(A) All control valves on the backflow device shall be locked in the open position or be tamper-switch protected in accordance with NFPA.

(B) When a backflow prevention assembly is required for a water service connection supplying only to a fire sprinkler system, assembly shall be installed at the user connection for the fire sprinkler system in compliance with standard specifications adopted by the City.

(C) If the authority enforcing the Uniform Fire Code determines that a fire sprinkler system shall have a continuous water supply which may not be interrupted during testing of the backflow prevention assembly, the customer shall install, at his or her expense, two backflow prevention assemblies parallel to one another at the service connection. The diameter of each assembly shall be at least equal to the diameter of the service connection.

(D) When a backflow prevention assembly is required for a building which already contains a fire sprinkler system, the sprinkler system shall be tested and certified by a licensed registrant in the state that it will perform within the specification of the National Fire Protection Association and the City fire codes, after installation of the required assembly. (Ord. 125 § 8, passed 9-11-1995. Code 2012 § 53.08.)