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Bosch Appliances GWH-345/450-ESR-N manual Exhaust vent connection, Installation instructions

Models: GWH-345/450-ESR-L GWH-345/450-ESR-N

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Installation instructions

Fig. 14 Exhaust vent connection

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Bosch Appliances GWH-345/450-ESR-N, GWH-345/450-ESR-L manual Exhaust vent connection, Installation instructions

Contents

GWH 345/450 ESR Temperature Modulated with Electronic IgnitionSuitable for heating and recirculating potable water What to do if you smell gasIndex For your safetyIndex 1 WarningWarning The recirculating water heater must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures equal to or more than 0.5 psig 14” W.C Dimensions 2.1 Features2.2 GWH-345/450-ESR Specifications Technical data Temperature ControlInlet air restrictors Fig. 3 Service position to access water and electric connections2.3 Unpacking the GWH-345/450-ESR heater Water resistantAppliance details 2.4 General rules to follow for safe operationTable 1 Minimum clearances 2.5 Dimensions and minimum installation clearancesFig. 4 Dimensions Fig. 5 Minimum clearancesPump Sizing Fig. 7 Service position to access water and electric connections2.6 Applications Introductionwater flow rate Table 2 Venting Specificationspressure Inlet3.4 Mounting installation 3 Installation instructions3.2 Proper location for installing your heater 3.3 Heater placement and clearancesSingle pipe 3.5 Combustion air requirementsFig. 10 Mounting the heater Twin pipeAppliances located in confined spaces Installation instructions1000 Btu/hr 292.81 watts if all air is taken from inside the building Vent lengths 3.6.1 Vent material and specificationsTable 3 Venting Specifications 3.6 VentingTable 4 Vent manufacturer contact information Vent Safety SystemFig. 13 Maximum vent and combustion air lengths Vent materialInstallation instructions Fig. 14 Exhaust vent connectionTable 6 Determining equivalent vent length see example in Table Selecting inlet air restrictorExhaust IntakeFig. 15 Mounting sequence Fig. 16 Exhaust air inlet accessoryTable 8 Restrictors table Combustion air inlet connectionFig. 18 Horizontal twin pipe termination Fig. 17 Required condensate drain installation3.6.4 Room sealed installation Twin pipe 3.6.3 Condensate drain requirementsFig. 20 Vertical vent termination clearances 3.6.5 Vertical terminationsHorizontal runs Vent terminations248 CMR 5.082a1 through 3.6.6.1Requirements for installation in MassachusettsAttention residents of the Commonwealth of Massachusetts Installation instructionsMinimum distance Recommended exhaust vent terminator positionInstallation instructions DescriptionFig. 24 Vertical venting installation 3.6.7 Exhaust vent configuration examplesFig. 22 Horizontal side wall venting installation Fig. 23 Vertical venting installation - Masonry Chimney3.7 Gas piping & connections GAS CONNECTIONSInstallation instructions Maximum Capacity of Semi-Rigid flexible, non FOR NATURAL GASFOR LP GAS Installation instructionsFig. 27 Gas pressure measuring lower tapping Connecting manometer3.8 Measuring gas pressure 3.9 Checking restrictor plate size by measuring CO2 level valueInstallation instructions 3.10 Water connections3.11 Electrical connections Fig. 30 Plumbing Connections and Pressure Relief Valve4.3 Startup instructions 4.2 For your safety read before operating your water heater4 Operating instructions 4.1 Initial filling instructionsFig. 33 Recirculating water temperature adjustment 4.4 Power4.5 Recirculating water temperature 4.6 Temperature and hot water flow4.8 Electrical diagram Fig. 35 Electrical schemeOperating instructions Yearly maintenance 5 Maintenance and service5.1 Service mode Maintenance and serviceValues Exiting service modeMode ParameterPossible Cause TroubleshootingTroubleshooting Fault IndicationCheck TroubleshootingFault Indication Possible Cause7 GWH-345/450-ESR Functional scheme GWH-345/450-ESR Functional schemeFunctional scheme Fig. 37 Components 8 Interior components diagram and parts listInterior components diagram and parts list 8.1 Interior components8.2 Components diagram Fig. 38 Components DiagramInterior components diagram and parts list Reference 8.3 Parts listInterior components diagram and parts list DescriptionComponents 9 Protecting the environmentProtecting the environment PackingHow to Make a Claim 10 Ten Year Limited WarrantyTen Year Limited Warranty Service Labor CostsBOSCH THERMOTECHNOLOGY CORPORATION Installer Checklist, to be performed by installer upon installation