94% condensing tankless water heater ap15897 (03/11) printed in usa *allmodelsavailablefornaturalgas(n)or propanegas(p)usage. Donotdestroymanual.Pleaseread carefullyandkeepinasafeplace forfuturereference. Certified r directventmodels rheem/ecosense crtgh-95dv* crtgh-84dv* cecoh200dv* cecoh160dv * ru...
Importantsafetyinformation safety precautions ..................................................................... 2–8 productinformation product information ........................................................................ 8 specifications ......................................................
Safety 3 important safety information d a n g e r flammables flammable vapors water heater has a main burner flame. The main burner flame: 1. Which can come on at any time and 2. Will ignite flammable vapors. Vapors: 1. Cannot be seen, 2. Are heavier than air, 3. Go a long way on the floor and 4. Ca...
4 important safety information water supply safety dangers: •watertemperaturesettings –safetyandenergyconservation arefactorstobeconsideredwhen selectingthewatertemperature settingofawaterheater’sremote control.Watertemperaturesabove 125°f(52°c)cancausedeathor severeburnsfromscalding.Besure toreadan...
5 important safety information warnings: • the installationofgaspipingmustconformtolocal utilitycompanyrequirementsand/orintheabsenceof localcodes,usethelatesteditionofnationalfuelgas code(nfgc),ansiz223.1/nfpa54,orcan/csab149.1, naturalgasandpropaneinstallationcode. •installagaspressureregulatorint...
6 important safety information beforeoperatingthiswaterheater,besuretoreadand followtheinstructionsonthelabelpicturedbelowandall otherlabelsonthewaterheater,aswellasthewarnings printedinthismanual. Failuretodosocanresultinunsafeoperationofthewater heater,resultingindeath,personalinjury,orpropertydam...
7 important safety information electrical safety danger: shockhazard–makesurethe electricalpowertothewaterheaterisofftoavoid electricshockthatwillresultindeathorseriouspersonal injury. Warnings: •foryoursafety,theinformationin thismanualmust befollowedtominimizetheriskoffire,explosion,or electricsho...
8 important safety information general installation and maintenance safety warnings: • thiswaterheatermustbeinstalledinaccordance withtheseinstructions,localcodes,utilitycompany requirementsand/orintheabsenceoflocalcodes, usethelatesteditionoftheamericannational standard/nationalfuelgascode(nfgc),an...
9 product information product information 30 3 / 8 " (772 mm) 27 5 / 8 " (702 mm) 3 3 / 8 " (86 mm) 5 1 / 2 " (140 mm) 6 1 / 4 " (159 mm) 17 7 / 8 " (454 mm) 18 5 / 8 " (473 mm) 9 3 / 4 " (248 mm) 2 1 / 4 " (59 mm) 5 1 / 2 " (140 mm) 6 1 / 8 " (156 mm) 2 1 / 8 " (54 mm) 3 7 / 8 " (98 mm) 2 7 / 8 " (...
10 product information specifications brand 157kbtumodels 199.9kbtumodels rheem ecosense ruud reliance paloma crtgh-84dv*andcrtgh-84x* cecoh160dv*andcecoh160x* rhcgh160dv* cphh-25rdv*andcphh-25rof* crtgh-95dv*andcrtgh-95x* cecoh200dv*andcecoh200x* crutgh-95dv*andcrutgh-95x* rhcgh200dv* cphh-32rdv*an...
11 product information general descriptions typical direct-vent water heater (shown without venting) product information remote control with power switch to hot water faucet(s) drain valve water filter cold water supply shut-off valve *note: a flexible drain tube can be used to suitable drain to sui...
12 product information typical outdoor water heater (no venting required) remote control with power switch to hot water faucet(s) drain valve water filter air inlet hard-wire flue terminal cold water supply shut-off valve power supply cord (not supplied) union union manual gas supply line shut-off v...
13 use instructions using your water heater warning: flammablevaporscanbe drawnbyaircurrentsfromsurroundingareasto thewaterheater.Vaporscanignitecausingdeath, personalinjury,orproductdamage. •donotstoreoruseflammableorcombustible materials(gasoline,paintthinner,adhesives, solvents,newspapers,rags,mo...
14 use instructions using your water heater maximumwatertemperatureoccurswhilethe waterheaterburnerison.Todeterminethewater temperature: turnonthehotwaterfaucetandplaceathermometer inthewaterstream. Notice: watertemperatureatthefaucetmay varydependingontheseasonandthelengthofpipe fromthewaterheater....
