U.S. Sunlight 9912TR Solar Powered Attic Fan - Manual (Page 3)

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 vis-
ible 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.
fig. 9
Maintenance Tip: The solar panel is most effective when clean and free of dust, leaves, and
debris. Normally, rainwater will cleanse the solar panel and keep it operating at peak efficiency.
If necessary, simply hose off the solar panel between rain showers.
Adjusting the Fan
Step 9 – Adjustments
The fan’s solar panel should be adjusted to maximize exposure to the sun’s path during the
day. The optimal adjustment is to have the panel 90 degrees to the midday path of the sun.
You can re-adjust the panel during winter or summer seasons if desired. (fig. 10)
To adjust the tilt of the panel
Remove screw “A” on both sides of the panel assembly and set aside. (fig. 11) Lift the panel and swing panel braces up
to desired position and re-attach screw “A” in the appropriate holes. There are 3 positions to choose from. (fig. 12)
To adjust the rotation of the panel
Loosen nut “B” (there are four) (fig. 12), then rotate the panel base to the desired position (fig. 13) and re-tighten the
nuts. The panel base can be rotated up to 360 degrees by completely removing nuts “B”, lifting the assembly off the
bolts and re-positioning accordingly. Re-attach the nuts and tighten when completed.
The sun’s path
at midday.
fig. 10
fig. 11 fig. 12 fig. 13 fig. 14
re-attach
screw A
Screw A
Nut B
Additional Accessory Available
The Solar Controller ™ has a built in thermostat and humidistat that will measure the attic
temperature and humidity and allow the fan to have extend run time in the evenings or
when no solar is available. Visit www.ussunlight.com for additional information.
™
Thermal Switch - Optional Installation
The thermal switch will shut down the fan when the temperature drops below approximately 65˚F
and turn the fan back on when the attic temperature rises to approximately 80˚F. To install the
thermal switch, remove the BLACK lead from the fan motor and attach it to the thermal switch. Attach
the other lead from the thermal switch to the BLACK terminal on the motor. Secure the wires to the
motor bracket with tape or zip ties to prevent them from interfering with the fan blade. If you prefer
to have the fan running during cooler seasons to remove moisture from the attic, do not install the
thermal switch (fig. 15). As an upgrade from the mechanical thermal switch, utilize the Solar
Controller with an electronic thermostat and humidistate as well as additional features.
thermal switch
red lead
(leave as is)
black lead from thermal switch
connected to black terminal on motor
original black lead from motor
fig. 15
This solar fan will automatically start whenever the sun shines on the solar panel. Always exercise caution when in the vicinity of the fan.
To avoid accidents, use appropriate attire: safety glasses, gloves, hard hats, restraints and other appropriate equipment.
Use this product only as indicated by U.S. Sunlight Corp. Any questions on appropriate applications, call 1-877-50-USSUN.
Installation work and electrical wiring must be done in accordance with all applicable building codes and standards, including fire
requirements, by qualified person(s).
To prevent back drafting of any fuel burning equipment in the attic such as a gas furnace, sufficient air is needed for proper combustion
and exhausting of gases through the flue of fuel burning equipment. Follow the requirements made by the heating unit’s manufacturer.
Additionally, follow safety standards set fort by the National Fire Protection Association (NFPA), and the American Society for Heating,
Refrigeration and Air Conditioning Engineers (ASHRAE), and the local code authorities.