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INSTALLATION MANUAL
Split System air conditioners
RR71B8V3B
RR71B2V3B
RR100B8V3B
RR71B8W1B
RR71B2W1B
RR100B8W1B
RR125B8W1B
RQ71B8V3B
RQ71B2V3B
RQ100B8V3B
RQ71B8W1B
RQ71B2W1B
RQ100B8W1B
RQ125B8W1B

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Table of Contents
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Summarization of Contents

Before Installation
Precautions for R410A
Strict cautions for keeping the refrigerant system clean, dry, and tight.
Installation
Instructions for installing indoor and outdoor units.
Accessories
Check included accessories for the unit.
Handling
Instructions on how to handle the unit during installation.
Precautions on Installation
Drain Pipe Disposal
Proper method for disposing of drain pipe water.
Refrigerant Pipe Size and Allowable Pipe Length
Refrigerant Pipe Size
Specifies pipe sizes for different system configurations.
Allowable Pipe Length and Height Difference
Details on maximum pipe lengths and height differences.
Precautions on Refrigerant Piping
When using existing refrigerant piping
Guidelines for reusing existing refrigerant piping.
Cautions for brazing
Procedures and precautions for brazing refrigerant pipes.
Refrigerant Piping
Cautions for handling stop valve
Safe handling procedures for refrigerant stop valves.
How to use the shut-off valve
Step-by-step guide on operating shut-off valves.
Cautions for Flare Connection
Cautions for handling the valve cover
Proper handling of valve covers to prevent damage.
Cautions for handling service port
Precautions for using the service port.
Precautions when connecting field piping and regarding insulation
Guidelines for piping connections and insulation.
Cautions for necessity of a trap
When and how to install refrigerant traps.
Evacuating
Set up for vacuuming and leak test
Procedures for setting up vacuuming and leak testing.
Procedure for leak test
Step-by-step guide for performing a leak test.
Charging Refrigerant
Important information regarding the refrigerant used
Information on refrigerant type and environmental impact.
Precaution for servicing
Precautions for servicing units requiring refrigerant opening.
Additional Charging of Refrigerant
For Pair System
Instructions for adding refrigerant for pair systems.
For Twin/Triple System
Instructions for adding refrigerant for twin/triple systems.
Total Charging Weight of Refrigerant
Calculating total refrigerant weight after leaks or changes.
Precaution for Pumping-Down Operation
Procedure
Steps for performing the pumping-down operation.
Precautions on Electrical Wiring Work
Electrical Wiring Work
General guidelines and precautions for electrical wiring.
Test Operation
Pre-run Checks
Checklist before starting test operation.
Test Run
Procedures for performing the test run.
Precautions Regarding Test-Runs
Warnings and error code explanations during test runs.

Table of Contents