Bosch Appliances ESVVT, GWH 2700 ES LP, GWH 2700 ES NG Interior components diagram and parts list

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Interior components diagram and parts list

12 Interior components diagram and parts list

12.1 Interior components

Fig. 64 Components

1	Flue gas collector	12	Ignition electrodes
2	Heat exchanger	13	Observation window
3	Flame sensor	14	Backflow temperature sensor
4	Primary fan (Mixer)	15	Secondary air fan
5	Outlet temperature sensor	16	Gas valve
6	LCD display	17	Water valve with engine and temperature sensor
7	On/Off button	18	Control unit
8	Reset button	19	Up button
9	Program key	20	Down button
10	Flue gas limiter	21	LED

11Heat exchanger overheat sensor (ECO)

6 720 608 542

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Contents What to do if you smell gas Intended for variable flow applicationsIndex For your safety Appliance details FeaturesSpecifications Technical data Unpacking the heater To remove combustion cover service onlyGWH 2700 ES is not approved or designed for Venting General rules to follow for safe operationDimensions Dimensions and Minimum installation clearancesTools required for installation Installation instructionsIntroduction VentingVenting Specifications Installation instructions Horizontal venting systems onlyFittings or Piping Equivalent Feet Twin pipe termination clearances Installation instructions Condensate drain requirementsMinimum combustion air and exhaust pipe length Maximum combustion air and exhaust pipe lengthCanadian installations1 Installations2 Canadian installations1 Horizontal twin pipe penetration Vent connections Vertical venting installation twin pipe penetra- tionVenting Flex ProTech Heat Fab Installation instructions Condensate drain installationExhaust Total equivalent vent length calculationIntake ExampleAdjusting maximum power fan speed P1 Adjusting minimum power fan speed P2Level Vent length1 Speed P2 Installation instructions Twin pipe and Concentric pipe Combustion air requirementsHeater placement and clearances Proper location for installing your heaterMounting installation Gas piping & connections GAS Line Sizing For Natural GAS Water quality Water connectionsGWH Domestic hot water recirculationMeasuring gas pressure Connecting manometerStatic Pressure Test Operating Pressure TestElectrical connections Electrical power supplyPosition of the fuses in control unit LCD Display functions Operation instructionsPower For your safety read before operating your water heaterTemperature selection Reset button Use of optional remote control Accessory part no. TSTAT2Operation Program buttonAnnual maintenance table Every year Maintenance and serviceAnnual maintenance Winterizing for seasonal useDescaling using a pump Adjusting CO2 carbon dioxideMineral scale build-up Adjusting CO2 Measuring CO2 combustion cover must be installedReturning to Service Once Gas Pressure is adequate% 3.0 % 60 ppm Final ReadingsProgram values Program Description Factory DefaultComment Diagnostic menu Control board diagnosticsTroubleshooting TroubleshootingWater is too hot Water is not hot enoughLow water flow/pressure Hot water temperature fluctuates at tapNoisy burner/heater during operation Lack of adequate gas pressure. Inadequate gas Error code diagnostics Problem solvingVenting may cause this failure Problem solving Display Cause SolutionOver-temperature detected by No flame ionization detected with Electrical diagram Electrical diagramSensor resistance charts Back Flow characteristics Functional scheme GWH 2700 ES Functional schemeInterior components diagram and parts list Interior components diagram and parts listInterior components Appliance overview Group Components diagramDescription Reference Interior components diagram and parts list Group 1211 6720608158-73.1AL Interior components diagram and parts list Group 708 300 Protecting the environment Protecting the environmentPacking ComponentsLimited Warranty Limited Warranty 6720608542