Part number GL-E223-ADOC 0311 This manual must only be used by a qualified heating installer/service technician. BEFORE installing, read all instruc- tions in this manual and all other information shipped with the water heater. Perform steps in the order given. Failure to comply could result in severe personal injury, death or substantial property damage. • Installation • Startup • Maintenance • Parts Product Manual Indirect-Fired Water Heaters User — Read important user safety information found on page 3, page 24 and page 25. Installation and service should only be performed by a qualified service technician. Retain this manual for future reference. ® ® TM
44
Embed
Product Manual • Maintenance • Startup • Parts · and boiler piping hook-ups. 3. Keeping the distance between boiler and water heater short will: • reduce piping heat loss.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
User — Readimportantusersafetyinformationfoundonpage3,page24andpage25.Installationandserviceshouldonlybeperformedbyaqualifiedservicetechnician.Retainthismanualforfuturereference.
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AQUA PLUS indirect-fired water heaters — Product Manual
systems.Inhibitedpropyleneglycolisrecommended.• Followboilermanualinstructionsforantifreezeusage.• Do not use automotive, ethylene glycol or petroleum-
• Install the water heater so if the tank or any connectionsshould leak, the water flow will not cause damage to areanearwaterheater,ortolowerfloorsofstructure.Whensuchlocationscannotbeavoided,installasuitabledrainpanunderwaterheater.Drainpansareavailableatyourlocalplumbingsupplystore.
Whencallingorwritingaboutthewaterheater—Pleasehavethewaterheaterse-rialnumberfromtheserialnumberlabel,located on the back side of the waterheater,adjacenttotheratingplate.
Any claims for damage or shortage inshipment must be filed immediatelyagainstthetransportationcompanybytheconsignee.
Hazard definitionsThefollowingdefinedtermsareusedthroughoutthismanualtobringattentiontothepresenceofhazardsof various risk levels or to important informationconcerningthelifeoftheproduct.
Indicates presence of hazards that willcause severe personal injury, death orsubstantialpropertydamage.
Indicates presence of hazards that cancause severe personal injury, death orsubstantialpropertydamage.
Indicates presence of hazards that willor cancauseminorpersonal injuryorpropertydamage.
Indicatesspecialinstructionsoninstalla-tion,operationormaintenancethatareimportant but not related to personalinjuryorpropertydamage.
This manual provides installation andoperation guidelines forWeil-McLainAQUA PLUS indirect water heaters.Theinstallerisresponsibleforensuringthattheinstallationcomplieswiththismanual, the boiler manual and all ap-plicablecodes.
Massachusetts installations — The
water heater must be installed by a li-
censed plumber.The installation must
follow all Massachusetts code require-
ments.Thedomesticwaterpipingmust
comply with the piping shown in this
manual. See“Domestic water piping,”
page6,fordetailsandcoderequirements.
PartnumberGL-E223-ADOC0311 3
AQUA PLUS indirect-fired water heaters — Product Manual
• Ifanyoneusinghotwaterinthebuildingfitstheabovedescription,orifstatelawsorlocalcodes require certain water temperatures athotwatertaps,youmusttakespecialprecau-tions:
Protection must be taken against excessive tem-perature and pressure! — Installation of a tem-perature & pressure (T&P) relief valve (provided with water heater) and a thermostatic mixing valve (provided by installer) is required.
Domestic water piping requirements1. Installunionsonallpipingforeasyremovalofwaterheater.
2. Usedielectric unions or couplingstoprotecthotandcoldwaterfittingsfromcorrosionwhenconnectingdissimilarmaterialssuchascopperandgalvanizedironpipe.
3. When the supply pressure is higher than 70 PSIG, install apressurereducingvalveoncoldwatersupplylinetopreventwaterlossthroughT&Preliefvalve.Athermalexpansiontankisalsorequired.
4. Ifthewaterheaterwillreplaceatanklesscoilintheboiler,discon-nectpipingtocoilorremovecoil fromboilerandreplacewitha cover plate.Allow water to drain from coil. Do not plug thetanklesscoil.
Studies have indicated that dangerous bacteria,including legionella pneumophila, can form inthe potable water distribution system if certainminimumwatertemperaturesarenotmaintained.Contact your local health department for moreinformation.
Water heater operating restrictions1. Readtheoperatinglimitsunder“Operatingrestrictions,”page3.
