Daikin REYQ72, Serveice Manual

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Example of Connection (R-410A Type) SiUS39-602
236 Appendix
5. Example of Connection (R-410A Type)
5.1 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.
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 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 choice of components, types of components, etc.
Type of
fitting
Sample systems
Di
st
ri
but
ion by
R
E
FNE
T
j
o
in
ts
Di
st
ri
but
ion by RE
FNE
T
header
Com
b
inat
ion of
R
E
FNE
T
j
o
in
ts
and headers