REFRIGERANT PIPING
ENGLISH
27
Refrigerant Piping Work for Series Installation
Master
IDU
First Branch
Slave
h
Selecting the Diameters of A and E
A: Piping from the indoor unit to the first branch. The diameter that can handle the capacity of
the master and slave combined.
E: The diameter that can handle the capacity of the slave
h
For the piping length and diameter standards other than those in the above table, refer to the
standards in pp. 22-26.
Permissible difference of elevation for outdoor units (H1)
Less than or equal to 0.5 m
Permissible length of piping for outdoor units (L1 + L2)
Less than or equal to 7 m
CAUTION
• An additional Y branch joint is required to connect outdoor units in a series.
• When connecting piping in outdoor units, piping must level off or be on a gradient towards
a slave outdoor unit in order to prevent oil from accumulating in the slave outdoor unit.
Otherwise, the product may not work properly.
• When connecting piping among outdoor units, the main piping must be positioned lower
than the connecting ports on the outdoor units in order to prevent oil from accumulating in
the outdoor unit. Otherwise, the product may not work properly.
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Содержание GP-W500B6C
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