15 caring for your water heater waterheaterinspections ventingsystem (directventonly) the ventingsystemshouldbeinspectedperiodicallyto ensurealloftheventsectionsaresecureandairtight. Qualifiedservicepersonnelarefamiliarwithvent systeminspections. Warning: donotoperatethewater heateriftheventsystemsh...
16 caring for your water heater burner itisrecommendedtheburnerbeannuallyinspectedby aqualifiedservicetechnician. Danger: shockhazard–removingthe frontcoverpanelexposesyoutoliveelectricity. Electricshockwillcausedeathorseriouspersonal injury. Remove6screwsandtheunitcoverpanel. Turnonahotwaterfaucet....
17 caring for your water heater careandcleaning danger: shockhazard–makecertain powertothewaterheaterisoffbeforeremoving protectivecoverforanyreason.Electricshockwill causedeathorseriouspersonalinjury. Warning: combustiblematerials, suchasclothing,cleaningmaterials,orflammable liquids,mustnotbeplace...
18 caring for your water heater caution: donottaporforcethefilter duringremoval.Thiscandeformand/ordamagethe filter. Unscrewthewaterfilterfromthebaseofthecold waterinletlineandcarefullyslideitoutoftheline. Cleanthewaterfilterunderrunningwater.To removeseveresedimentanddirt,useasoftbrush. Caution: do...
19 caring for your water heater preventivemaintenance warning: failuretoperformroutine preventivemaintenancecanpreventthewater heaterfromoperatingproperly.Improperoperation cancausecarbonmonoxidedangers,excessive watertemperatures,andotherpotentiallyhazardous conditionsresultingindeath,personalinjur...
20 care instructions caring for your water heater drainingthewaterheater warning: failuretofollowthesedraining instructionscancauseseriouspersonalinjuryfrom scaldingand/orproductdamage. Turnoffthewaterheaterbypressingthepower on/offbuttononthecontrolpanel. Closethegasshut-offvalve(s). Atleast10secon...
21 care instructions caring for your water heater caution: evenwhendrainedproperly,a smallamountofwaterwillremaininthewaterheater. Incoldweatherconditions,thiswatercanfreeze. Ifthishappens,allowthedefrostprotectiononthe waterheateratleast30minutestomeltthefrozen water.Thewaterheaterwillnotworkproper...
22 caring for your water heater drainingthewaterheater(cont.) standarddrainmethod serviceisolatorvalvekitsmaybepurchasedfromthe manufacturer,distributor,orplaceofpurchase.The kitsincludetwofull-portisolationvalvestobeused intheinletandoutletwaterlines.Thesekitsprovide a meansforfulldiagnostictesting...
23 caring for your water heater vacationandextendedshutdown warning: failuretodrainthewater heatercancauseseriouspersonalinjuryfromscalding and/orproductdamage. Ifthewaterheateristoremainidleforanextended periodoftime,thepowerandwatertotheheater shouldbeturnedoff. Thewaterheaterandpipingshouldbedrai...
24 care instructions caring for your water heater problem possiblecause solution waternothotenough. 1. Thetemperaturemaybesettoolow. 1. Increasethetemperaturesettingat theremotecontrol. 2. Thegasvalveisnotcompletelyopened. 2. Checkandcompletelyopenthegasvalve. 3. Gassupplypressureislow. 3. Contactyo...
25 care instructions caring for your water heater serviceerrorcodechart yourwaterheaterhasanelectronicdiagnosticsystem builtintoit.Whenthewaterheaterfindsaproblem,it displaysanerrorcodeintheleddisplayontheremote control.Thefollowingchartliststheerrorcodesalong withtheirpossibleproblemandsolution.Usi...
26 errorcode possiblecause solution 1l waterheaterhasbuildupoflimedeposits. Contactadealerorqualifiedservicetechni- cian. 05 airintakeorventexhaustopeningmaybe blocked. Removeanyblockage.(airintakerequires12 in.[30cm]ofclearance.) theventpipesontheventterminationmay notbeconnectedproperly. Contactad...
Installation instructions for the contractor installation.
28 installation instructions exhaust vent pipe air intake pipe 0" min. (0 mm) 0" min. (0 mm) 0" min. (0 mm) 12" (300 mm) standardscompliance thiswaterheatermustbeinstalledinaccordancewith theseinstructions,localcodes,andutilitycompany requirements. Intheunitedstateswherelocalcodesarenot available,us...
