Grain Systems Bin Accessories PNEG-1790 - Manual (Page 26)

26 PNEG-1790 10K and 20K Peak Capacity 50 PSF Ground Snow 90' Roof Assembly
4. Roof Exhauster Placement
Figure 4A below and Figure 4B on Page 27 shown is the recommended roof exhauster placement on the
90'-10K and 20K-50 PSF ground snow roof. Two (2) Z-shape reinforcement pieces (CRP-6447) are sent
with the 90' roof for each exhauster. The reinforcement piece should be placed a minimum of 12" above
the intermediate “Z” collar (CRP-4821) as shown in
Figure 4B on Page 27 for side view detail.
The second from the top hole of the roof exhauster support angle should be line up with the top
Z-reinforcement. The Z-reinforcement should be bolted to the roof beam and bolted to the exhauster
support angles. Two (2) holes will need to be drilled through the roof beams and Z-reinforcement to
attach with 5/16" hardware. A 3/8" diameter hole should be drilled through the roof panel and into the top
Z-reinforcement on each side of the exhauster housing. The exhauster should be fastened with 5/16"
hardware. Next the lower Z-reinforcement should be placed under the lowest hole on the roof exhauster
support angle. The Z-reinforcement should be bolted to the roof beam and bolted to the exhauster support
angles as specified above. A 3/8" diameter hole should be drilled through the roof panel and into the
bottom Z-reinforcement on each side of the exhauster housing. The exhauster should be fastened with
5/16" hardware. NOTE: Caulking will be needed at any locations of drilling or cutting of the roof panels.
Also included is tubing for bracing the roof exhauster housing to the roof panels. Bracing angle and
location is determined by the installer. Care needs to be taken not to interfere with any other equipment
on the roof.
Figure 4A Roof Exhauster Detail - Top View
Upper “Z” collar
(CRP-7017)
Intermediate
“Z” collar
(CRP-4821)
Drill 3/8" hole in beam flange
and attach with 5/16" hardware. Drill 3/8" hole in beam flange
and attach with 5/16" hardware.
NOTE: Roof panels and roof exhauster not shown for
clarity. See side view
on Page 27 for CRP-6447 and
roof exhauster placement.
NOTE: See roof exhauster manual (PNEG-524) for
detailed assembly instructions, shown here are
135' roof exhauster placement recommendations.