Specifications

51
C: Standard Piping Installation Requirements
Observethefollowingguidelineswhenmakingtheactualinstallationoftheboilerpiping:
1) ThereliefvalveispackagedloosewiththeboilerandmustbeinstalledinthelocationshowninFigure2.1.Therelief
valveissettoopenat30psi.Ifthevalveisreplaced,thereplacementmusthaveareliefcapacityinexcessoftheDOE
heatingcapacityfortheboiler.Pipethedischargeofthereliefvalvetoalocationwherewaterorsteamwillnotcreatea
hazardorcausepropertydamageifthevalveopens.Theendofthedischargepipemustterminateinanunthreadedpipe.
Ifthereliefvalvedischargeisnotpipedtoadrain,itmustterminateatleast6inchesabovetheoor.Donotrunrelief
valvedischargepipingthroughanareathatispronetofreezing.Theterminationofthereliefvalvedischargepipingmust
beinanareawhereitisnotlikelytobecomepluggedbydebris.
DANGER
• PIPE RELIEF VALVE DISCHARGE TO A SAFE LOCATION.
• DO NOT INSTALL A VALVE IN THE RELIEF VALVE DISCHARGE LINE.
• DO NOT INSTALL RELIEF VALVE IN A LOCATION OTHER THAN THAT SPECIFIED BY THE
FACTORY.
• DO NOT PLUG THE RELIEF VALVE DISCHARGE.
Figure 9.9: Boiler Head Loss