LP INSTALLERS PRACTICE EXAM QUESTIONS
WITH CORRECT ANSWERS GRADED A+ FOR
2025-2026 ASSURED EXCEL!!
WhereddodyoudfiledadpermitdfordworkdtodbeddonedindbuildingsdowneddorduseddbydthedStatedofdMassd
?d-ddCORRECTdANSWERSStatedInspector
Whendpressuredtestingdadsystemdoverd1dmilliondbtud,dwhichddoesn'tdapplyd?d-
ddCORRECTdANSWERSTestd1dhourdfordeachd200d'dofddevelopeddlength
Whendadventdondadregulatord,dwhatdisdthedhorizontalddistancedfromdtheddischargedofdthedventdtodan
dopeningdlocateddbelowd?d-ddCORRECTdANSWERS3dfeet
Howdmanydcyclesddodyoudneeddtodkeepdcontinuingdeducationdcertificatesd?d-
ddCORRECTdANSWERS3
OndandLPd-dGasdsystemd,dwhatdisdconsidereddtodbedthed"dPointdofdDeliveryd"d?d-
ddCORRECTdANSWERSOutletdofd1stdstage
Howdfastddoesdadspilldswitchdneeddtodworkd?d-ddCORRECTdANSWERS30dseconds
Ifdthedfiringdratedindadcombustiondchamberdexceedsd1,000,000dBTUd,dbutdlessdthand5,000,000d,dwha
tdisdrequiredd?d-ddCORRECTdANSWERS2dshutdoffsdindseriesd,dordonedwithdovertraveldinterlock
Whendusingdgasdpressuredboostersd,dwhichdofdthedfollowingdapplyd?d-
ddCORRECTdANSWERSAlldmustdmeetdproductd-
dacceptancedrequirementsdThedservingdgasdsupplierdhasdprovideddwrittendauthorizationdGasdpress
uredboostersdshalldbedlocateddindwelld-dventilateddspacesd,danddreadilydaccessible
, Whatdpercentagedofdventdheightdcandthedlengthdofdadsingled-dwalleddventdconnectordbed?d-
ddCORRECTdANSWERS75d%
WhatdpercentagedofdventdheightdcandthedlengthdofdTypedBd,ddoubled-dwalleddventdconnectordbed?d-
ddCORRECTdANSWERS100d%
Whatdisdthedmaxdpressuredfordnaturaldgasdindadhoused?d-ddCORRECTdANSWERS14d"dWC
Withindhowdmanydfeetdofdandapplianceddoesdthedshutdoffdneeddtodbed?d-ddCORRECTdANSWERS6'
Howdfarddoesdadroofdhatchdneeddtodbedfromdthededgedofdadroofdtodnotdneeddguardrailsd?d-
ddCORRECTdANSWERS6'
WhatdisdthedmaximumdpressuredalloweddfordCSSTd.d-ddCORRECTdANSWERS14d"dWC
Ifdthedmaximumdfiringdratedperdcombustiondchamberdisd____d,dBTUdordgreaterd,dgasdpressuredsuper
visiondprovideddbydlisteddpressuredswitchesdordcombinationdhighd/dlowdswitchd,dinterlockeddtodacc
omplishdsafetydshutdowndindeventdofdeitherdhighdordlowdpressured.d-
ddCORRECTdANSWERS1,000,000
MaxdspacingdfordsupportdfordCSSTdondadrooftopdisdeveryd.d-
ddCORRECTdANSWERSBlocksduseddfordSupportd48d"
Advacuumdisdconsidereddtodbedanydpressuredthatdisd-
ddCORRECTdANSWERSLessdthandatmosphericdpressured(14.7dpsi)
IfdandUGdgasdlinedrunsdunderdadbuildingd,dwhatdisdrequiredd?d-
ddCORRECTdANSWERSConduitdmustdterminatedoutsidedbuildingd,Sleeveddindsamedmaterialdasdpiped
Terminated4d'dabovedgrade
WITH CORRECT ANSWERS GRADED A+ FOR
2025-2026 ASSURED EXCEL!!
