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Summary of Contents for AHRI U-match Series
- Page 1 Installer’s Manual DC Inverter U-match Series for R410A Unitary Split Air Conditioner Models: HP Outdoor Units: HP Indoor Units: 4MXA2024A10NUA 4TXD2036A10NUA 4MXA2036A10NUA 4TXD2060A10NUA 4MXA2048A10NUA 4MXA2060A10NUA April 2022 MS-SVN083A-EN...
- Page 2 Warnings and Cautions Warnings are provided to alert others of the potential hazards that could result in severe personal injury or death, while cautions are designed to alert others of the conditions that could result in minor or moderate injury. Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.
- Page 3 NOTICE Use appropriate oil with R410A systems. Oil type is found at the bottom of Connection Pipe Requirements table (included in the outdoor unit installation manual). R-410A systems utilize POE (Polyolester) or PVE(Polyvinyl Ether) oil. Both oil types absorb moisture readily, yet, lubrication properties vary.
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Page 4: Table Of Contents
Contents Safety Precautions ..........................5 Product Introduction ..........................7 Operating Range ..........................7 Standard Accessories ........................7 Installation ............................8 Installation Preparation ........................8 Selection of Installation Location ....................8 Unit Dimension ...........................8 Unit Installation ..........................9 Outdoor Unit Installation ......................9 Condensate Management of the Outdoor Unit ..............10 Connection Pipe Installation .................... -
Page 5: Safety Precautions
Safety Precautions This mark indicates a potentially hazardous situation which, if not avoided, could WARNING result in death or serious injury. This mark indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It may also be used to alert against unsafe CAUTION practices. - Page 6 Safety Precautions Before system start-up, attach the refrigerant piping securely. Failure to do so will introduce noncondensables into the system when the compressor is running, causing abnormal pressure in the refrigeration cycle which could lead to injury and damage. Establish a complete ground. Do not ground the unit to a utility pipe, arrester, or telephone ground.
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Page 7: Product Introduction
Product Introduction Operating Range Cooling Heating Outdoor Temperature 5°F(-15°C)~129.2°F (54°C) -22°F (-30°C)~75.2°F (24°C) Standard Accessories Outdoor Unit Accessories Name Appearance Usage To plug the unused Drain Plug drain hole Drainage To connect with the Connecter hard PVC drain pipe... -
Page 8: Installation
Installation Installation Preparation Selection of Installation Location WARNING The unit must be installed level with enough structural support for the weight of the unit and be securely fastened. Do not install where there is the danger of combustible gas leakage. Selection of installation location for outdoor unit (Select a location pursuant to the following condition). -
Page 9: Unit Installation
Installation 4TXD2060A10NUA Unit: inch(mm) Dimensions Model 42-3/4 16-7/8 53-3/4 24-1/2 15-1/2 14-1/2 4TXD2060A10NUA (1085) (427) (1365) (620) (395) (370) Unit Installation NOTICE The outdoor unit does not have a TXV (thermal expansion valve), please make sure there is a throttling valve (which throttles the unit when it operates in cooling mode and opens fully when it operates in heating mode) in the indoor unit (air handler or A coil). -
Page 10: Condensate Management Of The Outdoor Unit
Installation Select the installation location that provides easy access to the indoor unit. 1. Make sure the location can support at least four times the weight of the unit. 2. Secure the outdoor unit on the selected base location with expansion screws. 3. -
Page 11: Connection Pipe Installation
Installation Connection Pipe Installation Installation Notice and Requirement on Connection Pipe Installation method: Connect the connection pipes first to the unit. When bending a connection pipe, be careful not to damage the pipe. Do not over-tighten the screw nut, otherwise leakage will occur. -
Page 12: Flaring Process
Installation Flaring Process 1. Hold the pipe downward to prevent cuttings from entering the pipe. 2. Using an appropriate tube cutter and deburring tool, cut and deburr the refrigerant pipe. 3. Remove the flare nuts at the stop valve of the outdoor unit and inside the accessory bag of the indoor unit, put them onto the refrigerant pipe as shown below then flare the refrigerant pipe with a flaring tool. -
Page 13: Refrigerant Piping At The Outdoor Unit
Installation NOTICE To prevent distortion and breaking of the pipe, bend the pipe with a radius of curvature of 6 in. (150 mm) or more. Use a tubing bender when forming the copper tubing into a bend. If the pipe is bent repeatedly at the same place, it will break. CAUTION Connect the gas pipe after connecting the liquid pipe completely. -
