Delta VFB25AC, VFB25AEH, VFB25AD, VFB25AX, VFB25ACH User Manual

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INSTALLATION AND OPERATING INSTRUCTIONS

VENTILATION SYSTEM

MODELS: VFB25AX / VFB25AD / VFB25AC VFB25AEH / VFB25ADH / VFB25ACH

READ AND SAVE THESE INSTRUCTIONS

General Safety Information

1. Do not install this ventilating fan where air temperature may exceed 40°C (104°F).

2. Make sure that the electric service supply voltage is AC 110~220V, 50~60Hz.

3. Follow all local electrical and safety codes, as well as the Nation Electrical Code (NEC) and the Occupation Safety and Healthy Act (OSHA).

4. Always disconnect the power source before working on or near the ventilating fan, motor or junction box.

5. Protect the power cord from sharp edges, oil, grease, hot surfaces, chemicals or other objects.

6. Do not kink the power cord.

7. in Fig. A.

8. Provide suction parts with proper ventilation.

9. This unit is UL listed for use over a bathtub or shower when installed in a GFCI protected branch circuit.

10. These ventilating fans are intended for residential usage only.

WARNING

TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:

1. Use this unit only in the manner intended by the manufacturer. If you have any questions, contact the manufacturer.

2. Before servicing or cleaning unit, switch power o panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel.

3. person(s) in accordance with all applicable codes and standards,

at service

8. These models are UL listed for tub and shower enclosures.

9. Do not use this unit with any other solid-state control device. Solid-state controls may cause harmonic distortion, which can cause motor humming noise.

10. panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel.

11. NEVER place a switch where it can be reached from a tub or shower.

12. Not to be installed in a ceiling thermally insulated to a value greater than R40 (This is required for installation in Canada only).

Turning angle too large Duct shrink

Too many elbows Elbow near the body

Body

Fig. A

CAUTION

1. For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors.

2. Not for use in cooking area (Fig. B).

3. This product must be properly grounded.

to prevent back drafting. Follow the heating equipment manufacturer’s guideline and safety standards such as those published by the National Fire Protection Association (NFPA), and the American Society for Heating Refrigeration and Air Conditioning Engineers (ASHRAE) and local code authorities.

5. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.

6. Ducted ventilating fan must always be vented to the outdoors.

7. If this unit is to be installed over a tub or shower, it must be marked as appropriate for the application and be connected to a GFCI (Ground Fault Circuit Interrupter) – protected branch circuit.

Cooling Area

Cool in g

Equi pment

Fig. B

Fl oo r

SUPPLIED ACCESSORIES

Part Name Appearance Quantity

Grille 1

Long Screw

(M4x25)

Screw

(M4x12)

Suspension Bracket

(155mm)

B. Install with Joist

1. Choose the installation type according to the gure as below:

Spacing A on

Center Joists

12 inches Refer to Fig. D-01, E-01

16 inches Refer to Fig. D-02, E-02

Joist

19.2 inches Refer to Fig. D-03, E-03

24 inches Refer to Fig. D-04, E-04

Fig. C-01

Insert Suspension

Bracket

Suspension Bracket

(300mm)

Suspension Bracket

(355mm)

INSTALLATIONS

A. Install with Wood Frame

Model No. VFB25AD VFB25AC VFB25ACH VFB25AEH VFB25ADH VFB25AX

Install Dim.

(mm)

1. Body Installation

1-1. Construct the wood frame (not provided) with 30mm squarebar

1-2. Attach the duct connector to the wood frame with taping screw.

260 x 260 260 x 260 260 x 260 260 x 260 260 x 260 260 x 260

and attach it to the ceiling joist.

Duct Connector

I nch es ( mm )I nch es ( mm )

Fig. C-02

I nch es ( mm )I nch es ( mm )I nch es ( mm )I nch es ( mm )

2. Type I – 12 inches between joists

Fig. D-01

Suspension Bracket I

Suspension Bracket II

Body

Wood Frame

Taping Screw

1-3. Insert the body into the wood frame and connect it to the duct

connector. Secure the body on wood frame with taping screws.

1-4. Follow step 6 to 9 of installation to complete the installation work.

Body

Taping Screw

Fig. E-01

Joist

2-1. Insert the suspension bracket into the bracket cover of adaptor

side and the back of the fan body.

2-2. Insert the fan between joists. Make sure the fan body is level

and perpendicular with the joist.

2-3. Ensure the distance between ceiling and fan body for the

thickness of grille.

2-4. Secure the suspension bracket to joists by using screw.

2-5. Secure the suspension bracket to fan body by using screw.

2-6. Follow step 6 to 9 of installation to complete the installation work.

3. Type II – 16 inches between joists

5. Type IV – 24 inches between joists

Fig. D-02

Suspension Bracket III

Suspension Bracket I

Fig. E-02

Joist

Suspension Bracket II

Body

Joist

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.

Fig. D-04

Suspension Bracket III

Suspension Bracket I

Fig. E-04

Suspension Bracket II

Body

JoistJoist

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.

4. Type III – 19.2 inches between joists

Fig. D-03

Suspension Bracket III

Suspension Bracket I

Fig. E-03

Joist

Suspension Bracket II

Body

Joist

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.

6. Duct Connection

Outside

Gradient 1°~2°

Ceiling

Body

Grill

Tape

Inside

Duct

Inspection Hole

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.

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