Installation Preparation
36" Island Vent Hood
Step1
Advance
Planning (continued)
•Arrange cross framing in the ceiling to suit the existing structure. See examples.
–Secure each 2 x 4 block with at least four (4), #10 wood screws, 3” long (minimum size screws, 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 direc- tions. Check with a spirit level and adjust if necessary.
IMPORTANT: The ceiling structure must be capable of supporting the weight of the hood (approximately 100 pounds) and any inadvertent user contact loads. It is recommended that the hood support frame be supported by a minimum of 2 x 4 cross framing.
Cross Framing
Ceiling |
Joist 
|
| Support | |
Upper Half |
| Frame | |
Front | Opening | ||
Of Support | |||
| |||
Frame | of |
| |
| Hood |
|
Height |
Adjustment |
Slot |
Ductwork
•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 6” round duct. The 6” round duct can transition to
•Install the house ductwork to run horizon- tally 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 that ceiling is level, use shims if necessary.
Ceiling Joint
6"
Duct
2x4
Vent Straight Up
Through The Ceiling
6" Round
Duct Elbow
Flat
Standing
Vent Between
Ceiling Joists
7
