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Installing Thermostat with a C Wire:
1. Remove the old backplate
Unscrew the old backplate from the wall. [Figure 2.1] Hold the wires and carefully pull the backplate from the wall, making
sure the wires do not fall into the wall.
Note: If your system has a C wire, you do not need to install the power extender kit (PEK). The thermostat will use the
C wire for power.
Figure 2.1