What will happen if id fan on boiler not functioning?.Can the
Boiler run without id fan? What is the effect?
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Answer Posted / sheik nasir hussen
First of all Boiler willn't start without ID FAN due to Boiler interlock if by bypass this logic we start the boiler then draft can't be set without ID FAN Boiler will be trip with furnace draft high.if this logic also bypass then furnace will be pressurised before reaching required amount of air flow for combustion &proper combustion willn't occure which will damage the furnace tube and also there is a chances of furnace blast.
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