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6
Installation
6.1 General Information
The following connections need to be established on the heat
pump:
Fresh and exhaust air
Flow and return flow of the heating system
Condensate outflow
Control line to the heat pump controller
Power supply
6.2 Air Connection
ATTENTION!
Do not restrict or block the area around the air intake or outlet.
ATTENTION!
Only operate the heat pump with the air ducts connected.
The glass fibre reinforced concrete air ducts offered as accesso-
ries are moisture-resistant and diffusion-free.
The sealing collar is used to seal the air ducts on the heat pump.
The air ducts are not screwed directly onto the heat pump. Only
the rubber seal comes into direct contact with the heat pump
when the system is installed correctly. This guarantees easy as-
sembly and disassembly of the heat pump and also ensures that
solid-borne sound is well insulated.
If another type of air duct is used, observe the external and inter-
nal dimensions as specified in the figure. Also ensure that the vi-
bration and duct insulation are adequate.
If flange-mounted air ducts are used, connecting stubs are se-
cured on the air inlet and air outlet sides of the evaporator with 4
M8 x 16 hexagon bolts in the threaded holes provided. When
doing this, ensure that both air duct stubs only touch the insula-
tion. There should be no contact with the external sheeting.
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6.3 Heating System Connection
The heating system connections on the heat pump have a 1 1/4"
external thread. Use a spanner 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
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.
6.3
E-5
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