Bottom Return Air Applications

If return air is to terminate through the floor under the fur- nace, a direct, airtight and sealed connection must be made to the bottom of the furnace,

1 - Cut opening in floor or platform. Using knockouts provided, cut bottom of base panel. See figure 2.

KNOCKOUT PATTERN FOR BOTTOM

RETURN AIR APPLICATION

Bottom Return Air Applications

1 - Remove blower access panel.

2- Install filter clips, provided with unit, by slipping

folded section of clip on edge of bottom opening. See figure 4.

3 - Place filter in bottom of blower compartment beneath

rear filter clip. Press down on filter sides. Filter clips flex allowing filter to snap into place.

4 - To remove filter, press clip and pull filter up and out.

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iV	Vd
_

FIGURE 2

2 - Bend a flange on return air plenum and lower into floor or platform opening, See figure 3.

3 - Position unit over return air opening. Seal unit air tight with return air plenum•

BOTTOM RETURN AIR APPLICATION

G32 UNIT

RETURN AIR

PLENUM

PROPERLY

SIZED FLOOR

OPENING

FIGURE 3

NOTE - Be cerefu/ not to damage insulation. Check for

tight seal,

BOTTOM RETURN FILTER INSTALLATION

REAR FILT R CLIP

URNACE

BACK

SIDE _

FURNACEFURNACE

FIGURE 4

Side Return Air Applications

Filter racks are available from Lennox for side return air applications.See figures 5 and 6.

NOTE - The filter doormay be shipped in the rack behind the filter./fnecessa_ remove the filter, retrieve the door and continuewith the installationof the rack.

1 - Align filter rack opening with the inside edge of the side return opening. Bottom of rack should be approximately 1 inch(25 mm) from the bottom and 3 inches (76 mm) from the front of the unit.

2- Screw filter rack intoplace with the eightselfddll,self tap screws provided.See figure 5.

3 - Push filter door pins through the two holes in filter door from the inside of the u-channel. See figure 6.

Side Return Air Applications

For installations where the return air is taken fl'oma retum

air drop, unitmay be installed with mtum air entl_ through either the left or right side of the furnace.

SIDE RETURN FILTER INSTALLATION in.(turn)

BLOWER DECK _=

For side returnair applications,cut furnace cabinetat the

dimensionsgiven on page 2. Embossedcomers are pro- vided on bothcabinet sidesfor returnair opening location.

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			RETURN AIR
			PLENUM			SIZE
RETURN	12 in. (305)	for	12-314 In	X 23-1/2 In			(324 X
AIR	14 in. 13561 Filter		597) for	14	In (356)		Filter
OPENING	t8 In. (437)	for	18-3/4 In.		x	23-1/2	In,
	20 in, (508)	Filter	(476		x	507)
			for 20 In.		1508) Filter

This unit is not equipped with a filteror rack. A field-pro-vided high-velocityfilteris requiredfor the unit to operate properly.A filter must be in place any time the unit is operating. The unit does include filter clips for instal-

lation of a field-provided, internally installed filter.

See figure 4.

1-13/t6in.

cAa,NETBASEI; .OM,I (34)

FIGURE 5

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