Magnesium anode—Thewaterheaterisequippedwithamagnesiumsacrificialanode.Theanodemayerodeovertime,andshouldbeinspectedatleastonceannually,onlybyaqualifiedservicetechnician.Forinstallationswithalikelihoodofpoorwaterconditions,theanodeshouldbeinspectedatleasteverysixmonths.Failuretocomplycouldresultinlossofprotectionbytheanode,causingpossible severe personal injury, death or substantialpropertydamageduetowaterheaterleakage.
Boiler water restrictions1. ReadtheWARNINGSunder“Boilerwaterrestrictions,”page3.
PartnumberGL-E223-ADOC0311 5
AQUA PLUS indirect-fired water heaters — Product Manual
Domestic water piping
Figure 2 DHW pipingPiping overview
THERMAL ExPANSIoN TANk — If abackflowpreventer,checkvalve,orpres-surereducingvalveispipedoncoldwaterinletofwaterheater,youmustinstallanexpansiontankoncoldwatersupplylineto prevent normal thermal expansionfromrepeatedlyforcingopenT&Preliefvalve.
TheT&Preliefvalveisnotintendedforconstantduty,suchasreliefofpressuredue to repeated normal system expan-sion.Refertoexpansiontankmanufac-turer’sinstructionsforpropersizing.
Failuretocomplycouldresultinseverepersonal injury, death or substantialpropertydamage.
General applications 1. Figure2—Thispipingconfigurationcanbeusedin
AQUA PLUS indirect-fired water heaters — Product Manual
Domestic water piping (continued)
LEGENDforFigure2,page6
Domesticwatersuppliedtofixturesthatcouldposean injuryhazarddue tohigh temperature, suchasshowers and faucets, should be equipped with atemperatureregulatingdevice,suchasananti-scald mixing valve.
When the supply pressure is higher than 70 PSIG,install a pressure reducing valve on cold watersupplylinetopreventwaterlossthroughT&Preliefvalve.Athermalexpansiontankisalsorequired.
DonotinstallanyvalvebetweenT&Preliefvalveandtank connection, or on T&P relief valve dischargepiping.DonotplugT&Preliefvalveoritsdischargepiping.ImproperplacementandpipingofT&Pre-liefvalvecancauseseverepersonalinjury,deathorsubstantialpropertydamage.
11Temperature adjustment knob
12Anode access
• Theanode is speciallymade for thiswaterheater.UseonlytheanodeavailablefromWeil-McLain,aslistedinReplacementparts.
13Mixing valve — —RECoMMENDED
• See Replacement parts for thermostatic mixing valvesavailablefromWeil-McLain.
14Domestic cold water supply
When the water supply pressure is higher than70 PSIG, install a pressure-reducing valve on thecoldwater supply line toprevent leakage fromtheT&Preliefvalve.Athermalexpansiontankisalsorequired.
15Domestic mixed-temperature water supply to system (whenused—requiresmixingvalve)
16Domestic high-temperature hot water supply to system
17Heat trap loops (12” minimum) —
18Isolation valves
19Thermal expansion tank —
• REQUIREDifcoldwaterlineisequippedwithabackflowpreventerorpressurereducingvalve—seeExPANSIoN TANk WARNINGonpage6.
Maintaining domestic water temperature in the supply piping
1. Recirculationisusedtoreducewaittimeforwateruse,tominimize hot water and energy waste caused during thewaitingperiod, and to prevent degradation of the systemsupplywatertemperature.ASPErecommendsrecirculationwhenthedistancefromthewaterheatertothefurthestfix-tureexceeds100feetorthetimelagforhotwatertoreachafixture(s)exceeds30seconds.
2. Consult local codes andAmerican Society of PlumbingEngineers(ASPE)DomesticWaterHeatingDesignManual,1998,forfurtherinformation.
a. Thereturnpipingwillalmostalwaysbesmallerthanthesupplypiping,butshouldneverbesmallerthan½”topreventproblemswiththecirculator.
4. Makeprovisionforremovalofairinallreturnlines.Wherethe returns cannot be vented by topmost fixtures in thesystem,installautomaticairventingatthetopofthereturnpiping.
Connecting to the water heater
1. Install the domestic water components as shown in Fig-ure2,page6.
3. Whentemperatureataquastat#2falls10°belowtemperaturetobemaintained—Circulatorison.There isflowthrough#6equal to theminimumrequiredbythemixingvalve,flowthrough#3and#4 equals the flow of the circulator. There is noflowthrough#5.
