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Installation − 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.
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,
condensate trap and drain connections, and installation
and service clearances [24 inches (610 mm) at unit
front]. The unit must be level from front to back and side
to side.
The unit may be tilted slightly (maximum 1/2 in.) from
back to front to aid in the draining of the heat exchanger.
See figure 7.
NOTE − G61MPV−36B and −36C units with 1/2 hp blower
motors are equipped with three flexible legs and one rigid
leg. 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 operation. After the bolt and washer have been re-
moved, the rigid leg will not touch the blower housing.
NOTE − G61MPV−60D−135 units are equipped with a ship-
ping pad under the blower housing. Remove the shipping
pad prior to operation.
Allow for clearances to combustible materials as indicated
on the unit nameplate. Minimum clearances for closet or al-
cove installations are shown in figures 8, 13 and 17.
WARNING
Blower access panel must be securely in place when
blower and burners are operating. Gas fumes, which
could contain carbon monoxide, can be drawn into
living space resulting in personal injury or death.
FIGURE 7
SETTING EQUIPMENT
UPFLOW APPLICATION DOWNFLOW APPLICATION
HORIZONTAL APPLICATION
FRONT VIEW
SIDE VIEW
FRONT VIEW
END VIEW
FRONT VIEW
SIDE VIEW
AIR FLOW
AIR FLOW
AIR FLOW
UNIT
FRONT
AIR FLOW
AIR FLOW
UNIT
FRONT
UNIT
FRONT
1/2"
max.
1/2"
max.
1/2"
max.
UNIT MUST BE LEVEL SIDE−TO−SIDE IN ALL APPLICATIONS.
UNIT SHOULD BE LEVEL FROM LEFT TO RIGHT BUT MAY BE
TILTED SLIGHTLY (MAX. 1/2") FROM BACK TO FRONT
TO AID IN THE DRAINING OF THE HEAT EXCHANGER.
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