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ELEVATOR MACHINE ROOM AIR CONDITIONING UNIT: ACU-X <br /> UNIT START/STOP <br /> THE EMCS SYSTEM SHALL START/STOP THE AIR CONDITIONING UNIT (ACU) ON ITS OWN "OCCUPIED/UNOCCUPIED" <br />' SCHEDULE. <br /> TEMPERATURE CONTROL <br /> THE EMCS SYSTEM SHALL INDICATE THE COOLING AND HEATING SPACE TEMPERATURES TO THE ACU. THE <br /> EMCS SHALL MONITOR THE SPACE TEMPERATURE AND INITIATE AN ALARM WHEN THE SPACE TEMPERATURE '. <br /> EXCEEDS 90 DEG F (ADJUSTABLE). <br /> THE EMCS SHALL MONITOR THE STATUS OF ELECTRIC HEAT IN THE ACU, <br />, ECONOMIZER CONTROL <br /> WHEN THE OUTDOOR ENTHALPY CONTROLLED CALLS FOR ECONOMY COOLING, THE ACTUATOR SHALL <br /> MODULATE (OR OPEN-100%) THE DAMPER TO INTRODUCE OUTSIDE AIR INTO THE SPACE BASED ON (FACTORY <br /> PRESET 55 DEG F (ADJUSTABLE)) MIXED AIR TEMPERATURE. WHEN THE OUTSIDE AIR ENTHALPY CONDITIONS ARE <br /> NOT FAVORABLE FOR ECONOMY COOLING, THE ACTUATOR DAMPER SHALL CLOSE, THE EMCS SHALL MONITOR <br /> THAT STATUS OF OUTSIDE AIR DAMPER. . <br /> AIR FILTERS <br /> THE EMCS PANEL SHALL MONITOR THE DIFFERENTIAL PRESSURE SWITCH ACROSS THE FILTER AND SHALL <br /> PROVIDE AN ALARM WHEN THE PRESSURE DROP EXCEEDS THE SETPOINT. <br />� FIRE STAT DETECTION <br /> THE FIRE STAT IN THE AIR STREAM SHALL PROVIDE A"HARD-WIRED" SHUTDOWN OF THE ENTIRE ACU AND <br /> INITIATE AN ALARM TO THE EMCS. RESTARTING THE ACU SHALL REQUIRE MANUAL RESET. <br /> � <br /> 900 SW 16th Street Suite 307 FSi consulting engineers <br /> SHEET INCLUDED FOR REFERENCE ONLY Renton, Washington 98057 Solutions & Service <br /> � <br /> ACCEPTABILITY DRAWN DATE SUBTITLE CURRENT REVISION SYMBOL DATE <br /> SYM REVISION BY APPROVED DATE SYM REVISION BY APPROVED oATE NJH 08/01/17 CONTROLS SEQUENCE OF OPERATION � <br /> W2548317 08/01/17 � <br /> Q � W• ( THIS DESIGN AND/OR CHECKED o <br /> � q�Y RED 08/01/17 SHEET <br /> 4 �"�,, SPECIFICATION IS APPROVED � <br /> � �t��' '�'r ENGINEER TI7LE I� <br /> BOE,��� 2 y Z APPROVED BY DEPT. DATE BSC O$/O'II�7 Boeing 777X CWC BUILDING o , <br /> CHECKED M 1 h 1 N <br /> ��� 4,T,0 ��� BUILDING 40-58 ' � <br /> fSSioHa� ENG� APPROVED JOB NO. COMP N0. � <br /> Ap rover 40-58-M1h.1 Q <br /> APPROVED DWG NO. <br /> osiov�� MECHANICAL MASTER EVERETT, WA 40-58-M1h.1 <br />