U.S. Sunlight 9930TR User Manual

SOLAR POWERED

Tel: 877-50-USSUN

www.ussunlight.com

Instrucciones en español disponible en www.ussunlight.com

Installation and Mounting Guide

Florida Building Product Approval (# FL 14561) and Texas Department of Insurance (TDI) Approval
Use all 8 flashing screws included in package to comply with severe weather building codes.

Compatible with Solar Controller™ for after dark operation. Go to www.ussunlight.com for further details.

Thank you for purchasing the Solar Powered Attic Fan from U.S. Sunlight Corp. We are committed to providing alternative
energy products that can improve your everyday life and our environment. We have reduced packaging material and
eliminated Styrofoam to reduce the impact on landfills.

Installation video is available to view online at www.ussunlight.com.

If there is a problem with your U.S. Sunlight product call us at 1-877-50-USSUN

Spare parts, installation advice, or recommendations for professional installers in your area are only a phone call away.
Professional installation may be much less than you expect, please call us to get average rates for your area.

Please note that this product is designed for asphalt shingles, wood shake, or flat tile roofs with a minimum of 4/12 pitch.
If you have spanish tile, s-tile, concrete, metal or flat roof, please call us before attempting to install the product.

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Before beginning the installation of your new Solar Powered Attic Fan, please read through the entire installation
instructions and call us if you have any questions.

TOOLS REQUIRED

• Ladder

• Reciprocating saw or jig saw

• Power drill with a 1/2” – 1” inch drill bit

(only one needed)

• 1 – 2” deck screw and screw bit

• Hammer & roong nails or self taping
galvanized screws

• Caulk Gun with Waterproof Roong Sealant

• Measuring tape or ruler

• Permanent marker, sidewalk chalk or crayon

• Roong knife or box cutter

• Flat pry bar

Installation Instructions

It is suggested that you prepare the opening prior to bringing the fan up on the roof.

Always secure the fan on the roof to avoid injury or having the fan slide off the roof and get damaged.

Step 1 - Ventilation

To maximize the solar fan’s effectiveness you should remove or block any rooftop static vents or ridge
vents. If there is an existing turbine type vent, simply remove the old vent and use the same hole for
the new installation, or block completely. (fig. 1) Make sure you have proper intake ventilation at the
eave or fascia. Use a ratio of 1 sq. ft. of intake ventilation for every 600 sq. ft. of attic space.

Block or
Remove

fig. 2 fig. 3

fig. 1

Important Tip:

To properly close off any static vents, use tar paper and staples
as shown in (fig. 2 & 3).

© Copyright 2012 U.S. Sunlight Corp SolarAtticFan SmoothAirC01 ver 4

Mounting the Fan

If your fan comes with the solar panel detached, refer to Step 9a or 9b
for solar panel installation.

Step 2 – Sizing Requirements

See sizing chart on the product box or visit our website at www.ussunlight.com to assure that you select the correct number of
fans for your situation. Some attics have walled off or chambered areas that will require additional fans to properly vent the space.
If you have any questions or concerns please call our customer service specialists at: 1-877-50-USSUN

south or southwest

mid-day summer sun

fig. 4

From inside the attic, measure down from the roof peak approximately 18 to 24 inches and center this

spot between two rafters. Drill a screw through this mark into the plywood and roof shingle so it will be

Some models include in the box a template for cutting out the hole. It is printed on the cardboard protect-

ing the base of the fan. Punch out the template. From on top of the roof, locate the screw and place the

cardboard template over the top of the screw aligning it in the center hole of the template. Using a pen
or marker, trace a circle around the outer edge of the template, resulting in a circle with a 14” diameter.

(fig. 5) If your product box does not include the template, simply use a 7” string, one end attached to the

previously drilled screw and the other tied to a pen or marker to create a 14” diameter circle.

Step 3 – Positioning of the Solar Fan

The solar fan should be positioned to face south or southwest for optimum performance and should be
positioned on an area of the roof that is not shaded or otherwise blocked from the sun for extended periods
throughout the day. The solar fan should be installed 18 – 24 inches from the top of the roof peak and as
close to the mid-point of your house as possible. In the case that 2 or more fans are getting installed you
should separate the fans by at least 15 feet to optimize ventilation. (fig. 4)

Step 4 – Marking the Hole

easily located from on top of the roof.

Step 5 – Cutting the Hole

Using a power drill equipped with a ½ - 1” drill bit, drill a pilot hole anywhere along the
inside of the circle. Insert the saw blade into the pilot hole and follow the circle pattern to cut the hole
into the roof. (fig. 6)

Do not cut through any roofing rafters or framing members! Only cut and remove the roof sheeting and
shingles. Prior to cutting the hole, make sure you do not have any wires or waterlines in the area that

fig. 6

you are cutting. Before completely cutting out the circle, secure the removed material so it does not fall
into the attic space.

24”

roof peak

fig. 5

Step 6 – Lifting the Shingles

The nails located 5” above and to the side of the hole will need to be removed for the solar fan flashing

to slip between the felt paper and the shingles – (fig. 7) You should use a pry bar or reciprocating saw

to loosen or cut any nails and/or staples.

Do not attempt to force the unit into place. If it does not slide easily into place, a nail is most likely

obstructing the flashing. In some cases the builder may have used large washers to install the felt

paper. In this case lift up on the flashing as you are sliding it under the shingles.

fig. 8a

fig. 8b

fig. 8c

Step 7 – Installing the Solar Fan

Position the Solar Fan so that it is directly below the hole (fig. 8a) using the “Up” label
as a guide for orientation. Begin sliding the flashing of the Solar Fan underneath the

shingles and on top of the felt paper at the mid-point of the hole (fig. 8b). Continue sliding
the solar fan upward (making sure that the top of flashing is facing toward the top of the
roof) until it is positioned directly over the attic hole (fig. 8c). To comply with Florida Build-
ing Codes and TDI, remove shingles from all around the flashing and secure all 8 holes.

Step 8 – Securing the Solar Fan

Using the provided steel screws, secure the solar fan to the roof. The solar fan should be secured across the

bottom and on the sides of the flashing by driving screws through the visible pre-drilled holes at the bottom edge

of the flashing. To comply with Florida building codes and TDI, secure in all eight holes. Apply waterproof roofing

sealant to the screw heads (fig. 9). Use roofing nails as needed to secure any shingles that remain loose. Apply

waterproof roofing sealant to the backside of any loose shingles or nail heads that have been added.

5”

fig. 7

Shingle

Felt Paper

fig. 9