Refnet Pipe System; Layout Example - Daikin RWEYQ72 Engineeiring Data

REFNET Pipe System

3. REFNET Pipe System
3.1

Layout Example

3.1.1 Heat Pump 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 outside unit is more than 100% and when all the indoor units are in operation at the same
time then the rated capacity of each unit will be somewhat reduced.
2.Special purpose REFNET pipe components must be used for all the pipe work. For further details concerning choosing components, see
REFNET and Piping Selection Rules.
3.The Daikin REFNET kits are supplied with insulation intended to fit over the main body of the REFNET joint after installation of the REFNET kit is
complete.
4.IMPORTANT:In applications where the REFNET kits are installed in an environment requiring fire-rated materials to be used, it is necessary for
the installer to obtain from a thired party supplier and to utilize, for insulation, fire-rated materials that meet all applicable building codes and
other requirements.The factory-provided insulation that is supplied with the REFNET kit should be discarded in a manner meeting all applicable laws.
4
Sample systems
EDUS30-900-N
Installation of Outdoor Units