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4 Wiring Requirements
Figure 4-4_Control Location
CONTROLLER 1
CONTROLLER 2
MODBUS
COMMUNICATION
BOARD (MTR01)
HEAT EXCHANGER 1
HEAT EXCHANGER 2
Modbus Instructions
Typical Boiler System Wiring
Cascade Daisy Chain Connection
Modbus RS485 Communication Bus
Modbus RS485 Port on Gateway or Building System
Physical Configuration: Cascade without Individual Monitoring