Page 14: Piping Requirements
Installation Piping Requirements If the outdoor unit is installed lower than the indoor unit: 1. A drain pipe should be above ground and the end of the pipe should not dip into water. 2. Taping pipes must be done from bottom to top. Do not wrap too tightly to avoid compression of the insulation, otherwise its effectiveness is reduced. -
Page 15: Screw Connection
Installation Screw Connection Pipe Diameter inch (mm) Tightening Torque ft-lb (N-m) Ø 1/4 (6.35) 11.06 - 22.13 (15 - 30) Ø 3/8 (9.53) 25.82 - 29.5 (35 - 40) Ø 1/2 (12.7) 33.19 - 36.88 (45 - 50) Ø 5/8 (15.88) 44.25 - 47.94 (60 - 65) Ø... - Page 16 Installation Evacuation is not completed until the micron gauge does not rise above 500 microns within one minute after achieving 350 micron pressure vacuum. 6. After evacuation is complete, additional charge is to be added. a) If no additional charge is required, break the vacuum with refrigerant, then remove the gauge connectors.
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Page 17: Electrical Installation
Installation Electrical Installation Requirement and Notice on Electrical Installation WARNING The electrical installation for the air conditioner should observe the following requirements: The electrical installation must be conducted by trained personnel and done according to the National Electric Code in addition to local rules and regulations. The electric circuit must be equipped with a circuit breaker with sufficient capacity. - Page 18 Installation Unit: mm(inch) WARNING Failure to follow this Warning could result in property damage, serious personal injury, or death. Before working, check whether the indoor unit and thermostat are powered on. Match the terminal numbers and wire colors with the colors indicated in the indoor unit. Wrong wire connection may burn the electrical components.
- Page 19 Installation Table 1. Wires of Outdoor Unit NOTE: Suggest using thermostat TCONT824AS52DB. Thermostat NOTES: • Y means Compressor control signal for the outdoor unit; • B which is energized under the heating mode means 4-way valve control signal; • D means defrosting signal; •...
- Page 20 Installation Remove the front panel of the outdoor unit and connect the power wiring and thermostat wiring as shown below. Single-phase unit: 4TXD2036A10NUA Connect the thermostat Connect the thermostat wiring through here. wiring through here. Connect the power wiring through here. Connect the power wiring through here.
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Page 21: Check After Installation
Installation Single-phase unit: 4TXD2060A10NUA Power wiring and thermostat wiring should be fixed with wire clamps. Connect the power wiring through here. Connect the thermostat wiring through here. Check after Installation Problems might happen due to Items to be checked Check improper installation Check if the unit has been installed correctly. -
Page 22: Test Running
Installation Test Running Preparation before Connecting the Power 1. Never power on the unit until all the installation work has been done. 2. All the control circuit and wiring has been connected correctly and is secure. Valves on the gas and liquid line should be completely open. 3. -
Page 23: Maintenance
Unit Maintenance Failures Not Caused by Faults of the AC If your air conditioner fails to function normally, check the following items: Problem Cause Corrective measure If you turn off the unit and then immediately turn it on, in order to protect the compressor Wait for 3 minute time delay. -
Page 24: Error Code
Maintenance Error Code If the LED displayer on mainboard of outdoor unit displays an error code, refer to the error code meaning stated in the following table. Error code Error Compressor high-pressure protection Compressor low-pressure protection. Compressor air discharge high-temperature protection. Condenser temperature sensor error Outdoor ambient temperature sensor error Discharge temperature sensor error... -
Page 25: Unit Maintenance
Maintenance Unit Maintenance This product is designed for dependable service; however, periodic maintenance should be scheduled and conducted by trained professional service personnel. This service should be conducted at least annually, and should include testing and inspection of electrical and refrigerant components. - Page 26 N0.236 3097844 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.
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Questions and answers
How do you adjust the temperature range to the heater does not run in cooler weather?
To prevent the AHRI U-match Series heater from running in cooler weather, adjust the temperature setting at the thermostat to a lower value, so the system does not activate heating unnecessarily.
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