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Explanation of Free-Cooling Only, Mixed, and Compressors Only operating modes.
Critical warnings regarding installation, connections, and compressor oil pre-heating.
Guidelines for selecting a unit and creating its commercial code.
Detailed descriptions of components within the refrigerant circuit.
Details on safety devices and control components for unit operation.
Overview of microprocessor functions including safety, timing, and alarms.
Detailed explanation of compressor start-up, timing, rotation, and alarm management.
Tables providing technical data for cooling and free-cooling operation.
Guidelines and charts for selecting the appropriate unit based on performance requirements.
Chart defining operational limits based on air and water temperatures.
Diagram for calculating cooling capacity when using free-cooling mode exclusively.
Step-by-step guide for calibrating the flow switch for correct operation.
Guidance on unit delivery, inspection, and safe handling procedures.
Recommendations for unit placement to ensure proper operation and maintenance access.
Essential checks to perform before starting the unit for the first time.
Instructions for electrical connections, including terminal tightening caution.
Schematic of the electronic control board for various models.
Detailed list of terminals on the electronic board and their functions.
Diagram illustrating the load connections for the unit.
Wiring diagrams for safety devices and remote control.
Wiring diagrams for safety and remote control for NRA 500-550 units.
Wiring diagrams for safety and remote control for NRA 600-700 storage units.
Schematic of the electronic control board for models with storage tanks.
Terminal list for electronic boards of models with storage tanks.
Wiring diagrams for safety and remote control for NRA 275-350 storage units.
Wiring diagrams for safety and remote control for NRA 600-700 storage units.
General