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RM7890A,B,C/EC7890A,B 7800 SERIES Relay Modules
SERIES burner control. ControlBus Communications The S7830 provides interfaces with the 7800 SERIES Relay module through a three-wire RS-485 interface. Using this communications bus, the S7830 provides additional first-out a
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69-2487ES-01 - RTH7400/RTH7500 Quick Installation Guide
If your old thermostat had both R and RH wires, remove metal jumper. Connect the R wire to the Rc terminal, and the RH wire to the R terminal. If your old thermostat had only 1 C or C1 wire, connect it to the C terminal. If
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