E-Smart Zone Controller
6
Method 3: Connect with heat recovery mode converter network
Fig. 1.6 Centralized Controller Connected with Heat Recovery Mode Converter
Network
Wiring Instructions:
（
1
）
The smart centralized controller is applicable to multi VRF units, connectable
with IDU network, ODU network or mode converter network. One centralized
controller can control up to 16 sets of outdoor unit system and up to 32 sets of
indoor unit.
（
2
）
If the centralized controller is to be connected with the IDU network, connect
according to Fig.1.4. The controller can connect with any one indoor unit in
series, that is, connect the controller’s G1 and G2 ports with the D1 and D2
ports correspondingly with communication wires. When the controller is
connected with the terminal unit of IDU network, a matching resistance needs
to be added with the communication wires at the G1 and G2 ports.
（
3
）
If the centralized controller is to be connected with the ODU network,
connect according to Fig.1.5. The centralized controller can only be
connected with the terminal system of the ODU network. A matching
resistance needs to be added with the communication cords at the G1 and G2
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