INSBFNHL1013
COMPONENTS
Housing
Grille
Sliding brackets (x4)
Back draft damper
Wire connectors (X3) (marettes)
Cable clamp
Screw 1⁄2 in. (x4)
Screw 1 in. (x2)
Screw 1 1⁄2 in. (x8)
TOOLS
• Hand saw (installation method using headers)
• Measuring tape
• Phillips screwdriver
• Flat head screwdriver
• Robertson screwdriver
• Utility knife
• Drill (optional)
A) INSTALLATION USING WOODEN HEADERS
Note: When using this method, the housing flange will rest flush against the wood frame in the ceiling
1
PREPARATION
Before proceeding with the installation, plan ahead by taking into consideration the required clearances, ductwork and electrical wiring
involved. Make sure it will not impact the existing wiring.
2
SPACING
Fan installation requires a vertical clearance of at least 7 inches within ceiling. If the joists
have a height of less than 7 inches, add filler in order to reach that height. Fan housing can be
centered between two joists spaced up to 24 inches on center.
3
BACK DRAFT DAMPER INSTALLATION
Secure the back draft damper (included) to the adaptor by inserting it in the appropriate slots.
Make sure the flap opens upwards once the unit is ceiling-mounted
4
WOOD FRAME
HEADER A – Header having a maximum thickness of 1 1⁄2’’ (e.g. 2” x 4”), placed horizontally
between the ceiling joists and screwed at each side. Must be laid flat and rest flush with the
joists to allow room above it for duct work and wiring. Length of this header is equal to the
distance between the joists.
HEADER B – Length of this header must be equal to the distance between the ceiling joists.
No specific thickness required.
N.B. If the joists have a height of less than 7 inches, add filler in order to reach that height.
3
Fig. 3.1
Fig. 4.1
Header A
Header B
Fig. 2.1
