IDEAL Response FF80, Установка и обслуживание, Страница: 40 / 64

40 Response FF80
- Installation
SERVICING
SER
VICING
63 GAS CONTROL VALVE REPLACEMENT
Refer to Frame 55.
1. Remove the front and sealing panels. Refer
to Frame 48.
2. Remove the casing bottom panel.
3. Remove the control panel. Disconnect the
electrical leads (noting their position for
refitting) and place panel safely to one side.
4. Remove the fan unit. Refer to Frame 49.
5. Disconnect the burner skin pressure
sensing pipe at the burner base. Refer to
Frame 50.
6. Remove the pressure gauge sub panel.
7. Undo the 2 retaining screws and unplug the
electrical leads from the gas valve.
8. Undo the gas cock union connection.
9. Undo the 2 extended nuts retaining
the gas injection pipe and withdraw
the pipe, taking care not to lose the
'O' ring seal. Undo the third nut and
the gas outlet manifold block.
10. Supporting the valve, undo the 4
retaining screws and withdraw the
gas valve, leaving the plate with
the 3 studs in place.
11. Transfer the gas cock union and
elbow assembly to the new gas
valve, reusing the 4 M5 x 10
screws, together with the new 'O'
ring seal provided.