Carrier 50HCQA User Manual page 21

TB1 TERMINAL
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LEGEND:
T55 --- Space Temperature Sensor
T56 --- Space Temperature Sensor
CCN --- Carrier Comfort Network (communication bus)
CMPSAFE --- Compressor Safety
FILTER --- Dirty Filter Switch
TB1 TERMINAL
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LEGEND:
CCN --- Carrier Comfort Network (communication bus)
G --- Thermostat Fan
IAQ --- Indoor Air Quality (CO
OAQ --- Outdoor Air Quality (CO
RAT --- Return Air Temperature
Table 4 – Space Sensor Mode
FIELD CONNECTION
T55---SEN/T56---SEN
RMTOCC
T55---SEN/T56---SEN
CMPSAFE
T56---SET
FSD
LOOP---PWR
SPS
IAQ ---SEN
FILTER
IAQ ---COM/OAQ ---COM/RH ---COM
CCN + (RED)
OAQ ---SEN/RH ---SEN
CCN Gnd (WHT)
AUX OUT(Power Exhaust)
CCN --- (BLK)
Table 5 – Thermostat Mode
FIELD CONNECTION
RAT SEN
G
RAT SEN
Y1
Y2
LOOP---PWR
W1
IAQ ---SEN
W2
IAQ ---COM/OAQ ---COM/RH ---COM
CCN + (RED)
OAQ ---SEN/RH ---SEN
CCN Gnd (WHT)
AUX OUT (Power Exhaust)
CCN --- (BLK)
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INPUT SIGNAL
Analog (10k thermistor)
Discrete, 24VAC
Analog (10k thermistor)
Discrete, 24VAC
Analog (10k thermistor)
Discrete, 24VAC
Analog, 24VDC
Discrete, 24VAC
Analog, 4---20mA
Discrete, 24VAC
Analog, 4---20mA
Digital, , 5VDC
Analog, 4---20mA
Digital, 5VDC
(Output)Discrete 24VAC
Digital, 5VDC
FSD --- Fire Shutdown
IAQ --- Indoor Air Quality (CO
OAQ --- Outdoor Air Quality (CO
RH --- Relative Humidity
SFS --- Supply Fan Status
Analog (10k thermistor)
Analog (10k thermistor)
(Output) Discrete 24VAC
RH --- Relative Humidity
W1 --- Thermostat Heat Stage 1
W2 --- Thermostat Heat Stage 2
Y1 --- Thermostat Cool Stage 1
Y2 --- Thermostat Cool Stage 2
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INPUT SIGNAL
Discrete, 24VAC
Discrete, 24VAC
Discrete, 24VAC
Analog, 24VDC
Discrete, 24VAC
Analog, 4---20mA
Discrete, 24VAC
Analog, 4---20mA
Digital, 5VDC
Analog, 4---20mA
Digital, 5VDC
Digital, 5VDC