A variable frequency drive connects to a low voltage manual reset differential pressure switch set at a specified water column value with a normally closed contact. The assembly includes an emergency stop circuit and ground connection. Building automation system integration occurs through a communication link.
BAS E E M N.C. LOW VOLTAGE MANUAL RESET LOW D.P. SWITCH SET AT X" W.C. VARIABLE FREQUENCY DRIVE GROUND BAS INTEGRATION THROUGH COMMUNICATION LINK EMERGENCY STOP
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