Samsung AM TXMDEH Series Installation Manual

21Connection by header jointgOutdoor unitHeader jointIndoor unitConnection by Y-joint/header jointH2H1fcgOutdoor unitIndoor unitHeader jointY-jointClassification Header joint connection Y-joint / header joint connectionMaximumallowablelength ofpipeOutdoorunit ~Indoor unitsActual LengthThe distance between an outdoor unit and the farthest indoor unit ≤ 150 mEx) 8 indoor unitsa+g≤ 150 mEx) 8 indoor unitsa+b+c ≤ 150 mEquivalent length The distance between an outdoor unit and the farthest indoor unit ≤ 175 mMain pipe length The main pipe(a) from the outdoor unit to the first Y-joint should be less than110 m.Total length The sum of total length of pipes should be less then 300 m.MaximumallowableheightOutdoorunit ~Indoor unitsHeight H1: The difference in height between an outdoor unit and indoor unit < 50 mHeight H2: The difference in height between indoor units ≤ 15 mMaximum allowablelength after Y-joint Actual LengthThe distance between the headerjoint and the indoor unit ≤ 40 mEx) b, c ~ f, g ≤ 40 mThe distance between the first Y-jointand the farthest indoor unit ≤ 40 mEx) 8 indoor unitsb+c, d+g ≤ 40 m❋ When the equivalent length between an outdoor unit and the farthest indoor unit exceeds 90 m, upgrade the lowpressure pipe of the main pipe one step.