Bosch 830 ES NG Tankless Water Heater

7703311076

Status: In Stock

was US$3,605.00

now US$1,399.00

Description

Description

 

The Bosch Therm 830 ES Tankless Water Heater, part number 7703311076, is a whole-house indoor natural gas non-condensing tankless water heater designed to deliver continuous on-demand hot water for residential and commercial applications without the standby energy losses associated with traditional storage tank water heaters.

The Therm 830 ES NG operates on a 175,000 BTU/Hr maximum input with electronic ignition and sealed combustion dual-fan technology that draws combustion air from outside the structure, making it suitable for installation in confined indoor spaces. The unit achieves an Energy Factor of 0.82 at 82% thermal efficiency, carries an Energy Star rating, and incorporates advanced software-driven safety and precision controls that monitor operating conditions and modulate burner output in response to hot water demand, along with built-in freeze protection for year-round installation reliability.

Not only does the Bosch Them 830 ES provide instantaneous hot water, but it also offers impressive energy efficiency. By only heating water as needed, this unit helps you save on energy consumption and reduces utility bills. The advanced technology and intelligent controls ensure optimal performance while minimizing energy wastage.

Reliability is at the core of the Bosch Them 940 ES tankless water heater. Built with durability and longevity in mind, it is engineered to withstand the demands of everyday use. Rest assured knowing that you have a dependable hot water solution that will serve you and your family for years to come.

Experience the efficiency, reliability, and endless hot water capabilities of the Bosch Them 830 ES tankless water heater. Upgrade your home with this premium water heating solution and enjoy the luxury of instant hot water on demand. Discover a new level of comfort and convenience with Bosch.

What's Included: Bosch Therm 830 ES NG tankless water heater unit, wall mounting hardware, and installation hardware pack. Venting components are not included and must be purchased separately based on the specific installation configuration. A pressure relief valve is not included and must be sourced and installed separately per local code requirements.

Installation Limits: The Therm 830 ES NG requires a natural gas supply with a minimum inlet pressure of 3.5 inches water column and is not compatible with liquid propane without conversion. The unit supports indoor or outdoor installation; outdoor installation requires a separately purchased outdoor kit. Stainless steel venting is required with a maximum vent run of 61.25 feet, routed vertically or horizontally. Water supply pressure must be maintained between 30 and 150 psi. A 120-volt electrical connection is required for electronic ignition and control board operation.

Compatibility: The Bosch Therm 830 ES NG (part number 7703311076) is one of four Bosch tankless gas water heater models available at RuralEnergy.com. The companion models in the current RuralEnergy.com Bosch gas tankless lineup are the Therm 830 ES Liquid Propane, the Therm 940 ES Natural Gas, and the Therm 940 ES Liquid Propane. The Bosch TSTAT2 ProTankless Wireless Remote is a compatible accessory for this unit, also available at RuralEnergy.com.

Features

Features

  • 82%+ thermal efficiency
  • 175,000 BTU maximum input
  • 8.3 gallons per minute capacity at 35F degree rise
  • 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
  • Can be used in solar thermal, recirculation, and space heating applications
  • Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
  • Available in NG and LP models
  • Optional pipe cover and wireless remote control available
  • Mobile home certified

Specifications

Specifications

Brand: Bosch
Part Number: 7703311076
Model: Therm 830 ES NG
Condensing / Non-Condensing: Non-Condensing
Application: Residential or Commercial
Fuel Type: Natural Gas
Max Input: 175,000 BTU/Hr
Min Input: 19,900 BTU/Hr
Capacity at 35°F Rise: 8.3 gpm
Capacity at 55°F Rise: 5.3 gpm
Intelligent Cascading: Yes
Min Flow Rate: 0.5 gpm
Temperature Range: 100 – 140°F
Temperature Stability: +/- 2°F
Default Temperature: 122°F
Energy Factor: 0.82
Thermal Efficiency: 82%
Energy Star Rated: Yes
NOx Certification: Ultra-Low NOx Certified
Installation Options: Indoor or Outdoor (outdoor kit required for outdoor installation)
Dimensions (W x H x D): 17 7/8" x 31½" x 11¼"
Weight: 67 lbs.
Inlet Connection: ¾" NPT
Outlet Connection: ¾" NPT
Gas Connection: ¾" NPT
Min NG Pressure: 3.5" WC
Max Water Pressure: 150 psi
Min Water Pressure: 30 psi
Venting Options: Stainless Steel
Max Vent Run: 61.25 ft.
Condensing Heat Exchanger: N/A
Freeze Protection: Built-in
Electrical Requirement: 120V AC
Pressure Relief Valve: Not included — must be sourced and installed separately

