Zephyr Trapeze CTP-E 48SX Use And Installation Manual page 6

Equivalent number
Duct pieces
length x used
3 1/4" x 10" 1 Ft.
Rect.,
straight
7" Round, 1 Ft.
straight
7" Round, 1 Ft.
straight
3 1/4" x 10" 15 Ft.
Rect. 90
0
elbow
3 1/4" x 10"
9 Ft.
Rect. 45
0
elbow
3 1/ 4" x 10" 24 Ft.
Rect. 90
0
at elbow
3 1/4" x 10" 30 Ft.
Rect.
wall cap
with damper
3 1/4" x 10" 5 Ft.
Rect. to
6" round
transition
3 1/ 4" x 10" 15 Ft.
Rect. to
6" round
transition
90 elbow
0
6" Round, 15 Ft.
90 elbow
0
6" Round,
45 elbow
0
Subtotal column 1 =
Maximum Duct Length:
For satisfactory air movement, the total
duct length of a 3 1/4" x 10" rectangular, 6" or 7" or 8" diameter
round duct should not exceed 100 equivalent feet.
= Total
Ft.
x ( ) =
Ft.
x ( ) =
x ( ) = Ft.
x ( ) = Ft.
Ft.
x ( ) =
x ( ) = Ft.
x ( ) = Ft.
x ( ) = Ft.
Ft.
x ( ) =
x ( ) = Ft.
Ft.
9 Ft. x ( ) =
Ft.
4
Equivalent number
Duct pieces
length x used
6" Round 30 Ft.
wall cap
with damper
6" Round, 30 Ft.
roof cap
6" round to 1 Ft.
3 1/4" x 10"
rect.
transition
6" round to 16 Ft.
3 1/4" x 10"
rect.
transition
90 elbow
0
7" Round,
15 Ft.
90 elbow
0
7" Round, 9 Ft.
45 elbow
0
7" Round 30 Ft.
wall cap
with damper
7" Round, 30 Ft.
roof cap
7" round to 8 Ft.
3 1/4" x 10"
rect.
transition
7" round to 15 Ft.
3 1/4" x 10"
rect.
transition
90 elbow
0
Subtotal column 2 =
Subtotal column 1 =
Total ductwork
www.zephyronline.com
= Total
Ft.
x ( ) =
x ( ) = Ft.
Ft.
x ( ) =
x ( ) = Ft.
Ft.
x ( ) =
x ( ) =
Ft.
Ft.
x ( ) =
x ( ) = Ft.
x ( ) = Ft.
x ( ) = Ft.
Ft.
Ft.
=
Ft.