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A(n) ___ shuts the burner OFF in the event of a low water condition.

A(n) ___ shuts the burner OFF in the event of a low water condition.

Heat is generated in a boiler by the combustion of a fuel such as gas or fuel oil.

At least once a month, a low water fuel cutoff should be tested with an evaporation test.

An electrical safety policy must include the use of PPE.

Makeup water is untreated and contains some scale-forming salts that can affect boiler heating surfaces.

The primary regulatory requirements related to electrical safety come from NFPA 70E®, Standard for Electrical Safety in the Workplace.

The ___ of a modulating burner is the ratio of the maximum firing rate to the minimum firing rate.

A nonreturn valve is a type of globe valve that allows a boiler to be cut in on-line automatically when the boiler pressure is at or above the header pressure and allows the boiler to be taken off-line automatically if the pressure in the boiler drops below the header pressure.

The primary regulatory requirements related to electrical safety come from NFPA 70E®, Standard for Electrical Safety in the Workplace.