Page 10
NOTE − When the furnace is installed on a platform in a
crawlspace, it must be elevated enough to avoid water
damage and to allow the evaporator coil to drain.
FIGURE 12
HORIZONTAL SUSPENSION KIT
Bracket
(typical)
Metal Strap
(typical)
Air
Flow
Internal Brace
(provided with kit)
Platform Installation of Horizontal Unit
1 − Select location for unit keeping in mind service and
other necessary clearances. See figure 11.
2 − Construct a raised wooden frame and cover frame
with a plywood sheet. If unit is installed above finished
space, fabricate an auxiliary drain pan to be installed
under unit. Set unit in drain pan as shown in figure 13.
Leave 8 inches for service clearance below unit for
condensate trap.
3 − Provide a service platform in front of unit. When instal-
ling the unit in a crawl space, a proper support platform
may be created using cement blocks.
4 − Route auxiliary drain line so that water draining from
this outlet will be easily noticed by the homeowner.
5 − If necessary, run the condensate line into a conden-
sate pump to meet drain line slope requirements. The
pump must be rated for use with condensing furnaces.
Protect the condensate discharge line from the pump
to the outside to avoid freezing.
6 − Continue with exhaust, condensate and intake piping
installation according to instructions.
FIGURE 13
*Gas connector may be
used for Canadian
installation if accept-
able by local authority
having jurisdiction.
*GAS CONNECTION
RAISED
PLATFORM
SERVICE PLATFORM
INTAKE PIPE
EXHAUST PIPE
Return Air −− Horizontal Applications
Return air must be brought in through the end of a furnace
installed in the horizontal position. The furnace is
equipped with a removable bottom panel to facilitate
installation. See figure 7.
Filters
This unit is not equipped with a filter or rack. A field−pro-
vided filter is required for the unit to operate properly. Table
1 lists recommended filter sizes.
A filter must be in place when the unit is operating.
NOTE
− In upflow applications where side return air fil-
ter is installed on same side as the condensate trap,
make sure that clearance is maintained to ensure fu-
ture access to the filter access panel.
TABLE 1
Furnace
Cabinet Width
Filter Size
Side Return
Bottom Return
B Cabinet (17−1/2")
16 X 25 X 1 (1)
16 X 25 X 1 (1)
C Cabinet (21−1/2")
16 X 25 X 1 (1)
16 X 25 X 1 (1)
D Cabinet (24−1/2")
16 X 25 X 1 (1)
16 X 25 X 1 (1)
