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AERMEC NRA-H User Manual

AERMEC NRA-H
64 pages
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AERMEC S.P.A.
ISO 9001 - Cert. nº 0128/1
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INRAPW
0101
64264.19
Refrigeratori e pompe di calore aria acqua
Air to water chillers and heat pumps
NRA NRA-H
R22 - R407C
MANUALE TECNICO E D’INSTALLAZIONE
TECHNICAL AND INSTALLATION BOOKLET
Sostituisce il:
Replace:
64264.17 / 9801

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AERMEC NRA-H Specifications

General IconGeneral
CategoryControl Panel
BrandAERMEC
ModelNRA-H
Operating Temperature0°C to +50°C
Relative Humidity5% to 95% non-condensing
CommunicationRS485 Modbus
DisplayLCD with backlight

Summary

Detailed Component Descriptions

Component Functionality Explained

In-depth explanation of each unit component's role and operation.

Control System and Microprocessor

Microprocessor Card Operations

Detailed functions and capabilities of the unit's microprocessor.

Microprocessor Control Logic and Timing

Advanced Unit Operations and Alarms

Auto-Start and Alarm Handling

Unit restart after power loss and management of pre-alarms/alarms.

Unit Selection Criteria and Examples

Selecting the Right Unit

Guidelines for choosing a unit based on technical specifications and conditions.

Technical Data Tables (R22 Models)

Cooling and Heating Performance Data

Comprehensive technical specifications for R22 models.

Operating Limits Charts

Unit Operating Limits Explained

Graphical representation of operating limits for various conditions.

NRA D Selection and Heat Recovery

Control Parameter and Protection Settings

Control Parameter Setting Ranges

Adjustable ranges for unit control parameters.

Protection Device Settings

Settings for unit safety and protection devices.

Safety Measures and Symbols

Improper Uses and Warnings

Guidelines on what not to do with the unit and associated risks.

Installation Procedures

Installation Connections

Electrical Wiring Connections

Guidance on connecting the unit's electrical power supply.

Unit Start-up and Winterization

Pre-Start-up Checks

Essential checks before the initial unit start-up.

Unit Start-up Procedure

Steps for commissioning the unit and setting parameters.

Refrigerant Circuit Legend

Refrigerant Circuit Layout and Control Devices

Diagrams illustrating the refrigerant circuit and control components.

Electrical Wiring Diagram Key

Wiring Diagrams - Bicompressor Units

Wiring Diagrams - Monocompressor Units

Wiring Diagrams - Power Connections

Unit Power Supply Connections

Diagrams showing the main power input connections.

Wiring Diagrams - Auxiliary Circuits

Wiring Diagrams - Safety Connections

Safety Device Connections

Diagrams illustrating connections for safety devices.

Wiring Diagrams - Safety Connections (Specific Models)

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