Carrier 50PD05 Operating And Service Instructions page 50

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
SRRH 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 (CON) communication J3
EC.CP & Economizer actuator position MFT J7, 1
EC.AP (digital control) communication
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