Carrier 48LC 04 Controls, Start-Up, Operation And Troubleshooting page 52

DISPLAY NAME POINT DESCRIPTION
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 Commanded Economizer position
Local Equipment Network (LEN)
Carrier Comfort Network (CCN)
EC.CP & Economizer actuator position
EC.AP (digital control)
Table 17 – Economizer Control Board (ECB) Connections
INPUTS
OUTPUTS
COMMUNICATION
SENSOR
TYPE OF I/O
LOCATION
control box 24 VAC
field installed switch input
economizer, or
switch input
return/space
return/space 0--- 20 mA
field installed 0--- 20 mA
Ground
Ground
24 VAC
24 VDC
24 VAC
0--- 20 mA
communication
communication
MFT communication
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CONNECTION
PIN NUMBER
J1, 1--- 2
J4, 2
J4, 4
J5, 2
J5, 5
J5, 3
J7, 3
J4, 3
J5, 1
J7, 2
relay J8, 3
relay J8, 6
J9, 1
J2, 1--- 3
J3
J7, 1