Mitsubishi Electric MXZ-2C20NAHZ2 User Manual

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Installation Manual
For INSTALLER
 This manual only describes the installation of outdoor unit.
When installing the indoor unit, refer to the installation manual of indoor unit.
Any structural alterations necessary for installation must comply with local build-
ing code requirements.
Notice d’installation
Destinée à l ’ INSTALLATEUR
 Cette notice ne décrit que l’installation de l’appareil extérieur.
Lors de l’installation de l’appareil intérieur, consultez la notice d’installation de cet
appareil.
Toute altération structurelle requise pour l’installation doit être conforme aux exi-
gences du code du bâtiment local.
Manual de instalación
Para el INSTALADOR
 En este manual sólo se describe la instalación de la unidad exterior.
Para instalar la unidad interior, consulte el manual de instalación de dicha unidad.
Cualquier modi¿cación estructural necesaria para lleYar a cabo la instalación de-
beri cumplir las normas de edi¿cación locales.
Split-type Air-Conditioner
MXZ-2C20NAHZ2
MXZ-3C24NAHZ2
MXZ-3C30NAHZ2
MXZ-5C42NA2

Mitsubishi Electric MXZ-2C20NAHZ2 Specifications

General

Brand	Mitsubishi Electric
Model	MXZ-2C20NAHZ2
Category	Air Conditioner
Language	English

Summary

Before Installation Safety Warnings

Observed Safety Precautions

Details critical safety warnings and precautions to prevent injury or damage during installation.

Optional Joints and Installation Location

Selecting Optional Different-Diameter Joints

Guidance on selecting and using optional joints for connecting pipes of different diameters.

Selecting Installation Location

Guidelines for choosing the optimal installation site, considering environmental factors and performance.

Outdoor Unit Installation Procedures

Installation Diagram and Unit Mounting

Illustrates installation layout, component placement, dimensions, and unit mounting.

Installing the Outdoor Unit

Instructions for securely fixing the outdoor unit to its foundation, ensuring stability and proper drainage.

Outdoor Unit Wiring and Connections

Connecting Wires for Outdoor Unit

Detailed steps for connecting electrical wiring to the outdoor unit, including power and control connections.

Refrigerant Pipe Work and System Checks

Flaring Work and Pipe Connection

Step-by-step guide for performing flare work on copper pipes and connecting them to the unit.

Insulation and Taping

Guidance on insulating and taping piping joints to prevent condensation and heat loss.

Purging Procedures and Leak Test

Procedures for purging air and performing leak tests on the refrigerant system after installation.

System Operation Checks and User Explanation

Gas Charge Procedure

Instructions for charging the system with the correct amount of refrigerant, including precautions.

Test Run and Wiring Correction

Steps for conducting a test run and using the wiring/piping correction function.

Explanation to the User

Guidance on explaining the unit's operation and maintenance to the end-user.

Pumping Down System

Procedure for Pumping Down

Procedure for pumping down the refrigerant system when relocating or disposing of the air conditioner.