MD HVAC MASTERS EXAM QUESTIONS WITH CORRECT ANSWERS

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MD HVAC MASTERS EXAM QUESTIONS WITH CORRECT ANSWERS

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12 pages

2025/2026

Institution DC MASTER AIR CONDITIONING AND REFRIGERATION

Course DC MASTER AIR CONDITIONING AND REFRIGERATION

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MD HVAC MASTERS EXAM QUESTIONS WITH CORRECT ANSWERS

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MD HVAC MASTERS EXAM
QUESTIONS WITH CORRECT
ANSWERS
ForOmechanicalOdraftOsystem,OexitOterminalOlocatedOadjacentOtoOpublicOwalkwaysOshallObeOnoOless
OthanO____________OfeetOaboveOfinishOgroundOlevel.O-OCORRECTOANSWERS-7

AO2000Osq.Oft.O"TypeOII"Odry-
cleaningOsystemsOshallObeOprovidedOwithOanOexhaustOnoOlessOthanO__________OCFM's.O-
OCORRECTOANSWERS-2000

AObathroomOinOaOdwellingOunitOmustObeOprovidedOwithOaOminimumOintermittentOexhaustOofO____
______.O-OCORRECTOANSWERS-50OCFM

AOhot-
waterOheatingOboilerOthatOhasOaO5,000,000OBTU/HROinputOshallOhaveOaOminimumOclearanceOofO__
___________OfromOtheOtopOofOtheOboilerOtoOtheOceiling.O-OCORRECTOANSWERS-3Ofeet

AOheaterOinstalledOinOaOpublicOgarageOmustObeOinstalledOaOminimumOdistanceOofO____________Oa
boveOtheOfloor?O-OCORRECTOANSWERS-8Ofeet

______________OisOaOtubeOorOpipeOusedOtoOcarryOrefrigerantOgasOfromOevaporatorOtoOtheOcompre
ssorO-OCORRECTOANSWERS-SuctionOline

CommercialOapplianceOexhaustOoutletsOthatOterminateOaboveOroofOshallOhaveOtheOdischargeOopen
ingOlocatedOnotOlessOthanO___________OinchesOaboveOtheOroofOsurface.O-OCORRECTOANSWERS-40

AOrunOwindingOinOaOcompressorOhasO_____________OresistanceOthanOtheOstartOwinding.O-
OCORRECTOANSWERS-Less

, AOductOthatOhasOanOoperatingOtemperatureOofO150OdegOFOshallObeOinsulatedOtoOlimitOtheOexposedO
surfaceOtemperatureOtoO___________.O-OCORRECTOANSWERS-120O°F

HydronicOpipeOsystemOshouldObeOcleanedOwithOwaterOandO_____________OafterOinstallation.O-
OCORRECTOANSWERS-TrisodiumOPhosphate

UsingOaOpsychrometricOchartOinOtheOModernORefrigeration,OwhatOwillOtheOwetObulbObeOifOtheOdryO
bulbOisO80OdegreesOandOtheOhumidityOisO30%?O-OCORRECTOANSWERS-60O°F

OutsideOairOexhaustOandOintakeOopeningsOshallObeOlocatedOaOminimumOofO____________OfeetOfro
mOlotOlinesOorObuildingOonOtheOsameOlot.O-OCORRECTOANSWERS-10

DownO-OpipeOsupportOmaterialOmustOnotOpromote:O-OCORRECTOANSWERS-GalvanicOaction

CentralOHVACOsystemsOshallOhaveOairOfiltersOinstalledOinOwhichOofOtheOfollowingOlocations?O-
OCORRECTOANSWERS-UpstreamOfromOanyOexchangerOcoil

AnOauxiliaryOdrainOpanOusedOinOsecondaryOdrainOsystemsOforOanOa/cOsystemsOshallOhaveOaOminimu
mOdepthOofO________Oinch.O-OCORRECTOANSWERS-1O½

AOventilationOsupplyOsystemOshallOdeliverOtheOrequiredOrateOofOsupplyOairOwithinOanOoccupiedOspa
ceOminimumOofO____________OaboveOtheOfloor.O-OCORRECTOANSWERS-3"

InOaOunitOcontrolledObyOaOthermostatOtheOdifferentialOisOtheOdifferenceObetweenO____________.O-
OCORRECTOANSWERS-

TemperatureOatOwhichOtheOswitchOturnsOtheOburnersOonOandOtheOtemperatureOatOwhichOtheOswitc
hOturnsOtheOburnersOoff

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Uploaded on: January 17, 2026
Number of pages: 12
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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