Duct Fittings - Monogram ZV48T Installation Instructions Manual

DUCT FITTINGS

Use this chart to compute maximum
permissable lengths for duct runs to
outdoors.
Note: Do not exceed maximum permissable
equivalent lengths!
Maximum recommended duct
length for these hoods: 150 feet
Flexible ducting:
If flexible metal ducting is used, all
the equivalent feet values in the table
should be doubled. The flexible metal
duct should be straight and smooth
and extended as much as possible.
Do NOT use flexible plastic ducting.
Any home ventilation system, such as a
Note:
ventilation hood, may interrupt the proper flow of
combustion air and exhaust required by fireplaces,
gas furnaces, gas water heaters and other natu-
rally vented systems. To minimize the chance of in-
terruption of such naturally vented systems, follow
the heating equipment manufacturer's guidelines
and safety standards such as those published by
NFPA and ASHRAE.
Hoods Are Equipped
For 10" Round Duct
* H oods are supplied with a 10"
round transition. A locally
supplied transition is required
for other sizes.
Note: Outlet on top of hood is
8-1/8" x 8".
*Actual length of straight duct plus duct
fitting equivalent. Equivalent length of duct pieces
are based on actual tests conducted
by GE Evaluation Engineering and reflect require-
ments for good venting performance with any
ventilation hood.
Advance Planning
Duct Piece
10" round
to 8" round
Round,
straight
3-1/4" x 10"
3-1/4" x 12" straight
90° elbow
45° elbow
3-1¦4" x 12"
3-1/4" x 10"
90° elbow
3-1/4" x 10"
3-1/4" x 12"
45° elbow
3-1/4" x 10"
3-1/4" x 12"
90° flat elbow
10" round transition
to 3-1/4" x 10" or
3-1/4" x 12"
3-1/4" x 10" or
3-1/4" x 12" to
10" round transition
10" round to 3-1/4" x 10"
3-1/4" x 12" transition
90° elbow
3-1/4" x 10"
3-1/4" x 12" to 10" round
transition 90° elbow
Round
wall cap
with damper
3-1/4" x 10"
3-1/4" x 12" wall cap
with damper
Round
roof cap
7
Equivalent Quantity
Length* Used
5 ft.
1 ft.
(per foot length)
1 ft.
(per foot length)
8" Dia. 17 ft.
10" Dia. 24 ft.
8" Dia. 10 ft.
10" Dia. 14 ft.
15 ft.
14 ft.
8 ft.
9 ft.
33 ft.
36 ft.
9 ft.
6 ft.
16 ft.
13 ft.
9 ft.
8 ft.
8" Dia. 32 ft.
10" Dia. 41 ft.
24 ft.
26 ft.
8" Dia. 44 ft.
10" Dia. 56 ft.
Total Duct Run
Total
Length