Red Seal Plumbing Practice Exam

Which boiler can be classified as a high mass boiler?

1. Copper water tube boiler

2. Cast iron sectional boiler

3. Coil type boiler

4. Fire tube boiler

The correct answer is: Cast iron sectional boiler

A high mass boiler refers to a boiler that has a large amount of mass, which takes longer to heat up and cool down. In this case, a cast iron sectional boiler is the correct answer because it has a large amount of iron, which gives it a high mass. The other options, such as a copper water tube boiler, a coil type boiler, and a fire tube boiler, do not have a significant amount of mass and are therefore not classified as high mass boilers. It is important to note that although the copper water tube boiler uses copper, it does not have enough mass of copper to result in a high mass boiler classification.