Baxi 100 He Installation And Servicing Instructions page 32

Air Box Door Panel
Spark
Sensing
Earth
Fig. 56
Cable Tie
Injector Pipe
Screw
Protection
Sensor
Electrical
Connections
Fig. 57
32
H IG
H
LO
W
Combustion
Box Door
Injector
Opening
Gasket
Venturi
Electrical
Wing Nuts Connection
13.0 Changing Components
The fan and venturi, gas valve, injector pipe,
condensate trap, fan protection sensor, spark
and sensing electrodes can be accessed and
changed on the removal of the airbox door
panel.
1. Remove the airbox door panel by loosening the
four
13.8
1. Disconnect the leads from the centre and right
hand terminals (earth and flame sensing probe).
The spark electrode lead is permanently fixed to
the electrode. Undo the re-usable cable tie and
pull down the sleeving to expose the joint in the
electrode lead. Disconnect the lead.
Fig. 55
2. Remove the two screws securing each of the
electrodes to the combustion box door and
remove the electrodes.
3. Fit the new electrodes and reassemble in
reverse order.
NOTE: The spark electrode sleeve should
always cover the joint in the electrode lead to
prevent tracking.
13.9
1. Loosen the screw holding the injector pipe into
the venturi.
2. Remove the electrical connections to the fan
protection sensor on the fan.
3. Remove the wing nuts securing the fan to the
base of the combustion box.
4. Lower the fan and remove.
5. Disconnect the electrical supply from the right
Fan
hand rear of the fan.
6. If changing the fan remove the screws securing
the venturi and fan protection sensor bracket,
noting the positions of the injector opening and
sensor bracket, fix them to the new fan.
7. Fit the new fan and reassemble in reverse
order.
The injector pipe, condensate trap and gas
valve can be changed after the removal of
the fan.
1 / turn screws (Fig. 55).
4
Spark and Sensing Electrodes
(Fig. 56)
Spark - Opaque cable
Earth - Black cable
Sensing - White cable
Fan
(Fig. 57)