Trane MITSUBISHI ELECTRIC NTXWMT09A111A Series User Manual

1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
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■ Do not install the unit by yourself (user).
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■ Follow the instructions detailed in the installation manual.
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When installing the unit, use appropriate protective equipment and tools for
safety.
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■ Install the unit securely in a place that can bear the weight of the unit.
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■ Perform electrical work according to the installation manual and be sure to use
an exclusive circuit. Do not connect other electrical appliances to the circuit.
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■ Ground the unit correctly.
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■ Do not damage the wires.
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■
Be sure to shut off the main power when setting up the indoor P.C. board or
wiring.
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■ Use the speci¿ed wires to securely connect the indoor and outdoor units. At-
tach the wires ¿rmly to avoid applying stress to the terminal block.
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■ Do not install the unit in a place where Àammable gas may leak.
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■ Do not use intermediate connection of the power cord or the extension cord.
Do not connect many devices to one AC outlet.
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■ Use the parts provided or speci¿ed parts for the installation work.
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When plugging the power supply plug into the outlet, make sure that there is
no
dust, blockage, or loose parts both in the outlet and on the plug. Verify that
the power supply plug is completely in the outlet.
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■ Securely attach the electrical cover to the indoor unit and the service panel to
the outdoor unit.
If the electrical cover of the indoor unit and/or the service panel of the outdoor unit are
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■ When installing, relocating, or servicing the unit, make sure that no substance
other than the speci¿ed refrigerant (R410A) enters the refrigerant circuit.
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■ Do not discharge the refrigerant into the atmosphere. Check that the refriger-
ant gas does not leak after installation has been completed. If refrigerant leaks
during installation, ventilate the room.
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■ Use appropriate tools and piping materials for installation.
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■ When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor is running and the
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■ When installing the unit, securely connect the refrigerant pipes before starting
the compressor.
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■ Fasten a Àare nut with a torque wrench as speci¿ed in this manual.
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■ Install the unit according to national wiring regulations.
■ Depending on the installation area, install a Ground Fault Interrupt (GFI) circuit
breaker.
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■ Perform the drainage/piping work securely according to the installation manual.
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■ Do not touch the air inlet or the aluminum ¿ns of the outdoor unit.
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■ Do not install the outdoor unit where small animals may live.
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CAUTION
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WARNING
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1. BEFORE INSTALLATION
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ENGLISH
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INSTALLATION MANUAL
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manual of the multi unit for outdoor unit installation.
NTXWMT09A111A✱
NTXWMT12A111A✱
Required Tools for Installation
Phillips screwdriver
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3 in. (75 mm) hole saw
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Wrench (or spanner)
5/32 in. (4 mm) hexagonal wrench
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Pipe cutter with reamer

Trane MITSUBISHI ELECTRIC NTXWMT09A111A Series Specifications

General

Category	Air Conditioner
Model	NTXWMT09A111A
Brand	Trane
Cooling Capacity (BTU/h)	9, 000
Cooling Capacity (kW)	2.64
Refrigerant Type	R410A
Power Supply (Voltage/Phase/Frequency)	208-230V/1-Phase/60Hz
Model Series	NTXWMT
Manufacturer Collaboration	Mitsubishi Electric
Type	Mini-Split
Indoor Unit Noise Level (dB)	19
Operating Temperature Range (Cooling)	14°F to 115°F
Series	MITSUBISHI ELECTRIC NTXWMT

Summary

1. Before Installation

1-1. Safety Precautions

Crucial safety instructions and warnings to be followed during the installation process.

1-2. Installation Location Selection

Indoor Unit Location

Guidelines for selecting an optimal and safe location for the indoor unit.

Remote Controller Location

Recommendations for placing the remote controller for ease of use and signal reception.

Outdoor Unit Location

Criteria for selecting a suitable and safe location for the outdoor unit.

1-3. Unit Specifications

Power Supply and Wiring Specifications

Details on power supply, electrical wiring, and ground wire specifications.

Refrigerant Pipe Requirements

Information on refrigerant pipe dimensions, insulation, and bending radius.

1-4. Installation Diagram

Included Accessories

List of accessories provided with the unit for installation.

Field-Supplied Parts

Components that the installer must provide for the installation process.

2. Indoor Unit Installation

Attaching the Installation Plate

Steps for securely attaching the indoor unit's installation plate to the wall.

Drilling the Wall Hole

Procedures for drilling the necessary hole through the wall for piping.

Indoor Unit Wiring

Detailed instructions for connecting electrical wires to the indoor unit.

2-4. Pipe Forming and Drain Piping

Pipe Forming Procedures

Steps for shaping refrigerant piping and attaching drain hoses for proper routing.

Drain Piping Installation

Guidelines for proper drain piping installation to prevent water leakage and damage.

3. Outdoor Unit Installation

Outdoor Unit Wiring

Instructions for connecting electrical wires to the outdoor unit's terminal block.

Flare Connection Procedure

Procedure for making secure flare connections for refrigerant pipes.

3-3. Pipe Connection

Indoor Unit Pipe Connection

Steps for connecting refrigerant pipes to the indoor unit's joints.

Outdoor Unit Pipe Connection

Steps for connecting refrigerant pipes to the outdoor unit's stop valve.

3-4. Insulation and Taping

4. Purging, Leak Test, and Test Run

Purging and Leak Test

Steps for purging refrigerant lines and performing a leak test on the system.

System Test Run

Procedure for conducting an initial test run of the air conditioner to verify operation.

Remote Signal Check

Method to verify that the indoor unit receives signals from the remote controller.

Auto Restart Function

Explanation of the auto restart function and its deactivation.

User Explanation

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

5. Relocation and Maintenance

Panel Assembly Procedures

Procedures for removing and installing the front panel assembly of the unit.

Indoor Unit Removal

Steps for safely detaching the indoor unit from its installation plate.

System Pumping Down

Procedure for pumping down the refrigerant system before relocation or disposal.