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REFRIGERANT PIPING CONNECTION
6
6.1 Pipe Length
When connecting the refrigerant piping, DO NOT let substances or gases other than the specied refrigerant
enter the unit. The presence of other gases or substances will lower the unit’s capacity,and can cause abnormally
high pressure in the refrigeration cycle. This could cause an explosion and/or injury.
Thelengthofrefrigerantpipingwillaecttheperformanceandenergyeciencyoftheunit.Nominal
eciencyistestedonunitswithapipelengthof16.5ft(5m).InNorthAmerica,thestandardpipe
lengthis25ft(7.5m).Aminimumpiperunof9.8ft(3m)isrequiredtominimizevibrationand
excessive noise.
Refertothetablebelowforspecicationsonthemaximumlengthanddropheightofpiping.
NOTE ON PIPE LENGTH
Maximum Length and Drop Height of Refrigerant Piping per Unit Model
Model Capacity(BTU/h) Max.Length(ft/m) Max.DropHeight(ft/m)
R410A Inverter Split Air
Conditioner
< 15,000 82 ft (25 m) 33 ft (10 m)
≥ 15,000 and < 24,000 98.5 ft (30 m) 66 ft (20 m)
≥ 24,000 and < 36,000 164 ft (50 m) 82 ft (25 m)
36,000 213 ft (65 m) 98 ft (30 m)