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Bard Solid State Dual Unit Lead/Lag Controller MC4000 User Manual

Page 33

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Manual

2100-563C

Page

33 of 40

FIGURE 16

ALARM BOARD CONNECTIONS

FOR NORMALLY OPEN "NO" CLOSE-ON-ALARM STRATEGY

IMPORTANT! LED display board is shipped loose to protect it from possible damage during
installation of the wiring to main controller board and/or the alarm board. It is polarity sensitive
and is keyed so it can only be installed in correct position.

Note 1: 2nd Stage, Econ 1, Econ 2, High Temp 2 and Controller alarms are only on -B alarm board.
All other alarms are on both -A and -B alarm boards.