Nu-Calgon 4716-87, 4702-87, 4701-87 User Guide

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Nu-Calgon Service Tips 3-246

HowtoTreatHumidifiers

Humidi-Treat and the NP Series are two solutions that Nu-Calgon offers to resolve common scale difficulties that develop in humidifiers.

Select the appropriate product for your humidifier based on system capacity:

• Use Humidi-Treat in humidifiers with a daily water capacity less than or equal to 25 gallons.

• Use the NP Series in humidifiers with a daily water capacity greater than 25 gallons.

Please see reverse side for product information.

Advantages of Treating Humidifiers with Humidi-Treat or the NP Series:

• Reducesscaleaccumulation

• Lessfrequenthumidifiercleaning

• Helpsmaintaindesigncapacity

• Onecartridgelastsafullseason

• Veryeconomical

Application:

Evaporativepowerhumidifiersusingrecirculatedwateror rotatingevaporativesurfacesareoftentroubledwithlossof capacityandefficiencyduetostickingsolenoidvalvesand thebuildupoflimescaledepositsonevaporativesurfaces. Ifunchecked,theseproblemscaneventuallycausethe humidifiertostopoperating.

Humidifiermanufacturersrecommendperiodicinspection and,whennecessary,removalofscaledepositsthrough cleaning.However,thefrequentcleaningnecessaryto maintainratedcapacitycanbeverytimeconsumingand costly.Thisinconvenienceisoftenamplifiedinareaswhere thesupplywaterhasaparticularlyhighcontentofdissolved solids.Alternatively,youcansavetimeandresolveissues createdbyscaleaccumulationbyimplementingapreventative maintenanceprogrambymeansoffiltrationwithNu-Calgon’s Humidi-TreatorNPSeries.Propertreatment,incombination withableed-off(a“draining-away”orperiodicdumpof reservoirwater),reducesscalebuildupandremovessediment tothepointwheretheynolongerconstituteamajorproblem.

ProductNumber:4190-02

1/4inchJohnGuestfittings

Treating Smaller Humidifiers with Humidi-Treat:

Forhumidifiersystemsusingupto25gallonsofwater perday,scaleinhibitioncanbeaccomplishedbyinstalling Humidi-Treatonthewaterlinethatsupplieswaterdirectly tothehumidifier.Beforeeachheatingseason,cleanthe padorinstallanewpadbeforeinstallingHumidi-Treat.

2008AltomCt.•St.Louis,MO63146•800-554-5499•www.nucalgon.com

Humidi-Treat Installation Steps:

1. Shutoffwater.

2. Disconnectexistingfilterorcutwaterlinewhere filteristobeinstalled.

3. InstallwaterlinedirectlyintotheJohnGuestfitting ateachendoftheHumidi-Treatcartridge. Noadditionalfittingsortoolsnecessary.

4. Insureproperdirectionofwaterflowandconnect inletandoutlet.

5. Carefullyturnonthewaterandcheckforleaks.

6. Checkthefilterafterapproximately8hoursfor slightleaksnotvisibleduringinitialinstallation.

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Description of the NP Series:

TheNPSeriesHousingsareconstructedofpolypropylene plastic.TheheadsaretappedwithFPTconnectionson theinletandoutletandtheyareequippedwithapressure reliefbuttontofacilitateservice.TheNP24DDHousing has3/8˝FPTconnectionswhiletheNP48DDHousinghas 1/2˝FPTconnections.Allaredesignedwith“outside-in” directionalflowofthewater,resultinginmoreefficient filtering.Bothareratedto125psimaximumpressureand 80ºFmaximumtemperature.TheNP24DDutilizesthe “24”sizecartridgeswhiletheNP48DDusesthe“48”size. Thehousingcomesequippedwithamountingbracket andthecartridgeispackagedseparately.

TheNP48PS,NP246R,andNP486RCartridgeswill removesedimentandinhibitlimescaleformation.They includeapolypropylenefilterthateffectivelyremoves silt,dirtandsediment.Inaddition,thecartridgescontain 6RMicromet,aNSF-certifiedscaleinhibitor.Thisslowly soluble,food-gradepolyphosphatedissolvesslowly overtime,providingacontrolledlevelofscale-inhibiting phosphate.Whenproperlysized,theNPSerieswill providesixmonthsoftreatment.

Using the NP Series to Filter Humidifiers:

UsetheChartAtoidentifytheappropriatefiltration componentsoftheNPSeriesforyourhumidifierbased ondailycapacityofwater.

Chart A

Daily Capacity

NP Housing NP Cartridge

of Water

Upto60gallons

NP48DD (Part#4714-24)

Upto100gallons NP24DD

(Part#4704-24)

Upto200gallons NP48DD

(Part#4714-24)

NP48PS (Part#4717-87)

NP246R (Part#4705-87)

NP486R (Part#4715-87)

Installing the NP Series:

1. Turnoffwaterandelectricalpowertohumidifier.

2. Followcleaninginstructionsprovidedbyunit manufacturer.Ifnoneareavailable,LiquidIceMachine CleanerfromNu-Calgoncanbeusedforremoving thelimescaledepositsfromhumidifiers.Thoroughly rinseallcleanedpartswithfreshwater.

3. Itisrecommendedthatyouinstallashut-off-valve onthewatersupplylineasshowninthediagram.A secondshut-off-valveconnectedontheoutletsideof thehousingmaybedesirableonsomeinstallationsto preventbackflowofwaterwhenchangingcartridges.

4. Selectpointofinstallationsothatthehousing’s mountingbracketcanbeproperlyutilized;the installationshouldbeselectedsothatthebracketcan bemountedtoawallorwallstud.

5. Connecthousing’sinletporttoshut-off-valveand theoutletporttowaterlinewith3/8”or1/2”MPT nipples(notincluded).Usethe3/8”MPTnipplesfor theNP24DDHousingorthe1/2”MPTnipplesforthe NP48DDHousing.

6. Mountthebrackettowallstudorotherpermanent surfaceandattachhousingheadtobracketusingthe fourpointedscrews.

7. Removeplasticwrapandinsertthecartridgeinto housingbowl.

8. Screwhousingbowlontothehousingcapandhand tighten.(Noneedtousetoolsfortightening).

System Test:

1. Openinletsideofshut-off-valveandallowwaterto flowthroughthefiltrationsystem.

2. Checkforleaks.

3. Makenoteofdateormarkthedateofinstallationon housinginordertoreplacethecartridgeeverysixmonths.

NP Cartridge Replacement:

1. Shutoffwatersupplyatthevalve.

2. Pressredpressurereliefbuttontoreleasepressure.

3. Withpressurefullyreleased,unscrewbody.Body wrenchesareavailableasareplacementpartalthough itshouldnotbenecessaryifbodywashand-tightened atlastservice.

4. Dumpoutwater,discardoldcartridgeandinserta newcartridgeafterremovingplasticwrap.

5. Inspectthehousingbody“O”ring.Ifnecessary, lubricateverylightlywithpetroleumjelly.

6. Insertbodyintoheadandscrewtogetherhandtight.

7. Openwatersupplyvalveandcheckforleaks.

TestedandcertifiedtoNSF InternationalagainstANSI/NSF Standard42materialsonly

Calgonisalicensedtradename.