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Air Conditioners
SLZ-M25, M35, M50, M60FA-A
INSTALLATION MANUAL
For safe and correct use, please read this manual and the outdoor unit installation manual thoroughly before install-
ing the air-conditioner unit.
FOR INSTALLER
English

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Summarization of Contents

Safety Precautions
Meanings of Symbols Displayed on the Unit
Explains symbols displayed on the unit for safety and warnings.
Symbols Used in the Text
Details symbols in the manual to indicate warnings, cautions, and important notes.
Symbols Used in the Illustrations
Explains symbols used in diagrams to clarify installation and operation procedures.
Selecting the Installation Location
Indoor Unit Location
Guidelines for selecting the optimal placement for the indoor air conditioning unit.
Wireless Remote Controller Mounting
Instructions for mounting the wireless remote controller for optimal signal reception.
Installation Diagram
Indoor Unit Diagram
Visual representation of the indoor unit and its installation clearances.
Outdoor Unit Reference
Directs users to the outdoor unit installation manual for its specific diagram.
Indoor Unit Installation Overview
Accessories Checklist
Lists and quantifies all accessories included with the indoor unit for installation.
Ceiling Openings and Bolt Locations
Details the required ceiling openings and suspension bolt locations for unit mounting.
Indoor Unit Installation Procedures
Duct Installation for Fresh Air Intake
Procedures for installing ductwork for fresh air intake, including flange preparation.
Suspension Structure Requirements
Guidelines for reinforcing the ceiling structure to safely support the indoor unit.
Unit Suspension Procedures
Step-by-step guide for physically suspending the indoor unit using suspension bolts.
Confirming Unit Position and Tightening Bolts
Ensures the main unit is correctly aligned and securely fastened to the ceiling structure.
Refrigerant Piping Work
Precautions
Important safety and procedural notes for handling refrigerants and piping.
Refrigerant Pipe Specifications
Details the required specifications for refrigerant pipes, including diameter and thickness.
Flaring Work Procedures
Step-by-step instructions for correctly flaring refrigerant pipes to prevent leaks.
Refrigerant Piping Work Details
Flaring Work Check
Instructions on how to check the quality of the flared pipe ends.
Piping Locations
Illustrates the correct placement of refrigerant and drainage pipes relative to the unit.
Pipe Connection Methods
Guides on connecting refrigerant pipes, including lubrication, tightening, and leak checks.
Drainage Piping Work
Drainage Piping Installation
Instructions for installing the drain piping system, including slope and jointing.
Electrical Work
Indoor Unit Power Supply from Outdoor Unit
Wiring diagrams and procedures for supplying power to the indoor unit from the outdoor unit.
Electrical Work - Indoor Unit Wiring
Indoor Unit Wiring Connections
Detailed steps for connecting power and control wires within the indoor unit's electric component box.
Electrical Work - Components and Controllers
Installing i-See Sensor and Signal Receiver
Procedures for wiring the i-See sensor and signal receiver components to the indoor unit.
Remote Controller Installation
Guidance on installing wired and wireless remote controllers, including area selection.
Wired Remote Controller Setup
Instructions for installing and setting up the wired remote controller.
Wireless Remote Controller Setup
Instructions for installing and setting up the wireless remote controller.
Electrical Work - Initial Settings
Initial Setting Configuration
Explains how to configure various initial settings via the remote controller.
Electrical Work - Function Settings
Wired Remote Controller Settings
Detailed steps for setting functions using the wired remote controller interface.
Wireless Remote Controller Settings
Instructions for setting functions and modes using the wireless remote controller.
Electrical Work - Air Direction Control
Fixed Up/Down Air Direction Setting
How to lock the airflow direction of specific vanes on the indoor unit.
Electrical Work - Vane Adjustment
Manual Vane Angle Setting
Procedure for manually setting and confirming the angle of the air vanes.
Test Run Procedures
Before Test Run Checks
Essential checks before starting the test run to ensure safety and proper installation.
Test Run with Wired Remote Controller
Steps for performing the test run and checking operation via the wired remote controller.
Test Run Procedures - Advanced
Test Run with Wireless Remote Controller
Steps for performing the test run and checking operation via the wireless remote controller.
Self-Check and Error Diagnosis
How to use the self-check feature to diagnose potential errors.
Drainage Check During Test Run
Verifying the proper functioning of the drainage system during operation.
Grille Installation
Grille Accessories Checklist
Lists all accessories provided with the grille for installation.
Grille Installation - Preparation and Mounting
Preparing to Attach the Grille
Steps for adjusting and checking the unit's position relative to the ceiling before grille installation.
Removing Intake and Corner Panels
Procedures for removing the intake grille and corner panel for access.
Temporarily Installing the Grille
Steps for temporarily hanging the grille onto the indoor unit before final securing.
Securing the Grille
Instructions for firmly attaching the grille to the indoor unit using screws.
Grille Installation - Wiring
Connecting Grille Wires
Details on connecting vane motor and panel vane motor wires within the grille's connector box.
Wiring i-See Sensor and Signal Receiver
Instructions for wiring the i-See sensor and signal receiver components into the grille's connector box.
Grille Installation - Final Steps
Locking Airflow Direction
How to manually lock the vane direction for specific airflow control.
Installing the Intake Grille
Procedure for reinstalling the intake grille after component wiring.
Final Grille Installation Check
Verifying proper grille installation, gap checks, and vane movement.
Easy Maintenance Function Overview
Smooth Maintenance Settings
Guides on configuring settings for smooth maintenance mode, like address and mode.

Table of Contents