HVAC D2 LICENSE TEST QUESTIONS

HVAC D2 LICENSE TEST QUESTIONS


Regardingbnheatbnpumps,bnsuctionbnlinebnaccumulatorsbnarebnusedbnasbnwhatbnforbnexcessbnrefrigerant
bn-bnanswers--receivers




abngasbnmeterbnmustbnbebnlocatedbnhowbnmanybnfeetbnfrombnthebnsuctionbnlinebn-bnanswers--3



whatbnreducesbnthebncapacitybnofbnabnrefrigerantbncompressorbn-bnanswers--compressorbnunloader



regardingbngasbnheating,bnforbncombustionbntobntakebnplacebnwithbnnaturalbngas,bnthebnmixturebnmustb
nbebnfrombn4%bntobn14%bngasbnandbn96%bntobn86%bnair.bnAnbnamountbnofbngasbnlessbnthanbn_______b
nwouldbnbebntoobnleanbn-bnanswers--4%




whatbnshouldbnthebndraftbnreadingbnoverbnthebnfirebnbebnforbnflamebnretention,bnresidentialbnoilbnburn
erbn-bnanswers--negativebn.02



whatbnvalvebnisbnsetbnatbnthebnadjustablebnheatbnanticipatorbnonbnabngasbnthermostatbn-bnanswers--
thebnampbnflowbnreadingbnofbnthebncontrolbncircuit



whichbnisbnnotbntruebnofbnabnwaterbncooledbnchillerbnsystembn-bnanswers--
mostlybnusedbninbnresidentialbnsystems



abnpuffbnbackbnthatbnisbncausedbnbybnanbnaccumulationbnofbnair-
oilbnmixturebninbnthebncombustionbnchamberbnthatbnisbnignitedbneitherbnabnlatebnsparkbnorbnthebnhotbnr
efractorybnmaterialbn-bnanswers--explosion



thebnvoltagebntobnabnresidentialbnthermostatbn-bnanswers--24

,howbnfarbnfrombnabnfuelbnoilbnburnerbnmustbnanbnelectrodebnpanelbnbebn-bnanswers--3'



regardingbnheatbnpumps,bntwobn______bndevicesbnarebnusedbn-bnanswers--expansion



abn____bnisbnabnrigidbnconnectionbnthatbnholdsbnonebnscaffoldbnmemberbninbnabnfixedbnpositionbnwithbn
respectbntobnanotherbnmember,bnorbnbuildingbnstructurebn-bnanswers--brace



onbnabn208bnvoltbnmeterbnthebnlowestbnallowablebninputbnvoltagebnisbn-bnanswers--187.2



whatbnpressurebnisbnliquifiedbnpetroliumbngasbnfedbntobnthebnburnerbn-bnanswers--11"bnWc



inbnreferencebntobncoolingbntowerbnsumpbnwater,bnwhatbnisbnthebnidealbntempbntobntestbnPHbn-
bnanswers--70-80bnF




unloadersbnarebnusedbntobnbalancebnthebn______bnonbnabnrunbncyclebn-bnanswers--load



TbnorbnFbnCopperbnwaterbntubebnhydronicbnboilersbnhasbnthebnlowestbnterminalbnmassbnperbnbtu/hrbn-
bnanswers--true




whatbnisbnthebnmaxbndistancebnanbnultravioletbnscannerbnmaybnbebnplacedbnfrombnthebnflamebn-
bnanswers--18bninches




whatbnisbnthebnnetbnfreebnairbninbnsquarebninchesbnofbnabn12"bnxbn12"bnmetalbnlouverbnopening.bn(form
ulabn=bntotalbnareabnxbn75%)bn-bnanswers--108



hotbngasbnbypassbnisbnusedbntobn_____bnanbnevaporatorbncoilbn-bnanswers--defrost



whatbnisbnanbnAbntypebnventbnmadebnofbn-bnanswers--masonry



inbnabncascadebnrefrigeratingbnsystembntwobnorbnmorebnrefrigeratingbnsystemsbnarebnconnected.bnOnebn
evaporatorbncoilbncoolsbnthebnnextbn_____bn-bnanswers--condenser

,modernbndaybnresidentialbnoilbnburnerbnmotorsbnoperatebnatbnhowbnmanybnrpmsbn-bnanswers--3450



hardbndrawnbncopperbntubingbnshouldbnnotbnbebn-bnanswers--bent



abnchimneybnforbnabnresidentialbnlowbnheatbnutilizationbnequipmentbnshallbnextendbnatbnleastbn-
bnanswers--3bnfeet




