Bosch Appliances GWH 260 PN/HN2, GWH 425 PN/HN4GWH 4254 manual BBT North America Corporation

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BBT North America Corporation

Bosch Group

Bosch Water Heating 50 Wentworth Ave Londonderry, NH 03053 Telephone (603) 882-1100 Fax (603) 584-1681 www.protankless.com techsupport@protankless.com

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Contents Applications manual Table of Contents Introduction Deﬁnitions Sizing by ChartSizing tankless water heaters Rule of thumb sizingGas Appliance Sizing Chart Applications manual GWH 715 ES Installation Clearances FeaturesGWH 715 ES Installation Speciﬁcations Installation guidelinesGWH C 800 ES Technical Speciﬁcations GWH C 800 ES Installation SpeciﬁcationsGWH C 800 ES Installation Clearances Description Min Distances Outdoor Installation for GWH 715 ESGWH C 800 ES GWH 345 ESR Technical Speciﬁcations GWH 345 ESR Installation SpeciﬁcationsGWH 450 ESR Installation Clearances GWH 450 ESR Installation Speciﬁcations GWH 450 ESR Technical SpeciﬁcationsGWH 425 EF Technical Speciﬁcations GWH 425 EF Installation SpeciﬁcationsGWH 425 EF Installation Clearances GWH 425 HN Technical Speciﬁcations GWH 425 HN Installation SpeciﬁcationsGWH 425 HN Installation Clearances Establish a one-foot rise before any elbowsGWH 425 PN Technical Speciﬁcations GWH 425 PN Installation SpeciﬁcationsGWH 425 PN Installation Clearances GWH 260 PN Technical Speciﬁcations GWH 260 PN Installation ClearancesGWH 260 PN Installation Speciﬁcations Electrical requirements Maximum ﬂow rate at given temperature riseTechnical Speciﬁcations Powerstream Pro RP1P, RP2P, RP3P, RP7P, RP9P,RP12PT Ariston Pro GL2.5Ti, GL4Ti, GL8Ti Introduction Point-of-use applicationsPotable water Relief valve Temperature and pressureService valve SinkService valve Sink Flow direction Temperature and pressure relief valve Sink Service valves Low flow Flow direction ShowerPowerstream Pro whole house applications Service Sink valvesPowerstream Pro RP17PT or RP27PT Standard tub fixtureHotCold Symbols Bosch ProTankless gas water heaterHot Cold Parallel unit applications Pressure relief valves Bosch GWH 715 ES Bosch GWH C 800 ESCascading unit applications GWH 715 ES and GWH C 800 ES cascadingPressure Bosch GWH 345 ESR Bosch GWH 450 ESR Single unit tank loading application plumbing diagramCold water Feed DHW Single Unit Tank Loading Electrical Diagram ESR control BoardFeed Radiant space heating and DHW plumbing diagramCold water External storage tankRadiant Space Heating and DHW Electrical Diagram Radiant space heating and DHW electrical diagramBosch GWH 345 ESR, Bosch GWH 450 ESR Fan coil space heating and DHW plumbing diagramFan Coil Cold water Fan Coil Space Heating and DHW Electrical Diagram Fan Coil space heating and DHW electrical diagramDrawing # BB OL RevA 10/07 Baseboard Space Heating and DHW Electrical Diagram Drawing # Bbaol RevA 10/07 Pkps Insulate piping Cold water feed Terminal box Baseboard Radiant Panel Back Flow preventerDrawing # EID Bbol CN revA 10/07 Descaling procedure Circulating pump Flow direction Filter Service valves Applications manual Applications manual Applications manual Applications manual BBT North America Corporation