
33
icos system condensing -
Installation and Servicing
SERVICING
51
REPLACEMENT OF COMPONENTS
When replacing any component :
1.
Isolate the electricity supply.
2.
Turn off the gas supply.
3.
Remove the boiler front panel, refer to Frame 42.
After replacing ANY component check operation of the
boiler including gas soundness, gas rate and combustion
test.
1.
Refer to Frame 51.
2.
Remove the boiler sealing panel. Refer to Frame 44.
3.
Unplug the electrical lead.
4.
Disconnect the flue sampling tube from the thermistor
housing.
5.
Remove the aluminium nipple securing the thermistor to
the flue manifold.
6.
Withdraw the thermistor.
7.
Fit the new flue thermistor, using the gasket supplied.
8.
Re-assemble in reverse order.
9.
Check the operation of the boiler. Refer to Frame 51.
52 FLUE THERMISTOR REPLACEMENT
53 FAN REPLACEMENT
1.
Refer to Frame 51.
2.
Remove the boiler sealing panel - Refer to Frame 44.
3.
Disconnect the electrical leads from the fan.
4.
Undo the gas pipe union connection to the injector
housing.
5.
Remove the retaining screw and pull off the mounting
bracket.
6.
Remove the fan and venturi assembly.
7.
Remove the 3 retaining 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.
Re-assemble the boiler in reverse order taking care not to
overtighten the single retaining screw on the fan
mounting bracket.
11.
Check the operation of the boiler. Refer to Frame 51.
GENERAL
IMPORTANT.
When work is complete, if the sealing panel has been
removed, it must be correctly refitted - ensuring that a good
seal is made.
Note
.
In order to replace components in Frames 66 to 72 it is
necessary to drain the boiler. Refer to Frame 69.
THE BOILER MUST NOT BE OPERATED IF THE SEALING PANEL IS NOT FITTED
Flue
sampling
tube
Aluminium
nipple
Thermistor
Ecl 2097
Ecl 2058
Gas pipe union
Fan
Venturi
assembly
Mounting
bracket
Retaining
screw
Retaining screw
SER
VICING
Содержание icos system m3080
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