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Bosch 7703411074 Therm 830ESLP BTU Input Indoor Tankless Water Heater Electronic Ignition (Liquid Propane)

SKU kpi041-7703411074
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Product details

SKU: kpi041-7703411074
Manufacturer: Bosch Water Heater
Manufacturer Part Number: 7703411074
Capacity: 175000 BTU
Shipping Weight: 80
Depth: 11.25
Width (inches): 17.875
Height (inches): 30.5

Product description

Bosch Therm 830ES LP / ProTL 175L (Liquid Propane) Tankless Water HeaterAt 175,000 maximum BTUs the Bosch 830 ES LP (Liquid Propane) is our highest capacity non-condensing tankless water heater. The Bosch Therm 830ES-LP was designed to meet the demands of busy households and offers the premium features you expect from Bosch. This model can be installed almost anywhere thanks to its sealed combustion and dual-fan technology. It features an electronic ignition system and requires either 3 inch or 4 inch diameter stainless steel vent pipe and can be vented either through the side wall or up through the roof.This heater is Energy Star rated.This heater comes with built-in freeze protection and a water filter that is externally accessible, but does not come with a PRV.


  • Having 82%+ thermal efficiency
  • 175,000 BTU maximum input
  • 8.3 gallons per minute capacity at 35F degree rise
  • 180 Degree outlet water capability with high temp kit
  • Minimum activation flow rate of 0.5 gallons per minute
  • Electronic ignition and patented burner design
  • Exclusive safety and precision controls
  • Built in freeze protection
  • Vents vertically or horizontally with 3” or 4” stainless steel
  • Intelligent cascading up to 24 units
  • Available in NG and LP models
  • Ultra low NOx Certified
  • Digital display for accurate temperature setting
  • Built for durability and serviceability with 15-year heat exchanger warranty

Additional Information

Gas TypeLiquid Propane
Product TypeWhole House
Heater StyleTankless
Capacity @ 35 Deg F Temp Rise (GPM)8.3
Capacity @ 45 Deg F Temp Rise (GPM)6.3
Capacity @ 55 Deg F Temp Rise (GPM)5.3
Maximum Input (BTUs)175000
Minimum Input (BTUs)19900
Maximum Output (BTUs)147000
Minimum Output (BTUs)18300
Altitude Test (Ft)4500
Temperature Range (Deg F)100 - 140
Venting OptionsCat III Stainless Steel
Venting Diameter (Inches)3 or 4
Vent Maximum Run (Ft)61.25
Gas Connection (Inches)3/4 NPT
Water Connections (Inches)3/4 NPT
Activation Flow Rate (GPM)0.5
Water Pressure Rating (PSI)30 - 150
Energy Factor0.83
Thermal Efficiency (%)82
Electrical Requirements (AMPS / V) <=2.50/120
Remote ControlOptional Wireless TSTAT2 Available

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