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Mitsubishi Electric PAC-AH125 User Manual

Mitsubishi Electric PAC-AH125
16 pages
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GB
Air Handling Unit Controller
PAC-AH125, 140, 250, 500M-J
FOR INSTALLER
INSTALLATION MANUAL
For safe and correct use, please read this installation manual thoroughly before installing the controller.
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Mitsubishi Electric PAC-AH125 Specifications

General IconGeneral
BrandMitsubishi Electric
ModelPAC-AH125
CategoryControl Unit
LanguageEnglish

Summary

Safety Precautions

Before Installation and Electric Work

Essential safety guidelines and precautions before commencing installation and electrical work.

Precautions for Devices Using R410A Refrigerant

Specific safety measures and warnings related to the handling of R410A refrigerant.

Before Getting Installed

Important considerations and precautions to follow before the unit is installed.

Before Getting Installed (Moved) - Electrical Work

Electrical work precautions specifically for units that are being relocated or moved.

Before Starting the Test Run

Crucial steps and cautions to observe before initiating the unit's test run.

Accessories

System Component

Selection of the Heat Exchanger (Air Handling Unit)

Guidance on selecting the appropriate heat exchanger for the air handling unit.

Selecting an Installation Site and Installing the Controller

Combining Indoor Units with Outdoor Units

Instructions for combining indoor units with outdoor units for system setup.

Installing the Controller

Detailed steps and guidelines for the proper installation of the controller unit.

Refrigerant Pipe Specifications

Connecting Refrigerant Pipes

Refrigerant Piping Work

Essential procedures and precautions for performing refrigerant piping work.

Linear Expansion Valve Piping Work

Specifics on connecting the linear expansion valve to the liquid pipe.

Thermistor Setting Work

Guidelines for accurately setting and installing thermistors for temperature sensing.

Electrical Wiring

Precautions on Electrical Wiring

Critical safety warnings and guidelines for performing electrical wiring.

Connecting Wiring

Instructions for making electrical connections, including terminal block usage.

Transmission Cable Specifications

Details on the types, specifications, and maximum lengths for transmission cables.

Power Supply Wiring

Connecting Remote Controller, AHU Controller and Outdoor Transmission Cables

Connecting LEV-kit and Thermistor Cables

Connecting Distant Signal Line

External I/O Specifications

Setting Switches

Setting Addresses

Procedure for setting unit addresses using rotary switches.

Setting Unit Capacity

How to set the unit capacity using dip switches based on heat exchanger type.

Setting Temperature Control

Dip-Switch Function

Initial Setting and Test Run

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