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SEQUENCE OF OPERATION <br /> DUCT STATIC PRESSURE SENSOR AND CONTROL THE DUMP DAMPERS AS FOLLOWS: FAN FAILURE ALARM: (CRITICAL ALARM) <br /> A.THERE ARE 3 ZONES. ZONE 1 HAS 2 CROSS FLOW DAMPERS. ZONE 2 HAS 2 CROSS FLOW DAMPERS. THERE ARE 3 FANS EACH WITH ITS OWN VFD. EMCS SHALL GENERATE AN ALARM IF THE FAN VFD IS <br /> ZONE 3 HAS 3 CROSS FLOW DAMPERS. COMMANDED ON AND ITS STATUS IS NOT AVAILABLE FOR MORE THAN 60 SECONDS. IF THERE IS A MISS <br /> B.ALL ZONE DAMPER ACTUATORS ARE SET AS NORMALLY OPEN. MATCH OF COMMAND VERSUS STATUS, THEN THE UNIT SHALL BE SHUT DOWN UNTIL IT IS MANUALLY RESET <br /> C.WHEN THERE IS A LARGE DECREASE IN CFM DEMAND AS JACK IN THE BOXES ARE TURNED OFF OR AN FROM EBI AND A CRITICAL ALARM SHALL BE GENERATED AT EBI. <br /> OBSTRUCTION OCCURS, ZONE 3 DAMPERS WILL MODULATE OPEN TO RELEAVE PRESSURE IN THE FORM <br /> OF EXCESS CFM IN THE DUCT UNIT THE SUPPLY FAN PID LOOP OR STAGE DOWN SEQUENCE CAN REACT. JACK IN THE BOX ALARMS: <br /> IF THERE IS STILL A NEED TO RELEAVE PRESSURE IN THE FORM OF EXCESS CFM WHEN ZONE 3 THE EMCS WILL MONITOR THE FOLLOWING ALARMS IN EACH JACK IN THE BOX: <br /> DAMPERS ARE ALL THE WAY OPEN THEN MODULATE OPEN ZONE 2 DAMPERS. IF THERE IS STILL A NEED A.LOW FLOW ALARM: IF THE FLOW OF ANY JACK IN THE BOX SELECTED TO RUN IS LESS THAN 450 CFM <br /> TO RELEAVE PRESSURE IN THE FORM OF EXCESS CFM WHEN ZONE 3 AND 2 DAMPERS ARE ALL THE (ADJ.) WITH A DELAY OF 5 MIN (ADJ.) GENERATE AN ALARM. <br /> WAY OPEN THEN MODULATE OPEN ZONE 1 DAMPERS. B.NO FLOW ALARM: IF THE FLOW OF ANY JACK IN THE BOX SELECTED TO RUN IS LESS THAN 50 CFM <br /> (ADJ.) AND ITS DAMPER IS OPEN TO 100% WITH A DELAY OF 2 MIN (ADJ.) GENERATE A CRITICAL ALARM. <br /> 1.COOLING CONTROL C.HIGH DISCHARGE TEMPERATURE ALARM: IF THE DISCHARGE TEMPERATURE IS GREATER THAN 75 DEGF <br /> A.WHEN AIRFLOW, AS MEASURED BY THE FAN PIEZOMETERS, IS LESS THAN 3,500 CFM, MAIN COIL BYPASS WITH A DELAY OF 5 MIN (ADJ.) GENERATE AN ALARM. <br /> DAMPER AND MAIN CHILLED WATER CONTROL VALVE (V-1) SHALL BE FULLY CLOSED. SECONDARY D.CPO—RL5 COMUNICATION FAILURE: IF A JACK IN THE BOX CPO—RL5 CONTROLLER FAILS TO COMMUNICATE <br /> CHILLED WATER CONTROL VALVE (V-2) SHALL MODULATE TO MAINTAIN THE DISCHARGE AIR TEMPERATURE GENERATE A CRITICAL ALARM. <br /> SETPOINT FOR THE SELECTED MODE. <br /> B.WHEN AIRFLOW IS