29 installation instructions general •everyventorairintakepipepenetrationofaflooror ceilingshouldbesealed. •failuretoinstallandproperlyventthewaterheater totheoutdoorsasoutlinedonpages34through46 canresultinunsafeoperation. •longhotwaterlinesshouldbeinsulatedtoconserve waterandenergy. •thewaterheate...
30 installation instructions general productinspection •visuallyinspectthewaterheaterforanypossible damage. •checktheratingplateonthewaterheatertomake surethewaterheaterwasdesignedtobeusedwith thesuppliedtypeofgas(naturalorlp). •verifythatallincludedsuppliedpartsarepresentas shown. Waterheaterinstal...
31 installation instructions general notice: thenationalfuelgascode(nfgc)andcan/csab149.1mandateamanualgasshut-offvalve. Seenfgc/b149.1forcompleteinstructions.Localcodesorplumbingauthorityrequirementsmayvaryfromthe instructionsordiagramsprovidedandtakeprecedenceovertheseinstructions. Typicalinstalla...
32 general installation instructions waterheaterinstallation(cont.) typicalinstallationof outdoorwaterheater (noventingrequired) thiswaterheaterisforoutdoor installationonly. *note: a flexible drain tube can be used to suitable drain to suitable drain to hot water faucet(s) drain valve cold water su...
33 general installation instructions mountingthewaterheater caution: reinforcementofthewallis requiredincasethewallisnotstrongenoughto holdthewaterheater.Failuretodosocouldresultin personalinjuryand/orproductdamage. Themountinglocationforthewaterheatershould allowforeasyaccessandoperation. Thewaterh...
34 installation instructions ventingfordirect-ventwaterheater danger: failuretoproperlyventthewater heatertotheoutdoorsasoutlinedinthisventing sectionwillresultindeathorseriouspersonalinjury. Toavoidtheriskoffire,explosion,orasphyxiation fromcarbonmonoxide,neveroperatethewater heaterunlessitisproper...
35 installation instructions venting notice: touse2-inchventpipe,areducing adapterorbushingwillberequired. Warning: tousecategoryiiistainlesssteel,apropertransition partwillberequiredtopreventfluegasfromleaking. Dependingonthesizeofpipethatischosenfor ventingthewaterheater,itmightbenecessarytouse af...
36 ventingfordirect-ventwaterheater(cont.) inthecommonwealthof massachusetts thecommonwealthofmassachusettsrequirescompliance withregulation248cmr4.00and5.00forinstallationof through-the-wallventedgasappliancesasfollows: 5.08:modificationstonfpa–54,chapter10 (1)revisenfpa–54section10.5.4.2byaddingas...
37 installation instructions horizontalventterminallocation outside walls fixed closed fixed closed operable operable v v v v v v x x v v interior wall vent terminal air supply inlet area where terminal is not permitted b b a j i b m m f c k h v v d e b l g a x venting.
38 installation instructions ventingfordirect-ventwaterheater(cont.) location u.S.Installation requirements 1 canadianinstallation requirements 2 a=clearanceabovegrade,veranda, porch,deck,orbalcony. 12in.(30cm) 12in.(30cm) b=clearancetowindowordoorthatmay beopened. • 6in.(15cm)forwaterheaterslesstha...
39 venting installation instructions horizontalventconsiderations warning: moistureinthefluegaswill condenseasitleavestheventterminal.Incold weatherthiscondensatecanfreezeontheexterior wall,undertheeaves,andonsurroundingobjects. Somediscolorationtotheexteriorofthebuilding istobeexpected.However,impr...
40 venting installation instructions ventingfordirect-ventwaterheater(cont.) exhaust vent pipe air intake pipe wall plate (recommended) inspection access panel (optional) inspection access panel (optional) ceiling downward slope to outside termination 12" (300 mm) approximately 4” recommended horizo...
41 installation instructions horizontalventinstallation(cont.) fastenerswillvarydependingonthewalltype. Forparticleboardor compositesheathing,use 4hollowwallanchors.The anchorsshouldbeatleast 1/8in.(0.3cm)indiameter andtheappropriatelengthfor thesheathingthickness. Forplywoodorsolidwood sheathingorm...
42 venting installation instructions ventingfordirect-ventwaterheater(cont.) alternativehorizontalventinstallations exhaust vent pipe air intake pipe inspection access panel (optional) inspection access panel (optional) ceiling downward slope towards termination 1" from wall is recommended exhaust v...
43 installation instructions vertical vent installation warning: improperventinstallationcan resultindeath,personalinjury,productdamage,and/ orpoorperformance. Notices: •onlyrheem-approvedandulcs636approved terminationandpartsmustbeusedduring installation. •maintaintherecommendedairspaceclearance to...
