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Commissioning - Page 24
3.10
Refit the White Front Case.
3.11
Handing Over to the User
After completion of installation and commissioning of the system, the installer should hand over to the Householder by the
following actions:
a) Explain to the Householder where to find the User's Guide and his/her responsibilities under the 'Gas Safety (Installation
and Use) Regulations 1994. (As Amended)'.
b) Explain and demonstrate the lighting and shutting down procedures.
c) Demonstrate the operation of the boiler including the use and adjustment of all system controls. This then ensures the
greatest possible fuel economy consistent with household requirements of both heating and hot water consumption.
Advise the User of the precautions necessary to prevent damage to the system, and to the building, in the event of the
system remaining inoperative during frost conditions.
d) Explain the function and the use of the boiler switch, central heating switch and Reset button ('e' models only).
e) Explain and demonstrate the function of time and temperature controls, external frost thermostat (if fitted) and radiator
valves, etc. for the economic use of the system.
f)
If a Time Control is fitted (internal or external), then draw attention to the timer 'User Instructions' and hand them to the
householder.
g) Stress the importance of regular servicing by a qualified Heating Engineer and that a comprehensive service should be
carried out AT LEAST ONCE A YEAR.
h) Explain the function of the Low System Pressure indicator light.
i)
An internal frost thermostat is fitted to the appliance, it must be explained that the Boiler switch must be in the On
position (with the mains light illuminated) to provide protection of the appliance, if it is not to be used during winter
periods.
Note: the Frost thermostat will operate with the central heating switch in any position therefore when leaving the property in
cold weather for extended periods, the boiler will be protected even when the switch is set to Off (Mid position).
4. Servicing - Page 24
To ensure the continued safe and 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 per
year should be adequate. It is the law that all servicing work
is carried out by competent person such as British Gas or
other CORGI registered personnel.
WARNING: Before the start of any maintenance work,
disconnect the mains electricity supply to the appliance by
removing the plug from the socket or by switching off at the
external isolating switch. The gas distribution pipework and
all associated appliances (including the boiler) must be
checked for gas soundness. The appliance gas supply
should be isolated at the gas service cock, (one quarter turn
of square spindle) if dismantling gas carrying components.
The following notes apply to the appliance but it should be
remembered that attention must also be paid to the heating
and hot water systems in the property with special attention
to radiator valves, thermostats, clocks, leaking hot water
taps etc.
Where it is necessary to replace a gasket that relies on
adhesive for securing - this adhesive will be supplied with
the gasket in the spares kit.
Prior to servicing, Remove the white front case
(see 5.1 in `Routine Maintenance'). Operate the appliance
by turning On a hot water tap to a high water flow and
observe the main burner.
Look through the sight glass and check that the flame covers
all the flame ports and is of a light blue colour. Yellow
flames and excessive lifting of flames indicate poor
combustion.
Inspect the pilot flame for size and colour. The pilot burner
pressure is non-adjustable. The pilot flame should heat the
thermocouple so that the pilot safety device is "held in" but
must not cause the thermocouple to glow red. Figure 23
illustrates the approximate size of the correct flame. If there
is excessive flame replace the pilot injector.
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