Carrier 50HCQA Space Sensor Mode, Thermostat Mode, TB1 TERMINAL, Field Connection, Input Signal

Table 4 – Space Sensor Mode

TB1 TERMINAL				FIELD CONNECTION		INPUT SIGNAL
	1			T55---SEN/T56---SEN		Analog (10k thermistor)
	2			RMTOCC		Discrete, 24VAC
	3			T55---SEN/T56---SEN		Analog (10k thermistor)
	4			CMPSAFE		Discrete, 24VAC
	5			T56---SET		Analog (10k thermistor)
	6			FSD		Discrete, 24VAC
	7			LOOP---PWR		Analog, 24VDC
	8			SPS		Discrete, 24VAC
	9			IAQ ---SEN		Analog, 4---20mA
	10			FILTER		Discrete, 24VAC
	11		IAQ ---COM/OAQ ---COM/RH ---COM			Analog, 4---20mA
	12			CCN + (RED)		Digital, , 5VDC
	13			OAQ ---SEN/RH ---SEN		Analog, 4---20mA
	14			CCN Gnd (WHT)		Digital, 5VDC
	15			AUX OUT(Power Exhaust)		(Output)Discrete 24VAC
	16			CCN --- (BLK)		Digital, 5VDC
LEGEND:
T55	---	Space Temperature Sensor			FSD ---	Fire Shutdown
T56	---	Space Temperature Sensor			IAQ ---	Indoor Air Quality (CO2)
CCN	---	Carrier Comfort Network (communication bus)			OAQ --- Outdoor Air Quality (CO2)
CMPSAFE	---	Compressor Safety			RH ---	Relative Humidity
FILTER	---	Dirty Filter Switch			SFS ---	Supply Fan Status

Table 5 – Thermostat Mode

50HCQA

TB1 TERMINAL	FIELD CONNECTION
1	RAT SEN
2	G
3	RAT SEN
4	Y1
5
6	Y2
7	LOOP---PWR
8	W1
9	IAQ ---SEN
10	W2
11	IAQ ---COM/OAQ ---COM/RH ---COM
12	CCN + (RED)
13	OAQ ---SEN/RH ---SEN
14	CCN Gnd (WHT)
15	AUX OUT (Power Exhaust)
16	CCN --- (BLK)

INPUT SIGNAL

Analog (10k thermistor)

Discrete, 24VAC

Analog (10k thermistor)

Discrete, 24VAC

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

LEGEND:
CCN	---	Carrier Comfort Network (communication bus)	RH	--- Relative Humidity
G	---	Thermostat Fan	W1	--- Thermostat Heat Stage 1
IAQ	---	Indoor Air Quality (CO2)	W2	--- Thermostat Heat Stage 2
OAQ	---	Outdoor Air Quality (CO2)	Y1	--- Thermostat Cool Stage 1
RAT	---	Return Air Temperature	Y2	--- Thermostat Cool Stage 2

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