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PLEASE NOTE: The Bosch 250SX has been replaced by the Bosch AquaStar 2400E

Bosch 250SX NG (Natural Gas)       Bosch 250SX LP (Liquid Propane)

AQ3 Vent Kit $229.00        TSTAT2 Remote $166.00

The Bosch AquaStar 250SX can supply hot water for two major applications (such as showers) simultaneously.Certainly the engineers at Bosch have outdone themselves the beauty of this unit is in its simplicity. The AquaStar 250SX requires no special tools to install or maintain. And its compact size and sealed combustion enables installation in small spaces. A built-in power vent makes both vertical and horizontal venting possible while the electronic ignition maximizes energy efficiency. This unit yields enough power to supply two showers simultaneously and features an adjustable temperature control for improved comfort.

With an average life expectancy of more than 20 years, energy savings of up to 50%, and an endless supply of hot water, your family will thank you for years to come. Easy to install with multiple venting options, the Bosch AquaStar 250SX LP is the right choice.

The Bosch AquaStar 250SX features the following:

  • Delivers up to 6.4 gallons per minute, enough to run two showers at once
  • Direct vent room-sealed combustion
  • No standing pilot! (Electronic ignition)
  • Built-in power vent allows for vertical or horizontal venting
  • 12-year warranty on heat exchanger 2 years on parts
  • Computer-adjusted fuel and air mixture optimizes performance
  • Optional remote thermostat (TSTAT2) available to digitally control output temperature
  • State-of-the-art Bosch quality and engineering

The Bosch AquaStar 250SX offers endless hot water for 2 major applications at a time.

 

Bosch AquaStar 250SX Specifications

BTU Input 175,000 (51.2 kw)
Energy Factor .85
Average Efficiency 87% (recovery efficiency)
Ignition Electronic
Voltage 120 VAC 50/60 Hz
Exhaust Vent Size 3"
Combustion Air Pipe Size 3"
Venting (Exhaust) Diameter: 3 inch
Material: Stainless Steel (AL29-4C) sealed
Minimum length: 3 ft.
Maximum length: 26 ft. (8m) with one 90 degree elbow. Less 2.5 ft. for each additional 90 degree elbow
(1.25 ft for each 45 degree elbow)
Venting (Intake)
(Room-sealed installation)
Diameter: 3 inch
Material: PVC, Aluminum or Galvanized
Maximum length: 26 ft. (8m) with one 90 degree elbow. Less 2.5 ft. for each additional 90 degree elbow (1.25 ft for each 45 degree elbow)
Minimum Flow Rate (gpm) .8 gpm (3 l/m)
Capacity
Activation .8 gpm (3 l/m)
90 F rise / 3.1 gpm
80 F rise / 3.5 gpm
70 F rise / 4.0 gpm
60 F rise / 4.7 gpm
50 F rise / 5.7 gpm
45 F rise / 6.35 gpm
Weight 47 lbs. (21 kg)
Optional Accessories Horizontal Vent Kit
Wireless Remote control
 

IMPORTANT 250SX Venting Information

  NOTE: This appliance's exhaust must be vented to the outside with a sealed 3" stainless steel vent pipe (AL29-4C). The appliance's flue gases are under positive pressure and must travel through a stainless steel 3" pipe that is sealed gas tight. Stainless steel vent pipe is equipped with sealing gaskets for ease of installation, proper safety and durability. The heater shall not be vented in combination with any other appliance and the appliance must only be vented with a dedicated sealed vent system.

 

COMBUSTION AIR
Because the Bosch AquaStar 250SX has direct vent room-sealed combustion, it can obtain make-up (combustion) air from inside the home (ambient air) or from outside the home. It is recommended to pipe the combustion air from outside the home as this is generally cleaner air, allowing for less maintenance on the water heater and a longer life expectancy of the unit.

  Horizontal Venting Vertical Venting
 

  If you will be terminating the vent pipe from the Bosch AquaStar Model 250SX horizontally out a sidewall, the AQ3 Vent Kit is required. Please click here for additional information If you will be terminating the vent pipe from the Bosch AquaStar Model 250SX vertically up a chimney, the AQ3 Vent Kit is not required. PLEASE NOTE: Additional venting components can be obtained by calling 888-726-9752.
     
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