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Bosch AquaStar 2400ES Tankless Hot Water Heater
Technical Information and Specifications
Return to Bosch Water Heater Main Page
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Bosch AquaStar 2400ES - Applications and Sizing
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BTU Input
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NG: 19,900 to 175,000
LP: 19,900 to 175,000
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Energy Factor
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.82
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Thermal Efficiency
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82%
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Ignition
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Electronic (120V plugs in)
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Minimum Flow Rate to Activate
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0.65 GPM
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Flow Rates (gpm)
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6.4 @ 45°F rise
5.3 @ 55°F rise
4.6 @ 65°F rise
3.8 @ 77°F rise
3.2 @ 90°F rise
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Weight
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67 lbs.
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Dimensions
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30 1/2" H by 17.875" W by 11 1/4" D
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Modulationg Gas Valve
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Yes
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Optional Accessories
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Outdoor Kit (AQOK)
Remote Thermostat (TSTAT2)
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Life Expectancy
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20+ years
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AquaStar Bosch 2400ES - General Installation Specifications
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Voltage
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120 VAC
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Vent Options
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Horizontal or Vertical or Outdoor with AOKO Outdoor Kit
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Gas Connection
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3/4 inch Male NPT
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Water Connections
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3/4 inch Male NPT
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Natural Gas Pressure
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Min: 4" WC
Max: 14" WC
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Propane (LP) Gas Pressure
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Min: 9" WC
Max: 14" WC
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Water Pressure
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Min: 30 PSI
Max: 150 PSI
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AquaStar Bosch 2400ES - Indoor Installation Specifications
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Exhaust Vent Size
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3-inch Stainless Steel
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Combustion Air Pipe Size
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3-inch PVC / Alum. / Galv.
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Vent Options
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Horizontal or Vertical
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Vent Termination
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Horizontal or Vertical
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AquaStar Bosch 2400ES - Outdoor Installation Specifications
The Bosch 2400ES cannot be install outside without the optional Outdoor Installation Kit Model AQOK.
Outdoor Installation approved for climates only where potential freezing conditions are
infrequent and not severe.
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AquaStar Bosch 2400ES - High Altitude Operation
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Propane or Natural Gas Models
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Altitude 0 - 2,000 ft
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No modification
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Altitude 2,000 ft - 8,000 ft
(For FD Codes higher than 892)
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CO2 adjustment with flue gas analyzer required
see manual supplied from unit for instructions
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For operation at elevations above 2,000 ft (610 m) the equipment
ratings shall be reduced at the rate of 4% for each 1000 feet (305m)
above sea level.
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