Electric
Water Heaters
Use and Care Manual
Installation
Start-Up
Maintenance
Parts
Warranty
Staged Operation Models
Thismanualmustonlybeusedbyaqualifiedinstaller/servicetechnician.Readallinstructionsinthismanualbefore installing. Perform steps in the given order. Failure to do so could result in substantial property damage, severe personalinjury,ordeath.
CaliforniaProposition65Warning:ThisproductcontainschemicalsknowntotheStateofCaliforniatocausecancer, birthdefects,orotherreproductiveharm.
Westinghousereservestherighttomakeproductchangesorupdateswithoutnoticeandwillnotbeheldliablefor typographicalerrorsinliterature.
The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead by weight as required by the Safe Drinking Water Act, Section 1417.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
whl-026 Rev. 4.28.15
2
Thefollowingdefinedtermsareusedthroughoutthismanual tobringattentiontothepresenceofhazardsofvariousrisk levelsortoimportantproductinformation.
DANGER indicatesanimminentlyhazardoussituationwhich, ifnotavoided,willresultinseriouspersonalinjuryordeath.
WARNING indicatesapotentiallyhazardoussituationwhich,if notavoided,couldresultinpersonalinjuryordeath.
CAUTION indicatesapotentiallyhazardoussituationwhich,if notavoided,mayresultinmoderateorminorpersonalinjury.
CAUTION used without the safety alert symbol indicates apotentiallyhazardoussituationwhich,ifnotavoided,may resultinpropertydamage.
NOTICE isusedtoaddresspracticesnotrelatedtopersonal injury.
Foreword
This manual is intended to be used in conjunction with other literature provided with the water heater. This includes all related control information. It is important that this manual, all other documents included in this system, and additional publications including the Code for the Installation of Heat Producing Appliances (latest version), be reviewed in their entiretybeforebeginninganywork.
Installation should be made in accordance with the regulations of theAuthority Having Jurisdiction, local code authorities, and utility companies which pertain to this type of water heating equipment.
Authority HavingJurisdiction (AHJ) –TheAHJ may be a federal, state, local government, or individual such as a fire chief, fire marshal, chief of a fire prevention bureau, labor department or health department, building official or electrical inspector, or others having statutory authority. In some circumstances, the property owner or his/her agent assumes the role, and at government installations, the commanding officer or departmentalofficialmaybetheAHJ.
NOTE: Westinghouse reserves the right to modify product technicalspecificationsandcomponentswithoutpriornotice.
For the Installer
This water heater must be installed by qualified and licensed personnel. The installer should be guided by the instructions furnished with the water heater, and by local codes and utility companyrequirements.
Installations Must Comply With:
Local, state, provincial, and national codes, laws, regulations, andordinances.
ThelatestversionoftheNational Electrical Code, NFPA No. 70.
whl-026 Rev. 4.28.15
ForYour Records
Write the Product Model and Serial Numbers:
Model # ___________________________________________
Serial # ____________________________________________
These numbers are listed on the product ratings label. Keep this manual and information for future reference.
IMPORTANT SAFETY INSTRUCTIONS
When using electrical appliances, basic safety precautions to reduce the risk of fire, electric shock, or injury to persons shouldbefollowed,including:
1.READ ALL INSTRUCTIONS BEFORE USING THIS WATER HEATER.
2.This water heater must be grounded. Connect only to a properly grounded outlet. See Part 4 – Wiring, this manual, forgroundingdetails.
3.Install or locate this water heater only in accordance with theprovidedinstallationinstructions.
4.Usethiswaterheateronlyforitsintendeduseasdescribed inthismanual.
5.Donotoperatethiswaterheaterifithasbeendamagedor dropped.
8.Thiswaterheatershouldbeservicedonlybyqualifiedservice personnel. Contact the water heater installer or a qualified serviceagencyforexamination,repair,oradjustment.
