Carrier 48/50PG Series Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 78

DISPLAY POINT DESCRIPTION
NAME
Input power from MBB
RM.OC Remote occupancy switch
ENTH or Outdoor enthalpy switch, or
IAQ.S Indoor air quality switch
IAQ Indoor air quality sensor
OAQ or Outdoor air quality sensor, or
SP .RH Relative humidity sensor
Sensor Common
Actuator Common
Output power to enthalpy switch
Output power for loop power sensors
Output power to economizer actuator
PE.1 Power exhaust 1 relay
PE.2 Power exhaust 2 relay
EC.CP or Commanded Economizer position or
F.SPD Commanded Fan Speed
Local Equipment Network (LEN)
Carrier Comfort Network (CCN)
EC.CP & Economizer actuator position
EC.AP (digital control)
Table 24 – ECB Connections
SENSOR
LOCATION
INPUTS
control box
field installed
economizer, or
return/space
return/space
field installed
OUTPUTS
COMMUNICATION
78
TYPE OF I/O CONNECTION
PIN NUMBER
24 VAC J1, 1--- 2
switch input J4, 2
switch input J4, 4
0--- 20 mA J5, 2
0--- 20 mA J5, 5
Ground J5, 3
Ground J7, 3
24 VAC J4, 3
24 VDC J5, 1
24 VAC J7, 2
relay J8, 3
relay J8, 6
0--- 20 mA J9, 1
communication J2, 1--- 3
communication
MFT J7, 1
communication
J3