Owner's manual

ManualsBrandsVentamatic ManualsFansCX36BD2SPD

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Models:

CX242DDWT, CX302DDWT, CX24BD2SPD, CX30BD2SPD, CX36BD2SPD

Read all warnings and instructions before beginning to install this fan.

FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN INJURY OR EVEN DEATH

1. Do not attempt to use this fan with any speed control device.

2. Use this unit only in the manner intended by the manufacturer. If you have any

questions, contact the manufacturer.

3. Before servicing or cleaning this unit, switch power off at the service panel and

lock out to prevent power from being switched on accidentally. When service

disconnecting means cannot be locked, securely fasten a prominent warning

tag to the service panel.

4. Installation work and electrical wiring must be performed by a qualified person

in accordance with all applicable codes and standards, including fire-rated

construction.

5. When cutting or drilling into a wall or ceiling, do not damage electrical wiring

and other hidden utilities.

6. The combustion airflow needed for safe operation of fuel-burning equipment

may be affected by this unit’s operation. Follow the heating equipment

manufacturers guideline and safety standards such as those published by the

National Fire and Protection Association (NFPA), and the American Society for

Heating, Refrigeration and Air-conditioning Engineers (ASHRAE), and the local

code authorities.

CAUTION

1. This unit has an unguarded propeller. Do not use in locations readily

accessible to people or animals.

2. For general ventilating use only. Do not use to exhaust hazardous or

explosive materials and vapors.

3. Carbon monoxide is an odorless, colorless gas that can kill. It may

be drawn into the house by operating this fan if your fuel-burning

equipment is not properly maintained, or if you lack adequate attic

VENTAMATIC, LTD.

100 WASHINGTON STREET, MINERAL WELLS, TX 76068-0728

PHONE: (800) 433-1626 - FAX: (940) 325-9311 - www.bvc.com

INSTALLATION INSTRUCTIONS

FOR

WHOLE HOUSE FANS

DOUBLE CHECK FAN BLADES ARE SECURE TO HUB PRIOR TO

INSTALLATION. BLADES CAN BE DAMAGED DURING SHIPMENT AND

CAN BECOME A HAZARD UPON ACTIVATION OF MOTOR!

Summary of content (8 pages)

PAGE 1
INSTALLATION INSTRUCTIONS FOR WHOLE HOUSE FANS Models: CX242DDWT, CX302DDWT, CX24BD2SPD, CX30BD2SPD, CX36BD2SPD Read all warnings and instructions before beginning to install this fan. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN INJURY OR EVEN DEATH 1. Do not attempt to use this fan with any speed control device. 2. Use this unit only in the manner intended by the manufacturer. If you have any questions, contact the manufacturer. 3.
PAGE 2
INSTALLATION INSTRUCTIONS VERY IMPORTANT Please read before attempting installation The wooden fan frame is installed on top of the joists, and the shutters open up between the joists, so the rough opening will be smaller than the fan frame size SHUTTER ROUGH OPENING (L x W) 24-in 28 x 26 30-in 32 1/4 x 29 1/2 36-in 34 x 37 1/2 Veins run lengthwise in 24-in and 30-in shutters, and width-wise in 36-in shutters Center vein is stationary to allow no-cut joist installation *For model CX36BD2SPD – The joi
PAGE 3
FAN SIZE SQUARE FOOTAGE OF LIVING AREA, OR ATTIC SIZE IF MULTI-STORY MINIMUM NFA (NET FREE AREA) EXHAUST REQUIRED 24-in up to 1800 sq ft if 1 story, or attic size if multistory 8 to 10 sq ft (1152 to 1440 sq in) 30-in 2000 to 3000 sq ft if 1 story, or attic size if multistory 10 to 12 sq ft (1440 to 1728 sq in) 36-in over 3200 sq ft if 1 story, or attic size if multistory 12 to 14 sq ft (1728 to 2016 sq in) HOW DO THEY WORK? Whole House Fans are designed to pull in fresh, cool air from the outsi
PAGE 4
PREPARE THE SHUTTER OPENING Remove all insulation from the attic floor above the installation site (be sure to take proper precautions — wear gloves, goggles, and respirator mask). Select the correct rough opening dimension from the chart. FAN SIZE SHUTTER ROUGH OPENING 24-in 30-in 36-in 28 x 26 29 ½ x 32 ¼ 37 ½ x 34 *WARNING: USE THE SHUTTER ROUGH OPENING DIMENSIONS FROM THE CHART. DO NOT USE THE DIMENSIONS OF THE FAN FRAME OR THE INSIDE SHUTTER DIMENSIONS.
PAGE 5
CUT THE CEILING JOIST (SKIP THIS STEP IF YOU ARE USING THE JOIST-IN METHOD.) BEFORE cutting the ceiling joists, it is best to stabilize the joists from which you are removing a section. Using 2 x 6 lumber, form a bridge across the joist on either side of the opening. This step will give extra support to the joist, as you cut it, and will also help prevent the drywall from cracking.
PAGE 6
PREPARE AND INSTALL THE FAN ASSEMBLY IMPORTANT: Your new whole house fan is packed to prevent shipping damage. Before installing the fan in your attic, it must be prepared as follows. Belt Drive Models • • • • • • The motor is mounted to the underside of the struts for shipping. Remove the hardware and remount the motor to the top side of the struts.
PAGE 7
WIRING INSTRUCTIONS WARNING: Before proceeding with this step, disconnect the power supply at the service entrance, or switch off the appropriate circuit breaker. *Note* All wiring supplies and installations must meet or exceed the requirements of local electrical and fire codes. Wire to 120 Volt, 60 Hz. circuit only, using 14-3 two-conductor wiring with ground. Install the included switches in a double gang, UL listed wiring box, in a wall close to the fan. Refer to the figure below to wire all models.
PAGE 8
COMMON INSTALLATION ISSUES Motor Stops After 10-20 Minutes • • • A tight belt tension can cause the unit to overheat. Insufficient intake or exhaust Net Free Air. Open more doors and windows or increase the amount of ventilation in the attic. Check the bearing assembly for resistance on belt driven models to ensure there are no rough spots. Unit is Noisy • If the unit is considered to be too noisy in general, install the additional frame between the fan and mounting frame.