Conventional Flue Instructions

34
Gasket
7.6 Disconnect all the above components and withdraw the
gasket. If it is damaged, replace with a new item. Always
replace the gasket first when reassembling the pilot
components.
7b. Medium
The pilot assembly consists of four components which can
be individually changed:
Pilot burner bracket
Electrode
Pilot injector
Thermocouple
25
Electrode
Thermocouple
Pilot Injector
Pilot Burner
Bracket
Ignition Lead
Pilot Pipe
Screw
Screw
7.7 Turn the gas supply off at the isolation device, remove the
door and place to one side, carefully remove the ceramic
fuel bed components.
Pilot Burner Bracket
To remove the Pilot Burner Bracket:
7.8 First remove the electrode, pilot pipe and thermocouple
as described in the following sections.
7.9 Remove the 2 screws securing the bracket. The pilot burner
bracket can now be removed.
7.10 Replace in reverse order.
Electrode
7.11 Pull the ignition lead off the electrode and undo the retaining
nut, see Diagram 25.
7.12 Replace with a new electrode. Do not overtighten the nut;
this could break the component.
7.13 Replace the ignition lead by pushing the spade connector
onto the terminal (electrode).
Pilot Injector
7.14 Undo the pilot pipe from the gas valve and from the
underside of the pilot burner, see Diagram 25.
7.15 Remove the pipe and the injector drops out from the burner.
Servicing Instructions - Replacing Parts
Thermocouple
7.16 Disconnect the thermocouple from the gas valve/interrupter.
7.17 Remove the 2 interrupter leads.
7.18 Undo the thermocouple nut in the back of the pilot bracket
half a turn. This releases the thermocouple.
7.19 When replacing with a new thermocouple, take care to bend
the new component to the same shape as the thermocouple
just removed.
7.20 To refit the thermocouple into the pilot bracket, ensure it is
pushed fully into the hole. There is a stop on the
thermocouple to set the height.
7.21 Lock the retaining nut just enough to grip the thermocouple.
7.22 Connect the thermocouple to the valve/interrupter taking
care not to overtighten.
8. Ignition Lead
8.1 Follow the Pilot Unit instruction to access the back of the
pilot assembly.
8.2 Disconnect the ignition lead from the electrode.
8.3 Remove the front cover from the control valve by removing
the retaining screw, see Diagram 26 and gently levering
clear with flat bladed screwdriver, see Diagram 27.
NOTE: There is a small cylindrical metal spacer inside
the cover, this must be kept and replaced on the fixing
screw on re-assembly
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