Daikin R-410A Installation Manual page 6

EDUS39-605
3.1.2 Heat Recovery System
Use of the particular branch fitting appropriate to each individual unit type not only permits the pipes to be laid
with ease but also increases the reliability of the system as a whole.
Type of
fitting
Units can be added by connecting them directly to the REFNET header or REFNET joint. Further branches cannot be
included in the system below the REFNET header branch.
Notes
1. When the capacity ratio of the indoor system to the outdoor unit is more than 100% and when all the indoor units are
in operation at the same time, the rated capacity of each unit is somewhat reduced.
2. Special purpose REFNET pipe components must be used for all the pipe work. For further details concerning choice
and type of components refer to Section 6.3 Example of Connection.
Installation of Outdoor Units
Sample systems
REFNET Pipe System
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