32
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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.
2) Thettinginwhichthegauge,reliefvalveandLWCOaretobemountedmustnotbemovedfromthefactory
speciedlocation(Figure2.1).
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 8.12: Boiler Head Loss
0.00
1.00
2.00
3.00
4.00
5.00
6.00
0 5 10 15 20 25
Flow (GPM)
Head Loss (Feet w.c.)
CHG150
CHG225