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avertissement - AO Smith Water Heaters

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24. Applies to models with powered anode option 56 Blower Prover Failure Fault occurred 2 mins ago The blower prover switch is closed out of sequence Call a service professional Your Company Name digi press DOWN for more Blower Prover Open Fault occurred 2 mins ago The blower prover switch remains open after the blower has been energized Call a service professional Your Company Name Ge press DOWN for more Blocked Air Intake Fault occurred 2 mins ago The combustion air intake is restricted Call a service professional Your Company Name 7 press DOWN for more BACK 0 Energy Cut Out ECO Fault occurred 2 mins ago Tank temperature is excessive The vvater heater has been disabled Call a service professional Your Company Name ge press DOWN for more BACK 2 Alert No Anode Voltage Alert occurred 2 mins ago No voltage detected from Powered Anode s Call a service professional Your Company Name press DOWN for more BACK WIRING DIAGRAM A CAUTION LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION VERIFY PROPER OPERATION AFTER SERVICING Blower EO 1 White Brown Spar Speedf back gt White Orange WIRE BIOWR E Module E ooo 2 White Blue SI PWM Signal Neutral WW signa AL 4 Whte Blue
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27. 38 User Settings amp Control System 5 2222 41 FOR YOUR INFORMATION 46 Start Up Conditions 46 Operalional Conditions uU ULU uu LLL uuu Aaz ee utes 46 PERIODIC MAINTENANCE 47 Venting System nspection 47 Anode Rod INSPECTION 47 Powered Anode Rod optional models 48 Temperature Pressure Relief Valve Test 48 Draining and Tusbung 48 5010 PT 49 LEAKAGE CHECKPOINTS E 50 IR ELE Hi E 51 Installation Checklist 51 Sequence Of Operation 51 Sequence Of Operation Flow Chart 52 Operational Problems 53 Fault And Alert Conditions 54 WIRING DIACGRAM a aa a 57 NOTE 58 LIMITED WARRANTY 59 SAFE INSTALLATION USE AND SERVICE The proper installation use and servicing of this water h
28. AIR IN HOT WATER FAUCETS A WARNING Flammable hydrogen gases may be present Keep all ignition sources away from faucet when turning on hot water HYDROGEN GAS Hydrogen gas can be produced in a hot water system that has not been used for a long period of time generally two weeks or more Hydrogen gas is extremely flammable and explosive To prevent the possibility of injury under these conditions we recommend the hot water faucet located farthest away be opened for several minutes before any electrical appliances which are connected to the hot water system are used such as a dishwasher or washing machine If hydrogen gas is present there will probably be an unusual sound similar to air escaping through the pipe as the hot water faucet is opened There must be no smoking or open flame near the faucet at the time it is open PERIODIC MAINTENANCE VENTING SYSTEM INSPECTION A WARNING Flue gases may escape if vent pipe is not connected Be alert for obstructed sooted or deteriorated vent system to avoid serious injury or death Do not store corrosive chemicals in vicinity of water heater Chemical corrosion of flue and vent system can cause serious injury or death Analyze the entire vent system to make sure that condensate will not become trapped in a section of vent pipe and therefore reduce the open cross sectional area of the vent Breathing carbon monoxide can cause brain damage or death A
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38. Slide the wall plate over pipe to stop against air intake terminal Place a bead of caulking not supplied around the gap between the pipe and the wall Place some of the caulking on the back of the plate to hold it against the wall after installation Ifthe air intake pipe is installed up to the wall with a coupling on the end againstthe wall opening the pipe with the air intake terminal can be prepared for gluing before inserting through the wall Slide the pipe through the wall and insert into coupling on the other side of the wall making sure thatthe air intake terminal ends up pointed in the correct position Figure 14A and Figure 15 MORTAR OR METAL PLATES SILICONE 2 CAULK EXHAUST VENT TERMINAL WITH SCREEN FROM WATER HEATER OUTSIDE PVC BUILDING COUPLING WALL EXHAUST VENT TERMINAL ALL MODELS MORTAR OR METAL PLATES SILICONE CAULK AIR INTAKE TERMINAL WITH SCREEN HEATER OUTSIDE jm 4 cM BUILDING 30 5CM WALL MINIMUM PVC COUPLING l AIR INTAKE TERMINAL ALL MODELS Figure 15 TERMINATION CLEARANCES SIDEWALL POWER VENT POWER VENT using room air for combustion EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION IXED OPERABLE CLOSED V VENT TERMINAL AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED NN Figure 16 Vent terminal clearances for Power Vent installations Power Vent configurations use room air for combustion CANADIAN INSTALLATIONS
39. control system monitors the flame sensor Water is heated to 24 V Gas Valve set point de energized 24 V Gas Valve 60 second de energized Inter Purge cycle 60 second Retries up to Post Purge cycle P two more times Control System Locks Out Ignition Failure Fault Msg is displayed Water heater goes into standby mode Figure 40 52 OPERATIONAL PROBLEMS AA WARNING Read and understand this instruction manual and the safety messages herein before installing operating or servicing this water heater Failure to follow these instructions and safety messages could result in death or serious injury This manual must remain with the water heater This section of the manual is intended to be an aid in correcting common operational problems it is not all inclusive The installer may be able to observe and correct certain problems which might arise when the water heater is first put into operation or when it is re fired after a prolonged shutdown However only qualified service technician should perform any service procedures on the water heater NOTE Call the technical support phone number listed on the back cover of this manual for further technical assistance or to locate a qualified service technician in your area ROUGH STARTING ROUGH OPERATION A WARNING Fire and Explosion Hazard e Do not use water heater with any gas other than the gas shown on the rating plate Excessive
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44. wiii verica orizontal or dire vent venting systems Toxic chemicals such as used for boiler See instruction manual for vent instructions treatment shall not be introduced into potable water heater used for space heating This water heater meets or exceeds the For installation on combustible flooring in a X current edition of ASHFAE IES 90 1 closet with the following clearances Minimum clearances from combustible or Tapers DERE ee non combustible construction O inch Ocm death from scalde x sides O inch Ocm back 1 inch 2 54cm top and 4 0 inches 1 0 1 6cm front Children disabled and elderly are at higher risk of being scalded A clearance of 24 from serviceable parts is H See instruction manual before recommended for maintenance setting temperature at water heater Feel water before bathing or showering Temperature limiting valves are available see manual 36 TEMPERATURE REGULATION It is recommended that lower water temperatures be used to avoid the risk of scalding It is further recommended in all cases that the water temperatures be set for the lowest temperature which satisfies your hot water needs This will also provide the most energy efficient operation of the water heater Water temperature over 125 F 52 C can cause severe burns instantly resulting in severe injury or death Children the elderly and the physically or mentally disabled are at highest
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48. Verify the power to the water heater is turned off before performing any service procedures A WARNING Read and understand this instruction manual and the safety messages herein before installing operating or servicing this water heater Failure to follow these instructions and safety messages could result in death or serious injury This manual must remain with the water heater Water temperature over 125 F 52 C can cause severe burns instantly resulting in severe injury or death Children the elderly and the physically or mentally disabled are at highest risk for scald injury A DANGER Feel water before bathing or showering Temperature limiting devices such as mixing valves must be installed when required by codes and to ensure safe temperatures at fixtures AWARNING Explosion Hazard e Overheated water can cause water tank explosion e Properly sized temperature and pressure relief valve must be installed in the opening provided CAUTION Improper installation use and service may result in property damage Do not operate water heater if flood damaged Inspect anode rods regularly replace if damaged Install in location with drainage Fill tank with water before operation Properly sized thermal expansion tanks are required on all closed water systems Refer to this manual for installation and service GENERAL SAFETY INFORMATION A WARNING Before servicing the water heater
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56. 1 Install the vent terminal by using the cover plate as a template to mark the hole for the vent pipe to pass through the wall BEWARE OF CONCEALED WIRING AND PIPING INSIDE THE WALL 2 Ifthe Vent Terminal is being installed on the outside of a finished wall it may be easier to mark both the inside and outside wall Align the holes by drilling a hole through the center of the template from the inside through to the outside The template can now be positioned on the outside wall using the drilled hole as a centering point for the template 3 A MASONRY SIDE WALLS Chisel an opening approximately one half inch 1 3 cm larger than the marked circle B WOODEN SIDE WALLS Drill a pilot hole approximately one quarter inch 0 64 cm outside of the marked circle This pilot hole is used as a starting point for a saws all or sabre saw blade Cut around the marked circle staying approximately one quarter inch 0 64 cm outside of the line This will allow the vent to easily slide through the opening The resulting gap will be covered up by the Vent Terminal cover plate Repeat this step on inside wall if necessary Cut a length of pipe about 3 5 inches 8 9 cm longer than the wall thickness at the opening Glue the vent terminal to this section of pipe Slide the wall plate over the pipe to stop against the vent terminal Place a bead of caulking not supplied around the gap between the pipe and cover plate Apply enough to fill some of the
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63. codes or in the absence of local codes with the National Electrical Code ANSI NFPA 70 or the Canadian Electrical Code CSA C22 1 POWER FLUCTUATIONS AND ELECTRICAL NOISE The water heater s control system requires a source of stable clean electricity for proper operation Connecting the water heater to a branch circuit that is subject to fluctuations in voltage level or electrical line noise such as EMI electro magnetic interference or RFI radio frequency interference may cause erratic control system operation and malfunction A high quality power supply filter suppressor must be installed if the above conditions exist Call the technical support phone number listed on the back cover of this manual for more information NOTE Malfunctions caused by the power supply and the costs to install power supply filters are not covered under the limited warranty DEDICATED POWER WIRING AND BREAKERS Dedicated power supply wires ground wiring and dedicated circuit breakers often prevent electrical line noise and should be considered when installing the water heater MIXING VALVES Water temperature over 125 F 52 C can cause severe burns instantly resulting in severe injury or death Children the elderly and the physically or mentally disabled are at highest risk for scald injury A DANGER Feel water before bathing or showering Temperature limiting devices such as mixing valves must be installed when required by codes
64. ejno ep l uoue S HH A P eueine ni e 1e ne uneu np yos ep 1e e eujeuued 1002 1uejsuoo jueuie nooe un uu lqo e nbsn sajnoo nee 5187 euooud sn d epneuo neo p jeuiqo4 l 1ueJAno ue OS op 1e e IIOAJ S 1 np 1ejduuoo eDessijduie1 np 1eJnsse s Jnog G9IAJ8S UO 1s neo ojjneuo enbsJo J91S9J yop epioj neo ue uomnejueul e p 190140 9 J3rn oHVIN3H ne ineuo ne nee ue uonejueul e p jeulqoJ l IANO Z nee ejneuo np JUBA 9109 l 115 S oDuepiA 1euiqoiJ 97 eJre1ou sues ejoup e se uBiod p jueuano ue nee ejgneuo np eDuepiA ep 1jeuiqoJ l nee p nea ejjneuo eJ dwa nog nee ojyneuo ne 286 9 jeuin e p jueAe epneuo nea p 1901 01 np s lno s Op nea nee p due OP 10 ne s ewwop sep JiuaAeid noq neap dw 1494 sed jse js nee ejneuo Jjeuuonouo sewel N Jeuuornouo Bile ep zuene nee p JIOAJesoi 9 JjduloM nee ejneuo ne seBeuiuop S NOI LN3LLV 344 NG 3SVSSITdIN3qdi suomneoridde s Jnod 1ueujedinbo ep jueujeuuorsueuJip o Jed n yop 1e enuiup jueuje e6o is nee ejyneuo np emos 1iq p e sepninje sejneu ep e enbijuoj eo np uononpoai e ep uosieJ UZ T u g ue neue e INOd 9 eoo ouqnd eoriues no 266 ep siube
65. low volume of supply gas Low Gas Pressure See the list of possible causes and things to check and repair for the Ignition Failure Fault message Clogged blocked intake air screen s Clogged blocked Main Burner NOT ENOUGH OR NO HOT WATER No power to the water heater check breaker fuses and the water heating Enable Disable on off switch Hot water supply valve s to fixtures closed Operating Set Point is set too low Differential setting is set too high Temperature Probe Offset setting are causing the heating cycles to terminate prematurely The heating capacity of the water heater has been exceeded the water heater is unable to meet demand Colder incoming water temperature lengthening the time required to heat water to desired temperature Hot water piping leaks open faucets water heater drain valve leaking or open Sediment or lime scale accumulation may be affecting water heater operation WATER IS TOO HOT Operating Set Point is set too high Temperature Probe Offset settings improperly set NOISY OPERATION e Normal operating noise of electrical components Combustion Blower transformer hum relay contact closure REPLACEMENT PARTS Replacement parts may be ordered from the manufacturer authorized service agencies or distributors When ordering parts be sure to have the complete water heater Model Number Serial Number and Series Number available This informati
66. make sure the blower assembly is unplugged or the electrical supply to the water heater is tumed OFF Label all wires prior to disconnection when servicing controls Wiring error can cause improper and dangerous operation Verify proper operation after servicing Failure to do this could result in death serious bodily injury or property damage A WARNING A DANGER Breathing Hazard Carbon Monoxide Gas e Install vent system in accordance with codes s Do not operate water heater if flood damaged e Special Consideration must be taken with installations above 10 100 3 078m for standard models e Do not operate if soot buildup is present Do not obstruct water heater air intake with insulating jacket Flammable Vapors Do not place chemical vapor emitting products near water heater G 50 ide detect ilabl Avapors from flammable Water heater has a main Gas and carbon monoxide detectors are available liquids may explode and burner and ignition device No vent damper installation is compatible with catch fire causing death The ignition device this power vented water heater or severe burns Do not elevate the condensate hose on the bottom 1 can come on at any time and of the water heater above the bracket attached to 2 will ignite flammable vapors the side of the unit This must be true for the entire Do not use or store flammable length of the hose including the exit into an products such as gasoline
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68. operation Verify proper operation after servicing Failure to follow these instructions can result in personal injury or death The following section Fault And Alert Messages lists some of the messages the control system will display on the LCD when there are operational problems This is not a complete list Along with each of the Fault and Alert messages described there will be a list of possible causes and things to check and repair 54 Only qualified service technician as defined in Qualifications using appropriate test equipment should perform any service procedures on the water heater NOTE If you are not qualified and licensed or certified as required by the authority having jurisdiction to perform a given task do not attempt to perform any of the diagnostic or service procedures described in the following section If you do not understand the instructions in the following section do not attempt to perform any procedures Call the technical support phone number listed on the back cover of this manual for further technical assistance or to locate a qualified service technician in your area A WARNING Jumping out control circuits or components can result in property damage personal injury or death e Service should only be performed by a qualified service agent using proper test equipment e Altering the water heater controls and or wiring in any way could result in permanent damage to the controls or water
69. qe B 1 uou s j uuoi eu_ do suomneuuojui sep uanuos nuaw nuaw suep INOd lt H3NNOILO3 13S gt snos jeuuorejedo uoinoq a nusj np 1neH ins JaAndde jedrouud nueyy np sed e eDeyneuo 1e13 Jeuuor e es 1 NOILOV NOILdlH2OS3G niV3i 344nVH9 NG 1V13 nu l nip eDejDeu l 19 jueujeuuomouo ep euDisuoo ep 1104 e nod 199p Iesel In e s lsn e 1405 say jueuieuuomouo op 1104 jueule qeJopisuOo opneuo nee ue e IS enb sosi nn n JUSAIOP OU JI0AJ8S9J np epuos e sefe eoop se 3n 0HVIW3H eBejeoop eauqi eo eunyeaeduuo e ep uouo ue soAnoesop no soAnoe uawas eDejneuo s pAo s 7 epuos ej ped e 1 581 p eunjeJoduuie e lt 1reJe eoop gt no jrejeJqi eo epueuuuloo euleis s l s 0 enb enne eun e lsn e is puos n anod oDe eoop e enb 4 0ZL 9p 1se puos oun D ed e ejueJnoo gt IS 0 2 uawan ewd eGejneuo xne ul se qudeosns 19 op 10M S91 l SIDA epneuo neo ueuuneq np s y noq Sol 1 00 1 1 n jueuje eBo 1n
70. sosodeJjue no sjuesaJd lu uu qissod 1005 sunedeA s q uuuup ju s p nb l s p no siloipu sep suep nee oejneuo o Jooe d sed N pz eDed e e JUBSUBWWOD UOHE U A seuod ep 1e saJjguaJ op 990 no ejuixoJd e sjoJpue S 1nj oui 1992 suosreuiuuoe sop ne Alu ne jInJq np uOSIeJ ue se qeJisopur 1491 6 Jie p 1lu p suosieululJe sep no uonenoeAo9 UOHE U A e ep ejuenbesqns uome e1sur no syioJpue sep suep nee ojjneuo l 1e2e d sed N LL Sojuooefpe s uoz S suep e qeJisopur ejes ewou jueujeuuornouo l juepued uonsnquioo ep n l i u A l nb uInuq 9 no siloipu s p suep nee oajijneuo l 192e d sedan pz eDed e E UORE U N JIOA sesiuued unuuxeul sin nBuo j s p s liu l S suep 1uoJejsa 4 so eisu uos ei puenb 19 uone nuaA ep xne n s no nee ajneuo l JANIS 6 G eBed ej e UORE U A 1e uonsnquioo JI V JIOA UOHE U A 1e uornsnquaoo JNO sie le ue eyenbope uonejueul e eun uu lqo ined uo no nee oeygneuo 9 NUS 78 seouefixe 1nod g eGed e e uonejueull y BO A 021 ep uoneiueuuje eun p oiuiixojd e nee ejneuo 9 anys nea ajjneuo np yediouud e6esn p np said ne yneyo l q ba 9 uonsnquuJoo ep JIe p q p Jejuui sed Op eu 080 nee ejneuo np q uicip e nb end ep od z WO 1 G SUIOWW ne p aJjeuueip un Jnopuojoud od Z WO G SUIOUJ
71. ve ounDiJ uonejnuunooe no 9juag od Z1 uo Gog UliN AE UOHE U A UOSIEUIUL L quojdins Sf ne nbsn 4 od z 906 E l pneuo K onenian ep neAn uoixeuuoo eq e1eipneuo AED uoixeuuoo SIN ounBiJ UOHE U A p uouonoq UOHE M A e op eseg Je p xne n enbuueouoo UOHE RU A op uosieuiuJe ep suoixeuuoo xn 1u uu9 931409 SO9pJ0299J Laos UOHE U A ep je uonsnquioo ep up xneAni s nb Jeunsse s inod eDejneuo ep e o o un 1uepued j1euuornouo ANEJ sj nuelsqns s j uu eu seDeuuuop sap no yow e 8 s j iodio5 s inss lq ep lilIq ssod e 1 449 p Ue jnejneu eulgul e e S JUBAION 11E p seoJjue 1e uorme nueA ep xne ni s l snol OAd l e qneduioo syeyouess p un juesi n ue jneuogjui ep H 1uoJ ep JNW np suoneJigued se ueiq uoinejnueA ep xNeAn s 1e uosieuiuJe e SIO oun S8IUJn0 SIA S 1UES D ue eseq e e uouonog l H SS AN ueqeD wwoos eseq e 1uesi inn ue eDejoue p non 9 JeJedeu seDejoue s l inod l d one puojoud ep od 91 1 uiu oe ep od 91 uuu ep non un siunoj soDeJoue S 18 SIA Sol Jesi nn nu ne eseq EI Nod U109 2UIX VAMMA ne e qiuodsip 159 inb 929 X4di euieis S np UOUEIIEISULD aping suep 5 11 0 1UeAJOS 994e Ss
72. yue lt 31vadn O q l V Jenjoe l 1 seq 9 5 189 1neu l 9 5401 00 S Joer 34 07 1 104195 OU ue JNOJUOD un e sou eDessijduiaJ un p eyeBueuo uogas e oAnoe seJnjejeduie 1ueujeuuonouo ep eufisuoo 1100 inod ep l 20 JONVHO ou enfBuo snid eun ue uuouoo snid l jueuieuuornouo l sanofnoj euiuuno 1292 e qejdeooe epneuo neo ue uonejueuuie eun zulo seq snid ne jueujeuuonouo op euDisuoo 1uiod e 19 694 sjeuuormeJjoedo sino s eunsn juejueuu6ne euneuedns ainyesodwe ep sasawesed 591 FNOYUVINAY JOSHO 9qoJg XUEL hnueuJ ep epueuJuJoo yue 91192 Jeuuoroejes nod seq l 5 1e n u l SJeA suolnoq S Jesi nn euuonoejes sed 1se u jueujeuuorouo ep euDisuoo ep luloq nueui l IS JEHUSJOWIG ep epueuuuloo y 1nod e jnod lt FONWHD gt snos JeuuoneJjodo uolnoq l INS Je ndde sejunyejeduje nu w 9 suep 1 2 seJnjeJedue juouueuuonouo eufisuoo ulod oJ lt luloq 18S Buneuedo gt Oe epueululoo 9439 Jeuuoroo es Jnod seq l S19A 19 1neu l SJ9A ney JUSIIND suolnoq s l Joen euuorjoojos sed 1so u nuaw l IS
73. 1 eujuioo si i n n sed pop eu nee ajyneuo OCH xneool ep ep suoneoijdde s p suep 1ueujenbiun asijiin n sed n d eu nee oyneuo 92 eDeyneuo ep ui ls s ep d eine no ie ep jueuJojie4 eJedde osne s ip dx sjanueW S no ol ong op 99 SOIAINS JUBAIOP snossep io seanbipui suomnonjisur s eJloq anod lqelod nee ep un nb xneoo sep eDejneuo un u lq ISSN JIUINOJ inod esi nn n hop nee ajneuo IS 0L 1 JIOA xneoo ep suoneojdde suep sillin n Anod llios oep eo4jue p suoixeuuoo ep Iunui 1s nea ojjneuo 9J10A 3 18V LOd nV3 d AINALSAS 13 XNVOOT 530 ADVAANVHO 0S np od 9 up S no euooiis ep seq e ll uSuel p 1uoDe unp apie e OS ne 9j eos eJie yop nee ejneuo np seq l ASN S 9UJON UOUEIEISUuLD seoueBixe xne eujojuoo Jnog eduiod eun p uormneJidse p ejnpuoo e Ins 1lu uu BueJ 1ed 1iq p 1e n69J srewel N eduiod e alos 9109 l INS ep ejnpuoo e Supp lleisul eDessed e og e 1edej o l 1ueuiejBuegia 1ed 1uejn6o4 ue 1iq p e Joo e 8SSsieA o e np 1ueujeuuorisiAOJQde p juiod ne 4 081 gt 28 e nee eun JiusNo inod ajuesiins lsn H HOP uoge noJo 67 Lk 081 O 28 nee p uomge nour eun 1 epueujuooS J uonepuno4 uonejues jJ
74. 1 1ueujeAnoedsei UOITENDEAY P UORE RU A e 1e 1e p 991 U9 nod ne nj ep id Z id Z w VZ 1e w 1970 snid 06 ep epnoo un 1se nen ep 1nessoJ6 enbeuo nod uome nuoeA ep in nB6uo e Sy 609 zy SLL 50 GLL S0 SE S 99 01 021 S 9 Ov 6121 id ul Wnwixew od e neAnL id u Wnwixew od z ne nj 006 s pno lquloN Z 418 1 Z lQEL ej suep nbipui nb q ep sjue eainbo sp id ue ne uueo 266 sep i llu A ep ejqedeo s nee ejneuo e s pno5 1e uome nueaA ep xne n1 ep uunuuuiuui UN Jesi nn e nos UOHE U A ep xne n ep neesaJ np uonejue duuipp uejd un aed UOHEHMU A np nagid jueujeoe duie e nbsn uonenoeAo p epnoo np Jed e uonejnuaA ep xne ni ep np oiotelen e Jo l NOLLV ILLN3A 30 XNVANL 40 nv3saa na NOILVOIEINV Td xneoo sepoo xne nb Isule sec fEUONEN ne 1e nv4 4441VHO NA NOILVTIVLSNI 19 1ueujeoe duie jueujeouoo uorneJlopisuo ue e SIE I uonoes e suep suep enuoejuoo uoneuuojul e 51 H JUBAIOP soej qusnquioo seJgneul xne oddeu sed sinbei S U A D sp1029eJ sop 1uejo euluoo uononjjssuoo ep sepoo S Jed souisse p juos 99910 UOHE U A e nee ajjneuo So Jnod seen uone nueA ep xne n seq eDe qeo euequiojd neoAu ne snuej
75. 1nejop Jed s p uormeunejsaiJ e ep sio seoDueuo Syd euisn ep 1 INOS JN 968euoure p ep s u l l id se euisn p 1nejop Jed sejjeurejed xne epueuluioo ep eulais s Jed sejeueJed jeJnejsou np sn res ln p seJi1guueJed saj JeJnejsoJ ep in resilin i e 3euued epueuluioo ep euigis s np uornouo 91192 syinejeg Ajojoe4 5 1se ne uneu 9 Anod seoue iejop sep enbuoisiu INS uoeuuojur ueneJjue un p sio eoejduiaJ 1S9 400 T IS INOYUVINAY ueuuiujopur GOD 10 e suep 5 s ejnpoud 1se s eouejejop e no SIO ep e1quiou 97 ne jjneuo np e eniur uonejersur sindep eynpoJd 1s s eoueunooo ooue eJop ep uonipuoo eun no SIO eJquiou np ueno 610 l Lag epueululoo ep euigis s np nuauJ 97 Su umnooo WE sanof og seJde 1S seoue ejop sep enbuoisiu ep eJioueui e ueioue SNjd l ejeoejduueJ 106284 SNid l jueujeuaA9 anejepoJou un 994e seoue ejep ep enbuoisiH oueJ e p 1e eoue iejop ep seDesseui sJeiuJep 6 in u sep eisi eun Late euigis s ep NUBW a ois 1ine i 1ueJnoo ep eoue ejo lenjoe eouej ejop ep no euej e p eGesseui 1no euoiv ney ua uno oDeyneuo nu ui suep Jeuoije s jueAned q22 19 WIN 1810160 ep suoisi 9J S enb isure 50 e e6ejjneuo l Ans uoneuuoliu 9 beunev ep soeJ o o ep lduuoo 110
