Installation Manual

Model Numbers

• E4HL5018A1000A
• E4HL5024A1000A
• E4HL5030A1000A
• E4HL5036A1000A
• E4HL5042A1000A
• E4HL5048A1000A
• E4HL5060A1000A

NOTE: "Graphics in this document are for representation only. Actual model may differ in appearance.”

NOTE: Appearance of unit may vary. Installation must be performed in accordance with the requirements of NEC and CEC by authorized personnel only.

All phases of this installation must comply with National, State and Local Codes.

This document is customer's property and is to remain with this unit. Please return it to customer with service information upon completion of work.

These instructions are intended as an assist to qualified and licensed personnel for proper installation, adjustment and operation of ECM air handler units. Read it thoroughly before attempting installation or service work.

Failure to follow these instructions may result in fire, electrical shock, property damage, personal injury or death.

The instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with the installation.

AHRI CERTIFIED® Unitary Small AC, AHRI Standard 210/240. For verification, visit www.ahridirectory.org. Certification applies only when the complete system is listed with AHRI.

AHRI CERTIFIED® Unitary Small HP, AHRI Standard 210/240. For verification, visit www.ahridirectory.org. Certification applies only when the complete system is listed with AHRI.

ETL US LISTED Intertek

Document Number: 88-E4HL5001-1B-EN

Table of Contents

1. Safety
2. Accessories
3. Installation Overview
4. Outdoor Unit Installation Instructions
5. Refrigerant Piping Connection
6. Electric Wiring
7. Refrigerant Line Brazing
8. Evacuation
9. Test Run
10. Safety Precaution
11. Troubleshooting
12. Outdoor Unit Function
13. Service Manual

1. Safety

Read the following safety instructions before installing the unit or doing service work.

WARNING may cause personal death or serious injury.

CAUTION may lead to injury or structural damage under some conditions.

2. Accessories

NOTE: The air conditioning system comes with the following accessories. Use all of the installation parts and accessories to install the air conditioner. Improper installation may result in water leakage, electrical shock and fire, or cause the equipment to fail.

Table 1. Installation Accessories

3. Installation Overview

1. Read The Safety Precaution
2. Install The Indoor Unit
3. Install The Outdoor Unit
4. Install The Drainage Pipe
5. Install The Refrigerant Pipe
6. Electrical Wiring
7. Air Evacuation
8. Perform The Test Run

4. Outdoor Unit Installation Instructions

4.1 Select Installation Location

The outdoor unit should be installed in a location that meets the following requirements:

• Keep the outdoor unit as close to the indoor unit as possible.
• Make sure there is enough space for installation and maintenance.
• The installation area must be dry and well ventilated.
• Make sure that the location of the unit is not affected by snow, leaf deposits or other seasonal debris.
• In extreme blizzard weather, it is necessary to install auxiliary snow protection facilities (snow cover) and manual snow clearing in order to avoid freezing on the surface of heat exchanger caused by snow cover unit.
• There must be enough space to install connecting pipes and cables and access them for maintenance.
• The area must be free of combustible gases and chemicals. The length of pipeline between outdoor unit and indoor unit shall not exceed the maximum allowable pipeline length.
• If possible, do not install the unit in direct sunlight.
• If possible, make sure the device is away from the property of your neighbors so that the noise from the device does not interfere with them.
• Air inlet and air outlet shall not be blocked or exposed to strong wind. If the location is exposed to strong winds (for example, near the coast), you must place the unit against the wall to block the wind. If necessary, use a sunshade.
• Install indoor and outdoor equipment, cables and wires at least 3.28 ft away from TV or radio to prevent static electricity or image distortion. Depending on the radio waves, a distance of 3.28 ft may not be enough to eliminate all interference.

CAUTION

• Be sure to remove any obstacles that may block air circulation.
• Make sure you refer to Length Specifications to ensure there is enough room for installation and maintenance.

