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ROUTINE SERVICING
6
T
o ensure continued efficient operation of the appliance, it is
recommended that it is checked and serviced as necessary at
regular intervals. The frequency of servicing will depend upon the
particular installation conditions and usage, but in general once a
year should be adequate. It is the law that a competent person,
such as British Gas or other CORGI registered personnel, must
carry out any service work.
Service the appliance by following the full procedure detailed
below:
6.1
COMBUSTION CHECK
The appliance incorporates a flue sampling point on the
appliance flue elbow, or appliance vertical flue adaptor. If
suitable equipment to analyse the flue gas is available, remove
the plastic cap and fit a 6 mm inside diameter sample tube.
When the appliance is operating at maximum output check that
the gas supply pressure is 20.0 mbar, using the inlet pressure test
point is located on the gas supply cock.
Before commencing any service operation, ISOLATE the mains
electrical supply, and TURN OFF the gas supply at the main
service cock.
If the measured combustion values are significantly
outside the figures stated in section 2.3 contact
Halstead Boilers Ltd. Service Helpline:
01926 834834.
Operate in DHW mode, at full rate. After ten minutes operation
check the CO
2
values and CO/CO
2
ratio and compare with
those figures stated in section 2.3. Do not forget to replace the
plastic cap after use.
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