GE Profile JGP656 Series Technical Service Manual page 18

Optional Method —
Secure to Cabinet
Side With Top
Screw on Case
Or Use 2nd Screw
Secure the Lower Brackets
to Blower Housing
Air Flow
Screw
Plastic Ties
GEA00278
Preferred Method —
Secure the Upper
Brackets With Screws
Located on the Side of
Case and Attach to
Back Wall of Cabinet
GEA00242
Duct Tape Over Seam
and Screw
GEA00205
Install Downdraft Vent
1. Remove plastic ties on both ends at top of vent.
2. Place downdraft vent into countertop cutout against
back side.
3. Secure downdraft to countertop with supplied
brackets (see illustration).
• Fasten brackets to top screws on front side of
vent and secure to cabinet side wall just below
countertop, or
• Fasten one bracket to vent's side and secure to
cabinet's back wall.
4. Install two brackets on bottom of vent.
5. Attach brackets to slide screws on vent and to floor
using wood screws (not supplied).
6. When installing in a tile countertop surface, it may be
necessary to apply a locally approved caulking to
cover any gaps.
Install the Ductwork
Use minimum 26-gauge galvanized or 24-gauge
aluminum duct in 6-in. round or 3-1/4-in. x 10-in. size, or
a combination of both. PVC duct should be used if
installing under a poured concrete slab. Do not use
flexible plastic ducting.
Always use an appropriate roof or wall cap with damper.
Laundry type wall caps should never be used.
Use the straightest duct run possible.
For satisfactory performance, the duct run should not
exceed 150 ft. or its equivalent length if bends or other
various fittings are used. Refer to Table of Equivalent
Lengths for various duct configurations.
Install ductwork so the piece of duct nearest the
downdraft unit slots into the next piece of duct. Secure
joints with self-tapping screws and apply duct tape
around joints to ensure airtight seal.
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