When troubleshooting a residential hydronic heating system, the technician notices that the burner keeps going out on high limit. What is the most likely cause?

A. defective high limit control
B. defective circulator motor
C. defective room thermostat
D. defective zone valve


Answer: B

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The two types of reactions of photosynthesis are ____________________ and _________________________ reactions

Fill in the blank(s) with correct word

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What are location dimensions made from and why?

What will be an ideal response?

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When a vapor condenses:

A) The potential energy inside the molecules decreases. B) The amount of energy inside the molecules increases. C) The molecular motion of its atoms increases. D) The molecular motion of the atoms ceases.

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The ____ of a home to the site may be based on heating or cooling requirements.

A. view orientation B. variance C. solar orientation D. terrain orientation

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