A low-pressure hot water boiler is considered to be low pressure below what pressure level?

A low-pressure hot water boiler is defined as one that operates below a certain pressure threshold. In most regulatory contexts, especially within New York, a low-pressure hot water boiler is typically classified as one that operates at pressures below 160 psig. The answer option that reflects this standard classification is the one that states 160 psig at 250°F.

This classification is important because it differentiates between low-pressure systems and those categorized as high-pressure systems, which have stricter inspection and operation protocols due to the associated risks with higher pressure. Understanding these classifications helps boiler operators ensure compliance with safety standards set forth by industry regulations and local codes.

The other options indicate pressure levels that exceed the 160 psig threshold, placing them outside the low-pressure category, which is why they do not fit the correct definition of a low-pressure hot water boiler.