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b) Roof outlet requirement:
c) Chimney requirement:
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER
APPLIANCE!
Gyrofocus requirement: the total length of flue (inside + outside) must be 14 feet
minimum (17 feet for an installation less than 3 miles from the ocean or if a 30°
elbow is necessary).
The gyrofocus must be connected to a chimney complying with the
requirements for Type HT chimneys in the standard for Chimneys, Factory-built,
Residential Type and Building Heating Appliance, UL 103 / ULC S629. For
example, a class A insulated stainless steel flue chimney system with an 8-inch
minimum inside diameter.