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Servicing Instructions - Replacing Parts
11. Gas Valve
To change the gas valve:
11.1 Disconnect the gas inlet pipe.
11.2 Disconnect the gas outlet pipe.
11.3 Disconnect the pilot pipe.
11.4 Disconnect the thermocouple, interrupter leads and
the interrupter block.
Note - make a note of the location in the interrupter
block of the lead with the red tag marking.
11.5 Remove the 2 x M4 nuts securing the valve to the support
bracket and withdraw the valve.
11.6 Disconnect the stepper motor cable plug. Push in the
latching clip on the plug to withdraw, see Diagram 16.
Gas Inlet Supply Pipe
Interrupter Lead Set
(Note position of red
tag lead)
Thermocouple
Connection
Pilot Pipe
Gas Outlet Pipe
Earth Connection
Stepper Plug
Valve Fixings
16
Replace in reverse order ensuring:
11.7 The earth cable ring tag is positioned between the valve
body and the bracket.
11.8 The interrupter leads are connected correctly with the red
tag lead nearest to the gas valve body.
12. Magnetic Safety Valve
To replace the magnetic safety valve:
12.1 Undo the thermocouple from the interrupter block and
remove the two interrupter leads.
12.2 Unscrew the interrupter block from the back of the valve.
12.3 Undo the silver magnetic valve retaining nut on the back
of the valve.
12.4 Gently tap out the mag valve.
12.5 Replace with a new unit.
12.6 Reassemble in reverse order ensuring that the interrupter
leads are connected correctly with the red tag lead nearest
to the gas valve body.
12.7 Check for leaks.
13. Control Box
13.1 Disconnect from the control box:
— Ignition lead
— Interrupter leads
— Earth connection
— 7-way stepper motor plug
— The battery power supply cable
— The touch pad control cable
Refer to Diagram 17 for details.
Ignition lead
Fixing Screw
Earth Connection
Stepper Motor
Harness
Interrupter
Lead Set
Fixing Screw
Touch Pad
Supply Cable
Battery Power
Supply Cable
Remote Handset
Pairing Button
17
13.2 Undo the two screw fixings holding the PCB box, see
Diagram 17. The control box can now be replaced.
13.3 After replacing the control box ensure all cables connections
are refitted, see Diagram 18.
Touch Pad
Supply
Cable
Battery Power
Supply
Touch Pad
Control
Ignition Lead
Stepper Motor Cable
Pilot Pipe
Thermocouple
Earth Lead
Interrupter Leads
18
13.4 Prior to re-connection of the control box to the appliance, if
there is no communication between the remote handset and
31


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