Bosch Appliances Model GWH 425 manual Protecting the environment, Saving water resources

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Protecting the environment

7Protecting the environment

Packing

The packing box may be fully recycled as confirmed by

the recycling symbol .

Components

Many parts in the heater can be fully recycled in the end of the product life. Contact your city authorities for information about the disposal of recyclable products.

Saving water resources:

BMake sure you close all the taps after any use. Avoid leaving the taps dripping. Repair any leaking tap.

BSet the water heat to the temperature you want. This way you have the precise water flow needed (mixing cold water to regulate temperature will increase the water flow with consequent waste of water).

For increased safety shut off the appliance from the main water supply if your are staying away from home for a considerable time.

At below freezing temperatures, disconnect the plumbing connections to the heater and allow the heater to drain.

To prevent any freeze damage, introduce short bursts of compressed air (20-40 psi) through these connections to remove the residual water in the horizontal pipes and water valve.

Follow instructions in chapter 4.5 to remove any additional water remaining in the watervalve and heat exchanger.

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Contents GWH-425-PN-N GWH-425-PN-L Index IndexAppliance details GWH 425 PN specifications Technical dataOver heat prevention temperature limiter Water resistant Appliance detailsGeneral rules to follow for safe operation Unpacking the GWH 425 PN heaterDimensions in Inches and mm Dimensions and installation clearancesInstallation instructions Installation instructionsProper location for installing your heater Heater placement and clearancesScrews Incandescent particle tray Mounting HeaterAppliances located in confined spaces Combustion air requirementsVenting Existing interior masonry chimney Installation instructions Masonry chimneyGAS Connections Gas piping & connectionsFor Natural GAS Water connections Connecting manometer Shut off gasConnecting the pressure relief valve PRV Measuring gas pressureOperation instructions For your safety read before operating your water heaterOperation instructions Recirculation applicationTo turn off appliance Lighting instructionsDraining water from heater Setting the water temperatureTemperature adjustment knob Pilot Maintenance and serviceMaintenance intervals Water valveOperate the circulating pump Vent assemblyMain burners Mineral scale build-upPilot goes out during or after hot water use TroubleshootingPilot lights, but goes out when button is released Introduction Pilot does not lightCheck for a clogged inlet water filter screen see chapter Hot water temperature fluctuates at tapBurners do not light with water flow Burners ignite without hot water flow Noise when heater is runningWater is too hot Water is not hot enoughBurners do not operate cleanly yellow flames when operating Saving water resources Protecting the environmentProtecting the environment Interior components Interior components and diagram parts listInterior components and diagram parts list Components Diagram Components diagramDescription Reference Parts listFifteen Year Limited Warranty Waitsfield, VT all rights reserved Bosch Group Bosch Water Heating Mad River ParkSerial Number Gas Pressure Reading Static