Carrier 48PG03-16 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 104

DISPLAY NAME
INPUTS INPUTS
RM.OC
ENTH or
IAQ.S
IAQ
OAQ or
SP .RH
OUTPUTS
PE.1
PE.2
EC.CP or EC.AP Economizer actuator (analog, digital)
COMMUNICATION COMMUNICATION
EC.CP and EC.AP Economizer actuator (digital control)
Fig. 30 --- Economizer Control Board (ECB)
Table 103—ECB Connections
POINT DESCRIPTION
Input power from MBB
Remote occupancy switch
Outdoor enthalpy switch, or
Indoor air quality switch
Indoor air quality sensor
Outdoor air quality sensor, or
Space humidity sensor
Power exhaust 2 relay
Power exhaust 2 relay
Local Equipment Network (LEN)
SENSOR LOCATION TYPE OF I/O
control box
field installed switch input
economizer switch input
space or return
space or return
economizer
space
communication
communication
104
C07027
CONNECTION
PIN NUMBER
24 VAC J1, 1-2
J4, 2-3
J4, 4-3
4-20 mA J5, 2-3
4-20 mA J5, 5-3
relay J8, 3
relay J8, 6
4-20 mA J9, 1
J2, 1-3
J7, 1-3