Monogram ZV925 Installation Instructions Manual page 11

CONSTRUCT CEILING SUPPORT (Cont.(
■ S ecure 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.
■ T he cross framing must be accurately aligned to
assure correct positioning of the hood.
■ T he 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
■ U se the shortest and straightest duct route possible.
For satisfactory performance, duct run should not
exceed 100 feet equivalent length for any duct
configuration.
■ R efer to "Duct Fittings" chart to compute the
maximum permissible length for duct runs to the
outdoors.
■ T his vent hood must use 8" round rigid duct.
■ I nstall the house ductwork to run horizontally between
ceiling joists or straight up through the roof.
Finish the Ceiling
■ F inish 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.
1" = 2.5 cm; 1' = 0.3 m
49-80329 Rev. 5
Installation Preparation
2x 4 Min.
Cross Framing
2 x 4 min. cross framing
Ceiling
Ceiling
Joist joist
7-1/16"
7-1/16"
8" Duct
10"
Duct
Vent straight up through
Vent Straight Up
the ceiling
Through The Ceiling
10-1/16"
10-3/4"
Height
Height
adjustment
Adjustment
screws
Screw Holes
Ceiling joist
Ceiling Joint
2 x 4
2x4
11