49-80329 Rev. 5
11
Installation Preparation
CONSTRUCT CEILING SUPPORT (Cont.(
■ Secure each 2 x 4 block with at least four (4), #10
wood screws, 3” long (not supplied). Use 8 wood
screws total for the two supports.
■
The cross framing must be accurately aligned to
assure correct positioning of the hood.
■
The cross framing must be level in all directions.
Check with a spirit level and adjust if necessary.
IMPORTANT:
The ceiling structure must be capable of
supporting the weight of the hood (approximately 200
pounds) and any inadvertent user contact loads. The
hood support frame will be supported by the 2 x 4 cross
framing.
Ductwork for Installations Vented to the Outdoors
■ Use the shortest and straightest duct route possible.
For satisfactory performance, duct run should not
exceed 100 feet equivalent length for any duct
configuration.
■ Refer to “Duct Fittings” chart to compute the
maximum permissible length for duct runs to the
outdoors.
■ This vent hood must use 8” round rigid duct.
■ Install the house ductwork to run horizontally between
ceiling joists or straight up through the roof.
Finish the Ceiling
■ Finish the ceiling surface. Be sure to mark location of
the ceiling joists and cross framing. Check to be sure
the ceiling is level; use shims if necessary.
Ceiling Joint
2x4
10"
Duct
Vent Straight Up
Through The Ceiling
8" Duct
Ceiling joist
2 x 4
Vent straight up through
the ceiling
Ceiling
Joist
10-3/4"
2x 4 Min.
Cross Framing
Height
Adjustment
Screw Holes
7-1/16"
2 x 4 min. cross framing
Ceiling
joist
7-1/16"
10-1/16"
Height
adjustment
screws
1” = 2.5 cm; 1’ = 0.3 m
