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INSTALLING THERMOSTAT WITH A C WIRE (CONT.)
4. Adjust the jumper (DIP switch)
Turn the thermostat over. Adjust the jumper switch as follows [Figure 2.4]:
• If you have connected wires to both the Rc and Rh terminals on the backplate, then adjust the jumper switch to OFF.
• If not, then adjust the jumper switch to ON.
Figure 2.4