Main Mitre-AS, Installation And Service Instructions Manual

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ACID/WATER SOLUTION MUST BE USED WITH EXTREME CAUTION. TAKE CARE NOT TO
SPLASH ONTO SKIN OR INTO EYES. WASH ANY AFFECTED AREAS WITH LARGE
AMOUNTS OF COLD WATER AND SEEK MEDICAL ADVICE
.
5. TO REMOVE ELECTRO-MAG. UNIT
Remove case front see section 1 .
Release thermocouple nut 10. Fig. 5 .
Release securing nut 16. Fig. 5 and pull electro-mag. unit clear of assembly.
Replace in reverse order.
6. TO REMOVE BURNER ASSEMBLY AND INJECTORS
Turn off gas and water supply. Open a hot outlet to release pressure. Remove case front, see
section 1. Remove the complete pilot and sensing device assembly see
section 3 . Release
union nut 17. Fig. 5 . Lift burner assembly vertically to fully expose spring and sealing washer.
Remove washer and spring assembly. Remove burner assembly.
Remove two fixing screws 18. Fig. 5 and pull burner assembly off manifold. To clean injectors
remove from manifold and blow through in op po-site direction to gas flow. Do not clean by
brushing or poking through orifice.
When re-fitting injectors re-seal the threads using an approved sealing compound, do not allow
sealing compound to block the injectors. When re-assembling the main valve spring and washer
ensure that the blind hole in the brass valve is correctly located on the push rod before re-fitting
the burner assembly.
Re-assemble the burner unit in reverse order ensuring that the location peg at the rear of the
unit engages in the positioning hole in the rear panel.
Fig. 7