Daikin R-410A User manual

EDUS39-605
Installation of Outdoor Units 1
VRV Installation
1. Center of Gravity ............................................................... 1
2. Foundation Drawing........................................................... 2
3. REFNET Pipe System ...................................................... 3
3.1. Layout Example .......................................................... 3
3.2. Field Refrigerant Piping .............................................. 5
3.3. REFNET Joints and Headers ..................................... 6
4. REFNET Pipe System ....................................................... 8
4.1. REFNET Joint (Branch Kit)........................................ 8
4.2. REFNET Header(Branch Kit)...................................... 10
4.3. Outdoor Unit Multi-Connection Piping Kit .................. 12
5. Installation ......................................................................... 15
5.1. RXYQ-M .................................................................... 15
5.2. Safety Considerations................................................. 18
5.3. REYQ-M .................................................................... 37

Center of Gravity EDUS39-605
2 Installation of Outdoor Units
1. Center of Gravity
RXYQ72/96MTJU
REYQ72/96MTJU
4D045330

EDUS39-605 Foundation Drawing
Installation of Outdoor Units 3
2. Foundation Drawing
RXYQ72/96MTJU
REYQ72/96MTJU
3D042653A

REFNET Pipe System EDUS39-605
4 Installation of Outdoor Units
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.
Units can be added by connecting them directly to the REFNET header or REFNET joint. Further REFNET joints
cannot be included in the system downsteam of a REFNET header.
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. For further details concerning types
of components see Section 6.3 Example of Connection.
Typeof
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)