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Haier AU282XHERA Installation Manual

R410a multi split series room air conditioner outdoor unit
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Please read this manual carefully before installing the units.
Please keep this manual safely for future use.





Summary of Contents for Haier AU282XHERA

  • Page 1: Outdoor Unit

    R410A MULTI SPLIT SERIES ROOM AIR CONDITIONER OUTDOOR UNIT INSTALLATION MANUAL NO.0010577255 Please read this manual carefully before installing the units. Please keep this manual safely for future use. AU282XHERA AU342XHERA...
  • Page 2: Table Of Contents

    Contents Cautions ... Safety precautions... Installation accessories... Choose the installation place... Installation dimensions(mm)... Installation drawings of indoor and outdoor units... Matching of the indoor and outdoor units ... Power source... Limitations on the installation ... Refrigerant piping work... Purging method: to use vacuum pump... Wiring work...
  • Page 3: Cautions

    Cautions Disposal of the old air conditioner Before disposing an old air conditioner that goes out of use, please make sure it's inoperative and safe. Unplug the air conditioner in order to avoid the risk of child entrapment. It must be noticed that air conditioner system contains refrigerants, which require specialized waste disposal.
  • Page 4 Cautions All electrical repairs must be carried out by qualified electricians. Inadequate repairs may result in a major source of danger for the user of the air conditoiner. Do not damage any parts of the air conditioner that carry refrigerant by piercing or perforating the air conditioner's tubes with sharp or pointed items, crushing or twisting any tubes, or scraping the coatings off the surfaces.
  • Page 5: Safety Precautions

    Safety precautions To ensure proper installation, please read this safety precautions carefully before the installation. After installation, start the unit correctly and ensure that you show the customer how to operate and maintain the units. WARNING! Incorrect operations may result in severe consequences of death or serious injuries. CAUTION! Incorrect operations may result in injuries or machine damages;...
  • Page 6: Installation Accessories

    Safety precautions (c) Where there is strong radiation. It will affect the unit's control system, causing malfunction of the unit. (d) Where there are flammable gas, dirt, and volatile matter (thinner, gasoline) exist, these items will cause a fire risk. Installation accessories The following accessories are supplied together with the outdoor unit.
  • Page 7: Installation Drawings Of Indoor And Outdoor Units

    Installation drawings of indoor and outdoor units 1. Do not connected the embedded branch piping and the outdoor unit when only carrying out piping work without connecting the indoor unit in ordor to add another indoor unit later. Make sure no dirt or mositure gets into eigher side of the embedded branch piping.
  • Page 8: Matching Of The Indoor And Outdoor Units

    Matching of the indoor and outdoor units WARNING! Combinations those marked * would not be applied where the temperature in winter is too low and in summer is too higher to avoid bad heating or cooling effect. For AU282XHERA Combination Remark...
  • Page 9 Matching of the indoor and outdoor units For AU342XHERA Combination Remark...
  • Page 10: Power Source

    (The shorter the refrigerant piping, the better the performance. Connect so that the piping is as short as possible. Shortest allowable length per room is 3m) Outdoor unit capacity class Piping to each indoor unit Total length of liquid piping between all units AU282XHERA AU342XHERA 25m max. 60m max.
  • Page 11 Limitations on the installation 3. Limitations values on the piping work . The piping length information, please refer the following table. Item Unit A, B, C,D liquid pipe Size of the liquid side connection pipe A, B, C,D Gas pipe Size of the gas side connection pipe L1 (one way) Pipe length when the compressor connects with two indoor units...
  • Page 12: Refrigerant Piping Work

    Refrigerant piping work 1. Selection of pipe To this unit, both liquid and gas pipes shall be insulated as they become low temperature in operation. Use optional parts for piping set or pipes covered with equivalent insulation material. Liquid pipe Gas pipe 2.
  • Page 13 Refrigerant piping work 4.Cutting and Flaring work of piping Pipe cutting is carried out with a pipe cutter and burs must be removed. After inserting the flare nut, flaring work is carried out. Correct 5.On drainage Please install the drain hose so as to be downward slope without fail. Please don't do the drainage as shown below.
  • Page 14: Purging Method: To Use Vacuum Pump

    Purging method: to use vacuum pump 1 .Detach the service portis cap of 3-way valve, the valve rod's cap for 2-way valve and 3-way valves, connect the service port into the projection of charge hose (low) for gaugemanifold. Then connect the projection of charge hose (center) for gaugemanifold into vacuum pump.
  • Page 15: Wiring Work

    Wiring work 1. Electric wiring Note: The air conditioner must use special circuit , and wiring by the qualified electrician according to the wiring rules specified in national standard. The grounding wire and the neutral wire shall be strictly separated. Connect the neutral wire with grounding wire is incorrect.
  • Page 16 Wiring work Crimp connection method for connection wire After connection,the wire must be fastened by wire cover. The wire cover shall press on the protection coat of the connection wire,as shown in right top figure. Note:When connecting the wiring,confirm the terminal number of indoor and outdoor units carefully. Incorrect wiring will damage the controller of air conditioner or the unit can not operate.
  • Page 17: Wiring Work

    Wiring work 5. Example wiring diagram. Indoor unit D 1(L) 2(N) Power supply cable: H05RN-F 3G (5.0~8.0)mm Communication cable (Shield wire): H05RN-F 2 X (0.75~1.5)mm Connecting cable: H05RN-F 3G (1.5~2.5)mm Please refer to the indoor unit installation manual to find detailly how to set and check the communication address.
  • Page 18: Test Running

    Test running Before starting the test running, please confirm the following works have been done successfully. 1) Correct piping work; 2) Correct wiring work; 3) Correct match of indoor and outdoor unit; 4) Proper recharge of refrigerant if needed; 5) Correct indoor unit addresses setting. Make sure that all the stop valves are fully open.
  • Page 19: Trouble Shooting

    Trouble shooting FAILURE STATE OF CODE LED 5-4-3-2-1 Take off the plastic cover on the right side of the unit, you can find the LEDs near the communication terminal. Symbol means the LED is ON, and symbol means the LED is OFF. TROUBLE SHOOTING Faulty defrost sensor Te...
  • Page 20 HAIER GROUP Qingdao Haier Air Conditioner Electric Co., Ltd. Address: Haier Garden, Qianwangang Road, Economic Development Zone, Qingdao, Shandong 266555, P.R.China Web Site:

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