Venting The Heat Exchanger; Bleeding The Heat Exchanger - Biddle CA2 Manual

S
ERVICE
1
2
6.7

Venting the heat exchanger

1
6.8

Bleeding the heat exchanger

1
64
For all models
1. Remove the inspection panel (see section 6.2).
2. The discharge section has the following connections to the
electronics module (at 1):
- The valve drive connections on the printed circuit
board (connectors X140 and X210);
- The earth connection.
Disconnect these connections.
2
3. Between the fins of the discharge grille, there are 4 screws
(at 2): Loosen these.
c
Caution:
Support the discharge section while loosening the screws.
4. The discharge section is now detached: Remove it carefully.
For water-heated models only
The air relief valve 1 is located in the upper left of the unit.
For water-heated models only
The drain plug 1 is located on the left of the unit.
C A C
OMFORT IR URTAIN