Each high-temperature water boiler must have a bottom drain connection of at least how many inches in diameter?

The requirement for a bottom drain connection on high-temperature water boilers is specified to ensure that the system can effectively remove sediment and contaminants that can accumulate over time. A drain connection with a diameter of at least 3/4 inch is considered appropriate for facilitating adequate drainage without restricting flow, which is crucial for maintaining the boiler's efficiency and longevity.

A drain that is too small may lead to clogs or inadequate drainage, compromising the operation of the boiler. The 3/4 inch size strikes a balance between sufficient drainage capacity while still being manageable for installation and maintenance. This standard aligns with safety and operational guidelines to promote effective water management within the heating system.