Understanding 24V Thermostats, Terminals, Functions and Wiring 

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  • Author: Craig Migliaccio
  • Level: Beginner
  • Study time: 1.5 hours
  • Video time: <1 hour
  • Knowledge Checks: 25
Course overview

Learn how 24V thermostats operate with simple to understand examples. We discuss terminal functions and how thermostats are set up differently based on the equipment types. Thermostat wire count and gauge sizes are discussed. Learn how to fish thermostat wiring through walls and wire a thermostat. Thermostat replacement problems are covered. The top thermostat related problems, associated troubleshooting, and examples are shown.

"Understanding thermostat wire functions is the key to diagnosing any system that is intermittently working or non-functioning."

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