4.2 Body Dimensions

Table 2. Unit Dimensions

4.3 Install Outdoor Unit

4.3.1 Single Outdoor unit

To ensure the normal operation of the unit, ensure that the outdoor unit installation space meets the following installation dimensions:

For details about how to install a single outdoor units, see Figure 4.3:

Table: Clearance Requirements (inches)

4.3.2 Multiple outdoor unit side by side

To ensure the normal operation of the unit, ensure that the outdoor unit installation space meets the following installation dimensions:

For details about how to install multiple outdoor units, see Figure 4.4:

Table: Clearance Requirements (inches)

4.4 Outdoor Unit Condensed Water Drainage(Optional)

The condensed water and the ice formed in the outdoor unit during heating operation can be drained away through the drain pipe:

1. Fasten the drain port in the 0.98" hole placed in the part of the unit as shown in the picture.
2. Connect the drain port and the drain pipe. Pay attention that water is drained in a suitable place.

CAUTION

• Insulate all piping to prevent condensation.
• Do not pull on the drain strongly, as this may cause it to disconnect.
• If the drain is bent or installed incorrectly, water may leak and cause the water level switch to fail. In heating mode, the outdoor unit will drain water.
• Make sure that the drain hose is placed in a suitable area to avoid water damage and slippage due to freeze drain water.
• The drainpipe is used to drain water. Improper installation may cause damage to equipment and property.

4.5 Drilling Hole in Wall

You must drill a hole in the wall for the refrigerant piping, and the signal cable that will connect the indoor and outdoor units.

1. Choose the location of the wall hole according to the location of the outdoor unit.
2. Use a 2.5" core drill to drill holes in the wall.
3. Place the cuff on the hole. This protects the edge of the hole and helps seal the hole when the installation process is complete.

NOTE: When drilling the wall hole, make sure to avoid wires, plumbing, and other sensitive components.

5. Refrigerant Piping Connection

5.1 Safety Precaution

WARNING

• All field piping must be completed by certified technicians and must comply with local and national regulations.
• When installing the refrigeration system, ensure that air, dust, moisture or foreign substances do not enter the refrigerant circuit.
• After completing the installation work, make sure that there are no refrigerant leaks.

5.2 Pipe Dimension and Ways of Installation

Outdoor pipe dimension and ways of install (in sequence of cooling capacity)

Table 3. Refrigerant Line Size

NOTE: Ensure that the length of the refrigerant pipe, the number of bends, and the drop height between the indoor and outdoor units meets the requirements.

Table 4. Line Set Length

5.3 Oil Traps

CAUTION

1. If the indoor unit is installed higher than the outdoor unit: If oil flows back into the outdoor unit's compressor, this might cause liquid compression or deterioration of oil return. Oil traps in the rising gas piping can prevent this. An oil trap should be installed every 32.8 ft of vertical suction line riser.

2. If the outdoor unit is installed higher than the indoor unit: It is recommended that vertical suction risers not be upsized. Proper oil return to the compressor should be maintained with suction gas velocity. An oil trap should be installed every 20 ft of vertical suction line riser.

5.4 Refrigerant Piping Connection Instructions

CAUTION

• Do not install the connecting pipe until both indoor and outdoor units have been installed. Insulate both the gas and liquid piping to prevent water leakage.
• Do not deform pipe while cutting. Be extra careful not to damage, dent, or deform the pipe while cutting. This will drastically reduce the heating efficiency of the unit.

(1) Cut pipes

When preparing refrigerant pipes, take extra care to cut and flare them properly. This will ensure efficient operation and minimize the need for future maintenance.

1. Use the piping kit accessory or the pipes purchased locally.
2. Measure the distance between the indoor and the outdoor unit.
3. Cut the pipes a little longer than measured distance.

(2) Remove burrs

Burrs can affect the air-tight seal of refrigerant piping connection. They must be completely removed.

1. Completely remove all burrs from the cut cross section of pipe/tube.
2. Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the tubing.

(3) Flaring work

Carry out flaring work using flaring tool as shown below.

Table 5. Flaring Work Dimension

Firmly hold copper pipe in a die in the dimension shown in the table above.

(4) Check

1. Compare the flared work with figure below.
2. If flare is noted to be defective, cut off the flared section and do flaring work again.

