Trane R-410A Split Wall System Installation Manual

Safety Warning

Only qualified personnel should install and service the equipment. Improper installation, adjustment, or alteration by unqualified persons could result in death or serious injury. Always follow all safety precautions in the literature, on labels, and on the equipment itself.

Table of Contents

• Safety Instructions
• Part Identification
• Indoor Unit Display
• Emergency and Auto-Restart Functions
• Remote Control
• Operating Instructions
• Protections
• Installation Manual
• Maintenance
• Troubleshooting

General Safety and Recommendations

For the Installer

• Read this manual carefully before installing and using the unit.
• Prevent children from accessing the work area during installation.
• Ensure the outdoor unit is securely fastened.
• Check for air leaks in the refrigerant system.
• Perform a test cycle after installation to ensure proper operation.
• Use the correct fuse rating (3.15A 250V for 220V, 3.15A 125V for 120V).
• Provide adequate overload protection.
• Ensure the line voltage matches the identification plate. Keep contacts clean and insert the plug firmly.
• Verify the outlet is suitable for the plug; change if necessary.
• The appliance must be provided with means of disconnection from the mains supply with a contact separation in all poles.
• Installation must be performed by qualified professionals.
• Ensure the equipment is properly grounded.
• Do not install near flammable substances or pressurized containers.
• Take precautions in unventilated areas to prevent refrigerant leaks.
• Dispose of packaging materials properly.
• Use common sense and precautions for installation, operation, and maintenance.
• Install according to local regulations.
• Disconnect power before accessing electrical terminals.
• Follow national wiring regulations.
• This appliance can be used by children aged 8 and above, and persons with reduced physical, sensory, or mental capabilities, if supervised and instructed on safe use.

For the User

• If you smell burning or see smoke, disconnect power immediately and call a service center.
• Dispose of packaging materials properly.
• Do not operate without the air filter installed.
• The user is responsible for proper installation and grounding.
• Never attempt to install the unit yourself; contact a qualified technician.
• Ensure line voltage matches the nameplate. Keep the plug clean and insert it firmly.
• Do not unplug the unit while it is operating.
• Avoid directing airflow directly at people, especially children or the elderly.
• Recycle remote control batteries properly.
• Disconnect the unit if it will not be used for an extended period.
• Direct airflow upwards for cooling and downwards for heating.
• Use the air conditioner according to this manual. Use common sense and precautions.
• Disconnect power before cleaning or maintenance.
• Select the most appropriate temperature to prevent issues.
• Only allow authorized technicians to repair the unit.
• This appliance is designed for domestic environments only.

Safety Prohibitions

• Do not compress, stretch, or excessively bend the power cord.
• Do not use extension cords or multiple outlets.
• Do not touch the equipment barefoot or with wet skin.
• Do not obstruct air inlets or outlets.
• Do not alter the equipment's characteristics.
• Do not install in environments with gases, oils, or near heat sources.
• Do not leave doors or windows open while the unit is operating.
• Prolonged exposure to cold air can be detrimental to plants and animals.
• Do not place objects on the indoor or outdoor units.
• Do not insert rods or similar objects into the unit.

Part Identification

Indoor Unit

Outdoor Unit

Note: The illustration is a generic air conditioner model; your unit's appearance may differ.

Indoor Unit Display

The indoor unit display shows temperature, error codes, and operational status.

Note: Key and indicator positions may vary by model, but functions remain the same.

Emergency Operation and Auto-Restart Function

Auto-Restart Function

This factory-set feature allows the unit to resume operation with its previous settings after a power interruption.

Emergency Operation

If the remote control is lost or not functioning:

1. Lift the front panel to access the operation button.
2. Press the button once (one beep) for forced cooling operation.
3. Press the button twice (two beeps) for forced heating operation.
4. Press the button again (long beep) to turn off the unit.
5. After 30 minutes in forced operation, the unit will automatically switch to FEEL mode.

Note: The emergency button's location may vary by model.

Remote Control

Buttons and Functions

Note: Remote control appearance and some functions may vary by model.

