Bosch GWH 2700 ES LP User Manual

MODEL GWH 2700 ES NG and GWH 2700 ES LP - INDOOR MODELTemperature Modulated with Electronic IgnitionSuitable for heating potable water onlyNot approve

6 720 608 54210Installation instructionsHorizontal venting systems only:An optional stainless concentric vent/air intake termina-tion can be used to p

6 720 608 542Installation instructions11Condensate drain requirementsAn external condensate drain (not supplied with theheater) must be inst

6 720 608 54212Installation instructionsRequired direct vent terminal clearances (twin pipe / concentric penetration)Fig. 11* For clearances not speci

6 720 608 542Installation instructions13Required other than direct vent terminal clearances (single pipe penetration)Fig. 12* For clearances not speci

6 720 608 54214Installation instructions3.3.3 Venting configuration examplesBelow are approved examples of horizontalventing installations.Fig. 1

6 720 608 542Installation instructions15Fig. 17 Vertical venting installation (twin pipe penetra-tion)Fig. 18 Vertical venting installation - Masonry

6 720 608 54216Installation instructions3.3.5 Condensate drain installationNote: Do not install condensate drain in areas where it may freeze.1. Insta

6 720 608 542Installation instructions173.3.6 Fan speed adjustmentIMPORTANT! Installation adjustment:After installing the water heater, the fan speed

6 720 608 54218Installation instructionsAdjusting minimum power fan speed (P2)To select fan speed:B Press ON/OFF button into OFF.B Press and hold &

6 720 608 542Installation instructions19Attention residents of the Commonwealth of Massachusetts:In the Commonwealth of Massachusetts the followingreg

6 720 608 5422IndexIndex1 Warning 32 Appliance details 42.1 Features 42.2 Specifications (Technical data) 52.3 Unpacking the heater 62.4 General

6 720 608 54220Installation instructions3.4 Combustion air requirementsTwin pipe and Concentric pipeThe water heater is designed as a sealed combustio

6 720 608 542Installation instructions213.5 Proper location for installing your heaterCarefully select the location of the water heater. Foryo

6 720 608 54222Installation instructionsFig. 25 Leveling the mounting bracket on the studsFig. 26 Mounting the heater3.8Gas piping & connections B

6 720 608 542Installation instructions23Once connections are made, check for gas leaks at alljoints. Apply some gas leak detection solution to all gas

6 720 608 54224Installation instructionsFOR NATURAL GASMaximum Capacity of pipe in Cubic Feet of Gas per Hour for Gas Pressure of 0.5 Psig or less and

6 720 608 542Installation instructions253.9 Water connections B When facing the heater, the ¾” cold connection is on the bottom right and the hot conn

6 720 608 54226Installation instructionsConnecting the pressure relief valve (PRV)A listed pressure relief valve supplied with the heatermust be in

6 720 608 542Installation instructions273.12 Measuring gas pressureConfirm gas pressure upon installation.Connecting manometerB Shut off gas supply at

6 720 608 54228Electrical connections4 Electrical connections4.1 Electrical power supplyThe water heater requires an electrical power supplyfro

6 720 608 542Operation instructions295 Operation instructionsFig. 381 On/Off button2 Reset button3 Program Key4 LCD display5 Up button6 Down button7 L

6 720 608 542Warning31 WarningFor your safetyDo not store or use gasoline or other flammable,combustible or corrosive vapors and liquids

6 720 608 54230Operation instructions5.2 For your safety read before operating your water heaterA. This appliance is equipped with electronic ignition

6 720 608 542Operation instructions315.5 Use of optional remote control accessory (part no. TSTAT2)Fig. 47 Remote controlThe wireless remote contro

6 720 608 54232Maintenance and service6 Maintenance and serviceThe unit should be checked once a year by a gastechnician. If repairs are nee

6 720 608 542Maintenance and service33space which is likely to experience freezingtemperatures, all water must be drained from the heater.If pre

6 720 608 54234Maintenance and serviceStatic Gas Pressure: “ WCP1 Operating Pressure: “ WCThe P1 minimum operating gas pressure is 3.5" WC for

6 720 608 542Maintenance and service35Final ReadingsP2 CO2 Reading: % CO2P1 CO2 Reading: % CO2Fig. 57 Adjusting P1 CO2 levelFig. 58 Adjusting P2 CO2

6 720 608 54236Maintenance and service6.5 Program valuesThis section describes details on programming theappliance. For most applications th

