Daikin VRV IV RXYQ TTJU Series, Engineering Data

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REFNET Pipe System EDUS341411-N
56 Installation of Outdoor Units
4.2 REFNET Joints and Headers
4.2.1 REFNET Joints
For gas and liquid branch pipes

Make sure that all branch pipes are fitted such that they branch either horizontally or vertically.

When the size of the selected field piping is different from that of branch pipe then the connecting section should be
cut with a pipe cutter as shown in the figure below.

When you are cutting an inlet or outlet pipe with a pipe cutter make sure that you make the cut in the center of the
connection area.

Branch pipes must be insulated in accordance with the handbook which comes with each kit.
4.2.2 REFNET Header