Solar Attic Fan
Installation Instructions
IMPORTANT! Before Installing...
Please take the time to read through the ENTIRE instructions prior to starting any work.
1. Ensure normal safety precautions are taken when
using tools and walking on roofs.
2. Do not cut any structural members in the house.
3. Measure twice and cut once.
When determining location of the unit, try to place the solar attic fan on the south side of the roof. Also consider potential
problems such as objects shading the unit during certain times of the day. The unit should be centered on the roof, and the
center of the unit should be about 2 feet down from the roof ridge.
Note: Exploded view for illustrative purposes.
Unit comes pre-assembled.
A. (2) Self-Tapping Screws
B. Custom Solar Panel
C. Wire Lead
D. Adjustable Solar Panel Bracket
E. Aluminum Shroud
F. Custom 36V DC Motor
G. Motor Isolation Bracket
H. Air Driven Precision Pitch 5 Blade Fan
I. 4” x 48” Stainless Steel Wire Mesh
J. (4) .09” Aluminum Shroud Support Bracket
K. (6) #10 x 1.5” Stainless Steel Phillips Head Screws
L. Aluminum Flashing
M. Caulk
■ Caulking Gun
■ Marking Pencil
■ Measuring Tape
■ Reciprocating Saw
■ Safety Goggles
■ Screwdriver
■ Stud Finder
■ String
■ Utility Knife
■ Ladder
Roof rafters are generally 16” or 24” on center. On 16” on center construction, the installer can either cut a 14” hole between
the rafters or cut a 19” hole with the roof rafter running through the cut hole. On 24” on center construction, cut a 19” hole between the roof rafters. Follow the steps for the opening size needed for your specific application.
Choose a location for the solar attic fan, a southern exposure is best. If a southern
exposure is not feasible for your installation, the fan can be installed on any other
exposure and the solar panel adjusted to capture maximum sunlight.
DETERMINE SIZE OF HOLE NEEDED FOR YOUR INSTALLATION:
On 24” on center construction, center the fan between the rafters and cut a 19”
hole. On 16” on center construction, the installer can either cut a 14” hole between
the rafters or cut a 19” hole with the roof rafter running through the hole (see
illustration below in step 4).
Hammer a nail at the center of the location chosen between rafters
for the solar attic fan. The center of the unit should be about 2 feet
down from the ridge.
19” HOLE: Attach a string to the nail. Measure 9.5” of string and
attach a marking pen to the string, see diagram. Scribe a 19” circle onto
the roof shingles.
14” HOLE: Attach a string to the nail. Measure 7” of string and attach a marking pen
to the string, see diagram. Scribe a 14” circle onto the roof shingles.
With a reciprocating saw, cut the diameter of the hole. NEVER CUT THROUGH
ANY ROOF RAFTERS. LEAVE ALL FRAMING MEMBERS IN PLACE.
IMPORTANT: The solar attic fan must be installed between the roof rafters or
over a roof rafter. DO NOT CUT THROUGH ANY FRAMING MEMBER. Only
remove roof sheathing.
19” HOLE: With a razor knife, cut a four inch slit through the
shingles and tar paper at the three and nine o’clock positions of
the flashing. This allows for the foot print of the flashing to be
inserted under the shingles.
14” HOLE: Additional shingles may also need to be removed on
the high side towards the ridge to allow the flashing to slide over
the hole (see inset).
Insert the reciprocating saw blade sideways at the three o’clock position and
commence cutting the roofing nails up and around to the nine o’clock position.
This process removes the nails that will prevent the flashing footprint from
sliding up underneath the shingles.
Caulk the underside of the flashing with the provided caulking material (M).
Two concentric rings of caulking material is sucient.
NOTE: Installation on tile roofs will require the use of a tile skirt.
Taking care not to smear caulk on the exposed shingles, slide flashing under tar
paper and shingles and force flashing up until the shingles come in contact with the
raised portion of the flashing. The bottom side of the flashing will be on top of the
shingles. Secure flashing with provided (6) Phillips head screws (K) through the predrilled holes on the flashing footprint.
NOTE: Local Building Code requirements may specify anchoring that requires
additional screws installed in the flashing. For Florida and Texas installations in
High Velocity Hurricane Zones, please refer to:
Florida Dept. of Community Aairs:
http://www.floridabuilding.org/pr/pr_app_srch.aspx
Texas Dept. of Insurance:
http://www.tdi.state.tx.us/wind/prod/indexrv.html
Caulk over the screw heads that are exposed to the weather. Use remaining caulk
to seal the areas where the 4” slits were made and around the area where the
shingles meet with the raised area of the flashing.
Adjust the solar panel to the position it will collect the most sunlight throughout
the day. (The panel can be left in the down position.) To adjust the solar panel,
remove the (2) self-tapping screws on either side of the bracket. Lift up the solar
panel and line up the pre-drilled hole on the bracket arm to one of the two
pre-drilled holes on the “L” bracket attached to the housing. Re-attach the
(2) self tapping screws on both sides.
IMPORTANT: Prior to an anticipated hurricane or high wind event,
the solar panel must be secured with screws in the flat position.
NOTE: Some 10 watt panels may have a clip/screw assembly. To
adjust panel on these units, loosen, but do not remove, the assembly
located on each side of the solar panel bracket. Adjust the solar panel
to desired position and tighten screws (see inset).
This Tru-Lite Solar Attic Fan has a 25-year warranty
on the housing, the solar panel, and the motor.
IMPORTANT: PLEASE COMPLETE AND MAIL THE CARD BELOW AS SOON AS YOUR SOLAR ATTIC FAN
IS INSTALLED. This card will serve as proof of your purchase, should you misplace your original invoice.
The manufacturer warrants this product to be free from defects in material and manufacturer’s workmanship
for a period of 25 years on the motor, the solar panel and the housing, from the date of installation. This
warranty is subject to proper installation of the unit in accordance with the manufacturer’s written installation
instructions. The manufacturer will not be liable for any special, incidental or consequential damages in any
way related to, or arising out of, defects in, or damage to, the solar attic fan.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state
concerning exclusion or limitation of incidental or consequential damages.
To register your product please ll out the form below and mail it to:
Tru-Lite ● 10821 North 23rd Avenue ● Phoenix, AZ 85029
or visit www.tru-lite.com
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