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.
Hood
1/4 - 20 UNC - 2A
SS Bolt
1/4 inch SS Nut
SS Flat Washer
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.
L (MODULE LENGTH)
L/2 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 | L (MODULE LENGTH) |
| |
| L/2 |
L/4
4.Place the duct collar(s) over the opening, fastening with screws or
The 4 in. (10.16 cm) high duct collar is to be attached to the back supply.
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.
®
Model GGH2O 11
