Honeywell pro series thermostat wiring

Known as the common wire, C-Wire provides WiFi thermostats continuous power from heating e. Air Conditioning systems. C-Wires are required on all Resideo WiFi thermostats. For full thermostat wiring assistance: Click here.

Check your thermostat wiring compatibility. Skip to main content. Our Accessibility Statement. How do I wire my thermostat? Last updated. When wiring, each wire should be identified by what terminal s it connects to — never by color. The thermostat uses one wire to control the primary functions of your HVAC system, such as heating, cooling, and fan.

Honeywell pro series thermostat wiring

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Our Accessibility Statement. Skip to main content. If your O or B terminal shares a label with another wire — typically W —identify whether you have a heat pump system or not.

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Hide thumbs. Table of Contents. Quick Links. Previous Page. Next Page. Thermostat Honeywell hr90 Quick Start Manual 12 pages. See Figure 1. Page 7: Power Options Before starting, turn the power off at the breaker box or switch. Open package to find the UWP.

Honeywell pro series thermostat wiring

Check your thermostat wiring compatibility. Skip to main content. Our Accessibility Statement. How do I wire my thermostat? Last updated.

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Check your thermostat wiring compatibility. Note: Make sure your wires aren't over-extended or strained. Last updated. F Make sure the wires are connected Gently tug on the wires to make sure they are connected to the C-Wire Adapter. You should see the same terminal labels that are on your thermostat. Our Accessibility Statement. Your new thermostat may not be directly compatible if you see terminals labeled A B C, or 1 2 3, as your system requires a communicating thermostat. Relabel your Y-Wire with the "K" sticker provided with your new thermostat. The thermostat uses one wire to control the primary functions of your HVAC system, such as heating, cooling, and fan. Note: If you are uncomfortable performing these steps, we recommend contacting a local HVAC contractor. If we recommend placing a wire in a terminal, do not move it to another terminal if we address it later in the guide. If you're installing a new thermostat, but your existing one is missing a C-Wire, you have the following options:.

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However, some lift from the bottom and lever off, and others have a locking tab. Do not label these wires. Last updated. Speak directly with an agent for help with our products. The jumper may also be a wire connecting the two terminals. Open the heating and cooling system's cover to find the control board. Known as the common wire, C-Wire provides WiFi thermostats continuous power from heating e. Note : If you have wires connected to two R-Terminals, then you have a two-transformer system and need additional assistance. If you're installing a new thermostat, but your existing one is missing a C-Wire, you have the following options:. You won't need to use a C-Wire Adapter.