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Trane CVHG User Manual

Trane CVHG
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6
CVHE-SVX02M-EN
Customer-supplied Remote Starter
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Current Transformer and Potential
Transformer Wire Sizing . . . . . . . . . . . . . . . . . 55
Power Supply Wiring . . . . . . . . . . . . . . . . . . . . . . 57
Three-Phase Power . . . . . . . . . . . . . . . . . . . . . . 57
Circuit Breakers and Fused
Disconnects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Power Factor Correction Capacitors
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Interconnecting Wiring. . . . . . . . . . . . . . . . . . . 58
Starter to Motor Wiring (Remote-
Mounted Starters Only) . . . . . . . . . . . . . . . . . . 59
Ground Wire Terminal Lugs. . . . . . . . . . . 59
Terminal Clamps. . . . . . . . . . . . . . . . . . . . . 60
Wire Terminal Lugs . . . . . . . . . . . . . . . . . . 60
Bus Bars . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Starter to Control Panel Wiring . . . . . . . . . . . 61
10 to 13.8kV Medium Voltage Motor. . . . . . . 62
Motor Terminal Box . . . . . . . . . . . . . . . . . . . . . 62
Motor Supply Wiring. . . . . . . . . . . . . . . . . . . . . 63
Motor Terminals . . . . . . . . . . . . . . . . . . . . . 63
Ground Wire Terminal Lug. . . . . . . . . . . . 63
System Control Circuit Wiring (Field
Wiring) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Water Pump Interlock Circuits and Flow
Switch Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Chilled Water Pump . . . . . . . . . . . . . . . . . . 65
Chilled Water Proof of Flow . . . . . . . . . . . 65
Condenser Water Pump . . . . . . . . . . . . . . 65
Condenser Water Proof of Flow . . . . . . . 65
Temperature Sensor Circuits . . . . . . . . . . . . . 65
CWR—Outdoor Option . . . . . . . . . . . . . . . 66
Optional Control and Output
Circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Optional Tracer Communication
Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Starter Module Configuration. . . . . . . . . . . . . 66
Schematic Wiring Drawings . . . . . . . . . . . . . . 66
Operating Principles . . . . . . . . . . . . . . . . . . . . . . . 67
General Requirements . . . . . . . . . . . . . . . . . . . 67
Cooling Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
CVHE and CVHG 3-Stage
Compressor . . . . . . . . . . . . . . . . . . . . . . . . . 67
CVHF 2-Stage Compressor. . . . . . . . . . . . 67
Oil and Refrigerant Pump . . . . . . . . . . . . . . . . 68
Compressor Lubrication
System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Motor Cooling System . . . . . . . . . . . . . . . . . . . 70
Tracer AdaptiView Display . . . . . . . . . . . . . . . 70
Start-up and Shut-down . . . . . . . . . . . . . . . . . . . 71
Sequence of Operation. . . . . . . . . . . . . . . . . . . 71
Software Operation Overview
Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Start-up Sequence of Operation—
Wye-delta . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Power Up Diagram . . . . . . . . . . . . . . . . . . . 76
Ice Machine Control. . . . . . . . . . . . . . . . . . . . . . 76
Free Cooling Cycle . . . . . . . . . . . . . . . . . . . . . . . 78
Free Cooling (FRCL) . . . . . . . . . . . . . . . . . . 79
Hot Gas Bypass (HGBP) . . . . . . . . . . . . . . . . . . 79
Hot Water Control . . . . . . . . . . . . . . . . . . . . . . . 79
Heat Recovery Cycle . . . . . . . . . . . . . . . . . . . . . 80
Auxiliary Condensers . . . . . . . . . . . . . . . . . . . . 80
Control Panel Devices and Unit-Mounted
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Unit Control Panel . . . . . . . . . . . . . . . . . . . 80
User-Defined Language
Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Unit Start-up and Shut-down
Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Daily Unit Start-up . . . . . . . . . . . . . . . . . . . 81
Seasonal Unit Start-up . . . . . . . . . . . . . . . 82
Daily Unit Shut-down . . . . . . . . . . . . . . . . 82
Seasonal Unit Shut-down. . . . . . . . . . . . . 82
Recommended Maintenance . . . . . . . . . . . . . . 83
Record Keeping Forms . . . . . . . . . . . . . . . . . . . 83
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . 83
Recommended Compressor Oil
Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Purge System . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
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Trane CVHG Specifications

General IconGeneral
BrandTrane
ModelCVHG
CategoryChiller
LanguageEnglish

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