GREATER THAN 3,500 CFM (ADJ), MAIN COIL BYPASS DAMPER SHALL OPEN AND THE <br /> MAIN COOLING COIL CONTROL VALVE (V-1) AND SECONDARY CHILLED WATER CONTROL VALVE (V-2) <br /> SHALL MODULATE TO MAINTAIN THE DISCHARGE AIR TEMPERATURE SETPOINT FOR THE SELECTED MODE. <br /> 2.OPERATOR PUSH BUTTON STATION <br /> A CENTRALIZED CONTROL PANEL THAT HOSTS ALL OF THE OPERATOR CONTROL POINTS TO OPERATE THE <br /> SYSTEM. IT WOULD INCLUDE: <br /> 1.MODE SWITCH <br /> A.OFF MODE (BLACK PB, WHITE LED) <br /> B.VENT/MAINTENANCE MODE (GREEN PB, GREEN LED) <br /> C.AUTOMATION MODE (GREEN PB, GREEN LED) <br /> D.ENTRY/SEAL MODE (GREEN PB, GREEN LED) <br /> 2.INDICATOR LIGHT FOR EACH ACTIVE MODE AND ZONE <br /> 3.TROUBLE LIGHT (YELLOW LED) <br /> A.NON—SYSTEM FAIL LIGHT THAT INDICATES NOT MAINTAINING PROPER AIRFLOW AND OR SPACE <br /> TEMPERATURE. <br /> 4.FAULT LIGHT (RED LED) <br /> A.UNIT IS FAULTED OFF AND CANNOT RUN. <br /> 5.SYSTEM RESET PUSH BUTTON <br /> 3.SAFETY SHUTDOWN AND ALARMS <br /> HIGHT DUCT STATIC PRESSURE ALARM PRESSURE ALARM: (CRITICAL ALARM) <br /> HIGH DUCT STATIC PRESSURE SWITCH WILL SHUTDOWN THE SUPPLY FANS AND ALARM THE EMCS IF DUCT <br /> STATIC PRESSURE EXCEED X" WC (ADJ.). HARDWIRE INTERLOCK IS DONE TO THE FAN VFD. <br /> MOTOR OVERLOAD PROTECTION ALARM: (CRITICAL ALARM) <br /> EMCS SHALL MONITOR THE MOTOR OVERLOAD FAULT FROM THE VFDS WITH A DELAY OF 60 SECONDS. <br /> DISCHARGE AIR TEMPERATURE ALARM: <br /> EMCS SHALL GENERATE A DISCHARGE AIR TEMPERATURE ALARM IF ANY SELECTED OUTLET OF DISCHARGE AIR <br /> IS GREATER THAN 75 DEGF SETPOINT FOR MORE THAN 5 MINUTES. <br /> SUPPLY AIR FLOW ALARM: <br /> EMCS SHALL GENERATE AN ALARM IF THE SUPPLY FLOW IS DEVIATING 10% FROM THE CURRENT SUPPLY AIR <br /> FLOW SETPOINT FOR MORE THAN 30 MINUTES. <br /> DAMPER FAILURE ALARM: (CRITICAL ALARM) <br /> IF ANY DUMP DAMPER IS COMMANDED AND FEEDBACK IS MORE THAN 10% OFF FROM COMMAND THEN <br /> GENERATE AN ALARM. <br /> rn REIM fff ATWRD WE sw mom N MTWM WE ACCEPTABILITY SB ,,u.24 �""` PANELEMCS-40-023-F1G5-CP1 "" "`" '°" g"e0L "°` 11.25.24 <br /> 40-023 BUILDING-HBL EOMSION-POS 4,5,6 USB-027992 HWL vs 11.2524 �''ND TM 11.25.24 AHU-6L SEQUENCE OF OPERATION 2 OF 2 SHM <br /> BOE�/Vc° APPROYM BY DEPT. DATE =B ,, 2+ n"` 40-023 BUILDING E932-2B <br /> TM 1 14 BUILDING 40-023 <br /> JOB W. car N0. <br /> ELECTRICAL MASTER EVERE T,WA'B' 40-023—E932-2B <br />