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The pilot unit can now be removed by undoing the two
screws, Diagram 6
3.2 • Reassemble in reverse order
• Do not overtighten.
NOTE: TAKE CARE NOT TO DISCONNECTTHE SENSOR
WIRES OF THE GAZCO FLUE SURE SYSTEM ON
REPLACING THE THERMOCOUPLE
4.1 • Follow the above Pilot Unit instruction to access the back
of the pilot assembly
• Disconnect the ignition lead from the electrode
• Remove the front cover from the control valve, Diagram
7 and 8
• Disconnect the other end of the ignition lead from the
valve body noting the route of the ignition lead
8
AR0916
7
AR0915
4. IGNITION LEAD AND PIEZO
AR1445
6
• Replace with a new ignition lead following the same
route as the old one
Replace the valve cover and the pilot assembly
4.2 • Check operation of the new ignition lead.
5.1 The piezo assembly used on this appliance is not
serviceable and is unlikely to fail.
6.1 • Turn the gas supply off at the isolation device, referring
to Diagram 9
• Disconnect the 2 x 8mm and 1 x 4mm gas pipe fittings
at the back of the gas valve (A)
• Disconnect the thermocouple, (B)
• Remove the front cover from the control valve, Diagram
10 and 11
.
10
AR0915
9
AR0943
C
C
B
A
A
A
6. GAS VALVE
5. PIEZO
SERVICING INSTRUCTIONS
REPLACING PARTS