Instructions / Assembly

Page 2.
SUPPLIED ACCESSORIES
Part name Appearance Quantity
Grille
1
Fan
1
Housing
1
Duct Connector
(4”)
1
GU24 base bulb lamp
(26W)
1
Grille bracket
1
Screw
(
ψ 4×25)
4
Screw
(M4x6)
1
Screw
(#8-32 x 1-1/4”)
1
1. INSTALLATIONS
Proper insulation around the fan to minimize building heat loss and
gain.
MOUNT HOUSING WITH FLANGE:
1-1. To bend the housing tabs out to 90 degree and make housing
tabs contact the bottom of the joist.
The housing mounts with 4 screws ( ψ 4×25). Screw housing to joist
through lowest holes in each mounting ange, then through the
other holes.
USING SUSPENSION BRACKETS (SOLD SEPARATELY)
1-2.
1-3.
Sliding suspension brackets available to allow for your specic
positioning of housing anywhere between joists and span up to
24”.
Insert suspension brackets into the channels on housing. Make
sure tabs face “up” shown.
1-4. Extend suspension brackets to the width of the joists. Hold fan
in place with the suspension brackets tabs wrapping around the
bottom of joist.
1-5. Fasten suspension brackets to joists with nails or screws through
holes near nails.
1-6. Secure suspension brackets together with screws.
2. DUCT CONNECTION
2-1. Insert the duct into the duct connector and tape all ductworks
connection to make them secure and air tight.
2-2. Install the duct with a gradient 1°~2° to the outside.
Ceiling
Grille
Tape
Tabs
Duct
Outside
Gradient
1°~2°
Inside
Duct connector
Roof cap
(with built-in
damper)
Short piece of exible
duct helps alignment
and absorbs
sound
Wall cap
(with built-in
damper)
Caulk termination
to duct
Fan housing
Seal gap
around housing
MODELS GBR80HL / GBR80MHL
Joist
Screw ( ψ 4 x 25)
Joist
Suspension Bracket
(Sold separately)
Tab Face
Channel
Joist Joist
Screw
Bottom of Joist