NOTE: Connect the copper pipes to the indoor unit first, then connect it to the outdoor unit.

(5) You should first connect the low-pressure pipe, then the high-pressure pipe.

1. Align the center of the two pipes that you will connect.
2. Tighten the flare nut as tightly as possible by hand.
3. Using a wrench, grip the nut on the unit tubing.

NOTE: Use two wrenches to connect the pipe with indoor/outdoor pipes to avoid the copper pipe cracking.

4. While firmly gripping the nut, use a torque wrench to tighten the flare nut according to the torque values.

Table 6. Torque Values

5. Insert the connecting pipe of the indoor unit into the reamer transfer nozzle flaring of the outdoor unit, and braze the connecting port.

CAUTION

• Ensure to wrap insulation around the piping. Direct contact with the bare piping may result in burns or frostbite.
• Make sure the pipe is properly connected. Over tightening may damage the bell mouth and under tightening may lead to leakage.

6. Insulate all the piping, including the gas valve of the outdoor unit.

7. Open the stop valves of the outdoor unit to start the flow of the refrigerant between the indoor and outdoor unit.

CAUTION

• Check to make sure there is no refrigerant leak after completing the installation work. If there is a refrigerant leak, ventilate the area immediately and evacuate the system (refer to the Air Evacuation section of this manual).

6. Electric Wiring

6.1 Outdoor Unit Wiring

CAUTION

• Please wire in strict accordance with the wiring diagram.
• The refrigerant circuit can become very hot. Keep the interconnection cable away from the copper tube.
• Field wiring must comply with the National Electric Code and any applicable local ordinance.
• Disconnect all power to unit before installing or servicing. More than one disconnect switch may be required to de-energize the equipment. Hazardous voltage can cause severe personal injury or death.

Table 7. Minimum Cross-Sectional Area of Power and Signal Cables

(2) Power Wiring

It is important that proper electrical power is available for connection to the unit model being installed. Refer to the unit nameplate, wiring diagram and electrical data in the installation instructions.

• If required, install a branch circuit disconnect of adequate size, located within sight of, and readily accessible to the unit.
• Supply circuit power wiring must be 167°F minimum copper conductors only. Refer to electrical data in this section for ampacity, wire size and circuit protector requirements. Supply circuit protective devices may be either fuses or “HACR” type circuit breakers.

(3) Control Wiring

Class 2 low voltage control wiring should not be run in conduit with main power wiring and must be separated from power wiring, unless class 1 wire of proper voltage rating is used.

• Low voltage control wiring should be color-coded 18 AWG. For lengths longer than 100 ft, 16 AWG wire shall be used.
• Refer to wiring diagrams attached to indoor and outdoor sections to be connected.
• Make sure separation of control wiring and power wiring has been maintained.

*:Reversing valve energizes in the heat pump heating mode

Table 8. Thermostat Terminal Defination Chart.

NOTES:

1. Be sure power supply agrees with equipment nameplate.
2. Power wiring and grounding of equipment must comply with local codes.
3. Some thermostats may use W2/AUX for heat pump.
4. If a single-stage temperature controller is used, Y1 and Y2 shall be short-circuited.
5. When the thermostat is applied to the system, the setting should be as below: Reversing valve operating mode - energized in heating.

WARNING The unit must be permanently grounded. Failure to do so can result in electrical shock causing personal injury or death.

• Grounding may be accomplished by grounding metal conduit when installed in accordance with electrical codes to the unit cabinet. Grounding may also be accomplished by attaching ground wire(s) to ground lug(s) provided in the unit wiring compartment.
• Use of multiple supply circuits require grounding of each circuit to lug(s) provided in the unit.

Figure 6-3 Furnace diagram for control wiring connection

7. Refrigerant Line Brazing

7.1 Braze the Refrigerant Lines

STEP 1- Remove caps or plugs. Use a deburring tool to debur the pipe ends. Clean both internal and external surfaces of the tubing using an emery cloth.

STEP 2- Remove the pressure tap cap and valve cores from both service valves.