WhereddodyoudfiledadpermitdfordworkdtodbeddonedindbuildingsdowneddorduseddbydthedStatedofdMassd
?d-ddCORRECTdANSWERSStatedInspector
Whendpressuredtestingdadsystemdoverd1dmilliondbtud,dwhichddoesn'tdapplyd?d-
ddCORRECTdANSWERSTestd1dhourdfordeachd200d'dofddevelopeddlength
Whendadventdondadregulatord,dwhatdisdthedhorizontalddistancedfromdtheddischargedofdthedventdtodan
dopeningdlocateddbelowd?d-ddCORRECTdANSWERS3dfeet
Howdmanydcyclesddodyoudneeddtodkeepdcontinuingdeducationdcertificatesd?d-
ddCORRECTdANSWERS3
OndandLPd-dGasdsystemd,dwhatdisdconsidereddtodbedthed"dPointdofdDeliveryd"d?d-
ddCORRECTdANSWERSOutletdofd1stdstage
Howdfastddoesdadspilldswitchdneeddtodworkd?d-ddCORRECTdANSWERS30dseconds
Ifdthedfiringdratedindadcombustiondchamberdexceedsd1,000,000dBTUd,dbutdlessdthand5,000,000d,dwha
tdisdrequiredd?d-ddCORRECTdANSWERS2dshutdoffsdindseriesd,dordonedwithdovertraveldinterlock
Whendusingdgasdpressuredboostersd,dwhichdofdthedfollowingdapplyd?d-
ddCORRECTdANSWERSAlldmustdmeetdproductd-
dacceptancedrequirementsdThedservingdgasdsupplierdhasdprovideddwrittendauthorizationdGasdpress
uredboostersdshalldbedlocateddindwelld-dventilateddspacesd,danddreadilydaccessible
, Whatdpercentagedofdventdheightdcandthedlengthdofdadsingled-dwalleddventdconnectordbed?d-
ddCORRECTdANSWERS75d%
WhatdpercentagedofdventdheightdcandthedlengthdofdTypedBd,ddoubled-dwalleddventdconnectordbed?d-
ddCORRECTdANSWERS100d%
Whatdisdthedmaxdpressuredfordnaturaldgasdindadhoused?d-ddCORRECTdANSWERS14d"dWC
Withindhowdmanydfeetdofdandapplianceddoesdthedshutdoffdneeddtodbed?d-ddCORRECTdANSWERS6'
Howdfarddoesdadroofdhatchdneeddtodbedfromdthededgedofdadroofdtodnotdneeddguardrailsd?d-
ddCORRECTdANSWERS6'
WhatdisdthedmaximumdpressuredalloweddfordCSSTd.d-ddCORRECTdANSWERS14d"dWC
Ifdthedmaximumdfiringdratedperdcombustiondchamberdisd____d,dBTUdordgreaterd,dgasdpressuredsuper
visiondprovideddbydlisteddpressuredswitchesdordcombinationdhighd/dlowdswitchd,dinterlockeddtodacc
omplishdsafetydshutdowndindeventdofdeitherdhighdordlowdpressured.d-
ddCORRECTdANSWERS1,000,000
MaxdspacingdfordsupportdfordCSSTdondadrooftopdisdeveryd.d-
ddCORRECTdANSWERSBlocksduseddfordSupportd48d"
Advacuumdisdconsidereddtodbedanydpressuredthatdisd-
ddCORRECTdANSWERSLessdthandatmosphericdpressured(14.7dpsi)
IfdandUGdgasdlinedrunsdunderdadbuildingd,dwhatdisdrequiredd?d-
ddCORRECTdANSWERSConduitdmustdterminatedoutsidedbuildingd,Sleeveddindsamedmaterialdasdpiped
Terminated4d'dabovedgrade