High alkalinity can lead to ___.

A flame scanner is tested with a burner firing to simulate a flame failure.

U.S. Green Building Council® (USGBC) is an independent organization that tests equipment and products to verify conformance to national codes and standards.

Natural-circulation hot water heating systems are commonly used in large contemporary buildings.

The two types of electric igniters are the ___ igniter and the hot surface igniter.

The two types of electric igniters are the ___ igniter and the hot surface igniter.

In wet layup, the water side must be dry to prevent corrosion and pitting from residual moisture.

In wet layup, the water side must be dry to prevent corrosion and pitting from residual moisture.

Even in full open position, a ___ valve causes steam to change direction through the valve, resulting in a drop in steam pressure.

Corrosion is the accumulation of sludge on boiler heating surfaces.