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EQUIPMENT IN CONFINED SPACE - ALL AIR FROM OUTSIDE
(All Air Through Ventilated Attic)
ROOF TERMINATED
EXHAUST PIPE
OUTLET
AIR
SIDE WALL
FURNACE
TERMINATED
EXHAUST PIPE
(ALTERNATE
LOCATION)
NOTE-The inlet and outlet air openings shall each have a free area of
at least one square inch per 4,000 Btu (645mm
of the total input rating of all equipment in the enclosure.
Figure 8
EQUIPMENT IN CONFINED SPACE -
ALL AIR FROM OUTSIDE
ROOF TERMINATED
EXHAUST PIPE
SIDE WALL
TERMINATED
EXHAUST PIPE
(ALTERNATE
LOCATION)
NOTE-Each air duct opening shall have a free area of at least one
square inch per 2,000 Btu (645mm
input rating of all equipment in the enclosure. If the equipment room
cate directly with the outdoors, each opening shall have a free area
of at least 1 square inch per 4,000 Btu (645mm
hour of the total input rating of all other equipment in the enclosure.
Figure 9
Shipping Bolt Removal
Units with 1/2 hp blower motor 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). See Figure 10.
VENTILATION LOUVERS
(Each end of attic)
INLET AIR
(Ends 12" above
bottom)
2
per 1.17kW) per hour
OUTLET AIR
FURNACE
INLET AIR
2
per .59kW) per hour of the total
2
per 1.17kW) per
The bolt and washer must be removed before the furnace
is placed into operation. After the bolt and washer have
been removed, the rigid leg will not touch the blower hous-
ing.
Installation - Setting Equipment
Do not connect the return air duct to the back of the
furnace. Doing so will adversely affect the operation of
the safety control devices, which could result in personal
injury or death.
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.
The EL297UHV gas furnace can be installed as shipped
in the upflow position. Refer to Figure 12 for clearances.
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 side to side. The unit may
be positioned from level to ½" toward the front. See
Figure 11.
Allow for clearances to combustible materials as indicated
on the unit nameplate.
Page 8
UNITS WITH 1/2 HP
BLOWER MOTOR
RIGID LEG
remove shipping bolt and washer
Figure 10
WARNING
WARNING
Upflow Applications
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