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Conventional Heat/Cool wiring and HVAC setup codeUpdated 10 months ago

The thermostat will support up to 2-stages of cooling (Y1, Y2), 2-stages of heating (W1, W2) and fan control (G).

 


The thermostat is powered on terminals RH and C. W1-O/B and W2-AUX are multi-purpose terminals and requires an HVAC setup code before it can be used to control the HVAC equipment. 

Basic Conventional Setup Codes:

Conventional systemsCode
1heat/1cool with fan control (gas/oil)11B
2heat/1cool with fan control (gas/oil)61B
1heat/2cool with fan control (gas/oil)16B
2heat/2cool with fan control (gas/oil)66B
1heat/1cool with fan control (electric)21B
2heat/1cool with fan control (electric)71B
1heat/2cool with fan control (electric)26B
2heat/2cool with fan control (electric)76B


See Setting the Primary/Advanced HVAC Control Configuration section for more details.

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