Delta VFB25AX manual Joist Mounting Install, Ventilation Fan Installation Guide, Step, Fig. D-02

Ventilation Fan Installation Guide

Joist Mounting Install

Step

1

Step

3

Choose the installation spacing between two joists.

Insert the duct into the duct connector.

Fig. C-01

A

Outside

Inside

12(304.8)

Tape

Duct

Body

Inches (mm)

Gradient

Joi

st

Fig. C-02

Ceiling

1°~2°

16(406.4)

Inspection Hole

19.2(487.7)

Grill

24(609.6)

Spacing A on Center Joists

Insert Suspension bracket

12 inches

Refer to Fig. D-01, E-01

16 inches

Refer to Fig. D-02, E-02

19.2 inches

Refer to Fig. D-03, E-03

24 inches

Refer to Fig. D-04, E-04

Inches (mm)

Step

2

Step

4

Use bracket to mount fan body between the joists.

Connect wires as shown in wiring diagram below.

Fig. D-01

Fig. D-02

Switch

Box (Purchase separately)

Ventilation Fan

Black

Live

Suspension

On

Suspension

Suspension

White

Neutral

Bracket II

Bracket III

Bracket II

Green

Suspension

Body

Suspension

Body

Ground

Bracket I

Bracket I

Fig. E-01

Fig. E-02

Step

5

Insert the mounting springs into the slots and

mount the grille to the body.

Joist

Joist

Joist

Joist

Slots

Type I -12 inchs between joists

Type II -16 inchs between joists

Fig. D-03

Fig. D-04

Spring

Suspension

Suspension

Suspensio

n

Suspension

Grill

Bracket III

Bracket III

Bracket II

Bracket II

Suspension

Suspension

Body

Body

Bracket I

Bracket I

Fig. E-03

Fig. E-04

Joist

Joist

Joist

Joist

Type III - 19.2 inches between joists

4405 Cushing Parkway Fremont, CA 94538

Type

IV - 24 inches between joists

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