Gas tankless water heater tm suitable for potable water heating and space-heating* * please refer to local codes for space-heating compliance. Featuring • endlesshotwater • on-demandusage • compact,spacesaving • energyconservation • computerizedsafety • nopilotlight • satisfiesthe2012scaqmdrule 1146...
2 page contents installation manual specifications.......................................................................................................................... 4 introduction....................................................................................................................
3 page contents installation manual installation manual congratulations congratulationsandthankyouforchoosingourtanklesswaterheater. Beforeuse,werecommendthatyoureadthroughthissafetymanual carefully.Pleaserefertothebackofthemanualfordetailsaboutthe warranty.Keepthismanualforfuturereference. If you l...
4 page model 110u indoor (t-kjr2u-in) 110u outdoor (t-kjr2u-os) 310u indoor (t-k4u-in) 310u outdoor (t-k4u-os) 510u indoor (t-d2u-in) 510u outdoor (t-d2u-os) natural gas input (operatingrange) btu/h min.:15,000 max.:140,000 min.:15,000 max.:190,000 min.:15,000 max.:199,000 gas connection 3/4"npt wat...
5 page introduction • thismanualprovidesinformationnecessaryfortheinstallation,operation,andmaintenance ofthewaterheater. • themodeldescriptionislistedontheratingplatewhichisattachedtothefrontpanelofthe waterheater. • pleasereadallinstallationinstructionscompletelybeforeinstallingthisproduct. • ifyo...
6 page safety guidelines safety definition general 1. Followalllocalcodes,orintheabsenceoflocalcodes,followthemostrecenteditionofthenational fuelgascode:ansiz223.1/nfpa54intheusaorcan/csab149.1naturalgasinstallationcode incanada. 2. Properlygroundtheunitinaccordancewithalllocalcodesorintheabsenceofl...
7 page installation general 1. Followalllocalcodes,orintheabsenceoflocalcodes,followthemostrecenteditionofthenational fuelgascode:ansiz223.1/nfpa54intheusaorcan/csab149.1naturalgasinstallationcodein canada. 2. Allgaswaterheatersrequirecarefulandcorrectinstallationtoensuresafeandefficientoperation.Th...
8 page included accessories optional items • installation and service must be performed by a qualified installer (for example, a licensed plumber or gas fitter), otherwise the warranty will be void. • the installer (licensed professional) is responsible for the correct installation of the water heat...
9 page top black bottom side side front model top bottom front back sides 110uindoor(t-kjr2u-in)* 310uindoor(t-k4u-in)* 510uindoor(t-d2u-in)* 12in. (305mm) 12in. (305mm) 4in.** (102mm) 0.5in. (13mm) 2in. (51mm) 110uoutdoor(t-kjr2u-os) 310uoutdoor(t-k4u-os) 510uoutdoor(t-d2u-os) 36in. (914mm) 12in. (...
10 page installation installation manual 1. Backflow preventer: 9007678005 (tk-bf01) thebackflowpreventerpreventsthebackflowof air through the exhaust vent. This helps prevent harmfulexhaustgasesfromenteringthehome,as wellashelpingtopreventtheunitfromfreezingin areaswherecoldaircanbeblownordrawninto...
11 page warning for installations for your safety, read before installation: do not install the heater where water, debris or flammablevaporsmaygetintotheflueterminal. Thismaycausedamagetotheheaterandvoidthe warranty. Donothavetheventterminalpointingtoward anyopeningintoabuilding.Donotlocateyour hea...
12 page high-altitude installations check the elevation where your water heater is installed. Set dipswitches shown in the table below dependingonthealtitude. Dipswitches 110u (t-kjr2u) and 310u (t-k4u) models computer board warning do not adjust any dipswitches on the upper bank for the 510u (t-d2u...
13 page venting instructions for indoor models -general- thewaterheatermustbeventedinaccordancewiththesection“ventingofequipment"ofthelatest editionofthenationalfuelgascode:ansiz223.1/nfpa54intheunitedstatesand/orsection7ofthe can/csab149.1naturalgasinstallationcodeincanada,aswellasapplicablelocalbu...
14 page -vent length and no. Of elbow- thisisacategoryiiiapplianceandmustbeventedaccordingly.Theventsystemmustbesealedairtight. Allseamsandjointswithout gaskets mustbesealedwithhighheatresistantsiliconesealantorullisted aluminumadhesivetapehavingaminimumtemperatureratingof350°f(177°c).Forbestresults...
