250SX, 125HX, 125FX Bosch Aquastar tankless water heaters are far superior to the conventional water heater efficiency. The Bosch 250SX-NG can supply 2 showers at the same time at a rate of up to 6.3 gallons per minute*. The Bosch Aquastar 250SX features a built-in digital thermostat and is room sealed.
Room sealed means it can be installed in a small space with the ability to take in air from the outside via a 3" intake vent. The Bosch AquaStar 250SX can be vented vertically or horizontally to the outside.The unit requires a 3" stainless steel single wall vent pipe. The 250SX also requires an electrical connection for the electronic ignition. The Bosch tankless water heater is perfect for most 2-3 bathroom homes, and can serve as an excellent source of radiant heat energy.
Bosch Tankless hot water heater specs:
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| Natural Gas Input |
175,000 Btu |
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| Gas Connection |
3/4" NPT |
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| Water Connections |
3/4" NPT |
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| Water Pressure |
Min. .8gpm |
Max. 6.3gpm |
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| Ignition |
Electronic Ignition |
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| Electrical Supply |
AC 120 V |
A Bosch 250 sx is best suited for a 2-3 bath home with the following fixtures. (Not to be run all at once, under normal use)...
- 2-3 Tub/Shower
- 2-3 Bathroom Sink
- 1 Dishwasher
- 1 Kitchen Sink
- 1 Washing Machine
Moderate fill time for whirlpools, no jetted shower systems, max 6.3 gpm flow please refer to the flow chart .
All Other Parts
If any other part fails within two (2) years after original installation and operation, CEC will furnish a replacement part free of charge.
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| 12 YEAR Heat Exchanger Warranty |
| If the heat exchanger fails within twelve (12) years after the original installation and operation, CEC will furnish a replacement heat exchanger. However, if the water heater is installed in other than a single family dwelling, or is used as a circulating heater in any application, this heat exchanger warranty is limited to two (2) years from date of original installation and operation. |
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