Gree CE52-24/F(C) Owner's Manual page 10

Wiring Instructions:
(1) The centralized controller is applicable to multi VRF units, connectable with
network of indoor units or the network of outdoor units. One centralized
controller can control up to 16 sets of outdoor system and up to 255 sets of
indoor unit.
(2) If the centralized controller is to be connected with the network of indoor units,
connect according to fig.3.4. The centralized controller can only be connected
with the terminal unit of indoor network. A matching resistance needs to be
added with the communication cords at the G1 and G2 ports.
(3) If the centralized controller is to be connected with the network of outdoor units,
connect according to fig.3.5. The centralized controller can only be connected
with the terminal system of the outdoor network. A matching resistance needs
to be added with the communication cords at the G1 and G2 ports.
(4) The centralized control address DIP switch (SA2_Addr-CC) indicates the
centralized control address required when different refrigerating systems are
controlled in a centralized manner. The default factory setting is "00000".
(5) If the centralized controller is to be connected with the network of heat
recollection, connect according to Fig.3.6. The method 2 is also applicable to
centralized controller switching in heat recollection network.
If the centralized controller is to be connected with the network of outdoor units,
set the DIP switch according to the following methods:
1) The DIP switch must be set on the master unit and set the Master Unit
Setting DIP Switch(SA8) to "00". Otherwise, the setting is invalid.
2) On the same refrigerating system, the centralized control address DIP switch
(SA2_Addr-CC) on a non-master unit is invalid, and it is unnecessary to change
the settings.
3) The centralized control address DIP switch (SA2_Addr- CC) on the master
unit of a refrigerating system must be set to "0000/", and this system is the
master system.
4) The centralized control address DIP switch (SA2_Addr- CC) on the master
unit of other refrigerating systems must be set as follows:
7
Centralized Controller