In addition to being listed for installation, what is another requirement for some gas appliances?

The requirement for gas appliances to be accessible for maintenance is crucial for ensuring safety and proper functionality. Accessibility allows for regular inspections, repairs, and service work to be performed easily, which is vital in identifying potential issues before they become serious hazards. Gas appliances, if not maintained properly, can lead to unsafe conditions such as gas leaks or inefficient operation. Therefore, ensuring that appliances are installed in a manner that allows maintenance personnel to reach all necessary components is a fundamental requirement in gas appliance installation to uphold safety standards and prolong the life of the equipment.

While energy standards and efficiency are important factors, they do not directly relate to the maintenance aspect of gas appliances. Likewise, while adjustability for different pressures is also relevant, it is more about the operational parameters rather than ongoing maintenance access. The focus on accessibility emphasizes the importance of safety and ongoing service needs.