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MAINTENANCE INSTRUCTIONS
TR05A153.B1107
56
6.7.4 Safety thermostat
•
Isolate the electricity, water and gas
supplies to the appliance;
•
Disconnect the connecting wire;
•
Unscrew the fixing screws and remove the
thermostat;
•
Replace the thermostat and re-assemble
the components following the above
procedure in reverse order;
6.7.5 Heating sensor
•
Isolate the electricity, water and gas
supplies to the appliance;
•
Unplug the connecting wires;
•
Replace the sensor and reconnect the
wires;
6.7.6 Gas valve
•
Isolate the electricity, water and gas
supplies to the appliance;
•
Disconnect and remove the pipe connecting
the gas valve to the burner;
•
Disconnect the gas feed pipe;
•
Remove the screws securing the gas valve
then remove the valve;
•
Replace the gas valve and reassemble the
components following the above procedure
in reverse order replacing all the gas seals;
•
Fully tighten the gas connections;
•
Switch on the gas supply and check for any
gas leaks using a soapy solution or leak
detector spray;
•
Switch on the electricity and water supplies,
switch on and fire the appliance and repeat
the checks for leaks.
Figure 48: Heating sensors and gas valve
Safety
thermostat
Heating
sensor
Electronic
gas valve
Gas isolation
valve