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9.9 Removing and refitting fan
Observe notes on servicing (see Ch. 9).
Removing
▶
Remove burner flange with gas/air interconnection (see Ch. 9.5).
▶
Remove nuts
5
with spring washers, remove gas valve
4
and air intake collec-
tor
3
.
▶
Undo and remove screws
1
and remove fan.
Refitting
▶
Refit fan in reverse order, ensuring:
▪
correct seating of O rings
2
and gasket
6
.
▪
Tighten nuts
5
with a torque of 1.5 Nm.
The air intake collector
3
is glued together and must not be opened.
Installation and operating instruction
Gas condensing boiler WTC-GB 90-A
9 Servicing
83266502 • 1/2010-08 • La
71-95