ENGLISH21AAConnecting the refrigerant pipeRefrigerant piping systemOuter diameter [mm] Minimum thickness [mm] Temper gradeø6 35 0 7C1220T-Oø9 52 0 7ø12 70 0 8ø15 88 1 0ø15 88 0 8 C1220T-1/2HORC1220T-Hø19 05 0 9ø22 23 0 9 Temper grade and minimum thickness of the refrigerant pipeItems Maximum allowable lengthSingle installation DPM installationApplicable outdoor unit modelsAC160JXAFKHAC160JXAFNHAC180JXA✴NHAC200KXAPNHAC250KXAPNHAC200KXAPNHAC250KXAPNHTotal pipe length (L1+…+Ln+1+a+b) - 75 mMain pipe (L1) 75 m 75 mMax distance among indoor units (D) - 10 mMax length after branch - 15 mMax height difference between outdoor and indoor units (h1) 30 m 30 mMax height difference among indoor units(h2) - 0 5 mMax Pipe length difference among indoor units after branch[L2-L3 or L2-L4 or L2-L5 or a-b or (a+L2)-(b+L4) or (a+L3)-(b+L5)] - 5 m❋❋ "n" means the number of indoor unit connection of DPMindoorindoorindooroutdoor outdooroutdoorindoorindoorindoorindoorindoorindoorindooroutdoorL1L1L2L2DDDDh2h2L3L3L4L4L5L1abDL1L2L3h1h2h1h1h1n=1n=2n=3n=4❋❋ Use a joint kit that is only for DPM• Make sure to use C1220T-1/2H (Semi-hard) pipe for more than Ø19.05mm. In case of using C1220T-O (Soft)pipe for Ø19 05mm, pipe may be broken, which can result in an injury