Section 1, System Description - System Connectivity
61186003L1-1D 1-21
Environmental Alarm Inputs
Wire-wrap posts provide environmental alarm inputs for ACO, AUX1, AUX2, AUX3A and
AUX3B alarms.
For ACO, AUX1, AUX2, and AUX3A, alarms are activated when the circuit between the
connecting posts is closed (a short appears across the line).
For AUX3B, an alarm is activated by a cadenced input across the input posts; this input can
be used to indicate a fan failure.
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