4. No aquastat #2 — Circulator runs continuously. Small amount ofwaterwillpassthroughmixingvalve.Eventuallyallhotwaterisflow-ing through valve. Recirculated water through cold port, hot waterthroughhotport.
• WMCR zone controller,optional priority — Fig-ure18,page21.
1. Thisdrawingisconceptualonly.Itshowsrepresenta-tive piping componentsand layout.Weil-McLaindoesnotrepresentthatthisdrawingmeetsanypartic-ularmechanicalorbuild-ingcodes.Theinstallerisresponsible for inclusionof all required safety de-vices, or other miscella-neouspipinghardwarenotshown on drawing. Theinstallerisresponsibleforpropersizing/selectionofallhardwareshownonthisdiagram.
2. Seeboilermanualforspe-cific details on installingtheboiler.
GV90+ or Ultra gas boilers:
Do NoTapplythedrawingsinthismanual.Referonlytotheboilermanual.
Recommended flow rate and minimum boiler-side pipe size
Heater model GPM Pipe
sizeHeater model GPM Pipe
size
35 8 1” 85 14 1¼” *
45 8 1” 105 14 1¼” *
55 8 1” Requires 1¼”x1” reducers at water heater
Boiler-side piping
PartnumberGL-E223-ADOC0311 11
AQUA PLUS indirect-fired water heaters — Product Manual
Boiler-side piping (continued)
Figure 8 Zoning with circulators — primary/secondary system piping
Notes
• Placecirculatorsatbegin-nings of zones. Placingthemattheendsofzonescouldresultinheatingidlezones.
• Size manifold piping fortotal flow of all zone cir-culators.
• WMCR zone controller,optional priority — Fig-ure18,page21.
1. Thisdrawingisconceptualonly.Itshowsrepresenta-tive piping componentsand layout.Weil-McLaindoesnotrepresentthatthisdrawingmeetsanypartic-ularmechanicalorbuild-ingcodes.Theinstallerisresponsible for inclusionof all required safety de-vices, or other miscella-neouspipinghardwarenotshown on drawing. Theinstallerisresponsibleforpropersizing/selectionofallhardwareshownonthisdiagram.
2. Seeboilermanualforspe-cific details on installingtheboiler.
GV90+ or Ultra gas boilers:
Do NoTapplythedrawingsinthismanual.Referonlytotheboilermanual.
Recommended flow rate and minimum boiler-side pipe size
Heater model GPM Pipe
sizeHeater model GPM Pipe
size
35 8 1” 85 14 1¼” *
45 8 1” 105 14 1¼” *
55 8 1” Requires 1¼”x1” reducers at water heater
PartnumberGL-E223-ADOC031112
AQUA PLUS indirect-fired water heaters — Product Manual
Boiler-side piping (continued)
Figure 9 Zoning with zone valves — direct-connected system piping
Notes
• Placecirculatorsatbegin-nings of zones. Placingthemattheendsofzonescouldresultinheatingidlezones.
• Size manifold piping fortotal flow of all zone cir-culators.
• WMZV zone controller,optional priority — Fig-ure19,page22.
1. Thisdrawingisconceptualonly.Itshowsrepresenta-tive piping componentsand layout.Weil-McLaindoesnotrepresentthatthisdrawingmeetsanypartic-ularmechanicalorbuild-ingcodes.Theinstallerisresponsible for inclusionof all required safety de-vices, or other miscella-neouspipinghardwarenotshown on drawing. Theinstallerisresponsibleforpropersizing/selectionofallhardwareshownonthisdiagram.
2. Seeboilermanualforspe-cific details on installingtheboiler.
GV90+ or Ultra gas boilers:
Do NoTapplythedrawingsinthismanual.Referonlytotheboilermanual.
Recommended flow rate and minimum boiler-side pipe size
Heater model GPM Pipe
sizeHeater model GPM Pipe
size
35 8 1” 85 14 1¼” *
45 8 1” 105 14 1¼” *
55 8 1” Requires 1¼”x1” reducers at water heater
PartnumberGL-E223-ADOC0311 13
AQUA PLUS indirect-fired water heaters — Product Manual
Boiler-side piping (continued)
Figure 10 Zoning with zone valves — primary/secondary system piping
Notes
• Placecirculatorsatbegin-nings of zones. Placingthemattheendsofzonescouldresultinheatingidlezones.
