PENSOTTI PCH 18 Instruction Manual page 45

Safety thermostat
(see fig. 2)
Disconnect the connecting wire;
Unscrew the fixing screws and remove the thermostat;
Replace the thermostat
components following the above procedure in reverse
order;
Switch on the electricity, water and gas supplies and
restart the appliance.
Heating sensor
(see fig. 2)
Un-Plug the connecting wire;
Replace the sensor and re-assemble the components
following the above procedure in reverse order;
Switch on the electricity, water and gas supplies, open
the shut-off valves and fill the central heating circuit.
Then restart the appliance, remembering to discharge
any air that may be trapped in the system;
Gas valve
(see fig. 3)
Disconnect the joints and remove the gas pipe
connecting the gas valve to the venturi.
Disconnect the gas feed pipe and valve ring-nut at the
bottom of the room-sealed chamber.
Remove the flanged elbow coupling of the existing valve
and fit it to the new valve; also fit a new cork washer.
Replace the gas valve and re-assemble the components
following the above procedure in reverse order.
Replace all the gas seals.
Fully tighten the gas connections.
Switch on the electricity, water and gas supplies and
check for any gas leaks using a soapy solution or leak
detector spray;
MAINTENANCE INSTRUCTIONS
and re-assemble the
41
heating
sensor
Fig. 2
gas valve
Fig. 3
safety
thermostat