Takagi T?H2?DV Manual de usuario



TH2DV/TH2OS

OnDemandCondensingWaterHeater

InstallationManualandOwner’sGuide



FEATURING

xENDLESSHOTWATER

xONDEMANDUSAGE

xCOMPACT,SPACESAVING

xENERGYCONSERVATION

xCOMPUTERIZEDSAFETY

xNOPILOTLIGHT

xEASYLINKSYSTEM

WARNING

GasTanklessWaterHeater

ModelTH2DVandTH2OS

Suitableforpotablewaterheatingandspaceheating



TAKAGIIndustrialCo.USA,Inc.

5Whatney

Irvine,CA92618

TollFree:(888)8825244USA

TollFree:(877)8774953CANADA



This product must be installed and

serviced by a licensed plumber, a

licensedgasfitter,oraprofessional

service technician. Improper

installation and/or operation, or

installation by an unqualified

person,willvoidthewarranty.

Iftheinformationinthismanualis

notfollowedexactly,afireor

explosionmayresult,causing

propertydamage,personalinjury,or

death.

Contents

2Page

CONTENTS SPECIFICATIONS

TH2DVandTH2OS

NaturalGasInput

(OperatingRange)

Min:13,000Btu/h

Max:199,000Btu/h

LPGInput

(OperatingRange)

Min:13,000Btu/h

Max:199,000Btu/h

GasConnection ¾”NPT

WaterConnections ¾”NPT

CondensateDrainPort

Connection ½”NPT

WaterPressure 15150psi*

NaturalGasPressure

Inlet

Min.5.0”WC

Max.10.5”WC

LPGas

PressureInlet

Min.8.0”WC

Max.14.0”WC

ManifoldPressureof

theTH2DVNatural:3.2”WC

Propane:5.5”WC

ManifoldPressureof

theTH2OS

Natural:2.7”WC

Propane:4.6”WC

Weight 73lbs.(TH2DV)

70lbs.(TH2OS)

Dimensions H25.6”xW18.5”xD12.4”

Ignition ElectricIgnition

Electric

Supply 120VAC(60Hz)

Consumption

Operationof

theTH2DV

152W

(1.27A)

Operationof

theTH2OS

102W

(0.85A)

Standby 8.2W

(0.07A)

Freeze

Protection

207W

(1.73A)



SPECIFICATIONS………………………………...

INTRODUCTION……………………………….…

SAFETYGUIDELINES…………….……………..

INSTALLATION………………………………..….

General………………………………………..…

IncludedAccessories…………………..…

Optionalitems…………………………..…..

WarningforInstallations………..….....

Highaltituderegionsupportfunctions…

TH2OSInstallation…………………….…

TH2DVInstallation………..…………..…

VentingInstructions……………………....

GasSupply/GasPipeSizing………...…

WaterConnections……………..……….…

PressureReliefValve………………………

Condensatedrain…………………………..

ElectricalConnections…………….........

RemoteControllerConnection…….…

PumpControlConnection………..…….

PumpControlMode…………………….…

EasyLinkSystem…………………………....

APPLICATIONS...…………………………………

SpaceHeating……….………….……………

INITIALOPERATION..…………………….……



OPERATINGSAFETY……………………………

NORMALOPERATION…………………………

General………..……….………….……………

Temperaturesettings.…….…..…………

Flow……………………………………………….

FreezeProtectionSystem…….…………

MaintenanceandService………………

UnitDrainingandFilterCleaning……

TROUBLESHOOTING……..……………………

General………..……….………….……………

Errorcodes.…………………….…..…………

COMPONENTSDIAGRAM………………..…

PARTSLIST………………….………………………

OUTPUTTEMPERATURECHART……...…

PRODUCTREGISTORATIONAND

LIMITEDWARRANTY…………………….……



2

3

4

5

6

7

8

9



Takagi reservestherighttodiscontinue,orchange

atanytime,specificationsordesignswithout

noticeandwithoutincurringobligations.

*40psioraboveisrecommendedformaximumflow

NOTE

*Checktheratingplatetoensurethisproduct

matchesyourspecifications.

