5 easy STEPS to Install a Split Air Conditioner

Install split air conditioner

Here are 5 simple guide steps to install a split air conditioner in your place

Step 1:

When we want to install a split air conditioner, we first choose the appropriate location for the indoor and outdoor units as follows.

Indoor Unit:

Install a Split Air Conditioner
  • The wall must be capable of supporting the weight of the indoor unit so that it can be securely fastened with screws.
  • When determining the installation location, ensure there are no electrical wires or pipes behind the area where the copper pipes, electrical wires, and condensate drain will exit.
  • Mount the indoor unit at a suitable height above the room floor and below the ceiling to distribute air evenly throughout the room without any obstacles to airflow.
  • Minimize the distance between the indoor and outdoor unit installation locations as per the manufacturer’s instructions.

Outdoor Unit:

Install a Split Air Conditioner
  • Ensure the outdoor unit installation location on the wall can support its weight and choose the appropriate bracket for its weight. If installing it on a roof or garden, leave adequate space around it to allow for unrestricted airflow. Refer to the manufacturer’s instructions for appropriate spacing. Also, consider ease of access for maintenance purposes.
  • Install a split air conditioner in a location away from direct sunlight for extended periods during the day or provide appropriate shading.

Step 2

After determining the suitable location for installing the indoor unit, we proceed as follows.

  • Firstly, mount the rear bracket for the indoor unit ensuring it is perfectly level. Then, drill a hole with a diameter large enough to accommodate the insulated cooling pipes, electrical cables, and condensate drain hose. Thirdly, insert a plastic pipe of the same diameter into the hole, slightly angled downwards to facilitate water drainage from the hose to the outside.
  • Then, remove the plastic cover from the copper pipes on the indoor unit, allowing the compressed nitrogen gas inside to escape, indicating no leaks.
  • Connect the copper pipes to the indoor unit pipes, tighten the joints expertly according to the manufacturer’s instructions, and properly insulate the connections.
  • Connect the wires to the indoor unit’s control panel. These typically include four wires (phase (P), neutral (N), control (C), and earth (E)).
  • Gradually bend the pipes towards the outside and wrap the group of pipes, cables, and water hose together, then guide them through the opening to the outside.
  • Securely mount the indoor unit onto the bracket.

Step 3

After selecting the location for the outdoor unit on the wall, we proceed as follows.

  • Firstly, mount the external bracket onto the wall securely to support the weight of the outdoor unit.
  • secondly, fasten the outdoor unit to the bracket using the appropriate screws.
  • If you want to install a split air conditioner outdoor unit on the ground, place a vibration damper underneath it and mount the outdoor unit onto it.

Step 4

Connecting the Refrigerant Pipes and Electrical Cables to the air conditioner

  • Firstly, connect the refrigerant pipes to the outdoor unit’s inlet and outlet ports, tightening the connections as instructed by the manufacturer.
  • With the suction and discharge ports on the outdoor unit closed, pressure test the system with nitrogen from the charging port to check for leaks.
  • Afterwards, connect a vacuum pump to the charging port and evacuate the air from the pipes to remove any moisture.
  • Open the suction and discharge ports on the outdoor unit and verify there are no leaks.
  • If the refrigerant pipes exceed a certain length, add additional refrigerant as per the manufacturer’s instructions.

Step 5

Electrical Connection and Final Checks

  • Connect the electrical cables between the indoor and outdoor units, following the instructions provided with the device.
  • Ensure compliance with local electrical installation regulations.
  • Power on the air conditioner and test its operation at the desired temperature.
  • Check that all functions are working correctly.
  • Observe condensation forming on the suction pipe (larger pipe), indicating proper cooling.
  • Finally, measure the temperature difference between the suction and discharge lines and compare the pressures to standard refrigerant tables to verify cooling efficiency.

Additional Tips:

  • Frist thing to do before install a split air conditioner is to consult the manufacturer’s installation manual for specific instructions and safety precautions.
  • Seek assistance from a qualified HVAC technician if you lack experience or expertise.
  • Regularly maintain your air conditioner to ensure optimal performance and longevity.

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