Daikin VRV II Series Design, Installation & Testing Instructions page 122

Appendix
Between refrigerant branch kit and indoor unit
!
Piping between outdoor branch and outdoor unit (part C)
Oil-equalizing line (Only for RXYQ18 or more) (part D)
116
Pipe size for direct connection to indoor unit must be the same as the connection size of
indoor unit.
indoor capacity type
20, 25, 32, 40, 50 type
63, 80, 100, 125 type
200 type
250 type
Outdoor capacity type
RXYQ8 type
RXYQ10 type
RXYQ12, 14, 16 type
Piping size (outer diameter)
Piping size (outer diameter)
Gas pipe
ø12.7
ø15.9
ø19.1
ø22.2
Piping size (outer diameter)
Gas pipe
ø19.1
ø22.2
ø28.6
Si39-303
(Unit:mm)
Liquid pipe
ø6.4
ø9.5
(Unit:mm)
Liquid pipe
ø9.5
ø12.7
ø6.4
(Unit:mm)
General Information