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5. ODS PILOT UNIT
Note: The pilot unit on the appliance is a non serviceable unit due
to the complex nature of its manufacture. Replacement of the
complete unit must be carried out if one of the following items
becomes faulty:
Pilot injector
Ignition electrode
Thermocouple
5.1 Carry out operations (a) to (d), Section 4.
5.2 Gently pull the ignition lead off the electrode. See Diagram 5
arrow A.
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5.3 Remove the two screws securing the pilot assembly. See
Diagram 5 arrow B.
5.4 Undo the thermocouple connection at the back of the gas
valve. See Diagram 6 arrow A.
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5.5 Replace with a new pilot assembly. Set the spark gap. See
Diagram 7.
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5.6 After reassembly, check for gas soundness and carry out a
flame failure functional check details in the flow chart,
especially the mag drop out time.
6. GAS VALVE
6.1 Turn the gas supply off at the isolation device.
6.2 Disconnect the 2x8mm and 1x4mm gas pipe fittings at the
back of the gas valve and also disconnect the thermocouple,
see Diagram 8 arrow B.
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6.3 Undo the single screw that secures the left hand side of the
control cover, see Diagram 9.
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SERVICING INSTRUCTIONS
REPLACING PARTS