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CVHE-SVU01E-ENX39640712050
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CVHE-SVU01E-EN
Control System
Components
Contents
Main
Warnings and Cautions
Contents
Typical Product Description Block
Unit Nameplate
Literature change
About this manual
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Commonly Used Acronyms
Figure 1. General CVHE and CVHG unit components
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Cooling Cycle
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Figure 7. CVHE, CVHF, and CVHG sequence of operation overview
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Oil and Refrigeration Pump
Surface Temperatures!
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Base Loading Control Algorithm:
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Ice Machine Control
Figure 14. CVHE, CVHF and CVHG sequence of operation: ice making: running to ice making
Free Cooling Cycle
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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
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A general description of the top level modes is show in the following table.
Figure 18
Figure 19
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Diagnostic Screen
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Historic Diagnostics Log
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Chiller
Mode Overrides
Feature Settings
Display Settings
Purge
{
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Interprocessor Communication
Inter Processor Communications IPC3
Control Panel Internally mounted devices
Figure 20. Control panel components layout and approximate dimensions
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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
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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
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Recommended Length to Run external Output signals
Unit mounted devices
Electrical Sequence
UCP and Wye-Delta Starter Control Circuits
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Figure 24. Test and start timing sequence
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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
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Condenser Limit
Evaporator Variable Flow Compensation
Restart Inhibit.
Restart Inhibit Free Starts
Restart Inhibit Start to Start Time Setting
Clear Restart Inhibit
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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
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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!