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ENGLISH
To prevent foreign materials or water from entering the pipe, storing method and sealing method (especially during
installation)is very important. Apply correct sealing method depending on the environment.
Exposure place Exposure time Sealing type
Outdoor
Longer than one month Pipe pinch
Shorter than one month Taping
Indoor - Taping
Temper grade and minimum thickness of the refrigerant pipe
Outer diameter (mm) Minimum thickness (mm)
Material
Ø6.35 0.7
Annealed
Ø9.52 0.7
Ø12.70 0.8
Ø15.88 1.0
Ø19.05 0.9
Drawn
Ø22.23 0.9
Caution
• For pipes larger than Ø 19.05, drawn type (C1220T-1/2H or C1220T-H) type copper pipe must be used. If a
annealed type (C1220T-O) copper pipe is used, pipe may break due to its low pressure resistance and cause
personal injury.
Keeping refrigerant pipe