SAVE THESE INSTRUCTIONS
Table of Contents |
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Part1-GeneralSafetyInformation |
3 |
A.WhenServicingtheWaterHeatingSystem |
3 |
B.HeaterWater |
3 |
C.FreezeProtection |
3 |
D.WaterTemperatureAdjustment |
3 |
Part2-PreparetheWaterHeater |
4 |
A.What’sintheBox |
4 |
B.LocatingtheWaterHeater |
4 |
C.WaterChemistryRequirements |
6 |
Part3-Piping |
7 |
A.Plumbing |
7 |
B.ThermalExpansion |
7 |
C.Condensation |
7 |
D.InsulationBlankets |
7 |
E.TemperatureandPressureReliefValve |
7 |
F.Scalding |
8 |
G.FillingtheHeater |
8 |
H.Applications |
9 |
Part4-Wiring |
9 |
Part5-InstallationChecklist |
10 |
Part6-Operation |
10 |
A.CombinationThermostatandHighLimitControl(ECO)10 |
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B.ThermostatAdjustmentandECOReset |
11 |
C.HeatingElementReplacementProcedure |
11 |
Part7-Maintenance |
12 |
Part8-Troubleshooting |
14 |
LimitedWarranty |
15 |
CustomerInstallationRecordForm |
17 |
Part 1 - General Safety Information
This water heater is approved for indoor installations only and is not intended for use as a pool heater. Clearance to combustiblematerials:0”top,bottom,sides,andback.Heater musthaveroomforservice:24”front,6”top,and6”sidesare minimum recommended service clearances. (A combustible door or removable panel is acceptable front clearance.) This water heater has been approved for closet installation and installation on combustible flooring. Do not install directly on carpeting. Install the water heater in a location where temperature and pressure relief valve discharge or a leak will notresultindamagetothesurroundingarea.Ifsuchalocation isnotavailable,installanauxiliarycatchpan.
Installer - Readallinstructionsinthismanualbeforeinstalling. Performstepsinthegivenorder.
User - This manual is for use only by a qualified heating installer/servicetechnician.Havethiswaterheaterserviced/ inspectedannuallybyaqualifiedservicetechnician.
FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE CAN RESULT IN SUBSTANTIAL PROPERTY DAMAGE,
SEVERE PERSONAL INJURY, OR DEATH.
NOTE: Ifthewaterheaterisexposedtothefollowing,donot operate.Immediatelycallaqualifiedservicetechnician.
1.Fire
2.Damage
3.Water
Failure to follow this information could result in property damage,severepersonalinjury,ordeath.
DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN SUBMERGED IN WATER. Immediately call a qualified service technician. The water heater MUST BE replaced if it has been submerged. Operating a previously submerged waterheatercouldresultinpropertydamage,severepersonal injury,ordeath.
NOTE: Water heater damage due to flood or submersion is consideredanActofGod,andISNOTcoveredunderproduct warranty.
NOTE: Obey all local codes. Obtain all applicable permits beforeinstallingthewaterheater.
NOTE: Install all system components and piping in such a manner that does not reduce the performance of any fire ratedassembly.
High heat sources (sources generating heat 100oF / 37oC or greater,suchasstovepipes,spaceheaters,etc.)maydamage plastic components of the water heater as well as plastic vent pipe materials. Such damages ARE NOT covered by warranty.Itisrecommendedtokeepaminimumclearanceof 8”fromhighheatsources.Observeheatsourcemanufacturer instructions, as well as local, state, provincial, and national codes, laws, regulations and ordinances when installing this waterheaterandrelatedcomponentsnearhighheatsources. Do not use this water heater for anything other than its intended purpose (as described in this manual). Doing so could result in property damage and WILL VOID product warranty.
3
UNCRATING THE WATER HEATER - Any claims for damage or shortage in shipment must be filed immediately against the transportationcompanybytheconsignee.
A. When Servicing the Water Heating System
Be sure to disconnect electrical power before performing service.Failuretodosocouldresultinelectricalshock,property damage,seriouspersonalinjury,ordeath.
NOTE: When inquiring about service or troubleshooting, reference the model and serial numbers from the water heater ratinglabel.
To avoid severe burns, allow water heater and associated equipmenttocoolbeforeservicing.
