat pumps which are exposed to frost. The antifreeze
function of the heat pump controller is active whenever the con-
troller and the heat circulating pump are ready for operation. If
the heat pump is taken out of service or in the event of a power
failure, the system has to be drained, and if required, blown out,
at three locations (see illustration). The heating circuit should be
operated with a suitable antifreeze if heat pump systems are im-
plemented in buildings where a power failure can not be detected
(holiday home).
6.2
E-5
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