I understand that once I order this item I cannot cancel or return it. Failure to comply with this could result in substantial property damage, severe personal injury or death. Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption drinking or cooking.
This item is for non-potable non-human consumption water applications only. At this time, we do not carry this unit. We list it on our site because we do sell replacement parts for this unit. Please contact us with any questions: View Details. Submit Please enter a valid email address. I'm sorry, your email address was not found in our system. We no longer carry ES-NG. Unavailable since Feb 15, Need replacement parts for this unit? View Replacement Parts. Provides endless hot water for two major applications at once two showers running simultaneously.
Can replace gallon storage tank water heater. Natural Gas or Liquid Propane. Manuals 1. Speak with a real person who will go out of the way to help! Call or Text Text Call Have suggestions or feedback about this page? Let us know below! Submit Cancel. Thank you for your feedback! Something went wrong please try again! Page 30 Maintenance and service Max. Gas max. This section describes details on programming the appliance. For most applications the factory default Caution: Misadjusted program values will robust and stable operation.
Only adjust the values lead appliance B Press to choose the fan speed suitable with your installation, see Table Page Troubleshooting Troubleshooting Troubleshooting and mixing valves are common causes of plumbing Warning: If you are unable to perform crossovers. Wait 10 minutes and check all taps for pressure hot water can be overpowered. This will water flow. There should be no water flowing. Any shut down the burners because the hot water flow continuous flow of water, small or large, indicates a rate fell below the minimum flow rate required for crossover and must be corrected.
Page 37 Troubleshooting out of adjustment. This will result in unstable burner flames and noise. Ensure gas pressure is in accordance with specifications in section 3. A gas pressure reading is needed to proceed further. Contact your original installer or a local certified gas technician to obtain this reading. Page Problem Solving Problem solving Problem solving Error code diagnostics To remove error code from the display, press the reset button.
Display Cause Solution Fault in the flue gas limiter. Check continuity of the flue gas limiter see Fig. Page 39 5. Check supply voltage. It must be VAC and properly grounded. Possible defective control unit call Bosch Water Heating for further instructions. Ensure that outlet temperature sensor is not placed on any bends in the hot water pipe or misreading may occur.
Check that the sensor is firmly attached to the vertical section of outlet temperature sensor on hot the hot water pipe see Fig. Check red wire connections at outlet temperature sensor. Page 41 The voltage should measure 24VDC between the left pair of wires and 24VDC between the right pair of wires when the unit is operating. If voltage is not proper, contact Bosch Water Heating for further instruction. Gas valve may be defective, contact Bosch Water Heating for further instrucation.
Page Sensor Resistance Charts Sensor resistance charts Sensor resistance charts Outlet temperature sensor characteristics 2 2 2 2 17 10 5 2 12 10 0 2 0 7 2 0 2 19 7 19 2 18 7 18 2 16 7 16 2 14 7 14 2 13 7 13 Page 47 Interior components diagram and parts list Fig. Page Components Diagram Interior components diagram and parts list AA JF Fig.
Page 49 Interior components diagram and parts list Page 50 Interior components diagram and parts list Page 51 Interior components diagram and parts list Page 52 Interior components diagram and parts list Page 53 Interior components diagram and parts list Page Protecting The Environment Protecting the environment Protecting the environment Packing The packing box may be fully recycled as confirmed by the recycling symbol Components Many parts in the heater can be fully recycled in the end of the product life.
Contact your city authorities for information about the disposal of recyclable products. Page Limited Warranty Exceptions Bosch thermotechnology corporation.
However, all replacements are made subject to validation by Bosch This warranty will not apply: thermotechnology corporation of in-warranty coverage. This manual is also suitable for: Gwh es lp Aquastar gwh es ng Aquastar gwh es lp. Print page 1 Print document 56 pages.
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