Page 9
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 EL280UH 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 hp blower motors are equipped with
three flexible legs and one rigid leg. See figure 7. 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 opera-
tion.
After the bolt and washer have been removed, the rig-
id leg will not touch the blower housing.
FIGURE 7
RIGID LEG
remove shipping bolt and washer
EL280UH090P48B and
EL280UH110P48C with 1/2 HP
BLOWER MOTOR
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 8.
Upflow Application Installation Clearances
Top
Bottom
Left Side
Right Side
Type of Vent
Connector
Type C
Type B1
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 in. 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
in. cabinets, or 2inches if a single wall vent pipe is used on 17−1/2
in. cabinets.
FIGURE 8
