Daikin RXYMQ48MVJU [4/31] Sample systems

EDUS39-606A-N REFNET Pipe System

Installation of Outdoor Units 3

2. REFNET Pipe System

2.1 Layout Example

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

Sample systems

Line branch fitting

(Pipes containing REFNET joints only)

Header branch fitting

(Piping consists of REFNET headers only)

Mixed branch fittings

(Piping including both headers

and joints)

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 is somewhat reduced.

2. Special purpose REFNET pipe components must be used for all the pipe work