Page 9
Setting Equipment
WARNING
Do not install the furnace on its front, back or in the
horizontal position. See figure 8. Do not connect the
return air ducts to the back of the furnace. Doing so
will adversely affect the operation of the safety con-
trol devices, which could result in personal injury or
death.
Install the 80AF1DF gas furnace as shipped in the down-
flow position only.
Do not install the furnace hori-
zontally.
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
1/2 HP Blower Motor
WARNING
The blower access panel must be securely in place
when the blower and burners are operating. Gas
fumes, which could contain carbon monoxide, can
be drawn into living space resulting in personal inju-
ry or death.
FIGURE 8
Front
Back
Horizontal