*InaccordancewithANZIZ21.10.3andSCAQMD

Rule1146.2,COemissiondoesnotexceed400

PPMfornormalinput

InstallationManual

Owne

’sGuide

Introduction

3Page

INTRODUCTION

*Thisdiagram

illustratesTakagi’s

tanklesswaterheater

designconceptsonly

anddoesnot

accuratelyrepresent

totheTH2DV/TH2

OS’sphysical

description.

xThis manual provides information necessary for the installation, operation, and

maintenanceoftheTH2DV/TH2OSwaterheater.

xThemodeldescriptionislistedontheratingplatewhichisattachedtothesidepanelof

thewaterheater.

xPleasereadallinstallationinstructionscompletelybeforeinstallingthisproduct.

xIfyouhaveanyproblemsorquestionsregardingthisequipment,consultwithTakagior

itslocalrepresentative.

xTheTH2DV/TH2OSWaterHeaterisanondemand,tanklesswaterheaterdesigned

toefficientlysupplyendlesshotwaterforyourneeds.

xTheprinciplebehindtheTH2DV/TH2OSWaterHeaterissimple:



1. Ahotwatertapisturnedon.

2. Waterenterstheheater.

3. Thewaterflowsensordetectsthewaterflow.

4. Thecomputerautomaticallyignitestheburner.

5. Watercirculatesthroughtheheatexchangerandthengetshot.

6. Thecomputerwillmodulatethegassupplyvalveandwaterflowtoproducetheright

amountofhotwateratthecorrecttemperature.

When



the



tap



turned



off,



the



unit



shuts



down.

xThe TH2DV/TH2OS are high efficiency models with an inbuild secondary heat

exchangerthatabsorbslatentheatfromtheexhaustgas.

Burner

Condensate

drainport

Secondaryheatexchanger

Thermistor

GasValve

Flowsensor

Watercontrolvalve

assvalve

Intake

ort Exhaust

Fanmotor

Primaryheat

exchanger

Thermistor

PCB

HotWaterOutlet ColdWaterOutlet

Gas

SafetyGuidelines

4Page



x

xWatertemperaturesover125°Fcancausesevereburnsinstantlyordeathfromscalding.The

watertemperatureissetat120°F(49°C)fromthefactorytominimizeanyscaldingrisk.Before

bathingorshoweringalwayscheckthewatertemperature.

xDonotstoreorusegasolineorotherflammables,vapors,orliquidsinthevicinity

ofthisappliance.

xDonotreversethewaterand/orgasconnectionsasthiswilldamagethegas

valvesandcancausesevereinjuryordeath.Followthediagramonp.19when

installingyourwaterheater:

xDonotusethisapplianceifanyparthasbeenincontactwithorbeenimmersedin

water.Immediatelycallalicensedplumber,alicensedgasfitter,oraprofessional

servicetechniciantoinspectand/orservicetheunitifnecessary.

xDonotdisconnecttheelectricalsupplyiftheambienttemperaturewilldrop

belowfreezing.TheFreezePreventionSystemonlyworksiftheunithaselectrical

power.Thewarrantywillnotbecoverediftheheatexchangerisdamageddueto

freezing.RefertothesectionontheFreezePreventionSystemonp.39formore

information.

SAFETYGUIDELINES



GENERAL



1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the

NationalFuelGasCode:ANSIZ223.1/NFPA54intheUSAorCAN/CSAB149.1NaturalGas,Propane

InstallationCodeinCanada.

2. Properlygroundtheunitinaccordancewithalllocalcodesorintheabsenceoflocalcodes,with

theNationalElectricalCodes:ANSI/NFPA70intheUSAorCSAstandardC22.1CanadaElectrical

CodePart1inCanada.

3. CarefullyplanwhereyouintendtoinstallyourTH2DV/TH2OSWaterHeater.Pleaseensure:

xYour water heater will have enough combustible air and proper

ventilation.

xLocate your heater where water leakage will not damage

surroundingareas(pleaserefertop.5).

4. ChecktheratingplateforthecorrectGASTYPE,GASPRESSURE,WATER

PRESSUREandELECTRICRATING.

*If this unit does not match your requirements, do not install and

consultwithTAKAGI.

5. Ifanyproblemshouldoccur,turnoffallhotwatertapsandturnoffthe

gas. Then call a trained technician or the Gas Company or the

manufacturer.



Prohibited

WARNING

RATINGPLATE

Installation

5Page

xInstallation and service must be performed by a qualified installer (for

example,alicensedplumberorgasfitter),otherwisethewarrantybyTakagi

willbevoid.

xTheinstaller(licensedprofessional)isresponsibleforthecorrectinstallation

ofyourTH2DV/TH2OSWaterHeaterandforcompliancewithallnational,

state

rovincial

andlocalcodes.

xThewarrantywillnotcoverdamagecausedbywaterquality.

