YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
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FORM 201.28-NM1.1<br />
ISSUE DATE: 8/29/2012<br />
TABLE OF CONTENTS<br />
SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY ........................................................................9<br />
Introduction .......................................................................................................................................................9<br />
Warranty ...........................................................................................................................................................9<br />
Quality Assurance and Safety ..........................................................................................................................9<br />
Fluorinated Greenhouse Gases .....................................................................................................................10<br />
Responsibility for Safety .................................................................................................................................10<br />
About This Manual..........................................................................................................................................10<br />
Misuse of Equipment ......................................................................................................................................10<br />
SECTION 2 - PRODUCT DESCRIPTION ...............................................................................................................13<br />
General System Description ...........................................................................................................................13<br />
Semi-Hermetic York Twin-<strong>Screw</strong> Compressors ..............................................................................................14<br />
Evaporator ......................................................................................................................................................15<br />
Condenser ......................................................................................................................................................15<br />
Refrigerant Circuit ..........................................................................................................................................15<br />
Electrical .........................................................................................................................................................15<br />
Building Automation System Capabilities .......................................................................................................15<br />
Microcomputer Control Center .......................................................................................................................16<br />
Accessories and Options ................................................................................................................................17<br />
SECTION 3 - HANDLING AND STORAGE ............................................................................................................19<br />
Delivery and Storage ......................................................................................................................................19<br />
Inspection .......................................................................................................................................................19<br />
Moving the Chiller ...........................................................................................................................................19<br />
Lifting Weights ................................................................................................................................................19<br />
Lifting Unit ......................................................................................................................................................20<br />
Unit Removal From Shipping Container .........................................................................................................21<br />
Lifting Using Lugs ...........................................................................................................................................22<br />
Lifting Using Shackles ....................................................................................................................................22<br />
SECTION 4 - INSTALLATION ................................................................................................................................23<br />
Location Requirements ..................................................................................................................................23<br />
Outdoor Installations ......................................................................................................................................23<br />
Location Clearances .......................................................................................................................................23<br />
Vibration Isolators ...........................................................................................................................................24<br />
Shipping Braces .............................................................................................................................................24<br />
Chilled <strong>Liquid</strong> Piping .......................................................................................................................................24<br />
Water Treatment .............................................................................................................................................26<br />
Pipework Arrangement ...................................................................................................................................26<br />
Minimum Water Volume .................................................................................................................................26<br />
Leaving Water Temperature Out of Range .....................................................................................................26<br />
Flow Rate Out of Range .................................................................................................................................26<br />
Thermal Storage .............................................................................................................................................27<br />
Variable Primary Flow ....................................................................................................................................27<br />
Connection Types and Sizes ..........................................................................................................................27<br />
Evaporator Connections .................................................................................................................................27<br />
Refrigerant Relief Valve Piping .......................................................................................................................29<br />
Electrical Connection ......................................................................................................................................29<br />
JOHNSON CONTROLS 5
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