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C. An RP[3A installed more than five (5) fcct above (loor level must have a platfomi <br /> undcr it for thc tester or maintenancc persan to stand on. The pla�forn must meet all <br /> applicablc safcry standards and cedes. <br /> D. An RPI3A shall not be installed in a pil below ground Icvel. Flooding of the pit could <br /> causc a direct cross connection through thc relief vah�e. Semi-burieJ pits may be <br /> ����n�:,ni�����,Sut�your local authority) if the RPBA is installed abovc the ground or <br /> maximum Ilood Icvcl with an approvcd air gap betwccn thc rclicf vah�c port and a <br /> daylight drain. Thc daylight drain linm abovc ground or scmi-buricd vaults must: <br /> 1. [3c able to be bore sighted. <br /> 2. I3c installcd abovc thc ground or maximwn flood Ic��cl, whichcvcr is highcr. <br /> 3. Bc ablc to rcasonably handlc thc volume of watcr tha� potcnlially could bc <br /> discharged from the relicf valvc port (sec City of G��crctt standard 518 at the <br /> cnd afthis documcnt). <br /> G Tlic RI'DA must bc protectcd from fi�cczing. Various hcating clements arc etl'ective <br /> if po�vcr is available. If the water syslcm can be drained and shut olTduring Geczing <br /> periods, additional "frcczc-proofing" can bc accomplishcd by consulting thc <br /> manufacturcr of lhc spcciflc assembly for rccommcndations on how to drain cach <br /> watcr cnlrapping caviry of thc asscmbly. <br /> P. Horizontal installation is requircd. <br /> G. Carc must bc uscd to insurc Uiat Ihc asscmbly is nol installcd whcrc the p;cssurc will <br /> bc maintaincd abo��c thc asscmbly's ratcd and labcicd capacity. <br /> 11. If Itot watcr conditions arc anticipatcd, consult thc manufacturcr for specific <br /> recommendations. High temperature usc may reyuire difTerent scat matcrial and <br /> composition for proper operation of thc asscmbly. <br /> I. Thcrnial watcr cxpansion and/or watcr hammcr downstrcam of thc asscmbly can <br /> causc cxccssivc pressurc. This typc of situation can bc climinatcd through thc use of <br /> u�ater hanuncr an�cstors or surgc protectors to avoid possible damage to the system <br /> and asscmbly. <br /> J. Whcn the RPBA is locatcd insidc a building it shall bc installed in a location where <br /> both Ihe occasional spitting Gom Ihc rclicf valve port and the possible constant <br /> dischargc during a foulcd chcck ��ah�e situation will not be objectionable. As such, a <br /> drainagc systcm which will rcasonably handle thc ��olumc of watcr that could <br /> potcntially bc dischargcd from thc rclicf valve port must bc considcred in installation. <br /> Sec figurc I for estimatcd dischargc rates. In addilion, an approved air gap funnel <br /> asscmbly, ci�hcr pro��idcd by thc manufacturer or fabricated (with an approved air <br /> gap) for the spcci6c installation, may bc installed to handle the occasional spitting of <br /> thc rclicf��alve due to pressure Iluctuations. A line from this funncl assembly may <br /> then bc �vn to an adcquately sizcd iloor drain of equal or grcater size. It must be <br /> 5:\BBruce\��k0ow Installa6on Requirements 021709 jm.da �� <br />