35
Minimiser - Installation
67
GAS CONTROL VALVE REPLACEMENT
SERVICING
SERVICING
Refer also to Frame 10 - 'Boiler exploded view.'
1. Refer to Frame 58.
2. Remove the casing bottom panel - refer to Frame
59.
3. Remove the control panel.
a. Pull off the thermostat knob.
b. Undo the control box retaining screw - refer to
Frame 59.
c. Supporting the control panel, undo the two
retaining screws and withdraw the panel.
4. Remove the fan unit - refer to Frame 53.
5. Disconnect the burner pressure sensing pipe - refer to
Frame 65, step 4.
a
7. Undo the gas cock union connection.
6. Undo the two retaining screws and unplug the electrical
leads from the gas valve.
9. Supporting the valve, undo the three retaining screws and withdraw
the gas valve, complete with mounting bracket and manifold block.
8. Undo the two extended nuts retaining the gas
injection pipe and withdraw the pipe, taking care
not to lose the O ring seal.
Manifold block
b
c
Inter panel
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