7
DUCTING CHART–JV5 Series Models
DUCTING CHART–JV6 Series Models
Equivalent Length in Feet
0
25
50
75
100
125
150
3
1
⁄
4
″
x 10
″
Rectangular Transition to 6
″
Round = 4.5 ft.
7
″
Round 90° Elbow = 8 ft.
7
″
Roof Cap = 30 ft.
250
200
150
100
Air V
olume in CFM
3
1
⁄
4
″
x 10
″
Rectangular
7
″
Round
•
•
•
•
•
•
•
•
•
Equivalent Length in Feet
0
25
50
75
100
125
150
3
1
⁄
4
″
x 10
″
Rectangular Transition to 6
″
Round = 4.5 ft.
7
″
Round 90° Elbow = 8 ft.
7
″
Roof Cap = 30 ft.
400
350
300
250
200
Air V
olume in CFM
3
1
⁄
4
″
x 10
″
Rectangular
7
″
Round
•
•
•
•
•
•
•
•
•
•
•
Follow the guidelines for proper duct sizing in the ducting charts.
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.