What is NFPA 13 and what does it state?
• NFPA 13 is the standard for the Installation of Sprinkler Systems. It is not a testing standard as some fire inspectors may believe. • NFPA 13 (4-3.1.8.2) states that you cannot use heat tape instead of a heated valve room to freeze protect preaction valves, deluge valves, and supply pipe. • NFPA 13 (5-14.3-.1-.2) states that pipes leading up to this point can be freeze protected by a reliable means, which includes electric heat tracing. • NFPA 13 Chapters 4 and 5 state that branch lines must be preaction, dry type, or antifreeze systems. Additionally, I.E.E.E. recommends that the fire alarm panel should have an alarm input from the heat tracing control device that monitors pipe temperature, voltage, and electrical current of the heat tracing cable. Is there a UL listing for branch circuit lines? To our knowledge, there is no listing to meet. Read the fine print in the products UL listing for heat tracing of fire suppression pipes, and you’ll see it excludes branch sprinkler lines. D
