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FURNACE INSTALLATION
*TC series gas furnaces offer a wide range of installation
options, including installation in the upflow or horizontal
positions with either right, left, or upflow return air. The
*TL series gas furnaces may only be installed as a down
flow application.
General Requirements
• The furnace must be leveled at installation and attached
to a properly installed duct system. See Figure 1 (page 6)
for the required clearances needed to move the furnace
to its installation point (hallways, doorways, stairs, etc).
• The furnace must be installed so that all electrical
components are protected from water.
• The furnace must be installed upstream from a
refrigeration system. (If applicable)
• The cabinet plug must always be used to close the hole
in the side of the furnace when rotating the inducer.
• The furnace requires special venting materials and
installation procedures. See
venting guidelines and specifications.
Upflow Furnaces
WARNING:
The furnace must not be installed directly on
carpeting,tile,or any combustible material other
than wood flooring.
*TC series gas furnaces are shipped with the bottom
panel installed as shown in
installed with side return air, the bottom panel must not
be removed. If the furnace is installed with bottom return
air, the bottom panel must be removed. See Bottom Panel
Removal on
page
20.
Horizontal Furnaces
WARNING:
The furnace must not be installed directly on
carpeting,tile,or any combustible material other
than wood flooring.
The *TC series gas furnace can be installed horizontally
(Figure
11) in an attic, basement, crawl space or alcove.
It can also be suspended from a ceiling in a basement
or utility room in either a right to left airflow or left to right
airflow as shown in
Figure
*TC series furnaces are shipped with the bottom panel
installed. If furnace is installed horizontally, remove the
bottom panel from the furnace before attaching the duct
system. See Bottom Panel Removal section
16
pages 7
-
10
Figure
28. If the furnace is
12.
(page
20).
If installing the furnace in an attic, it is required that a drip
pan be placed under the furnace. If the installation is on
a combustible platform
that the drip pan extend at least 12 inches past the top
and front of the furnace.
If the furnace will be suspended from the ceiling, assemble
a support frame
(Figure
full threaded rod. Fasten the frame together with nuts,
washers, and lockwashers. Secure the support frame to
the rafters with lag bolts.
NOTE: The furnace can also be suspended using steel
straps around each end of the furnace. The straps should
be attached to the furnace with sheet metal screws and
to the rafters with bolts.
It is recommended for further reduction of fire hazard
that cement board or sheet metal be placed between the
furnace and the combustible floor and extend 12 inches
beyond the front of the door and top of the furnace.
for
Flue pipe vented
to outside
Coil Plenum
Condensate
Combustion Air
Drain Lines
Figure 11. *TC Horizontally Installed on a Platform
Threaded
Rod
Figure 12. *TC Horizontally Suspended in Attic
(Figure
11), it is recommended
12) using slotted iron channel and
Wood or
non-combustible
platform
J-Trap
Height
3" Min.
Nuts (x2)
Lag
Bolt
Washer
and
Lockwasher
Nuts (x2)
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