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Installation and Wiring

For help, contact:

WEB: honeywellhome.com

PHONE: 1-800-633-3991

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Removing the old thermostat

  1. Turn power OFF.

    To protect yourself and your equipment, turn off the power at the breaker box or switch that controls your heating/cooling system. Some systems may have separate heating and cooling breakers.

  2. Check that your system is off.

    Change the temperature on your old thermostat to be above room temperature in heat mode or below it in cool mode. If you don’t hear the system turn on within 5 minutes, the power is off. Note: If you have a digital thermostat that has a blank display, skip this step.

     

  3. Remove the old thermostat’s faceplate.

    On most thermostats, you can take off the faceplate by grasping and gently pulling. Some thermostats may have screws, buttons, or clasps.

    Do not remove any wires from your thermostat at this time!

  4. Make sure there are no 120/240V wires.

    Do you have thick black wires with wire nuts?

    Is your thermostat 120V or higher? If you answered Yes to either of these questions, you have a line voltage system and the thermostat will not work.

     

  5. Take a picture of how your wiring looks like right now.

    Be sure to include the letters next to the terminals where the wires are inserted. This will be a helpful reference when wiring your thermostat.

    Tip: If the color of your wires has faded or if 2 terminals have the same wire color, use the wire labels provided in the package to label each wire.

  6. Make note of any jumpers

    A jumper connects one terminal to another terminal. It may look like a small staple or even a colored wire.

  7. Record whether you have wires in the following terminals.

    Do not include jumpers as a part of your count. This thermostat does not need jumpers.

  8. Write down the color of the wires.

    Check mark the wires that are connected to terminals. Next to the check mark, write down the color of the wire. Do not include jumpers as a part of your count.

    Check all that apply (Not all will apply):

    S and U terminals are not supported with this thermostat.

    If there are wires in terminals that are not listed, you will need additional wiring support. Visit honeywellhome.com to find out if the thermostat will work for you.

     

  9. Disconnect the wires and remove the old wall plate.

    Use a screwdriver to release wires from terminals. Then, use a wire label to identify each wire as it's disconnected. The letter on the wire label should match the letter on the terminal.

    Tip: To prevent wires from falling back into the wall, wrap the wires around a pencil.

Installing Your X2S Thermostat

  1. Bundle and insert wires through the UWP.

    Pull open the UWP and insert the bundle of wires through the back of the UWP. Make sure at least 1/4-inch of each wire is exposed for easy insertion into the wire terminals.

  2. Insert the wall anchors.

    It is recommended that you use the wall anchors included in the box to mount your thermostat.

    You can use the UWP to mark where you want to place the wall anchors.

    1. Level the wall plate.

    2. Mark the location of the wall anchors using a pencil.

    3. Using a 3/16” bit, drill the holes.

    4. Insert wall anchors.

    5. Make sure anchors are flush with wall.

  3. Set R-switch position and insert R-wire or wires.

    Set the R-switch up or down based on your wiring notes in Step 7 of Removing the Old Thermostat (Record whether you have wires in the following terminals.)

Insert wires into the inner holes of the terminals on the UWP. The tabs will stay down once the wire is inserted.

Various wiring options are shown in Wiring Diagrams.

If you have 1 R-wire (R, Rh or Rc):

or

If you have 2 R-wires (R or Rh, and Rc):

  1. Connect wires to the UWP.

    Refer to the notes you recorded on the chart during removal. Depress the tabs to put the wires into the inner holes of their corresponding terminals on the UWP (one wire per terminal) until it is firmly in place.

  2. Confirm wiring matches snapshot.

    Confirm that the wiring matches the terminals in the photo you took during removal.

  3. Mount the UWP and close the door.

    Mount the UWP using the provided screws. Install all three screws for a secure fit on your wall. Close the door after you’re finished.

  4. Attach your thermostat.

    Align the thermostat onto the UWP and firmly snap it into place.

  5. Turn your power ON.

    Turn on the power at the breaker box or switch that controls the heating/cooling system.

  6. Return to the thermostat. Confirm the screen shows SETUP. If it does, either select USING APP and continue to  Setup with First Alert by Resideo AppOR select ON DEVICE and continue to Configuration.