Page 9
COOLING COIL
PLENUM
PROPERLY
SIZED FLOOR
OPENING
Figure 8
Return Air Opening -- Downow Units
The following steps should be taken when installing ple-
num:
1 -
.
SECURE FROM
OUTSIDE CABINET
HEMMED EDGE
PLENUM
SEALING STRIP
(Field Provided)
CABINET SIDE PANEL
Side View
Figure 9
2 - Sealing strip should be used.
of furnace with sheet metal screws.
SIDE CABINET
HEMMED EDGE
FIBERGLASS
SEALING STRIP
(Field Provided)
CABINET SIDE
PANEL
PLENUM
Side View
Figure 10
4 - In closet installations, it may be impossible to install
sheet metal screws from the outside. In this case,
make plenum with a removable front and install
5 - Make certain that an adequate seal is made.
Setting Equipment
WARNING
Do not install the furnace on its front, back or in the
return air ducts to the back of the furnace. Doing so
devices, which could result in personal injury or death.
Install the ML180DFE gas furnace as shipped in the
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 and 3/4 hp blower motors are
equipped with three exible legs and one rigid leg. See g-
ure 11. The rigid leg is equipped with a shipping bolt and a
at white plastic washer (rather than the rubber mounting
grommet used with a exible mounting leg). The bolt and
washer must be removed before the furnace is placed
into operation. After the bolt and washer have been re-
moved, the rigid leg will not touch the blower housing.
RIGID LEG
remove shipping bolt and washe
Units with 1/2 or 3/4 HP Blower Motor
Figure 11
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 injury or death.
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