Trane CVHE-SVU01E-ENX39640712050

CVHE-SVU01E-EN

Figure 31. Return CWR

Figure 32. Constant CWR

Machine Protection

and Adaptive

Control

Contents

Main Warnings and Cautions Contents Typical Product Description Block Unit Nameplate Literature change About this manual Page Commonly Used Acronyms Figure 1. General CVHE and CVHG unit components Page Page Cooling Cycle Page Page Figure 7. CVHE, CVHF, and CVHG sequence of operation overview Page Page Oil and Refrigeration Pump Surface Temperatures! Page Base Loading Control Algorithm: Page Ice Machine Control Figure 14. CVHE, CVHF and CVHG sequence of operation: ice making: running to ice making Free Cooling Cycle Page Hot Gas Bypass Hot Water control Heat Recovery Cycle Unit Control Panel (UCP) Control Panel Devices and Unit Mounted Devices Figure 16. Control panel and approximate dimensions Unit Control Panel (UCP) Tracer CH530 Chiller Controller Figure 17. DynaView main processor Page Page A general description of the top level modes is show in the following table. Figure 18 Figure 19 Page Page Diagnostic Screen Page Page Page Page Historic Diagnostics Log Page Chiller Mode Overrides Feature Settings Display Settings Purge { Page Page Page Page Interprocessor Communication Inter Processor Communications IPC3 Control Panel Internally mounted devices Figure 20. Control panel components layout and approximate dimensions Page Control Panel Devices Head Relief Request Output Compressor Motor Winding Temp Sensor Module Maximum Capacity Relay (TechView adjustable) Compressor Running Relay Machine Shutdown Manual Reset (MMR) Refrigerant Monitor Input 1A17 Page CDRP Refrigerant Pressure Output Option 1A15: Figure 21. Condenser pressure based output Figure 22. Delta pressure setting - differential pressure based output (Defaults shown) GBAS (Generic Building Automation System) Figure 23. Voltage versus percent RLA External Chilled Water Setpoint (ECWS) External Current Limit Setpoint WPSR (WFC Water Pressure Sensing Option) Module Characteristics Page Recommended Length to Run external Output signals Unit mounted devices Electrical Sequence UCP and Wye-Delta Starter Control Circuits Page Page Figure 24. Test and start timing sequence Page Momentary Power Loss (MPL) Protection. Figure 25. CVHE, CVHF, and CVHG sequence of operation: momentary power loss, (DynaView and Starter module remain powered) Current Overload Protection Figure 26. Overload trip time versus percent RLA Current Limit Protection Reverse Rotation Protection Differential to Start or Stop SoftLoading Evaporator Limit Leaving Water Temperature Cutout Low Refrigerant Temperature Cutout High Evaporator Leaving Water Temperature Cutout Page Condenser Limit Evaporator Variable Flow Compensation Restart Inhibit. Restart Inhibit Free Starts Restart Inhibit Start to Start Time Setting Clear Restart Inhibit Page Page Controls Chilled Water Reset (CWR) Return Water = Maximum Reset. Outdoor Air Temperature Where Constant Return Reset Ratio: Figure 28. Outdoor air temperature versus degrees of reset Page Page Page Unit Start-Up Procedures Unit Startup Seasonal Unit Start-Up Unit Startup Live Electrical Components! Toxic Hazards! Unit Shutdown Unit Shutdown Procedures Seasonal Unit Shutdown Oil Pump Heater Operation! Trouble Analysis Moisture Contamination! Normal Chiller Operating Characteristics Weekly Maintenance Every 3 Months Every 6 Months Off-Season Maintenance Annual Maintenance Oil Maintenance Compressor Oil Change on CVHE, CVHF, CVHG Oil Change Procedure Heater Damage! Oil Maintenance Replacing Oil Filter Other Maintenance Requirements Oil Supply System Problems! Figure 33. Rotary valve in drain position Refrigerant Charge Contains Refrigerant! Recovery and Recycle Connections Leak Testing Figure 34 - Typical Chemical Cleaning Setup Cleaning the Condenser Proper Water Treatment! Unit Corrosion Damage! Cleaning the Evaporator Control Settings and Adjustments Purge System Unit Preparation Contains Refrigerant!