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6.2.5 Inspect burner
With the combustion chamber front
cover and heat exchanger front panel
removed it is possible to inspect the
burner. Any deposits should be
removed with a soft brush. Check the
condition of the ignition and
monitoring electrodes.
6.2.6. Check central heating
expansion vessel
Note : It is not necessary to carry out
this check every year - a check every
three years should be sufficient.
Release the pressure from the boiler as
described in section 7.1.2.
Remove valve cap from expansion
vessel charge point (2, fig. 49).
Check that internal charge pressure of
expansion vessel is between 0.7 - 0.9
Bar. If pressure is lower than this the
vessel should be re-pressurised using
an air pump.
Refit valve cap (2, fig. 49).
Open central heating service valves
and re-pressurised the boiler and
heating system if necessary (see
section 5.4).
6.3 Re-commissioning the boiler
•
Refit the heat exchanger front
panel.
•
Refit combustion chamber front
cover ensuring that the seal is in
good condition. Ensure that the
cover is correctly fitted and a good
seal is obtained.
•
Turn on the gas and electricity
supplies.
•
Check soundness of internal gas
connections.
•
Carry out electrical safety checks
(see section 5.1)
•
Check water soundness
•
Operate burner and check flame
picture.
•
Check for correct function of the
boiler ( see section 5.10).
•
Check burner pressure as described
in section 5.8 and boiler gas flow
rate.
•
Refit case (see Section 5.13)
2
1
3
fig. 48
fig. 49
2
31
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