What is the maximum distance allowed between a water heater and the union on the water lines?

The maximum distance allowed between a water heater and the union on the water lines is 12 inches. This requirement is established to ensure that there is easy access for maintenance and service of the water heater, as well as to prevent any strain on the connections. Proper installation and accessibility are vital to ensuring the longevity of plumbing systems and the safety of the installation. Keeping the union within this specified distance helps facilitate quicker repairs or replacements without the need to disconnect excessive piping. Additionally, it is important for adherence to plumbing codes, which specify clear guidelines to minimize potential issues.