Onlypotablewaterorpotablewater/glycolmixturescanbeusedwiththis

water heater.  Do not introduce pool or spa water, or any chemically

treatedwaterintothewaterheater.

Waterhardness levelsmustnot exceed7grains pergallon(120 ppm)for

single family domestic applications or more than 4 grains per gallon (70

ppm) for all other types of applications.  Water hardness leads to scale

formation and may affect/damage the water heater.  Hard water scaling

mustbeavoidedorcontrolledbyproperwatertreatment.

WaterpHlevelsmustbebetween6.5and8.5

Wellwatermustbetreated.

xAlthough the TH2DV/TH2OS is designed to operate with minimal sound,

TAKAGI does not recommend installing the unit on a wall adjacent to a

bedroom,oraroomthatisintendedforquietstudyormeditation,etc.

xLocateyourheaterclosetoadrainwherewaterleakagewillnotdodamageto

surrounding areas.  As with any water heating appliance, the potential for

leakageatsometimeinthelifeoftheproductdoesexist.Takagiwillnotbe

responsiblefor anywaterdamage thatmayoccur.  Ifyou install adrainpan

undertheunit,ensurethatitwillnotrestrictthecombustionairflow.

xTH2DV/TH2OS are high efficiency products that create condensation. A

condensation drain tube must be installed with the TH2DV/TH2OS to

dischargecondensateintoadrainoutlet.Formoreinformation,refertop.20.

xTAKAGIdoesnotrecommendinstallingtheTH2DVinanatticduetosafety

issues.IfyouinstallyourTH2DVinanattic:

xMake sure your unit will have enough combustion air and proper

ventilation.

xKeeptheareaaroundyourTH2DVclean.Whendustcollectsontheflame

sensor,thewaterheaterwillshutdownonerrors.

xLocateunitforeasyaccessforserviceandmaintenance.

xA drain pan, or other means of protection against water damage, is

requiredtobeinstalledunderthewaterheaterincaseofleaks.

INSTALLATION



Allgaswaterheatersrequirecarefulandcorrectinstallationtoensuresafeandefficientoperation.This

manualmustbefollowedexactly.Readthe“SafetyGuidelines”sectionatthebeginningofthismanual.



WARNING

CAUTION

PLEASEREADTHISMANUALCAREFULLYANDFOLLOWALLDIRECTIONS.

Installation

6Page



GENERAL



1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the

National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or CAN/CSA B149.1 Natural Gas,

PropaneInstallationCodeinCanada.



2. Themanifoldgaspressureispresetatthefactory.Itiscomputercontrolledandshouldnot

needadjustment.



3. Maintainproperspaceforservicing.Installtheunitsothatitcanbeconnectedorremoved

easily.Refertop.8,p.9andp.10forproperclearances.



4. Theelectricalconnectionrequiresameansofdisconnection,toterminatepowertothewater

heaterforservicingandsafetypurposes.



5. Ifyouwillbeinstallingtheunitinacontaminatedareawithahighlevelofdust,sand,flour,

aerosolsorothercontaminants/chemicals,theycanbecomeairborneandenterandbuildup

withinthefanandburnercausingdamagetotheunit.



6. Particles from flour, aerosols, and other contaminants may clog the air vent or reduce the

functionsoftherotatingfanandcauseimproperburningofthegas.Regularlyensurethatthe

area around the unit is dust or debrisfree; regular maintenance is recommended for these

typesofenvironment.



7. Donotinstalltheunitwheretheexhaustventispointingintoanyopeninginabuildingorwhere

the noise may disturb your neighbors. Make sure the vent termination meets the required

distancebylocalcodefromanydoorwayoropeningtopreventexhaustfromenteringabuilding

(refertop.15).

INCLUDEDACCESSORIES



Checkthattheinstallationmanual,thecommunicationcable,thewarrantycardandtheTHPA01PVC

adaptorareincludedwiththeunit(theadaptorcomeswiththeTH2DVmodelonly).

Fordetailsonhowtoconnecttheadaptor,refertoP.14.

