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Using the UL Listed Fastener Provided
1. Drill a 9/32 in. hole for the 1/4 in. bolt from the
inside of the supply plenum to inside the hood.
Fasteners are to be located max. 6 in. (15.24 cm)
from the end of the hood with max. spacing
between bolts 36 in. (91.44 cm)
DO NOT
iNcluDe
uTiliTy
figuriNg
bOlT
placemeNT
DO NOT
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The
supply
.
cabiNeT
2. Push bolt through hole, attach the washer and nut.
3. Hand tighten; then use a wrench until fully
tightened. Caulk around bolts from inside of hood
as necessary.
1/4 - 20 UNC - 2A
SS Bolt
STEP 1
CENTERED ON WIDTH OF THE SUPPLY,
(IF MODULE > 6 ft.)
CUT (1) 4 in. X 24 in. OPENING AT
THE SUGGESTED LOCATION ABOVE
Installation instructions for the AC3 fastener:
Installing the Back Supply Plenum
Installing the Supply Duct Collar
1) Create a 9/32 in. hole for ºî bolt.
2) Install bolt through hole.
L (MODULE LENGTH)
L/4
1. Find the center of the back supply plenum.
3) Install appropriate washer (1/4 in.)
4) Install nut
2. If the back supply plenum is less than 9 ft. 10 in.
7) Hand tighten, then use a wrench until tightened.
STEP 1
L/2
(299.72 cm) long, cut opening at the suggested
(IF MODULE < 6 ft.)
location, centering the opening over the center of
the back supply plenum.
L (MODULE LENGTH)
L/2
CENTERED ON WIDTH OF THE SUPPLY,
CUT (2) 4 in. X 24 in. OPENINGS AT
THE SUGGESTED LOCATIONS ABOVE
CENTERED ON WIDTH OF THE SUPPLY,
CUT (1) 4 in. X 24 in. OPENING AT
THE SUGGESTED LOCATION ABOVE
®
STEP 1
(IF MODULE < 6 ft.)
cabiNeTs
Or
fillers
wheN
.
L (MODULE LENGTH)
/
pleNum
TO
a
fire
uTiliTy
L/2
L/2
Hood
1/4 inch SS Nut
SS Flat Washer
L/4
L/2
3. If the back supply plenum is greater than 9 ft.
10 in. (299.72 cm) long, divide the length of the
back supply by four. This will give you the center
of each half. Cut openings at the suggested
location, centering the duct collar over the center
measurement of each half.
L/4
Hole size 9/32-inch
4. Place the duct collar(s) over the opening, fastening
CENTERED ON WIDTH OF THE SUPPLY,
CUT (2) 4 in. X 24 in. OPENINGS AT
with screws or tack-welds every 4 to 6 in. (10.16 to
THE SUGGESTED LOCATIONS ABOVE
15.24 cm).
STEP 2
STEP 1
(IF MODULE > 6 ft.)
L (MODULE LENGTH)
L/4
PLACE THE DUCT COLLAR OVER THE OPENING,
Hanging the Back Supply Plenum
FASTEN WITH SCREWS, OR TACK WELDS EVERY
4 in. TO 6 in.
5. Hang the back supply plenum from the ceiling.
The back supply plenum needs to be mounted
31.25 in. (79.375 cm) above the floor (based
upon a canopy hood that will be hung at 78 in.
(198.12 cm) above the finished floor. This is
measured from the lowest rear edge of the back
supply plenum to the finished floor. Leave 6 to
10 inches (15.24 to 25.4 cm) of space below the
plenum for access to the air diffusers.
CENTERED ON WIDTH OF THE SUPPLY,
CUT (2) 4 in. X 24 in. OPENINGS AT
THE SUGGESTED LOCATIONS ABOVE
STEP 1
(IF MODULE > 6 ft.)
L (MODULE LENGTH)
L/2
L/4
The 4 in. (10.16 cm)
high duct collar is to
be attached to the
back supply.
L/2
L/4
Model GGH2O
PLAC
FASTE
4 in. T
PLACE THE DU
FASTEN WITH S
4 in. TO 6 in.
11
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