What is the Carrier Connect™ 33CONNECTSTAT43FX Thermostat?
Carrier Connect™ Wi-Fi Thermostat 33CONNECTSTAT43FX CARRIER CORPORATION ©2021
Installation Guide All rights reserved
3
Programmable and non-programmable installations
The thermostat combines all 24 Vac output demand control functions needed for the following types of thermostat
programmable and non-programmable installations:
Cool only (up to 3 stages of cooling)
• Cooling
○ Y1 - first stage cooling
○ Y2 - second stage cooling
○ Y3 - third stage cooling
Heat only with gas heat (up to 2 stages of heating)
• Heating
○ W1 - first stage heat
○ W1 + W2 - second stage heat
Heat only with electric heat (up to 3 stages of heating)
• Heating
○ W1 - first stage heat
○ W2 - second stage heat
○ W1 + W2 - third stage heat
AC with gas heat (up to 3 stages of cooling and 2 stages heating)
• Cooling
○ Y1 - first stage cooling
○ Y2 - second stage cooling
○ Y3 - third stage cooling
• Heating
○ W1 - first stage heat
○ W1 + W2 - second stage heat
AC with electric heat (up to 3 stages of cooling and 3 stages heating)
• Cooling
○ Y1 - first stage cooling
○ Y2 - second stage cooling
○ Y3 - third stage cooling
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