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AERMEC NRA F 700 A User Manual

AERMEC NRA F 700 A
72 pages
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AERMEC S.P.A.
ISO 9001 - Cert. nº 0128/3
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INRAfPW
0405
6871970.00
Refrigeratori aria - acqua
Air to water chillers
NRA free cooling
R407C
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AERMEC NRA F 700 A Specifications

General IconGeneral
BrandAERMEC
ModelNRA F 700 A
CategoryChiller
LanguageEnglish

Summary

Declaration of Conformity

Unit Description

Unit Versions and Usage

Important Warnings

Critical safety and operational warnings for installation and use.

Unit Selection Guide

Component Descriptions (Refrigerant Circuit)

Component Descriptions (Hydraulic & Safety)

Control and Safety Components

Microprocessor Control System Overview

Overview of the microprocessor's functions and capabilities.

Microprocessor Functions

Technical Data (Cooling & Free-Cooling)

Cooling Performance Data

Performance metrics for the unit in cooling mode.

Free-Cooling Performance Data

Performance metrics for the unit in free-cooling mode.

General and Electrical Technical Data

General Unit Specifications

Key general technical specifications of the unit.

Electrical Data and Consumption

Electrical data including current absorption and power.

Selection Criteria and Examples

Selection Example Calculation

Step-by-step calculation for unit selection based on project data.

Selection and Efficiency Evaluation

Operating Efficiency Evaluation (Free-Cooling vs. Standard)

Comparison of energy efficiency with and without free-cooling.

Operating Limits and Design Data

Cooling Mode Operating Limits

Graphical representation of operating limits in cooling mode.

Correction Factors (Standard/High Temp/Low Noise)

Absorbed Power Correction Factors Graph

Graph for calculating absorbed power correction coefficients.

Cooling Capacity Correction Factors Graph

Graph for calculating cooling capacity correction coefficients.

Correction Factors (Low Noise Versions)

Cooling Capacity Correction Factors (Low Noise)

Graph for cooling capacity correction for low noise models.

Absorbed Power Correction Factors (Low Noise)

Graph for absorbed power correction for low noise models.

Free-Cooling Correction Factors

Cooling Capacity Correction Factor (Cfc) Graph

Graph for calculating cooling capacity correction in free-cooling mode.

Pressure Drop Data

Pressure Drops (Without Free-Cooling) Graphs

Graphs showing water pressure drops without free-cooling.

Pressure Drops (With Free-Cooling) Graphs

Graphs showing water pressure drops with free-cooling.

Correction Tables (Glycol, Delta T, Fouling)

Correction Tables for Glycol and Delta T

Tables for correcting performance based on glycol and delta T.

Glycol Solution Corrections

Power Correction with Glycol Graphs

Graphs for correcting power based on glycol presence.

Pressure Drop and Flow Rate Correction with Glycol Graphs

Graphs for correcting pressure drop and flow rate with glycol.

Versions with Storage Tank Specifications

Useful Head Graphs

Useful Head (Without Free-Cooling) Graph

Graph showing useful head for units without free-cooling.

Useful Head (With Free-Cooling) Graph

Graph showing useful head for units with free-cooling.

Sound Data (Chiller Mode)

Sound and Capacity Control Data

Protection Device Settings and Calibration

Suggested External Hydraulic Circuit

Internal Hydraulic Circuit Diagram

Refrigerant Circuit Diagram

Weight and Center of Gravity Data (Standard/Low Noise)

Weight and Center of Gravity Data (High Temperature)

Unit Installation and Handling

Handling and Lifting Precautions

Guidelines for safe unit movement and lifting operations.

Site Positioning and Clearances

Pre-Start, Startup, and System Handling

Pre-Start Checks

Essential checks before powering on the unit.

Unit Startup Procedures

Steps for safely starting the unit for operation.

System Charging and Discharging

Procedures for filling/draining the system and preventing freezing.

R407C Gas Handling Requirements

Specific precautions for using R407C refrigerant.

Safety Information and Warnings

Electrical Connections and Data

Wiring Connection Guidelines

Instructions for making electrical connections to the unit.

Power Supply Wiring Diagrams

Load and Auxiliary Connections Wiring Diagrams

Safety and Remote Control Connections Wiring Diagrams

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