Which standard applies to oil-fired pool and spa heaters?

The standard that applies to oil-fired pool and spa heaters is UL 726. This standard specifically addresses the safety and performance requirements for oil-fired appliances, including pool and spa heaters, ensuring they operate safely and effectively. It covers various aspects such as construction, performance, and safety during operation, which are critical for appliances that utilize oil as a fuel source.

Using UL 726 ensures that these heaters meet specific safety standards that protect users from hazards associated with oil combustion and provide guidelines for manufacturers to design reliable and efficient heaters. This standard is key for compliance with the North Carolina Mechanical Code, emphasizing the importance of using approved and recognized standards in the installation and maintenance of mechanical systems.