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PLUMBING AND COMPRESSOR PROTECTION COMPONENTS
EVAPORATOR COIL
CONDENSER COIL
DRIER
COMPRESSOR
RETURN AIR
SECTION
INDOOR
BLOWER
SECTION
EXPANSION
VALVE
HEAT
SECTION
S5
S87
S4
FIGURE 5
4-Thermistors
Units are equipped with four factory-installed thermistors
on the refrigerant circuit.
The thermistors provide the Unit Controller with constant
-
frigeration circuit. These temperatures are used as feed-
back in certain modes of unit operation. In addition, the
Unit Controller uses these temperatures to initiate alarms
of charge.
operation and to initiate valid alarms. See table 1 for prop-
er locations.
TABLE 1
THERMISTOR LOCATION
Unit RT42 & RT46 RT44 & RT48
036U, 048U Figure 6
Figure 8
060U, 074U Figure 7
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