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Trane Technologies CenTraVac CVHE - Page 6

Trane Technologies CenTraVac CVHE
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6
CVHE-SVX005B-EN
Installation Requirements . . . . . . . . . . . . . . . . 57
Electrical Requirements . . . . . . . . . . . . . . . . . . 57
Trane-supplied Starter Wiring . . . . . . . . . . . . 58
Customer-supplied Remote Starter
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Current Transformer and Potential
Transformer Wire Sizing . . . . . . . . . . . . . . . . . 59
Power Supply Wiring . . . . . . . . . . . . . . . . . . . . . . 61
Three-Phase Power . . . . . . . . . . . . . . . . . . . . . . 61
Circuit Breakers and Fused
Disconnects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Power Factor Correction Capacitors
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Interconnecting Wiring. . . . . . . . . . . . . . . . . . . 62
Starter to Motor Wiring (Remote-
Mounted Starters Only) . . . . . . . . . . . . . . . . . . 63
Ground Wire Terminal Lugs. . . . . . . . . . . 63
Terminal Clamps. . . . . . . . . . . . . . . . . . . . . 64
Wire Terminal Lugs . . . . . . . . . . . . . . . . . . 64
Bus Bars . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Starter to Control Panel Wiring . . . . . . . . . . . 65
10 to 13.8kV Medium Voltage Motor. . . . . . . 66
Motor Terminal Box . . . . . . . . . . . . . . . . . . . . . 66
Motor Supply Wiring. . . . . . . . . . . . . . . . . . . . . 67
Motor Terminals . . . . . . . . . . . . . . . . . . . . . 67
Ground Wire Terminal Lug. . . . . . . . . . . . 67
System Control Circuit Wiring (Field
Wiring) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Water Pump Interlock Circuits and Flow
Switch Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Chilled Water Pump . . . . . . . . . . . . . . . . . . 69
Chilled Water Proof of Flow . . . . . . . . . . . 69
Condenser Water Pump . . . . . . . . . . . . . . 69
Condenser Water Proof of Flow . . . . . . . 69
Heat Recovery Proof of Flow . . . . . . . . . . 69
Temperature Sensor Circuits . . . . . . . . . . . . . 70
CWR—Outdoor Option . . . . . . . . . . . . . . . 70
Optional Control and Output
Circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Starter Module Configuration. . . . . . . . . . . . . 70
Schematic Wiring Drawings . . . . . . . . . . . . . . 70
Operating Principles . . . . . . . . . . . . . . . . . . . . . . . 71
General Requirements . . . . . . . . . . . . . . . . . . . 71
Cooling Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
CVHE and CVHG 3-Stage
Compressor . . . . . . . . . . . . . . . . . . . . . . . . . 71
CVHF 2-Stage Compressor. . . . . . . . . . . . 71
Oil and Refrigerant Pump . . . . . . . . . . . . . . . . 72
Compressor Lubrication
System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Motor Cooling System . . . . . . . . . . . . . . . . . . . 75
Tracer AdaptiView Display . . . . . . . . . . . . . . . 75
Start-up and Shut-down . . . . . . . . . . . . . . . . . . . 76
Sequence of Operation. . . . . . . . . . . . . . . . . . . 76
Software Operation Overview
Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Start-up Sequence of Operation—
Wye-delta . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Ice Building Control. . . . . . . . . . . . . . . . . . . . . . 81
Free Cooling Cycle. . . . . . . . . . . . . . . . . . . . . . . 83
Free Cooling (FRCL) . . . . . . . . . . . . . . . . . . 84
Hot Gas Bypass (HGBP) . . . . . . . . . . . . . . . . . . 84
Hot Water Control . . . . . . . . . . . . . . . . . . . . . . . 84
Heat Recovery Cycle . . . . . . . . . . . . . . . . . . . . . 85
Auxiliary Condensers . . . . . . . . . . . . . . . . . . . . 85
Control Panel Devices and Unit-Mounted
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Unit Control Panel . . . . . . . . . . . . . . . . . . . 85
User-defined Language Support . . . . . . 86
Unit Start-up and Shut-down
Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Daily Unit Start-up . . . . . . . . . . . . . . . . . . . 86
Seasonal Unit Start-up . . . . . . . . . . . . . . . 87
Daily Unit Shut-down . . . . . . . . . . . . . . . . 87
Seasonal Unit Shut-down. . . . . . . . . . . . . 87
Recommended Maintenance . . . . . . . . . . . . . . 88
Record Keeping Forms . . . . . . . . . . . . . . . . . . . 88
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . 88
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