• Size primary piping fortotal flow of all zone cir-culators.
• WMZV zone controller,optional priority — Fig-ure19,page22.
1. Thisdrawingisconceptualonly.Itshowsrepresenta-tive piping componentsand layout.Weil-McLaindoesnotrepresentthatthisdrawingmeetsanypartic-ularmechanicalorbuild-ingcodes.Theinstallerisresponsible for inclusionof all required safety de-vices, or other miscella-neouspipinghardwarenotshown on drawing. Theinstallerisresponsibleforpropersizing/selectionofallhardwareshownonthisdiagram.
2. SeeBoilerManualforspe-cific details on installingtheboiler.
GV90+ or Ultra gas boilers:
Do NoTapplythedrawingsinthismanual.Referonlytotheboilermanual.
Recommended flow rate and minimum boiler-side pipe size
Heater model GPM Pipe
sizeHeater model GPM Pipe
size
35 8 1” 85 14 1¼” *
45 8 1” 105 14 1¼” *
55 8 1” Requires 1¼”x1” reducers at water heater
PartnumberGL-E223-ADOC031114
AQUA PLUS indirect-fired water heaters — Product Manual
Boiler-side piping (continued)
Figure 11 Dedicated single-boiler piping
Notes
• Placecirculatorsatbegin-nings of zones. Placingthemattheendsofzonescouldresultinheatingidlezones.
• Size manifold piping fortotal flow of all zone cir-culators.
• Connectwaterheaterther-mostat wires to boiler’sT-Tterminalsorheatde-mandconnection.
1. Thisdrawingisconceptualonly.Itshowsrepresenta-tive piping componentsand layout.Weil-McLaindoesnotrepresentthatthisdrawingmeetsanypartic-ularmechanicalorbuild-ingcodes.Theinstallerisresponsible for inclusionof all required safety de-vices, or other miscella-neouspipinghardwarenotshown on drawing. Theinstallerisresponsibleforpropersizing/selectionofallhardwareshownonthisdiagram.
2. Seeboilermanualforspe-cific details on installingtheboiler.
GV90+ or Ultra gas boilers:
Do NoTapplythedrawingsinthismanual.Referonlytotheboilermanual.
Recommended flow rate and minimum boiler-side pipe size
Heater model GPM Pipe
sizeHeater model GPM Pipe
size
35 8 1” 85 14 1¼” *
45 8 1” 105 14 1¼” *
55 8 1” Requires 1¼”x1” reducers at water heater
PartnumberGL-E223-ADOC0311 15
AQUA PLUS indirect-fired water heaters — Product Manual
Boiler-side piping (continued)
Figure 12 Multiple water heaters — domestic water piping
Figure 13 Alternate methods of revers-return piping and Easy-Fit® Manifold detail
Failure to install automaticmixing valve where recom-mended can result in severepersonalinjuryordeath.
1. Thisdrawingisconceptualonly.Itshowsrepresenta-tive piping componentsand layout.Weil-McLaindoesnotrepresentthatthisdrawingmeetsanypartic-ularmechanicalorbuild-ingcodes.Theinstallerisresponsible for inclusionof all required safety de-vices, or other miscella-neouspipinghardwarenotshown on drawing. Theinstallerisresponsibleforpropersizing/selectionofallhardwareshownonthisdiagram.
2. Wirewaterheaterthermo-stats in series when con-nectingtoboilercontrollerorboilerT-Tterminals.
3. Install automatic mixingvalveateither thesystemhot water connection orateachwaterheater.
AQUA PLUS indirect-fired water heaters — Product Manual
Boiler-side piping (continued)
Figure 14 Multiple water heaters and dedicated multiple boilers — boiler water piping
Notes
• See legend and details inFigure12,page16.
1. Thisdrawingisconceptualonly.Itshowsrepresenta-tive piping componentsand layout.Weil-McLaindoesnotrepresentthatthisdrawingmeetsanypartic-ularmechanicalorbuild-ingcodes.Theinstallerisresponsible for inclusionof all required safety de-vices, or other miscella-neouspipinghardwarenotshown on drawing. Theinstallerisresponsibleforpropersizing/selectionofallhardwareshownonthisdiagram.
2. Seeboilermanualforspe-cific details on installingtheboiler.
GV90+ or Ultra gas boilers:
Do NoTapplythedrawingsinthismanual.Referonlytotheboilermanual.
