GE JV535, Owner'S Manual And Installation Instructions, Page: 8 / 16

DUCT EQUIVALENT NUMBER
PIECES LENGTH x USED = TOTAL
3 1 ⁄
4
″
x 10
″
1 Ft. x ( ) = Ft.
Rect.,
straight
7
″
Round, 1 Ft. x ( ) = Ft.
straight
6
″
Round, 1 Ft. x ( ) = Ft.
straight
3 1 ⁄
4
″
x 10
″
8.5 Ft. x ( ) = Ft.
Rect. 90°
elbow
3 1 ⁄
4
″
x 10
″
7 Ft. x ( ) = Ft.
Rect. 45°
elbow
3 1 ⁄
4
″
x 10
″
24 Ft. x ( ) = Ft.
Rect. 90°
flat elbow
3 1 ⁄
4
″
x 10
″
45 Ft. x ( ) = Ft.
Rect. (7 ft. w/o
wall cap damper) x ( ) = Ft.
with
damper
3 1 ⁄
4
″
x 10
″
4.5 Ft. x ( ) = Ft.
Rect. to
6
″
round
transition
3 1 ⁄
4
″
x 10
″
11.5 Ft. x ( ) = Ft.
Rect. to
6
″
round
transition
90° elbow
6
″
Round, 8 Ft. x ( ) = Ft.
90° elbow
6
″
Round, 6.5 Ft. x ( ) = Ft.
45° elbow
Subtotal column 1 = Ft.
8
WORKSHEET – CALCULATE TOTAL EQUIVALENT DUCTWORK LENGTH
DUCT EQUIVALENT NUMBER
PIECES LENGTH x USED = TOTA L
6
″
Round 34 Ft. x ( ) = Ft.
wall cap (6 ft. w/o
with damper) x ( ) = Ft.
damper
6
″
Round 30 Ft. x ( ) = Ft.
roof cap
6
″
Round 5.5 Ft. x ( ) = Ft.
to
3
1
⁄
4
″
x 10
″
rect.
transition
6
″
Round 14.5 Ft. x ( ) = Ft.
to
3
1 ⁄
4
″
x 10
″
rect.
transition
90° elbow
7
″
Round, 8 Ft. x ( ) = Ft.
90° elbow
7
″
Round, 6.5 Ft. x ( ) = Ft.
45° elbow
7
″
Round 34 Ft. x ( ) = Ft.
wall cap (6 ft. w/o
with damper) x ( ) = Ft.
damper
7
″
Round 30 Ft. x ( ) = Ft.
roof cap
7
″
Round 5.5 Ft. x ( ) = Ft.
to
3
1 ⁄
4
″
x 10
″
rect.
transition
7
″
Round 14.5 Ft. x ( ) = Ft.
to
3
1 ⁄
4
″
x 10
″
rect.
transition,
90° elbow
Subtotal column 2 = Ft.
Subtotal column 1 = Ft.
Total ductwork = Ft.
Installation Instructions
MAXIMUM DUCT LENGTH:
For satisfactory air
movement, the total duct length of a 3 1 ⁄
4
″
x 10
″
rectangular, 6
″
or 7
″
diameter round duct
should
not exceed 65 equivalent feet.