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Mounting the Fan

Sizing Requirements

  

See sizing chart on the box or 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 feel free to call our customer service specialists at

 877-50-USSUN. 

Determine your mounting application

  

One of the great features about the All Purpose Ventilator is the many mounting options.

 

Gable Vent

Static or Turbine Vent

Crawlspace Vent

If you have a tile roof and do not want 

to cut into the tiles, use the gable vent  

for mounting the fan.

Rather than removing the static or 

turbine vent, simply use the same 

opening.

If your crawlspace has too much moisture, 

increase the airflow and reduce moisture 

by installing near a vent opening.

Important Tip:  

To maximize the solar fan’s effectiveness you should remove or block any rooftop 

static vents or ridge vents. 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. 

To maximize airflow to the attic close off any unused static vents. Use tar 

paper and staples as shown.

Before you begin:

 

Loosen (but do not remove) the 8 nuts 

(fig1) 

on the 4 mounting brackets 

(fig 2)

 so they can slide freely. 

And remember:

 

Always note the 

orientation of the fan’s air flow relative to the vent opening.

fig 2

fig 1

4 mounting brackets

Loosen

Gable Vent Installation

For installation in a gable vent you typically have 2 options: 

Step 1.

  

Position the fan over the louvers and slide the mounting 
brackets into position against the vent frame. 

(fig. 3)

  

Step 2.

  

Mark the position of the holes in the brackets and pre-drill 

if necessary. 

(fig. 4)

fig. 3

fig. 4

16” 

on center

Option 1 - vent is located between standard 16” on center framing members

Important tip for both gable fan installations:  

To maximize efficiency of the fan, seal off the gable vent area around the fan to avoid recirculating outside air 
around the fan and back outside.

seal off with tar 
paper or duct 
tape

Step 3.

  

Use included screws “G” to fasten the brackets to the vent frame. There are 8 positions two on 
each bracket. 

(fig. 5)

 

Step 4. 

 

Once brackets have been fastened, slide the fan assembly into position, pressing it firmly 

against the vent louvers and tighten the 8 nuts. 

(fig. 6)

fig. 5

fig. 6

Summary of Contents for All Purpose Ventilator

Page 1: ... Solar panel with 30 ft of attached wire C Wall mounting brackets 2 ea D Mounting bracket bolt and nut 4 ea E 1 5 screws for fan mounting 8 ea Some models include a thermal switch in the fan assembly Power drill with phillips head driver and an 1 8 drill bit Adjustable wrench Measuring tape tin snips or wire cutters for cutting hole in vent screen Circular saw or handsaw for cutting 2x4s for braci...

Page 2: ...on for every 600 sq ft of attic space To maximize airflow to the attic close off any unused static vents Use tar paper and staples as shown Before you begin Loosen but do not remove the 8 nuts fig1 on the 4 mounting brackets fig 2 so they can slide freely And remember Always note the orientation of the fan s air flow relative to the vent opening fig 2 fig 1 4 mounting brackets Loosen Gable Vent In...

Page 3: ...ot supplied fig 14 Step 2 Cut two 2x4 braces to the required length Step 1 Determine the location of the vent to be used and measure the distance between the two rafters fig 13 fig 17 To build the box frame Step 1 Depending on the distance your floor joist are seperated you will need to cut 4 braces two at 14 5 for the side braces one at 17 5 for the bottom brace and one between 17 5 and 25 5 for ...

Page 4: ...y hose off the solar panel between rain showers Step 3 Mount the base using four 3 galva nized screws making sure to seal the screw holes with a roof tile adhesive as shown Tilt the panel away from the base while installing the screws If the panel is to remain flat against the base when installed it is recommended that you allow the roof tile adhesive to completely dry before contacting with the p...

Page 5: ...h 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 39 As an upgrade from the mechanical thermal switch utilize the Solar Controller with an electronic thermostat and humi...

Page 6: ...ed defect If requested by Manufacturer purchaser shall ship the claimed defective component s to Manufacturer s principal place of business FOB destination freight prepaid for evaluation As to any product component determined by Manufacturer to contain a defect covered by its warranty Manufacturer reserves the right at its discretion to repair or replace the defective component or rebate a portion...

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