What is the maximum length of a flex connector on a furnace?

The maximum length of a flex connector on a furnace is 12 inches. This standard is in place to ensure safety and efficiency in gas installations. Flex connectors are used to connect gas appliances to gas supply lines while allowing for some movement, which is particularly important in applications like furnaces that may experience vibration or thermal expansion.

Keeping the flex connector to a maximum length of 12 inches minimizes the risk of mechanical failure or fatigue, which can occur with longer connectors. Longer lengths can create potential leaks or malfunctions in the system. By adhering to this length requirement, gas fitters can ensure that installations meet safety codes and operate reliably.

Understanding these standards is crucial for anyone working with gas appliances, as they promote proper installation practices and prevent safety hazards.