Classic Combi FF 280 -
Installation
36
68 PILOT BURNER REPLACEMENT
1.
Refer to Frame 64.
2.
Remove the burner and air box assembly.
Refer to Frame 58.
3.
Remove the electrode retaining nut and remove the pilot
shield and electrode.
4.
Unscrew the central pilot fixing screw and lift the pilot clear
of the pilot injector. The pilot injector may now be
unscrewed if required.
5.
Replace the pilot burner and retain with the M4 screw
previously removed. Ensure that the copper sealing washer
is replaced when refitting the pilot injector.
70 MAIN BURNER & MAIN BURNER INJECTOR REPLACEMENT
1.
Refer to Frame 64
2.
Remove the screw retaining the front burner support bracket
to the combustion chamber.
3.
Remove the M5 pozi screw and washer, 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.
6.
Refit the M5 retaining screw and washer.
7.
Refit the boiler casing.
8.
Check the burner for cross-lighting and flame stability.
1.
Refer to Frame 64.
2.
Remove the burner and air box assembly. Refer to Frame 58.
3.
Remove the electrode retaining nut.
4.
Remove the pilot shield.
5.
Remove the spark electrode and integral lead.
6.
Fit the new electrode and lead in reverse order.
Ensure that the pilot shield is replaced.
7.
Check the spark gap. Refer to Frame 68.
8.
Replace the boiler casing.
9.
Check the pilot ignition.
69 SPARK ELECTRODE AND LEAD REPLACEMENT
6.
Replace the electrode and pilot shield, retaining both with
the electrode nut. Check the spark gap.
7.
Replace the box assembly.
8.
Replace the burner.
9.
Replace the boiler casing.
10.
The pilot is factory set to maximum and no further
adjustment is possible. Ensure that there is an inlet
pressure of 20 mbar available. Also check burner ignition
and cross-lighting.
SER
VICING
SERVICING