Greenheck Fan Grease Grabber H2O Auto-Cleaning Hood GGH20 - Manual (Page 11)

11 Model GGH2O
®
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 cabiNeTs Or fillers wheN
figuriNg bOlT placemeNT
.
DO NOT
bOlT The supply pleNum TO a fire
/
uTiliTy
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.
Hole size 9/32-inch
Installation instructions for the AC3 fastener:
1) Create a 9/32 in. hole for ºî bolt.
2) Install bolt through hole.
3) Install appropriate washer (1/4 in.)
4) Install nut
7) Hand tighten, then use a wrench until tightened.
Hood
1/4 - 20 UNC - 2A
SS Bolt
1/4 inch SS Nut
SS Flat Washer
L (MODULE LENGTH)
L/2
L/2
L/2
L (MODULE LENGTH)
L/4
L/4
STEP 1
CENTERED ON WIDTH OF THE SUPPLY,
CUT (2) 4 in. X 24 in. OPENINGS AT
THE SUGGESTED LOCATIONS ABOVE
(IF MODULE > 6 ft.)
THE SUGGESTED LOCATION ABOVE
CUT (1) 4 in. X 24 in. OPENING AT
CENTERED ON WIDTH OF THE SUPPLY,
(IF MODULE < 6 ft.)
STEP 1
4 in. TO 6 in.
FASTEN WITH SCREWS, OR TACK WELDS EVERY
PLACE THE DUCT COLLAR OVER THE OPENING,
STEP 2
The 4 in. (10.16 cm)
high duct collar is to
be attached to the
back supply.
L (MODULE LENGTH)
L/2
L/2
L/2
L (MODULE LENGTH)
L/4
L/4
STEP 1
CENTERED ON WIDTH OF THE SUPPLY,
CUT (2) 4 in. X 24 in. OPENINGS AT
THE SUGGESTED LOCATIONS ABOVE
(IF MODULE > 6 ft.)
THE SUGGESTED LOCATION ABOVE
CUT (1) 4 in. X 24 in. OPENING AT
CENTERED ON WIDTH OF THE SUPPLY,
(IF MODULE < 6 ft.)
STEP 1
4 in. TO 6 in.
FASTEN WITH SCREWS, OR TACK WELDS EVERY
PLACE THE DUCT COLLAR OVER THE OPENING,
STEP 2
L (MODULE LENGTH)
L/2
L/2
L/2
L (MODULE LENGTH)
L/4
L/4
STEP 1
CENTERED ON WIDTH OF THE SUPPLY,
CUT (2) 4 in. X 24 in. OPENINGS AT
THE SUGGESTED LOCATIONS ABOVE
(IF MODULE > 6 ft.)
THE SUGGESTED LOCATION ABOVE
CUT (1) 4 in. X 24 in. OPENING AT
CENTERED ON WIDTH OF THE SUPPLY,
(IF MODULE < 6 ft.)
STEP 1
4 in. TO 6 in.
FASTEN WITH SCREWS, OR TACK WELDS EVERY
PLACE THE DUCT COLLAR OVER THE OPENING,
STEP 2
Installing the Back Supply Plenum
Installing the Supply Duct Collar
1. Find the center of the back supply plenum.
2. If the back supply plenum is less than 9 ft. 10 in.
(299.72 cm) long, cut opening at the suggested
location, centering the opening over the center of
the back supply plenum.
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.
4. Place the duct collar(s) over the opening, fastening
with screws or tack-welds every 4 to 6 in. (10.16 to
15.24 cm).
Hanging the Back Supply Plenum
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.