15
WALL THERMOSTAT
CONTROL (RC,RP)
Carrier’s wall thermostat control option includes:
• a standard chassis with front panel
• factory-installed low voltage controls for remote
thermostat operation
• indoor coil freeze protection
• user accessible selector switch for high or low fan
speed
Wall thermostat and wall thermostat wire must be
ordered separately.
See page 50 for a diagram of multiple PTAC units con-
trolled by a single thermostat.
NOTE: Be sure to connect reversing valve wiring to
the O connection of the thermostat for heat pump
applications.
NOTE: Do not use a power stealing digital thermostat
(common must be connected for digital thermostats).
CORROSION PROTECTION
(CP,RP)
To protect against the corrosive effects of a seacoast
environment, this option includes:
• a standard chassis with front panel
• special protections consisting of:
— painted control box and unit partitions
— pre-coated aluminum coils with copper tubing
— stainless steel tube sheets (outdoor coil)
— totally enclosed fan motor with moisture-
resistant windings
NOTE: All installations within one mile of the sea
coast or other corrosive environment must use Corro-
sion Protection (CP).
FACTORY-INSTALLED OPTIONS (52P AND 52C)
C
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W
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R
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O
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