 
THIS HEATER REPLACES THE BOSCH MODEL 125 HX
Robert Bosch, Inc., developed the 1600H patented hydro-generated ignition system that requires no standing pilot, electricity, or batteries. The Aquastar 1600H is the first tankless natural gas water heater to use this technology for pilot ignition. Hydro-generated ignition works much like the giant turbines in a hydroelectric dam using the flow of water to generate electricity. When a hot water tap is opened, cold water flows through the 1600H's hydro generator. The flowing water spins a tiny turbine, which, in turn, instantly produces electricity. This electricity creates the spark required to light the burners and the water is then heated as it passes through a copper heat exchanger. This hydro-generated technology produces multiple important benefits: Eliminates the need for any additional energy source. Only flowing water and gas are required Uses energy only when you call for hot water - 82% efficiency Eliminates worries about dead batteries and the need to constantly change batteries Simplifies installation dramatically by eliminating the need for an electrical connection 1600H | Endless hot water for 1 major application at a time | | |  |  |  |  |
AquaStar Model 1600H Tankless Water Heaters
Technical Information about model 1600H Series Water Heaters
| | Specifications | | Model | 38B | 1600H | 125FX | 125B | 125BL | 125BS | | Energy Factor | .66 | .80 | .78 | .69 | .69 | .69 | | Efficiency | 80% | 82% | 80% | 82% | 82% | 82% | | BTU/input | 40,000 | 117,000 | 125,000 | 117,000 | 117,000 | 117,000 | | Minimum Flow Rate GPM | 0.6 | 0.5 | 0.5 | 0.5 | 1.8 | 0.5 | | @ 45° rise | 1.3 GPM | 4.0 GPM | 4.0 GPM | 4.0 GPM | 4.0 GPM | 4.0 GPM | | @ 55° rise | 1.0 GPM | 3.3 GPM | 3.3 GPM | 3.3 GPM | 3.3 GPM | 3.3 GPM | | @ 65° rise | 0.9 GPM | 2.8 GPM | 2.8 GPM | 2.8 GPM | 2.8 GPM | 2.8 GPM | | @ 75° rise | 0.8 GPM | 2.4 GPM | 2.4 GPM | 2.4 GPM | 2.4 GPM | 2.4 GPM | | @ 90° rise | 0.6 GPM | 2.0 GPM | 2.0 GPM | 2.0 GPM | 2.0 GPM | 2.0 GPM | | Flue Size | 4" | 5" | 4" | 5" | 5" | 5" | | Water Inlet | 1/2" NPT | 1/2" NPT | 1/2" NPT | 1/2" NPT | 1/2" NPT | 1/2" NPT | | Gas Inlet Connection | 1/2" NPT | 3/4" NPT | 1/2" NPT | 1/2" NPT | 1/2" NPT | 1/2" NPT | | Min. Natural Gas Line | 1/2" NPT | 3/4" NPT | 3/4" NPT | 3/4" NPT | 3/4" NPT | 3/4" NPT | | Min. LP Gas Line | 3/8" | 5/8" | 5/8" | 5/8" | 5/8" | 5/8" | | Height | 25 3/8" | 25 3/4" | 29 3/4" | 29 3/4" | 29 3/4" | 29 3/4" | | Width | 10 5/8" | 16 3/4" | 18 1/4" | 18 1/4" | 18 1/4" | 18 1/4" | | Depth | 9 1/8" | 8 1/2" | 8 3/4" | 8 3/4" | 8 3/4" | 8 3/4" | | Shipping Weight | 25 lbs | 33 lbs | 51 lbs | 44 lbs | 44 lbs | 44 lbs | | Recom. Min. Water Pressure | 18 PSI | 18 PSI | 18 PSI | 18 PSI | 18 PSI | 18 PSI | | Max. Water Pressure | 150 PSI | 150 PSI | 150 PSI | 150 PSI | 150 PSI | 150 PSI | | Min. LP Gas Pressure | 11" W.C. | 11" W.C. | 11" W.C. | 11" W.C. | 11" W.C. | 11" W.C. | | Min. Natural Gas Pressure | 7" W.C. | 7" W.C. | 7" W.C. | 7" W.C. | 7" W.C. | 7" W.C. | |
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Tank VS Tankless
Aquastar Warranty Information
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