Bosch Appliances 250SX LP, 250SX NG manual To Turn OFF GAS to Appliance

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Appliance details

NOTE: on a first time initial instal-

ilation or after gas line work has been done, existence of air in the gas line will cause ignition delay when the hot water is turned on. This will result in an error (EA) on the units display screen. This is normal. When this occurs, leave the hot water running and wait 3-5 seconds, then reset the unit (Fig. 26, pos. 2). Wait for (EA) to disap- pear. The heater will begin to at- tempt ignition again, if the (EA) reappears then repeat this same process until all air has been bled from the gas line.

When the heater is in operation you will hear its power vent fan and burner operating. Upon turning off the hot water flow the power vent fan will continue to operate for up to 60 seconds to exhaust all flue gases. The power vents fan speed is variable depending on the rate of hot water used and the burner output.

TO TURN OFF GAS TO APPLIANCE

BTurn off the manual gas shut off on the supply line to the heater and set the ON/OFF switch to the OFF (0) position. Note: a manual gas shut off valve is not supplied with the heater.

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Contents SX NG SX LP What to do if you smell gasFor your safety IndexIndex FeaturingFCC Appliance details Features250 SX Specifications Technical data Dimensions Safety devicesCombustion Gas typesDimensions and Minimum installation clearances DimensionsVenting Proper location for installing your heaterGeneral rules to follow for safe operation Combustion air requirements Mounting installationClearances Venting Room Minimum exhaust vent size and length Venting optionsAppliance details Room sealed installation Twin Pipe System Open combustion installation Single Pipe SystemDescription Minimum distance 720 607 Shown GAS Line SizingFor Natural GAS For LP GASGas line sizing Be Included in the Pipe SizingWater connections Plumbing Connections and Pressure Relief ValveFor your safety read before operating your water heater Electrical connectionsOperating instructions What to do if YOU Smell GASTo Turn OFF GAS to Appliance Power Temperature selectionOperation instructions Operation instructionsOperation instructions Setting the water temperature Flow/temperature chartsUse of remote control accessory Reset buttonOperation Program buttonMaintenance and service TroubleshootingUnbalanced pressure in water lines TroubleshootingTemperature balance valves Troubleshooting Display Cause Solution ChapterElectrical diagram Electrical diagramSX Functional scheme SX Functional schemeInterior components Interior components diagram and parts listInterior components diagram and parts list Components diagram Components DiagramParts list Description ReferenceSpecial adjustment for measuring and adjusting CO2 levels Adjusting the unitAdjusting Leave Program modeProtecting the environment Protecting the environmentPacking ComponentsTwelve Year Limited Warranty Controlled Energy Corp