Advance Planning; Ductwork Planning; Ceiling Framing For Adequate Support - GE ZV855 Installation Instructions Manual

Advance Planning
DUCTWORK PLANNING
• The hood is designed to be vented vertically
through the ceiling. Use locally supplied elbows
to vent horizontallg through the rear wall.
• Determine the exact location of the vent hood.
• Plan the route for venting exhaust to the outdoors.
• Use the shortest and straightest duct route
possible. For satisfactorg performance, duct run
should not exceed 100' equivalent length for ang
duct configurations.
• Refer to "Duct Fittings" chart to compute the
maximum permissible length for duct runs to
the outdoors.
• Use rigid metal ductwork onlg.
ThroughThe Ceiling
Flat ..........
Standing
Vent Between
CeilingJoists
• This vent hood must use 6" round duct. The
6" round duct can transition to 3-1/4" x 10"
or 3-1/4" x 12".
• Install the house duct to run horizontallg between
ceiling joists or straight up through the roof.
• Install a wall or roof cap with damper at the
exterior opening. Order the wall or roof cap
and ang transition and length of duct needed
in advance.
WA RN ING: TO REDUCE THE R ISK
OF FIRE, USE ONLY RIGID METAL DUCTWORK.
CEILING FRAMING FOR ADEQUATE
SUPPORT
• These vent hoods are heavg. Adequate structural
support must be provided. The ceiling structure
must be capable of supporting the weight of the
hood and ang inadvertent user contact loads
(approximatelg 200 pounds). The hood support
frame will be supported bg 2 x 4 minimum cross-
framing.
• Installation will be easier if the vent hood is
installed before the cooktop or countertop below
is installed.
Accessory Duct Cover
A duct cover accessorg mag be required for gour
installation, depending on ceiling height.
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