STEP 3- Purge the refrigerant lines and indoor coil with dry nitrogen.

STEP 4- Wrap a wet rag around the valve body to avoid heat damage and continue the dry nitrogen purge. Braze the refrigerant lines to the service valves. Continue the dry nitrogen purge. Do not remove the wet rag until all brazing is completed.

Important: Remove the wet rag before stopping the dry nitrogen purge.

STEP 5- Replace the pressure tap valve cores after the service valves have cooled.

7.2 Refrigerant Line Leak Check

STEP 1- Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen.

STEP 2- Check for leaks by using a soapy solution or bubbles at each brazed location. Remove nitrogen pressure and repair any leaks before continuing.

7.3 Additional Refrigerant Charge

CAUTION

• Refrigerant charging must be done after wiring, vacuuming and leak testing.
• Do not exceed the maximum allowed amount of refrigerant or overcharge the system. This will damage or affect the function of the device.
• Charging with mismatched refrigerant can cause an explosion or an accident. Make sure that a suitable refrigerant is used.
• The refrigerant container must be opened slowly. Always use guards when charging the system.
• Do not mix refrigerant types.
• Some systems require additional refrigerant charge depending on the length of the pipe. The standard pipe length of this air conditioner is 24.6 feet. The following table can be used to calculate the additional refrigerant to be charged.

Table 9. Pipe Size and Additional Refrigerant

8. Evacuation

8.1 Evacuate the Refrigerant Lines and Indoor Coil

Important: Do not open the service valves until the refrigerant lines and indoor coil leak check and evacuation are complete.

STEP 1- Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump.

STEP 2- Observe the micron gauge. Evacuation is complete if the micron gauge does not rise above 500 microns in one (1) minute.

Once evacuation is complete, blank off the vacuum pump and micron gauge, and close the valves on the manifold gauge set.

9. Test Run

9.1 Precaution

The test run needs to be performed after the entire system is completely installed. Before performing the test, please confirm the following points:

• The indoor unit and outdoor unit are installed correctly according to the instructions.
• The electrical wiring is properly connected.
• Make sure there are no obstacles near the air conditioner. These obstacles may cause the air conditioner to malfunction or degrade performance.
• The refrigeration system has no leakage.
• The drain pipe has been installed as required.

CAUTION Failure to perform the test run may result in unit damage, property damage or even personal injury.

9.2 Test Run Instructions

1. Open both the liquid and gas stop valves.
2. Turn on the main power switch and allow the unit to warm up.
3. Set the unit to Cool or Heating mode.
4. For the Outdoor Unit:
   • Check if there is leak in the refrigerant system.
   • Check if the dip-switch setting is correct.
   • Ensure no abnormal vibration and noise during operation.
   • Ensure the wind, noise and water that are generated by the unit do not affect the surrounding environment or cause any safety risks.
   • Check whether the outdoor unit operating mode is displayed correctly.

NOTE: If the unit malfunctions or does not operate according to your expectations, please refer to the Troubleshooting section of the Owner's Manual before calling customer service.

1. When the unit operates for the first time after installation or re-use after long-term power outage, the unit should be powered on and preheated for 8 hours before starting operation.

2. If the unit malfunctions or does not operate according to your expectations, please refer to the Troubleshooting section of the Owner's Manual before calling customer service.

10. Safety Precaution

WARNING This indication shows the possibility of causing death or serious injury.

CAUTION This indication shows the possibility of causing injury or damage to properties only.

NOTE:

1. Injury means causing harmed, burned, electrical shocked, but not serious for hospitalization.
2. Damage of property means disrepair of property, material.
3. Carry out test running to confirm that no abnormality occurs after the installation. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

Operating Conditions

Use the air-conditioner under the following temperature:

If the air conditioner runs for a long time in "COOLING" mode at air relative humidity higher than 80% (doors or windows opened), dew may generate and drip near air outlet.

Noise Pollution

• Install the air conditioner in a place that can bear its weight in order to operate more quietly.
• Install the outdoor unit in a place where the air discharged and the operation noise do not annoy your neighbors.
• Do not place any obstacles in front of the outlet of the outdoor unit.