6 720 608 542Maintenance and service376.6 Control board diagnostics1. Turn on/off switch on water heater to off (O) position.2. Press and hold the

6 720 608 54238Troubleshooting7 Troubleshooting7.1 IntroductionMany of the questions customers ask regardingoperation of this unit can be answer

6 720 608 542Troubleshooting39heater. Then open all of the hot water taps served bythe heater. Wait 10 minutes and check all taps forwater flow. The

6 720 608 5424Appliance detailsFCC:This device complies with Part 15 of the FCC rules.Operation is subject to the following two conditions: (

6 720 608 54240Troubleshooting5. Lack of adequate gas pressure. Inadequate gaspressure will cause the fuel-to-air mixture (CO2) to beout of adju

6 720 608 542Problem solving418 Problem solving8.1 Error code diagnosticsiTo remove error code from the display, press the reset button.Display Cause

6 720 608 54242Problem solving (Flashing) Outlet temperature sensor notsensing expected outputtemperature.1. Check that the sensor is firmly atta

6 720 608 542Problem solving43Over-temperature detected byoutlet temperature sensor on hotwater pipe.Temperature > 185°F1. Check that the sen

6 720 608 54244Problem solvingNo flame ionization detected withwater flow.1. Verify that all manual gas shut off valves are open.2. Check gas type

6 720 608 542Electrical diagram459 Electrical diagramFig. 59 Electrical scheme1 Intlet water temperature sensor2 Outlet water temperature sensor3 Back

6 720 608 54246Sensor resistance charts10 Sensor resistance chartsFig. 60Fig. 61Outlet temperature sensor characteristics3 23 74 24 752576 26 772778 2

6 720 608 542Sensor resistance charts47Fig. 62Back Flow characteristics3 23 74 24 75 25 76 26 77 27 78 28 79 29 710 210 711211712 212 713 213 714 214

6 720 608 54248GWH 2700 ES Functional scheme11 GWH 2700 ES Functional schemeFig. 63 Functional scheme

6 720 608 542Interior components diagram and parts list4912 Interior components diagram and parts list12.1 Interior componentsFig. 64 Components1 Flue

6 720 608 542Appliance details52.2 Specifications (Technical data)Approved in US/CanadaCapacityMaximum flow rate: 7.15 GPM (27 l/min) at a 45

6 720 608 54250Interior components diagram and parts listFig. 65 Appliance overview

6 720 608 542Interior components diagram and parts list5112.2 Components diagram12.2.1 Group 1Fig. 66 Components Diagram998512367910129141617111315154

6 720 608 54252Interior components diagram and parts list12.2.2 Group 2Fig. 67 Components Diagram1324567896720902974.AA JFItem Description Reference1

6 720 608 542Interior components diagram and parts list5312.2.3 Group 3Fig. 68 Components Diagram151413467821291113161756720902975.AA JFItem Descripti

6 720 608 54254Interior components diagram and parts list12.2.4 Group 4Fig. 69 Components Diagram9214134567811111213106720608158-73.1ALItem Descriptio

6 720 608 542Interior components diagram and parts list5512.2.5 Group 5Fig. 70 Components DiagramItem Description Reference1 Water valve with engine 8

6 720 608 54256Interior components diagram and parts list12.2.6 Group 6Fig. 71 Components Diagram151237695111316141012846720902978.AA JFItem Descripti

6 720 608 542Protecting the environment5713 Protecting the environment PackingThe packing box may be fully recycled as confirmed bythe recycling symbo

6 720 608 54258Limited Warranty14 Limited WarrantyGeneralAquastar water heaters are warranted by theManufacturer (BOSCH) through BoschThermot

6 720 608 542Limited Warranty59

6 720 608 5426Appliance details2.3 Unpacking the heaterBefore installing the unit, be certain you have the correct heater for your type of Gas: Propan

6720608542© 2009 Bosch Thermotechnology Corp.,Londonderry, NH all rights reservedReplacement Parts available from:Bosch Termotecnologia SAEstrada de C

6 720 608 542Appliance details72.4 General rules to follow for safe operationB1. You must follow these instructions when you installyour heater. In th

6 720 608 5428Appliance details2.5 Dimensions and Minimum installation clearancesFig. 6 Dimensions1 On/Off button2 Reset button3 Program key4 Power ON

6 720 608 542Installation instructions93 Installation instructions3.1 Tools required for installation• Philips head screwdriver• Flat head screwdriver