15 page -venting illustrations- for the 110u indoor (t-kjr2u-in), 310u indoor (t-k4u-in) and 510u indoor (t-d2u-in) models fordetailsoftheoptionalitems,refertotheinstallationmanualforeachoptionalitem. Horizontal installation diagram with direct-vent concentric termination wall direct-vent concentric...
16 page -vent termination clearances- canada u.S.A directventandother thandirectvent direct vent otherthan directvent a clearanceabovegrade,veranda,porch,deck,or balcony. 1foot 1foot 1foot b clearancetowindowordoorthatmaybeopened 3feet 1foot 4feetfrombelowor sideopening.1foot fromaboveopening. C cle...
17 page -for sidewall terminations- for multiple sidewall exhaust terminations (e.G. Multi- unitsystems),anexhaustterminationmustbeatleast1 ft. (305mm) away from another exhaust termination. An exhaustterminationmustalsobeatleast2ft.(610mm) awayfromaninsidecorner(iftheadjacentwallislessthan 2ft.(610...
18 page gas supply and gas pipe sizing -general- • theminimumandmaximuminletgaspressuresare: • gas pressure above this specified range for the water heater and/or insufficient gas volume will adverselyaffectperformance.Thesepressuresaremeasuredwhenthewaterheaterisinfulloperation. • inletgaspressurem...
19 page -natural gas supply piping- maximumdeliverycapacityofcubicfeetofgasperhourofipspipecarryingnaturalgaswith0.60specificgravity basedonpressuredropof0.5"w.C. Based on energy content of 1,000 btu/cubic ft.: the water heater requires 140 cubic ft./hr for the 110u (t-kjr2u) models, 190 cubic ft./h...
20 page -measuring inlet gas pressure- thewaterheatercannotperformproperlywithoutsufficientinletgaspressure.Belowareinstructionson howtochecktheinletgaspressure.This is only to be done by a licensed professional. Water connections allpipes,pipefittings,valvesandothercomponents,includingsolderingmate...
21 page -pressure relief valve- thewaterheaterhasahigh-temperatureshutoffswitchbuiltinasastandardsafetyfeature(calleda hi-limitswitch)thereforea“pressure only”reliefvalveisrequired. • thisunitdoesnotcomewithanapprovedpressurereliefvalve. • anapprovedpressurereliefvalvemustbeinstalledonthehotwaterout...
22 page temperature remote controller -included accessories- 1. Takeoffthe“back plate”fromtheremotecontrollerwithaflatheadscrewdriver.(fig. A and b) 2. Attachthe“back plate”onthewallwiththetwoprovidedscrews.(fig. B) installation installation manual • this remote controller is not waterproof donotins...
23 page 3. Tightenthetwo"fork terminals"beneaththetwo"remote controller terminal"screwson thebackofthemainbody.(fig. C-1) 4.Cutouttheinletfortheremotecontrollercablefromthebottomofthemainbody.(fig. C-2) 5. Placethe“main body”backonthe"back plate",withthe"remote controller cable"running outofthebotto...
24 page 5. Pulltheremote’swiresthroughtheholeatthebottomofthewaterheater’scasing. 6. Properlyattachtheremote’swirestotheremotecontrollerterminalonthecomputerboard. (nopolarity) * do not jump or short-circuit the wires or computer will be damaged. 7. Replacefrontcoversecurely. 8. Wiresusedfortheremot...
25 page easy-link system (available on the 510u (t-d2u) models only) the510u(t-d2u)modelswaterheaterscanbeconnectedwithotherallowableheaters(seethe tablebelow)withcommunicationcablestoworkasamultiple-unitmanifoldsystem. • theeasy-linksystemallowsupto4unitstomanifoldtogether. • acommunicationcable(gr...
26 page 2. Selectoneunittobethe“parent” unit. 3. “parent”unit locatethetwobanksofdipswitchesatthebottomleftofthecomputerboardoftheunitthatyou selecttobethe“parent”unit.Changedipswitchno.1ontheupper bank of dipswitches to the on position.Seethecomputerboarddiagramasshowninthenextpage.Donotchangeanydi...
27 page (c) examples of incorrect settings and /or connections case 1: wrong dipswitch setting on the "parent" unit case 2: wrong connections between the "parent" unit and the "child-1" unit • if you connect the “1" (or "2") connector of the “parent” unit to the “parent" (or "1") connectorofthe“chil...
28 page case 3: wrong connections between the "child-1" unit and the "chld-2" unit • if you connect the “parent” connector of the “child-1” unit to the “1” connector of the “child-2”unit,the “child-2”unitwilloperateasanindividualunit,andwillnotbepartofthe easy-linksystem. Case 4: remote controller c...