76. 2V Iw pexoolg I suoneuloju sop lu n uo5 nu w ac nu w eo suep n unod Ieuuonog as lt 2 gt snos JeuuoneJjedo uoinoq ins saAndde qedioulid n yy np ped e seouej iejop ep enbuoijsiH 1euuonoos os AJO SIH 3ne J S3ONVTIIV33G 20 3n 0IHOLSIH Jediouud nueui l Supp 1ueJnoo ep eoueJ iejo e ue ejeuoie s 1 lt euou gt uomeuuojui eunone eJjpuaiuoo Q3ONVAGV 8 ou 92 eue v p NO eouel jejeq ep uonpuoo ep sed e u ILS 40 NAMOQ seed eue v p no eoue iejoq ep uonipuoo EI ep sajqissod H H weN Auedwos Jno s sne s p 191 eun jo ep suomneuuojur sejduie Snid ep eeuuop euoissejoJd ausge e UE 150757 lt QHONVAGV gt snos jeuuonejedo uoinoq ins je nddy ep snossep ue euoie s H ly D no eouejejeq ep uonipuoo e osneo e ep uonduosep A91q un snossep ue jueulajoagJip 5 s esou n l no e eue v p no eoue nejeq eDesseu l ejjenbe e ano 9Jnsu pejoulseJ eue v p no eoue iejeq ep npe eDesseu e juenuoo nueul oC JO p yoolq 51 jsneuxe eu NUSW l 5 Janbiaeu inod seq 5 19 INeY 9 9 suoinog S Jesi n s qe 6 1 sneEux i pe xoolg uou se jeuuoneJedo SUOITELWWJOJUI sep 1u nuo NUBW e nu ui suep inod 1199 99 O23138 gt snos Jeuuonea48do uolnoq ins Je
77. 3 8 Significant sections of the support wire approx 1 3 or more of the anode rode length are visible If the anode rod show signs of either or both it should be replaced NOTE Whether re installing or replacing the anode rod check for any leaks and immediately correct if found In replacing the anode 1 Turn off gas supply to the water heater 2 Shut off the water supply and open a nearby hot water faucet to depressurize the water tank 3 Drain approximately 5 gallons of water from tank Refer to Draining and Flushing for proper procedures Close drain valve 4 Remove old anode rod 5 Use Teflon tape or approved pipe sealant on threads and install new anode rod 6 Turn on water supply and open nearby hot water faucet to purge air from water system Check for any leaks and immediately correct any if found Restart the water heater as directed Anode Rod Depletion ei d AN Pitted Anode Rod Exposed Support Wire Figure 37 POWERED ANODE ROD OPTIONAL MODELS To insure a long trouble free operating life certain models of water heaters covered in this manual are factory equipped with a powered anode system The anode rod is of a permanent design and does not need replacing unless damaged Inspection and cleaning should be performed once a year NOTE Follow the instructions to drain the water heater storage tank first Remove the powered anodes from the water heater by loosening the
78. 60 cm ABOVE ANY PARAPET VERTICAL WALL OR STRUCTURE WITHIN 10 FEET 3 m HORIZONTALLY OOOOQOO VERTICAL TERMINATION S FLAT ROOF CLEARANCE INTAKE AIRAND OR VENT EXHAUST Figure 20 DIRECT VENT DIAGRAM EXHAUST ROOF VENT CONCENTRIC VENT INTAKE m 6 MINIMUM 12 MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL Figure 22 SIDEWALL VENT 24 MINIMUM SEPARATION EXHAUST IMPORTANT INTAKE LEG MUST BE AT SAME LEVEL OR ABOVE MUST BE FACING UP GT MINIMUM INTAKE TERMINAL i 1 MAXIMUM CONCENTRIC VENT 12 MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE 12 MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE TO DRAIN Figure 23 Figure 24 31 CONCENTRIC VENT INSTALLATION This water heater is certified for concentric venting with concentric vent kit 9006328005 Follow instructions below for proper installations Table 8 KIT COMPONENTS Item Qty Rain Cap SDR 26 pipe SDR 26 pipe Y Concentric Fitting Installation Instructions 196151 Field supplied pipe and fittings are required to complete the installation This concentric vent termination kit may be used with 3 inch diameter pipe systems SAFETY CONSIDERATIONS Installing and servicing water heating equipment can be hazardous due to gas and electrical components Installation and service of the concentric vent termination requires ability equivalent to that of a qualifie
79. E Do not apply insulation to the top of the water heater as this will interfere with safe operation of the blower assembly Fire or Explosion Hazard Do not cover the control system LCD on top of the water heater Read instruction manual before installing e Do not cover the outer door thermostat or temperature amp pressure using or servicing water heater relief valve Improper use may result in fire or Do not cover the instruction manual Keep it on the side of the explosion water heater or nearby for future reference e Do obtain new warning and instruction labels from the manufacturer for placement on the blanket directly over the existing labels Do inspect the insulation blanket frequently to make certain it does not sag thereby obstructing combustion air flow e Maintain required clearances to combustibles Minimum clearances between the water heater and combustible construction are O inch at the sides and rear 5 5 14 0 cm from COMBUSTION AIR AND VENTILATION the front and 18 45 7 cm from the top Standard clearance If clearances stated on the heater differ from standard clearances install A gas water heater cannot operate properly without the correct water heater according to clearances stated on the heater amount of air for combustion Do not install in a confined area such as a closet unless you provide air as shown in the Facts to Consider About Location section Never obstruct the f
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81. Gas Type wa o o me lt s z vue o o oo s All models Maximum Supply Pressure 14 inches W C 3 48kPa Minimum Supply Pressure for Natural Gas 3 50 87kPa Minimum Supply Pressure for Propane Gas 8 00 1 99kPa Minimum pressure must be maintained under both load and no load dynamic and static conditions Table 3 RECOVERY CAPACITIES Rating Rating Temp Btu hr kW Rise 387 1465 Las 5 s e e wo mo mom wo eee ee 000 293 ien ues voz saz v s 628 s s s s 29 Recovery capacity based on 96 thermal efficiency FEATURES AND COMPONENTS 50 GALLON UNIT 12 11 ACCESS PANEL ACCESS Caution This access panel covers 19 ES a 2 NPT plug that was required during the manufacturing of this water heater This 2 NPT flange is nota cleanout fitting removing the 2 NPT plug and using this fitting as a cleanout could void your warranty 26 27 34 SEE ACCESS PANEL CAUTION 28 INSTALL THERMAL EXPANSION INSTALL PER TANK IF WATER HEATER IS LOCAL CODES INSTALLED IN A CLOSED WATER SYSTEM CAUTION HARNESS HAS 120 VAC IN OPERATION See Planning the Vent System Installation of Vent System and Condensate Piping for more information Figure 1B 50 GALLON UNIT 10 FEATURES AND COMPONENTS CONT 75 GALLON UNIT VACUUM RELIEF VALVE INSTALL THERMAL EXPANSION
82. Hazard could result in permanent damage to the controls or water heater and is not covered under the limited warranty Turn off power to the water heater Altering the water heater controls and or wiring in any way before performing any service could result in altering the ignition sequence allowing gas to Label all wires prior to disconnecting flow to the main burner before the ignition device is when performing service Wiring errors energized causing delayed ignition which can cause a fire or explosion can cause improper and dangerous i operation Any bypass or alteration of the vvater Verify proper operation after servicing heater controls and or wiring will result in voiding the appliance warranty Failure to follow these instructions can result in personal injury or death INTRODUCTION Thank You for purchasing this water heater Properly installed and maintained it should give you years of trouble free service ABBREVIATIONS USED Abbreviations found in this Instruction Manual include ANSI American National Standards Institute e ASME American Society of Mechanical Engineers e AHRI Air Conditioning Heating and Refrigeration Institute e NEC National Electrical Code e NFPA National Fire Protection Association e UL Underwriters Laboratory e CSA Canadian Standards Association QUALIFICATIONS QUALIFIED INSTALLER OR SERVICE AGENCY Installation and service of this water heater require
83. INSTALL PER TANK IF WATER HEATER IS LOCAL CODES INSTALLED IN A CLOSED WATER SYSTEM CAUTION HARNESS HAS 120 VAC IN OPERATION See Planning the Vent System Installation of Vent System and Condensate Piping for more information Figure 1C 75 GALLON UNIT 11 FEATURES AND COMPONENTS CONT Control Assembly Blocked Intake Switch Blocked Outlet Switch Blower Prover Switch Blower Assembly Burner Assembly Flame Sensor Igniter Assembly Junction Box Gas Control Valve Assembly Display Board Top Plastic Enclosure Display Enclosure 14 Exhaust Elbow Assembly 15 Condensate Tubing 16 Off On Switch 17 Display Label 18 Hot Water Outlet 19 Gas Supply 20 Main Manual Gas Shutoff Valve 21 Union 22 Inlet Water Shutoff Valve 23 Cold Water Inlet 24 Inlet Dip Tube 25 T P Relief Valve 26 Rating Plate 27 Labels 28 Drain Valve 29 Vent Terminal 30 Drain Pan 31 Anode Rod 32 Insulation 055 O GA N O 33 Temperature Probe 34 Access Door 35 Spark Module 12 CONTROLS AND SWITCHES This model is provided with three pressure switches These switches are essential to the safe and proper operation of the unit All switches are wired in series The controller is set up to shut the unit down whenever there is a failure of any of the switches It is important to understand the purpose of each switch Blocked Intake Switch Blower Prover Switch Blocked E
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90. and process chemicals are typical compounds which are potentially corrosive Do not store products of this sort near the heater Also air which is brought in contact with the heater should not contain any of these chemicals If necessary uncontaminated air should be obtained from remote or outside sources The limited warranty is voided when failure of water heater is due to a corrosive atmosphere See limited warranty for complete terms and conditions WATER PIPING Water temperature over 125 F 52 C can cause severe burns instantly resulting in severe injury or death Children the elderly and the physically or mentally disabled are at highest risk for scald injury A DANGER Feel water showering before bathing or Temperature available limiting valves are Read instruction manual for safe temperature setting HOTTER WATER CAN SCALD Water heaters are intended to produce hot water Water heated to a temperature which will satisfy space heating clothes washing dish washing cleaning and other sanitizing needs can scald and permanently injure you upon contact Some people are more likely to be permanently injured by hot water than others These include the elderly children the physically or developmentally disabled If anyone using hot water fits into one of these groups or if there is a local code or state law requiring a certain temperature water at the hot water tap then you must take special precautio
91. be drained and flushed every 6 months to reduce sediment buildup The water heater should be drained if being shut down during freezing temperatures See Figure 1B 50 GALLON UNIT amp Figure 1C 75 GALLON UNIT Features And Components in this manual for the location of the water heater components described below A DANGER e Burn harzard e Hot water discharge e Keep hands clear of drain valve discharge TO DRAIN THE WATER HEATER STORAGE TANK Turn off the electrical supply to the vvater heater Turn off the gas supply at the Main Gas Shutoff Valve if the water heater is going to be shut down for an extended period Ensure the cold water inlet valve is open Open a nearby hot water faucet and let the water run until the water is no longer hot Close the cold water inlet valve to the water heater Connect a hose to the water heater drain valve and terminate it to an adequate drain Open the water heater drain valve and allow all the water to drain from the storage tank Close the water heater drain valve when all water in the storage tank has drained Close the hot water faucet opened in Step 4 If the water heater is going to be shut down for an extended period the drain valve should be left open 8 9 10 TO FLUSH THE WATER HEATER STORAGE TANK 1 2 3 Turn off the electrical supply to the water heater Ensure the cold water inlet valve is open Open a nearby hot water faucet and let the wate
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100. experience this type of use you should consider using lower temperature settings to reduce scald hazards In all cases the following burn table must be used It s appearance may be altered to comply with each manual s style but the content must remain unchanged NOTE If the manual is to be used outside of the United States metric equivalents Celsius must be added to the table Table 11 Time for Permanent Burns 2nd amp 3rd Degree Most Severe Burns normal shower temp NEN negon Lamera zem E 149 65 154 67 8 U S Government Memorandum C P S C Peter L Armstrong Sept 15 1978 Water Temperature F C Time for 1st Degree Burn Less Severe Burns 140 60 HI LIMIT SWITCH ECO This water heater is equipped with an ECO energy cut out non adjustable high temperature limit switch The ECO is a normally closed switch that opens activates on a rise in temperature The ECO is located inside the Temperature Probe two red wires The ECO switch contacts will open when the water temperature reaches approximately 202 F 94 C and close at approximately 140 F 49 C If the ECO activates contacts open due to abnormally high water temperatures in the storage tank the control system will immediately de energize the 24 VAC Gas Control Valve and end the current heating cycle The control system will lock out disabling further heating operation The control system will display the Energy Cut Out EC
101. following should be used when determining an appropriate location for the termination kit Termination kit positioned where the vent vapors will not damage plants shrubs or air conditioning equipment Termination kit positioned so it will not be affected by wind eddy that may allow recirculation of combustion products or airborne leaves or light snow Termination kit positioned where it will not get damaged or be subjected to foreign objects such as stones balls etc Termination kit positioned where the vent vapors will not be objectionable NOTE See Venting Installation section starting on Page 24 in this manual for additional vent location requirements 2 Cut 1 hole 5 in diameter 3 Partially assemble concentric vent termination kit a Cement the Y concentric fitting to larger diameter kit pipe see Figure 20 Cement the rain cap to the smaller diameter kit pipe see Figure 27 b NOTE Instead of cementing the smaller pipe to the rain cap a field supplied stainless steel screw may be used to secure the 2 components together when field disassembly is desired for cleaning see Figure 27 When using alternate screw assembly method drill clearance hole in rain cap and pilot hole in vent pipe for screw being used Failure to drill adequate holes may cause cracking of PVC components allowing combustion products to be recirculated Failure to follow this warning could result in personal in
102. gas pressure to gas valve can cause serious injury or death e Turn off gas lines during installation e Contact a qualified installer or service agency for installation and service Undersized supply gas line low volume of supply gas Low Gas Pressure Excessive supply gas pressure Excessive manifold offset gas pressure Incorrect Fuel Type Vent exhaust gas recirculation at the vent and intake air pipe terminations on Direct Vent installations Excessive equivalent lengths of intake air and or vent exhaust piping installed Clogged blocked intake air screen s Clogged blocked the Main Burner MOMENTARY IGNITION A CAUTION e The combustion chamber and burner sleeve and housing become very hot during operation e Do not reach into the burner housing or combustion chamber if the water heater is still hot e Allow the water heater to cool and always use gloves when handling the main burner 53 If the Main Burner ignites momentarily but does not sustain ignition allow the water heater to try to ignite up to two more times until control system locks out and the Ignition Failure Fault message is displayed on the control system s LCD If the water heater is experiencing rough starts see Rough Starting Rough Operation on this page For momentary ignition problems without rough starting check the following e Incorrect manifold offset gas pressure Undersized supply gas line
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110. of water LEAKAGE CHECKPOINTS Never use this water heater unless it is completely filled with water To prevent damage to the tank the tank must be filled with water Water must flow from the hot water faucet before turning ON gas to the water heater B Anode Rod Connection A Inlet amp Le Outlet G Recirculation Connection C T amp P Connection D T amp P Outlet G Recirculation Connection H Cleanout E Drain Valve J Flue Outlet F Drain Valve Connection Figure 39 AWARNING Read and understand instruction manual and safety messages before installing operating or servicing this water heater Failure to follow instructions and safety messages could result in death or serious injury Instruction Manual must remain with water heater 50 A Condensation may be seen on pipes in humid weather or pipe connections may be leaking The anode rod fitting may be leaking Small amounts of water from temperature pressure relief valve may be due to thermal expansion or high water pressure in your area The temperature pressure relief valve may be leaking at the tank fitting Water from a drain valve may be due to the valve being slightly opened The drain valve may be leaking at the tank fitting Leakage from recirculation plug or pipe connection Leakage from the plug under the cleanout cover Leakage from the temperature probe con
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117. the rain cap a field supplied stainless steel screw may be used to secure the 2 components together when field disassembly is desired for cleaning see Figure 27 When using alternate screw method drill clearance hole in rain cap and pilot hole in vent pipe for screw size being used Failure to drill adequate holes may cause cracking of PVC components allowing combustion products to be recirculated Failure to follow this warning could result in personal injury or death Do not operate the heater with rain cap removed or recirculation of combustion products may occur Water may also collect inside larger combustion air pipe and flow to the burner enclosure Failure to follow this warning could result in product damage or improper operation personal injury or death 4 Install Y concentric fitting and pipe assembly through structure s hole and field supplied roof boot flashing MAINTAIN 12 IN MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL MAXIMUM OF 24 IN ABOVE ROOF VENT COMBUSTION INTAKE AIR ROOF BOOT FLASHING FIELD SUPPLIED SUPPORT FIELD SUPPLIED ELBOW FIELD SUPPLIED COMBUSTION INTAKE AIR Figure 28 NOTE Do not allow insulation or other materials to accumulate inside pipe assembly when installing through hole 5 Secure assembly to roof structure as shown in Figure 28 using field supplied metal strapping or equivalent support material NOTE Ensure termination height is
118. to adjust these settings and navigate the control system When the water temperature sensed by the control system from the Temperature Probe reaches the Operating Set Point the control system will end the heating cycle A heating cycle will be activated again when the sensed water temperature drops below the Operating Set Point minus the Differential setting NOTE Set the Operating Set Point to the lowest setting which produces an acceptable hot water supply for most efficient use Lower Differential settings may cause excessive heating cycles short cycling which can cause premature failure of components such as the Igniter Set the Differential at the highest setting which produces an acceptable hot water supply to prevent short cycling DESCRIPTION ACTION DISPLAY From the Desktop screen press the Operational Button under MENU The Main Menu screen will be displayed 22 00 0 AE Tank Temperature Operating Set Point Status Standby The Main Menu is vvhere all control system menus are listed see Table 14 Control System Menus for a complete list and description of control system menus Use the Up and Down Tempe ratures Buttons to vievv all control system menus from the Main Menu Heater Status VVith Temperatures menu selected highlighted in black in Display Settings the Main Menu screen press the Operational Button under SELECT to enter the Temperatures menu Heater nformation Current Fault Main Menu If t
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121. understand instruction manual This high efficiency water heater is certified for use without modification for an altitude of 10 100 feet 3 078 m Consult the factory for installation at altitudes over 10 100 feet 3 078 m Some gas utility companies derate their gas for altitude making it unnecessary to install high altitude orifices Call the local gas or utility company to verify BTU content Due to the input rate reduction at high altitudes the output rating of the water heater is also reduced and should be compensated for in the sizing of the equipment for applications FILLING THE WATER HEATER CAUTION Avoid water heater damage Hill tank with water before operating Never use this water heater unless it is completely full of water To prevent damage to the tank the tank must be filled with water Water must flow from the hot water faucet before turning ON gas to the water heater To fill the water heater with water 1 Close the water heater drain valve by turning the handle to the right clockwise The drain valve is on the lower front of the water heater 2 Open the cold water supply valve to the water heater NOTE The cold water supply valve must be left open when the water heater is in use 3 Toinsure complete filling of the tank allow air to exit by opening the nearest hot water faucet Allow water to run until a constant flow is obtained This will let air out of the water heater and the pi
122. water heater there is installed at least one anode rod see Figure 1B 50 GALLON UNIT amp Figure 1C 75 GALLON UNIT for corrosion protection of the tank Certain water conditions will cause a reaction between this rod and the water The most common 46 complaint associated with the anode rod is one of a rotten egg smell in the hot water The smell is a result of four factors which must all be present for the odor to develop a A concentration of sulfate in the supply water b Little or no dissolved oxygen in the water C A sulfate reducing bacteria which has accumulated within the water heater this harmless bacteria is nontoxic to humans d An excess of active hydrogen in the tank This is caused by the corrosion protective action of the anode rod Smelly water may be eliminated or reduced in some water heater models by replacing the anode rod s with one of less active material and then chlorinating the water heater tank and all water lines Contact the local water heater supplier or a qualified service agency for further information concerning an Anode Rod Replacement Kit and this chlorination treatment If the smelly water persists after the anode rod replacement and chlorination treatment we can only suggest that chlorination or aeration of the water supply be considered to eliminate the water problem Do not remove the anode rod leaving the tank unprotected By doing so all warranty on the water heater tank is voided
123. window or door that may be opened any other appliance oom above 100 000 Btu inches 30 cm for appliances above 50 000 Btu hr 15 kW Vertical clearance to ventilated soffit located e E E above the terminal within mechanical air supply 6 feet 1 83 m 3 feet 91 cm above if within a horizontal distance of ihist 10 feet 3 m horizontally 2 feet 61 cm from the center line of the terminal 12 inches 30 cm 12 inches 30 cm Clearance to unventilated soffit 12 inches 30 cm 12 inches 30 cm Clearance above paved sidewalk or paved driveway located 7 feet 2 13 m T 7 feet 2 13 m T on public property Clearance under veranda porch deck 12 inches 30 cm 12 inches 30 cm 1 or balcony Clearance to outside 2 feet 60 cm 2 feet 60 cm corner 18 inches 45 cm 18 inches 45 cm corner 1 In accordance with the current CSA B149 1 Natural Gas and Propane Installation Code 2 In accordance with the current ANSI Z223 1 NFPA 54 National Fuel Gas Code T Avent shall not terminate where it may cause hazardous frost or ice accumulations on adjacent property surfaces Permitted only if veranda porch deck or balcony is fully open on a minimum of two sides beneath the floor Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer s installation instructions 29 VERTICAL VENT TERMINAL INSTALLATION WHEN TERMINATING THROUGH A R
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125. 0 Filling The Water 22 23 VENTING 1 24 Vent Installation Considerations n0anneaannnannnennnnnnnnnnnnna 24 UL m d 24 Canadian Installations 24 Polypropylene Installations 25 Vent Pipe Termination 26 Planning The Vent System 26 Installation Of Horizontal Through The Wall Vent System 26 Direct Vent Terminal Installation 27 Installation Sequence 27 Termination Clearances Sidewall Power Vent 28 Termination Clearances Sidewall Direct Vent 29 Vertical Vent Terminal 1 1 522 30 Direct Vent Diagram 31 Concentric Vent Installation 32 Low Profile Termination Installation 35 LIGHTING AND OPERATION LABELS 36 TEMPERATURE REGULATION 37 CONTROL SYSTEM OPERATION 38 ON eebe b b n 38 Control System
