Carrier 48/50PD05 ECB Connections, Display, Point Description, Sensor, Type Of I/O, Name, Outputs

48/50PD

Table 20 — ECB Connections

DISPLAY	POINT DESCRIPTION		SENSOR	TYPE OF I/O	CONNECTION
NAME			LOCATION		PIN NUMBER
			INPUTS
	Input power from MBB		control box	24 VAC	J1, 1---2
RM.OC	Remote occupancy switch		field installed	switch input	J4, 2
ENTH or	Outdoor enthalpy switch, or		economizer, or	switch input	J4, 4
IAQ.S	Indoor air quality switch		return/space
IAQ	Indoor air quality sensor		return/space	0---20 mA	J5, 2
OAQ or	Outdoor air quality sensor, or		field installed	0---20 mA	J5, 5
SP.RH	Relative humidity sensor
	Sensor Common			Ground	J5, 3
	Actuator Common			Ground	J7, 3
		OUTPUTS
	Output power to enthalpy switch			24 VAC	J4, 3
	Output power for loop power sensors			24 VDC	J5, 1
	Output power to economizer actuator			24 VAC	J7, 2
PE.1	Power exhaust 1 relay			relay	J8, 3
PE.2	Power exhaust 2 relay			relay	J8, 6
EC.CP	Commanded Economizer position			0---20 mA	J9, 1
		COMMUNICATION
	Local Equipment Network (LEN)			communication	J2, 1---3
	Carrier Comfort Network (CCN)			communication	J3
EC.CP &	Economizer actuator position			MFT	J7, 1
EC.AP	(digital control)			communication

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