29 page multi-unit system multiple510u(t-d2u)modelscanbecombinedforamulti-unitsystem,alongwiththemulti unitcontroller(parts9007675005(tm-mc02))andremotecontroller(9008172005(tm-re40)). Each set of multi-unit controller and remote controller can control from 2 units to 20 units forcommercialorresiden...
30 page applications -space-heating applications- -recirculation- *the recirculation pump is to be controlled by: -dual-set aquastat (recommended w/timer) *the recirculation pump is to provide no less than 2 gpm (7.5 l/min) and no more than 4 gpm (15 l/min) through each activated unit in the system....
31 page -dual-purpose hot water heating- (domestic and space heating): diagrammaticlayoutofradiantheatinganddomesticwaterheaterpermass.Code. The recirculation pump is to provide no less than 2 gpm (7.5 l/min) and no more than 4 gpm (15 l/min) through each activated unit in the system. • priority con...
32 page initial operation installation installation manual if you smell gas: • donottrytostartthewaterheater. • donottouchanyelectricswitches;donotuseanyphoneinyourbuilding. • immediatelycallyourgassupplierfromaneighbor’sphone.Followthegas supplier’sinstructions. • ifyoucannotreachyourgassupplier,ca...
33 page owner's guide congratulations congratulationsandthankyouforchoosingourtanklesswaterheater. Beforeuse,werecommendthatyoureadthroughthissafetymanual carefully.Pleaserefertothebackofthemanualfordetailsaboutthe warranty.Keepthismanualforfuturereference. If you lose the manual, contact the manufa...
34 page operating safety for your safety read before operating a. Thiswaterheaterdoesnothaveapilot.Itisequippedwithanignitiondevicethatautomatically lightstheburner.Donottrytolighttheburnerbyhand. B. Beforeoperatingsmellallaroundthewaterheaterareaforevidenceofleakinggas.Besureto smellnexttothefloorb...
35 page danger vapors from flammable liquids will explode and catch fire causing death or severe burns. Donotuseorstoreflammableproductssuchasgasoline,solventsoradhesivesinthesameroom orareanearthewaterheater. Warning theoutlethotwatertemperatureofthewaterheaterisfactorysetat120°f(49°c). Usethisheat...
36 page normal operation owner's guide normal operation general remote controller theillustrationbelowshowsanexampleofthedisplay.Theexactdisplaymaydifferfromexamples. "hot" button "cold" button "on/off" button pressthe"hot"buttonorthe "cold"buttontosetthehot watertemperature. Whenthestandbyledison,t...
37 page temperature settings -set temperature- temperature table of remote controller normal operation owner's guide °f 100 105 110 115 120* 125 130 135 140 °c 38 40 43 45 50* 52 55 57 60 a) for 110u (t-kjr2u) and 310u (t-k4u) models °f 100 105 110 115 120* 125 130 135 140 145 150 155 160 165 175 18...
38 page additional features -information mode- youcangetsomeinformationaboutthewaterheaterconditionbypressingthe"info"button.Formore informationfollowtheproceduresbelow: -unit conversion mode- theremotecontrollerhasafunctionthatcanchangeunitsoftemperatureandflowratefrom"°f" to "°c" andviceversa,plea...
39 page temperature settings on the pcb (without remote controller) thereare2presettemperatures(120°f(49°c)and140°f(60°c))thatyoucanselectfrombychanging thedipswitchsettingsonthecomputerboardwithouttheremotecontroller.Seethetablebelow. Whentheremotecontrollerisnormaloperation,thesettemperatureofther...
40 page flow • thisunitcomesequippedwithheatingblockstoprotectitagainstdamagesassociatedwithfreezing. • forthisfreezeprotectionsystemtooperatetherehastobeelectricalpowertotheunit.Damagetothe heatexchangercausedbyfreezingtemperaturesduetopowerlossisnotcoveredunderthewarranty. Incaseswherepowerlossesc...
41 page maintenence and service • cleanthecold-waterinletfilter.(refertodiagrambelow.) • besurethatallopeningsforcombustionandventilationairarenotblocked. • theventingsystemshouldbecheckedannuallyforanyleaks,corrosion,blockagesordamage. • theburnershouldbecheckedannuallyfordust,lint,greaseordirt. • ...
42 page troubleshooting general problem solutions tempera ture and amount of ho t w ater ittakeslongtimeto gethotwateratthe fixtures. • the time it takes to deliver hot water from the water heater to your fixturesdependsonthelengthofpipingbetweenthetwo.Thelongerthe distanceorthebiggerthepipes,thelon...
