Upblast Centrifugal Roof Exhaust
6
Grease Trap Installation
The polypropylene grease trap is designed to collect
grease residue and avoid drainage onto roof surface.
Follow all local codes, as well as the National Fire
Protection Agency (NFPA) where applicable.
NFPA 96:
Upblast fans shall have a drain directed to a
readily accessible and visible grease receptacle not to
exceed 1 gal.
(3.8L)
Refer to Document 476370
- Grease Trap Installation,
Operation and Maintenance Manual for parts list and
specific installation instructions.
Grease Trap Maintenance
Regular inspection of grease trap is recommended.
Depending on the amount of grease discharged through
the fan, the grease trap should be cleaned regularly to
ensure proper operation.
• Check grease absorber (if included) every month.
Replace grease absorber after every cleaning and/
or as needed between cleanings.
• Replacement grease absorbers (P/N 476084) can
be ordered from your local representative.
Hinge Installation
NFPA 96:
Upblast exhaust fans shall be supplied with a
hinge.
Refer to listed Installation, Operation and
Maintenance Manuals
for parts list and specific
installation instructions:
Document 481937
-
Sidewall Mount Hinge Kit
Document 481366
-
Bracket Hinge Kit
Document 462865/462866
-
Hinge Kit
Fan to Curb Mounting:
5/16-inch
(7.9 mm)
self-drilling
fasteners are to be installed on each side of fan with
one fastener 4-inches
(102 mm)
from each edge and
one fastener in the center, Figure 9. Fasteners are to be
equally spaced.
Mounting for Severe Duty Installation
Optional Hinged Base Mounting:
For installations
that include the optional hinged base accessory, the
fan must be secured to the hinged base and curb using
the correct number of fasteners as shown in the “Fan to
Curb Mounting” section. All fasteners must be installed
through the curb cap of the fan, the hinged base, and
the curb. All fasteners must be reinstalled after each
time the fan is hinged open, see Figure 10.
IMPORTANT
Only qualified installers should perform this work.
Manufacturer assumes no liability for damages
resulting from installation.
Installation instructions for seismic ratings are only
recommendations. Final design must be determined
by Structural Engineer of Record (SEOR) including
requirements for curb construction, mounting of unit
to curb and mounting of curb to structure.
Fan Size
Fasteners
per Side
≤ 161
3
180 to 240
5
≥ 300
9
Unit
1¼ in.
1¼ in.
Curb Corner
Anchor Detail
Roof Curb
Model GPF, GPFHL,
GPFHD or Equivalent
18 ga. min.
High Wind Ratings
42 in. Tall Max
Seismic Ratings
24 in. Tall Max
Welded Steel Construction
Figure 9 - Fan to Curb Mounting
All fasteners
must penetrate
curb and must
be reinstalled
after each
service.
Figure 10 - Fasteners
