5. INSTALLATION
18" Roof Fan Mounting
The roof fan can be installed in the roof sheet before assembling the roof, or after the roof is assembled. Locate roof fan so that inner roof structure does not interfere with installation. The fan is secured by bolts that must be fastened from the inside of the bin roof, and therefore the assembly should be made before the side walls are erected.
1.Using the loose flange from the fan assembly as a template, position the desired roof fan location, allowing for 1" minimum between the roof sheet rib and the flange (See Figure 5A). Mark the sixteen (16), 3/8" mounting holes, and elliptical fan mounting hole.
2.Drill the sixteen (16), 3/8" holes and cut out the elliptical hole. Use the caulk provided, which is specified as a seal for metal sheets in an outdoor application, and apply along the in side edge of the drilled holes on the bin roof sheet (See Figure 5A).
Figure 5A The 18" Template Location on the Roof Sheet (Left), and
the Caulking Location on the Roof Sheet (Right).
3.Place the roof fan into the elliptical hole from the outside of the roof sheet inward. On the side of the roof sheet that will be inside the bin, position the loose mounting flange over the fan tube. Using the sixteen (16) 5/16" x 3/4" bin bolts with the neoprene washer head to the outside of the bin, secure the fan, roof sheet and flange with the 5/16" nuts provided.
Figure 5B The 18" Roof Exhauster Fan in Relation to the Roof Sheet.
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