44 venting installation instructions vertical vent terminal location a, b 12" min. (300 mm) vent pipe through roof optional the followingchartwithdiagramsdetailstheminimumdimensionalinformationneededtodeterminetheproper locationoftheverticalventterminalfordirect-ventindoortanklesswaterheaters: locat...
45 installation instructions adjustable roof flashing support clamp upward slope support hanger air intake pipe exhaust vent pipe condensate drain optional standardverticalventtermination to suitable drain venting.
46 installation instructions support hanger adjustable roof flashing support clamp upward slope air intake pipe exhaust vent pipe minimum clearance 18 inches above roof condensate drain alternativeverticalventtermination ventingfordirect-ventwaterheater(cont.) alternativeverticalventterminationkitsa...
47 installation instructions caution: thiswaterheatermustonly beusedwiththefollowingwatersupplyconditionsto preventproductdamageandoperationfailure. •clean,potablewaterfreeofcorrosivechemicals, sand,dirt,orothercontaminates. •inletwatertemperaturesabove32°f(0°c),butnot exceeding120°f(49°c). •donotre...
48 plumbing installation instructions watersupply water supply installation notices: •useonlyteflontapeonallcoldandhotwater connections. •ifthewaterflowresistanceofashowerheadis toohigh,theburnerinthewaterheaterwillfailto ignite.Keepallshowerheadscleanfromdebristhat couldcauseadditionalpressuredrop....
49 installation instructions opentheshut-offvalveinthecoldwaterinletline tocheckthewaterflowthroughthewaterheater. Closetheshut-offvalveandremove,clean,and replacethewaterfilter. Notices: •besuretoconnectthecoldwaterinletandthe hotwateroutletasshownonthewaterheater.If reversed,thewaterheaterwillnotf...
50 plumbing installation instructions watersupply(cont.) relief valve anewpressure-reliefvalve,complyingwiththe standardforreliefvalvesandautomaticgasshut-off devicesforhotwatersupplysystems,ansiz21.22/ csa4.4,mustbeinstalledatthehotwateroutlet connectionofthewaterheaterduringinstallation. Localcode...
51 installation instructions warnings: •whenpipeinsulationisnotratedfortheappropriate weatherconditions,installelectricheattracingor equivalenttopreventfreezingofthepipes. •donotinsulateorblockdrainvalveonthehotoutlet fitting. •ifpipesareallowedtofreeze,thewaterheaterand thepipesmaymalfunctionorleak...
52 gas supply installation instructions gas supply connections warning: donotattempttoconvert thiswaterheaterforusewithadifferenttypeofgas otherthanthetypeshownontheratingplate.Doing socouldresultindeath,personalinjury,explosionor fire,productdamage,and/orpooroperatingconditions orperformance. Notic...
53 installation instructions gas piping pipe-sizingprocedure–example thegassupplymustbecapableofhandlingtheentire gasloadatthelocation.Gaslinesizingisbasedon gastype,thepressuredropinthesystem,thegas pressuresupplied,andgaslinetype.Forgaspipe sizingintheunitedstates,refertothenationalfuel gascode,nf...
54 gas supply installation instructions gas supply installation installthemanualgasapplianceshut-offvalveto thegasconnectionatthewaterheater.Theshut- offissuppliedwiththewaterheater. Installagroundjointunionoransidesign-certified semi-rigidorflexiblegasapplianceconnectorto theopenendofthemanualgasap...
55 installation instructions leak testing warning: neveruseanopenflameto testforgasleaks,becausedeath,personalinjury, and/orpropertydamagecanresult. Thewaterheateranditsgasconnectionsmustbe leak-testedatnormaloperatingpressuresbeforethe unitisplacedinoperation.Thesetestsshouldalso includeallfactoryc...
56 electrical installation instructions gas supply (cont.) electrical wiring danger: shockhazard–beforeservicing thewaterheater,turnofftheelectricalpowertothe waterheateratthemaindisconnectorcircuitbreaker. Failuretodosowillresultindeathorseriouspersonal injury. Warning: fieldwiringconnectionsand el...
57 installation instructions wiring diagram fl ame r od 2 Électr ode de dÉtection de fl amme 2 31-98419 2 neutr alizer wa ter le vel electr ode r r Électr ode de nivea u d’ea u de neutr alisant 2 1 p g rÉsist ance ver t/ja une g/y : green/ yell ow , ac 120v o: or ange , or ange usu all y disc onnect...
