142
Table 95 — Economizer Control Board (EXB) Inputs and Outputs
POINT NAME POINT DESCRIPTION TYPE OF I/O I/O POINT NAME
CONTROL
BOARD
CONNECTOR
PIN NO.
INPUTS
PPS Plenum Press. Safety Sw. Switch Input DI1 EXB J4, 1-2
UVCSTS UV-C Lamp Status Switch Input DI2 EXB J4, 3-4
SACFM Supply Air CFM Transducer (4-20mA) AN1 EXB J5, 1-3
RACFM Return Air CRM Transducer (4-20mA) AN2 EXB J5, 4-6
OUTPUTS
MMV_B Motor Master VFD B 4-20mA AO1 EXB J9, 1-2
CMPA1CAP Compressor A1 Solenoid Digital PP/MP EXB J7, 1-3
HUMIDRLY Humidifier Relay Relay RLY1 EXB J8, 1-3
SFBYRLY Supply Fan Bypass Relay Relay RLY2 EXB J8, 4-6
PEBYRLY PE/Ret. Fan Bypass Relay Relay RLY3 EXB J8, 7-9
UVC_LAMP UV-C Lamp Relay RLY6 EXB J8, 16-18
Fig. 35 — Economizer Control Board (EXB) and Rooftop Control Board (RXB)
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