Which thermostat terminal is commonly used for cooling control?

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Prepare for the HVAC Controls 26408-23 Test with flashcards and multiple-choice questions. Each question offers hints and explanations to strengthen your knowledge. Excel in your exam with our engaging quiz format!

Multiple Choice

Which thermostat terminal is commonly used for cooling control?

Explanation:
Cooling is controlled by the terminal that delivers 24V to the outdoor compressor/contactor when the thermostat calls for cooling. In a standard 24-volt setup, R provides the power, and when the cooling demand is set, the thermostat closes the circuit to the cooling terminal, energizing the compressor relay. The other terminals have different roles: W for heat, G for the indoor fan, and R is the power source. So the terminal used for cooling control is the one that completes the circuit to energize the compressor.

Cooling is controlled by the terminal that delivers 24V to the outdoor compressor/contactor when the thermostat calls for cooling. In a standard 24-volt setup, R provides the power, and when the cooling demand is set, the thermostat closes the circuit to the cooling terminal, energizing the compressor relay. The other terminals have different roles: W for heat, G for the indoor fan, and R is the power source. So the terminal used for cooling control is the one that completes the circuit to energize the compressor.

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