B. Heater Water
Do not use petroleum-based cleaning or sealing compounds in awaterheatingsystem.Gasketsandsealsinthesystemmaybe damaged.Thiscanresultinsubstantialpropertydamage.
Do not use “homemade cures” or “patent medicines”. Damage tothewaterheater,substantialpropertydamage,and/orserious personalinjurymayresult.
C. Freeze Protection
NOTE: Consider piping and installation when determining heaterlocation.Failureofthewaterheaterduetofreezerelated damageISNOTcoveredbyproductwarranty.
NEVERuseanytoxicchemical,includingautomotive,standard glycol antifreeze, or ethylene glycol made for hydronic (nonpotable)systems.Thesechemicalscanattackgasketsandseals in water systems, are poisonous if consumed, and can cause personalinjuryordeath.
D. Water Temperature Adjustment
If the water heater is going to have a set temperature above 120oF,itisrecommendedtouseanASSE1017ratedmixingvalve toavoidsevereburnsordeathfromscaldingtemperatures.
Households with small children, disabled, or elderly persons may require a 120oF or lower temperature setting to prevent severepersonalinjuryordeathduetoscalding.
Approximate Time / Temperature Relationships in Scalds
120oF |
Morethan5minutes |
125oF |
11/2to2minutes |
130oF |
About30seconds |
135oF |
About10seconds |
140oF |
Lessthan5seconds |
145oF |
Lessthan3seconds |
150oF |
About11/2seconds |
155oF |
About1second |
Table 1 - Approximate Time / Temperature Relationships in Scalds
whl-026 Rev. 4.28.15
4
Part 2 - Prepare the Water Heater
Remove all sides of the shipping crate to allow the heater to be movedintoitsinstallationlocation.
COLD WEATHER HANDLING - If the water heater has been stored in a very cold location (BELOW 0oF) before installation, handle with care until the components come to room temperature. Failure to do so could result in damage to the waterheater.
A. What’s in the Box
Componentsincludedwiththewaterheater:
•DrainValve
•TemperatureandPressureReliefValve
•Insulation
•CoverwithScrews
•HotWaterOutlet
•DipTube
•UseandCareManualandWarranty
NOTE: Somecomponentsmayshipfactoryinstalled.
B. Locating the Water Heater
Locatethewaterheaterwhereanyleakagefromthereliefvalve, related piping, tank, or connections will not result in damage to surrounding areas or lower floors of the building.The water heatershouldbelocatednearafloordrainorinstalledinadrain pan.LeakagedamagesARENOTcoveredbywarranty.
This water heater is certified for indoor use only. DO NOT INSTALLOUTDOORS.OutdoorinstallationsARENOTcovered by warranty. Failure to install the water heater indoors could resultinpropertydamage,severepersonalinjury,ordeath.
1.InstallationArea(MechanicalRoom)OperatingConditions
•Ensureambienttemperaturesarehigherthan32oF/0oC andlowerthan104oF/40oC
•Avoidcontinuouslyhighlevelsofhumidity
•Nevercloseexistingventilationopenings
NOTE: When installing in a zero clearance location, it may not be possible to read or view some product labeling. It is recommended to make note of the water heater model and serialnumber.
Theservicelifeofthewaterheater’sexposedmetallicsurfaces, such as the junction box, is directly influenced by proximity to damp and salty marine environments. In such areas higher concentration levels of chlorides from sea spray coupled with relative humidity can lead to degradation of water heater components.
Incorrect operating conditions can lead to damage to the heating system and put safe operation at risk. Ensure that the installation location adheres to the information included in this manual. Failure to do so could result in property damage, serious personal injury, or death. Failure of the water heater or components due to incorrect operating conditions IS NOT coveredbyproductwarranty.
2.Choose a location for the water heater as centralized to the piping and electrical system as possible.Also, locate the water heater and domestic water piping where it will not be exposed to freezing temperatures. All piping should be insulated. Additionally,placethewaterheatersothatthedrain,controls, andinlets/outletsareeasilyaccessible.
