32
British Gas RD1
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Installation & Servicing
SERVICING
1. Refer to Frame 51.
2. Remove the burner and air box assembly. Refer to Frame 46.
3. Remove the electrode retaining nut.
4. Remove the pilot shield.
5. Remove the electrode and integral lead.
6. Fit the new electrode and lead,
ensuring that the pilot shield is replaced and reassemble in
reverse order.
7. Check the operation of the boiler.
56 DETECTION ELECTRODE AND LEAD REPLACEMENT
1. Refer to Frame 51.
2. Remove the screw retaining the front burner support
strap to the combustion chamber.
3. Remove the M5 pozi screw, situated at the left hand
bottom rear of the burner. Pull the burner downward to
disengage the retention tab and remove the burner.
4. At this stage the main burner injector can be removed,
checked, cleaned or replaced as required. Ensure that
an approved jointing compound is used sparingly.
5. Fit the new burner, ensuring that the retention tab is
correctly located in the air box slot and re-assembly in
reverse order.
6. Check the burner for cross-lighting and flame stability.
58 MAIN BURNER AND MAIN BURNER INJECTOR REPLACEMENT
57 HOT SURFACE IGNITER (HSI) REPLACEMENT
1. Refer to Frame 51.
2. Remove the fixing screws.
Swing the control box down into the
servicing position.
3. Disconnect the HSI lead from the
PCB and withdraw it from the control
box.
4. Remove the securing screw and
disengage the HSI mounting bracket
from the combustion chamber.
5. Remove the securing screw and
withdraw the HSI from the bracket.
6. Fit the new HSI and reassemble in
reverse order.
7. Check the operation of the boiler.
SER
VICING
