England's Stove Works 24-ICD, 50-SHW25, 50-TRW25 operation manual

Note on Outside Air Hookup: You can use an outside air hookup with our catalytic stoves. We highly recommend it for homes built since the more air-tight construction standards went into effect. This involves connecting a metal pipe (usually three inches (3”) in diameter - check your stove - and the pipe can be flex or rigid) from the air inlet pipe located on the bottom rear of the stove through your floor or wall. The outside end of this pipe should be covered in some manner to keep it clear of foreign matter.