User Guide

17
SEDIMENT TRAPS
Asedimenttrapshallbeinstalledasclosetotheinletofthewater
heateraspracticalatthetimeofwaterheaterinstallation.The
sedimenttrapshallbeeitherateefittingwithacappednipple
inthebottomoutletorotherdevicerecognizedasaneffective
sediment trap. If a tee fitting  is used, it shall be installed in
conformance with one of the methods of installation shown in
theFigures15and16.
Contaminantsinthegaslinesmaycauseimproperoperationof
thegascontrolvalvethatmayresultinfireorexplosion.Before
attachingthegaslinebesurethatallgaspipeiscleanonthe
inside.Totrapanydirtorforeignmaterialinthegassupplyline,
asedimenttrapmustbeincorporatedinthepiping.Thesediment
trapmustbereadilyaccessible.Installinaccordancewiththe
“GasPiping”section.RefertothecurrenteditionoftheNational
FuelGasCode,ANSIZ223.1/NFPA54ortheNaturalGasand
PropaneInstallationCodeCAN/CSAB149.1.