43 page problem solutions w ater he ater unitdoesnotignite whenwatergoes throughtheunit. • istheflowrateover0.5gpm(1.9l/min)?(p.37) • checkforthefilteroncoldwaterinlet.(p.41) • checkforreverseconnectionandcrossconnection. • ifyouusetheremotecontroller,isthepowerbuttonturnedon? • checkiftheinlettempe...
44 page error codes -general- • theunitsareselfdiagnosticforsafetyandconveniencewhentroubleshooting. • if there is a problem with the installation or the unit, the error code will display on the remote controller. • consultwiththetableonthefollowingpageforthecauseofeacherrorcode. -single unit instal...
45 page -fault analysis of error codes- iftheerrorcodeisdisplayedonthecomputerboardofthewaterheaterorremotecontroller,please checkthefollowing.Afterchecking,consult with the manufacturer. Troubleshooting owner's guide remote green led malfunction description diagnosis 031 onetime incorrectdipswitch ...
46 page troubleshooting owner's guide remote green led malfunction description diagnosis 391 twotimes air-fuelratiorod failure • checkforconnection/breakageofwires(part#709) and/orsootontheafrrod.(part#108) 441 twotimes flowsensorfailure (easy-linksystem only) • check for connection/breakage of wire...
47 page troubleshooting owner's guide components diagram indoor models outdoor models case assembly temperature remote controller 721 001 004 052 003 052 007 002 051 050 052 005 704 002 001 702 704 006 717.
48 page troubleshooting owner's guide 510u (t-d2u) models 703 121 705 053 706 704 705 110u (t-kjr2u) and 310u (t-k4u) models 701 705 103 402 402 715 707 715 403 714 709 708 710 705 103 709 402 402 710 707 714 407 408 708 716 716 701 061 computer board assembly surge box assembly.
49 page components diagram owner's guide 113 114 150 057 119 151 118 055 401 401 153 154 053 152 713 056 107 106 108 060 109 111 712 112 052 101 711 712 401 116 116 115 110 053 053 062 060 122 117 053 060 060 104 105 123 708 710 718 718 117 719 052 055 053 054 102 120 709 714 063 707 103 062 720 exh...
50 page components diagram owner's guide water way assembly 463 413 453 451 403 456 460 458 462 450 414 459 454 402 460 456 461 458 404 415 407 454 405 457 406 410 455 408 456 454 460 409 c 452 411 414 451 414 412 058 401 b a b a d 052 059 d c bypass section (510u (t-d2u)models) 510u (t-d2u) models ...
51 page components diagram owner's guide parts list item # description part # 110u, 310u and 510u models t-kjr2u, t-k4u and t-d2u models 001 caseassemblyforindoormodels foroutdoormodels 319143-428 319143-429 ek103 ek111 002 frontcoverfor110uand310uindoor(t-kjr2u-inandt-k4u-in) for110uand310uoutdoor(...
52 page parts list owner's guide item # description part # 110u, 310u and 510u models t-kjr2u, t-k4u and t-d2u models 120 121 122 123 igniterplate surgeboxplate gasket gasket 319143-051 319143-176 319143-456 319143-457 ekk1b ek436 ek127 ek145 150 151 152 153 154 o-ringp18nbr(black) o-ringp20nbr(blac...
53 page parts list owner's guide item # description part # 110u, 310u and 510u models t-kjr2u, t-k4u and t-d2u models 701 computerboardfor110u(t-kjr2u)models for310u(t-k4u)models for510u(t-d2u)models 319143-469 319143-470 319143-471 ekj6v ek106 ek149 702 703 704 rubbergrommetforindoormodels surgebox...
54 page output temperature chart chartisbasedonproperlysizesgasline 110u (t-kjr2u) models output temperature chart owner's guide 310u (t-k4u) models *whenthesettemperatureis131°f(55 °c)orhigher,maximumflowrateislimitedto8.0gpm. 510u (t-d2u) models output temperature vs. Gpm (max. 6.6 gpm) with vario...
55 page 1. Generaltermsoflimitedwarranty: thislimitedwarrantygivesyouspecificlegalrights,andyoumayalsohaveotherrightswhichvaryfromstateto state.Themanufacturerwillhonorthewarrantytotheoriginalretailbuyerattheoriginallocationonly,anditis nottransferable. This warranty covers only failed mechanical an...
56 page (3)limitedlaborcoverage •themanufacturerwillprovideforreasonablelaborchargesassociatedwithwarrantyrepairs orreplacementswithinone(1)yearfromthedateofpurchase.Themanufacturerwillonlypay directlytotheserviceprovider. •warrantyservicemustbeperformedbyanauthorizedservicerepresentative.Alistofaut...