SUPPLY AIR CONNECTIONS
For a furnace not equipped with a cooling coil, the outlet duct shall
be provided with a removable access panel. This opening shall be
accessible when the furnace is installed and shall be of such a size
that the heat exchanger can be viewed for possible openings using
light assistance or a probe can be inserted for sampling the air
stream. The cover attachment shall prevent leaks.
Upflow and Horizontal Furnaces
Connect supply-air duct to flange on furnace supply-air outlet.
Bend flange upward to 90° with wide duct pliers. The supply-air
duct attachment must ONLY be connected to furnace supply-
outlet-air duct flanges or air conditioning coil casing (when used).
DO NOT cut main furnace casing to attach supply side air duct,
humidifier, or other accessories. All accessories MUST be con-
nected external to furnace main casing.
→ Fig. 15—Horizontal Unit Suspension
A02345
1
/4" THREADED ROD
4 REQ.
SECURE ANGLE
IRON TO BOTTOM
OF FURNACE WITH
3 #8 x
3
/4" SCREWS
TYPICAL FOR 2 SUPPORTS
1" SQUARE, 1
1
/4" x 1
1
/4" x
1
/4" ANGLE IRON
OR UNI-STRUT MAY BE USED
(2) HEX NUTS, (2) WASHERS & (2) LOCK WASHERS
REQ. PER ROD
8" MIN FOR DOOR
REMOVAL
OUTER DOOR
ASSEMBLY
Fig. 16—Horizontal Suspension with Straps
A02014
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