iNSTALLATiON
installation
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17
10.6.2 Filling the heating system
f
Fill the heating system via the drain (see chapter "Specifica-
tion / Dimensions and connections").
f
After filling the heating system, check the connections for
leaks.
10.6.3 Venting the heating system
Automatic air vent valve
f
Remove the cover (see chapter "Troubleshooting / Checking
the IWS DIP switch settings").
D
00000
90
34
8
1
1 Air vent valve
The air vent valve is factory-fitted in the open position. The heating
system is ventilated automatically.
Air vent valve on the inverter
D
0000
35
30
6
1
1 Ventilation
f
Vent the pipework by activating the ventilation.
10.7 Condensate drain
A condensate drain connector is factory-fitted to the defrost pan
to enable any condensate to drain off.
26
0
3
01
1
86
8
1
1 Condensate drain
f
Observe chapter "Electrical connection / Ribbon heater".
f
If the appliance is sited on foundations, the condensate drips
freely into the condensate drain pipe.
f
If the appliance is mounted on a bracket or T-support, attach
a condensate hose to the condensate drain.
f
Protect the condensate hose against frost with sufficient
thermal insulation.
!
Material losses
Ensure the condensate hose is not kinked. Route the hose
with a slope.
f
After routing the condensate hose, check that the condensate
can drain correctly.
10.8 External second heat generator
For dual mode systems, always connect the heat pump into the
return of the second heat generator (e.g. oil boiler).
10.9 High limit safety cut-out for area heating
system
!
Material losses
In order to prevent excessively high flow temperatures
in the area heating system causing damage in the event
of a fault, install a high limit safety cut-out to limit the
system temperature.