1.Manual



2.Communicationcable



3.WarrantyCard



4.THPA01PVCadaptor

(TH2DVmodelonly)



:1

Qty:1

:1

Qty:1

Installation

7Page



OPTIONALITEMS

1.TMRE30TemperatureRemoteController

The TMRE30 Temperature Remote Controller has two functions.

ItallowstheoutputtemperaturefromtheTH2DV/TH2OStobe

adjustedwithintherangeof100°Fto185°F,anditalsoworksas

a diagnostic tool that will give a concise error code whenever

there is a problem with the unit. The temperature options are

100°F, 105°F, 110°F, 115°F, 120°F, 125°F, 130°F, 135°F, 140°F,

145°F,150°F,155°F,160°F,165°F,170°F,175°F,180°Fand185°F.

Seethetroubleshootingsectionforinformationonpossibleerror

codes.

2.THPC02Pipecover

TheTHPC02PipecoverprotectstheplumbingpipestotheTH2

DV/TH2OSfromunexpectedadjustments.Thispipecoveris

fixedtothebottomoftheTH2DV/TH2OS,whichhidesthe

plumbingandimprovesthevisualaspectsofthewholeinstallation

forthewaterheater.

3.TKKPWL4andTKKPWH4TVentWallthimblewithTermination



Theseterminationsareusedwhenventingoutthroughthewalland

arecompatiblewiththeTVentpipesystem.

Theseterminationsarespecialstainlesssteelventsforgasappliances

andareULlistedasCategoryII,IIIandIV.Therearetwotypesof

terminations:theLouverterminationandtheHoodtermination.For

differentwallthicknesses,thereare3rangesoflengthsavailable

(refertotheTVentbrochurefordetails).

Installtheseventterminationsinaccordancewiththeirinstallation

instructionsandanyapplicablelocalcodes.

4.THNT01Neutralizerkit



TheTHNT01Neutralizerassemblyneutralizesthecondensate

(acidicwater)thatformsinthesecondaryheatexchangerofthe

TH2DV/TH2OS.

ItconnectstothecondensatedrainportoftheTH2DV/TH2OS

byusingconnectorsincludedwiththeneutralizerkit.Refertop.

21forthedetails.





TKKPWL4



Louver

Termination

TKKPWH4



Hood

Termination

Installation

8Page



WARNINGFORINSTALLATIONS

FORYOURSAFETY,READBEFOREINSTALLATION:

Donot install the heater where water, debris or

flammablevaporsmaygetintotheflueterminal.

This may cause damage to the heater and void

thewarranty.



Do not have the vent terminal pointing toward

any opening into a building. Do not locate your

heater in a pit or location where gas and water

canaccumulate.



Donotinstallthiswaterheaterunderan

overhanglessthan3feetfromitstoporeaves.

Theareaunderanoverhangmustbeopento

threesides.(TH2OSonly)



Do not install the water heater vent terminator

within1ft.intheUSAofanyairintakeorbuilding

opening, and with in 3 ft. in Canada of any air

intakeorbuildingopening.(TH2OSonly)(Refer

top.15)



Donotinstallnexttoadryeroranysourceof

airbornedebristhatcanbetrappedinsidethe

combustionchamber,unlessthesystemisdirect

vented.

Prohibited Prohibited

FORYOURSAFETY,READBEFOREINSTALLATION:

Installation

9Page

Thedarksquaresindicatethedirectionthe

dipswitchesshouldbesetto.

Leftbankofdipswitches

xThere is a 3” clearance from

the left and right sides of the

unit to combustible and non

combustible

surfaces. However, if any

portion or area of the surface

is exposed to the exhaust

fumes(i.e.directlytothesides

of the vent cap), that surface

mustbeatleast24”away.

xKeeptheclearances.

2,500 to4,000 ft 4,000to5,000ft

Altitude



HIGHALTITUDEINSTALLATIONS



Checktheelevationwhereyourwaterheaterisinstalled.Setdipswitchesshowninthetablebelow

dependingonthealtitude.Thesedipswitches(No.5andNo.6)areonthecomputerboardontheleft

bankonly.



 0to2,500ft

(DEFAULT)



Over5,000ft

SwitchNo.5 OFF ON OFF

Consult

TAKAGI

Technical

Dept.

at1888

8825244

SwitchNo.6 OFF OFF ON



TH2OSINSTALLATION

1. InstalltheTH2OSonlyinareaswithmild,temperateclimates.

2. The TH2OS shall be wallmounted or mounted on a stand. Locate the TH2OS in an open,

unroofedareaandmaintainthefollowingminimumclearances:



DONOTadjustanydipswitchesontherightbank.