Figure 1 - Recommended Service Clearances - NOTE: Overhead View Not Representative of All Models
NOTE: Tosaveonheatingcosts andimproveenergyefficiency keep the distance between the water heater and fixtures to a minimum to reduce heat loss from excess piping and keep friction loss at a minimum. Ensure all water heater piping is properlyinsulatedtominimizeheatloss.
NOTE: If you do not provide the minimum clearances shown in Figure 1, it might not be possible to service the water heater withoutremovingitfromthespace.
whl-026 Rev. 4.28.15
5
Figure 2 - Dimensional Drawing - Staged Operation
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SpecificationsandDimensions |
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Water Temperature Ratings |
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Residential |
Storage |
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Safety |
Hot / Cold |
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Shipping |
Min. |
Max. |
High |
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B |
C |
D |
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Weight |
Delivered |
Delivered |
Temp. |
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Models |
Capacity |
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Inlets |
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(Lbs. Est.) |
Temp. |
Temp. |
Limit |
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WER052C2X*** |
52 |
53/4” |
581/4” |
663/4” |
191/2” |
UL174 |
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118 |
110oF |
150oF |
170oF |
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(43.3C) |
(65.5C) |
(76.6C) |
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Light |
Storage |
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Safety |
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Shipping |
Min. |
Max. |
High |
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Commercial |
A |
B |
C |
D |
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Weight |
Delivered |
Delivered |
Temp. |
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Capacity |
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3/4”NPT |
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Models |
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(Lbs. Est.) |
Temp. |
Temp. |
Limit |
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WEC080C2X*** |
80 |
61/2” |
60” |
69” |
231/4” |
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151 |
120oF |
180oF |
200oF |
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WEC100C2X*** |
100 |
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52” |
61” |
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UL1453 |
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206 |
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71/4” |
27” |
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(48.8C) |
(82.1C) |
(93.3C) |
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WEC115C2X*** |
115 |
601/4” |
701/2” |
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224 |
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Table 2 - SpecificationsandDimensions-SeeTable3forElectricalSpecifications |
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Model # |
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# Elements and Thermostats |
Available Wattage |
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Voltage |
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Full Load Current in Amps |
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(Single Phase) |
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WE****C2X030 |
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3,000 |
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13 |
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WE****C2X045 |
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2 |
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4,500 |
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240 |
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19 |
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WE****C2X055 |
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5,500 |
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23 |
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Table3-ElectricalSpecificationsIncludingCorrespondingWattages/Voltages/Amperages
whl-026 Rev. 4.28.15
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NOTE: In the State of California, the water heater must be |
toavoidwaterheaterfailure. |
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braced, anchored, or strapped to avoid moving during an |
CLASSIFICATION |
MG/L OR PPM |
GRAINS/GAL |
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earthquake.Contactlocalutilitiesforcoderequirementsinyour |
Soft |
0-17.1 |
0-1 |
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area. Visit http://www.dsa.dgs.ca.gov or |
call 1-916-445-8100 |
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SlightlyHard |
17.1-60 |
1-3.5 |
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andrequestinstructions. |
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ModeratelyHard |
60-120 |
3.5-7 |
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However, applicable local codes shall |
govern installation. |
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Hard |
120-180 |
7-10.5 |
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For residential water heaters of a capacity of greater than 52 |
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gallons, consult the local building jurisdiction for acceptable |
VeryHard |
180andover |
10.5andover |
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bracingprocedures. |
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Ifthehardnessofthewaterexceedsthemaximumlevelof12 |
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3. Check area around water heater. Remove any combustible |
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grains per gallon, the water should be softened to a hardness |
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materials,gasoline,andotherflammableliquids. |
levelnolowerthan5grainspergallon.Watersoftenedaslow |
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as0to1grainpergallonmaybeunder-saturatedwithrespect |
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tocalciumcarbonate,resultinginwaterthatisaggressiveand |
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This water heater must not be located near flammable liquids |
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corrosive. |
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suchasgasoline,butane,liquefiedpropane,adhesives,solvents, |
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pH of Water |
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paint thinners, etc., as the controls of this water heater could |
