Section 16: Removal and Replacement Parts
Note! Please refer also to the burner supplement supplied with this Manual.
Multi-Block gas valve
1.
Isolate electric and gas.
2.
Remove Din Plugs by using a terminal screwdriver to undo locking screw.
3.
Undo valve flanges with 13mm spanner (up to 500 model), 17mm spanner
(above 500 model). Lift out valve assembly.
4.
Replace and re-assemble in reverse order, taking care that the O rings are in
position.
5.
Check for gas soundness and recommission heater.
Fan and limit stat
1.
Isolate electric supply.
2.
Remove outer casing and disconnect wires. The wires are held in by spring
terminals which will release by pushing a small screwdriver into the slot next
to the wiring termination.
3.
Remove fixing screws, which secure stat to front of panel, carefully withdraw
stat from heater and remove casing.
4.
Re-assemble in reverse order and check settings, adjust if required to fan on
35°, fan off 25°, high limit 90°.
Supply Fan
1.
Isolate electric supply.
2.
Remove front lower access panel.
3.
To remove fan belt, slacken both adjustment bolts on motor plate by turning
anti-clockwise.
4.
Remove rear panels (opposite side to burner).
5.
Undo x 4 bolts and remove shelf assembly.
6.
Undo x 4 bolts on the fan assembly and then the fan can be withdrawn.
7.
Re-assemble as reverse.
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