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AIR SUPPLY –
There needs to a route by which outside air can enter to replace the volume
being lost up the chimney. While this can sometimes be provided by air leaking in through
doors, windows etc., it is often necessary to fit a purpose-made air vent. An extractor fan, or
another fuel-using appliance, even in a different room, can remove this air.
Chimney fire. It is important to avoid soot in the chimney to avoid a fire (See trouble
shooting) If a fire occurs close primary and secondary air completely, call fire rescue and
calmly go through their questioner.