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icos - Installation & Servicing
SERVICING
Gasket
Orifice plate
Ecl 2336
5
3
7
4
55
BURNER REPLACEMENT
54
FAN REPLACEMENT
1. Refer to Frame 52.
2. Remove the boiler front and sealing
panels. Refer to Frames 45 & 46.
3. Disconnect the electrical leads from
the fan.
4. Unscrew the gas pipe union
connection to the injector housing.
5. Unscrew and remove the screw
retaining the fan mounting bracket.
6. Remove the fan and venturi assembly.
7. Remove the 3 screws and remove the
venturi assembly, noting the
orientation of the venturi in relation to
the fan body.
8. Transfer the venturi assembly to the
new fan, replacing the gasket if
evidence of damage or deterioration
is visible.
9. Fit the new fan / venturi assembly.
10.Reassemble the boiler in reverse
order, taking care not to overtighten
the screw on the fan mounting
bracket.
11. Check the operation of the boiler.
Refer to Frame 52.
1. Refer to Frame 52.
2. Remove the boiler front and sealing panels.
Refer to Frames 45 & 46.
3. Remove the fan assembly. Refer to Frame 49.
4. Remove the 6 screws securing the burner (the
3 screws at the rear are extended to ease
access).
5. Lift off the burner from the combustion
chamber.
6. Fit the new burner, replacing any damaged or
deteriorating sealing gasket.
7. Reassemble in reverse order.
8. Check the operation of the boiler. Refer to
Frame 52.
Note. Take care not to disturb the ionisation
probes at the front and rear of the
combustion chamber.
nm7402
Ionisation
Probes
4
5
6
SERVICING