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The Nefit 9700i gas condensing boiler represents the next step in heating comfort. It provides the optimal foundation for efficiently heating your home. The device can be easily expanded with a hybrid heat pump or solar water heater and offers high efficiency, optimal performance, and no compromises. The Nefit 9700i is the ideal HR appliance: quick to install, easy and economical to use, and future-proof. Thanks to its modern design with a metal casing and high-quality materials, the device guarantees reliable performance and a long service life.
The Nefit 9700i is future-ready: internet-enabled, hybrid-ready, and prepared for a mix of natural gas and hydrogen. This modern boiler can be combined with a room thermostat of your choice, such as the wireless internet thermostat CR20 RF with the Bosch HomeComfort app or the smart Bosch EasyControl thermostat in combination with the EasyControl app. This allows you to conveniently regulate the temperature in each individual room.
The 9700i is up to 75% more efficient due to its wide modulation range. The high hydraulic efficiency ensures maximum efficiency. Additionally, the intelligent speed control is based on both device power and pressure difference, resulting in optimal performance.
Up to 20% hydrogen possible thanks to multi-gas block
Maintenance- and user-friendly
Includes flue gas adapter
Sustainable components
Proven aluminum heat exchanger
| Feature | Value |
|---|---|
| Brand | Nefit |
| Supplier Code | 7736702504 |
| EAN Code | 4062321878962 |
| Discount Group | 008 |
| Width | 520 mm |
| Height | 735 mm |
| Depth | 425 mm |
| Number of Phases | 1 |
| Energy Efficiency Class | A |
| Flow Connection | Knel |
| Return Connection | Knel |
| Frequency | 50 Hz |
| Connection Voltage | 230 V |
| Closed Design | Yes |
| Energy Efficiency of Water Heating (Nwh) | 91.1% |
| Capacity Profile | XL |
| Max. Hydrogen Content (Natural Gas Blend) | 20% |
| Suitable for Low-Calorific Natural Gas | Factory Setting |
| Suitable for High-Calorific Natural Gas | Manually Adjustable |
| Suitable for Propane | With Conversion Kit, Not Included |
| Suitable for Butane | Not Suitable |
| Suitable for Methane | Not Suitable |
| Suitable for LPG | With Conversion Kit, Not Included |
| Suitable for Hydrogen | Manually Adjustable |
| Heat Exchanger Material | Aluminum |
| Built-in Pump Control | Yes |
| Nominal Load (Hs) | 46.4 kW |
| Minimum Operating Pressure | 0.5 bar |
| Minimum Return Temperature | 7 °C |
| Maximum Gas Inlet Pressure | 30 mbar |
| Built-in Weather-Dependent Controller | Yes |
| Built-in Expansion Vessel | No |
| Nominal Power 80-60 °C | 47.8 kW |
| Maximum Flow Temperature | 82 °C |
| Maximum Operating Pressure | 3 bar |
| Built-in Fill/Drain Valve | No |
| Built-in Overpressure Valve | Yes |
| Pipe Diameter Flow | 28 mm |
| Pipe Diameter Return | 28 mm |
| Fuel Connection | External Thread |
| Fuel Pipe Diameter | 30 mm |
| Air Supply Connection | Other |
| Nominal Air Supply Channel Diameter | 80 mm |
| Flue Gas Connection | Other |
| Condensate Connection | Other |
| Condensate Pipe Diameter | 30 mm |
| Minimum Gas Inlet Pressure | 20 mbar |
| Nominal Flue Gas Channel Diameter | 80 mm |
| Burner Control High/Low | Yes |
| Burner Control Modulating | Yes |
| Expansion Connection Pipe Diameter | -1 mm |
| Built-in Manometer | No |
| Condensing | Yes |
| Efficiency | 107% |
| Pilot Flame | No |
| Second Return Connection | No |
| Control Signal On/Off | Yes |
| Control Signal High/Low | No |
| Control Signal 0-10V | No |
| Control Signal OpenTherm | No |
| Operation as Open Design (Air Supply) | Yes |
| Nominal Power 50-30 °C | 49.9 kW |
| Nominal Diameter Flow | Other |
| Nominal Diameter Return | Other |
| Nominal Diameter Fuel | Other |
| Nominal Diameter Condensate | Other |
| Expansion Connection | Other |
| CW Label | 4 |
| Gaskeur HR | Yes |
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