18-CE12D1-1D-EN
19
Furnace General Installation
The following sections give general instructions for the
installation of the gas furnaces.
Note:
For S9X2 furnaces, use a 5/16” Allen wrench to turn the four
latches on the front panel a quarter turn.
Note:
For S9X1 and S9B1 furnaces, use a 1/4” nut driver to remove
the two screws on the front panel.
Horizontal Installation in an Attic
or Crawlspace
The S-Series upflow condensing furnace may be
installed in an attic or crawl space in the horizontal let
or right position for needed airflow direction. The
horizontal furnace installation in an attic should be on a
service platform large enough to allow for proper
clearances on all sides and service access to the front
of the furnace. See
. Line contact is only permissible
between lines formed by intersections of the top and
two sides of the furnace casing and building joists,
studs, or framing.
The furnace may be placed horizontally in a crawl
space on a pad or other noncombustible material
which will raise the unit for sufficient protection from
moisture.
The Furnace must be supported at both ends and the
middle when installed horizontally. The Furnace must
also be elevated approximately 6 inches to allow
clearance for the condensate drain to exit the cabinet in
the
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FURNACE MUST BE SUPPORTED AT ALL FOUR
CORNERS. BAYHANG - OPTIONAL HORIZONTAL
HANGING BRACKET KIT
Note: The overflow stand pipe termination must be even with or slightly below
the bottom of the condensate trap.
Note: Water from the overflow pipe must drain into the emergency drain pan.
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The furnace may be installed hanging in a hanging
position using straps. The furnace should be supported
at both ends and have an additional support in the
center of the furnace in front.
