A water heater pan shall be drained by which type of pipe?

A water heater pan is designed to collect any potential overflow or leaks from the water heater, preventing water damage to the surrounding area. To ensure that any water collected in the pan is safely directed away, it must be drained through an indirect waste pipe.

An indirect waste pipe is specifically designed for discharging waste that is not directly connected to a sanitary drainage system. This type of drainage system prevents backflow and allows for proper air circulation, minimizing the risk of any contaminants entering the potable water supply. Moreover, using this method complies with plumbing codes that are in place to protect health and safety.

Direct waste pipes, on the other hand, are typically used for systems that have a direct connection to the sanitary sewer system and do not allow for the necessary air gap. PVC and copper pipes are materials that can be used for a variety of plumbing applications, but they do not inherently define the type of drainage method needed for a water heater pan. The key factor here is the designation of indirect waste, which emphasizes safe disposal without risk of contamination.