York YZ Engineering Manual Download Page 1

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ENGINEERING GUIDE

YORK

YZ Centrifugal Chiller

Form: 161.01-EG1 (0618)

MODEL YZ MAGNETIC BEARING CENTRIFUGAL CHILLER

Style A

580 through 3500 kW

(165 through 1000 Tons)

Utilizing R-1233zd

Summary of Contents for YZ

Page 1: ...ENGINEERING GUIDE YORK YZ Centrifugal Chiller Form 161 01 EG1 0618 MODEL YZ MAGNETIC BEARING CENTRIFUGAL CHILLER Style A 580 through 3500 kW 165 through 1000 Tons Utilizing R 1233zd...

Page 2: ...01 EG1 0618 2 Table of Contents Nomenclature 3 Introduction 4 Unit Components 6 Equipment Overview 8 Codes and Standards 14 Chiller Options 16 Application Data 17 Unit Weights Dimensions 22 Visit YORK...

Page 3: ...no filter H harmonic filter VSD Cooling Product Family Motor Name Compressor Name Unit Mod Level VSD Name Motor Family Motor Size Code Motor Configuration Level Compressor Family Compressor Size Code...

Page 4: ...ximum chiller efficiency under actual not just theoretical operating conditions Now with the YORK YZ efficiency is improved up to an impressive 7 at part load and as much as an additional 5 at full lo...

Page 5: ...ice design principles that are consistent with our family of centrifugal chillers We made sure that this chiller and specifically the driveline was field serviceable by a single source supplier who al...

Page 6: ...YZ Engineering Guide Form 161 01 EG1 0618 6 Unit Components Suction Line Endsheet OptiView Control Panel Condenser Sight Glass Lockout Handle Variable Speed Drive Discharge Line...

Page 7: ...YZ Engineering Guide Form 161 01 EG1 0618 7 Unit Components Continued VSD Coolant Reservoir Refrigerant Purge Unit Compact Waterbox Evaporator Direct Drive Compressor Motor...

Page 8: ...trol is achieved by the combined use of variable speed control and mechanical flow regulation to provide fully modulating control from maximum to minimum load For normal air conditioning applications...

Page 9: ...and voltage of the electrical power to the motor The capacity control logic shall automatically adjust motor speed and compressor diffuser geometry for maximum part load efficiency by analyzing infor...

Page 10: ...the OptiView control panel OPTIVIEW CONTROL CENTER Note Please refer to the YZ Operations Maintenance Manual 161 01 OM1 for a complete description of features and functionality The YORK OptiView Cont...

Page 11: ...sheets drilled and reamed to accommodate the tubes are welded to the end of each shell Intermediate tube supports are fabricated from carbon steel plates and drilled and reamed to eliminate sharp edg...

Page 12: ...Flow Control Refrigerant flow to the evaporator is controlled by the YORK variable orifice control system Liquid refrigerant level is continuously monitored to provide optimum subcooler condenser and...

Page 13: ...rt Equipment by Johnson Controls allows the connection of data streams from equipment to the cloud providing unprecedented insights into operations Smart Equipment helps maximize system control for gr...

Page 14: ...m 7 Driveline separate from split shells Shipped as four major subassemblies with refrigerant charge shipped separately This form is best used when the chiller must fit through a tight space limited b...

Page 15: ...7012 KHK High Pressure Gas Control Law ELECTRICAL CODES c U L Underwriters Laboratory N E C National Electrical Code CE Directive 93 68 EEC IP Ingress Protection GB 5226 1 ETL Electrical Testing Labs...

Page 16: ...psig DWP Corrosion protection None Internally epoxy coated waterboxes and tubesheets sacrificial anodes Unit Configuration Ability to isolate refrigerant charge in the condenser None Isolation valves...

Page 17: ...ther valve while the unit is fully charged The purpose of the relief valves is to quickly relieve excess pressure of the refrigerant charge as a safety precaution in the event of an emergency such as...

Page 18: ...many cases but do require more sophisticated control and flow monitoring YZ chillers will operate successfully in VPF systems With a minimum allowable evaporator tube velocity of 0 5m s 1 5 fps for s...

Page 19: ...tube freeze up A flow switch is factory installed in the evaporator nozzle and connected to the OptiView panel which assures adequate chilled water flow during operation Condenser Water The chiller is...

Page 20: ...to the desired temperature Figure 2 Series Parallel Arrangement Series Counter Flow Arrangement Chillers may be applied in pairs with chilled water circuits connected in series and with the condenser...

Page 21: ...0 380 342 423 50 Hz 415 415 374 456 400 400 360 440 380 380 342 423 Copper Conductors Only copper conductors should be connected to compressor motors and starters Aluminum conductors have proven to be...

Page 22: ...YZ Engineering Guide Form 161 01 EG1 0618 22 Unit Weights Dimensions B Min of 915 mm 3 ft Min of 610 mm 2 ft Service Clearance C A Min of 610 mm 2 ft D...

Page 23: ...3314 2 9 m 9 4 2 4 m 7 9 4 3 m 14 4 3 m 14 11750kg 25900 lb FA3914 CA3314 3 1 m 10 0 2 4 m 7 9 4 3 m 14 4 3 m 14 12800 kg 28200 lb FA3916 SA3916 3 3 m 10 7 2 6 m 8 5 4 9 m 16 4 9 m 16 16050 kg 35350 l...

Page 24: ...VE OUR NATURAL RESOURCES THINK BEFORE YOU PRINT Copyright by Johnson Controls 2017 Form 161 01 EG1 Issue Date June 2018 Supersedes 161 01 EG1 1217 Subject to change without notice ALL RIGHTS RESERVED...