Electric boilers must be listed and labeled according to which standard?

Electric boilers must be listed and labeled according to the UL 834 standard. This standard specifically applies to heating elements and appliances that utilize electricity to generate heat within a boiler system. UL 834 ensures that the electric boilers are safely designed, constructed, and tested to meet rigorous safety and performance criteria.

The listing and labeling process under this standard provide confidence that the equipment complies with national safety standards and is suitable for its intended use, thus protecting users from potential hazards associated with improper installation or malfunction. This standard is essential for ensuring that electric boilers operate safely and efficiently, which is crucial for maintaining compliance with building codes and regulations.

Other standards mentioned have different applications; for instance, UL 726 primarily pertains to the performance of low-temperature heating appliances, NFPA 85 addresses boiler and combustion systems hazards, and ASSE 1017 relates to temperature limiting devices, which are not specifically focused on electric boilers. Understanding these distinctions emphasizes the importance of UL 834 for electric boiler safety and compliance.