PartnumberGL-E223-ADOC0311 17
AQUA PLUS indirect-fired water heaters — Product Manual
Connecting to a low-pressure steam boiler
Special considerationsWhendesigningsteamanddomestichotwatersystems,therearesomekeyissuesthatmustbetakenintoconsiderationduringtheinitialde-signphase.Bydesigningthesystemproperlyfromthestart,youcanavoidproblemsandhaveahotwaterloopinasteamboilersystem.
• The domestic water demand should preferably not exceed 1/3ofthesteamboilercapacity.Largerdemandmaycausedifficultyobtainingsteamasneeded.
Figure 15 Typical wiring for connection to low-pressure steam boiler
Install the Honeywell L4006A aquastat in the boiler, be-low the water line. Set for a temperature of 180 to 190°F to control boiler temperature when there is no call for steam heating.
Valve 7, the memory stop valve, mustbe supplied, piped and adjusted as in-structed.Thisvalveallowscoolerreturnwater to mix with the hot water fromthesteamboiler.Thevalveissettoyieldapproximately180°Fwaterenteringthecirculator. Higher temperature watercouldcausecavitationinthecirculator,damaging the impeller and shorteningcirculatorlife.
DONOTconnectthepipingtotheboil-er’smudleg.Thiswouldprobablycauseexcessive sediment to enter the waterheaterpiping,damagingthecirculator.
Thestrainerinthecirculatorsuctionlinemust be serviced regularly. NOTE thatnoisefromthecirculatorisalikelysignthatthestrainerisrestrictingcirculatorflow,causingcavitation.
PartnumberGL-E223-ADOC031118
AQUA PLUS indirect-fired water heaters — Product Manual
Connecting to a low-pressure steam boiler (continued)
Figure 16 Low pressure steam boiler application — Domestic water heating using water pumped from steam boiler
Use memory stop valve7 toblend some of the water re-turningtotheboilerwiththehot water coming from theboiler. This will reduce thepossibilityofflashing(cavita-tion)inthecirculator.Slowlyopenvalve7untiltemperaturegauge8reads200°F.
NOTE—If the boiler water level should drop below ei-ther the water heater boiler water supply or return line, the filling procedure will have to be repeated.
1. Thisdrawingisconceptualonly.Itshowsrepresenta-tive piping componentsand layout.Weil-McLaindoesnotrepresentthatthisdrawingmeetsanypartic-ularmechanicalorbuild-ingcodes.Theinstallerisresponsible for inclusionof all required safety de-vices, or other miscella-neouspipinghardwarenotshown on drawing. Theinstallerisresponsibleforpropersizing/selectionofallhardwareshownonthisdiagram.
2. Seeboilermanualforspe-cific details on installingtheboiler.
Filling the piping1. Parts of the boiler water piping to the
Step 2 Closevalve3andopenvalve4.Con-nect a cold water supply hose tovalve3.Connectahosefromvalve4toadrainablelocation.
Step 3 Closevalve10.Openvalve7.
Step 4 Openvalve3.Waterwillflowthroughvalve 7 and out through valve 4 todrain.Letwater rununtil all airhasbeen removed from the line. Closevalve4.Thenclosevalve3.
Step 5 Closevalve7.Thenopenvalve10.
Step 6 Openvalve3.Waterwillflowthroughthe circulator line, the water heatercoil and the return piping, then outthroughvalve4todrain.Letwaterrununtilallairhasbeenremovedfromtheline.Closevalve4.Thenclosevalve3.Removehoses.
Step 7 Follow the instructions in“Waterheater filling and start-up,” page 23,tofill thedomesticwatersideof thewaterheater.
Step 8 Open valve 7 about ¼ turn for aninitialsetting.
Step 9 Open isolation valves 5and 6. Makesure the boiler water level is correctpertheboilermanual.
AQUA PLUS indirect-fired water heaters — Product Manual
Wiring — zoning with circulators
Notes
• Also refer to theWMCRmanualandWeil-McLain Boiler Zone Wiring Guideforfurtherdetails.
• Refer toWiring require-mentsonpage20.
System piping
• Figure7,page11
• Figure8,page12
1. Thisdrawingisconceptualonly.Itshowsrepresenta-tivecomponentsandwir-ing.Weil-McLaindoesnotrepresentthatthisdrawingmeets anyparticularme-chanicalorbuildingcodes.The installer is respon-sible for inclusion of allrequiredsafetydevices,orother miscellaneous pip-ing hardware not shownondrawing.The installeris responsible for propersizing/selection of allhardware shown on thisdiagram.
