Central Controler Wiring Diagram; Communication Wiring Diagram Among Mutilple Units - A.O. Smith CAHP-MC-38 Installation, Operation And Maintenance Instructions

12.5. Central Controler Wiring Diagram

Picture 9.2 Central Controller Wiring Diagram

12.6. Communication Wiring Diagram Among Mutilple Units

Picture 9.3 Communication Cable Wiring Diagram
Note:
1. Please use shielded cable for all the communication cables among heat pump units and central
controllers and grounded the cable well. The maixmum length of the communication cable should be
shorter than 200 meters.
2. One central controller could be connected to maximum eight heat pump units.
3. Please do not connect the communication cable as following picture.