Delta VFB25AD User Manual Page 3

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3. Type II – 16 inches between joists
3-1. Insert the suspension bracket into the bracket cover of adaptor
side and the back of the fan body.
3-2. Insert the fan between joists. Make sure the fan body is level
and perpendicular with the joist.
3-3. Ensure the distance between ceiling and fan body for the
thickness of grille.
3-4. Secure the suspension bracket to joists by using screw.
3-5. Secure the suspension bracket to fan body by using screw.
3-6. Follow step 6 to 9 of installation to complete the installation work.
4. Type III – 19.2 inches between joists
4-1. Insert the suspension bracket into the bracket cover of adaptor
side and the back of the fan body.
4-2. Insert the fan between joists. Make sure the fan body is level
and perpendicular with the joist.
4-3. Ensure the distance between ceiling and fan body for the
thickness of grille.
4-4. Secure the suspension bracket to joists by using screw.
4-5. Secure the suspension bracket to fan body by using screw.
4-6. Follow step 6 to 9 of installation to complete the installation work.
Outside
Gradient
1°~2°
Inspection Hole
Grill
Body
Tape
Duct
Inside
Ceiling
3
5. Type IV – 24 inches between joists
5-1. Insert the suspension bracket into the bracket cover of adaptor
side and the back of the fan body.
5-2. Insert the fan between joists. Make sure the fan body is level
and perpendicular with the joist.
5-3. Ensure the distance between ceiling and fan body for the
thickness of grille.
5-4. Secure the suspension bracket to joists by using screw.
5-5. Secure the suspension bracket to fan body by using screw.
5-6. Follow step 6 to 9 of installation to complete the installation work.
6. Duct Connection
6-1. Insert the duct into the duct connector and tape all ductworks
connection to make them secure and air tight.
6-2. Install the duct with a gradient 1°~2° to the outside.
Suspension
Bracket I
Suspension
Bracket III
Suspension
Bracket II
Body
Joist
Joist
Fig. E-02
Fig. D-02
Suspension
Bracket III
Suspension
Bracket I
Suspension
Bracket II
Body
JoistJoist
Fig. E-04
Fig. D-04
Suspension
Bracket III
Suspension
Bracket I
Suspension
Bracket II
Body
Joist
Joist
Fig. D-03
Fig. E-03
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