Duct Fittings - GE PVB98STSS Installation Instructions Manual

DUCT Use this chart to
compute maximum
FITTINGS
permissible lengths
for duct runs to
outdoors.
duct. It can
transition to 6"
NOTE: Do not exceed
round.
maximum permissible
equivalent lengths!
Downdraft Vent: 100' maximum
equivalent length
Flexible ducting:
equivalent feet values in the table should
be straight and smooth and extended as
much as possible.
NOTE: Any home ventilation system, such
as a cooktop with a downdraft exhaust
of combustion air and exhaust required by
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,
in accordance with local building code
requirements. Visit GEAppliances.com for
available makeup air solutions.
Installation Preparation
Duct Piece
equivalent. Equivalent length of duct pieces is based
on actual tests conducted by GE Evaluation Engineering
with any downdraft cooktop.
10
Equivalent
Dimensions Length*
1 ft.
1 ft.
6"
90° elbow 12 ft.
6"
45° elbow 7 ft.
90° elbow 14 ft.
45° elbow 8 ft.
6" round
transition 2 ft.
round to 6"
transition 2 ft.
6" round to
transition
90° elbow 4 ft.
round transition
90° elbow 4 ft.
6" round
wall cap
with damper 24 ft.
wall cap
with damper 24 ft.
6" round
roof cap 33 ft.
Total
Quantity Equivalent
Used Length
Total Duct Run