Features of Protector

1. The protective device will trip at following cases:
   • Stop the appliance and restart it at once or change other modes during operation, you have to wait 3 minutes before restarting.
   • After switching on the power circuit breaker and then turn on the air conditioner at once, you have to wait about 3 minute/20 seconds (some models).
2. In case all operations have stopped, you need:
   • Press "ON/OFF" button on the thermostat or remote controller again to restart it.
   • Set TIMER once again if it has been canceled.

Inspection

After a long time of operation, the air conditioner should be inspected for the following items:

• Abnormal heating of the power supply cord and plug or even a burnt smell.
• Abnormal operating noise or vibration.
• Water leakage from indoor unit.
• Metal cabinet electrified.

Stop using the air conditioner if above problem happened.

It is advisable that the air conditioner should be given a detail check-up after using for five years even if none of the above happen.

Feature of HEATING Mode

Preheat

When the unit is installed and operated for the first time in cold weather in winter or reused after long-term power failure, the unit should be powered on and preheated for 4h before starting operation.

Snow protection

In extreme blizzard weather, it is necessary to install auxiliary snow protection facilities (snow cover) and manual snow clearing in order to avoid freezing on the surface of heat exchanger caused by snow cover unit.

Defrost

In "HEATING" operation the appliance will defrost automatically. This procedure lasts 2 ~ 10 minutes, then returns to "HEATING" mode automatically. During defrosting, indoor fan stop running and return to heating mode operation automatically when defrosting has finished.

11. Troubleshooting

CAUTION If one of the following conditions occurs, switch off the power supply immediately and contact your dealer for further assistance:

• The operation light continues to flash rapidly after the unit has been restarted.
• The unit continually trips fuses or circuit breakers.
• A foreign object or water enters the air conditioner.
• The indoor unit leaks.
• Other abnormal situations.

11.1 Common Problems

The following symptoms are not a malfunction and in most situations will not require repairs.

11.2 Troubleshooting Advice

When troubles occur, please check the following points before contacting a repair company.

12. Outdoor Unit Function

(1) Cooling only and heat pump switch

This switch allows the user to choose between heat pump or cooling only operation. If the heat pump operation is selected, the unit will operate in both heating and cooling. If cooling only operation is chosen, heating will be disabled.

The dip-switch is located on the outdoor unit main board. Heat pump operation is the default selection with the SW1-1 located at the digit end (down). To switch to cooling only operation, set the SW1-1 to the ON position.

(2) Unit Capacity Adjustment

This switch allows the technician to adjust the capacity of the unit during installation. The default setting (SW1-2 at the digit end (down)) represents 100% capacity. The capacity can be adjusted to 75% by positioning the SW1-2 to the ON position.

Table 10. The Outdoor Unit Dip-Switch Function

Note: The dip-switch should be adjusted only when the unit is powered off. If the dip-switch is activated when the unit is powered on, there will be no change until it is power cycled.

(1) ODU Operation Mode Display

This display enables the technician to observe the unit's mode of operation. When the unit is running in normal condition, the left and center positions on the digital display will not be illuminated. The right position of the digital display will indicate the ODU operation mode. Refer to the following chart for the indicators of the different modes.

S3 is the indicator for the ODU operation mode, the display description is as below:

(2) Error code display

The same digital display is used for error codes using the left and center positions. In the case of multiple failures or protections, the error codes will alternate on the display. Please refer to the list of error codes in the following chart.

Error Code List

13. Service Manual

For more information, please scan the QR code for the service manual.

[QR code for Side Discharge Service Manual]

About Trane and American Standard Heating and Air Conditioning

Trane and American Standard create comfortable, energy efficient indoor environments for residential applications. For more information, please visit www.trane.com or www.americanstandardair.com

The AHRI Certified mark indicates company participation in the AHRI Certification program. For verification of individual certified products, go to ahridirectory.org.

The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

Document Number: 88-E4HL5001-1B-EN

Date: 08 Sep 2023

Supersedes: 88-E4HL5001-1A-EN (Apr 2023)

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