Remote Control Display Symbols

Batteries

Installing Batteries:

1. Slide the battery compartment cover.
2. Insert 2 AAA batteries, observing polarity.
3. Replace the cover.
4. Use 2 AAA alkaline batteries (1.5V). Do not use rechargeable batteries.
5. Replace batteries when the remote control display is dim or not visible.
6. Dispose of used batteries properly.

Figure (1): Micro switch under the rear cover.

CAUTION: If batteries are removed after setting these functions, the configuration will be lost and must be reconfigured.

Setting Cooling Mode:

• When inserting batteries, COOL and HEAT symbols will flash.
• Press any button while the COOL symbol is displayed to set for cooling only.
• Press any button while the HEAT symbol is displayed to set for cooling/heating.
• If set to cooling only, heating functions will not be visible. Remove batteries and repeat to reconfigure.

Remote Control Placement:

• Aim the remote control directly at the unit's signal receiver.
• Ensure there are no obstructions between the remote and the receiver.
• Never expose the remote control to direct sunlight.
• Keep the remote control at least 1 meter away from televisions or other electronic devices.

Operating Instructions

Airflow

The air conditioner creates comfortable climate conditions. It can cool, dehumidify, and heat (in heat pump models).

• Air is drawn through the front panel and filters, then passes through the heat exchanger.
• Heat and humidity are expelled outdoors.
• Air direction is controlled by motorized horizontal louvers and manual vertical louvers.

Airflow Control "SWING"

The SWING button activates the automatic movement of the air louvers for uniform air distribution. It can also be stopped to direct air in a fixed direction.

• For cooling, direct air horizontally.
• For heating, direct air downwards as warm air rises.
• Vertical louvers, located behind the horizontal ones, are manually adjusted to direct air sideways.
• This adjustment must be made with the unit turned OFF.

CAUTION: Do not manually move the louvers; this can damage the mechanism.

DANGER: Never insert hands or objects into the air outlet due to the high-speed fan.

Cooling Mode

• This function cools the room and reduces humidity.
• Press MODE until COOL is displayed.
• The cooling cycle activates when the room temperature is higher than the set temperature.
• Optimize operation by adjusting temperature, fan speed, and airflow direction.

Heating Mode

• This function heats the room.
• Press MODE until HEAT is displayed.
• Set the temperature higher than the room temperature.
• Optimize operation by adjusting temperature, fan speed, and airflow direction.
• The unit has a "Hot Start" function that delays airflow until the air reaches the appropriate temperature.
• The unit may activate a defrost cycle to remove frost from the outdoor unit, temporarily stopping the fan. This cycle lasts 2-10 minutes.

Timer

Automatic ON Timer

• The unit must be OFF to program the automatic ON timer.
• Select the desired mode and fan speed before programming.
• Press TIMER, then use TEMP buttons to set the desired temperature.
• Press TIMER again, then use TEMP buttons to set the hours until the unit turns on.
• To cancel, press TIMER again.
• If power is cut, the timer programming will be erased and must be reprogrammed.

Automatic OFF Timer

• The unit must be ON to program the automatic OFF timer.
• Press TIMER, then use TEMP buttons to set the hours until the unit turns off.
• To cancel, press TIMER again.
• If power is cut, the timer programming will be erased and must be reprogrammed.
• The timer function can be programmed in half-hour increments.

Ventilation / Dehumidification

Ventilation Mode (FAN)

• This function circulates air only.
• Press MODE until FAN is displayed.
• Press the FAN button to cycle through fan speeds: LOW/MEDIUM/HIGH/AUTO.
• The selected speed is stored for the next operation.
• In FEEL mode, fan speed is selected automatically.

Dehumidification Mode (DRY)

• This function reduces air humidity for increased comfort.
• Press MODE until DRY is displayed.
• The unit will automatically alternate between cooling and fan cycles to reduce humidity.

Automatic "Feel" Mode / "Sleep" Mode

Automatic Mode (FEEL)

• Press MODE until the △ (FEEL) symbol is displayed.
• The unit automatically selects the operating mode, fan speed, and temperature for optimal comfort based on ambient temperature.

Optimize operation by adjusting temperature (±2°C), fan speed, and airflow direction.

