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British Gas RD1
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Installation & Servicing
SERVICING
British Gas Services recommend that appliances are
regularly serviced at 12 month intervals. However, where an
appliance is being constantly monitored, as is the case with
an RD technology boiler, the interval can be extended to 24
months without detriment to performance or reliability. It is the
law that any service work must be carried out by a registered
CORGI installer.
a. Light the boiler and carry out a pre-service check, noting
any operational faults. Operate the boiler for at least 20
minutes. Check the gas consumption.
b. Connect a suitable gas analyser to the sampling point on
the top RHS of the back panel. For correct boiler operation
the CO/CO
2
content of the flue gas should not be greater
than 0.004 ratio. If this is the case and the gas input is at
least 90% of the nominal, then no further action need be
taken. If not, proceed to paragraph c.
c. Clean the main burner. Refer to Frame 48.
d. Clean the heat exchanger. Refer to Frame 47.
e. Clean the main and pilot injectors. Refer to Frame 48.
f.
Remove any debris from inside the base of the casing.
4. Unplug the hot surface igniter lead from printed circuit
board and withdraw it from the control box.
5. Remove the 4 screws retaining the air box/pilot assembly
to the vertical manifold and carefully remove the assembly.
1. Remove the screw retaining the front burner support strap
to the combustion chamber. Remove the M5 pozi situated
at the LH bottom rear of the burner and pull the burner
downwards to disengage the retention tab. Remove the
burner to a safe place for inspection and cleaning.
2. Remove the fixing screws and swing the control box down
into the servicing position. Refer to Frame 53.
3. Remove the hot surface igniter securing screw and
disengage from the combustion chamber.
1. If the Sealed System Unit is fitted lift off the casing.
2. Open the controls support door and release the 2 captive screws at the
bottom of the casing. Swing the bottom of the boiler casing out until the
controls support casing has cleared the controls, then unhook the casing
top from the pack panel. Retain the casing in a safe place. Where the
removal of the casing is impaired by a pelmet, the instruction in Frame 2
should be followed.
3. Isolate the gas supply at the service cock fitted to the boiler.
45 BOILER CASING REMOVAL
44 SCHEDULE
46 BURNER, IGNITER AND AIR BOX REMOVAL
g. Check that the flue terminal is unobstructed and that
the flue system is sealed correctly.
h. If the appliance has been installed in a compartment,
check that the ventilation areas are clear.
The servicing procedures are covered more fully in
Frames 45 to 50 and must be carried out in sequence.
WARNING.
Disconnect the electrical supply and turn off gas supply.
IMPORTANT. After completing the servicing or exchange of
components always test for gas soundness and carry out
functional checks as appropriate.
When work is complete the casing MUST be correctly
refitted, ensuring that a good seal is made.
The boiler must NOT be operated if the casing is not
fitted.
Note.
In order to carry out either servicing or replacement
of components, the boiler casing must be removed. Refer
to Frame 45 .
SER
VICING
