AquaStar GWH 1600 P Spécifications

6720607072-00.1 JSGWH-635-ES-N - Natural GasGWH-635-ES-L - Liquefied Petroleum (LP) GasWarning: If the information in this manual is notfollowed exact

Installation instructionsFuel Gas Code. Consult a HVAC specialist if your airinfiltration rate is questionable.The space must have two permanent openi

Installation instructions3.6Ventingpermitted in the total vent length), or subtract 11/4feet for every 45 ° elbow used. Horizontal sections ofvent mus

Installation instructionsand may result in a hazardous condition. For specificquestions concerning vent material, specifications,usage or installation

installation instructions3,6.3 Condensate drain tube requirementsExhaust collar condensate drain installation(supplied with heater)• The condensate dr

Installation instructionsa 3" or 4" pipe from the outside. See Chapter 3.5 formore direction on combustion air.• To reduce pressure differen

Installation instructionsOver 20/12 to 21/12 8.0 2.44Table 5 Termh_ation heights at various roof pitchesInterior masonry chimneysThe single wall stain

Installation instructionsEQUIPMENT VENTING SYSTEM REQUIRED.When the manufacturer of Product Approved sidewall horizontally mounted gas equipment provi

Installation instructionsRecommended exhaust vent terminator clearancesFig. 17Description Minimum distanceDirectly below an opening; operable windows,

Installation instructions3,6.7 Exhaust vent configuration examplesSupporting the exhaust vent systemMI_IMUM ABOV GR©U DRAIN CAP _.FLASHINGSTORM COLLAR

Installation instructions3.7 Gas piping & connections ]_!Before connecting the gas supply, check the ratingplate on the right side of the heater t

IndexIndexWarning2 Appliance details2.1 Features2.2 GWH-635=ES Specifications (Technical data)2.3 Unpacking the GWH-635-ES heater2.4 General rules to

Installation instructionsFOR NATURAL GASMaximum Capacity of pipe in Cubic Feet of Gas per Hour for Gas Pressure of 0.5 Psig or less and a Pressure dro

Installation instructions3.8 Measuring gas pressureConfirm proper gas pressure upon installation.Connecting Manometer• Shut off gas supply at installe

Installation instructions3.9 Water connections• When facing the heater, the 3/4"cold inlet connectionis on the bottom right and the hot connectio

Installation instructions3.10 Electrical connectionsThe GWH-635-ES requires an electrical power supplyfrom a 120VAC / 60Hz circuit (with a dedicated o

Operation instructions4Operation instructions°©\42)Fig. 281 On/Off switch2 Resetbutton3 Program" _ " button4 Increasingtemperatureselector5

Operation instructionsOff• To shut down the appliance move the on/off switch tothe "off" position (0),4.3 Temperature selectionTo select out

Operation instructionsSetting the water temperatureThe desired temperature of the hot water can be adjusted on the front control panel of the heater.T

Operation instructions4.4 Use of optional remote controlaccessory• press reset button in order to return heater to normaloperation.Fig. 32 Remote cont

Maintenance and service5 Maintenance and serviceThe unit should be checked once a year by a gastechnician. If repairs are needed, the repairs should b

Maintenance and service5.3 Mineral scale build-upPeriodic descaling may be necessary in areas with highmineral content in the water. Scale buildup in

WarningOperation is subject to the following two conditions: (1)This device may not cause harmful interference, and (2)this device must accept any int

Maintenance and serviceFig. 40 Measuring port• While holding the Program (P) button, turn the ON/OFF switch to ON (I) position (see Fig. 41). As soona

Maintenance and serviceFig. 43 Adjusting P2 CO 2 level3. Verify both P1 and P2 CO 2 readings are within theranges specified in table 10. Repeat steps

Maintenance and service5.5 Control board diagnostics1. Turn on/off switch on water heater to off (O) position.2. Press and hold the program ( <Zb )

Troubleshooting6 Troubleshooting6.1 IntroductionMany of the questions customers ask regardingoperation of this unit can be answered by following thetr

Troubleshooting7. Cold water is mixing into the hot water lines(plumbing crossover). A plumbing crossover canunintentionally mix cold water with the h

Troubleshooting2. Improper venting. Venting that is unsealed, the wrongmaterial, too big in diameter or too long in run willresult in unstable burner

Troubleshooting6.8 Error code diagnosticsPart numbers subject to change.A2A7Fault in the flue gas limiter (part#8700400032).Note: Old style overheat c

Troubleshooting(31C6C7CAFan rotation too low on star[up.(part# 8707204039)Fan rotation too low in operation(part# 8707204039)No rotational speed senso

TroubleshootingE1E2E9Over-temperature detected by temperaturesensor on hot water pipe.(part# 8700400015)Cold water temperature sensor fault.(part# 870

TroubleshootingEAECEONo flame ionization detected with waterflow.(part# 8708107020)Ionization failure during operation.(part# 8708107020)Internal hard

Appliance details2 Appliance details2.1 FeaturesParts• Touch pad interface control• High power pre-mix compact burner with low NOxemissions• Modulatin

TroubleshootingF7FA8EIonization error at standby.(part# 8708107020)Gas leakage error, gas valve circuit notclosing properly.(part# 8707021019)Electron

7 Electrical diagramFig, 44 Electrica/ scheme1 Intlet water temperature sensor2 Ionization sensor3 Water flow sensor4 Flue gas limiter5 Temperature li

GWH-635-ES Functional scheme8 GWH-635-ES Functional schemeIDLEYESYES NOYESNO NO _ NONO YES YESYESHot waterdelivered atselected temp.ESYES#Fig. 45 Func

Interior components diagram and parts list9 Interior components diagram and parts list9.1 Interior componentsFig. 46 Components1 Cover2 On/Off switch3

Interior components diagram and parts list9.2 Components diagram334524Fig. 48 Components Diagram44t918222628296720607072-34.8 JF44 6 720 608 108

Interior components diagram and parts list9.3 Parts list123456789lO11121314151617181920212223242526272829303132333435363738394042434445464748Table 13F

Protecting the environment10 Protecting the environmentPackingThe packing box may be fully recycled as confirmed bythe recycling symbol z'_Compon

Fifteen Year Limited Warranty11 Fifteen Year Limited WarrantyGeneralBOSCH PRO tankless water heaters are warranted bythe Manufacturer (BOSCH) through

Installer Checklist, to be performed by installer upon installationSerial NumberGas Pressure Reading _Building Water PressureInstalling CompanyInstall

Appliance details• CO 2 level set from factory, see chapter 5.4.Dimensions• Depth (in): 8 V2" (220 ram)• Width (in): 15 3/4" (400 ram)• Heig

Appliance details2.4 General rules to follow for safeoperation• 1. You must follow these instructions when youinstall your heater. In the United State

Appliance details2.5 Dimensions and Minimum installation clearancesFig. 4 Dimensions1 Cover2 On/Off switch3 Reset button4 LCD display5 Program button6

Installation instructions3 Installation instructions3.1 IntroductionPlease follow these instructions. Failure to followinstructions may result in:• Da

Installation instructionspitch down towards termination 1/4inch for every foot ofhorizontal length.Single pipe method:Although it is permissible to dr