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Midea V5 X VRF Series

Midea V5 X VRF Series
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Model:
Technical Service Manual
V5 X Series VRF
3 phase, 380-415V, 50Hz
MV5-X224W/V2GN1-AU
MV5-X280W/V2GN1-AU
MV5-X335W/V2GN1-AU
MV5-X400W/V2GN1-AU
MV5-X450W/V2GN1-AU
MV5-X500W/V2GN1-AU

Table of Contents

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Midea V5 X VRF Series Specifications

General IconGeneral
BrandMidea
ModelV5 X VRF Series
CategoryAir Conditioner
LanguageEnglish

Summary

Part 1 General Information

Features

Details energy saving features, DC inverter compressors, DC fan motors, and high efficiency heat exchangers.

Outdoor units

Describes outdoor unit lineup, standard, and space-saving combinations for different capacities.

Indoor units lineup

Lists various indoor unit types (cassettes, ducted, wall-mounted) and their capacities (kW).

Nomenclature

Explains the model naming convention for outdoor units, breaking down each component.

Part 2 Selection Procedure

Introduction

Outlines the model selection process, including system design, unit selection, and capacity calculations.

Unit selection (based on cooling load)

Details how to select indoor and outdoor units based on given cooling load conditions and capacity tables.

Part 3 Specifications & Performances

Specifications

Provides detailed technical specifications for outdoor units, including power supply, capacities, compressor, and fan motors.

Dimensions

Shows overall and section dimensions for various outdoor unit models (8-18HP) in millimeters.

Service space

Specifies required clearances for installation and maintenance of outdoor units to ensure proper airflow.

Piping diagrams

Illustrates refrigerant piping diagrams for different outdoor unit models (8, 10, 12HP and 14, 16, 18HP).

Wiring diagram and field wiring

Shows electrical wiring diagrams for outdoor units and explains field wiring connections.

Electric characteristics

Lists electrical data for various models, including voltage, current, and power ratings.

Capacity tables

Provides comprehensive cooling and heating capacity tables for different outdoor units and operating conditions.

Operation limits

Defines the acceptable outdoor temperature ranges for continuous and intermittent operation in cooling and heating.

Sound levels

Lists the sound pressure levels (dB(A)) for different outdoor unit models.

Accessories

Details standard and optional accessories included with the units.

Functional parts and safety devices

Describes key functional parts and safety devices like compressors, sensors, and valves.

Part 4 Installation

Units installation

Covers procedures and cautions for installing indoor and outdoor units, including hoisting.

Select installation position

Provides guidelines for selecting suitable installation locations and constructing foundations for outdoor units.

Refrigerant piping selection

Outlines permitted values for piping lengths, level differences, and selection criteria.

Refrigerant pipe installation

Covers basic requirements, principles, and procedures for installing refrigerant piping.

Brazing

Covers selecting refrigerant pipes, nitrogen filling for protection, and making pipe joints.

Pipe cutting

Explains the correct procedure and tools for cutting copper pipes to avoid deformation.

Pipe cleaning

Details the function, purpose, risks, and procedure for flushing copper pipes with pressurized gas.

Drainage pipe engineering

Covers installation principles, requirements, and advantages/disadvantages of drainage pipe connections.

Electrical wiring installation

Covers wiring terminal instructions, electrical characteristics, and power supply requirements.

Control system installation

Details installation of control lines, signal wires, and wiring examples for centralized control.

Running test

Lists inspection, preparation, and commissioning steps for trial runs of single and multiple outdoor units.

Part 5 Troubleshooting

Outdoor main control board instructions

Identifies and explains the functions of various ports and LEDs on the main PCB.

Error code table

Lists error codes with their content, possible causes, and troubleshooting steps.

Troubleshooting

Provides diagnostic flowcharts for common errors like communication failures, phase sequence issues, and sensor malfunctions.

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