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pH is a measure of relative acidity, neutrality, or alkalinity. |
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ignitethesevaporsandcauseanexplosionresultinginproperty |
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Dissolved minerals and gases affect water pH. The pH scale |
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damage,severepersonalinjury,ordeath. |
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rangesfrom0to14.WaterwithapHof7isconsideredneutral. |
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4.Ifthewaterheateristoreplaceanexistingwaterheater,check |
Water with pH lower than 7 is considered acidic.Water with a |
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forandcorrectanyexistingsystemproblemssuchas: |
pH higher than 7 is considered alkaline.A neutral pH (around |
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• |
Systemleaks |
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7) is desirable for most potable water applications. Corrosion |
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damage and tank failures resulting from water pH levels |
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• Location that could cause the system and water heater |
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of lower than 6 or higher than 8 ARE NOT covered by |
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tofreezeandleak |
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warranty. TheidealpHrangeforwaterusedinawaterheater |
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• |
Incorrectly-sizedexpansiontank |
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is7.2to7.8. |
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5.Thiswaterheatermustbeinstalledverticalonalevelsurface. |
Total Dissolved Solids |
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C. Water Chemistry Requirements |
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Total DissolvedSolids (TDS) is a measurement of all minerals |
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and solids dissolved in a water sample.The concentration of |
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TDSisusuallyexpressedinpartspermillion(ppm). |
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Water with a high TDS concentration will greatly accelerate |
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Chemical imbalance of the water supply may affect efficiency |
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and cause severe damage to the water heater and associated |
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lime and scale formation in the hot water system. Most high |
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equipment. Westinghouse recommends having water quality |
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TDSconcentrationsprecipitateoutofthewaterwhenheated. |
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professionallyanalyzedtodeterminewhetheritisnecessaryto |
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Thiscangenerateascaleaccumulationthatwillgreatlyreduce |
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installawatersoftener.Itisimportantthatthewaterchemistry |
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theservicelifeofthewaterheater. |
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on both the domestic hot water and central heating sides are |
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The manufacturer of the water heater has no control over |
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checked before installing the water heater, as water quality |
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water quality, especially TDS levels in your system. TDS in |
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will affect the reliability of the system. In addition, operating |
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excess of 2000 ppm will accelerate lime and scale formation |
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temperatures above 135oF will further accelerate the build- |
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on the element or the heat exchanger. Water heater failure |
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up of lime scale and may shorten the service life of the water |
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duetoTDSinexcessof2000ppmISNOTcoveredbywarranty. |
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heater. Failure of a water heater due to lime scale build-up, |
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Failure of a water heater due to lime scale build-up IS NOT |
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low pH, or other chemical imbalance IS NOT covered by the |
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covered by warranty. |
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warranty. |
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Hardness: Lessthan12grains |
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Outlined below are water quality parameters that need to be |
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metinorderforthesystemtooperateefficientlyformanyyears. |
Chloride levels: Lessthan100ppm |
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Water Hardness |
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pH levels: 6-8 |
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TDS: Lessthan2000ppm |
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Water hardness is mainly due to the presence of calcium and |
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magnesium salts dissolved in water.The concentration of these |
Sodium: Lessthan20mG/L |
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saltsisexpressedinmg/L,ppm,orgrainspergallonasameasure |
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of relative water hardness. Grains per gallon is the common |
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Failure of electric elements due to lime scale build-up on the |
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reference used in the US water heater industry. Hardness |
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expressed as mg/L or ppm may be divided by 17.1 to convert to |
heating surface, low pH, or other imbalance IS NOT covered |
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grains per gallon. Water may be classified as very soft, slightly |
bythewarranty. |
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hard, moderately hard, or hard based on its hardness number. The minerals in the water precipitate out as the water is heated andcauseacceleratedlimescaleaccumulationonaheattransfer surface.This lime scale build-up may result in premature failure ofthewaterheater.
Water that is classified as hard and very hard must be softened whl-026 Rev. 4.28.15