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Withyourpurchaseofthishumidificationsystem,youhaveinvestedinahumidifier
thatoperatesontheevaporativeprinciple-nature'sownwayofaddingmoisture
- providingoptimumrelativehumidity(RH)throughouttheheatingseason.It is
verypossiblethatyouhavequestionsconcerningyournewhumidifier-questions
onwhatitcandoforyou,andwhatyoushoulddotoreceivemaximumbenefits
fromit.Thisbookletisintendedtoanswerthesequestions.
Nature,inproducinganinvigoratingcomfortableAprilday,combinesjustthe
right temperatureand the right amountof moisture.Aprilairehumidifiers
employthesameprinciple,with refinements,to giveyoutheoptimumRHfor
maximumallowablecomfortall winter long.
Theimportantconsiderationsin theevaluationof a humidifierare precise
control, sufficient capacity, trouble-free performanceand minimum
maintenance.Theoperatingprincipleof yourAprilairehumidifierprovides
all of theseadvantages.Here,briefly,isthe method:
ExceptforModels350and360,theAprilairehumidifierisinstalledtooperate
in conjunctionwith the heating,ventilating,air conditioningequipment
(HVAC)blowermotor.WhentheAprilairehumidifierControlcallsforhumidity
andtheblowermotorisoperating,waterflowstothedistributiontraylocated
at the top of the humidifier.Thewater is uniformlydistributedacrossthe
width of thetray andthrougha scientificallydesignedsystemof outlets,it
flowsbygravityovertheWaterPanel_°'evaporator,theheartofthehumidifier.
Dry,hotair is movedthroughthe moisture-ladenWater Panelevaporator
where naturalevaporationtakes place.The now-humidifiedair carrying
moistureinvaporform(nature'sownway)iscirculatedthroughoutthehome.
Models350 and 360 useservicehot water (140°Fmaximum)for a heat
source,as heat is neededfor evaporation.While the water goingto the
humidifieris hot,the flushingwater to thedrainwill becold.Theheatis
extractedduringthe evaporationprocess.
The correctwater flow is determinedby an orifice providedwith
each draintypehumidifier.Whenthe humidifierisoperating, there
will be a small, steady stream of water to drain, which flushes
away mostofthetrouble-causingminerals.
Donot usethesaddlevalvetoregulatethewater flow. It isdesigned
to he completelyopen or closed.
Themineralsandsolidresiduenottrappedbythe replaceableWaterPanel
evaporatorareflusheddownthedrainintheModels350,360,500A,500M,
600A,600M,700Aand700M.Thisisthemosteffectiveandleastexpensive
methodto disposeof trouble-causingminerals.Thedrainalsoeliminates
theproblemscausedbystagnantwater.
Therearesomehomeswheredrainfacilitiesarenotaccessibleoravailable.
Forthesesituations,orwherehighwater hardnessisnota problem,Models
400Aand400Maredesignedtosatisfytheseapplications.
Trouble-freeperformanceand minimummaintenanceare assuredbythe
designfeaturesoftheAprilairehumidifier.All humidifierhousingpartsthat
comein contactwith water are non-metalandwill neverrustor corrode.
Neitherheatnorwater will affectthemundernormaloperatingconditions.
The Water Panel_' evaporator,designed especially for uniform, high
evaporation,andtheScaleControlInsert(whichencasestheWater Panel)
efficientlytrapsmineraldepositswhichare often thecauseof damageto
workingpartsin ordinaryhumidifiers.Whenproperlymaintained,no"white
dust"will bedistributedthroughthe livingquarters.The Water Panel
evaporator is the heart of the humidifier and must be in good
condition to assure high capacity trouble-free performance. It
should be changed at least annually with the exception of the
Models400Aand 400Mwhich shouldbe changedat leasttwice per
heatingseason.
Thedistributiontray incorporatesa syntheticfabriclinerthat isdesignedto
deliverwater uniformlyoverthe entire top surfaceof the Water Panel
evaporator,providedthe humidifieris mountedlevel.It is normalfor some
mineraldepositsto form in the distributiontray as it driesout between
humidificationcycles.Thesedepositscanactuallyhelp distributewater in
thetray,butiftheyblocktheopenings,theyshouldberemovedasdescribed
in the"PeriodicPreventativeMaintenance"sectionofthis manual.
YourAutomaticDigital HumidifierControlworksin conjunctionwith your
HVACto controltheoperationof thehumidifier.Thecontrolsensesindoor
RHandoutdoortemperatureandautomaticallyadjuststhe operationtime
ofthe humidifierto providethe optimumhumiditylevelin thehome.
ThedigitalreadoutontheautomaticcontroldisplaystheRHlevelinsidethe
coldair returnduct.RHisa measureoftheamountof moistureintheairas
apercentageofwhat theaircanhold.Warmaircanholdmoremoisturethan
coldair can.Thisreadingwill accuratelyindicatethe RHinthe livingspace
when the HVACblower is operating.Oncethe HVACblowerstops,the
readoutwill notchange.
Thecontrolhaslightswhich indicatehumidifieroperation,whenthewater
panelneedsto be replacedandwhen serviceis required.See"Operating
instructions"formoreinformation.
Thereare manyhumidifierson the market.Theyall addmoisture.., with
varyingdegreesof efficiency.None,however,offer the features,design,
andperformanceincorporatedintoyournewAprilairehumidifier.
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