YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls

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6 TABLE OF CONTENTS (CONT'D) FORM 201.28-NM1.1 ISSUE DATE: 8/29/2012 Power Wiring ..................................................................................................................................................29 Power Supply Wiring ......................................................................................................................................30 115VAC Control Supply Transformer ..............................................................................................................30 Control Wiring .................................................................................................................................................30 Volts Free Contacts ........................................................................................................................................30 System Inputs .................................................................................................................................................30 Power Supply Wiring ......................................................................................................................................32 Customer Control Wiring ................................................................................................................................33 SECTION 5 - TECHNICAL DATA ...........................................................................................................................49 Nomenclature .................................................................................................................................................49 SECTION 6 - COMMISSIONING ............................................................................................................................81 Preparation .....................................................................................................................................................81 First Time Start Up .........................................................................................................................................83 SECTION 7 - OPERATION .....................................................................................................................................85 Operating Controls .........................................................................................................................................85 Basic Operating Sequence .............................................................................................................................87 Unit Warning ...................................................................................................................................................87 Unit Safeties ...................................................................................................................................................88 System Safeties (Faults) ................................................................................................................................89 SECTION 8 - MICROPANEL ..................................................................................................................................95 SECTION 9 - MAINTENANCE ..............................................................................................................................129 General Requirements .................................................................................................................................129 Refrigerant Removal, Evacuation and Charging a YVAA Chiller .................................................................130 Microchannel Coil Cleaning ..........................................................................................................................131 Maintenance Requirements for YVAA Chillers .............................................................................................132 SECTION 10 - DECOMMISSIONING, DISMANTLING AND DISPOSAL ............................................................141 General .........................................................................................................................................................141 JOHNSON CONTROLS
FORM 201.28-NM1.1 ISSUE DATE: 8/29/2012 LIST OF FIGURES FIGURE 1 - YVAA Air-Cooled Screw Liquid Chiller with Variable Speed Drive .......................................................13 FIGURE 2 - Chiller Control System .........................................................................................................................14 FIGURE 3 - View of York Control Center User Interface .........................................................................................16 FIGURE 4 - Proper Lifting of YVAA Chiller ..............................................................................................................20 FIGURE 5 - Acceptable Minimum Clearances Around/Between Unit(s) .................................................................24 FIGURE 6 - Pipework Arrangement ........................................................................................................................26 FIGURE 7 - Leaving Water Temperature Out of Range Suggested Layout ............................................................26 FIGURE 8 - Suggested Layout For Applications With A Flow Rate Less Than The Evaporator Minimum Allowable Flow Rate ...................................................................................27 FIGURE 9 - Suggested Layout For Applications With A Flow Rate Less Than The Evaporator Minimum Allowable Flow Rate ...................................................................................27 FIGURE 10 - Victaulic Groove .................................................................................................................................27 FIGURE 11 - Flange For GB Vessels ......................................................................................................................28 FIGURE 12 - Flange Attachment .............................................................................................................................29 FIGURE 13 - Power Wiring - 2 Compressor Connections.......................................................................................32 FIGURE 14 - Customer Control Connections .........................................................................................................33 FIGURE 15 - YVAA Dimensions ..............................................................................................................................55 FIGURE 16 - Keyboard and Display........................................................................................................................85 JOHNSON CONTROLS 7
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YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls

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