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128. 1 Batterymarch Park Quincy MA 02269 If after reading this manual you have any questions or do not understand any portion of the instructions call the toll free number on the back cover of this manual for technical assistance In order to expedite your request please have the full Model Serial and Series number of the water heater you are working with available for the technician This information is located on the water heater s rating plate Carefully plan the placement of the water heater Examine the location to ensure that it complies with the requirements in Locating The Water Heater on Page 14 and the Rough In Dimensions on Page 8 DIMENSIONS AND CAPACITY DATA ROUGH IN DIMENSIONS 50 GALLON UNIT m UPPER SIDE CONNECT OG GAS PIPING CONNECTION AIR INTAKE CONNECTION C DIAMETER TOP VIEW Q LOWER SIDE CONNECT INSTALL IN ACCORDANCE WITH LOCAL CODES Figure 1 DIMENSIONS FOR 50 GALLON UNIT GAS PIPING CONNECTION AIR INTAKE CONNECTION C DIAMETER 1O3NNOO 3015 4344 1O3NNOO JAIS Figure 1A DIMENSIONS FOR 75 GALLON UNIT Table 1 ROUGH IN DIMENSIONS us a s T c gt e 7 Top Inlet and Outlet 506 3 4 NPT 756 1 NPT Side Inlet and Outlet 3 4 NPT Gas Inlet 1 2 NPT DIMENSIONS AND CAPACITY DATA Table 2 CAPACITY GAS AND ELECTRICAL CHARACTERISTICS Approximate Capacity Manifold Pressure Electrical Characteristics U S Gals
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131. 2 MAX 30 5 cm INSULATION BLANKETS 100 sq in VENTILATION 7 6 cm AIR 211 Hazard Carbon Monoxide Gas 12 MAX 30 5 cm FRONT VIEW OF DOOR 645 sq cm OPENING C AIR DUCT Do not obstruct water heater air intake with insulating blanket Gas and carbon monoxide detectors are available Figure 4 COMBUSTION AIR AND VENTILATION Install water heater in accordance with If this water heater will be used in beauty shops barber shops the instruction manual I I EA cleaning establishments or self service laundries with dry cleaning Breathing carbon monoxide can cause brain damage or equipment it is imperative that the water heater s be installed death Always read and understand instruction manual direct vent so that all air for combustion and ventilation is taken from outdoors Insulation blankets are available to the general public for external use Propellants of aerosol sprays and volatile compounds cleaners on gas water heaters but are not necessary with these products The chlorine based chemicals refrigerants etc in addition to being purpose of an insulation blanket is to reduce the standby heat loss highly flammable in many cases will also react to form corrosive encountered with storage tank heaters Your water heater meets or hydrochloric acid when exposed to the combustion products of exceeds the Energy Policy Act standards with respect to insulation and tewater heater The results can be hazardous an
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133. 3 4 NPT bushing that forms the top of the anode rods Do not disassemble the retaining nut and wire terminal from the top while installed in the water heater the anode rods electrode may fall inside the tank Remove the entire anode rod from the water heater prior to inspection Clean the anode rods with a soft cloth and reinstall Follow the instructions for filling the water heater when finished TEMPERATURE PRESSURE RELIEF VALVE TEST A DANGER e Burn hazard e Hot water discharge e Keep clear of Temperature Pressure Relief Valve discharge outlet It is recommended that the Temperature Pressure Relief Valve should be checked to ensure that it is in operating condition every 6 months When checking the Temperature Pressure Relief Valve operation make sure that 1 no one is in front of or around the outlet of the Temperature Pressure Relief Valve discharge line and 2 that the water discharge will not cause any property damage as the water may be extremely hot Use care when operating valve as the valve may be hot To check the temperature pressure relief valve lift the lever at the end of the valve several times see Figure 38 The valve should seat properly and operate freely If after manually operating the valve it fails to completely reset and continues to release water immediately close the cold water inlet to the water heater and drain the water heater see Draining And Flushing on Page 48 Replace the Temper
134. 4 or the Natural Gas and Propane Installation Code CAN CSA B149 1 A VVARNING e Use joint compound or tape compatible with propane Leak test before operating heater Disconnect gas piping and shut off valve before pressure testing system Use pipe joint compound or teflon tape marked as being resistant to the action of petroleum Propane L P gases The water heater and its gas connection must be leak tested before placing the water heater in operation The water heater and its individual Shut off valve shall be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1 2 pound per square inch 3 5 kPa It shall be isolated from the gas supply piping system by closing its individual manual Shut off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1 2 pound per square inch 3 5 kPa AWARNING Do not use water heater with any gas other than the gas shown on the rating plate e Excessive pressure to gas control valve can cause serious injury or death Turn off gas installation e Contact qualified service agency lines during installer or 19 GAS SUPPLY SYSTEMS Low pressure building gas supply systems are defined as those systems that cannot under any circumstances exceed 14 W C 1 2 PSI Gauge These systems do not require pressure regulation Measurements should
135. 5 uip ddo j Au Ins Jesod nod jueouqe np s idne suononujsut p qjueujlessmJeAe p S h nbn sejjeanou 0 1 862u849J9J eunjnj JNOd euuoid es e no nee ejneuo np 9199 l Ins e uornesinn p jenueul l JuAnooa Sed N enbiuueui 5 e eBueuoop dednos e no elsouu u l euod p WWANODSI SECON nee ejneuo np snssap l Ins eujeis s np 101 ebeyoye anoo Sed ON ejue nnos e ep ejquiesue JoBuep sues jueujeuuomnouo un 19Jnsse inod np snss p e ins enbiuueui uonoejo d ep jenbijdde sed N OW El saunssej q ep eix udse eun eipueour un 1enbo oJd u ul ll mu A eeudojdde uonsnquioo eun jnod sinboJ 1iq p e ejpureuseJ jned suononujjsul seo SL 5 Sed N lt NOTIVO SZ JLINN OL N gt 9 lt NOTIVO OS 31INQ 41 aniy gt El JIOA snoss p 5 seuuonueu sjuesoduioo sep uoieouijuepi inoq suononu sul seo eJAins nee ejyneuo e oejuejos ddoy Au eun jenbi dde p 1isiouo uo IS eJiessooou uou enbiuueui 0110 10 eun juepuoJ eJlossoooe 1ne euo ep eyed ep nbiuu u uomnooejoJd ep seouebDixe s p 199 inb nod 15v olloq A BJ8u3 ep seuuou So ssed p no puod 1 nee ejjneuo eDeyxoois 1Il0A19s9J AB s l oo e Na
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139. B181 2 Schedule 40 80 120 ASTM D1785 or CSA B137 3 or SDR Series ASTM D2241 or CSA B137 3 CPVC pipe materials CPVC41 ASTM D2846 or CSA B137 6 Schedule 40 80 ASTM F441 or CSA B137 6 or SDR Series ASTM F442 ABS pipe materials Schedule 40 DWV ASTM D2661 or CSA B181 1 and Centrotherm ECO Systems and DuraVent Polypropylene listed vent systems The fittings other than the TERMINATION should be equivalent to PVC DWV fittings meeting ASTM D 2665 Use CPVC fittings ASTM F 438 for CPVC pipe and ABS fittings ASTM D 2661 3311 for ABS pipe If CPVC or ABS pipe and fittings are used then proper cement must be used for all joints including joining the pipe to Termination PVC Material If Polypropylene pipe and fittings are used the metal joint connector rings available from the Polypropylene vent manufacturer must be used to stiffen the joints of pipes PVC Materials should use ASTM D 2564 Grade Cement CPVC Materials should use ASTM F 493 Grade Cement and ABS Materials should use ASTM D 2235 Grade Cement CANADIAN INSTALLATIONS Installation of this water heater must comply with the current edition CAN CSA B149 1 Natural Gas and Propane Installation Code which requires the vent system components be certified to ULC S636 This water heater has been design certified to be vented with PVC CPVC pipe and Polypropylene pipe certified and marked as complying with ULC S636 If the water heater is being installed as a replacement for an e
140. D GRILLES The free areas of the fresh air openings in the instructions that follow do not take in to account the presence of louvers grilles or screens in the openings The required size of openings for combustion ventilation and dilution air shall be based on the net free area of each opening Where the free area through a design of louver or grille or screen is known it shall be used in calculating the size of opening required to provide the free area specified Where the louver and grille design and free area are not known it shall be assumed that wood louvers will have 25 free area and metal louvers and grilles will have 75 free area Non motorized louvers and grilles shall be fixed in the open position 16 FRESH AIR OPENINGS FOR CONFINED SPACES The following instructions shall be used to calculate the size number and placement of openings providing fresh air for combustion ventilation and dilution in confined spaces The illustrations shown in this section of the manual are a reference for the openings that provide fresh air into confined spaces only DO NOT refer to these illustrations for the purpose of vent installation See Venting Installation on Page 24 for complete venting installation instructions OUTDOOR AIR THROUGH TWO OPENINGS Figure 5 The confined space shall be provided with two permanent Openings one commencing within 12 inches 300 mm of the top and one commencing within 12 inches 300 mm of the bott
141. D np 0 Supp juos senbuoisiu s uuop se AMOYVINAY J9AOJd j8neux3 pexoolg nee ejjneuo np ejeniur uonej ejsui sindap 1se s eouej rejop ep uonipuoo eun NO SIO ep eJjquiou np ueno 610 l juanuoo nu ui Aly exeju pexoolg Hp JO SIO p 10 l juan J nu w e inod seq O23 l SJOA 1 NEY l SIOA suo noq S Jesi 1 sejqej6oJ uou sejjeuuorejodo eJnjiej uoniu suoneuloju sep j uenuoo nueu eo nu w eo suep mod Ieuuonog as Od 13S gt snos Jeuuonejedo uoinoq e ins saAndde PAUS KC FINE y jediouud nue A np ped e ooupumgiap ep eouaJnooQo 1 9 459VHOl44V NOILOV NOILdlH2OS3G 3ONV TilV3d3Ga 30 sanof og sede OEH 1se seouejiejop sep enbuoisiu ep eJiouiau e 300HVIN3H OV eunjre Jj H V D no eous ejog ep enbeuo ep sepp s l oDe sulul JG Anod MIIA gt snos jeuuonejedo uoinoq l ins JeAnddy Oy 9nssaJgd SES MOJ ugioue snid ai e1eoe dujoJ oBe suluu pG use end l jueujeuo oe unejepojou UN l l p 19 eoue eJop sebessow SJOIUIS 6 nou s 9 s eun 1 gv 18neuxa pexoolg p p 6 J p eis o oBe sulu Le nue8ui e jenBi eu nod seq l 9 1 n u 9 SJ9A suo noq S Joer sejqej69J uou sejj euuonejodo
142. Dimensions AOS Kit IPEX Part Pipe Outside Hole Spacing Number Number H Diameter ctr to ctr 327479 000 196984 2 Flush Mount Vent Kit 2 375 Vent Air Termination To Boiler Intake Air Connection E12 Min to I Over Hang Vent Air Termination Min Snow Line Figure 34 12 Min between Edge of Air Inlet and Adjacent Vent Outlet Air Figure 35 327478 000 196985 3 Flush Mount Vent Kit Table 10 Each Kit Contains Item Description Base two holes Stainless Steek Screws Qty Cap one hole Plastic Anchors 35 LIGHTING AND OPERATION LABELS BEFORE OPERATING ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES This appliance does not have a pilot It is equipped with if you cannot reach your gas supplier call the an ignition device which automatically lights the fire department burner Do not try to light the burner by hand C Use only your hand to push in or turn the gas BEFORE OPERATING smell all around the appliance 5 dade saa 55 3 ze ob will area for gas Be sure to smell next to the floor because Me SSE REN some gas is heavier than air and will settle on the floor it call a qualified service technician Force or attempted repair may result in a fire or ex VVHAT TO DO IF YOU SMELL GAS plosion Do not try to light any appliance Do not use this appliance if any part has been under Do not touch an
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144. ER Neutral DOL TRed 16 hot Neutra L Dand 5 White Green A White Orange Jo Speed Back _ T20v to spark OS 2 Black 2 5 White Green 2 MEN e 4 White Green AaS suy Wat orange 8 _ Black Splice ke 22 iz Central Control Board ET 5 Neutral s S 2vihite je E 2 CCB m 3Green 8 Upper Temperature Ferrite Probe ECO Bead Ko Sa OU m 8 p Outlet Pressure c 6 White Green a 2 avoc ss 22voc T aa o Gg gt ER 5 2WRhite Blue 24VAC d LE Transformer 9 1 White Red LL24VAC Cc cU O Blower Prover oo SG E Inlet Return Prover Power ov 1 Black 5 Pressure Outlet Return Inlet Power 2 Cas Li Switch 202 pme l 22 Gas Valve Power Switch Blu Blu G D 0 s 48 66 ww 48 s AA O e Q R Splice Sg Spice 5 Rod Connects to Burner Yellovv Bolt Flame Rod Green Gasy witch CCB J14 Limit String 1 Blue z lt 3 Yellow 4 2 3 Yellow Gas Valve E 5Violet WARNING DISCONNECT FROM ELECTRICAL SUPPLY BEFORE SERVICING UNIT REPLACE ALL DOORS AND PANELS BEFORE OPERATING HEATER IF ANY OF THE ORIGINAL WIRES SUPPLIED WITH THE APPLIANCE MUST BE REPLACED IT MUST BE REPLACED WITH APPLIANCE WIRE MATERIAL WITH MINIMUM TEMPERATURE RATING OF 105 C AND A MINIMUM SIZE OF NO 18 AWG Figure 41 POWER VENT WIRING SCHEMATIC 57 NOTES 58 LIMITED
145. EREECHEN solvents or adhesives in the Condensate lines must be free and clear of debris same room or area near the and must not allow back flow through the hose water heater cannot be seen The condensate lines must be able to flow freely are heavier than air to an appropriate drain Keep flammable products go along way on the e Do not allow condensate lines to become floor and crimped closed 1 far away from heater can be carried from Analyze the entire vent system to make sure 2 inapproved containers other rooms to the that condensate will not become trapped in a 3 tightly closed and ignition device by air section of vent pipe and therefore reduce the open 4 out of children s reach currents cross sectional area of the vent Breathing carbon monoxide can cause brain damage or death Always read and understand instruction manual Vapors GENERAL SAFETY INFORMATION A WARNING A VVARNING Fire or Explosion Hazard Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance For continued protection against risk of fire Avoid all ignition sources if you smell gas Do not expose water heater controls to excessive gas carpeted floor pressure e Do not operate water heater if Use only the gas shown on the water heater rating plate flood damaged Maintain required clearances to combustibles Keep ignition sources away from fauc
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147. IM and CCB software revisions can be viewed in this menu Current Fault Displays any current Alert or Fault messages Fault History This control system menu retains a list of the last nine 9 Fault and Alert messages with a time stamp The newest event will replace the oldest Fault history memory is cleared after 30 days Fault Occurrence This control system menu retains a running total of how many times each Fault condition has occurred since the water heater was first installed Fault occurrences numbers are saved in the CCB memory indefinitely NOTE if the CCB is replaced during service the fault occurrence historical information for the water heater is lost Restore Factory Defaults This control system feature allows the user to restore control system user settings to their factory default settings Display Settings preferences ARE NOT changed when factory defaults are restored Help Screens Text based operational and user information explaining how to change user settings navigate the control system menus and icon descriptions 40 USER SETTINGS amp CONTROL SYSTEM MENUS TEMPERATURES OPERATING SET POINT AND DIFFERENTIAL ADJUSTMENT The Operating Set Point is adjustable from 90 F 42 C to 180 F 82 C for commercial models The factory setting is 120 F 49 C The Differential is adjustable from 2 to 20 The factory setting is 8 These user settings are accessed from the Temperatures menu These instructions explain how
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150. Instruction Manual COMMERCIAL GAS WATER HEATERS POWER VENT POWER DIRECT VENT GAS MODELS S Ye Smith L r CERTIFIED WITH DIRECT SPARK IGNITION MODELS BTX 100 BTXL100 SERIES 130 131 Ashland City TN 37015 www ahridirectory org www hotwater com Forino call S oA QT WATER QUALITY Low Lead Content This mode is iCOMM COMPATIBLE CANADIAN MANUAL WARNING If the information in these instructions is not followed exactly a fire or explosion may result causing property damage personal injury or death Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DOIF YOU SMELL GAS e Donottry tolight any appliance AWARNING e Immediately call your gas supplier Read and understand instruction from a neighbor s phone Follow the manual and safety messages ae E before installing operating or gas supplier s instructions servicing this water heater e Do not touch any electrical switch do not use any phone in your building e f you cannot reach your gas supplier Failure to follow instructions and safety messages could result in call the fire department Re Instruction manual must remain with Installation and service must be mer neater performed by a qualified installer service agency or the gas supplier For Your Safety AN ODORANT IS ADDED TO THE GAS USED Thank you for buying this energ
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154. O Fault message on the LCD screen It is important that a Qualified Service Technician be contacted to determine the reason for the ECO activation before resetting the ECO Once the reason has been determined and corrected the ECO can be reset as follows Should the ECO activate the water temperature must drop below 140 F 49 C before the control system can be reset Once the water temperature has cooled below this point the power supply to the water heater must be turned off and on again to reset the control system Contact your dealer or servicer if continued high limit switch operation occurs CONTROL SYSTEM OPERATION OVERVIEW The water heaters covered in this manual are equipped with an electronic control system that regulates water temperature inside the storage tank Heating cycles and ignition are managed by the control system The ECO energy cut out Flame Sensor pressure switches and Temperature Probe is monitored by the control system The Combustion Blower Igniter and the 24 Volt Gas Control Valve are all energized by the control system The main components of the control system are a UIM user interface module and a CCB central control board The UIM is located on the top front side of the water heater The CCB is mounted on top of the water heater inside a protective enclosure CONTROL SYSTEM NAVIGATION All operational information and user settings are displayed and accessed from the UIM The UIM houses the co
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156. OOF THE FOLLOWING SPECIFICATIONS PERTAINING TO TERMINAL LOCATION MUST BE FOLLOWED 1 Proper support must be provided for all pipe protruding through the roof 2 The vertical roof terminations should be sealed with a plumbing roof boot or equivalent flashing 3 The air intake termination and the exhaust vent termination must penetrate the same side of roof 4 The center line of the air intake termination and the center line of the exhaust vent termination must be no closer than 24 61cm See Figure 18 and Figure 19 FLAT ROOF INSTALLATION On flat roof installations the air intake and the exhaust vent terminations must be a minimum of 24 inches 60 cm above any parapet vertical wall or structure within 10 feet 3 m horizontally See Figure 20 PLUMBING VENT ROOF BOOT 24 61cm TYP BOTH PIPES MINIMUM wo lt EXHAUST gt VENT TERMINAL 7 A amp B 12 30 5cm ABOVE ROOF OR SNOW ACCUMULATION LEVEL VERTICAL VENT TERMINATION ALL MODELS Figure 18 ALL MODELS EXHAUST VENT TERMINAL INTAKE VENT TERMINAL FLASHING FLASHING 12 30 5cm 12 30 5cm ABOVE ABOVE AVERAGE AVERAGE RSR SNOWFALL NOTE Intake Vent Terminal wall or Vertical Vent installations are required for Direct Vent units Figure 19 IF LESS THAN 10 FEET 3 m NOTE AIR 24 INCHES 60 cm INTAKE MINIMUM HEIGHT ABOVE TERMINATION SHOWN HERE INTAKE AIR AND OR VENT TERMINATION S MUST BE A MINIMUM OF 24 INCES
157. Occurrence This menu contains a running total of how many times each Fault Blocked Intake Air condition has occurred since the water heater was first installed Blocked Exhaust NOTE Historical data is stored in the CCB s memory If this CCB Blower Prover is replaced during servicing the historical data on the CCB being replaced will be lost The data stored in the new circuit board will no dalan longer reflect the entire history of the vvater heater ank lemp 4 RESTORE FACTORY DEFAULTS DESCRIPTION ACTION DISPLAY Select Restore Factory Defaults from the Main Menu and press the Operational Button under SELECT to enter this menu Restore Factory Defaults To restore the adjustable user settings to their factory default settings press the Operational Button underneath YES The Are you sure you want to display will show text confirming the factory default settings have restore the system to factory been restored defaults Press the Operational Button underneath BACK to exit the Restore Factory Defaults menu 44 SERVICE CONTACT INFORMATION The control system has a discrete menu that Installing contractors and or qualified service technician can access to enter contact information for their customers This contact information will be displayed with all Fault and Alert messages DESCRIPTION ACTION DISPLAY From the Desktop Screen press and hold down the middle unmarked Operational Button for 30 s
158. PRESSURE REQUIREMENTS All models require a minimum gas supply pressure of 3 5 W C 0 87 kPa for natural gas and 8 0 W C 1 99 kPa for propane The minimum supply pressure is measured while gas is not flowing static pressure AND while gas is flowing dynamic pressure The supply pressure static and dynamic should never fall below 3 5 W C 0 87 kPa for natural gas or 8 0 W C 1 99 kPa for propane The supply pressure should be measured with all gas fired water heaters connected to the common main firing at full capacity If the supply pressure drops more than 1 5 W C 0 37 kPa as gas begins to flow to the water heater then the supply gas system including the gas line and or the gas regulator may be restricted or undersized See Supply Gas Regulator section and Gas Piping section of this manual The gas control valve on all models has a maximum gas supply pressure limit of 14 W C 3 48 kPa The maximum supply pressure is measured while gas is not flowing static pressure AND while gas is flowing dynamic pressure SUPPLY GAS REGULATOR The maximum allowable gas supply pressure for this water heater is 14 inches W C 3 5 kPa Install a positive lock up gas pressure regulator in the gas supply line if inlet gas pressure can exceed 14 inches W C 3 5 kPa at any time Regulators must be sized used according to manufacturer s specifications If a positive lock up regulator is required follow these instructions 1 Positive l
159. R TEMPERATURE AT 120 F 49 C WILL REDUCE THE RISK OF SCALDS Some states require settings at specific lower temperatures The water temperature is controlled using the Temperature Control on the Display at the front of the unit See Figure 1B 50 GALLON UNIT amp Figure 1C 75 GALLON UNIT This control utilizes a temperature probe to determine the tank temperature The temperature probe is located behind the heater s front display The temperature may be adjusted from 90 F 32 C to 180 F 82 C The temperature was preset to 120 F 49 C before the heater was shipped from the factory It is recommended that lower water temperature be used to avoid the risk of scalding It is further recommended in all cases that the water temperature be set for the lowest temperature which satisfies your hot water needs This will also provide the most energy efficient operation of the water heater and minimize scale formation 37 Valves for reducing the point of use temperature by mixing cold and hot water are available see Figure 9 Also available are inexpensive devices that attach to faucets to limit hot water temperatures Contact a licensed plumber or the local plumbing authority The table below shows the approximate time to burn relationship for normal adult skin Short repeated heating cycles caused by small hot water uses can cause temperatures at the point of use to exceed the thermostat setting by up to 20 F 11 C If you
160. TION CONSIDERATIONS 14 Locating The Water Heater 14 Insulation Blankets 15 Combustion Air And Ventilation 15 Unconfined Space nnne rns 16 Conined 100 sean aE 16 Fresh Air Openings For Confined Gpoaces 16 Outdoor Air Through Two Openings 522 16 Outdoor Air Through One Opening 16 Outdoor Air Through Two Horizontal Ducts 22 2 17 Air From Other Indoor Spaces 17 INSTALLATION REQUIREMENTS 2 18 Chemical Vapor Corrosion 18 KA Ge i E 18 Power ci 18 Mixing Valves 19 19 Gas Supply Systems ens 20 Gas Pressure 65 20 Supply Gas Regulator 20 Dishwashing Machines 20 Space Heating And Potable Water System 21 Closed Water SystemS 21 Thermal Expansion 21 Temperature Pressure Relief Valve 22 Condensate Piping n 23 High Altitude Installations 2
