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Furnace Installation; General Requirements; Upfl Ow Installation; Side Return Air Inlet - Maytag *TC Installation Instructions Manual

Two-stage condensing gas furnaces with fixed & variable speed blowers - 95.1 % afue.
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FURNACE INSTALLATION

*TC series gas furnaces offer a wide range of installation
options, including installation in the upfl ow or horizontal
positions with either right, left, or upfl ow return air. The
*TL series gas furnaces may only be installed as a down
fl ow application.

General Requirements

• The furnace must be leveled at installation and attached
to a properly installed duct system. See Table 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 pages 10 -14 for venting
guidelines and specifi cations.
Upfl ow Installation
WARNING:
The furnace must not be installed directly on
carpeting, tile, or any combustible material other
than wood fl ooring.

Side Return Air Inlet

*TC series gas furnaces are shipped with the bottom panel
installed (Figure 29). If the upfl ow furnace is installed using
both side return air inlets, the bottom panel must not be
removed. The bottom panel must be in place if the bottom
of the furnace is not being used as a return.

Bottom Return Air Inlet

If the *TC series gas furnace is installed using the bottom
as a return air inlet and 1 side return, the bottom panel
(Figure 29) must be removed.
Downfl ow Installation
WARNING:
The furnace must not be installed directly on
carpeting, tile, or any combustible material other
than wood fl ooring.
WARNING:
Failure to install the downfl ow sub-base kit may
result in fi re, property damage or personal injury.
To install the furnace on combustible fl ooring, a special
sub-base is required. Downfl ow sub-base kits are factory
supplied accessories and are listed according to the cabinet
16
letter of the furnace. For 'B', 'C', and 'D' size cabinets use
Kit #904911. Please follow the instructions provided
with the kit.
A downfl ow sub-base kit is not necessary if the furnace
is installed on a factory or site-built cased air conditioning
coil. However, the plenum attached to the coil casing
must be installed so that its surfaces are at least 1" from
combustible construction.

Installation on a concrete slab

1. Create an opening in the fl oor according to the
dimensions in Figure 10.
2. Position the plenum and the furnace as shown in
Figure 11.
Opening in concrete floor
"B"
Cabinet Size
B
C
D
NOTE: Dimensions shown in Inches.
Figure 10. Cutout Dimensions
Concrete
Floor
Figure 11. Furnace on a Concrete Slab

Horizontal Installation

WARNING:
The furnace must not be installed directly on
carpeting, tile, or any combustible material other
than wood fl ooring.
The *TC series gas furnace can be installed horizontally
(Figure 12, page 17) 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 airfl ow or
left to right airfl ow as shown in Figure 13.
"A"
Dim. "A" Dim. "B"
16 5/8
19 1/4
20 1/8
19 1/4
23 5/8
19 1/4
Furnace
Sheet
Metal
Plenum

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