58 electrical installation instructions remote control selection and location warning: fieldwiringconnectionsand electricalgroundingmustcomplywithlocalcodesor, intheabsenceoflocalcodes,withthelatestedition ofthenationalelectricalcode,ansi/nfpa70,orin canada,canadianelectricalcode,can/csac22.1, part1...
59 installation instructions remote control installation warning: fieldwiringconnectionsand electricalgroundingmustcomplywithlocalcodesor, intheabsenceoflocalcodes,withthelatestedition ofthenationalelectricalcode,ansi/nfpa70,orin canada,canadianelectricalcode,can/csac22.1, part1. Notices: •remotecon...
60 electrical installation instructions connectingtheremotecontroltothewaterheater: ensurethatthepowertothewaterheaterhasbeen disconnected. Loosentheonescrewlocatedontheremotecontrol connectioncover.Theconnectioncoverismadeof whiteplastic. Notice: donotremovefrontpanel. Remotecontrolwiresareconnecte...
61 installation instructions insulation blankets ingeneral,insulationblanketsforexternaluseon gaswaterheatersarenotnecessary.Thepurposeof aninsulationblanketistoreducethestandbyheat lossfromthewaterheater’sstoragetank.Sincethese waterheatersdonotstorewater,theyeliminatethe needfortheinsulationblanke...
62 checklist installation instructions condensatedrainisproperlyinstalled. F.Condensate installation checklist indoorwaterheatersmustbeinstalledindoors. Outdoorwaterheatersmustbeinstalled outdoors. Closetoareaofventilationtermination(indoor models). Protectedfromfreezingtemperatures. Properclearance...
63 installation instructions piping for space heaters localcodesorplumbingauthorityrequirementsmay varyfromtheinstructionsordiagramsprovidedinthis manual andtakeprecedenceovertheseinstructions. Combinationpotableandspace heatingapplication dangers: •whenthissystemrequireswaterforspaceheatingat eleva...
64 start/adjust installation instructions lighting the water heater warning: beforeoperatingthiswater heater, be sure to read and follow the instructions on thefollowinglabel,alllabelsonthewaterheater,and the “important safety information” section in this manual.Failuretodosocanresultinunsafeoperati...
65 installation instructions operating instructions read,understand,andfollowthesafetyinformation listedontheoperatinglabelonpage64andinthe “importantsafetyinformation”sectioninthismanual. Disconnectallelectricpowertothewaterheater. Turnthegasshut-offvalveclockwisetotheoff position.Thisvalveislocate...
66 start/adjust installation instructions setting the water temperature warning: improperadjustment, alteration,service,ormaintenancecanresultin death,personalinjury,propertydamage,and/or productdamage. Maximum temperature adjustment by the main remote control (umc–117) danger: watertemperaturesabov...
67 installation instructions while“120”isblinking,presstheupanddown adjustmentbuttonsatthesametime.“120”will stopblinking. Presstheupordownadjustmentbuttontosetthe desiredtemperature. Turnonthegasandwatertothewaterheaterby openingtheshut-offvalves. Tolimitmaximumwatertemperaturesetting to120°f(49°c)...
68 start/adjust installation instructions minimum temperature adjustment by the main remote control (umc–117, usc1–117, and usc2–117) residentialwaterheatertemperaturescanbeadjusted downto85°f(29°c),whenrequired. Tochangethetemperaturesettingsdownto 85°f(29°c): turnontheremotecontrol. Turnoffthegasa...
69 installation instructions high-altitude dip switch adjustments (cont.) printed circuit board (pcb) dip switches 3 dip switch adjustment 3,280 feet (1,000 m) thru 6,560 feet (2,000 m) 5 2 removethefrontcoverpanelonthewaterheater. Finddipswitch2locatedinthetop-rightportionof thepcb.Theswitchlabeled...
70 parts parts replacement parts ordering warning: foryoursafety,donotattempt to disassemble, repair, or replace any portion of this unit.Referallrepairs,service,and/oradjustmentsto qualified service personnel. Addressallpartsorderstothedistributororstore where the water heater was purchased. All pa...
71 parts replacement parts ordering (cont.) outdoor gas components ref# description 1 controlboard 2 gasvalve 3 burnerassembly 4 blowermotor 5 burnermanifold 6 gasinletconnector 7 watercontrolbody 8 waterinletconnector3/4" 9 inletwaterfilter 10 hotoutletconnector 11 remotecontrolterminalblock 12 neu...
72 notes notes.