161. The Status line shows the current operational state of the control system in real time See Table 13 Operating States for a description of the various operating states The Desktop screen also displays animated Status Icons to convey operational information see Table 12 Status Icons for a complete list and description of the Status Icons UIM user interface module Desktop Screen Shown LCD Screen Information Display Tank Temperature Operating Set Point Status Heating Status Icons OFF Operational buttons are multifunctional Their current function is defined by the text that appears directly above each button on the LCD screen MANUFACTURER MODEL INFORMATION Title Bar 120 F u n 4 3 Operational buttons enter exit menus select menu items activate adjustment modes confirm cancel changes 103 F Up amp Down buttons navigate menus adjust user settings Figure 36 38 STATUS ICONS The Status Icons are displayed on the Desktop screen and convey operational and diagnostic information The icons are described in the table below Table 12 STATUS ICONS Water temperature in the tank has fallen Shaded area of the animated thermometer icon will rise and fall in response to water temperature in the storage tank as sensed from the Temperature Probe Water temperature in the tank has reached the Operating Set Point The control system en
162. US INSTALLATIONS 2 CANADIAN INSTALLATIONS L US INSTALLATIONS Clearance to each side 3 feet 91 cm within a of center line extended 2 Jl 81 cm within a height 15 feet uu ht 15 feet 4 5 m above meter regulator above the meter regulator assembly assembly Clearance to service regulator vent outlet 3 feet 91 cm 3 feet 91 cm 6 inches 15 cm for appliances up Clearance to a non to 10 000 Btu hr 3 kW 12 inches e 4 feet 1 2 m below or to Clearance to mechanical air supply 30 cm for appliances between Side pi opening fool C permanently closed 12 inches 30 cm 12 inches 30 cm J inlet into building or 10 000 Btu hr 3 kW and 100 000 p 9 b Clearance above grade veranda porch deck or 112 inches 30 cm 12 inches 30 cm balcony 4 5 m above the meter regulator assembly 6 inches 15 cm for appliances up to 10 000 Btu hr 3 kW 12 inches 30 14 feet 1 2 m below cm for appliances between 10 000 or to side of opening Btu hr 3 kW and 100 000 Btu hr 30 1 foot 30 cm above kW 36 inches 91 cm for appliances opening above 100 000 Btu hr 30 kW Clearance to window or door that may be opened window combustion air inlet to Btu hr 30kW 36 inches 91cm 90 0 above opening any other appliance for appliances above 100 000 Btu hr 30 kW Vertical clearance to ventilated soffit located above the terminal Clearance to a olam above d within a horizontal 12 inches 30 cm 12 inc
163. WARRANTY A O Smith Corporation the warrantor extends the following LIMITED WARRANTY to the owner of this water heater 1 THE TANK If the glass lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein during the first THREE years after initial installation the warrantor will supply a replacement tank less burner and controls or a complete new A O Smith water heater of equivalent size and current model at the warrantor s option Some government agencies are requiring energy efficient standards for water heaters In the event regulations prohibit sale of a model of equivalent size and construction A O Smith will provide a model which complies with the regulations of your area in which case the consumer will be charged the difference in price between the like replacement and the energy efficient model required The warranty on the replacement water heater will be limited to the unexpired term of the original warranty 2 ALL OTHER PARTS If within ONE year after initial installation of this water heater any part or portion shall prove upon examination by the warrantor to be defective in material or workmanship the warrantor will repair or replace such part or portion at its option 3 CONDITIONS AND EXCEPTIONS This warranty shall apply only when the water heater is installed in accordance with local plumbing and building codes ordinances and regulations th
164. WATER 12 TO 15 30 38 cm TEMPERED WATER Na Ww TO TANK Figure 9 The National Sanitation Foundation also recommends circulation of 180 F 82 C water The circulation should be just enough to provide 180 F 82 C water at the point of take off to the dishwashing machine Adjust flow by throttling a full port ball valve installed in the circulating line on the outlet side of the pump Never throttle flow on the suction side of a pump Note To comply with NSF Standard 5 installation requirements the bottom of the water heater must be sealed to the floor with a silicone based sealant or elevated 6 inches above the floor SPACE HEATING AND POTABLE WATER SYSTEM Your water heater is equipped with inlet outlet connections for use in space heating applications see Figure 10 If this water heater is to be used to supply both space heating and potable drinking water the instructions listed below must be followed Be sure to follow the manual s shipped with the air handler or other type heating system This water heater cannot be used in space heating applications only This water heater is not to be used as a replacement for an existing boiler installation Do not use with piping that has been treated with chromates boiler seal or other chemicals and do not add any chemicals to the water heater piping e f the space heating system requires water temperatures in excess of 120 F a mixing valve must b
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168. above the roof surface or anticipated snow level as shown in Figure 28 6 Install rain cap and small diameter pipe assembly in roof penetration assembly Ensure small diameter pipe is cemented and bottomed in Y concentric fitting Cement water heater combustion air intake and vent pipes to concentric vent termination assembly See Figure 28 for proper pipe attachment Operate heater through 1 heat cycle to ensure combustion air and vent pipes are properly connected to concentric vent termination connections FLAT ROOF INSTALLATION When installing a concentric termination vertically through a flat roof the termination s vent cap must be a minimum of 10 feet 3 m away from any parapet vertical wall or structure as shown in Figure 28A If this required 10 foot 3 m distance to a parapet vertical wall or structure cannot be maintained standard terminations must be used See Vertical Termination Installation CONCENTRIC TERMINATION S MUST BE A MINIMUM OF 10 FEET 3 m AVVAY FROM ANY PARAPET VERTICAL VVALL OR STRUCTURE CONCENTRIC TERMINATION FLAT ROOF CLEARANCE Figure 28A 33 INSTALLATION SIDE WALL TERMINATION ROOF OVERHANG e m 1 MAXIMUM COMBUSTION Ti INTAKE AIR 12 MAINTAIN 12 IN CLEARANCE ABOVE HIGHEST ANTICIPATED 2 SNOW LEVEL OR GRADE WHICHEVER IS GREATER Figure 29 1 Determine best location for termination kit NOTE Consideration for the
169. act Blocked Inlet PS Blocked Outlet PS Closed Blower Prover PS Open Igniter On No Gas Valve On Standby Closed Closed Status displays the current Operating State see Table 13 Operating States for a description of the various operational states ECO Contact Blocked Inlet PS Blocked Outlet PS Blower Prover PS displays the current state of the switch contacts open or closed Igniter On Gas Control Valve On displays whether or not the control system is currently energizing these water heater components yes energized no de energized Flame Detected displays whether or not the control system has detected Main Burner flame during ignition from the Flame Sensor Bottom of Menu Heater Status Gas Valve On Flame Detected 42 DISPLAY SETTINGS DESCRIPTION ACTION DISPLAY Select Display Settings from the Main Menu and press the Operational Button under SELECT to enter this menu This menu contains adjustable display options for viewing information on the Temperature Units LCD screen Use the Up amp Down Buttons to navigate the menu Backlight Delay Contrast Display Settings e Temperature Units Adjustable user setting that changes temperature units display to Celsius C or Fahrenheit F Backlight Delay Adjustable user setting that determines how long the LCD backlight remains illuminated after a key has been pressed Available settings are Always Off 10 30 or 60 seconds
170. al Use this reference to locate and identify various components on the water heater See the Installation Checklist and Troubleshooting on Page 51 By using this checklist the user may be able to make minor operational adjustments and avoid unnecessary service calls However service and diagnostic procedures should only be performed by a Qualified Service Agency NOTE Costs to correct installation errors are not covered under the limited warranty Be sure to turn off power when working on or near the electrical system of the water heater Never touch electrical components with wet hands or when standing in water The installation must conform to all instructions contained in this manual and the local code authority having jurisdiction These shall be carefully followed in all cases Authorities having jurisdiction should be consulted before installation begins if there are any questions regarding compliance with local state or national codes In the absence of local codes the installation must comply with the current editions of the National Fuel Gas Code ANSI Z223 1 NFPA 54 and the National Electrical Code NFPA 70 or CAN CSA B149 1 the Natural Gas and Propane Installation Code and CSA C22 1 the Canadian Electrical Code All documents are available from the Canadian Standards Association 8501 East Pleasant Valley Road Cleveland OH 44131 NFPA documents are also available from the National Fire Protection Association
171. al injury A WARNING Do not elevate the condensate hose on the bottom of the water heater above the bracket attached to the side of the unit This must be true for the entire length of the hose including the exit into an appropriate drain ai 5 Condensate lines must be free and clear of debris and must not allow back flow through the hose The condensate lines must be able to flow freely to an appropriate drain Do not allow condensate lines to become crimped closed e Analyze the entire vent system to make sure that condensate will not become trapped in a section of vent pipe and therefore reduce the open cross sectional area of the vent Condensation warning this water heater is a condensing unit and requires a drain to be located in close proximity to allow condensate to drain safely The condensate drains from unit at the exhaust elbow located at bottom of unit Note it is important that the condensate hose not be elevated above the exhaust elbow see Figure 12 Condensate build up will block the exhaust outlet which will cause improper operation Exhaust Figure 12 The condensate drain line must be routed to a suitable drain If no floor drain is available or the drain is above the level of the condensate line install a condensate pump that is resistant to the acidic condensate These pumps are available from local distributors If the pump is not resistant to acidic water a condensate neutralizer must be
172. and Always On Contrast Adjustable user setting to adjust the LCD screen CHANGE contrast between text and background NOTE These settings are adjusted in the same way described for the Operating Set Point and Differential Adjustment HEATER INFORMATION DESCRIPTION ACTION DISPLAY Select Heater Information from the Main Menu and press the of Menu Operational Button under SELECT to enter this menu This menu Heater Information contains non adjustable operational information e Elapsed Time Total accumulated time the control system Elapsed Time water heater has been energized 10 day 0 hrs 0 mins Burner On Time Total accumulated time the control system Burner On Time has been in the heating operating state burner run time 5 hrs 22 mins Total Cycle Count Total accumulated count of heating Total Cycle Count 0000035 cycles CCB Version X XX Config CRC A number associated with the configuration Config CRC data CCB Version Software version for central control board UIM Version Software version for user interface module NOTE Historical data is stored in the CCB s memory If this CCB Bottom of Menu is replaced during servicing the historical data on the CCB being Heater Information replaced will be lost The data stored in the new circuit board will no longer reflect the entire history of the water heater Total Cycle Count 00000035 PN The Elapsed Time Burner On Time and Cycle Count indicate CCB Version age u
173. and to ensure safe temperatures at fixtures Water heated to a temperature which will satisfy clothes washing dish washing and other sanitizing needs can scald and cause permanent injury upon contact Short repeated heating cycles caused by small hot water uses can cause temperatures at the point of use to exceed the water heater s temperature setting by up to 20 F 11 C Some people are more likely to be permanently injured by hot water than others These include the elderly children the infirm and the physically mentally disabled Table 4 shows the approximate time to burn relationship for normal adult skin If anyone using hot water provided by the water heater being installed fits into one of these groups or if there is a local code or state law requiring a certain water temperature at the point of use then special precautions must be taken In addition to using the lowest possible temperature setting that satisfies the demand of the application a Mixing Valve should be installed at the water heater See Figure 9 or at the hot water taps to further reduce system water temperature Mixing valves are available at plumbing supply stores Consult a Qualified Installer or Service Agency Follow mixing valve manufacturer s instructions for installation of the valves In all cases the following burn table must be used Table 4 Time for Permanent Burns 2nd amp 3rd Degree Most Severe Burns Wa
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175. ature Pressure Relief Valve with a properly rated sized new one see Temperature Pressure Relief Valve on Page 22 for instructions on replacement TEMPERATURE PRESSURE RELIEF VALVE DISCHARGE PIPE Figure 38 If the Temperature Pressure Relief Valve on the water heater weeps or discharges periodically this may be due to thermal expansion NOTE Excessive water pressure is the most common cause of Temperature Pressure Relief Valve leakage Excessive water system pressure is most often caused by thermal expansion in a closed system See Closed Water Systems and Thermal Expansion on Page 21 The Temperature Pressure Relief Valve is not intended for the constant relief of thermal expansion Temperature Pressure Relief Valve leakage due to pressure build up in a closed system that does not have a thermal expansion tank installed is not covered under the limited warranty Thermal expansion tanks must be installed on all closed water systems DO NOT PLUG THE TEMPERATURE PRESSURE RELIEF VALVE OPENING THIS CAN CAUSE PROPERTY DAMAGE SERIOUS INJURY OR DEATH AWARNING e Temperature Pressure Relief Valve must comply with ANSI Z21 22 CSA 4 4 and ASME code e Properly sized temperature pressure relief valve must be installed in opening provided e Can result in overheating and excessive tank pressure e Can cause serious injury or death DRAINING AND FLUSHING It is recommended that the water heater storage tank
176. ature Pressure Relief Valve is to prevent excessive temperatures and pressures in the storage tank The T amp P valve is not intended for the constant relief of thermal expansion A properly sized thermal expansion tank must be installed on all closed systems to control thermal expansion see Closed Water Systems and Thermal Expansion on Page 21 If you do not understand these instructions or have any questions regarding the Temperature Pressure Relief Valve call the toll free number listed on the back cover of this manual for technical assistance CONDENSATE PIPING This water heater is a condensing unit and requires a drain to be located in close proximity to allow the condensate to drain safely The condensate drains from the unit at the exhaust tee located at the bottom of the unit see Figure 12 Condensate from this water heater is mildly acidic Please note that some local codes require that condensate is treated by using a pH neutralizing filter prior to disposal Caution must be used to ensure that the drain is free and clear of debris and will not allow backflow through the condensate hose Consideration must be given to avoid freezing of the condensate lines which could result in excessive build up of condensate inside the water heater Waterproof heat tape may be required to prevent freezing of the condensate lines Please ensure that the outlet of the condensate drain does not create a slippery condition which could lead to person
177. aust ISVLO3 amp IASPPO3 for Exhaust 7 IAFCO3 IANSO3 ISELLO387 ISVLO3 ISELLO387 amp IASPPO3 for Intake Direct Vent only VENT PIPE TERMINATION The first step is to determine where the vent pipe will terminate See Figures 13 Figure 14A and Figure 15 The vent may terminate through a sidewall as shown in Figure 13 and Figure 15 or through the roof as shown in Figure 16 and Figure 17 The vent system must terminate so that proper clearances are maintained as cited in local codes or the current edition of the National Fuel Gas Code ANSI Z223 1 12 9 1 through 12 9 4 or the Natural Gas and Propane Installation Code CAN CSA B149 1 See Figure 16 and Figure 17 Instructions on proper installation through a sidewall are provided in Figures 13 Figure 14A and Figure 15 Plan the vent system layout so that proper clearances are maintained from plumbing and wiring Vent pipes serving power vented water heaters are classified by building codes as vent connectors Required clearances from combustible materials must be provided in accordance with information in this manual under FACTS TO CONSIDER ABOUT LOCATION and INSTALLING THE WATER HEATER and with the National Fuel Gas Code and local codes PLANNING THE VENT SYSTEM Plan the route of the vent system from the exhaust elbow to the planned location of the vent terminal 1 Layout total vent system to use a minimum of v
178. be taken to insure that gas pressures are stable and fall within the requirements stated on the water heater rating plate Readings should be taken with all gas burning equipment off static pressure and with all gas burning equipment running at maximum rate dynamic pressure The gas supply pressure must be stable within 1 5 W C from static to dynamic pressure to provide good performance Pressure drops that exceed 1 5 W C may cause rough starting noisy combustion or nuisance outages Increases or spikes in static pressure during off cycles may cause failure to ignite or in severe cases damage to water heater gas control valves If your low pressure system does NOT meet these requirements the installer is responsible for the corrections High Pressure building supply systems use pressures that exceed 14 W C 1 2 PSI Gauge These systems must use field supplied regulators to lower the gas pressure to less than 14 W C 1 2 PSI Gauge Appliances require gas regulators that are properly sized for the water heater input and deliver the rating plate specified pressures Gas supply systems where pressure exceeds 5 PSI often require multiple regulators to achieve desired pressures Systems in excess of 5 PSI building pressure should be designed by gas delivery professionals for best performance Water heaters connected to gas supply systems that exceed 14 W C 1 2 PSI Gauge at any time must be equipped with a gas supply regulator GAS
179. cal distance between these two terminals is recommended EXHAUST VENT AIR INTAKE TERMINAL 24 MIN TERMINAL Figure 14A INSTALLATION SEQUENCE 1 After the points of termination have been determined use the cover plates as templates to mark the holes for the vent pipes to be inserted through the wall BEWARE OF CONCEALED WIRING AND PIPING INSIDE OF WALL If the vent terminals are being installed on the outside of a finished wall it may be easier to mark both the inside and outside wall Align the holesby drilling a hole through the center of the template from the inside through to the outside The template can now be positioned on the outside wall using the drilled holes as a centering point for the template A MASONRY SIDE WALLS Chisel an opening approximately 1 2 1 3 cm larger than the marked circle 27 B VVOODEN SIDE VVALLS Drill a pilot hole approximately one quarter inch outside of the marked circle This pilot hole is used as a starting point for a savvs all or sabre savv blade Cut around the marked circle staying approximately one quarter inch outside of the line This vvill allovv the vent pipe to easily slide through the opening The resulting gap vvill be covered by the vent terminal cover plates Repeat this step on the inside vvall if necessary Cut a length of pipe about 3 5 8 9 cm longer than the wall thickness at the opening Glue the air intake terminal to the section of the pipe
180. cally notify selected personnel via email and or cellular phone text messages if operational problems or user defined Alert Conditions occur iCOMM system hardware is compatible with BACnet compliant supervisory controls and building management systems For more information call 888 928 3702 PREPARING FOR THE INSTALLATION 1 Read the entire manual before attempting to install or operate the water heater Pay close attention to the General Safety Information on Page 4 thru Page 6 If you don t follow the safety rules the water heater may not operate safely It could cause property damage injury and or death This manual contains instructions for the installation operation and maintenance of the water heater It also contains warnings throughout the manual that you must read and be aware of All warnings and all instructions are essential to the proper operation of the water heater and your safety Detailed installation diagrams are also found in this manual These diagrams will serve to provide the installer with a reference It is essential that all venting water piping gas piping and wiring be installed as shown Particular attention should be given to the installation of thermometers at the locations indicated in the piping diagrams as these are necessary for checking the operation of the water heater The principal components of the water heater are identified in Features And Components on Page10 amp Page 11 in this manu
181. ctric unions or couplings be installed on this water heater when connected to copper pipe see Figure 11 also HOT WATER OUTLET COLD WATER INLET SHUTOFF VALVE Zi en 4 uU SWEAT FITTINGS b TEMPERATURE PRESSURE RELIEF VALVE Figure 11 Figure 10 and Figure 11 show the typical attachment of the water piping to the water heater The water heater is equipped with 3 4 inch NPT water connections for 50 gallon unit and 1 inch NPT water connections for 75 gallon unit NOTE If using copper tubing solder tubing to an adapter before attaching the adapter to the water heater connections Do not solder the water lines directly to the water heater connections It will harm the dip tube and damage the tank T amp P Valve and Pipe Insulation if supplied Fit pipe insulation over the incoming cold water line and the hot water line Make sure that the insulation is against the top cover of the heater Fit T amp P valve insulation over valve Make sure that the insulation does not interfere with the lever of the T amp P valve Secure all insulation using tape TEMPERATURE PRESSURE RELIEF VALVE This water heater is provided with a properly rated sized and certified combination Temperature Pressure Relief Valve T amp P relief valve by the manufacturer The valve is certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment of materials as
182. d also cause standby loss requirements making an insulation blanket unnecessary product failure l Should you choose to apply an insulation blanket to this heater you should follow these instructions For identification of components mentioned below see Figure 1B 50 GALLON UNIT amp Figure 1C 75 GALLON UNIT Failure to follow these instructions can restrict the air flow required for proper combustion potentially resulting in fire asphyxiation serious personal injury or death 15 UNCONFINED SPACE An Unconfined Space is one whose volume IS NOT LESS THAN 50 cubic feet per 1 000 Btu hr 4 8 cubic meters per kW of the total input rating of all appliances installed in the space Rooms communicating directly with the space in which the appliances are installed through openings not furnished with doors are considered a part of the unconfined space Makeup air requirements for the operation of exhaust fans kitchen ventilation systems clothes dryers and fireplaces shall also be considered in determining the adequacy of a space to provide combustion ventilation and dilution air UNUSUALLY TIGHT CONSTRUCTION In unconfined spaces in buildings infiltration may be adequate to provide air for combustion ventilation and dilution of flue gases However in buildings of unusually tight construction for example weather stripping heavily insulated caulked vapor barrier etc additional air must be provided using the meth
