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Step 3—Installation in Horizontal Applications
UNIT MAY NOT OPERATE
Failure to follow this caution may result in intermittent
unit operation.
The entire length of furnace MUST be supported when
furnace is used in a horizontal position to ensure proper
draining. When suspended, bottom brace supports sides and
center blower shelf. When unit is supported from the ground,
blocks or pad should support sides and center blower
shelf area.
CAUTION
!
These furnaces can be installed horizontally in either horizontal
left or right discharge position. In a crawlspace, furnace can
either be hung from floor joist or installed on suitable blocks or
pad. Furnace can be suspended from each corner by hanger bolts
and angle iron supports. (See Fig. 25.) Cut hanger bolts (4 each
3/8-in. all-thread rod) to desired length. Use 1 X 3/8-in. flat
washers, 3/8-in. lock washers, and 3/8-in. nuts on hanger rods as
shown in Fig. 25. Dimples are provided for hole locations.
(See Fig. 2.)
PLENUM
OPENING
C
A
B
D
FLOOR
OPENING
A96283
Fig. 21 -- Floor and Plenum Opening Dimensions
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
FURNACE
(OR COIL CASING
WHEN USED)
COMBUSTIBLE
FLOORING
A96285
Fig. 22 -- Furnace, Plenum, and Subbase
Installed on a Combustible Floor
CD5 OR CK5
COIL ASSEMBLY
OR KCAKC
COIL BOX
FURNACE
SHEET METAL
PLENUM
FLOOR
OPENING
COMBUSTIBLE
FLOORING
A96284
Fig. 23 -- Furnace, Plenum, and Coil Assembly or Coil Box
Installed on a Combustible Floor