6 7
✔ Ignore wire colors. There is no standard color code for
thermostat wires.
✔ Ignore existing wire labels, if they are present.
✔ Use the provided labels to label/re-label the thermostat wires.
✔ The new labels must remain on the wires at least until the
installation process is complete.
✔ No two wires can have the same label.
2.2.1 Note you may see two types of wiring in the old thermostat:
1. Wires leading from the wall to a
terminal on the thermostat
2. Wires connecting one terminal to
another (jumper wire).
These don’t have to be labeled.
2.2 Label and disconnect the wires
wall
C
wall
C
wall
2.1.2 Loosen all screws holding the old thermostat’s wallplate to
the wall.
Do not disconnect the wires from terminals. Allow
the wallplate to hang loosely on the wires.
Wall opening
Wallplate hanging on the wires