Greenheck Fan Grease Grabber H2O Auto-Cleaning Hood GGH20 - Manual (Page 9)

9 Model GGH2O
®
NOTE
For hoods with fire dampers in the exhaust and
supply duct collars, an access panel for cleaning
and inspection shall be provided in the duct. This
panel shall be as close to the hood as possible but
should not exceed 18 in. (45.72 cm).
SUPPLY PLENUM SHELL
HOOD FRONT
HANGING CLIP
2.120
1.000 147.0°
57.4°
1.000
1.000
Form Down 147°
Form Up 57
°
1.375 2.125 1.000
3.000
0.563
0.563
0.750
0.750
4.500
.500 x .375
SLOT (3 PLACES)
0.625
1.500
0.625
Supply Plenum Clip
Installing External Supply Plenums
Using the Supply Plenum Clip - Option #1
1. Bolt the hanging clip to the supply plenum. Two
clips are needed for plenums less than 96 in.
(243.84 cm) long and three for plenums greater
than 96 in. (243.84 cm). The
third clip is located in the
center of the plenum length.
If there is a utility cabinet,
the hanging clip should be
23.5 in. (59.69 cm) from the
end to the hood.
2. Using the c-clamps provided, clamp the supply
plenum hanging clip to the hood standing seam.
Option: Drill and bolt a 1/4-20 SS bolt through the
clip and hood standing seam.
NOTE
The supply plenum is provided with plenum clips
that assist in hanging the plenum. The plenum
should not be hung only with the plenum clips;
threaded rod or uni-strut must also be used.
Ductwork
Exhaust
As specified in NFPA 96, Ch. 7.5 (latest edition),
exhaust duct systems must be constructed in the
following manner:
Materials: Ducts shall be constructed of and
supported by carbon steel not less than 1.37 mm
(0.054 in.) (No. 16 MSG) in thickness or stainless steel
not less than 1.09 mm (0.043 in.) (No. 18 MSG)
in thickness.
Installation: All seams, joints, penetrations, and duct
to hood collar connections shall have a liquid-tight
external weld. If you have an Automatic Fire Damper
please refer to that manual for installation instructions
now.
Supply
Supply ductwork (where applicable) should be
connected to the hood in a manner approved by the
local code authorities.
For proper installation of duct collars when they are
shipped unattached see Installing Duct Collars on
page 10.
Hood
UTILITY
CABINET
TOP VIEW
HOOD
TOP VIEW
SUPPLY PLENUM
SUPPLY PLENUM SHELL
END VIEW
HOOD FRONT
Option #2
Uni-Strut supplied by others Option #3
Threaded Rod
supplied by others
Threaded Rod
‘C’ Clamp Hood Standing Seam
Hanging Clip bolted to plenum shell
Hanging Clip
Option #2
The uni-strut (U channel) that holds the hood up,
cantilevers over the end of the hood and is
mounted to the Air Curtain Supply Plenum (ASP)
hanger brackets
Option #1
For plenums < than or = 96 inches
Two (2) clips are needed.
For plenums > than 96 inches
Three (3) clips are needed.
The third clip is located in the
center of the plenum length.
Option #1
Attach hanging clip to hood
standing seam with the
supplied ‘C’ clamps.
Optional: Drill and bolt a
1/4-20 SS bolt through the
clip and hood standing seam
Option #1
Hanging clip could be 23.5 inches from end if there is a utility cabinet on the
end of the hood.
Option #1 : Hanging Clip
Hanger Bracket
Note: Supply plenums are standardly supplied with hanging clips (Option #1).
If Option #1 is not applicable, use Options #2 or #3
Hanging methods for supply plenums
ASP: Air Curtain Supply Plenum
FSP: Face Supply Plenum
VSP: Variable Supply Plenum
Option #1: Hanging Clip
Option #2: Uni-Strut
Option #3: Threaded Rod
11.5
23.5
Hood
UTILITY
CABINET
TOP VIEW
HOOD
TOP VIEW
SUPPLY PLENUM
SUPPLY PLENUM SHELL
END VIEW
HOOD FRONT
Option #2
Uni-Strut supplied by others Option #3
Threaded Rod
supplied by others
Threaded Rod
‘C’ Clamp Hood Standing Seam
Hanging Clip bolted to plenum shell
Hanging Clip
Option #2
The uni-strut (U channel) that holds the hood up,
cantilevers over the end of the hood and is
mounted to the Air Curtain Supply Plenum (ASP)
hanger brackets
Option #1
For plenums < than or = 96 inches
Two (2) clips are needed.
For plenums > than 96 inches
Three (3) clips are needed.
The third clip is located in the
center of the plenum length.
Option #1
Attach hanging clip to hood
standing seam with the
supplied ‘C’ clamps.
Optional: Drill and bolt a
1/4-20 SS bolt through the
clip and hood standing seam
Option #1
Hanging clip could be 23.5 inches from end if there is a utility cabinet on the
end of the hood.
Option #1 : Hanging Clip
Hanger Bracket
Note: Supply plenums are standardly supplied with hanging clips (Option #1).
If Option #1 is not applicable, use Options #2 or #3
Hanging methods for supply plenums
ASP: Air Curtain Supply Plenum
FSP: Face Supply Plenum
VSP: Variable Supply Plenum
Option #1: Hanging Clip
Option #2: Uni-Strut
Option #3: Threaded Rod
11.5
23.5