Return Air Temperature; Minimum Clearances To Combustible Materials - Carrier 59SC2A Product Data

This furnace is designed for continuous return- -air minimum temperature of 60_F (15_C) db or intermittent operation down to 55_F (13_C)
db such as when used with a night setback thermometer. Return- -air temperature must not exceed 80_F (27_C) db. Failure to follow these
return air limits may affect reliability of heat exchangers, motors and controls.

MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS

Front (Combustion air openings in furnace and in structure)
Required for service
All Sides of Supply Plenum
Top of Furnace
* Recommended
COMBUSTION- - AIR PIPE FOR NON- -DIRECT (1- -PIPE) VENT APPLICATION

RETURN AIR TEMPERATURE

SUPPLY AIR
POSITION
Rear
Sides
Vent
FIELD-SUPPLIED
2-IN. (51 mm) DIA.
TIGHT RADIUS
PVC 90° ELBOW
FIELD-SUPPLIED
2-IN. (51 mm) DIA.
PVC PIPE
12" (300 mm) Minimum
11
80 / 27˚C
60
/ 16˚C
CLEARANCE
0 (0 mm)
1 in. (25 mm)
*24 in. (610 mm)
1 in. (25 mm)
0 (0 mm)
0 (0 mm)
1 in. (25 mm)
A10490
A11487