Greenheck Fan PN 458294 manual Installing the Back Supply Plenum, Hanging the Back Supply Plenum

Installing the Back Supply Plenum

Installing the Supply Duct Collar
1.	Find the center of the Back Supply Plenum.	L (MODULE WIDTH)
2.	If the Back Supply Plenum is less than 9 ft. 10 in. (299.72 cm) long,		L/2
	cut opening at the suggested location, centering the opening over	L/2
	the center of the Back Supply Plenum. (Fig. 9)

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. (Fig. 10)

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). (Fig. 11)

		Fig. 9
		• The 4 in. (10.16 cm)
	L (MODULE WIDTH)	high duct collar is to be
L/4		attached to the back
	L/2	supply.
		L/2
Fig. 10		Fig. 11

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 finished floor. This is measured from the lowest rear edge of the Back Supply Plenum to the finished floor.

6.Fasten the Back Supply to the wall, going through the lower Back Supply wall. (Fig. 12)

• These fasteners are to help maintain the location of the Back Supply and are not intended to hold the weight of the Back Supply Unit.

•The fasteners should not interfere with the removable air diffusers.

FASTENERS HOLDING THE

BACK SUPPLY TO THE WALL

32 in. (813 mm)

CRITICAL

DIMENSION

Fig. 12

Proximity Hood

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