Outdoor Unit
Outdoor Unit
Outdoor Unit
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6.2.2 Header MethodExample : 6 Indoor <strong>Unit</strong>s connected: <strong>Outdoor</strong> <strong>Unit</strong>: 1st branch: Indoor <strong>Unit</strong>s: Sealed pipingH 50mL 150m40mh 15m➲ Total pipe length = A+a+b+c+d+e+f ≤ 300mBranch pipe can not be used after headerLlHhLongest pipe length* Equivalent pipe lengthA+f ≤ 150mA+f ≤ 175mLongest pipe length after 1st branchf ≤ 40mDifference in height(<strong>Outdoor</strong> <strong>Unit</strong> ↔ Indoor <strong>Unit</strong>)H ≤ 50m(40m:<strong>Outdoor</strong> unit is lower than Indoor <strong>Unit</strong>s)**Difference in height (Indoor <strong>Unit</strong> ↔ Indoor <strong>Unit</strong>)h ≤ 15mWARNINGPipe length after header branching (a~f)It is recommended that difference in length of the pipes connected to the Indoor <strong>Unit</strong>s is minimized.Performance difference between Indoor <strong>Unit</strong>s may occur.• * : Assume equivalent pipe length of Y branch to be 0.5m, that of header to be 1m, calculation purpose• ** : Indoor <strong>Unit</strong> should be installed at lower position than the headerInstallation 10
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