Bosch Appliances GWH 2700 ES LP Proper location for installing your heater, Mounting installation

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Installation instructions

3.5Proper location for installing your heater

Carefully select the location of the water heater. For your safety and for proper heater operation, you must provide combustion air to the heater and a proper exhaust vent system.

Follow the guidelines below:

B 1. Locate the heater where venting, gas and plumbing connections are feasible and convenient.

B 2. The hot water lines should be kept short and insulated to save energy. Centrally locating the water heater is recommended to keep hot water distribution times even throughout the structure.

Warning: The water in this water heater is cold and always remains cold except for the times the burner is on. In the event of power outage in conjunction with freezing temperatures, it is recommended that the heater be drained.

See chapter 6.2, page 32 “Winterizing” for draining instructions.

Warning: Flammable materials, gasoline, pressurized containers, or any other items or articles that are potential fire hazards must NOT be placed on or adjacent to the heater. The appliance area must be kept free of all combustible materials, gasoline and other flammable vapors and liquids.

3.6Heater placement and clearances

The water heater is approved for installation on a combustible wall (see chapter 3.7 Mounting installation) provided the floor covering below the heater is noncombustible. For installations in an alcove or closet, maintain the minimum clearances to combustible and non-combustible materials. See Fig. 7 and Table 1 on page 8.

Clearances from any exhaust vent pipe are dependent upon the clearance requirements of the stainless steel vent pipe manufacturer. Single wall stainless steel (AL29-4C) vent pipe (vent type rated for Category III appliances) must be used when exhaust venting this appliance. See chapter 3.3 (page 9) Venting.

3.7Mounting installation

Warning: before starting installation

B Check that there are no loose or

damaged parts inside the appliance

BConfirm the gas type of the heater matches the gas supply you will be connecting the heater, see Fig. 2, page 6.

Front cover should be removed (see i instructions on page 6) in order to inspect

components visually.

Warning: Do not install this appliance on a carpeted wall. The heater must be mounted on a wall using appropriate anchoring materials.

Warning: In areas where outside temperature is routinely below 32°F and the heater is to be installed on the inside of an exterior wall, a minimum 2" air gap or rigid insulation between the heater back and the wall is recommended.

If wall is sheathed with plaster or drywall, it is recom- mended that two support boards, either 1”x4” or 1/2" (minimum) plywood first be attached across a pair of studs, see Fig. 24.

BSecure the wall mounting bracket provided with the heater to the wall surface. The heater must be kept level on the wall surface (see Fig. 25).

BHang the appliance on the bracket, see Fig. 26.

Studs 16"

(406mm) on

center

Fig. 24 Distance between support boards

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 To remove combustion cover service only Unpacking the heaterGWH 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 VentingInstallation instructions Horizontal venting systems only Venting SpecificationsFittings 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 minimum power fan speed P2 Adjusting maximum power fan speed P1Level Vent length1 Speed P2 Installation instructions Twin pipe and Concentric pipe Combustion air requirementsProper location for installing your heater Heater placement and clearancesMounting 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 power supply Electrical connectionsPosition of the fuses in control unit LCD Display functions Operation instructionsFor your safety read before operating your water heater PowerTemperature 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 useAdjusting CO2 carbon dioxide Descaling using a pumpMineral 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 Description Factory Default Program valuesComment Diagnostic menu Control board diagnosticsTroubleshooting TroubleshootingWater is too hot Water is not hot enoughHot water temperature fluctuates at tap Low water flow/pressureNoisy 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 Components diagram GroupDescription 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