Cannon CANTERBURY Instruction Manual - page 16
SERVICE INSTRUCTIONS (DO NOT MODIFY THIS APPLIANCE)
To Replace The Burner And Spark/Sense Electrodes
1.
page 13.
2. Remove the burner chamber front panel, 4 screws.
3. Disconnect the 16mm nut at the inlet of the injector.
4. Disconnect the spark and sense electrodes from the
ignition module.
5. Remove the 2 M5 wing nuts from under the burner.
Lift the burner assembly upwards and carefully
remove from the burner chamber. Refer to FIG 24.
6. Replace in reverse order, checking correct location
of spark/sense electrodes. Refer to FIG 25. Spark
gap between electrode and spark plate is 6 - 8 mm.
Flame sense electrode MUST be in constant flame.
Check for gas tightness. For log placement, refer to
page 13 of this manual.
To Replace The Fan Pressure Switch
1. Remove the lower pedestal front by unscrewing four
screws, 2 either side.
2. Remove the screw retaining the bracket mounting
the electronic controller. Move the bracket and
controls to the front of the heater.
3. Remove the connecting wiring from the pressure
switch.
4. Remove the silicone tubes from the pressure
switch.
Remove the logs from the burner chamber. Refer to
5. The pressure switch is secured onto the rear of the
fan chamber housing by two M5 screws. Remove
the screws.
6. Replace the pressure switch. For wiring, one wire
to “C”(Common) and the other to connect to “NO”
(Normally Open). Polarity is not important.
7. Re-attach silicone tubes making sure that the
black tube attaches to the black side of the
pressure switch. Make sure that the tubes are not
pinched or kinked.
8. Test operation of fan pressure switch - turn heater
on low heat. If heater fails to light even when fan is
spinning, refer to the fault codes on page 18 & 19.
To Replace The Room Circulation Fan
1. Remove the lower pedestal front by unscrewing four
screws, 2 either side.
2. Disconnect the fan plug from the plug carrier.
Remove the two M5 wing nuts which locate the fan
to the fan chamber underside. Lower the fan from
the male thread.
3. Disconnect the silicon tubes from the fan pressure
switch, rotate the fan scroll 90
4. Remove the venturi and bracket from the original
fan. Insert and secure the venturi and bracket on the
replacement fan.
Note: “TOP” should point to air outlet of fan.
5. Insert fan into chamber ensuring that the venturi is
not disturbed. Replace silicon tubes onto the venturi
and locate fan onto male thread. Secure with M5
wing nuts, ensuring rubber buffer locates over
thread. Refer to FIG 26.
6. Replace silicone tubes onto fan pressure switch
ensuring that the black tube is connected to the
black side of the pressure switch. Check to make
sure that the tubes are not kinked or pinche.
7. Reconnect fan plug into plug carrier. Test operation
of room circulation fan and fan pressure switch. If
heater fails to light even when fan is spinning, refer
to fault codes on page 18 & 19.
˚ and remove the
silicon tubes from the venturi located in the fan scroll.
Remove fan from fan chamber.
FIG 26
Room Fan
Clear Silicon
Black Silicon Tube
Tube
16 | Cannon Canterbury Freestanding
Flame Sense
Electrode
FIG 25
FIG 24
Securing the burner bed
Spark Electrode
Spark Plate