Instructions / Assembly

ManualsBrandsCENTRIC AIR ManualsFans(4.0) Whole House Fan (3921 HVI-916 Certified CFM Rating). 2-Speed remote with timer & temp control. Includes R50 Damper

Installation Instructions

CentricAir 1.5, 2.0, 2.7, 3.4 & 4.0 Whole House Fan

READ AND SAVE THESE INSTRUCTIONS

SAFTEY INFORMATION

Read the following safety information before installing this Whole House Fan. Failure to follow these instructions could result in

personal injury, death or property damage.

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

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

• Before installing, servicing, or cleaning the unit, main electrical disconnect switch must be in the OFF position and install a

lockout tag.

CAUTION - FOR GENERAL VENILATING USE ONLY. NOT DESIGNED TO EXHAUST HAZARDOUS OR EXPLOSIVE

MATERIALS AND VAPORS.

WARNING - TO REDUCE THE RISK OF FIRE, ELETRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:

• Qualiedperson(s)inaccordancewithallapplicablecodesandstandards,includingre-ratedconstruction,mustdo

installation work and electrical wiring.

(877)267-3205

Summary of content (9 pages)

PAGE 1
Installation Instructions CentricAir 1.5, 2.0, 2.7, 3.4 & 4.0 Whole House Fan READ AND SAVE THESE INSTRUCTIONS SAFTEY INFORMATION Read the following safety information before installing this Whole House Fan. Failure to follow these instructions could result in personal injury, death or property damage. WARNING - TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING: • Use this unit only in the manner intended by the manufacturer.
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WHERE TO LOCATE Whole House Fans are designed to pull in fresh, cool air from the outside through open windows in your home. Hot air that is in the home is pulled up through the fan and into the attic, and then exhausted through vents in the roof, under eaves, soffits or gables. STEP 1: SELECT THE INSTALLATION SITE 1. The unit is designed to be installed on the floor of the attic between the joist that are a minimum of 16” on center. Most modern homes are built with either 16” or 24” on-center (OC) joists.
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INSTALLATION 1. **Warning: Cut out drywall to the dimensions of the Grille and not to the dimensions of the metal damper box. 1. From inside the attic at your predetermined location drill two holes at the edge of the joist approximately 12 inches apart. From inside the home use the two newly drilled holes as a guide to align the inner edge of the grill and outline with a pencil. Using a drywall saw or similar tool, cut out the drywall.
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2. MOUNTING FAN Mount Chain to Attic Framing: • Secure the chain with the springsnap clamp to the attic framing using the supplied 1/4” lag screw and flat washer. Secure the Fan to the Chain: • Mount the fan through one of the holes in the fan housing using the supplied springsnap clamp. Note: In order to reduce the possibility of vibration make sure the fan housing doesn’t touch any part of the attic structure.
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3. INSTALLING DAMPER BOX Attach the supplied brackets to the joist as shown in the picture using the 1 ½” hex screws.. • Place the damper box on top of the brackets as shown in the picture and screw one side of the damper box to the joist. The brackets will support the weight of the damper box.
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4. ATTACHING DUCT ***IMPORTANT*** DO NOT stretch ducting tight from end to end. ALWAYS leave some slack, otherwise the tape will pull away from the metal collar. • Place the end of the duct collar with the three (3) brackets over the fan shroud and secure with the ¼” lock nuts provided.
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• Using the black nylon strap hang the ducting from rafters with the 1 ½” hex screws and flat washers. NOTE: for a quieter operation be sure to get a 90 degree bend in the ducting. • Place the duct collar over the damper box and secure with the supplied self-taping screws.
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5. INSTALLING GRILLE • Install the grille over the opening. 6. REMOTE CONTROL OPERATION • Plug the electrical cord from the fan into the control box. Plug the electrical cord from the Damper Box in to the control box (Cold Climate Damper Only). Plug the electrical cord from the control box to an electrical outlet. Note: if you do not have an electrical outlet in your attic you will need to install one. Be sure to have a licensed electrician install all electrical wiring.
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REQUIRED VENTING AREA For proper operation of your Comfort Cool whole house fan, it is CRITICAL that your attic has sufficient venting area; otherwise the hot air cannot easily escape and creates back-pressure that can substantially reduce the performance of your new whole house fan. The “net-free” area of a vent is the total vent opening minus the loss caused by the interference of the screen, louver or grille covering the vent. • The Centric Air 1.5 requires a MINIMUM of 1.5 sq. ft.