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from the tank or water heater. The pan shall be drained by an indirect waste pipe <br />having a diameter of not less than 314 inch 19 mm. Piping for safety pan drains shall <br />be of those materials listed in Table P2906.5. <br />Multijle an drains may terminate to a sin le dischar e M i in s stem when a roved by <br />the administrative authority and permitted by, the manufacturers installation <br />instructions and installed with those instructions,. {existing text unchanged} <br />(Remi4�1?n: Regionally accepted prm-tice) <br />Amend Section P2804.6.1; change to read as follows: <br />Section P2804.6.1 Requirements for discharge piping. The discharge piping serving a <br />pressure relief valve, temperature relief valve or combination thereof shall: <br />1. Not be directly connected to the drainage system. <br />2. Discharge through an air gap ..t.,,- OR the same F90F , as the ""+"" heat"' <br />3. Not be smaller than the diameter of the outlet of the valve served and shall discharge <br />full size to the air gap. <br />4. Serve a single relief device and shall not connect to piping serving any other relief <br />device or equipment. <br />Exception: Multiple relief devices ma be installed to a sin e T & P dischar ei in <br />sstem when a roved b ,the administrative authorit and .,permitted b the <br />manufactures installation instructions and installed with those instructions. <br />5. Discharge to the FI_ , t- the pan - - _'.,V the .,teF heateF eF steFage tank to a waste <br />FeeegteF an a roved location or to the outdoors. <br />[remainder unchanged] <br />Amend Section P2902.5.3; change to read as follows: <br />P2902.5.3 Lawn irrigation systems. The potable water supply to lawn irrigation systems <br />shall be protected against backflow by an atmospheric -type vacuum breaker, a <br />pressure-type vacuum breaker, a double-check assemble or a reduced pressure <br />principle backflow preventer. A valve shall not be installed downstream from an <br />atmospheric vacuum breaker. Where chemicals are introduced into the system, the <br />potable water supply shall be protected against backflow by a reduced pressure <br />principle backflow preventer. <br />