The Nefit 9700i HR combination boiler with storage water heater represents the next step in heating comfort. It provides the optimal foundation for efficiently heating your home. The unit can be easily expanded with a hybrid heat pump or solar water heater and stands for high efficiency, optimal performance, and no compromises. The Nefit 9700i is the ideal HR device: 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 unit guarantees reliable performance and a long lifespan.
This combination unit features a built-in, energy-efficient 40-liter stainless steel boiler, offering various possibilities. When hot water is needed in multiple places in the home simultaneously, the Nefit 9700i AquaPower ensures optimal comfort and energy efficiency, regardless of the users' habits and needs.
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 easily regulate the temperature in each individual room.
The 9700i is up to 75% more energy-efficient thanks to its high modulation range. The high hydraulic efficiency ensures maximum effectiveness. 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 | 7736702505 |
| EAN Code | 4062321878979 |
| Discount Group | 008 |
| Width | 920 mm |
| Height | 735 mm |
| Depth | 425 mm |
| Number of Phases | 3 |
| Flow Connection | BSPP-G (ISO 228-1) External Thread |
| Return Connection | BSPP-G (ISO 228-1) External Thread |
| Nominal Voltage | 230 V |
| Frequency | 50 Hz |
| Closed System | Yes |
| Nominal Hot Water Power | 34.4 kW |
| Nominal Load Hot Water (Hs) | 34.4 kW |
| Nominal Load Hot Water (Hi) | 5.1 kW |
| Energy Efficiency Water Heating (Nwh) | 98% |
| Capacity Profile | XL |
| Energy Efficiency Class Space Heating | A |
| Energy Efficiency Class Water Heating | A |
| Nominal Diameter Hot Water | 3/4" (20) |
| Built-in Economizer | No |
| Max. Hydrogen Percentage in Natural Gas Mix | 20% |
| Suitable for Low-Calorific Natural Gas | Factory Setting |
| Suitable for High-Calorific Natural Gas | Factory Setting |
| Suitable for Propane | With Conversion Kit, Not Included |
| Suitable for Butane | Not Suitable |
| Suitable for Methane | Not Suitable |
| Suitable for LPG | Not Suitable |
| Suitable for Hydrogen | Not Suitable |
| Heat Exchanger Material | Aluminum |
| Adjustable Heating Power | Yes |
| Nominal Diameter Cold Water | 3/4" (20) |
| Built-in Pump Control | Yes |
| Nominal Load (Hi) | 27.3 kW |
| Nominal Load (Hs) | 30.2 kW |
| Minimum Operating Pressure | 0.8 bar |
| Minimum Return Temperature | 7 °C |
| Max. Gas Pressure | 30 mbar |
| Hot Water Capacity at 60 °C | 18 l/min |
| Built-in Weather-Dependent Regulator | No |
| Built-in Expansion Vessel | No |
| Nominal Power 80-60 °C | 29.6 kW |
| Max. Flow Temperature | 82 °C |
| Max. Operating Pressure | 3 bar |
| Built-in Fill/Drain Valve | No |
| Built-in Overpressure Valve | Yes |
| Pipe Diameter Flow | 25 mm |
| Pipe Diameter Return | 25 mm |
| Fuel Connection | BSPP-G (ISO 228-1) External Thread |
| Pipe Diameter Fuel | 15 mm |
| Air Supply Connection | Plug-in End |
| Nominal Air Duct Diameter | 80 mm |
| Flue Gas Connection | Plug-in End |
| Pipe Diameter Cold Water | 20 mm |
| Pipe Diameter Hot Water | 20 mm |
| Condensate Connection | Flexible |
| Pipe Diameter Condensate | 30 mm |
| Minimum Gas Pressure | 20 mbar |
| Cold Water Connection | BSPP-G (ISO 228-1) External Thread |
| Hot Water Connection | BSPP-G (ISO 228-1) External Thread |
| Nominal Flue Gas Pipe Diameter | 80 mm |
| Burner Control High/Low | Yes |
| Burner Control Modulating | Yes |
| Built-in Manometer | No |
| Condensing | Yes |
| Efficiency | 107% |
| Pilot Flame | No |
| Second Return Connection | No |
| Control Signal On/Off | Yes |
| Control Signal High/Low | Yes |
| Control Signal 0-10V | Yes |
| Control Signal OpenTherm | No |
| Operation as Open System Possible | Yes |
| Nominal Power 50-30 °C | 31.1 kW |
| Hot Water Storage | 40 l |
| Conversion Kit Required | Yes |
| CW Label | 6 |
| Gaskeur HR | Yes |
