Figure 3-6: Multiple TSBC/SBC Modbus RS485 Wiring
IMPORTANT NOTES for TSBC Connections:
1. When controlling Setpoint with the EMS, the user does not have access to Enable/Disable, and Lead Lag.
User must do a contact closer to RO & C on each boiler. When controlling Modulation, user does have access
to Enable/Disable, and Lead Lag.
2. When the EMS is connected, boiler sequencing (Multiple Boiler Lead/Lag) must be done external to the Boiler
Control by other means.
3. Boiler Enable/Disable and Firing Rate are sent over the ProtoNode or may be directly wired.
1. When the Energy Management system is connected, boiler sequencing (multiple boiler lead/lag) must be done external to the boiler controls, by other means.oiler enable/disable and firing rate are sent over the Universal Gateway or may be direct wiring.
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