14 Replacement of Parts
14.6 Fan
For access, refer to section 14.1.
Refer to section 12.5 for removal of the fan, gas valve and
burner assembly.
Remove the gas valve as described in the relevant parts of
section 14.5.
Remove the venturi plate secured with three screws, see
diagram 14.2, and remove the two screws securing the fan to
the gas manifold.
Check the gasket and replace if necessary.
NOTE: The 30hxi and 38hxi fan is secured through an
extension piece with two securing screws, check and replace
any seals or gaskets if necessary.
After assembly test for gas tightness and purge in
accordance with the current issue of BS6891or in IE, the
current edition of I.S.813 “Domestic Gas Installations”.
14.7 Burner
For access, refer to section 14.1.
Refer to section 12.5 for removal of the fan, gas valve and
burner assembly.
Refer to section 12.5 for removal of the burner module.
Remove the four screws that secure the burner, see diagram
12.8.
NOTE: The burner will require a new gasket when refitted.
14.8 Front Insulation
For access, refer to section 14.1.
Refer to section 12.5 for removal of the fan, gas valve and
burner assembly.
Refer to section 12.5 for removal of the burner module.
Remove spark electrode, see section 12.4.
Remove burner as described in section 14.7, refer to diagram
12.8.
NOTE: The burner will require a new gasket when refitted.
14.9 Rear Insulation
For access, refer to section 14.1.
Refer to section 12.5 for removal of the fan, gas valve and
burner assembly.
Refer to section 12.5 for removal of the burner module.
Remove securing screw and washer in the centre of the
insulation and withdraw insulation, see diagram 14.4.
14.10 Viewing Window
For access, refer to section 14.1.
Refer to diagram 14.5.
Remove circlip.
Remove steel washer.
Remove glass.
Remove fibre washer.
Replace in reverse order.
Diagram 14.3
13238
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