Lennox International Inc EL180UHE installation instructions Setting Equipment, Upflow Applications

Setting Equipment

WARNING

Do not install the furnace on its front or its back. Do not connect the return air ducts to the back of the fur­ nace. Doing so will adversely affect the operation of the safety control devices, which could result in per­ sonal injury or death.

The EL180UHE gas furnace can be installed as shipped in either the upflow position or the horizontal position. Select a location that allows for the required clearances that are listed on the unit nameplate. Also consider gas supply connections, electrical supply, vent connection, and installation and service clearances [24 inches (610

mm)at unit front]. The unit must be level.

NOTE - Units with 1/2 or 3/4 hp blower motors are equipped with three flexible legs and one rigid leg. See figure 6. The rigid leg is equipped with a shipping bolt and a flat white plastic washer (rather than the rubber mounting grommet used with a flexible mounting leg). The bolt and washer

must be removed before the furnace is placed into op­

eration. After the bolt and washer have been removed, the

rigid leg will not touch the blower housing.

Units with 1/2 or 3/4 HP Blower Motor

RIGID LEG

remove shipping bolt and washer

FIGURE 6

Upflow Applications

Allow for clearances to combustible materials as indicated on the unit nameplate. Minimum clearances for closet or al­ cove installations are shown in figure 7.

Upflow Application Installation Clearances

	Top
Left Side		Right Side
	Bottom
Type of Vent	Type C	Type B1
Connector
Top	1 in. (25 mm)	1 in. (25 mm)

*Front	2-1/4 in. (57 mm)**	2-1/4 in. (57 mm)
Back	0	0
Sides	0†	0
Vent	6 in. (152 mm)	1 in. (25 mm)
Floor	0‡	0‡

*Front clearance in alcove installation must be 24 in. (610 mm). Maintain a minimum of 24 in. (610 mm) for front service access. ** 4-1/2” if single wall vent pipe is used.

‡For installation on a combustible floor, do not install the furnace directly on carpeting, tile or other combustible materials other than wood flooring.

†Left side requires 3 inches if a single wall vent is used on 14-1/2 inch cabinets, or 2 inches if a single wall vent pipe is used on 17-1/2 inch cabinets.

FIGURE 7

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