A boiler with a volume exceeding 120 gallons or a heat input exceeding 200,000 Btu/hr. is classified as what?

When referring to a boiler with a volume exceeding 120 gallons or a heat input exceeding 200,000 Btu/hr., it is classified as a hot water supply boiler. This classification aligns with industry standards that specify the capacity and output of boilers. Hot water supply boilers are specifically designed to deliver water at a temperature that can exceed 140°F for heating purposes and can also be utilized for hot water production in various applications.

This classification is important for regulatory and safety compliance, as it influences the design and operational criteria that must be adhered to in order to ensure safe and efficient performance. The definition of hot water supply boilers is codified within various plumbing and mechanical codes, establishing clear parameters for installation, maintenance, and operation.

Understanding the characteristics of hot water supply boilers is essential for anyone working in plumbing, as it has implications for system design, sizing, and safety regulations.