•Do not use wire colors to chose labels. The terminal name is what is important.
a.Locate the wiring labels located in the box with the new thermostat.
b.Look at where each wire is connected to the existing thermostat and find the letter shown next to that wire terminal.
c.Peel off the matching label and wrap it around each corresponding wire.
Important Notes:
•If you have a short jumper wire between two terminals, remove the jumper and do not label it. This jumper wire is not required on the new thermostat.
•If you had to connect a new 24 VAC common wire in step 3a, you will use the “C” label on that wire.
•If you have a W terminal, use the W1/W label on that wire.
•If your thermostat has any terminals with names that do not match any on the label, write down the terminal names and wire colors for later reference.
Y | G | R |
Y | G | RcR |
| ||
|
| |
W1 | C | ! |
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| Wire colors and |
W1 | C | letters may vary |
B C E F G O L Y1 Y2
B | C | E | F | G | O | L | Y1 | Y2 |
Rc | Rh | X2 | T | W1 | W2 | W3 | X | Y |
R | R |
|
| W |
|
|
|
|
R |
| R |
|
|
| W |
|
|
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Rc | Rh | X2 | T | W3W2W1 | X | Y | |||
•Note: During this process, make sure that the wires do not pull back into wall opening.
a. Detach all wires from wall plate.
b. Remove all screws attaching the wall plate to the wall and remove wall plate. c. See “MERCURY NOTICE” below.
MERCURY NOTICE |
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When this control is replacing an old control that contains mercury |
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in a sealed tube, do not dispose of your old control in the trash. |
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Dispose of properly. Contact your local waste management authority |
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for instructions regarding recycling and proper disposal of the old | Wall plate |
control. |
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A listing of heating, ventilating and air conditioning wholesalers that participate in the Thermostat Recycling Corporation’s recycling program are available at
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