WhatbndoesbnM.A.W.P.bnstandbnforbn-bnanswers--maximumbnallowablebnworkingbnpressure



inbnabnconfinedbnspacebnthebnupperbnopeningbnsupplyingbncombustionbnairbntobnfuelbnburningbnapplian
cebnmustbnbebnabnmaximumbnofbn_______bnfrombnthebnceilingbn-bnanswers--12bninches



whatbngaugebnofbnwirebngoesbntobnanbnoilbnburnerbn-bnanswers--14bngauge



TbnorbnFbnAnbnunbalancedbnductbncanbncausebnnoisebnandbnvibrationbn-bnanswers--true



abn_____bnpersonbnisbnsomeonebnwhobnisbnablebntobnidentifybnexistingbnandbnpredictablebnhazardsbninb
nthebnsurroundingbnareabnorbnworkingbnconditionsbnthatbnarebnunsanitary,bndangerous,bnorbnhazardous
bntobnemployeesbn-bnanswers--competent




tobneliminatebnnoisebnandbnvibrationbntobncriticalbnroomsbnyoubnshouldbn-bnanswers--
flexbnconnectorbnbetweenbnductbnandbnfan



TbnorbnFbnAbnrespiratorbndoesbnnotbnneedbntobnbebnwornbnwhenbnaddingbnsulfuricbnacidbnchromatebnso
lutionbntobnpreventbnscalingbninbnabncoolingbntowerbn-bnanswers--true



whatbnisbnthebnmaximumbnlengthbnofbnabnhorizontalbnchimneybnconnectorbn-bnanswers--10bnfeet



_____bnforbnacbnandbnheatbnpumpsbncanbnbebntemperaturebninitiated/temperaturebnterminatedbn-
bnanswers--defrostbncontrols

, flamebnretentionbnheadbnoilbnburnersbnusuallybnrunbnatbnhowbnmanybnrpmsbn-bnanswers--3450



whatbnisbnthebnflashbnpointbnofbn#6bnfuelbnoilbn-bnanswers--140bndegreesbnF



abnholebnisbnrequiredbnforbnpipingbn4bninchesbnfrombnthebnbottombnofbnabn2x10bnjoistbnthat'sbn12bnfeet
bnlong,bnthebnholebnisbn2bnfeetbnfrombnthebnendbnofbnthebnjoist,bnthebnholebnisbn2bnfeetbnfrombnthebnen
dbnofbnthebnjoist.bnthebnmaximumbnallowablebnsizebnforbnthebnholebnisbnwhatbn-bnanswers--3bninches



howbnarebncopperbnjointsbnmadebnwhenbnembeddedbninbnabnsubsurfacebnfloorbn-bnanswers--
brazedbnjoints



whenbnheatingbnpipebnisbnputbninbnthebngroundbnwhatbnisbnusedbntobnkeepbnheatbnfrombntransferringbni
ntobnthebngroundbn-bnanswers--6bnmilbnpolyethylene



abn____bnisbnabndesignbnofbnstrapsbnwhichbnmaybnbebnsecuredbnaboutbnthebnemployeebninbnabnmanner
bntobndistributebnthebnfallbnarrestbnforcesbnofbnoverbnatbnleastbnthebnthighs,bnpelvis,bnwaist,bnchestbnand
bnshouldersbnwithbnmeansbnforbnattachingbnitbntobnotherbncomponentsbnofbnabnpersonalbnfallbnarrestbns
ystem.bn-bnanswers--bodybnharness



whatbnisbnthebnpurposebnofbnthebnequalizingbnlinebnonbnabnthermostaticbnexpansionbnvalvebn-
bnanswers--compensatesbnforbnlossbnofbnpressurebninbnthebnevaporator




whatbnisbnthebnpurposebnofbnthebndripbnlegbninbnabngasbnlinebn-bnanswers--collectsbncondensate



whatbnsizebnpocketbndepthbnisbnstandardbnforbnbuttonbnstrapbnlockbnwhenbnappliedbntobn24bngaugebnsh
eetbnmetalbn-bnanswers--1/2bninch



thebnmaximumbnsizebnofbnanbnoilbnsupplybnlinebnshallbnbebn-bnanswers--A+B



forcebndraftbncombustionbnblowersbn________bnairbnintobnthebncombustionbnchamberbn-bnanswers--
forces