Specifications

L-
m
RED LED
STATUS
GREEN LED-LEN
(LOCAL EQUIPMENT NETWORK)
Fig. 23 -- Economizer Control Board (ECB)
Table 54 -- ECB Connections
DISPLAY NAME POINT DESCRIPTION SENSOR LOCATION TYPE OF I/O CONNECTION
PIN NUMBER
INPUTS
Input power from MBB control box 24 VAC J1, !-2
RMOC Remote occupancy switch field installed switch input J4, 2-3
ENTH or Outdoor enthalpy switch, or economizer
IAQS Indoor air quality switch space or return switch input J4, 4-3
IAQ Indoor air quality sensor space or return 4-20 mA J5, 2-3
OAQ or Outdoor air quality sensor, or economizer
SRRH Space humidity sensor space 4-20 mA J5, 4-3
OUTPUTS
PE.1 Power exhaust 2 relay relay J8, 3
PE.2 Power exhaust 2 relay relay J8, 6
EC.CP or EC.AP Economizer actuator (analog, digital) 4-20 mA J9, 1
COMMUNICATION
Local Equipment Network (LEN) communication J2, 1-3
EC.CP and EC.AP Economizer actuator (digital control) communication J7, !-3
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