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Floor
1. Locate studs in floor.
2. Measure to locate center of floor duct location. See
figure below.
3. Cut an opening for floor transition piece as illustrated
in figure below. Cutout should be 7
square. If opening is not correctly aligned, duct does
not connect properly.
4. Ducting is completed in Duct Connection section.
A
A—10
7
/
inches
8
B—13
1
/
inches for installation with counter top or backsplash
8
5
behind range. 11
/
inches for installation without counter top
8
or backsplash behind range.
Floor Duct Location
1
1
/
x 7
/
inches
4
4
B
Duct Length
Ducting design is in terms of maximum length of straight
metal duct. To ensure proper air movement, limit fittings,
other than straight, to 50% of total 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 because it can
create a fire hazard. However, if it is used, one foot of
flexible duct is equal to two feet of smooth metal duct.
10'
Duct Length Example
10
Transition
Piece
0'
90° Elbow
5'
10' of Duct
10'
Wall Cap
0'
Total Feet
15'
5'
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