Operation Manual
30
7.
ROUTINE SERVICING
To ensure continued efficient operation
of
the appliance, it
is
recommended
that it
is
checked and serviced as necessary- at regular intervals. The frequen-
cy
of
servicing will depend upon the particular installation conditions and usage
but
in
generar once a year should be adequate.
It
i~
the law that any service work must be carried out by a gas safe
reg1stered engmeer.
7.1
Front Cover Removal
Remove 2 screws at the bottom
of
the front panel
Pull forward at the bottom to disengage catches then lift the cover
off
the
pins at the top
of
the boiler .
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...
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7.2
Servicing Schedule
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..
......
Before commencing any service operation, ISOLATE the mains electric supply,
and TURN OFF the gas supply at the main service cock. Service the appliance
by following the full procedure aetailed below.
1.
Run the boiler
in
DHW mode and
CH
mode and carry out a pre service
check, noting any operational faults.
2.
Check the combustion performance whilst running
in
DHW mode at
maximum output, if suitable equipment for flue gas analysis
is
available.
(Note: the flue sampling point can
be
found on the flue turret elbow.
For correct boiler operation
the CO/C02 ratio
should
not
be
greater than
0.004).
If
this is not the case then refer to gas valve
adjustment
in
section 7.3