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M
ANUAL
S
ERVICE
Version: 1.0 (21-09-2005)
57
8.8
Venting the heat exchanger
The vent valve
1
is above the CH connections. The
CC H1/C2 has two vent valves.
8.9
Draining the heat exchanger
The heat exchanger can be completely drained.
1. Recirculation units: Remove the main cover and the drip
tray (see section 8.4).
Ventilation units: Remove the main cover (see section 8.5).
2. Open the drain plug
1
of collector
2
.
The CC H1/C2 has two drains.
Caution:
c
After refilling the system, check the sealing of the drain
plug.
8.10
Setting the unit code
After replacing the PCB, you must enter the unit code. The
unit code depends on the unit type and is indicated on the
type plate.
Caution:
c
Entering the unit code can be done only if one unit is con-
nected to the controller. If necessary, connect the control-
ler separately to the unit concerned.
1
1
2