section
Recommendedxf-xfcorrectxfanswer✔ ✔
Thexfconditionsxfarexfnarrower,xfandxfrepresentxfthexftargetxfconditionsxfatxf
whichxfthexfhardwarexfenvironmentxfshouldxfbexfmaintainedxfforxfoptimalxfrel
iabilityxfandxfperformance.
AllowablexfSpecificationsxf-xfcorrectxfanswer✔ ✔
Specificationsxfarexfgenerallyxfquitexfvariedxfandxfdefinexfthexfmaximumxfli
mitxfthatxfthexfhardwarexfshouldxfneverxfexceed.xfExample,xfmayxfaccommod
atexfwarmxftemperatures,xfbutxfthatxfmayxfnotxfbexfbestxfforxfthexfhardwarexftoxf
achievexfthexfmostxfreliablexfoperation.
Humidityxfandxftemperaturexf-xfcorrectxfanswer✔ ✔
WhatxftwoxfmetricsxfisxfthexfHVACxfsystemxftryingxftoxfcontrolxfinxfaxffacilit
y?
Conductivexfanodicxffilamentxf(CAF)xfFormationxf-xfcorrectxfanswer✔ ✔
isxfaxfwell-
studiedxfphenomenonxfdrivenxfbyxfchemical,xfhumidity,xfvoltage,xfandxfmech
anicalxfmeans.
Letentxfheatxfofxffusionxf-xfcorrectxfanswer✔ ✔
Thexfamountxfofxfheatxftoxfmeltxfice.
, ColdxfLiquidxfHVACxf-xfcorrectxfanswer✔ ✔
HVACxfsystemxfisxfhelpfulxfinxfhotxfdesertxfclimates--
takingxfairxfthatxfneedsxftoxfbexfcooledxfintoxfthexfHVACxfunitxfintake.xfThexfint
akexfairxfgoesxfthroughxfstagesxfbeforexfitxfisxfsentxftoxfthexfdataxfcenter.
DownflowxfMethodxf-xfcorrectxfanswer✔ ✔
ThexfmostxfcommonxfairflowxfpathxfusedxfbyxfCRACxfunits,xfaxfcombination
xfofxfreturnxfairxfenteringxfthexftopxfofxfthexfunitxfandxfsupplyxfairxfbeingxfdischar
gedxffromxfthexfbottomxfofxfthexfunit.
DischargedxfAirxf-xfcorrectxfanswer✔ ✔
airxftypicallyxfemptiesxfintoxfaxfraisedxffloorxfplenumxfbelowxfthexfelectronicx
fequipmentxfracks.xfThexfairxfsupplyxfpressurizesxfthexfraisedxffloorxfplenumxfa
ndxfthenxfexitsxfthroughxfcoldxftiles,xfwhichxfarexfperforatedxffloorxftilesxflocate
dxfnextxftoxfthexfrack-mountedxfequipment.
Up-flowxfMethodxf-xfcorrectxfanswer✔ ✔
Thexfcoldxfsupplyxfairxffromxfthexfunitxfcanxfbexfdischargedxfthroughxfthexfbot
tom,xfthexffront,xforxfthroughxfthexftop.xfThexfwarmerxfreturnxfairxfcanxfalsoxfbexf
configuredxftoxfenterxfthexfCRACxfunitxffromxfthexffront,xfthexfrear,xforxfthexftop
DirectxfExpansionxf-xfcorrectxfanswer✔ ✔
WhatxfisxfthexfmostxfcommonxfairxfconditioningxfsystemxfusedxfinxfHVAC?