Manual

Installation Instructions
WORKSHEET--CALCULATE TOTAL EQUIVALENT DUCTWORK LENGTH
DUCT
PIECES
O
J
3W'x 10"
Rect.,
straight
7" Round,
straight
6" Round,
straight
3W'x 10"
Rect.90°
elbow
3W'x 10"
Rect.45°
elbow
3W'x 10"
Rect.90°
flat elbow
3W'x 10"
Rect.
wall cap
with
damper
3W'x 10"
Rect.to
6" round
transition
3W'x 10"
Rect.to
6" round
transition
90° elbow
6" Round,
90° elbow
6" Round,
45° elbow
EQUIVALENT NUMBER
LENGTH x USED
1Ft. x ( )
1Ft. x ( )
1Ft. x ( )
14Ft. x ( )
8Ft. x ( )
33 Ft. x ( )
24 Ft. x ( )
18ft. w/o
damper) x ( )
2Ft. x ( )
4Ft. x ( )
12Ft. x ( )
7Ft. x ( )
= TOTAL
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Subtotalcolumn1 Ft.
MAXIMUM DUCT LENGTH: For satisfhctov_ air
i_lo_,eillent, the total dtlct length ot a 3¼" x 10"
rectangular; 6" or 7" diameter round duct should
not exceed 65 equivalent feet.
DUCT
PIECES
6"Round
wall cap
with
damper
6" Round
roofcap
6" Round
to
3W'x 10"
rect.
transition
6" Round
to
3W'x 10"
rect.
transition
90° elbow
EQUIVALENT NUMBER
LENGTH x USED =
24Ft.
(18ft. w/o
damper)
x( )
x( )
33Ft. x( ) =
2 Ft.
x( ) =
4 Ft.
x( ) =
TOTAL
R.
R.
Ft.
Ft.
Ft.
(_ 7"Round, 14Ft. x ( ) = Ft.90° elbow
7"Round, 9 Ft. x ( ) = Ft.
45° elbow
(_ 7" Round 28Ft. x ( ) = Ft.wallcap (21ft. w/o
with damper) x ( ) = Ft.
damper
7" Round 39Ft. x ( ) = Ft.roofcap
7" Round 1 Ft. x ( ) = Ft.
_,_ to
3W'x 10"
rect.
transition
5Ft. x( ) = Ft.
Subtotalcolumn2
Subtotalcolumn1
Totalductwork =
7" Round
to
3W'x 10"
rect.
transition,
90° elbow
Ft.
Ft.
Ft.
7