183. d installer or qualified service technician see Page 7 All precautions in the literature on tags and labels attached to the unit must be observed Follow all safety codes Wear safety glasses and work gloves 4 DIAMETER SDR 26 PIPE 2 DIAMETER CAP SDR 26 PIPE Y CONCENTRIC FITTING 3 DIAME TER PVC VEHTIERXHAUST 21 1 8 3 DIAMETER IHTAKEjCOMBLSTIOM AIR sip Figure 26 Dimension 21 1 8 in may be lengthened to 60 in maximum Dimension 21 1 8 in may also be shortened by cutting the pipes provided in the kit to 12 in minimum Dimension 39 will change accordingly as dimension 21 1 8 in is lengthened or shortened Do not use field supplied couplings to extend pipes Airflow restriction will occur and the heater pressure switch may cause intermittent operation INSTALLATION VERTICAL ROOF TERMINATION 1 Determine best location for termination kit NOTE Roof termination is preferred since it is less susceptible to damage has reduced chances to intake contaminants and less visible vent vapors 2 Cut 1 hole 5 in diameter 3 Partially assemble concentric vent termination kit a Cement Y concentric fitting to larger diameter kit pipe see Figure 25 b Cementrain cap to smaller diameter kit pipe see Figure 27 DRILL CLEARANCE HOLE IN RAIN CAP AND PILOT HOLE IN VENT PIPE STAINLESS STEEL SCREW FIELD SUPPLIED Figure 27 NOTE Instead of cementing the smaller pipe to
184. d tank from corrosion Adverse water quality hotter water temperatures high hot water usage hydronic heating devices and water softening methods can increase the rate of anode rod depletion Once the anode rod is depleted the tank will start to corrode eventually developing a leak 47 Certain water conditions will cause a reaction between the anode rod and the water The most common complaint associated with the anode rod is a rotten egg smell produced from the presence of hydrogen sulfide gas dissolved in the water IMPORTANT Do not remove this rod permanently as it will void any warranties A special anode rod may be available if water odor or discoloration occurs NOTE This rod may reduce but not eliminate water odor problems The water supply system may require special filtration equipment from a water conditioning company to successfully eliminate all water odor problems Artificially softened water is exceedingly corrosive because the process substitutes sodium ions for magnesium and calcium ions The use of a water softener may decrease the life of the water heater tank The anode rod should be inspected after a maximum of three years and annually thereafter until the condition of the anode rod dictates its replacement NOTE artificially softened water requires the anode rod to be inspected annually The following are typical but not all signs of a depleted anode rod The majority of the rods diameter is less than
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189. e enb zuene jediouud S Q ees JNO sJo Jejpeuuooep Jn9 DJQ l SI9A Jo no99 s ZE ne eDeuun e p eouenbos S op Ue e S L S SNO Joyonbn3 e op uoneJoy e eun s ule nu Jie unod los eo nb uo5ej nbj nb q op eDejqeo np non nee ejneuo s lonuo sep UOUEISIE 9jno e enueAe uou je l nu IeJedde ep enueje6 e eypuoJ eDej qeo np no je nee ejjneuo ep S9 oJiuoo sep uomne49jje no uoneAuop no e e91AJ8S JNO 1 p9901d ep jueAe nee ejineuo ne uonejueull e JOdNOD e eau enueJef e Jed eyeAnoo sed jse u je qiSI A u eJelueuJ op nes ajneyo e no s l nuo s l JeDeuuulopue jreunod 105 nb uo5eJ nbu l 3042 op n ber enbjenb abejqeo np non ep s lo uoo sep uoneJoeye no e i eudoudde s ep un juesi nn llenb eorujes 1ueBe un sed nb enjosjje OP eu jnO e L N 3 IN E SSILa AV 4011 HOA S 1odio2 s inss lq s p S 19 euu sjeDop sap Jeujejjue n d e oujuoo sojuesoduioo s p no sjinouro s p Jonge LN E IN E SS La JAV w UonenoeAe p UleJP sues nea yneyo e J e su sed N e Son 1 u s id jueAned nee ejineuo S sno e lAH S JNO je uone jejsui Jnod ailes S 9H9jeul sebewwop 9p enbsiy uusliueBio un no lilenb aneje jejsul un e uonej ejsui juepued 266 ep s linpuo s Jedno e NOLLN Jll V HOUU
190. e number and press the Operational Button under UPDATE to save the new phone number When the new Contact Name and Contact Phone number have both been updated press the Operational Button under BACK to return to the Desktop screen 45 Service Contact Information Show Contact Information Change Contact Name Change Contact Phone Current Contact Info 000 000 0000 Access Code CHANGE BACK Service Contact Information Show Contact Information Change Contact Name Change Contact Phone Current Contact Info 000 000 0000 Access Code UPDATE h CANCEL Service Contact Information Show Contact Information Yes Change Contact Name Change Contact Phone Current Contact Info 000 000 0000 Access Code SELECT Enter the service contact below Use the gt and lt keys to move between characters Use the UP and DOWN keys to change the character NAME _ lt gt UPDATE Service Contact Information Show Contact Information Change Contact Name Change Contact Phone Current Contact Info YOUR COMPANY NAME HERE 123 456 7890 Access Code FOR YOUR INFORMATION START UP CONDITIONS SMOKE ODOR It is not uncommon to experience a small amount of smoke and odor during the initial start up This is due to burning off of oil from metal parts and will disappear in a short while THERMAL EXPANSION CAUTION in property damage Avoid water heater damage e Install thermal expansio
191. e from the Temperature Probe Tank Probe Offset adjustable user setting range 5 to 5 F factory setting O F The Tank Probe Offset is used to calibrate control system temperature sensing This offsets to more effectively read point of use temperature in the tank This feature can also be Temperatures Operating Set Point Differential Tank Temperature Tank Probe Offset used to compensate for building recirculation loops hot water returning to the storage tank that may cause the heating cycles to terminate prematurely 4 ph Example Ifthe current sensed temperature from the temperature probe is 120 F 49 C and the Offset setting for the probe is adjusted to a value other than 0 the control system would calibrate or offset the sensed temperature from the probe Heating cycles would be activated and deactivated based on the calibrated offset temperature NOTE The Tank Probe Offset should only be used if the hot water supply temperature varies greatly from the Operating Set Point setting These settings are adjusted in the same way described for the Operating Set Point and Differential Adjustment HEATER STATUS DESCRIPTION ACTION DISPLAY Select Heater Status from the Main Menu and press the Operational Button under SELECT to enter this menu This menu contains non adjustable operational information Use the Up amp Down Buttons to navigate the menu CHANGE Heater Status Status ECO Cont
192. e installed per the manufacturer s instructions in the potable hot water supply to limit the risk of scald injury Pumps valves piping and fittings must be compatible with potable water A properly installed flow control valve is required to prevent thermosiphoning Thermosiphoning is the result of a continuous flow of water through the air handler circuit during the off cycle Weeping blow off of the temperature and pressure relief valve T amp P relief valve or higher than normal water temperatures are the first signs of thermosiphoning The hot water line from the water heater should be vertical past any mixing valve or supply line to the heating system to remove air bubbles from the system Do not connect the water heater to any system or components previously used with non potable water heating appliances when used to supply potable water These water heaters cannot be used in space heating applications only TYPICAL MIXING VALVE INSTALLATION COMBINATION SPACE HEATING POTABLE WATER HEATING SYSTEM EXPANSION TANK COLD WATER INLET CHECK VALVE SHUT OFF VALVE TEMPERED WATER gt 1 8 H DRILLED IN CLAPPER TO FIXTURES MUST BE VERTICAL TO REMOVE AIR BUBBLES I ID MIXING VALVE Edi MUST BE INSTALLED BELOW TOP OF WATER HEATER AS PERMANUFACTURER S RECOMMENDATIONS t PIPING FROM THE TOP OF THE WATER HEATER WITH TEES IS ACCEPTABLE Figure 10 CLOSED WATER SYSTEMS Water supply systems may b
193. e module will display the default screen known as the Desktop screen 2 Ifthe control system determines thatthe actual water temperature inside the tank is below the programmed Operating Set Point minus the Differential setting a heating cycle is activated 3 The control system then performs selected diagnostic system checks This includes confirming the blocked exhaust blocked intake and ECO energy cut out switch contacts are closed The Blower Prover Switch contacts are confirmed open 4 If all diagnostic checks are successfully passed the control system energizes the Combustion Blower for pre purge 5 The control system must confirm the Blower Prover Switch contacts close after the Combustion Blower is energized 6 If the Blower Prover Switch contacts are confirmed closed the control system energizes the spark igniter T After afew seconds the control system energizes the 24V Gas Control Valve allowing gas to flow to the Main Burner 8 The control system de energizes the spark igniter 9 The control system monitors the flame sensor to confirm a flame is present at the Main Burner If a flame is not verified during the ignition trial period the control system will try for ignition up to two more times If flame can not be verified after three trials for ignition the control system will lock out and display the Ignition Failure Fault message 10 If a flame is verified the control system will enter the heating mode w
194. e oeouepuej end juo seuuosjged seureuoeo Lk 02 Oo LL ep wnwxew un p nes ajjneyo np ep Jessedop uomesi nn p juiod ne 4u An d epneuo suonesi nn s m d ap sed sosneo sunoo s l d i eDejneuo ap sajoAo seq Joejuod ajdwis uns S QISH A LI seunsse q sep JONDOAOJ 1e Jepneuoo 1ned Be oll u op ulos q mne 1no e 1e l SS PA ej e6e e ne sjuaula ogA sop ofpAp ne ejpueliAuoo inb eJnjejeduie eun e eojneuo S IBNUES s ioyedde s p neoAiu ne JeBuep sues seJnjeJoduJe s p JoJnsse Inod je s po sot Jed sinboJ nb f s lle sul 9419 JUBAIOP suneBue ouJ nb sje eunje1eduue ep sunejiuui seq aunioyg euonop eun anvHo no uleq un ep jueAe nee 19 s bu e Jed seunsse q 0 xne se qndeosns snid s l 405 sej ejueuJ senbis ud seedeoipueu seuuosued s l s Be seuuosiJed s sjuejue s HOW El seunsso q ue jueuiguejuejsur juejnsoJ seJn pnuq Jenbo oud 1ueAned 4 GZL ZS e soJnonoedns ne p seq nee ejneuo np uore eisul S10 uomneJopisuoo ue sud H JUBAIOP je enbuiosjo euiBuo p sejseJed So JUBANOS 1 soasi eroods sanejouoflsip S 1 8419 R SIU op se qeo s l sesieioeds uonejueulje p so qeo se sasivioads NOILVIN3WITV d SH
195. e printed instructions provided with it and good industry practices In addition a temperature and pressure relief valve certified by CSA and approved by the American Society of Mechanical Engineers must have been installed a This warranty shall apply only when the water heater is 1 owned by the original purchaser 2 used at temperatures not exceeding the maximum setting of its thermostat 3 used at water pressure not exceeding the working pressure shown on the heater 4 used when operated free of the damaging effects of uncontrolled water hammer 5 used when filled with potable water free to circulate at all times 6 used in a non corrosive and non contaminated atmosphere 7 used with factory approved anode rod s installed 8 in its original installation location 9 in the United States its territories or possessions and Canada 10 sized in accordance with proper sizing techniques for commercial water heaters 11 bearing a rating plate which has not been altered defaced or removed except as required by the warrantor 12 fired at the factory rated input using the fuel stated on the rating plate 13 maintained in accordance with the instructions printed in the manual included with the water heater b Any accident to the water heater any misuse abuse including freezing or alteration of it any operation of it in a modified form or any attempt to repair tank leaks will void this warranty c Thi backfl connected to
196. e s uuosi d sjuejua s l z uo end js9 seunjuq nbsu o S9 ououi no S ABID 5 5 saunssajq s p 1esneo m d 3 921 O ZS e m u dns oeunjejeduia eun e CERIANA hi nV3 d 53 s lilepouu se Anod EI JIOA eAISOJJOO 9 eun g enp neo ojyneuo eoue iejop ep seo ue eojnuue s enueJef e Gouejsip e no euJajxe 9 eun p euiule uoo uou JIe Jlu9 qo Ine euressoeoou IS senbiuiugo syinpoid seo ep unone uu luo5 yop eu Spuneu l 2o e 9e uoo ue inb ue issny nea ejyneuo np e ed ep s sod nu sed N SJIS04109 1 jueAnod SenbidA sosodujoo sep uos jueulejJg ep senbiuiuo sjinpoud je sa neo p unessionope s uinipos uunio eo ep eurosid p anod senbiuuiuo sinpojd euuonipuoo 1e inod s pini sjueJoDujoJ ofpAouau siueAos OSOJ9e P sunes ndoud eo eix udse p enbsu un 1e seoue ejop s p Jenbo oJd ep enbsu 01901100 ll un senbiuiuo sinedeA SOUICLI9O juanuoo uornsnquiJoo ep JIe Is eJinpoud es 1ned UOHE U A op euleis s np je eeuimueuo ep sinpuoo s p uoisoJoo EI S3nO0INIHO SHNAdVA 530 NOISOHHOO God 001 zw Sp9 e n 1ned eu nbeu lui ou suep 59 61
197. eater is extremely important to your safety and the safety of others Many safety related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard Read and obey all safety messages and instructions throughout this manual It is very important that the meaning of each safety message is understood by you and others who install use or service this water heater This is the safety alert symbol It is used to alert you to potential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death DANGER indicates an imminently 25 mem WARNING indicates a potentially hazardous situation which if not avoided could result in injury or death CAUTION Indicates a potentially hazardous TU CAUTION used without the safety alert EE property damage All safety messages will generally tell you about the type of hazard what can happen if you do not follow the safety message and how to avoid the risk of injury APPROVALS lie Aa O CERTIFIED UL i www ahridirectory org CERTIFIED WATER QUALITY Low Lead Content GENERAL SAFETY INFORMATION PRECAUTIONS DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN UNDER WATER Immediately call a qualified service agency to inspect the water heater and to make a determination on what steps should be taken next If the unit is exposed to the fol
198. ecause of code requirements or such conditions as high line pressure among others have installed devices such as pressure reducing valves check valves and back flow preventers Devices such as these cause the water system to be a closed system 21 THERMAL EXPANSION As water is heated it expands thermal expansion In a closed system the volume of water will grow when it is heated As the volume of water grows there will be a corresponding increase in water pressure due to thermal expansion Thermal expansion can cause premature tank failure leakage This type of failure is not covered under the limited warranty Thermal expansion can also cause intermittent temperature pressure relief valve operation water discharged from the valve due to excessive pressure build up This condition is not covered under the limited warranty The temperature pressure relief valve is not intended for the constant relief of thermal expansion A properly sized thermal expansion tank should be installed on all closed systems to control the harmful effects of thermal expansion Contact a local plumbing service agency to have a thermal expansion tank installed CAUTION e Avoid water heater damage e Install thermal expansion tank if necessary e Do not apply heat to cold water inlet Contact qualified installer or service agency NOTE To protect against untimely corrosion of hot and cold water fittings itis strongly recommended that di ele
199. econds and then release it This will launch a discrete menu where personalized contact information can be entered Using the UP and DOWN buttons select highlighted in black the Show Contact Information menu item Press the Operational Button under CHANGE to activate the adjustment mode for this parameter With the adjustment mode for Show Contact Information activated the selection bar will change from a black fill to a black outline Use the Up and Down Buttons to change the setting from No to Yes and press the Operational Button underneath UPDATE to save the new setting NOTE The Access Code at the bottom of the Service Contact Information screen is for manufacturing purposes only There are no user settings or information accessed through this menu item Using the UP and DOWN buttons select highlighted in black the Change Contact Name menu item Press the Operational Button under SELECT to open the Change Contact Name menu Follow the on screen instructions to enter your name or the name of your company There is a maximum of 20 character spaces for this purpose When finished press the Operational Button UPDATE to save the new Contact Name The control system will return to the discrete menu Using the UP and DOWN buttons select highlighted in black the Change Contact Phone menu item and press the Operational Button under SELECT Follow the on screen instructions to enter a new Contact Phon
200. ed anbijsia oesed m omas l suep uonesi nn p juiod ne e end uo ej o jnod su duloo euigjs s np ep uomnoejop e 0 JOSHO eqoJ4g xueyr J9Jqi eo anod sosi nn 1uos 110 5 np epuos ej sefej eoop seq 021 yue 8 0 ep euisn ue JENUSIO IC o Gt G ep eneuounoj n yesilmn i red lqel5 i 41 0 JUIOd 18S BuneJedo ttoA49s 1 np epuos eDejeooq lt 198540 qold ULL gt o ejnje19duue ep epuos e op Jed e epueuluJoo ep euigis S 9 Jed eJnjeJoduuel o qej698J uou 110AJeSo1 np lt eunjejeduio xueJ gt 1 4 NOILOV NOILdlH2OS3G 9119 534 1 LV 1 3 4 1 040 ep ul s S 5109 s l suep solle 1nejesi nn p Seujauesed sane sol 19 auaa l s bucu ej 1951 1 1 FNOYUVINAY 5 jueuje qe eoud ne uaa 19 51 s l 1140 9 jnod uajnuue 1742NV gt snos JBSHO eqoJg xue uolnoq l INS 1e nddy eujgurejyed mod nof e slli lt gt snos ouuormeJodo uoinog e ins Je ndd
201. el No Serial No Dealer s Name Phone No Dealer s Address City and State Zip Code FILL IN WARRANTY AND KEEP FOR FUTURE REFERENCE Ye Smith www hotwater com 500 Tennessee Waltz Parkway Ashland City TN 37015 Tech Support 800 527 1953 Parts 800 433 2545 Copyright 2014 A O Smith Corporation All rights reserved 5 sno uone40d0402 ullus V 02 luBu doo 792 267 008 S808 d 2961 29 008 u nnos GLOZE NL A puejusy Jup zijeM eesseuue 00G UIO9 1I9 EMJOU MMM IUS se 49N4444344 34 1 4 5 L3 3ILNVHVO V1 4 Jeisod SOUIAOIC 19 JIA eJreuuoisseouoo np esseJpy uoud 81 ep ON eJreuuoisseouoo np WON H S ep ON ON ayeq ne lineu np enbnoejeuDis onbed ej ins 1ueAnoJ S u s op ol uunu 19 97 enueJe6 ep uonipuoo eun sed sou 1ueujaJuisiDoJuo 009 97 ejJ uuosJed eouaJ9jaJ ep ej e 1119 inb due egne eun e uonoipunf eun p zuanean inb syoJp seJine p 2 SNOA nb ynad es senbyioeds syioJp sep SNOA enueJeb6 e7 q 980 jueujeouoo SNOA eu Snssop I suolsniox no suoneliuul s anb qissod s sjpnoesuoo no saJiosseooe ep uomeiuui e no uoisnjoxe sed juegeuued eu suoroipunf seureuie e S nor no STANLOVELNOOD LNAIOS SILNO SLOAYIGNI n
202. enb jeunsse s zef ep einpuoo e 4 UOEHE D 1UEAV uoiso dxe eun no eipueoui un yeJunod inb 266 ep jnejejn698J np 1ueujeuuonouo sreAneuJ un Jasneo juereunod 286 s linpuo s suep sjueuiulejuoo se q OO UOITEJUBWIPES ep 260 un 1 euiuJoo nuuoo81 jnisodsip nne un no seq l Jed eDuepiA op eueDJo suep sue un UD p 4022E UN yos 9119 penap uonejueuiipas oeq 37 nee ejneuo np UOUEIEISUL jueuiou ne ne uneu np ze5 np epouiuloo enb euooJud seng o eisu ag jejAep uonejueuilpes ep Seq UN L 6VLE VSO UBD no pSvddN 8 1 eDund luiod un jej eisu uome E1Sul jueAe zef s linpuo s sno Uoiso dxe eun no lpu oul un Jesneo 1ueAned zef ep s linpuo se suep 1ueAnoJ es inb sjueuiuiejuoo s uoiso dxe p eipuoeoui p nbsiu 1N3IW3SSI1H3AV i d NOILVLNAWIGAS 3G SOV8 egJue p enbiyuo eo 1iq p ne sHhewnye un ejeuued inb ll s nbi j euBis enbejd e ins JUeINBY uorssiupe p ze ep uoissaJd e Jd euedoud 286 1e 266 e inod 4 0 od rt egy GC ep Jessedop sed pop eu uoissiupe p ze6 op uoissoJd g7 uonsenb ue np enbnoejeuDis nbeid ej ins enbipui in nb d4 w w np 199 IuunoJ 266 enb 1eJnsse S 2 3d ALINGNOD SD 89 61 s ovt 09 OE zz os OLN Z y
203. ent pipe and elbows 2 This water heater is capable of venting flue gases in equivalent feet of pipe as listed in Table 7 Table 7 Number of 2 Maximum 3 Maximum 90 Elbows Pipe ft m Pipe ft m 1 25 7 20 6 6 09 100 30 48 4 57 95 28 95 The minimum vent length for each of the pipe size is one 90 elbow plus 2 and 7 0 61 m and 2 1 m of straight pipe for air intake and exhaust vent respectively and the appropriate termination 0 5 0 0 15 NOTE The equivalent feet m of pipe listed above are exclusive of the termination That is the termination with an installed screen is assumed to be in the system and the remainder of the system must not exceed the lengths and number of elbows shown in Table 7 If using 2 inch vent pipe A 2 diameter vent pipe must be inserted and glued to the exhaust elbow assembly If using 3 inch vent pipe Two inches 5 1cm of 2 diameter pipe must be inserted and glued to the exhaust elbow assembly before adding a 2 x 3 reducer to acquire the desired pipe diameter A 3 coupling Supplied locally a schedule 40 DWV vent terminal must be obtained A 3 diameter screen is supplied in the vent kit 26 INSTALLATION OF HORIZONTAL THROUGH THE WALL VENT SYSTEM If you are installing your system so that it vents through roof please refer to section titled VERTICAL VENT TERMINAL INSTALLATION VENT TERMINAL INSTALLATION SIDEWALL
204. eoo q ep suneje n69J sop enb s 266 uomnejueulu e p euigis s eulgul l suep nee ejneuo sin isnid ep uornej ejsur S107 e qeis 286 uonelu uue p uoisseJd eun Ji uejureuJ Anod pie end emba n 1ueAned seurejueuio ddns sjueuiejsnfe 0c suleH nee ejineuo np jueuieuuorouo uoq un 1 4 eJluJnoJ 19 eopueuluio29J s uonejoedo ue 1S nee ojneuo l enbsJo 1d euedoud inod 4 9 od 0 4 eg yZ ep 1e jainyeu 286 e mod 3 9 od 2 Bd pz ep ejeniur uonejueuu e p uoisseud ep un ejqejinouosA Jjnisod 286 uolss ld suneje n6oJ sot no 9 9 eisui 104e sejJdy ne Hneu np uonejueule p ze6 ep uolx uuo EI ep id g w bz enb uo snid sed id g ui enb said end sed so eisui 140 5 ze6 op uoisseJd e Joep no ep sinejejnOaJ s no 97 Z juejueuume SL nb nee ejneuo np y nig enbijuo eo ne jneuedns no eD9 euiuou un JIOAe 10 AlOD 286 uoisseJd ej Joe no e6eoojq ep sin tleinS l seq SUOIONIJSUI S 8JAins sinboJ1se jisod un IS ueouqe np suormeoiioeds s l uojes gesin 1o UOISUBLUIP euuog e ep ae JUBAIOP suneje n69J se7 jueujoui no e 4 0 od v1 edy S e 1essedop 1ned ze6 ap nu p uoissauJd e Is 286 ue uonejueuuje p ne4n e suep jueujeDeDue sed e qe iinou9A zeb op uoissaJd ep un
205. er Loose or open wiring to the Blower Prover Switch Blower Prover Switch air sensing tube disconnected kinked filed with condensate damaged or leaking repair or replace tube Combustion Blower is not running when energized Loose or open wiring to Combustion Blower The control system has detected the Blocked Intake Air Switch contacts are open Loose or open wiring to the Blocked Intake Air Switch Excessive equivalent pipe length exceeded the maximum number of 90 elbows or wrong pipe size used in the intake air piping system Excessive negative air pressure in the installed space The control system has detected the ECO energy cut out Switch contacts are open The ECO switch is a normally closed switch that opens on a temperature rise to prevent excessive water temperature in the storage tank The ECO switch is inside the Temperature Probe two red wires Loose or open wiring to the ECO switch in the Temperature Probe two red wires The control system has not detected any voltage from the powered anode rod No water in the storage tank Loose or open wiring connections to the powered anode rod Powered anode rod wiring shorted to ground The water heater is not properly grounded Loose or open ground wires Top fitting 3 4 inch bushing of the powered anode rod was saturated with water during installation with power to the water heater turned off carefully remove anode rod and dry out bushing s
206. es uoimneJjo ooop e no ne Jnepo IS ejgqiuodsip 3149 Ined e eioods epoue p un enueJeD lno1 eJe nuue el Ieo ejueueuued eJerueu of H sed N NVLHOdWI nea suep snossip euefoup u p eJunjns np eouesagud ej 160 ejnpoJd epneuo nes suep lt unod in o p in po gt eun is epoue p e e jueuioAne oJ snid e ejurejd e7 neoe 19 opoue p e nu uonoeo eun nboaAoid nee ep suonipuoo seureuo lini eun jueuje jenjueAo eJjenboAoud inb es g eA l euAnedde opoue p abi e SIO oun epoue e ep 1ueujessuAnedde p LV xng l jueAned nee 1lu ui ssionope p s pou uu S 1e epneuo nee e oDejjneuo sjiasedde s epneuo UOIJELULUOSUOD epueJ6 end eun epneuo end nea ep aunyessdwa e ejqeJisopui nee ep lijenb e7 401801100 El 8 Jop ue 110 l 1 ue nee ajneuo np ei ep eounp e JeBuojoud mod es jouioe o uosieJ uo lu uu lu 1uAnedde s inb epoue p eun suloul ne juenuoo ne uneu nbeuo sinboJ epoue p e ep jueuieoe duuoaJ 1e uonoedsu nee ejneuo ne sebewwop S NOLLN3LLV 340 0 ADIL V1 AG NOILO3dSNI ne uneu Jesi n p JONUIJUOD ep UOHE U A ep euleis s NO eauunj ep 1inpuoo 9 JeoejduiaJ no je ojeu 19
