NV C-1A Boilers Practice Questions - Nevada C-1A Boilers Contractor Examination Exam

Why is a mixing or injection valve used between a hot boiler and a radiant-floor loop?

To raise floor-water temperature above 200°F for faster warmup. To convert the radiant tubing into a gas vent. To pressurize the oil tank to 3 psig. To blend supply and return so the floor sees a lower, controlled water temperature.

Correct Answer:

To blend supply and return so the floor sees a lower, controlled water temperature.

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