in boiler light up y APH start first

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in boiler light up y APH start first..

Answer / kkn

for efficient(proper) combustion by pre-heating the air.

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in boiler light up y APH start first..

Answer / salai jeyaveeran

during boiler startup we required a oxygen for combustion
which we consume frm the atmospher air sucked by a forced
draft fan (FD)which flows through APH thats APH is starrted
first

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