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

What does an outdoor-reset control do on a hydronic boiler?

It raises supply-water temperature as the outdoor temperature falls, and lowers it as the weather warms. It locks the boiler at 220°F whenever the outdoor sensor is connected. It shuts off combustion air whenever the sun shines. It opens the oil-tank fill valve on a time clock.

Correct Answer:

It raises supply-water temperature as the outdoor temperature falls, and lowers it as the weather warms.

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