Carrier 50TC installation instructions Space Temperature Sensor Wiring

1	2	3	4	5	6	RED(+)
					WHT(GND)		CCN COM
						BLK(-)
			SEN
	SW1
					BRN (GND)		SENSOR WIRING
					BLU (SPT)

50TC				C08201
	Fig. 30 - T-55 Space Temperature Sensor Wiring
	Connect T-55 - See Fig. 30 for typical T-55 internal
	connections. Connect the T-55 SEN terminals to TB1
	terminals 1 and 3 (see Fig. 31).
			TB1	PL
	SEN	1		J6-7
	SEN	3		J6-6

C08212

Fig. 31 - PremierLink T-55 Sensor

Connect T-56 - See Fig. 32 for T-56 internal connections. Install a jumper between SEN and SET terminals as illustrated. Connect T-56 terminals to TB1 terminals 1, 3 and 5 (see Fig. 33).

1	2	3	4	5	6	RED(+)
					WHT(GND)		CCN COM
						BLK(-)
			SEN		SET
	SW1					BLK
						(T56)
					BRN (GND)		SENSOR WIRING
					BLU (SPT)
							JUMPER
							TERMINALS
							AS SHOWN

Cool Warm

C08202

Fig. 32 - T-56 Internal Connections

	TB1	PL
SEN	1	J6-7
	TB1	PL
SEN	3	J6-6

Jumper

SET

SET 5 J6-5

C08213

Fig. 33 - PremierLink T-56 Sensor

Connect Thermostat — A 7-wire thermostat connection requires a 24-v power source and a common connection. Use the R and C terminals on the CTB’s THERMOSTAT connection strip for these. Connect the thermostat’s Y1, Y2, W1, W2 and G terminals to PremierLink TB1 as shown in Fig. 34.

If the 50TC unit is equipped with factory-installed smoke detector(s), disconnect the factory BLU lead at TB1-6 (Y2) before connecting the thermostat. Identify the BLU lead originating at CTB-DDC-1; disconnect at TB1-6 and tape off. Confirm that the second BLU lead at TB1-6 remains connected to PremierLink J4-8.

SPACECTB

THERMOSTAT THERMOSTAT

R R

TB1PL

G 2 J4-12

Y1 4 J4-10

Y2 6 J4-8

W1 8 J4-6

W2 10 J4-4

C C CTB

THERMOSTAT

C08119

Fig. 34 - Space Thermostat Connections

If the 50TC unit has an economizer system and free-cooling operation is required, a sensor representing Return Air Temperature must also be connected (field-supplied and installed). This sensor may be a T-55 Space Sensor (see Fig. 29) installed in the space or in the return duct, or it may be sensor PNO 33ZCSENSAT, installed in the return duct. Connect this sensor to TB1-1 and TB1-3 per Fig. 31.

Configure the unit for Thermostat Mode — Connect to the CCN bus using a CCN service tool and navigate to PremierLink Configuration screen for Operating Mode. Default setting is Sensor Mode (value 1). Change the value to 0 to reconfigure the controller for Thermostat Mode.

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