GE PV977NSS - Manual (Page 8)

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Installation Preparation
ADVANCE PLANNING
Ductwork Planning
• These vent hoods are equipped for 8” round
ductwork.
• 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 satisfactory performance, duct run
should not exceed 100 ft. equivalent length for any
duct configurations.
• Refer to “Duct Fittings” chart to compute the
maximum permissible length for duct runs to the
outdoors.
• Use rigid metal ductwork only.
• Install a roof cap with damper at the exterior
opening. Order the cap and any transitions and
length of duct needed in advance.
• When applicable, install any makeup (replacement)
air system in accordance with local building code
requirements. Visit GEAppliances.com for available
makeup air solutions.
Ceiling Framing for Adequate Support
• These vent hoods are heavy. Adequate structural
support must be provided. The ceiling structure
must be capable of supporting the weight of the
hood and any inadvertent user contact loads
(approximately 200 pounds). The hood support
frame will be supported by 2 x 4 cross framing.
• Installation will be easier if the vent hood is
installed before the cooktop or countertop below is
installed.
Duct Covers
• All models are shipped with duct covers. For
supplied duct cover ceiling heights for vented
installation and recirculating installation, refer to
table on page 12.
POWER SUPPLY
IMPORTANT - (Please read carefully)
WARNING:
FOR PERSONAL SAFETY, THIS APPLIANCE MUST BE
PROPERLY GROUNDED.
Remove house fuse or open circuit breaker before
beginning installation.
Do not use an extension cord or adapter plug with
this appliance. Follow National Electrical Codes or
prevailing local codes and ordinances.
Electrical Supply
This vent hood must be supplied with 120V, 60Hz,
and connected to an individual, properly grounded
branch circuit, and protected by a 15 or 20 amp
circuit breaker or time delay fuse.
• Wiring must be 2 wire with ground.
• If the electrical supply does not meet the above
requirements, call a licensed electrician before
proceeding.
• Route house wiring in the ceiling, as close to the
installation location as possible. Allow additional
length from ceiling joists to reach the junction box
on the bottom of the hood support frame.
• Connect the wiring to the house wiring in
accordance with local codes.
Grounding Instructions
The grounding conductor must be connected to
a ground metal, permanent wiring system, or an
equipment-grounding terminal or lead on the
hood.
WARNING:
The improper connection of equipment-grounding
conductor can result in a risk of electric shock. Check
with a qualified electrician or service representative
if you are in doubt whether the appliance is properly
grounded.
PREPARE TO INSTALL THE HOOD