Duct Connections
•` Blower exhaust faces towards rear wall. Connect
blower exhaust to ducting with 3¼ x 10 piece. No
screws are necessary.
• Do not install 2 elbow fittings next to each other. Two
elbow fittings joined together create unusual air
patterns and can result in poor ventilation.
• Do not vent into an attic or crawl space. Always vent
outside.
• Seal all joints in venting system with duct tape to avoid
smoke or odor in home.
• Do not use laundry wall caps. Wall cap must have
minimum of 28 square inches free air space.
Duct Length
Maximum allowable calculated duct length is 60
equivalent feet.
• Use "Duct Length Piece Equivalents" section to
calculate duct length.
• Flexible duct is not recommended. However, if it is
used, one foot of flexible duct is equal to two feet of
smooth metal duct.
Duct Length Piece Equivalents
3¼ x 10 inch ducting pieces
7
3¼ x 10 inch to 6 inch
transition = 5 equivalent
foot
3¼ x 10 inch to 6 inch
transition = 4½
equivalent feet
3¼ x 10 inch flat elbow =
12 equivalent feet
3¼ x 10 inch 90 degree
elbow = 5 equivalent feet
3¼ x 10 inch wall cap
(Unrestricted) = 0
equivalent feet