ࣰࣱࣲ࣭࣮࣯ࣳࣴ





࣭ࣵ࣬





ࣰࣱࣲ࣭࣮࣯࣭ࣳࣴࣵ࣬





ࣰࣱࣲ࣭࣮࣯࣭ࣳࣴࣵ࣬

Side3”

Top36”

Side3”

Front24”

Bottom12”

Back0.5”

Installation

10Page



Improperventingofthisappliancecanresultinexcessivelevelsofcarbonmonoxide

whichcanresultinseverepersonalinjuryordeath.

Wheninstallingtheventsystem,allapplicablenationalandlocalcodesmustbe

followed.Ifyouinstallthimbles,firestopsorotherprotectivedevicesandthey

penetrateanycombustibleornoncombustibleconstruction,besuretofollowall

applicablenationalandlocalcodes.



TH2DVINSTALLATION



TH2DV is equipped with a thermistor and hilimit switch for the exhaust gas, detecting excess

temperatures within the flue and enabling the unit to safely stop operations if needed. These

components are always monitoring exhaust gas conditions in order to prevent heat damage to PVC

(Plastic)ventingifPVCisused.

If the exhaust gas temperature exceeds 140°F, these components will enable the unit to safely stop

operations.  (For the TH2OS model, these components are not available since there’s no exhaust

ventingrequired.)



xTH2DVrequiresa4”makeupintakeairsupply

pipe.Theintakepipemustbesealedairtight.

xAir supply pipe can be made of ABS, PVC,

galvanized steel, corrugated stainless steel,

orCategorylll/IVstainlesssteel.

xSidewallventingisrecommendedfor

the TH2DV. Vertical venting (roof

termination)isacceptable.

xTAKAGI recommends running the

exhaust vent and the intake pipe as

parallelaspossible.

xTheTHPA01adaptorisusedtomake

theconnectionbetweentheTH2DV

vent collar and PVC vent pipe easier

andformaintenancepurposes.



VENTINGINSTRUCTIONS

General

TheTH2DVmustbeventedinaccordancewiththesection“VentingofEquipment"ofthelatestedition

of the National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the United States and/or Section 7 of the

CAN/CSA B159.1 Natural Gas and Propane Installation Code in Canada, as well as applicable local

buildingcodes.

TheuseofventingmaterialsapprovedforCategoryIII/IVappliancesisrecommendedwheneverpossible.

However,TH2DVmayalsobeventedwithplasticpipematerialssuchasPVC.Fordetails,pleaserefer

totheExhaustVent(PVCVent)sectiononp.11.VentinstallationsinCanadawhichutilizeplasticvent

systemsmustuseventingthatcomplieswithULCS636.

WARNING

Top12”

Side3”

Back0.5”

Side3”

Front4”

(24”Recommended

forMaintenance)

Bottom12”

Keeptheclearances.

Otros manuales para T?H2?DV

Este manual sirve para los siguientes modelos

Tabla de contenidos

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Takagi 710 ASME Manual de usuario

Takagi

Takagi JT-H2-DV Guía

Takagi

Takagi T-K1S Manual de usuario

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Takagi T-KJr2U-IN-N Manual de usuario

Takagi

Takagi T-H3J-DV Manual de usuario

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Takagi T-KJr2U-IN Manual de usuario

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Takagi MOBIUS Manual del propietario

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Takagi 110 Indoor Manual de usuario

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Takagi T-KJr Manual de usuario

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Takagi AT-M50 Manual de usuario

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Takagi T-KJr Manual de usuario

Takagi

Takagi T-KJr2U-IN Manual de usuario

Takagi

Takagi T-M50 Manual de usuario

Takagi

Takagi 160X3P Manual de usuario

Takagi

Takagi T-KJr2U-IN Manual de usuario

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Takagi T-KJr2U-IN Manual de usuario

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Takagi T-K2 Manual de usuario

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Takagi T - M1 Manual de usuario

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Takagi 140 Indoor Manual de usuario

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Takagi T-H3S-DV Manual de usuario

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Takagi T-M32 Manual de usuario

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Takagi T?KJr2?IN Manual de usuario

Takagi

Takagi T-K1 Manual de usuario

Takagi

Takagi AT-KJr3U-IN Manual de usuario

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