Bosch Appliances GWH 425 PN/HN4GWH 4254, GWH 260 PN/HN2 manual HotCold

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Applications manual

23

 

 

3.2.2Powerstream Pro whole house application with domestic recirculation loop

The circulator should be controlled by an external aquastat, or with a timer to run only during times of expected hot water usage.

Powerstream Pro

RP17PT or RP27PT

Ariston Pro GL4Ti (for pipe runs over 100ft use GL8Ti)

HotCold

Symbols

Bronze circulator pump sized

Flow check valve

according to UPC standards

 

(Taco Bronze 007 or Grundfos 15-42B

 

will cover most homes up to 3 bathrooms)

 

Potable water

Service

expansion tank

valves

 

Timer or

 

Flow direction

Aquastat

 

 

 

Sink

Standard tub fixture

Note: Cold water piping to fixtures not shown for clarity purposes.

Note: This drawing is conceptual in nature and does to address all design, installation or safety considerations.

Additional safety and/or auxiliary equipment may be needed. This diagram is for reference use by officials, designers and licensed installers.

It is expected that installers have adequate knowledge of accepted industry practices for the equipment, procedures, and applications involved. Drawing is not to scale.

Drawing # WH1R

CN rev 06/07

Bosch Water Heating

Applications manual 11.2007

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Contents Applications manual Table of Contents Introduction Rule of thumb sizing Sizing by ChartSizing tankless water heaters DefinitionsGas Appliance Sizing Chart Installation guidelines FeaturesGWH 715 ES Installation Specifications Applications manual GWH 715 ES Installation ClearancesGWH 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 Technical Specifications GWH 450 ESR Installation SpecificationsGWH 425 EF Technical Specifications GWH 425 EF Installation SpecificationsGWH 425 EF Installation Clearances Establish a one-foot rise before any elbows GWH 425 HN Installation SpecificationsGWH 425 HN Installation Clearances GWH 425 HN Technical SpecificationsGWH 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 Sink Temperature and pressureService valve Relief valveService valve Sink Flow direction Sink Service valves Low flow Flow direction Shower Temperature and pressure relief valveStandard tub fixture Service Sink valvesPowerstream Pro RP17PT or RP27PT Powerstream Pro whole house applicationsHotCold Bosch ProTankless gas water heater SymbolsHot Cold Parallel unit applications Bosch GWH 715 ES Bosch GWH C 800 ES Pressure relief valvesGWH 715 ES and GWH C 800 ES cascading Cascading unit applicationsPressure Bosch GWH 345 ESR Bosch GWH 450 ESR Single unit tank loading application plumbing diagramCold water Feed DHW ESR control Board Single Unit Tank Loading Electrical DiagramExternal storage tank Radiant space heating and DHW plumbing diagramCold water FeedRadiant 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 Back Flow preventer Baseboard Radiant PanelDrawing # 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