Duct Fittings - GE Monogram ZV1050 Installation Instructions Manual

DUCT FITTINGS

This Hood Must
Use 8" Round Duct
It Can Transition to
3-1/4" x 12" Duct
Use this chart to compute maximum
permissable lengths for duct runs to
outdoors.
Do not exceed maximum permissable equivalent
Note:
lengths!
Maximum duct length:
100 foot for range hoods.
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 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.
Advanced Planning
Duct Piece Dimensions
Round,
straight
3-1/4" x 12"
straight
90° elbow
45° elbow
3-1/4" x 12"
90° elbow
3-1/4" x 12"
45° elbow
3-1/4" x 12"
90° flat elbow
8" round to
3-1/4" x 24" transition
3-1/4" x 12"
to 8" round transition
8" round
to 3-1/4" x 12"
transition 90° elbow
3-1/4" x 12" to 8"
round transition 90° elbow 15 ft.
Round
wall cap
with damper
3-1/4" x 12" wall cap
with damper
Round
roof cap
Round
roof vent
* Actual length of straight duct plus duct fitting
equivalent. Equivalent length of duct pieces are based
on actual tests conducted by GE Evaluation Engineer-
ing and reflect requirements for good venting
performance with any ventilation hood.
5
Total
Equivalent Quantity Equivalent
Length* Used Length
1 ft.
(per foot
length)
1 ft.
(per foot
length)
15 ft.
9 ft.
15 ft.
9 ft.
20 ft.
1 ft.
5 ft.
5 ft.
30 ft.
30 ft.
26 ft.
24 ft.
Total Duct Run