Oil fired water heaters are tested under which standard?

Oil fired water heaters are specifically tested under the UL 858 standard. This standard pertains to the safety and performance requirements for oil-fired water heaters, ensuring that these appliances operate safely and efficiently under normal and abnormal conditions. Compliance with UL 858 guarantees that the water heaters have been rigorously tested for various potential hazards, including fire and electrical safety, which are critical considerations in environments where oil is used as a fuel source.

The other standards listed, while relevant to different types of heating appliances or equipment, do not specifically address oil fired water heaters. For future studies and exam preparations, it is helpful to know that UL 2158 pertains to vented gas room heaters, UL 732 covers particleboard used in cooking appliances, and UL 896 applies to gas water heaters. Understanding these distinctions will help reinforce your knowledge of appliance standards in the HVAC industry.