Aerotech BT 400-46 Installation And Operation Maintenance page 24

Section 4
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(d) Remove exhaust cover and place exhaust stack over exhaust pipe. If additional
If heater is operated inside a building, the exhaust gases will be conducted to the outside by means of an
extension pipe. Failure to comply may result in death or serious illness.
(e) Remove air outlet cover and attach flexible ducts. A 12 inch flexible duct can be
Kinks in the air ducts impede air flow. Spread out ducts so as to avoid sharp bends or kinks.
exhaust pipe is desired, use same size of pipe as used on the heater or larger.
NEVER REDUCE PIPE SIZE. Limit length of exhaust pipe to 20 feet. Longer
pipe runs may cause condensation of exhaust gases and other complications. All
pipe joints must be tight. Pitch any connecting stack or pipe upward at least one foot elevation
for every ten foot run.
attach directly to the duct connector at heat exchanger air outlet (see figure 4-6).
For 6 inch flexible ducts, install a 6 to 12 duct adaptor on duct connector, or
at the end of a 12 inch duct.
AEROTECH HERMAN NELSON INTERNATIONAL INC.
100 Eagle Drive, Winnipeg, Manitoba Canada R2R 1V5
Phone: 204-633-1999 (24 Hours) Fax: 204-694-1612 Email:
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12.18.07 REVISION 1.02
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