507762-01
Issue 1907
Page 9 of 46
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.
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.
WARNING
Upflow Applications
The 95G1UHEX gas furnace can be installed as shipped
in the upflow position. Refer to Figure 11 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 12.
Allow for clearances to combustible materials as indicated
on the unit nameplate.
Improper installation of the furnace can result in
personal injury or death. Combustion and flue products
must never be allowed to enter the return air system or
air in the living space. Use sheet metal screws and joint
tape to seal return air system to furnace.
In platform installations with furnace return, the furnace
should be sealed airtight to the return air plenum. A door
must never be used as a portion of the return air duct
system. The base must provide a stable support and an
airtight seal to the furnace. Allow absolutely no sagging,
cracks, gaps, etc.
For no reason should return and supply air duct systems
ever be connected to or from other heating devices
such as a fireplace or stove, etc. Fire, explosion, carbon
monoxide poisoning, personal injury and/or property
damage could result.
WARNING
Top
Bottom (Floor)
Left Side
Right Side
Top / Plenum
1 in. (25 mm)
* Front
1 in. (25 mm)
Back
1 in. (25 mm)
Sides
1 in. (25 mm)†
Vent
1 in. (25 mm)
Floor
0 in. ‡
* Front clearance in alcove installation must be 24 in. (610
mm). Maintain a minimum of 24 in. (610 mm) for front
service access.
† Allow proper clearances to accommodate condensate trap.
‡ For installations on a combustible floor, do not install the
furnace directly on carpeting, tile or other combustible
materials other than wood flooring.
Figure 11. Installation Clearances
Upflow Applications
Return Air Guidelines
Return air can be brought in through the bottom or either
side of the furnace installed in an upflow application. If the
furnace is installed on a platform with bottom return, make
an airtight seal between the bottom of the furnace and the
platform to ensure that the furnace operates properly and
safely. The furnace is equipped with a removable bottom
panel to facilitate installation.
Markings are provided on both sides of the furnace cabinet
for installations that require side return air. Cut the furnace
cabinet at the maximum dimensions shown on Page 2.
Refer to Engineering Handbook for additional information.
95G1UHEX applications which include side return air
and a condensate trap installed on the same side of the
cabinet (trap can be installed remotely within 5 ft.) require
either a return air base or field-fabricated transition to
accommodate an optional IAQ accessory taller than 14.5”.
Содержание 95G1UH040BE12X
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