piping

Selection

• Use the correct pipe size  .
  
  • Pipe thickness can range from 0.6mm to 0.8mm, depending on the refrigerant used.
    
  • Pipe diameter are dependent on the air-conditioner's capacity and type of refrigerant used, as shown in the example below.
    
    

    Cooling Capacity	Type of Refrigerant	Pipe Diameter (inches)
    9,000 BTU/hr	R22, R410a	1/4 - 3/8
    12,000 BTU/hr	R22	1/4 - 1/2
    -	R410a	1/4 - 3/8
    18,000 BTU/hr	R22, R410a	1/4 - 1/2
    24,000 BTU/hr	R22	3/8 - 5/8
    -	R410a	1/4 - 1/2

Installation

• Limit the distance between the indoor and outdoor units to keep the length of the connecting pipes as short as possible.

• Ensure that pipes are well insulated. Where insulation is not possible, use a cork tape to cover up any exposed pipe ‚ .

• Do not install 2 or more pipes within a single insulation sleeve ƒ .

• Limit the number of elbow joints and bends.
  
  
• Ensure that a proper drainage system has been put in place. Drainpipes „ should be installed with a descending gradient.
  
  
• Ensure joints … are properly tightened and free from defects to prevent refrigerant leakage.

Maintenance

• Check for leaks in the piping joints.

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