608.16.2 Connections to boilers.
PC § 608.16.2
The potable supply to the boiler shall be protected by an air gap or a reduced pressure principle backflow preventer, complying with ASSE 1013, CSA B64.4 or AWWA C511. Exception: An atmospheric vent complying with ASSE 1012 or CSA B64.3 may be installed in buildings classified as Occupancy Group R-3 and which do not utilize conditioning chemicals. Editor's note: For related unconsolidated provisions, see Appendix A at L.L. 2010/056.













