Assessments - 4, GPA: 4.3 ( )

Fabricante : American Arquivo Tamanho: 500.65 kb Arquivo Nome : Língua de Ensino:

VacuumBreaker NOTE:outside building structure. These are indicated by being above the dashed line.line should be located inside the buildingstructure. The vacuum breaker line should be located inside the building structure. NOTE:a pipe enclosure or recess box and packed with insulation for additional protection.Cold Water Supply Line Gas Supply Line IMPORTANT! With electrical power supplied to a Tankless water heater, it will not freeze in enviornments as cold as -30.F, when protected from direct wind exposure. In the event of a power failure at temperatures below freezing, the water heater should be drained of all water to prevent freezing damage. The unit may be drained manually or through the installation of the Optional solenoid valves as shown. The electrical connections for the two solenoid valves should be tied to the 120 V power terminals provided on the PC Board of the water heater.When the electrical power to the water heater fails, the cold water supply solenoid valve closes, heater, and the drain down solenoid valve opens, allowing the water heater and associated piping to drain. Ensure that you run the drain for the solenoids per local codes. Route drainper local codes Hot Water Supply S Sub 2Sub 1Pri mary Sub 2Sub 1Pri mary S Pressure Regulator Set to 5 PSI Below Street Pressure OutdoorTanklessWater Heater OutdoorTanklessWater Heater OutdoorTanklessWater Heater OutdoorTanklessWater Heater OutdoorTanklessWater Heater OutdoorTanklessWater Heater TanklessEquipment List QTY Tankless Outdoor 6 Water HeatersElectronic Connection ** Refer to Tankless Accessories and Model Applicability for electronic connection details.Normally Closed Solenoid Valve(Full Size of Cold Water Supply Line) 1/4 “ MinimumNormally OpenSolenoid Valve 18 Expansion Tank Minimum 3/4 “ Cold Water Supply LineMinimum 3/4 “ Hot Water Supply Line Building SupplyGas Supply Line TanklessWater HeaterImportant: Install return line to the hot supply line as close as possibleto the Tankless water heater Gas or Electric Tank WaterHeater For this application:Pump should be controlled by an Aquastat, Timer or Combination Aquastat and Timer. 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. TanklessEquipment List QTY Tankless 1 Water Heater Drawing Number: WH-1-RGE Domestic Hot Water - Circulation Systems1 Tankless Water Heater with Gas or Electric TankPreferred Piping Installation Drawing Date: February 27, 2008 This is not an engineering drawing; it is 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 lo...

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