In case of Induced draught, where is the fan/blower installed?

1.	In case of Induced draught, where is the fan/blower installed?
A.	Near the base of chimney
B.	At the top of the chimney
C.	At the grate
D.	At the base of the boiler
Answer» B. At the top of the chimney

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In case of Induced draught, where is the fan/blower installed?

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