Sleep Mode

• Press the SLEEP button on the remote control. The (AUTO QUIET) symbol will appear on the display.
• In Sleep mode, the unit automatically adjusts the room temperature for comfortable sleep.
• In cooling or dehumidification modes, the set temperature increases by 1°C every 60 minutes, up to a maximum of 2°C after 2 hours.
• In heating mode, the set temperature decreases by 1°C every 60 minutes, up to a maximum of 2°C after 2 hours.
• After 10 hours of operation in Sleep mode, the unit will automatically turn off.

Protections

Internal protection devices may stop the unit's operation under the following conditions:

For T1 Climate Condition Models

For Tropical T3 Climate Condition Models

Compressor Protection: The unit will not restart for 3 minutes after stopping or changing modes.

Installation Manual – Location Selection

Indoor Unit

• Install level on a strong wall that does not transmit vibrations.
• Ensure no obstructions to air inlet and outlet.
• Do not install near heat sources, steam, or flammable gases.
• Install near an independent power source.
• Do not install where exposed to direct sunlight.
• Install where connection between indoor and outdoor units is easy.
• Ensure condensate can drain easily.
• Leave necessary space for normal operation and maintenance as shown in the figure.
• Install with air filters accessible.

Outdoor Unit

• Do not install near heat sources, steam, or flammable gases.
• Do not install in dusty or windy locations.
• Do not install in high-traffic areas. Select a location where airflow and noise do not disturb neighbors.
• Do not install where exposed to direct sunlight. Use protection if necessary, ensuring it does not interfere with airflow.
• Leave adequate space around the unit for airflow and maintenance.
• Securely fix the unit to a solid base.
• Install on anti-vibration supports.

Indoor Unit Installation

Mounting Plate Installation

1. Mark the plate position on the wall, ensuring it is level.
2. Drill 32mm deep holes.
3. Insert plastic anchors.
4. Fix the plate with the provided screws.
5. Check for secure mounting.

Note: Mounting plate design may vary, but installation method is the same.

Drilling for Pipe Passage

1. Determine the side for pipe interconnection based on the mounting plate position.
2. Insert a plastic pipe section through the wall hole for a clean finish.

Note: The hole should slope outwards to prevent moisture entry.

Electrical Connections

1. Lift the front panel.
2. Remove the connection terminal cover.
3. Follow the electrical diagram on the right side of the unit, under the front panel.
4. Connect wires to terminals, ensuring correct gauge and local safety standards.
5. The interconnection cable must be suitable for outdoor use.
6. The power plug must remain accessible for disconnection.
7. The unit must be properly grounded.
8. If the power cord is damaged, it must be replaced by an authorized service technician.

Note: Some models have factory-connected wires to the control PCB.

Refrigerant Piping

• Pipes can exit in three directions. Cut knockout covers as needed.
• Route pipes towards the wall passage, securing them with interconnection cables and the drain hose. Position the drain hose at the bottom for easy drainage.
• Do not remove pipe end caps until connection to prevent moisture and dust ingress.
• To extend pipes, unroll them as shown.

Connecting Pipes to Indoor Unit

• Remove end caps. Check for dirt and burrs.
• Insert flare nut and flare the pipe end.
• Tighten connections using two wrenches, turning in opposite directions.

Indoor Unit Condensate Drainage

Proper condensate drainage is crucial.

1. Place the drain hose at the bottom of the interconnection assembly, avoiding siphons.
2. Ensure the drain hose maintains a downward slope towards the auxiliary drain.
3. Do not curve the drain hose end or submerge it in water.
4. If pipes exit to the right, secure them to the rear of the unit with a bracket.
5. Insert the hose connection into its receptacle.
6. Press to secure the hose to the base.

Outdoor Unit Installation

• The outdoor unit must be securely mounted in a solid location.
• Consider electrical and piping connections when positioning the unit. Allow space for maintenance.
• Use appropriate screws for the mounting surface.
• Use oversized screws for vibration resistance.
• Install according to local and national regulations.

Outdoor Unit Condensate Drainage

Condensate and frost formed during heating can be drained via a pipe.

1. Attach the drain nozzle to the 25mm hole at the bottom of the unit.
2. Connect the drain hose to the nozzle, directing water to a convenient location.

