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ボイラー Main Mitre-ASのPDF インストレーション＆サービスマニュアルをオンラインで閲覧またはダウンロードできます。Main Mitre-AS 18 ページ。 Gas fired -instantaneous sink water heater

Fig. 10

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7. TO REMOVE SLOW IGNITION DIAPHRAGM

Remove burner assembly see

Remove four screws 23.

Lift out diaphragm assembly, replace if necessary.

Re-assemble in reverse order ensuring that the brass weight is on the under side of the

diaphragm and locates in the gas chamber.

8. TO REMOVE WATER DIAPHRAGM

Turn off gas and water supply and drain unit by releasing drain screw and sealing washer 14.

Fig. 7

Remove case front see

Disconnect water supply at rear of water diaphragm assembly.

Remove front retaining plate by releasing three ﬁxing screws 19.

Remove burner assembly see

washers. Remove two vertical screws 24.

turning each four complete turns anti-clockwise and pull assembly forwards and out of

appliance. DO NOT lose rubber sealing washer from gas connection. Release two screws 26.

Fig. 11

by turning each four complete turns anti-clockwise. Separate water diaphragm assembly

from the Flame Safety Device. Separate water diaphragm assembly by releasing ﬁve screws 22

Fig.

7. DO NOT lose small by-pass tube when separating assembly.

When re-assembling ensure that the small by-pass tube is in position in the unthreaded hole in

the skirt of the water diaphragm assembly.

section 6

Fig. 9

and lift off the cover.

section 1

section 6

. Remove union nuts 20.

Fig.

10. Release two horizontal screws 25.

Fig. 5

and easing free.

Fig. 5

. DO NOT lose sealing

Fig. 10