Daikin VRV Service Manual page 226

Adaptors for Connection of Air Conditioners
2. The limits for wiring (i.e., Maximum distance: 1000 m, Total wiring length: 2000 m, and
3. System design to diversify the risk of centralized control is enabled.
222
Maximum number of branches: 16) should be applied to each adapter unit.
In the ranges of A, B, and C, wirings of 1000-m maximum distance, 2000-m total wiring length, and 16
maximum branches are enabled, respectively.
Conventional system
Faulty wirings, such as the application of 220-240V, may cause the system down.
If the expander adapter is used
Even though only the system goes down at the adapter downward, influence on the entire
system can be avoided.
DIII-NET expansion adapter
AC220 ~ 240V
AC220 ~ 240V
Si30-408
AC220 ~ 240V
AC220 ~ 240V
Appendix