207. ets after extended periods of non use AWARN N E Read instruction manual before Use joint compound or Teflon tape installing using or servicing compatible with propane gas water heater Leak test before placing the water heater in operation Disconnect gas piping and main gas shutoff valve before leak A WARNING Ke Install sediment trap in d ith NFPA 54 Breathing Hazard Carbon Monoxide Gas 77777 s e Do not obstruct water heater air intake with insulating blanket e Gas and carbon monoxide detectors AWARN N E are available Fire and Explosion Hazard e nstall water heater in accordance with the instruction manual e Do not use water heater with any gas Breathing carbon monoxide can cause brain damage or other than the gas shown on the rating death Always read and understand instruction manual plate Excessive gas pressure to gas valve can cause serious injury or death CAUTION e Turn off gas lines during installation e Contact a qualified installer or service Property Damage Hazard agency for installation and service e All water heaters eventually leak e Do not install without adequate drainage AWARN N G Jumping out control circuits or components can result in property damage personal injury or death e Service should only be performed by a qualified service A WARN 1 N G agent using proper test equipment R Altering the water heater controls and or wiring in any way Electrical Shock
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210. gap between the pipe and wall Place some of the caulking on the back of the plate to hold it against the wall after installation If the vent pipe is installed up to the wall with a coupling on the end against the wall opening the pipe with the vent terminal can be prepared for gluing before inserting through the wall Slide the pipe through the wall and insert into the coupling on the other side of the wall making sure that the vent terminal ends up pointed in the correct position see Figure 13 MORTAR OR WALL PLATE SILICONE m OPTIONAL vu VENT TERMINAL WITH SCREEN FROM WATER HEATER 1 FOOT MIN PVC OUTSIDE OF COUPLING BUILDING WALL Figure 13 VENT TERMINATION DIRECT VENT TERMINAL INSTALLATION The air intake provided on the unit contains an air intake screen to prevent large particles from entering the unit Air Intake Screen Figure 14 AIR INTAKE SCREEN When the unit is to be setup as a direct vent the air intake screen must be removed The air intake pipe may then be glued to the air intake see Figure 14 provided on the unit This unit consists of two terminals an air intake terminal and an exhaust vent terminal The air intake terminal is a 2 90 pvc elbow with an air intake screen and the exhaust vent terminal is a 2 straight pvc coupling with a mesh wire screen Note to prevent exhausting products from circulating to the air intake in windy cold areas the maximum practi
211. h duct opening shall have a minimum free area of 1 square inch per 2 000 Btu hr 1100 mm per kW of the aggregate input rating of all appliances installed in the enclosure When ducts are used they shall be of the same cross sectional area as the free area of the openings to which they connect The minimum dimension of rectangular air ducts shall be not less than 3 inches 17 AIR FROM OTHER INDOOR SPACES Figure 8 The confined space shall be provided with two permanent Openings one commencing within 12 inches 300 mm of the top and one commencing within 12 inches 300 mm of the bottom of the enclosure See Figure 8 Each opening shall communicate directly with an additional room s of sufficient volume so that the combined volume of all spaces meets the criteria for an Unconfined Space Each opening shall have a minimum free area of 1 square inch per 1 000 Btu hr 2200 mm per kW of the aggregate input rating of all appliances installed in the enclosure Each opening shall not be less than 100 square inches 645 cm INSTALLATION REQUIREMENTS A WARNING CHEMICAL VAPOR CORROSION Corrosion of the flueways and vent system may occur if air for combustion contains certain chemical vapors Such corrosion may result in failure and risk of asphyxiation Spray can propellants cleaning solvents refrigerator and air conditioning refrigerants swimming pool chemicals calcium and sodium chloride water softener salt waxes
212. he Temperatures menu is not selected use the Up and Down Buttons to select this menu item SELECT VVith the Operating Set Point selected in the Temperatures menu press the Operational Button underneath CHANGE to activate the adiustment mode for this menu item Operating Set Point 120 Differential 8 If Operating Set Point is not selected use the Up and Down Tank Temperature 120 Buttons to select this menu item Tank Probe Offset 0 Temperatures o o NOTE Higher Temperature settings increase vvear and operating costs Set the Operating Set Point to the lovvest setting which produces an acceptable hot water supply This will always provide the most energy efficient operation and HANGE longer life SY With the adjustment mode for the Operating Set Point activated Temperatures the selection bar will change from a black fill to a black outline Operating Set Point Use the Up and Down Buttons to change the current setting Differential P the O tional Butt der UPDATE t th 17111 ress the Operational Button under O save the Tank Probe Offset new setting Press the Operational Button under CANCEL to discard changes and return to the previously saved setting NOTE Use this same procedure to change the Differential setting and other adjustable user settings in the control system menus 41 TEMPERATURES CONT DESCRIPTION ACTION DISPLAY Tank Temperature non adjustable control system sensed temperatur
213. heater and is not covered under the limited warranty Altering the water heater controls and or wiring in any way could result in altering the ignition sequence allowing gas to flow to the main burner before activation of the igniter which can cause a fire or explosion Any bypass or alteration of the water heater controls and or wiring will result in voiding the appliance warranty FAULT AND ALERT MESSAGES Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service technician in your area POSSIBLE CAUSES CHECK REPAIR DISPLAYED FAULT ALERT MESSAGE The control system has failed to ignite the Main Burner Water heater is not properly grounded loose or open ground wire to the Main Burner Dirty corroded flame sensor clean flame sensor with fine steel wool replace if damaged Loose or open wiring to the flame sensor Loose or open wiring to the 24 V Gas Control Valve Supply gas turned off low gas volume Intake air and or vent piping is restricted or improperly installed Low or no manifold gas pressure to the Main Burner The control system has detected the Blocked Exhaust Switch contacts are open The condensate drain is blocked filling the exhaust elbow with water clear the condensate drain Loose or open wiring to the Blocked Exhaust Switch Restricted blocked vent piping condensate trapped in low point Excessive equivalent pipe length e
214. here it will continue heating the water until the Operating Set Point is reached At this point the control system will de energize the 24 V Gas Control Valve and enter the post purge cycle 60 seconds 11 The Combustion Blower will run for the duration of the post purge cycle to purge the water heater of all combustion gases When the post purge cycle is complete the blower is de energized and will coast to a stop 12 The control system now enters the standby mode while continuing to monitor the internal storage tank water temperature and the state of other system devices If the tank temperature drops below the Operating Set Point minus the Differential setting the control will automatically return to Step 2 and repeat the operating cycle SEQUENCE OF OPERATION FLOW CHART If tank temperature drops below Operating Set Point minus Differential setting a heating cycle is activated Control System performs diagnostic checks Normal State of all pressure switches and ECO are checked Control System Locks Out Blower Prover pressure switch verified open Displays Fault Msg All other pressure switches and ECO are verified closed Combustion Blower is energized Pre Purge cycle Blower Prover switch contacts confirmed Control System Locks Out closed by control system Blower Prover Open Igniter is energized 24 V Gas Valve is energized gas flows to Main Burner Is flame sensed at the Main Burner Fault Msg is displayed
215. hes 30 cm mechanical air supply 6 feet 1 83 m 10 feet 3 m horizontally distance of 2 feet 61 inlet cm from the center line of the terminal Clearance to unventilated soffit 12 inches 90 cm 12 inches 30 cm Clearance above paved sidewalk or paved 7 feet 2 13 mm 7 feet 2 13 m driveway located on public property Clearance to outside 7777 l r 2 feet 60 cm 2 feet 60 cm veranda porch deck or 12 inches 30 cm t 12 inches 30 cm t balcony G paranee ie inside 18 inches 45 cm 18 inches 45 cm corner 1 In accordance with the current CSA B149 1 Natural Gas and Propane Installation Code 2 In accordance with the current ANSI Z223 1 NFPA 54 National Fuel Gas Code T Avent shall not terminate where it may cause hazardous frost or ice accumulations on adjacent property surfaces Permitted only if veranda porch deck or balcony is fully open on a minimum of two sides beneath the floor Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer s installation instructions 28 TERMINATION CLEARANCES SIDEWALL DIRECT VENT DIRECT VENT using outdoor air for combustion EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION FIXED OPERABLE cLOSED V VENT TERMINAL AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED NN Figure 17 Vent terminal clearances for Direct Vent installations Direct Vent configurations use outdoor a
216. ht be supplied from extremely cold ambient through fresh air intake piping system it is recommended that a backflow preventer be installed at the intake vent terminal close to the blower before proceeding with installation of the rest of the fresh air intake piping Call the technical support phone number listed on the back cover of this manual for more information POLYPROPYLENE INSTALLATIONS The water heater has been approved to be installed with Polypropylene vent material as shown in Table 5 and Table 6 The approved application of single wall non flexible non concentric Polypropylene vent material is offered by two specific manufacturers Centrotherm ECO Systems and DuraVent Polypropylene These listed products must be installed by following the vent manufacturer s instructions Refer to Table 7 on Page 26 to determine the maximum pipe length and number of elbows that can be used Insulation should not be used on Polypropylene venting materials The use of insulation will cause increased vent wall temperatures which could result in vent pipe failure Use only the adapters and vent system listed in Tables below DO NOT mix vent systems of different types or manufacturers Failure to comply could result in severe personal injury death or substantial property damage Installations must comply with applicable national state and local codes For Canadian installation Polypropylene vent must be listed as a ULC S636 approved s
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218. ief Valve must not be removed from its designated opening nor plugged The Temperature Pressure Relief Valve must be installed directly into the fitting of the water heater designed for the relief valve Install discharge piping so that any discharge will exit the pipe within 6 inches 15 2 cm above an adequate floor drain or external to the building In cold climates it is recommended that it be terminated at an adequate drain inside the building Be certain that no contact is made with any live electrical part The discharge opening must not be blocked or reduced in size under any circumstances Excessive length over 30 feet 9 14 m or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve No valve or other obstruction is to be placed between the Temperature Pressure Relief Valve and the tank Do not connect discharge piping directly to the drain unless a 6 15 2 cm air gap is provided To prevent bodily injury hazard to life or property damage the temperature pressure relief valve must be allowed to discharge water in adequate quantities should circumstances demand If the discharge pipe is not connected to a drain or other suitable means the water flow may cause property damage CAUTION e Temperature Pressure Relief Valve discharge pipe must terminate at adequate drain T amp P VALVE DISCHARGE PIPE REQUIREMENTS e Shall not be smaller in size than the outlet pipe size of the valve
219. in required clearances to combustibles Keep ignition sources away from faucets after extended period of non use Read instruction manual before installing using or servicing water heater Water heater has a main burner and ignition device The ignition device Al vapors from flammable liquids may explode and catch fire causing death orsevere burns 1 can come on at any time and 2 will ignite flammable vapors Do not use or store flammable products such as gasoline solvents or adhesives in the same room or area near the 1 water heater 2 3 Vapors cannot be seen are heavier than air go along way on the floor and can be carried from other rooms to the ignition device by air currents Keep flammable products 1 far away from heater 4 2 inapproved containers 3 tightly closed and 4 out of children s reach AWARNING For continued protection against risk of fire Do not install water heater on carpeted floor Do not operate water heater if flood damaged This water heater must not be installed directly on carpeting Carpeting must be protected by metal or wood panel beneath the water heater extending beyond the full width and depth of the water heater by at least 3 7 6 cm in any direction or if the water heater is installed in an alcove or closet the entire floor must be covered by the panel Failure to heed this warning may result in a fire hazard A WA RN N
220. ir for combustion CANADIAN INSTALLATIONS 1 US INSTALLATIONS 2 CANADIAN INSTALLATIONS 1 US INSTALLATIONS 2 Clearance to each side of center line extended above meter regulator assembly DMCA tO Semice geet cm 3 feet 91 cm regulator vent outlet 6 inches 15 cm for 6 inches 15 cm for appliances up Clearance to a non to 10 000 Btu hr 3 kW 12 inches 2PPliances up to 10 000 Btu hr 3 kW 9 inches 23 Clearance to mechanical air supply 30 cm for appliances between cm for appliances between C permanently closed 6 inches 15 cm 6 inches 15 cm J inlet into building or 10 000 Btu hr 3 kW and 100 000 10 000 BE 3 kW and window combustion air inlet to Btu hr 30 kW 36 inches 91 cm 50 000 Btu hr 15 kW 12 Clearance above grade veranda porch deck or 12 inches 30 cm 12 inches 30 cm balcony 3 feet 91 cm within a height 15 3 feet 91 cm within a height feet 4 5 m above the meter 15 feet 4 5 m above the regulator assembly meter regulator assembly 6 inches 15 cm for appliances up to 10 000 Btu hr 3 kW 9 inches 23 cm for appliances between 10 000 Btu hr 3 kW and 50 000 Btu hr 15 kW 12 inches 30 cm for appliances above 50 000 Btu hr 15 kW 6 inches 15 cm for appliances up to 10 000 Btu hr 3 kW 12 inches 30 cm for appliances between 10 000 Btu hr 3 kW and 100 000 Btu hr 30 kW 36 inches 91 cm for appliances above 100 000 Btu hr 30 kW Clearance to
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229. jury or death Do not operate the heater with rain cap removed or recirculation of combustion products may occur Water may also collect inside larger combustion air pipe and flow to the burner enclosure Failure to follow this warning could result in product damage or improper operation personal injury or death 4 Install Y concentric fitting and pipe assembly through structure s hole NOTE Do not allow insulation or other materials to accumulate inside pipe assembly when installing through hole 5 Install rain cap and small diameter pipe assembly in Y concentric fitting and large pipe assembly Ensure small diameter pipe is bottomed and cemented in Y concentric fitting 6 Secure assembly to structure as shown in Figure 29 using field supplied metal strapping or equivalent support material NOTE Ensure termination location clearance dimensions are as shown in the diagrams found in Figure 29 and Figure 30 When extending the length of the 4 pipe the added length beyond 21 1 8 must be deducted from the maximum equivalent feet of vent pipe NOTE If assembly needs to be extended to allow side wall thickness requirement the 2 pipes supplied in the kit may be replaced by using same diameter field supplied SDR 26 PVC D2241 pipe Do not extend 21 1 8 53 6 cm dimension more than 60 1 5 m See Figure 25 Do not use field supplied couplings to extend pipes Airflow restriction will occur and the heater pressure swi
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231. l gas appliances shut off until the water heater installation is complete A gas line of sufficient size must be run to the water heater Consult the current edition of National Fuel Gas Code ANSI Z223 1 NFPA 54 or the Natural Gas and Propane Installation Code CAN CSA B149 1 and your gas supplier concerning pipe size There must be A readily accessible manual shut off valve in the gas supply line serving the water heater and e A sediment trap ahead of the gas control valve to help prevent dirt and foreign materials from entering the gas control valve A ground joint union of proper size between the manual shut off valve and control valve to permit servicing of the unit Be sure to check all the gas piping for leaks before lighting the water heater Use a soapy water solution not a match or open flame Rinse off soapy solution and wipe dry DISHWASHING MACHINES All dishwashing machines meeting the National Sanitation Foundation requirements are designed to operate with water flow pressures between 15 and 25 pounds per square inch 103 kPa and 173 kPa Flow pressures above 25 pounds per square inch 173 kPa or below 15 pounds per square inch 103 kPa will result in improperly sanitized dishes Where pressures are high a water pressure reducing or flow regulating control valve should be used in the 180 F 82 C line to the dishwashing machine and should be adjusted to deliver water pressure between these limits HOT
232. lert condition appears below that Pressing the Operational Button under ADVANCED will give more detailed service information and a list of possible causes for the Fault or Alert condition Call a service professional Your Company Name Here press DOWN for more If there is no Fault or Alert condition active this menu will not contain any information none will be shown next to Current Fault in the BACK ADVANCED Main menu FAULT HISTORY DESCRIPTION ACTION DISPLAY Select Fault History from the Main Menu and press the Operational Button under SELECT to enter this menu This menu contains non adjustable operational information Use the Up amp Down Buttons to Blocked Air Intake A7 E navigate the menu 7 51 mins ago This menu contains a list of the last nine 9 Fault and Alertmessages Blocked Exhaust A8 2 Fault History with a time stamp The newest event will replace the oldest 54 mins ago Press the Operational Button under VIEW to view details for each Low Gas Pressure A6 Fault or Alert message stored 57 mins ago NOTE fault history memory is cleared after 30 days Blower Prover Failure AC FAULT OCCURRENCE DESCRIPTION ACTION DISPLAY Select Fault Occurrence from the Main Menu and press the Operational Button under SELECT to enter this menu This menu contains non adjustable operational information Use the Up amp Down Ignition Failure Buttons to navigate the menu ECO Fault
233. low of ventilation air If you have any doubts or questions at all call your gas supplier Failure to provide the proper amount of combustion air can result in a fire or explosion and cause death serious bodily injury or property damage Adequate clearance 30 76 cm for servicing this water heater should be considered before installation such as changing the anode rods control system components and gas control valve A minimum clearance of 5 5 14 0 cm must be allowed for access to replaceable and or serviceable parts such as the thermostats drain valve condensate drain temperature pressure relief valve clean out opening and the vent connection exhaust elbow A WA R N N G When installing the heater consideration must be given to proper 7 1 Hazard Carbon Monoxide Gas location Location selected should be as close to the wall as practicable ASSE xw Install water heater in accordance with and as centralized with the water piping system as possible EA E the instruction manual and NFPA 54 or d ccs CAN CSA B1491 CEILING To avoid injury combustion and ventilation air must be taken from outdoors lt lt Do not place chemical vapor emitting products near water heater TOP VIEW TOP VIEW OF CLOSET WITHOUT DOOR 0 MIN N FRONT VIEW llo MIN For service access Breathing carbon monoxide can cause brain damage or death Always read and understand instruction manual Figure 3 CLEARANCES 1
234. lowing do not operate heater until all corrective steps have been made by a qualified service agency 1 External fire 2 Damage 3 Firing without water GROUNDING INSTRUCTIONS This water heater must be grounded in accordance with the National Electrical Code and or local codes These must be followed in all cases Failure to ground this water heater properly may also cause erratic control system operation This water heater must be connected to a grounded permanent wiring system or an equipment grounding conductor must be run with the circuit conductors and connected to the equipment grounding terminal or lead on the water heater HYDROGEN GAS FLAMMABLE AWARNING Explosion Hazard e Flammable hydrogen gases may be present e Keep all ignition sources away from faucet when turning on hot water Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time generally two weeks or more Hydrogen gas is extremely flammable To reduce the risk of injury under these conditions it is recommended that a hot water faucet served by this water heater be opened for several minutes before using any electrical appliance connected to the hot water system If hydrogen is present there will probably be an unusual sound such as air escaping through the pipe as the water begins to flow THERE SHOULD BE NO SMOKING OR OPEN FLAME NEAR THE FAUCET AT THE TIME IT IS OPEN
235. lways read and understand instruction manual At least once a year a visual inspection should be made of the venting system You should look for 1 Obstructions which could cause improper venting The combustion and ventilation air flow must not be obstructed 2 Damage or deterioration which could cause improper venting or leakage of combustion products Be sure the vent piping is properly connected to prevent escape of dangerous flue gasses which could cause deadly asphyxiation Obstructions and deteriorated vent systems may present serious health risk or asphyxiation Chemical vapor corrosion of the flue and vent system may occur if air for combustion contains certain chemical vapors Spray can propellants cleaning solvents refrigerator and air conditioner refrigerants swimming pool chemicals calcium and sodium chloride waxes bleach and process chemicals are typical compounds which are potentially corrosive If after inspection of the vent system you found sooting or deterioration something is wrong Call the local gas utility to correct the problem and clean or replace the flue and venting before resuming operation of the water heater ANODE ROD INSPECTION CAUTION Avoid water heater damage Inspection and replacement of anode rod required Each water heater contains at least one anode rod which will slowly deplete due to electrolysis prolonging the life of the water heater by protecting the glass line
236. meeting the requirements for Relief Valves for Hot Water Supply Systems ANSI 221 22 CSA 4 4 and the code requirements of ASME If replaced the new T amp P valve must meet the requirements of local codes but not less than a combination Temperature Pressure Relief Valve rated sized and certified as indicated in the above paragraph The new valve must be marked with a maximum set pressure not to exceed the marked hydrostatic working pressure of the water heater 150 psi 1 035 kPa and a discharge capacity not less than the water heater Btu hr or kW input rate as shown on the water heater s model rating plate NOTE In addition to the factory installed Temperature Pressure Relief Valve on the water heater each remote storage tank that may be installed and piped to a water heating appliance must also have its own properly sized rated and approved Temperature Pressure Relief Valve installed Call the toll free technical support phone number listed on the back cover of this manual for technical assistance in sizing a Temperature Pressure Relief Valve for remote storage tanks AWARNING e Temperature Pressure Relief Valve must comply with ANSI Z21 22 CSA 4 4 and ASME code e Properly sized temperature pressure relief valve must be installed in opening provided e Can result in overheating and excessive tank pressure e Can cause serious injury or death For safe operation of the water heater the Temperature Pressure Rel
