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8.0
Changing Components - Page 25
8.9 Burner & Main Injector
1. Remove the controls cover panel from its retaining clips
(Fig. 69).
2. Remove the lint arrestor by pulling forward (Fig. 70).
3. Remove the four hexagon headed screws holding the
burner to the mounting plate (Fig. 71).
4. If required the main injector can be unscrewed from the
feed pipe and replaced. The copper sealing washer must be
retained for re-use or replace if damaged (Fig. 72).
5. Reassemble in reverse order.
8.10 PiIot/A.S.D. Assembly
WARNING: The Pilot/A.S.D. Assembly should not be
adjusted in any way. The A.S.D. must not be altered so
that it will not operate or be bypassed in anyway. The
thermocouple cannot be changed as an individual
component. The complete assembly must be replaced in
the event of one or other component failure(s). Only use
a Genuine Baxi Spare Part.
1. Remove the controls cover panel from its clips if not
already done so (Fig. 69).
2. Remove the A.S.D. thermocouple nut at the rear of the
valve (Fig. 75). Remove the ignition lead from the A.S.D.
electrode and piezo igniter (Fig. 73 & 74). Undo and remove
the pilot feed pipe at the A.S.D. and valve (Fig. 73 & 75).
3. Remove the three screws holding the burner feed pipe to
the gas valve (Fig. 67 - page 24).
4. Undo the screw holding the A.S.D. bracket to the burner
mounting plate and disengage the tab on the bracket from
the plate. Undo the screw holding the A.S.D. to its bracket
and remove the pilot shield (Fig. 73).
5. Fit the new A.S.D. onto the bracket (Fig. 73) and connect
the ignition lead to the electrode. Ensure that the pilot shield
is refitted.
6. Engage the tab on the A.S.D. bracket in the hole in the
burner mounting plate. Ensure that the pilot aeration tube
seal sits in the recess in the sensing pipe adaptor. Refit the
retaining screw.
7. Reassemble in reverse order, ensuring the "O" ring seal
between the burner feed pipe and gas valve is not damaged.
8.11 Ignition Lead
1. Remove the controls cover panel if not already done so.
Pull the lead off the spade terminals on the piezo unit and
the A.S.D. electrode (Fig. 73 & 74).
2. Reassemble in reverse order.
25
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