Step Install Downdraft Vent, Step Install the Ductwork

Step 1

Install Downdraft Vent

Place the downdraft vent into the countertop cutout, against the back side.

Optional Method –	Preferred Method –
Secure to Cabinet	Preferred Method –
Side With Top	Secure the Upper
Screw on Case	Brackets With Screws
Or Use 2nd Screw	Located on the side of
	Case and Attach to
	Back Wall of Cabinet

Secure the Lower Brackets

to Blower Housing

Place the downdraft vent into the countertop cutout, against the back side.

■Secure the downdraft to the countertop supplied brackets. See illustration.

–Fasten brackets to top screws on the front side of the vent, secure to cabinet side wall just below the countertop. Or,

–Fasten one bracket to vent side and secure to cabinet back wall.

–Install two brackets on the bottom of the vent. Attach brackets to slide screws on the vent and to the floor using wood screws (not supplied).

■When installing in a tile countertop surface, it may be necessary to apply a locally approved caulking to cover any gaps.

Step 2

Install the Ductwork

Use minimum 26 gauge galvanized or 24 gauge aluminum duct in 6″ round or 31⁄4″ x 10″ 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.

Duct tape over seam and screw

Air flow

Screw

■Install ductwork so that the piece of duct nearest the downdraft unit slots INTO the next piece of the duct. Secure the joints with self-tapping screws and apply duct tape around the joints to ensure an airtight seal.

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