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7.10
Removal of burner (fi g. 30)
• Isolate gas and electricity supplies
• Remove outer case (two screws bottom rear
corners)
• Remove room sealed cover
• Disconnect ignition and fl ame rectifi cation
leads "A"
• undo gas rail union "B"
• Undo two screws securing the burner assembly
to the boiler combustion chamber "D"
• Withdraw the burner assembly
7.11
n e or (fi g. 30)
•
roceed as .0
• Remove fi ing screw " " on both
sides o gas mani old
• Remove gas mani old
• Unscrew and remove in ectors
•
lear or change in ectors
7.1
Removal of fan (fi g. 31)
• Isolate gas and electricity supplies
• Remove outer case (two screws bottom rear
corners)
• Remove room sealed cover
• Disconnect an electrical leads "A"and note
positions
• Disconnect air pressure tubes rom air pressure
switch "B"
note positions
• Undo two screws securing an assembly " "
• Remove an rom boiler
•
wap mounting plate over to new an
in reverse order
7.1
m
ermo a or over ea
u off
ermo a (fi g. 31)
• Isolate electricity
• Remove outer case (two screws bottom rear
corners)
• Remove room sealed cover
• Identi y the location o thermostat rom fi g. 31
•
ull out thermostat rom tube with its spring
• Remove electrical connections rom thermostat
• Remove spring rom thermostat
Replace in reverse order
A
ver ea
u off
ermo a
replace
Fig. 30
m
A
Fig. 31
ermo a
29
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