Bosch Appliances Model GWH 425 manual Interior components and diagram parts list

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Interior components and diagram parts list

8Interior components and diagram parts list

8.1Interior components

Fig. 28 Functional scheme

4	Heat exchanger	22	Flexible hot outlet
5	Burner	26	Gas control slide
10	Temperature adjustment selector	30	Pilot gas tubing
11	Water valve	102	Piezo

20Gas connection

24	6 720 608 034

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Contents GWH-425-PN-N GWH-425-PN-L Index IndexGWH 425 PN specifications Technical data Over heat prevention temperature limiter Water resistantAppliance details Appliance detailsUnpacking the GWH 425 PN heater General rules to follow for safe operationDimensions and installation clearances Dimensions in Inches and mmInstallation instructions Proper location for installing your heaterHeater placement and clearances Installation instructionsMounting Heater Screws Incandescent particle trayCombustion air requirements Appliances located in confined spacesVenting Installation instructions Masonry chimney Existing interior masonry chimneyGas piping & connections GAS ConnectionsFor Natural GAS Connecting manometer Shut off gas Connecting the pressure relief valve PRVMeasuring gas pressure Water connectionsFor your safety read before operating your water heater Operation instructionsRecirculation application Operation instructionsLighting instructions To turn off applianceSetting the water temperature Temperature adjustment knobDraining water from heater Maintenance and service Maintenance intervalsWater valve PilotVent assembly Main burnersMineral scale build-up Operate the circulating pumpTroubleshooting Pilot lights, but goes out when button is releasedIntroduction Pilot does not light Pilot goes out during or after hot water useHot water temperature fluctuates at tap Burners do not light with water flowCheck for a clogged inlet water filter screen see chapter Noise when heater is running Water is too hotWater is not hot enough Burners ignite without hot water flowBurners do not operate cleanly yellow flames when operating Protecting the environment Protecting the environmentSaving water resources Interior components and diagram parts list Interior components and diagram parts listInterior components Components diagram Components DiagramParts list Description ReferenceFifteen Year Limited Warranty Bosch Group Bosch Water Heating Mad River Park Serial NumberGas Pressure Reading Static Waitsfield, VT all rights reserved