Monogram ZV850 Instructions D'installation page 11

CONSTRUCT CEILING SUPPORT (Continued)
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.
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
For satisfactory performance, duct run should not
exceed 100 feet equivalent length for any duct
configuration.
maximum permissible length for duct runs to the
outdoors.
WARNING:
OF FIRE, USE ONLY RIGID METAL DUCTWORK.
between ceiling joists or straight up through the
roof.
Finish the Ceiling
of the ceiling joists and cross framing. Check to be
sure the ceiling is level; use shims if necessary.
Installation Preparation
" round rigid duct.
TO REDUCE THE RISK
11
Ceiling joist
6"
Duct
2 x 4
Vent straight up
through the ceiling