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MULTI V Water IV
8. Refrigerant Piping System
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Outside unit main pipe diameter(A): (Gas pipe) (Fluid pipe)
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Pipe diameter(B, C) after the 1st branch according to 120% indoor unit combination(34.8kW):
(Gas pipe) (Fluid pipe)
Therefore, select the pipe diameter(B, C) after the 1st branch to be main pipe diameter(A) (Gas pipe) (Fluid pipe)
Cautions for header branch pipe
WARNING
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It is recommended to install the difference between the length of the pipe after header branch(a~f) and the length
of the pipe connected to indoor unit to be the minimum.
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As the pipe length difference increases, there may be performance differences between indoor units.
•
Y branch and header branch cannot be used after header branch.
24
Heat Pump
Installation of Outside Units
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