2. Followcomponentmanu-facturer’s instructions forinstallation of all itemsshown.
3. Seeboilermanualforspe-cific details on installingtheboiler.
Figure 18 Typical wiring — zoning with circulators — DHW priority with Weil-McLain WMCR Circulator Zone Controller
GV90+ or Ultra gas boilers:
Do NoTapplythedrawingsinthismanual.Referonlytotheboilermanual.
PartnumberGL-E223-ADOC0311 21
AQUA PLUS indirect-fired water heaters — Product Manual
Wiring — zoning with zone valves
Notes
• Also refer to theWMZVmanualandWeil-McLain Boiler Zone Wiring Guideforfurtherdetails.
1. Thisdrawingisconceptualonly.Itshowsrepresenta-tivecomponentsandwir-ing.Weil-McLaindoesnotrepresentthatthisdrawingmeets anyparticularme-chanicalorbuildingcodes.The installer is respon-sible for inclusion of allrequiredsafetydevices,orother miscellaneous pip-ing hardware not shownondrawing.The installeris responsible for propersizing/selection of allhardware shown on thisdiagram.
2. Followcomponentmanu-facturer’s instructions forinstallation of all itemsshown.
3. Seeboilermanualforspe-cific details on installingtheboiler.
Figure 19 Typical wiring — zoning with zone valves — DHW priority with Weil-McLain WMZV Zone Valve Zone Controller
GV90+ or Ultra gas boilers:
Do NoTapplythedrawingsinthismanual.Referonlytotheboilermanual.
PartnumberGL-E223-ADOC031122
AQUA PLUS indirect-fired water heaters — Product Manual
Water heater filling and start-up
The installation and water chemistry must meet therequirementsbelow.Failuretocomplycouldresultindamage to the water heater, causing possible severepersonalinjury,deathorsubstantialpropertydamage.
Boiler water restrictions• Thoroughlyflush theboiler system(withoutwaterheatercon-
• Models AQUA PLUS-32, 42 and 52 — do not exceed 12 GPM.
• Models AQUA PLUS-80 and 105 — do not exceed 16 GPM.
Filling the domestic water tank1. Fillthedomesticwatertankwithfreshwaterthatmeetsthechemistry
requirementsabove.
2. Donotexceedafillpressureof70PSIG.
Whenthewatersupplypressureishigherthan70PSIG,makesure that a pressure-reducing valve is installed on the coldwatersupplylinetopreventleakagefromtheT&Preliefvalve.Athermalexpansiontankisalsorequired.
3. Ventthepipingasnecessarytoremoveanytrappedair.
Start-up and operation1. Followthe“Start-upchecklist,”page23toprepareforstart-up.
Start-up checklist
❏❏ Verify that T&P relief valve is properly installedandpipedasdirectedinthismanualandperlocalcoderequirements.
• Ifanyoneusinghotwaterinthebuildingfitstheabovedescription,orifstatelawsorlocalcodes require certain water temperatures athotwatertaps,youmusttakespecialprecau-tions:
Protection must be taken against excessive tem-perature and pressure! — Installation of a tem-perature & pressure (T&P) relief valve (provided with water heater) and a thermostatic mixing valve (provided by installer) is required.
Water heater temperature adjustment
General notes • Householdwaterusagepatternswillaffectwatertemperatureat
anyfaucetorshower.• Occasionally check temperature at each point of use, then
Studieshaveindicatedthatdangerousbacteria,includ-ing legionella pneumophila,canforminthepotablewater distribution system if certain minimum watertemperatures are not maintained. Contact your localhealthdepartmentformoreinformation.
Setting the thermostat1. Thewaterheaterthermostatisfactorysettoitslowesttemperature.
Thismayormaynotbesuitableforyourneeds.
2. Turn thermostat knob clockwise to increase water tempera-ture.
3. Turnthermostatknobcounter-clockwise to reducewatertem-perature.
Checkwatersupplytemperatureatseveraloutletstoensurethe water temperature is acceptable for intended use andthatalltemperaturecontroldevicesarefunctioningproperly.Readpage3andverifythatallrequirementsaremetbytheinstallation.