 

The Bosch Therm 830 ES NG is a non-condensing, Energy Star rated natural gas tankless water heater suited for whole-house residential and commercial hot water applications. It is available at RuralEnergy.com alongside the Therm 830 ES LP, Therm 940 ES NG, and Therm 940 ES LP models in the current Bosch gas tankless lineup.

 

Literature

Support

Support

Diagrams, Troubleshooting, and Support - Learn More

 
Product FAQ

What fuel type does the Bosch Therm 830 ES part number 7703311076 require?

The Bosch Therm 830 ES part number 7703311076 is configured exclusively for natural gas and requires a minimum inlet gas pressure of 3.5 inches water column. It is not compatible with liquid propane without a conversion process. Customers requiring a liquid propane configuration should select the Bosch Therm 830 ES LP (part number 7703411074), also available at RuralEnergy.com. Both models share the same Therm 830 ES platform and feature set but are factory-configured for their respective fuel types.

What hot water flow rates does the Bosch Therm 830 ES NG deliver?

The Therm 830 ES NG delivers 8.3 gallons per minute at a 35°F temperature rise and 5.3 gallons per minute at a 55°F temperature rise. The minimum activation flow rate is 0.5 gallons per minute, meaning the unit will begin firing once water flow reaches that threshold. Customers with higher simultaneous hot water demand requirements should consider the Bosch Therm 940 ES NG, also available at RuralEnergy.com, which delivers 9.4 gpm at a 35°F rise.

Can the Bosch Therm 830 ES NG be installed outdoors?

The Therm 830 ES NG supports both indoor and outdoor installation configurations. Outdoor installation requires a separately purchased outdoor installation kit, which is not included with the unit. Indoor installation uses stainless steel venting with a maximum total vent run of 61.25 feet. The installation configuration should be determined prior to ordering so the correct venting or outdoor kit components can be sourced in advance of the installation date.

What temperature range and stability does the Bosch Therm 830 ES NG maintain?

The Therm 830 ES NG operates across a temperature range of 100 to 140°F with a factory default temperature setting of 122°F. The unit maintains output temperature stability within plus or minus 2°F of the set point across varying demand conditions. The temperature setting can be adjusted at the control panel or wirelessly using the compatible Bosch TSTAT2 ProTankless Wireless Remote, available separately at RuralEnergy.com.

What water pressure requirements must be met for the Therm 830 ES NG?

The Bosch Therm 830 ES NG requires a minimum water supply pressure of 30 psi and is rated for a maximum operating water pressure of 150 psi. Water supply pressure below 30 psi may prevent the unit from firing or maintaining consistent output temperature. Water pressure exceeding 150 psi can damage internal components and must be reduced with a pressure reducing valve installed upstream of the unit prior to connection.

Can the Bosch TSTAT2 wireless remote be used with the Therm 830 ES NG?

The Bosch TSTAT2 ProTankless Wireless Remote is compatible with the Therm 830 ES NG and is available separately at RuralEnergy.com. The TSTAT2 allows the user to adjust the output temperature setting of the heater wirelessly from any room in the home within the unit's 100 to 140°F operating temperature range. Installation requires inserting the TSTAT2 receiver circuit board into the Therm 830 ES NG control panel and connecting it to the motherboard using the included connector wire. Multiple TSTAT2 units can be synchronized to a single heater for multi-room temperature control.

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