What is UL 671 ?

UL 671 and UL 676 are both standards set by Underwriters Laboratories (UL) to regulate the safety of various products. UL 671 focuses on the fire resistance of sprinkler system equipment, while UL 676 defines the requirements for electric air heaters.

UL 671 is specifically designed to evaluate the fire resistance of automatic sprinklers, pipes, fittings, and other components used in sprinkler systems. The standard defines specific performance requirements and test methods that these products must meet to provide reliable protection in case of a fire.

Compliance with UL 671 is crucial in preventing property damage, loss of life, and business interruption. The purpose of UL 671 is to ensure that sprinkler system components can withstand the heat and pressure generated during a fire, allowing them to function properly and effectively suppress the flames.

UL 676, on the other hand, is a technical standard that defines the requirements for electric air heaters. These heaters are widely used in various industrial and commercial applications to provide controlled heating solutions. The purpose of UL 676 is to ensure the safety and performance of electric air heaters.

UL 676 sets out the guidelines and criteria that manufacturers must meet in order to achieve UL certification for their products. In order to obtain UL certification, manufacturers must demonstrate that their heaters meet the requirements outlined in the standard.

The key requirements of UL 676 include:

* The heaters must be safe to use and operate.

* The heaters must operate within their specified limits and must not pose any risk to the user or others.

* The heaters must be designed and built to withstand the environmental conditions and loads that they will be subjected to.

* The heaters must be tested to ensure that they meet the requirements of the standard.

UL 671 and UL 676 are both important standards that help ensure the safety and performance of various products. Compliance with these standards is crucial in preventing property damage, loss of life, and business interruption.