Baxi Combi 130 HE Installation & Servicing Instructions Manual page 42

Air Box Door
Panel
Gaskets
Spark
Electrode
Sensing
Electrode
Spark
Electrode
Leads
Venturi
Fan Protection
Thermostat
(Black Body)
Protection
Thermostat
Leads
42
Fig. 75
Combustion
Box Door
Fig. 76
Injector Pipe
Fan
Wing Nuts
Electrical Supply
Fig. 77
13.0 Changing Components
The fan and venturi, gas valve, injector pipe,
condensate trap, fan protection thermostat,
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 1 / turn screws (Fig. 75).
4
13.20 Spark and Sensing Electrodes
(Fig. 76)
1. Disconnect the leads to the electrodes noting
their positions (left to right):
Spark - Opaque Lead
Spark - Opaque Lead
Sensing - White Lead
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 new gaskets,
reassemble in reverse order, ensuring the spark
gap of 3.5mm ± 0.5mm is maintained.
13.21 Fan and Fan Protection Thermostat
(Fig. 77)
1. Remove the electrical connections to the fan
protection thermostat on the fan.
2. Replacing the thermostat:- Unscrew the
thermostat and replace with the new thermostat.
Reassemble in reverse order.
3. Replacing the fan:- Remove the wing nuts
securing the fan to the base of the combustion
box.
4. Lower the fan and disconnect the electrical
supply from the right hand rear of the fan.
Remove the fan/venturi assembly.
5. Remove the two screws securing the venturi to
the fan and remove the venturi together with the
gasket.
6. Remove the fan protection thermostat and fix it
to the new fan, together with the venturi and
gasket.
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.