Owner's Manual
7
DUCT
EQUIVALENT NUMBER
PIECES LENGTH x USED = TOTAL
3
1
ø4s [s )W [ )W
Rect.,
straight
7s5RXQG )W [ )W
straight
6s5RXQG )W [ )W
straight
3
1
ø4s [s )W [ )W
Rect. 90°
elbow
3
1
ø4s [s )W [ )W
Rect. 45°
elbow
3
1
ø4s [s )W [ )W
Rect. 90°
flat elbow
3
1
ø4s [s )W [ )W
Rect.
IWZR
wall cap
damper)
[ )W
with
damper
3
1
ø4s [s )W [ )W
Rect. to
6s round
transition
3
1
ø4s [s )W [ )W
Rect. to
6s round
transition
90° elbow
6s5RXQG )W [ )W
90° elbow
6s5RXQG )W [ )W
45° elbow
6XEWRWDOFROXPQ )W
:25.6+((7³&$/&8/$7(727$/(48,9$/(17'8&7:25./(1*7+
DUCT
EQUIVALENT NUMBER
PIECES LENGTH X USED = TOTAL
6s 5RXQG )W [ )W
wall cap
IWZR
with
damper)
[ )W
damper
6s 5RXQG )W [ )W
roof cap
6s5RXQG )W [ )W
to
3
1
ø4s [s
rect.
transition
6s5RXQG )W [ )W
to
3
1
ø4s [s
rect.
transition
90° elbow
7s5RXQG )W [ )W
90° elbow
7s5RXQG )W [ )W
45° elbow
7s
5RXQG )W [ )W
wall cap (
IWZR
with
damper)
[ )W
damper
7s
5RXQG )W [ )W
roof cap
7s5RXQG )W [ )W
to
3
1
ø4s [s
rect.
transition
7s
Round )W [ )W
to
3
1
ø4s [s
rect.
transition,
90° elbow
6XEWRWDOFROXPQ )W
6XEWRWDOFROXPQ )W
Total ductwork = Ft.
Installation Instructions
MAXIMUM DUCT LENGTH: For satisfactory air movement,
the total duct length of a 3
1
ø4s[s rectangular, 7s diameter
round duct should not exceed 65 equivalent feet.
NOTE: Any home ventilation system, such as a ventilation
hood, may interrupt the proper flow of combustion air and
H[KDXVWUHTXLUHGE\ILUHSODFHVJDVIXUQDFHVJDVZDWHU
heaters and other naturally vented systems. To minimize the
chance of interruption of such naturally vented systems, follow
the heating equipment manufacturer’s guidelines and safety
standards such as those published by NFPA and ASHRAE.
When applicable, install any makeup (replacement) air system
in accordance with local building code requirements. Visit
GEAppliances.com for available makeup air solutions.