ProSelect Force Steam Gas Boiler Installation Manual

10
106324-04 - 4/18
FIGURE 6: GAS CONNECTION TO BOILER
VII. Gas Piping
*
*StateofMassachusettsRequiresManual
Shut-offValvetobe“T”HandleType
Gaspipingtotheboilermustbesizedtodeliveradequategasfortheboilertoreatthenameplateinputatalinepressure
betweentheminimumandmaximumvaluesshownontheratingplate.Formoreinformationongaslinesizing,consultthe
utilityorChapter2oftheNational Fuel Gas Code.
 Figure6showstypicalgaspipingconnectiontotheFORCESTMboiler.Asedimenttrapmustbeinstalledupstreamof
allgascontrols.Installamanualshut-offvalveoutsidethejacketandgroundjointunionasshown.
 Theboileranditsgasconnectionmustbeleaktestedbeforeplacingtheboilerinoperation.Whendoingthis,theboiler
anditsindividualshut-offmustbedisconnectedfromtherestofthesystemduringanypressuretestingofthatsystemat
pressuresinexcessof1/2psi.Whenpressuretestingthegassystematpressuresof1/2psiorless,isolatetheboilerfromthe
gassupplysystembyclosingitsindividualmanualshut-offvalve.