Electrical Connections

1. Remove the connection box cover.
2. Connect cables to the terminal board, matching numbers with the indoor unit.
3. Refer to the electrical diagram on the back of the cover for verification.
4. Secure cables with the cable clamp.
5. Ensure an efficient ground connection.
6. Replace the connection cover.

Pipe Connection

• Attach flare nuts to the outdoor unit valves and tighten as per indoor unit procedure.
• Pay attention to the following to prevent leaks:
• Adjust flare nuts with the appropriate wrench. Do not damage pipes.
• Insufficient torque may cause refrigerant leaks. Excessive torque can cause leaks and damage the flare.
• Use a fixed wrench and a torque wrench for secure tightening. Refer to the table for correct torque values.

Purging the Pipes

Air and moisture in the refrigerant circuit can cause compressor failure. Before opening the valves, purge air and moisture using a vacuum pump.

1. Unscrew and remove valve caps.
2. Unscrew and remove the service valve cap.
3. Connect the vacuum pump hose to the service valve.
4. Connect the vacuum pump and run for 10-15 minutes to reach a vacuum of 10 mm of H.
5. With the pump running, close the pump valve and then turn off the pump.
6. Open the 2-way valve 1/4 turn for 10 seconds, then close it.
7. Check for leaks using soapy water or an electronic detector.
8. Disconnect the vacuum pump hose and fully open the 2-way and 3-way valves.
9. Replace and tighten all valve caps.

Final Steps

Indoor Unit Final Control

• Check correct ON/OFF and fan operation.
• Check correct operation in different modes.
• Check correct temperature and timer changes.
• Verify all indicator lamps function correctly.
• Ensure normal air deflector direction.
• Check proper condensate drainage.

Outdoor Unit Final Control

• Check for abnormal vibration or noise during operation.
• Determine if noise, airflow, or condensate drainage disturbs neighbors.
• Check for refrigerant leaks.

Note: The electronic control enables the compressor to start only three minutes after power is connected.

Installer Information

Fixed Speed Units Capacity (Btu/h)

Notes:

• (1) Observe outdoor unit label for data.
• (2) Minimum pipe length is 3m.
• (3) Additional Charge (g) = (Length - 5m) x Additional Gas Charge Factor (g/m).
• (*) Refer to table for Additional Gas Charge Factor per model.

Torque for Flare Protection Caps and Connections

Electrical Wiring Diagrams

Wiring diagrams may differ by model. Consult the diagram on the right side of the indoor unit's front panel and the rear of the outdoor unit's handle cover.

Cable Specifications

The fuse for the control board of indoor units 9K, 12K, 18K, 24K (220V) is 50T - 3.15A - 250V.

Maintenance

Regular maintenance is essential for optimal equipment efficiency.

Disconnect electrical power before performing any maintenance.

Indoor Unit - Air Filter

1. Lift the front panel.
2. Slide filters down and out.
3. Clean filters with water. For greasy filters, use lukewarm water (max 45°C). Dry in a cool, dry place.
4. Slide filters back into the unit with the panel open.
5. Close the front panel.

Deodorizing and electrostatic filters (if used) are not washable and must be replaced every 6 months.

Radiator Cleaning

1. Lift the front panel for easier cleaning.
2. Clean the indoor unit with a damp cloth (max 40°C) and mild soap. Do not use strong solvents or detergents.
3. If the outdoor radiator is obstructed, remove leaves and dirt, and clean with compressed air or water.

End of Season

1. Disconnect the unit.
2. Clean the air filters.
3. Run the unit in fan mode on a dry day for several hours to eliminate indoor humidity.

Changing Remote Control Batteries

When: Indoor unit does not beep, remote display is off.

How: Remove the rear cover, replace batteries respecting polarity (+/-). Use only new batteries. Remove batteries if the unit will not be used for an extended period.

ATTENTION: Dispose of batteries properly in designated collection points.

Troubleshooting

Problem Analysis

Immediate Shutdown Required

• Loud, strange noise during operation.
• Control board failure.
• Fuse or thermal breaker failure.
• Foreign objects or water inside the unit.
• Overheating cables or plugs.
• Strong odor from the unit.

Display Error Codes