❏❏ Manually operate T&P relief valve at least onceayear(seeFigure21).Thiswillreleasesomehotwater.Moveoperatinglevertoopenpositionforafewsecondsandthenmoveitback,allowingittosnapclosed.AfterT&Preliefvalveisoperated,if it continues to release water, close cold waterinlettowaterheaterimmediately.Followdraininginstructions, and replace the T&P relief valve. IfT&Preliefvalveweepsperiodically,itmaybeduetothermalexpansion.Installanexpansiontankifnotalreadyinstalled.
❏❏ Follow instructions on circulator to oil it, ifoil-lubricated.
❏❏ Follow instructions in“Inspect anode and waterheaterinterior,”page26.
Before operating the T&P reliefvalve,makesurenooneisinfrontoforaroundtheT&Preliefvalvedis-chargepiping.Hotdischargewatercancauseseverepersonalinjuryorsubstantialpropertydamage.
Plugging T&P relief valve or dis-charge piping can cause excessivepressureinthewaterheater,result-inginseverepersonalinjury,deathorsubstantialpropertydamage.
PartnumberGL-E223-ADOC0311 25
AQUA PLUS indirect-fired water heaters — Product Manual
Water heater maintenance (continued)
and their frequencies, including any not listed in the followingparagraphs. Figure 22 Inspection hatch assembly (hatch cover
Failuretoinspecttheanoderegularlyandreplaceifnecessarycouldresultindamagetothewaterheater,causing possible severe personal injury, death orsubstantialpropertydamage.
Inspect anode and water heater interior1. Closedomesticwaterisolationvalves.
4 Bottom plastic cap replacement kit (plastic cap and 4 screws)
35/45/55 633500030
85 633500031
105 633500032
5 Leveling leg replacement kit (4) All 633500036
6 Temperature & pressure relief valve kit
35/45/55 633500038
85/105 633500039
NS Inspection and service kit (includes inspection plate and anode seals) All 633500042
7 Inspection plate replacement kit All 633500044
8 Inspection hatch cover replacement kit All 633500046
9 Fitting grommet ¾”1”
633500064633500037
10 Anode cover All 633500048
NS Jacket replacement kit
35, Pewter 633500049
45, Pewter 633500050
55, Pewter 633500051
85, Pewter 633500052
105, Pewter 633500053
35, Gold 633500054
45, Gold 633500055
55, Gold 633500056
85, Gold 633500057
105, Gold 633500058
NS Mixing valve kit, 1" All 633500012
Replacement parts
Figure 24 Water heater replacement parts
PartnumberGL-E223-ADOC0311 39
AQUA PLUS indirect-fired water heaters — Product Manual
AHRI ratings
Model AQUA PLUS
AHRI certified ratings180°F boiler water entering | 58°F to 135°F domestic water
First Hour Rating
Continuous Draw Rating
Minimum Heat Output
Rate
Minimum Heat Source Flow Rate
Heat Source Friction Loss
First Draw Rating
Standy Loss The ratings in this table are certified by
AHRI. The conditions under which these ratings were obtained are listed below.
GPH GPH Btu/hr GPM Feet w.c. GPH Degrees F per hour
35 230.0 203.9 134,477 14.0 5.4 26.1 0.9
These ratings were obtained with a heat source output rate of 134,477 Btu/hr at a heat source flow rate of 14 gpm. Other results will be obtained under different conditions.
45 263.7 228.2 150,488 14.0 8.8 35.6 0.8
These ratings were obtained with a heat source output rate of 150,488 Btu/hr at a heat source flow rate of 14 gpm. Other results will be obtained under different conditions.
55 322.9 265.8 175,320 13.9 4.2 57.1 0.5
These ratings were obtained with a heat source output rate of 175,320 Btu/hr at a heat source flow rate of 13.9 gpm. Other results will be obtained under different conditions.
85 341.4 270.3 178,279 14.0 5.4 71.0 0.5
These ratings were obtained with a heat source output rate of 178,279 Btu/hr at a heat source flow rate of 14 gpm. Other results will be obtained under different conditions.
105 453.7 373.0 245,926 14.0 7.1 80.8 0.4
These ratings were obtained with a heat source output rate of 245,926 Btu/hr at a heat source flow rate of 14 gpm. Other results will be obtained under different conditions.
®
PartnumberGL-E223-ADOC031140
AQUA PLUS indirect-fired water heaters — Product Manual