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How can I tell how many heating stages I have when configuring my Lyric?

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The Lyric thermostat is compatible with both single stage and two stage heating systems. When configuring your Lyric, you will need to check the wiring to your thermostat to tell how many heat stages you have.
If you have a conventional forced air heating system:

  • If you only connected a wire to the W terminal on your Lyric thermostat, you have a single stage heating system and should select 1.
  • If you connected a wire to both W and W2, you have a two stage heating system and should select 2.

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