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238. n tank or device if necessary Contact qualified installer or service agency Water supply systems may because of such events as high line pressure frequent cut offs the effects of water hammer among others have installed devices such as pressure reducing valves check valves back flow preventers etc to control these types of problems When these devices are not equipped with an internal by pass and no other measures are taken the devices cause the water system to be closed As water is heated it expands thermal expansion and closed systems do not allow for the expansion of heated water The water within the water tank expands as it is heated and increases the pressure of the water system If the relieving point of the water heater s temperature pressure relief valve is reached the valve will release excess pressure The temperature pressure relief valve is not intended for the constant relief of thermal expansion This is an unacceptable condition and must be corrected It is recommended that any devices installed which could create a closed system have a by pass and or the system have an expansion tank or device to relieve the pressure built by thermal expansion in the water system Expansion tanks are available for ordering through a local plumbing contractor Contact the local water heater supplier or qualified service agency for assistance in controlling these situations OPERATIONAL CONDITIONS SMELLY WATER In each
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240. nd of a heating cycle Fault The control system has detected a Fault condition Heating operation is disabled control system lock out until the Fault condition is corrected Water Heating Enable Disable Switch must be cycled off and on to reset the control system NOTE Cycling Water Heating Enable Disable Switch will not reset the control system if the condition that caused the Fault has not been corrected Heating Disabled The heating is disabled by the Enable Disable On Off switch in front of the unit CONTROL SYSTEM MENUS From the Desktop screen pressing the Operational button directly below Menu on the LCD will display the Main Menu This is where all control system menus are located The table below describes the control system menus Table 14 CONTROL SYSTEM MENUS Menu Description ooo Most commonly accessed menu Contains the Operating Set Point and Differential user settings Heater Status This menus displays the current state of all pressure switches and the ECO open closed The on off status of the Combustion Blower 24 Volt Gas Control Valve Igniter Flame Sensor and other monitored water heater components are displayed in this menu Display Settings Temperature units F or C the LCD appearance brightness contrast and backlight delay user adjustable settings are located in this menu Heater Information Elapsed time of operation total heating cycle time heating cycle count heating on time along with U
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243. nection Not shown in figure Condensate from the exhaust connection Leakage from other water heaters water lines or ground seepage should also be checked To check where threaded portion enters tank insert cotton swab between jacket opening and fitting If cotton is wet follow Draining instructions in the Periodic Maintenance section and then remove fitting Put pipe dope or teflon tape on the threads and replace Then follow Filling the Water Heater instructions in the Installing the New Water Heater section TROUBLESHOOTING INSTALLATION CHECKLIST The list below represents some of the most critical installation requirements that when overlooked often result in operational problems down time and needless parts replacement This is not a complete list Before performing any troubleshooting procedures use the list below to check for installation errors Costs to correct installation errors are not covered under the limited warranty Ensure all installation requirements and instructions in this manual have been maintained and followed WATER HEATER LOCATION 1 Ensure proper clearances to combustibles are maintained and there is sufficient room to service the water heater 2 Ensure the area is free of corrosive elements and flammable materials VENTING 3 Ensure the intake air and or vent exhaust piping is the correct size for the installed length 4 Ensure the maximum equivalent feet
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247. ns In addition to using the lowest possible temperature setting that satisfies your hot water needs a means such as a mixing valve should be used at the hot water taps used by these people or at the water heater see Figure 9 Valves for reducing point of use temperature by mixing cold and hot water are also available Consult a Qualified Installer or Service Agency Follow manufacturer s instructions for installation of the valves Before changing the factory setting on the thermostat read the Temperature Regulation section in this manual 18 Toxic Chemical Hazard e Do not connect to non potable water system This water heater shall not be connected to any heating systems or component s used with a non potable water heating appliance All piping components connected to this unit for space heating applications shall be suitable for use with potable water Toxic chemicals such as those used for boiler treatment shall not be introduced into this system When the system requires water for space heating at temperatures higher than required for domestic water purposes a mixing valve must be installed Please refer to Figure 9 for suggested piping arrangement These water heaters cannot be used applications only in space heating POWER SUPPLY The water heaters covered in this manual require a 120 VAC 10 single phase 60Hz 15 amp power supply and must also be electrically grounded in accordance with local
248. ntrol system s LCD liquid crystal display and five snap acting momentary user input buttons an up down and three multifunction operational buttons below the LCD see Figure 36 USER INPUT BUTTONS The up and down buttons are used to navigate menus and adjust user settings The operational buttons are used to enter exit menus select menu items activate adjustment modes and confirm or cancel new user settings The operational buttons are multifunctional their current function is defined by the text that appears directly above each button on the LCD screen THE DESKTOP SCREEN During normal operation the control system will display the Desktop screen on the LCD which is the default screen The control system will return to the Desktop screen when there are no active Fault or Alert conditions or when there has been no user input for several minutes Manufacturer and water heater model information is displayed in Title Bar at the top of the Desktop screen Menu titles are displayed in the Title Bar when navigating the control system menus The first temperature shown on the Desktop screen Tank Temperature is the temperature of the water inside the water heater s storage tank commercial models only The Operating Set Point is also shown on the Desktop screen The Operating Set Point is the temperature at which the control system will maintain the water inside the storage tank Beneath the Operating Set Point is the Status line
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253. ock up gas pressure regulators must be rated at or above the input Btu hr rating of the water heater they supply Positive lock up gas pressure regulator s should be installed no closer than 3 feet 1 meter and no farther than 8 feet 2 4 meters from the water heater s inlet gas connection After installing the positive lock up gas pressure regulator s an initial nominal supply pressure setting of 7 0 W C 1 74 kPa for Natural Gas and 11 0 W C 2 74 kPa for Propane LP while the water heater is operating is recommended and will generally provide good water heater operation Some additional adjustment may be required later to maintain a steady gas supply pressure When installing multiple water heaters in the same gas supply system it is recommended that individual positive lock up gas pressure regulators be installed at each unit 20 All gas piping must comply with local codes and ordinances or with the current editions National Fuel Gas Code ANSI Z223 1 NFPA 54 or the Natural Gas and Propane Installation Code CAN CSA B149 1 whichever applies Copper or brass tubing and fittings except tin lined copper tubing shall not be used If the gas control valve is subjected to pressures exceeding 1 2 psi 3 5 kPa the damage to the gas control valve could result in a fire or explosion from leaking gas If the main gas line Shut off serving all gas water heaters is used also turn off the gas at each water heater Leave al
254. ods described in the Confined Space section that follows CONFINED SPACE A Confined Space is one whose volume IS LESS THAN 50 cubic feet per 1 000 Btu hr 4 8 cubic meters per kW of the total input rating of all appliances installed in the space Openings must be installed to provide fresh air for combustion ventilation and dilution in confined spaces The required size for the openings is dependent on the method used to provide fresh air to the confined space AND the total Btu hr input rating of all appliances installed in the space DIRECT VENT APPLIANCES Appliances installed in a Direct Vent configuration that derive all air for combustion from the outdoor atmosphere through sealed intake air piping are not factored in the total appliance input Btu hr calculations used to determine the size of openings providing fresh air into confined spaces EXHAUST FANS Where exhaust fans are installed additional air shall be provided to replace the exhausted air When an exhaust fan is installed in the same space with a water heater sufficient openings to provide fresh air must be provided that accommodate the requirements for all appliances in the room and the exhaust fan Undersized Openings will cause air to be drawn into the room through the water heater s vent system causing poor combustion Sooting serious damage to the water heater and the risk of fire or explosion may result It can also create a risk of asphyxiation LOUVERS AN
255. of pipe has not been exceeded for the intake air and or vent pipe 5 Ensure the maximum number of elbows has not been exceeded in the intake air and or vent pipe 6 Ensure all exterior clearances for the intake air vent and concentric terminations are maintained These clearances and those cited by local and national codes must be maintained T f venting direct vent ensure the screen located in air intake at the water heater was removed GAS SUPPLY AND PIPING 8 Ensure the supply gas line to each water heater meets the minimum supply gas line size requirements CONDENSATE DRAIN 9 Ensure the condensate drain is properly connected to the exhaust elbow on the water heater with a water trap to prevent vent gases from escaping into the installed space and draining freely to a suitable floor drain ELECTRICAL CONNECTIONS 10 Ensure the water heater is properly grounded Flame sensing requires an adequate earth ground If the water heater is not properly grounded it will cause Ignition Failure 51 SEQUENCE OF OPERATION Read the Sequence of Operation below before attempting to correct any operational problems See the Sequence Of Operation Flow Chart 1 When the control system is first powered during boot up the blower will run momentarily and stop and the control system will display water heater model information during initialization After a few moments the control system LCD which is part of the UIM user interfac
256. off when a build up of negative pressure in the intake air pipe occurs This switch is a negative pressure switch that requires an increase in negative pressure to change the electrical contacts from normally closed to open The switch is connected to the pressure tap on the PVC pipe connected to the inlet of the blower When this switch prevents the unit from igniting most likely the intake is blocked Verify that the screen on the intake air connection conventional vent the intake air pipe and termination direct vent installations are free of obstructions that may prevent air from entering the unit Insure the screen on intake air connection has been removed on direct vent installations see Figure 14 AIR INTAKE SCREEN Also verify the intake air pipe length does not exceed the maximum allowed as shown in the Vent Section of this manual WATER HEATING ENABLE DISABLE ON OFF SWITCH The Water Heating Enable Disable On Off Switch is a single pole single throw rocker switch This switch provides 24V power to the gas control valve SPARK IGNITER The Spark Igniter is a device that ignites the main burner by spark When high voltage is applied to the igniter spark is generated to ignite the main burner INSTALLATION CONSIDERATIONS LOCATING THE WATER HEATER Carefully choose a location for the new water heater The placement is a very important consideration for the safety of the occupants in the building and for the most ec
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258. om of the enclosure The openings shall communicate directly with the outdoors See Figure 5 Each opening shall have a minimum free area of 1 square inch per 4 000 Btu hr 550 mm per kW of the aggregate input rating of all appliances installed in the enclosure Each opening shall not be less than 100 square inches 645 cm OUTDOOR AIR THROUGH ONE OPENING _ Figure 6 Alternatively a single permanent opening commencing within 12 inches 300 mm of the top of the enclosure shall be provided See Figure 6 The water heater shall have clearances of at least 1 inch 25 mm from the sides and back and 6 inches 150 mm from the front of the appliance The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces that freely communicate with the outdoors and shall have a minimum free area of the following 1 1 square inch per 3000 Btu hr 733 mm per kW of the total input rating of all appliances located in the enclosure and 2 Notless than the sum of the areas of all vent connectors in the space OUTDOOR AIR THROUGH TWO HORIZONTAL DUCTS Figure 7 The confined space shall be provided with two permanent horizontal ducts one commencing within 12 inches 300 mm of the top and one commencing within 12 inches 300 mm of the bottom of the enclosure The horizontal ducts shall communicate directly with the outdoors See Figure 7 Eac
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260. on can be found on the rating plate affixed to the water heater Refer to the parts list for more information or call the parts department or technical support phone number listed on the back cover of this manual for further assistance FAULT AND ALERT CONDITIONS FAULT CONDITIONS When the control system declares a Fault condition it will display a Fault message on the control system s LCD with an exclamation mark The control system will lock out and disable heating operation until the condition is corrected The water heater must be serviced by a qualified service technician before operation can be restored ALERT CONDITIONS When the control system declares an Alert condition it will display an Alert message on the control system s LCD with a question mark The water heater will continue to operate during an Alert condition but the water heater must be serviced by a qualified service technician as soon as possible RESETTING CONTROL SYSTEM LOCK OUTS To reset the control system from a lock out condition turn off the switch in front of the unit for approximately 20 seconds and then back on Keep in mind if the condition that caused the Fault has not been corrected the control system will continue to lock out DIAGNOSTIC CHECKS A WARNING e Turn off power to the water heater before performing any service Label all wires prior to disconnecting when performing service Wiring errors can cause improper and dangerous
261. onomical use of the water heater CAUTION e All water heaters eventually leak e Do not install without adequate drainage Whether replacing an existing water heater or installing the water heater in a new location observe the following critical points 1 The water heater must be located indoors 2 he water heater must not be located in an area where it will be subject to freezing temperatures 3 Locate the water heater so it is protected and not subject to physical damage by a moving vehicle 4 Locate the water heater on a level surface 5 Locate the water heater near a floor drain The water heater should be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the water heater or to lower floors of the structure When such locations cannot be avoided it is recommended that a metal drain pan piped to adequate drain be installed under the water heater Drain pan should be fabricated with sides at least 2 deep with diameter at least 2 greater than diameter of heater Pan must not restrict combustion air flow 6 Locate the water heater close to the point of major hot water usage T Locate the water heater close to a 120 VAC power supply See Power Supply on Page 18 for requirements 8 Locate the water heater where an adequate supply of fresh air for combustion and ventilation can be obtained See Combustion Air and Ventilation on Page 15 9 Locate
262. or enclosed areas with roof penetration refer to Vertical Vent Terminal Installation on Page 30 2 Through the Wall Termination horizontal vent termination directly through an outside wall see Figure 13 VENT TERMINATION on Page 26 3 Horizontal Direct Vent using Through the Wall Termination to exhaust flue products and piping to bring combustion air to the water heater from the outside See Figure 15 on Page 27 4 Vertical Direct Vent using a vertical vent termination to exhaust flue products and piping to bring combustion air to the water heater from outside see Figure 21 amp Figure 22 on Page 31 In cold climates any water vapor remaining in the flue gases will condense into a cloud of vapor at the point where the vent system exits the building Special consideration is recommended before locating the vent termination near walkways windows and building entrances Direct venting into dead spaces such as alleys atriums and inside corners can cause recirculation of flue gases Recirculation of flue gases will cause sooting and icing of the combustion air intake during severe cold weather To prevent the recirculation of flue gases maintain as much distance as possible between the combustion air intake and the exhaust vent terminal refer to Figure 16 and Figure 17 on Page 28 amp Page 29 respectively 24 U S INSTALLATIONS NOTE This unit can be vented with PVC pipe materials DWV ASTM D2665 or CSA
263. or have any reducing couplings or other restrictions Shall not be plugged or blocked Shall not be exposed to freezing temperatures Shall be of material listed for hot water distribution Shall be installed so as to allow complete drainage of both the Temperature Pressure Relief Valve and the discharge pipe e Must terminate a maximum of six inches 15 2 cm above a floor drain or external to the building In cold climates it is recommended that the discharge pipe be terminated at an adequate drain inside the building e Shall not have any valve or other obstruction between the temperature pressure relief valve and the drain A DANGER e Burn hazard e Hot water discharge e Keep clear of Temperature Pressure Relief Valve discharge outlet The Temperature Pressure Relief Valve must be manually operated at least twice a year Caution should be taken to ensure that 1 no one is in front of or around the outlet of the Temperature Pressure Relief Valve discharge line and 2 the water manually discharged will not cause any bodily injury or property damage because the water may be extremely hot If after manually operating the valve it fails to completely reset and continues to release water immediately close the cold water inlet to the water heater follow the draining instructions in this manual and replace the Temperature Pressure Relief Valve with a properly rated sized new one NOTE The purpose of a Temper
264. or the current editions of the National Fuel Gas Code ANSI Z223 1 NFPA 54 or the Natural Gas and Propane Installation Code CAN CSA B149 1 1 Once the proper location has been determined cut 2 holes in the wall large enough to accomodate the pipe Pipe diameters and distance between hole centers can be found in Table 9 2 Slide both the intake and exhaust pipes through the holes Solvent cement both pipes to the base of the vent termination kit follow the solvent cementing procedures outlined in the IPEX System 636 Installation Guide which is available on the web www ipexinc com 3 To fasten the Base to the wall use the supplied screws and anchors A 3 16 5mm hole 1 3 16 30mm deep will need to be drilled for the anchors Locate the anchor hole using the base as a template 4 Screw the Cap to the Base using the supplied screws 5 Once the vent termination and pipes are secured the wall penetrations will need to be sealed from the interior using a PVC compatible sealant material 6 All vent pipes and air inlets must terminate at the same height to avoid possibility of severe personal injury death or substantial property damage 8 Operate heater through 1 heat cycle to ensure combustion air and vent pipes are properly connected to concentric vent termination connections Air Piping Vent Base Vent Cap Figure 33 Table 9 From Boiler Vent Pipe Connection Vent Low Profile Termination Kits
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268. ping 4 Check all water piping and connections for leaks Repair as needed VENTING INSTALLATION A WARNING Breathing Hazard Carbon Monoxide Gas Install vent system in accordance with these instructions and local codes Do not operate water heater if flood damaged Do not operate if soot buildup Do not obstruct water heater air intake with insulating jacket Do not place chemical vapor emitting products near water heater Gas and carbon monoxide detectors are available Never operate the heater unless it is vented to the outdoors and has adequate air supply to avoid risks of improper operation fire explosion or asphyxiation Analyze the entire vent system to make sure that condensate will not become trapped in a section of vent pipe and therefore reduce the open cross sectional area of the vent Breathing carbon monoxide can cause brain damage or death Always read and understand instruction manual VENT INSTALLATION CONSIDERATIONS This water heater can be vented using room air for intake combustion air or direct vented so that all intake air for combustion comes from the outside through a sealed pipe This water heater may be installed in 4 separate orientations depending on the requirements of the building and the water heater The installer must decide which method is most appropriate for each installation These orientations are 1 Vertical Termination vertical vent termination through unenclosed
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271. r run until the water is no longer hot Then close the hot water faucet Connect a hose to the drain valve and terminate it to an adequate drain Ensure the drain hose is secured before and during the entire flushing procedure Flushing is performed with system water pressure applied to the water heater 49 6 f Open the water heater drain valve to flush the storage tank Flush the water heater storage tank to remove sediment and allow the water to flow until it runs clean 8 Close the water heater drain valve when flushing is completed 9 Remove the drain hose 10 Fill the water heater see Filling The Water Heater in this manual 11 Turn on the electrical supply to place the water heater back in operation 12 Allow the water heater to complete several heating cycles to ensure it is operating properly SERVICE If a condition persists or you are uncertain about the operation of the water heater contact a qualified service agency Use this guide to check a leaking water heater Many suspected Leakers are not leaking tanks Often the source of the water can be found and corrected If you are not thoroughly familiar with gas codes your water heater and safety practices contact your gas supplier or qualified installer to check the water heater Read this manual first Then before checking the water heater make sure the gas supply has been turned OFF and never turn the gas ON before the tank is completely full
