Bosch Appliances GWH 2700 ES NG, GWH 2700 ES LP, ESVVT manual 1211

Page 53

Interior components diagram and parts list

12.2.3 Group 3

16

15

14

17

9

1211

5

4

3

13

8

7

1

2

6

6720902975.AA JF

Fig. 68

Components Diagram

 

 

 

 

Item

Description

Reference

1

Main burner

8 708 120 699

 

 

 

2

Burner gasket

8 704 701 087

 

 

 

3

Primary fan

8 707 204 071

 

 

 

4

Backflow temperature sensor

8 707 206 459

 

 

 

5

Washer

8 704 701 097

 

 

 

6

Fan mount nut

2 915 011 006

 

 

 

7

Secondary fan - NG

8 707 204 094

 

 

 

7

Secondary fan - LPG

8 707 204 072

 

 

 

8

Screw

8 703 403 012

 

 

 

9

Gas / Air Mixer

8 705 700 170

 

 

 

Table 23

Item

Description

Reference

10

Air duct O-ring

8 700 205 149

 

 

 

11

Venturi

8 700 306 226

 

 

 

12

O-ring

8 700 205 224

 

 

 

13

Mixer / Fan gasket

8 704 701 059

 

 

 

14

Screw

2 910 642 150

 

 

 

15

Plate gasket

8 701 004 049

 

 

 

16

Air supply duct

8 705 700 155

 

 

 

17

Screw

2 910 952 122

 

 

 

Table 23

6 720 608 542

53

Image 53
Contents What to do if you smell gas Intended for variable flow applicationsIndex For your safety Appliance details FeaturesSpecifications Technical data GWH 2700 ES is not approved or designed for To remove combustion cover service onlyUnpacking the heater Venting General rules to follow for safe operationDimensions Dimensions and Minimum installation clearancesTools required for installation Installation instructionsIntroduction VentingFittings or Piping Equivalent Feet Installation instructions Horizontal venting systems onlyVenting Specifications 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 ExampleLevel Vent length1 Speed P2 Adjusting minimum power fan speed P2Adjusting maximum power fan speed P1 Installation instructions Twin pipe and Concentric pipe Combustion air requirementsMounting installation Proper location for installing your heaterHeater placement and clearances 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 TestPosition of the fuses in control unit Electrical power supplyElectrical connections LCD Display functions Operation instructionsTemperature selection For your safety read before operating your water heaterPower Reset button Use of optional remote control Accessory part no. TSTAT2Operation Program buttonAnnual maintenance table Every year Maintenance and serviceAnnual maintenance Winterizing for seasonal useMineral scale build-up Adjusting CO2 carbon dioxideDescaling using a pump Adjusting CO2 Measuring CO2 combustion cover must be installedReturning to Service Once Gas Pressure is adequate% 3.0 % 60 ppm Final ReadingsComment Program Description Factory DefaultProgram values Diagnostic menu Control board diagnosticsTroubleshooting TroubleshootingWater is too hot Water is not hot enoughNoisy burner/heater during operation Hot water temperature fluctuates at tapLow water flow/pressure 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 Interior components diagram and parts listInterior components diagram and parts list Appliance overview Description Reference Components diagramGroup 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