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Фрагмент инструкции
Pump to be sized to maintain circulationloop temperature.The pump should be sized to overcome thepressure loss through the tank water heater, and supply and return plumbing in thecirculation loop. Reference the sectionPump Sizing for Circulation.Pump to be of bronze or stainless construction. Aquastat Connection TanklessEquipment List QTY Tankless 3 Water HeatersElectronic Connection ** Refer to Tankless Accessories and Model Applicability forelectronic connection details. Drawing Number: WH-3-RGEDomestic Hot Water - Circulation Systems3 Tankless Water Heaters with Gas or TankPreferred Piping Installation Drawing Date: February 27, 2008 This is not an engineering drawing; it notas a replacement for professional engineering This drawing is not intended to describe It is up to thecontractor or engineer to determine andconfiguration of the particular The drawing doesnot imply compliance with It is theresponsibility of the engineer isin accordance with Confer with local buildingofficials before installation. Key Pressure Relief Valve 3/ 4" Ball Valve3/ 4" UnionCheck Valve S Pressure RegulatorCirculating PumpSolenoid Valve Boiler Drain Valve 23 24 Tankless Tankless Tankless Tankless Drawing Number: Drawing Date: Pressure Relief Valve 3/4" Ball Valve 3/4" Union Check Valve Key S Pressure Regulator Circulating Pump Solenoid Valve Boiler Drain Valve WH-6-RGE Domestic Hot Water - Circulation Systems 6 Tankless Water Heaters with Gas or Electric Tank Preferred Piping Installation February 27, 2008 This is not an engineering drawing; it is intended only as a guide and not as a replacement for professional engineering project drawings. This drawing is not intended to describe a complete system. It is up to the contractor or engineer to determine the necessary components and configuration of the particular system to be installed. The drawing does not imply compliance with local building code requirements. It is the responsibility of the engineer or contractor to ensure that the installation is in accordance with all local building codes. Confer with local building officials before installation. Cold Water Supply Line Gas Supply Tankless Water Heater Primary Water Heater Sub 1 Water Heater Sub 2 Water Heater Primary Water Heater Sub 1 Water Heater Sub 2 Hot Water Supply Line Smaller Return Line Can Be Used After The Last Fixture Expansion Tank (Optional) Header Sized One Pipe Size Larger Than Hot Water Supply Line - (To eliminate cold water sandwich effect caused by frequent On/Off operation) Gas or Electric Tank Water Heater Tank Water Heater sized to maintain circulation loop temperature Pressure Regulator Set to 5 PSI Below Street Pressure Building Outlets For this application: Pump should be controlled by an Aquastat, Timer or Combination Aquastat and Timer. Pump to be sized to maintain circulation loop temperature. The pump should be sized to overcome the pressure loss through the tank water heater, and supply and return plumbing in the circulation loop. ...
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