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Upflow and Horizontal Furnaces
Connect supply- -air duct to flanges on furnace supply- -air outlet.
Bend flange upward to 90_ with wide duct pliers. (See Fig. 14.)
The supply- -air duct must be connected to ONLY the furnace
supply- -outlet- -air duct flanges or air conditioning coil casing
(when used). DO NOT cut main furnace casing side to attach
supply air duct, humidifier, or other accessories. All accessories
MUST be connected to duct external to furnace main casing.
NOTE: For horizontal applications, the top- -most flange may be
bent past 90 degrees to allow the evaporator coil to hang on the
flange temporarily while the remaining attachment and sealing of
the coil are performed.
UPFLOW
90
120
MIN
OUTER DOOR
A S SEMBLY
8" (203mm) MIN
FOR DOOR REMOVAL
(2) HEX NUTS, (2) WASHERS & (2) LOCK WASHERS
REQ. PER ROD
Downflow Furnaces
Connect supply- -air duct to supply- -air outlet on furnace. Bend
flange inward past 90_ with wide duct pliers. (See Fig. 14.) The
supply- -air duct must be connected to ONLY the furnace supply
outlet or air conditioning coil casing (when used). When installed
on combustible material, supply- -air duct must be connected to
ONLY the factory- -approved accessory subbase or a factory- -
approved air conditioning coil casing. DO NOT cut main furnace
casing to attach supply side air duct, humidifier, or other
accessories. All accessories MUST be connected to duct external
to furnace casing.
DOWNFLOW
YES
YES
120
MIN
NO
Fig. 14 - - Duct Flanges
Fig. 15 - - Horizontal Unit Suspension
14
HORIZONTAL
90
YES
YES
120
MIN
NO
" (6mm) THREADED ROD
1
/
4
4 REQ.
SECURE ANGLE
IRON TO BOTTOM
OF FURNACE WITH
3 #8 x
3
/
" (19mm) SCREWS
4
TYPICAL FOR 2 SUPPORTS
1" (25mm) SQUARE, 1-1/4"x1-1/4"x1/8" (32x32x3mm)
ANGLE IRON OR UNI-STRUT MAY BE USED
YES
YES
NO
A02020
A10130
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