43
REpLaCEMENT OF COMpONENTs
gENERaL
When replacing aNy component
1.
2.
3.
4. Release the retaining clip and swing the control box down
boiler, including gas soundness, gas rate and combustion
IMpORTaNT.
When work is complete, the front panel must be correctly
Notes.
1. In order to assist fault nding, the control panel has
an LED diagnostic display. The key to boiler fault
conditions is shown in Frame 72
2. In order to replace components in Frames 58-71 it is
necessary to drain the boiler. Refer to Frame 57.
ThE BOILER MUsT NOT BE OpERa TED WIThOUT ThE FRONT paNEL FITTED
44
FaN REpLaCEMENT
1.
2.
3. Undo the gas pipe union connection to the
4. Remove the extended nut retaining the fan
5.
6. Remove the screw and twist venturi anti-
clockwise to remove venturi assembly, noting
the orientation of the venturi in relation to the
fan body.
7.
8. Fit the new fan / venturi assembly ensuring the
retaining tabs are correctly positioned and the
fan outlet sealing gasket is correctly positioned
9. Reassemble the boiler in reverse order, taking
care not to overtighten the screw on the fan
10.
2
4
3
4
sERVICINg
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