272. risk for scald injury ADANGER Feel water showering before bathing or Temperature limiting valves are available Read instruction manual for safe temperature setting HOT WATER CAN SCALD Water heaters are intended to produce hot water Water heated to a temperature which will satisfy space heating clothes washing dish washing and other sanitizing needs can scald and permanently injure you upon contact Some people are more likely to be permanently injured by hot water than others These include the elderly children the infirm or physically mentally handicapped If anyone using hot water from this heater fits into one of these groups or if there is a local code or state law requiring a certain temperature water at the hot water tap then you must take special precautions In addition to using the lowest possible temperature setting that satisfies your hot water needs a means such as a mixing valve should be used at the hot water taps used by these people or at the water heater Mixing valves are available at plumbing supply or hardware stores see Figure 9 Follow manufacturer s instructions for installation of the valves Before changing the factory setting on the thermostat read the Temperature Regulation section in this manual Never allow small children to use a hot water tap or to draw their own bath water Never leave a child or handicapped person unattended in a bathtub or shower SETTING THE WATER HEATE
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275. s ability equivalent to that of a Qualified Agency as defined by ANSI below in the field involved Installation skills such as plumbing air supply venting gas supply and electrical supply are required in addition to electrical testing skills when performing service ANSI Z223 1 2006 Sec 3 3 83 Qualified Agency Any individual firm corporation or company that either in person or through a representative is engaged in and is responsible for a the installation testing or replacement of gas piping or b the connection installation testing repair or servicing of appliances and equipment that is experienced in such work that is familiar with all precautions required and that has complied with all the requirements of the authority having jurisdiction If you are not qualified as defined by ANSI above and licensed or certified as required by the authority having jurisdiction to perform a given task do not attempt to perform any of the procedures described in this manual If you do not understand the instructions given in this manual do not attempt to perform any procedures outlined in this manual ICOMM amp BACNET COMPATIBLE This water heater is compatible with the iCOMM remote monitoring system The iCOMM system hardware and monitoring service is purchased separately It allows users to monitor critical operational diagnostic and energy usage data from a secure web site The iCOMM system can automati
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277. sage and wear Config CRC If the Cycle Count per day is high divide cycle count by days UIM Version AA AA to determine cycles per day or the cycle duration is short Use External Enable No determine burner on time total minutes divide burner on time External Enable Status No total minutes by cycle count consider raising the Differential setting to avoid short cycling and excessive component wear see Operating Set Point and Differential Adjustment Ignition Trials This historical data can also be used to assist facilities managers in forecasting planned replacement of equipment to help avoid lengthy and costly hot water supply interruptions Use External Enable Enable Disable external control function External Enable Status Status of external enable if Use External Enable is Yes Ignition Trials The maximum number of ignition trials before lockout 43 CURRENT FAULT DESCRIPTION ACTION DISPLAY Select Current Fault from the Main Menu and press the Operational Button under SELECT to enter this menu This menu contains non adjustable operational information Use the Up amp Down Buttons to Blocked Exhaust navigate the menu Fault occurred 2 mins ago The exhaust is blocked or restricted Ensure condensate hose is draining This menu contains the current Fault or Alert error message The time the Fault or Alert message occurred appears directly below A brief description of what causes the particular Fault or A
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280. st setting Set the ON OFF switch on the control panel to the OFF postition Turn off all electrical power to the appliance if service is to be performed TEMPERATURE SETTING TIME TO PRODUCE 2nd amp 3rd SEE INSTRUCTION MANUAL DEGREE BURNS ON ADULT SKIN 180 F 82 C Nearly Instantaneous 160 F 71 C About 1 2 Second 150 F 65 C About 1 1 2 Seconds 140 F 60 C Less than 5 seconds 130 F 54 C More Than 30 Seconds 120 F 49 C More Than 5 Minutes For operation at outlet temperature not in excess of 180 F 82 C This appliance must be installed in California Proposition 65 lists accordance with local codes or in the chemical substances known to the state to absence of local codes the National Fuel cause cancer birth defects death serious Gas Code ANSI Z223 1 NFPA 54 or the CSA illness or other reproductive harm This B149 1 Natural Gas and Propane Installation Code product may contain such substances be heir origin from fuel fuel combustion Suitable for combination water potable heating gas oil or components of the product itself and space heating and not suitable for space 4kVVATF N NG This water heater must be heating applications only braced anchored or strapped to avoid VVater heater shall not be connected to SS ng Or HE heating system or component s previously procedures used with a non potable water heating appliance Ru rel J n approved Tor
281. tch may cause intermittent operation 7 Cement heater combustion air and vent pipes to concentric vent termination assembly See Figure 30 for proper pipe attachment 8 Operate heater through 1 heat cycle to ensure combustion air and vent pipes are properly connected to concentric vent termination connections NOTE SECURING STRAP MUST BE FIELD INSTALLED TO PREVENT MOVEMENT OF TERMINATION KIT IN SIDEWALL STRAP FIELD SUPPLIED COMBUSTION INTAKE AIR 1 MAXIMUM COMBUSTION AIR ELBOW FIELD SUPPLIED Figure 30 MULTI CONCENTRIC VENT TERMINATIONS When two or more water heaters are direct vented with concentric vent terminations near each other each water heater must be individually vented NEVER common vent this water heater When two or more water heaters are direct vented using concentric vent terminations the water heaters may be vented as shown in Figure 31 and Figure 32 TYP COMBUSTION INTAKE AIR x A M N MUM V An Figure 31 CONCENTRIC VENT TERMINATIONS FOR HORIZONTAL DIRECT VENTING 12 MINIMUM Figure 32 CONCENTRIC VENT TERMINATIONS FOR VERTICAL DIRECT VENTING THROUGH A ROOF 34 LOW PROFILE TERMINATION INSTALLATION This water heater is certified for sidewall direct venting with IPEX System 636 Low Profile Vent Kit Follow instructions below for proper installations All termination kits must be located and installed in accordance with local codes
282. ter Temperature F C normal shower temp DEED son Leena U S Government Memorandum C P S C Peter L Armstrong Sept 15 1978 Time for 1st Degree Burn Less Severe Burns GAS PIPING Make sure gas supplied is same type listed on model rating plate The inlet gas pressure must not exceed 14 inch water column 3 5 kPa for natural and propane gas L P The minimum inlet gas pressure shown on rating plate is that which will permit firing at rated input SEDIMENT TRAPS A WARNING Contaminants in gas lines can cause fire or explosion Clean all installation gas piping before nstall drip leg in accordance with NFPA 54 or CAN CSA B1491 A sediment trap shall be installed as close to the gas inlet of the water heater as practical at the time of water heater installation The sediment trap shall be either a tee fitting with a capped nipple in the bottom outlet or other device recognized as an effective sediment trap Contaminants in the gas lines may cause improper operation of the gas control valve that may result in fire or explosion Before attaching the gas line be sure that all gas pipe is clean on the inside To trap any dirt or foreign material in the gas supply line a sediment trap must be incorporated in the piping The sediment trap must be readily accessible Install in accordance with the Gas Piping section Refer to the current edition of the National Fuel Gas Code ANSI Z223 1 NFPA 5
283. ters the Standby mode The control is unable to initiate a heating cycle This will happen whenever a Fault condition is detected by the control system or water heating is disabled when the water heating enable disable on off switch is turned off or water heating is disable when an external enable disable connection is disabled The Combustion Blower is being energized The Blower Prover pressure switch contacts have closed The check mark icon is visual confirmation of contact closure The Igniter is being energized The 24 Volt Gas Control Valve is being energized The control system has sensed flame at the Main Burner from the Flame Sensor The control system has declared a Fault condition and must be inspected serviced by a Qualified Service Technician Fault message details can be viewed in the Current Fault menu Heating operation is disabled control system lock out until the condition that caused the Fault is corrected Water Heating Enable Disable Switch must be cycled off and on to reset the control system NOTE Cycling Water Heating Enable Disable Switch will not reset the control system if the condition that caused the Fault has not been corrected The control system has declared an Alert condition and must be inspected serviced by a Qualified Service Technician The water heater will continue to operate during an Alert condition 39 OPERATING STATES The current operational state of the water heater is displayed on
284. the Desktop screen as the Status The common operational states are described in the table below Table 13 OPERATING STATES State Description Standby The water heater is not in an active heating cycle IE the Tank Temperature is at or above the Operating Set Point minus temperature differential Input Verification The control system is conducting a diagnostic check at the beginning of a heating cycle Short Cycle Delay The control system is waiting for a pre defined time period to expire before initiating a heating cycle This prevents short cycling which can greatly accelerate wear on components such as the Igniter and Combustion Blower NOTE If the control system is in this operational state increase the Differential setting in the Temperatures menu to lengthen heating cycles The Combustion Blower is energized to flush residual flue gases from the combustion chamber prior to ignition The Igniter is energized and is ready to ensure proper ignition Gas Control Valve The 24 Volt Gas Control Valve is energized and opens to allow fuel gas to flow to the Main Burner On Inter Purge The Combustion Blower is energized to flush residual fuel gas from the combustion chamber after a failed ignition attempt Ignition was successful flame sensing current has been established The water in the storage tank is being heated Post Purge The Combustion Blower is energized to flush residual flue gases from the combustion chamber at the e
285. the water heater where the vent and intake air piping when installed will remain within the maximum equivalent lengths allowed See Venting on Page 24 10 Do not locate the water heater where noise such as the Combustion Blower during normal operation will be objectionable in adjacent areas 11 Do not locate the water heater where the subsequent installation of the vent exhaust or intake air terminations would be objectionable due to noise at the termination s This includes locations close to or across from windows and doors See Venting starting on Page 24 Do not locate water heater areas where flammable liquids vapors are likely to be present or stored garages storage and utility areas etc Flammable liquids such as gasoline solvents propane LP or butane etc and other substances such as adhesives etc emit flammable vapors which can be ignited by a gas water heater s ignition device or main burner The resulting flashback and fire can cause death or serious burns to anyone in the area 14 Also the water heater must be located and or protected so it is not subject to physical damage by a moving vehicle A WARNING Fire or Explosion Hazard Do not store or use gasoline or other flammable vapors and liquids in the vicinity ofthis or any other appliance Avoid allignition sources if you smell LP gas Do not expose water heater control to excessive gas pressure Use only gas shown on rating plate Mainta
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291. unless an effective method of controlling thermal expansion is also installed at the heater s and operational at all times The temperature and pressure relief valve installed on the heater is not an acceptable method 4 SERVICE AND REPAIR EXPENSES Under the limited warranty the warrantor will provide only a replacement water heater or part thereof The owner is responsible for all other costs Such costs may include but are not limited to a Labor charges for service removal repair or reinstallation of the water heater or any component part b Shipping delivery handling and administrative charges for forwarding the new heater or replacement part from the nearest distributor and returning the claimed defective heater or part to such distributor c All cost necessary or incidental for any material and or permits required for installation of the replacement 5 LIMITATIONS ON IMPLIED WARRANTIES Implied warranties including the warranty of merchantability imposed on the sale of this heater under state law are limited to one 1 year duration for the heater or any of its parts Some states do not allow limitations on how long an implied warranty lasts so the above limitation may not apply to you 6 CLAIM PROCEDURE Any claim under the warranty should be initiated with the dealer who sold the water heater or with any other dealer handling the warrantor s products If this is not practicable the owner should contact U S Customers Canadian C
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296. used ahead of the pump When installing the drain line note the following Plastic pipe or tubing must be used to connect the condensate drain to a suitable drain or condensate pump Do not use copper tubing iron or steel pipe for the condensate drain line e Condensate drain lines should be installed in conditioned areas only Drain lines installed in areas that are subject to freezing temperatures should be wrapped with a nationally recognized listed heat tape and or approved insulation for freeze protection Install per manufacturer s instructions e Do not common drain with the temperature and pressure relief valve or the condensate line from an air conditioner evaporator Coil 23 Slope the condensate drain toward the inside floor drain or condensate pump The condensate drain line and connection to the drain piping must comply with all local codes HIGH ALTITUDE INSTALLATIONS A WARNING e Special consideration must be taken with installations above 10 100 feet 3 078 m Please contact an AO Smith qualified service agent to obtain the proper setup and instructions before lighting Failure to implement the proper setup will result in improper and inefficient operation of the appliance resulting in production of increased levels of carbon monixide gas in excess of the safe limits which could result in serious personal injury or death Breathing carbon monoxide can cause brain damage or death Always read and
297. ustomers A O Smith Corporation A O Smith Enterprises Ltd 500 Tennessee Waltz Parkway 599 Hill Street West Ashland City TN 37015 Fergus ON N1M 2X1 Telephone 1 800 323 2636 Telephone 1 888 599 2837 a The warrantor will only honor replacement with identical or similar water heater or parts thereof which are manufactured or distributed by the warrantor b Dealer replacements are made subject to in warranty validation by warrantor 7 DISCLAIMERS NO OTHER EXPRESS WARRANTY HAS BEEN OR WILL BE MADE IN BEHALF OF THE WARRANTOR WITH RESPECT TO THE MERCHANTABILITY OF THE HEATER OR THE INSTALLATION OPERATION REPAIR OR REPLACEMENT OF THE WATER HEATER THE WARRANTOR SHALL NOT BE RESPONSIBLE FOR WATER DAMAGE LOSS OF USE OF THE UNIT INCONVENIENCE LOSS OR DAMAGE TO PERSONAL PROPERTY OR OTHER CONSEQUENTIAL DAMAGE THE WARRANTOR SHALL NOT BE LIABLE BY VIRTUE OF THIS WARRANTY OR OTHERWISE FOR DAMAGE TO ANY PERSONS OR PROPERTY WHETHER DIRECT OR INDIRECT AND WHETHER ARISING IN CONTRACT OR TORT a Some states do not allow the exclusion or limitation of the incidental or consequential damage so the above limitations or exclusions may not apply to you b This warranty gives you specific legal rights and you may also have other rights which vary from state to state Fill in the following for your own reference Keep it Registration is not a condition of warranty The model and serial number are found on the heater s rating plate Date Installed Mod
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300. xceeded the maximum number of 90 elbows or wrong pipe size used in the vent piping system Excessive wind outdoors pressurizing the vent system piping Excessive negative air pressure in the installed space 55 Ignition Failure Fault occurred 2 mins ago The water heater has failed to ignite the burner Call a service professional Your Company Name Here press DOWN for more BACK ADVANCED Blocked Exhaust Fault occurred 2 mins ago The exhaust is blocked or restricted Ensure condensate hose is draining Call a service professional Your Company Name Here press DOWN for more BACK ADVANCED FAULT AND ALERT MESSAGES CONT Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service technician in your area POSSIBLE CAUSES CHECK REPAIR DISPLAYED FAULT ALERT MESSAGE The control system has detected the Blower Prover Switch contacts are closed when they should be open at the beginning of a heating cycle Pinched shorted Blower Prover Switch wiring Jumper wire connected to the Blower Prover Switch remove jumper wire Jumper wires must never be used read all Warnings Excessive wind outdoors pressurizing the vent system piping Excessive negative air pressure in the installed space The control system has detected the Blower Prover Switch contacts are remaining open after the control system has energized the Combustion Blow
301. xhaust Switch 50 GALLON UNIT Blocked Intake Switch Blower Prover Switch 75 GALLON UNIT Figure 2 BLOWER PROVER SWITCH The Blower Prover Switch is provided on the heater to verify that the fan is operating It is a positive pressure switch whose electrical contacts are normally open When the fan increases the pressure in the burner the pressure switch will allow the electrical contacts to close The pressure switch is connected to the blower pressure tap by a piece of tygon tubing This tubing must be connected in order for the switch to change the electrical contacts The controller requires that the electrical contacts on this air flow switch be open before it will allow the blower to come on 13 BLOCKED EXHAUST SWITCH The Blocked Exhaust Switch is set up to shut the unit off when a build up of positive pressure in the exhaust vent pipe occurs This switch is a positive pressure switch that requires an increase in pressure to change the electrical contacts from normally closed to open When this switch prevents the unit from igniting most likely the exhaust is blocked by some means Check to see if the condensate is allowed to flow freely from the exhaust elbow and for obstructions in the exhaust venting and exhaust vent terminal Also verify that the vent length does not exceed the maximum allowed as shown in the Vent Section of this manual BLOCKED INTAKE SWITCH The Blocked Intake Switch is set up to shut the unit
302. xisting power vented heater in pre existing venting a thorough inspection of existing venting system must be performed prior to any installation work Verify that correct material as detailed above has been used and that the minimum or maximum vent lengths and terminal location as detailed in this manual have been met Carefully inspect the entire venting system for any signs of cracks or fractures particularly at joints between elbows and other fittings and straight runs of vent pipe Check system for signs of sagging or other stresses in joints as a result of misalignment of any components in the system If any of these conditions are found they must be corrected in accordance with the venting instructions in this manual before completing installation and putting the water heater into service NOTE For water heaters in locations with high ambient temperatures above 100 F 38 C it is recommended that CPVC or Polypropylene or ABS pipe and fittings be used All vent exhaust pipes must be pitched a minimum of a 1 4 per foot back to the water heater to allow drainage of condensation Never operate the water heater unless it is vented to the outdoors The instructions in this section of the manual must be followed to avoid choked combustion or recirculation of flue gases Such conditions cause sooting of the combustion chamber burners and flue tubes and creates a risk of asphyxiation For direct vent application where combustion air mig
303. y efficient water heater BY THIS WATER HEATER We appreciate your confidence in our products ALL TECHNICAL AND WARRANTY QUESTIONS SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED IF YOU ARE UNSUCCESSFUL CALL THE TECHNICAL SUPPORT PHONE NUMBER SHOWN ON THE WATER HEATER LABELING KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED PRINTED 0114 326468 000 TABLE OF CONTENTS SAFE INSTALLATION USE AND SERVICE 9 APPROVALS 3 GENERAL SAFETY INFORMATION 4 Precautions genee eege 4 Grounding Instructions E 4 Hydrogen Gas Flammable 4 INTRODUCTION 7 Abbreviations Used 7 Qualifications MENTI NOM 7 ICOMM amp BACnet Compaltlible 7 Preparing For The Installation 7 DIMENSIONS AND CAPACITY DATA 8 Rough In Dimensions 50 Gallon Unit 8 Rough In Dimensions 75 Gallon Unit 8 FEATURES AND COMPONENTS 10 Controls And Switches 13 INSTALLA
304. y electric switch water Immediately call a qualified service technician do notuse any phone in your building to inspect the appliance and to replace any part of the Immediately call your gas supplier from a neighbor s control system and any gas control which has been Phone Follow the gas supplier s instructions under water 5 Set the ON OFF switch on the control box to x the OFF position E 6 This appliance is equipped with a ignition Operating Set Point 120 F device which automatically lights the burner DO NOT TRY TO LIGHT THE BURNER BY HAND B lt e 1 Wait five 5 sas CM clear out any gas If you smell gas STOP Follow B in the safety inform atioftT above on this label If you dont smell gas go to the next step 8 Set the ON OFF switch on the control box to the ON postition 9 Set thermostat to desired setting ENABLE DISABLE ON OFF SWITCH CAUTION Hotter water increases the risk of dh scalia injury Consult the instruction STOP Read the safety information above manual before changing temperature on this label 10 If the appliance will not operate follow the Turn on all electrical power to the appliance instructions TO TURN OFF GAS TO e APPLIANCE and call your service Set Te switch on the control panel to technician or gas supplier the ON position WARNING TURN OFF ALL ELECTRIC Set the thermostat to lowest setting POWER BEFORE SERVICING Set the thermostat to lowe
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306. ystem If Polypropylene vent is not required by your local code you may use either PVC or CPVC pipes for your water heater that allows non metallic venting material installations Polypropylene vent systems do not use cement to connect the pipe and elbow sections but use a push together gasket seal method Do not attempt to connect Polypropylene with sealant cement All vent connections MUST be secured by the vent manufacturer s joint connector The installer must use a specific vent starter adapter at the flue connection The adapter is supplied by the vent manufacturer to adapt to its vent system In order to be in full compliance with UL 1738 or ULC S636 and to meet the requirements of the water heater manufacturer you must use the metal joint connector rings available from the Polypropylene vent manufacturer to stiffen the joints of 2 and 3 diameter pipes Table 5 M amp G Duravent PolyPro Flue Outlet Adapter Connector Elbow Vent Material Terminal s 2PPS amp 2PPS BG for Exhaust 2PPS AD PPS PAC 2PPS LB 2PPS E90 2 5 2PPS E90 A 2PPS BG for Intake Direct Vent only 3PPS amp 3PPS BG for Exhaust 3PPS AD PPS PAC 3PPS LB 3PPS E90 5 3PPS E90 amp 3PPS BG for Intake Direct Vent only Table 6 Centrotherm InnoFlue SW Flue Outlet Adapter Cone tar Elbow Vent Material Terminal s 7 IAFCO2 IANSO2 ISELLO287 ISVLO2 ISELLO287 amp IASPPO2 for Intake Direct Vent only ISVLO2 amp IASPPO2 for Exh

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