Table of Contents
Advertisement
58SU0A: Installation, Start-up, Operating and Service and Maintenance Instructions
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
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.
Downflow Furnaces
Connect supply-air duct to supply-air outlet on furnace. Bend flange
inward past 90° with wide duct pliers, see
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.
UPFLOW/
HORIZONTAL
Fig. 14 – Duct Flanges
OUTER DOOR
ASSEMBLY
8" (203mm) MIN
FOR DOOR REMOVAL
(2) HEX NUTS, (2) WASHERS & (2) LOCK WASHERS
REQ. PER ROD
Fig. 15 – Horizontal Unit Suspension
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Fig.
14. The supply-air
Fig.
14. The supply-air duct
DOWNFLOW
A190346
1
" (6mm) THREADED ROD
/
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
A10130
Fig. 16 – Horizontal Suspension with Straps
Fig. 17 – Typical Attic Installation
Return Air Connections
!
FIRE HAZARD
Failure to follow this warning could cause personal injury, death and/or
property damage.
Never connect return-air ducts to the back of the furnace. Follow
instructions below
Downflow Furnaces
The return-air duct must be connected to return-air opening (bottom
inlet) as shown in
Fig.
20. DO NOT cut into casing sides (left or right).
Side opening is permitted for only upflow and most horizontal furnaces,
see
Fig.
20. Bypass humidifier connections should be made at ductwork
or coil casing sides exterior to furnace.
Upflow and Horizontal Furnaces
The return-air duct must be connected to bottom, sides (left or right), or a
combination of bottom and side(s) of main furnace casing as shown in
Fig. 19
and
Fig.
21. Bypass humidifier may be attached into unused
return air side of the furnace casing, see
11
METHOD 2
USE (4) #8 x 3/4 (19 mm) SHEET
METAL SCREWS FOR EACH
STRAP. THE STRAPS
SHOULD BE VERTICAL
AGAINST THE FURNACE
SIDES AND NOT PULL AWAY
FROM THE FURNACE
SIDES.
METHOD 1
FOLD ALL STRAPS UNDER
FURNACE AND SECURE WTH
(4) #8 x 3/4 (19 mm) SHEET METAL SCREWS
(2 SCREWS IN SIDE AND 2 SCREWS
IN BOTTOM).
WARNING
Fig. 19
and
Fig.
21.
A10131
A180240
Advertisement
Table of Contents
