Carrier 58CTA Installation, Start-Up, Operating And Service And Maintenance Instructions page 4

gas. This furnace is not approved for installation in mobile
homes, recreational vehicles, or outdoors.
These furnaces shall not be installed directly on carpeting, tile, or
any other combustible material other than wood flooring. For
downflow installations, a factory accessory floor base must be
used when installed on combustible materials and wood flooring.
This special base is not required when this furnace is installed on
the manufacturer's coil assembly, or when the manufacturer's coil
box is used. See Fig. 2 for clearance to combustible material
information.
This furnace is designed for minimum continuous return- -air
temperature of 60_F (16_C) db or intermittent operation down to
55_F (13_C) db such as when used with a night setback
thermostat. Return- -air temperature must not exceed 80_F (27_C)
db. Failure to follow these return- -air temperature limits may
affect reliability of heat exchangers, motors, and controls. (See
Fig. 3.)
For accessory installation details, refer to the applicable
instruction literature.
NOTE:
operating the furnace.
Fig. 2 - - Clearances to Combustibles
4
Remove all shipping brackets and materials before
A10269