Wide power
modulation
Non-condensing
boiler
91 %
High efficiency
6 class
NOx
Gas non-condensing boiler with flow-through water heating. A great advantage of the boiler is the possibility of connection to the original chimney intended for non-condensing boilers. The boiler can also be controlled according to the outdoor temperature (weather-compensated regulation) and it can also be connected to WIFI* and controlled via smartphone. *for connection to a WIFI network, it is necessary to use additional accessories that are not part of the boiler delivery.
Suitable for every type of house, apartment, or business
ATTACK Atmospheric NSK 24 offers heating and DHW (domestic hot water) heating by a flow-through method, which means that heating takes place in real-time as water flows through the boiler heat exchanger, which heats the water and it is immediately available. Therefore, the use of this model is mainly for smaller houses or apartment units.
Gas non-condensing boiler connection
To use a gas non-condensing boiler, it is necessary to have a natural gas connection, which belongs among the most ecological fuels among fossil fuels. For those who would like to have a non-condensing boiler even without a natural gas connection, there is a solution. The boiler can be connected to propane.
ATTACK Atmospheric NSK 24 can be used for several types of gas (G20 natural gas or G31 propane; changing and setting the fuel must be performed by an service technician).
Why choose a gas boiler
Low acquisition cost of the device compared to biomass boilers or heat pumps – it belongs among the cheapest and least maintenance-demanding sources.
Wide range of power modulation
ATTACK Atmospheric NSK 24 has a wide range of power modulation. This is the main technical advantage of our gas boilers. This modulation system consists in the fact that the boiler can operate on low power, for example (from 8.8 kW). It achieves a high efficiency of up to 91% with energy class C for heating.
Quality and efficiency
In the production of boilers, we used brass components for the hydraulic assembly, ensuring maximum product reliability.
The new brass hydraulic group is equipped with:
- High-efficiency pump
- Three-way valve
- By-pass
- Flow regulator with filter
- Drain valve
- DHW temperature sensor
The result is a reduction in the level of NOx and carbon monoxide emissions, which places it in the highest reference class 6 NOx.
Technical data and documents for download
The ATTACK Atmospheric NSK 24 gas non-condensing boiler achieves a high combustion efficiency of up to 91% with wide power modulation. Find out more about other technical data.
- Non-condensing boiler with low emissions
- Max. power 24kW
- Flow-through hot water preparation
- Possibility of connecting the boiler to the original chimney intended for non-condensing boilers
- Simple replacement for an old non-condensing boiler
- Comfort mode (keeps the hot water exchanger heated) for faster hot water supply
- Low CO₂ and NOx emissions
- Low-energy modulating circulation pump
- Wide modulating power range for heating and hot water preparation
- Brass hydraulic group
- Expansion tank 8l
- Digital control panel with backlit LCD display
- Remote control with OpenTherm two-way communication
- Possibility of control via WIFI* and mobile phone
- Possibility of changing the heating gas from natural to propane
- Small dimensions and simple installation
- Weather-compensated regulation and Open-therm regulation
| TECHNICAL PARAMETERS | |||
| Parameter | Jedn. | NSK24 | |
| Gas type | G20 | G31 | |
| Class | II2H3P | ||
| Execution | B11/BS | ||
| Working temperature range (min ÷ max) | °C | 0 ÷ +60 | |
| Rated thermal output | kW | 24 | 24 |
| NOX emission class | 6 | 6 | |
| Efficiency at Qn NCV | % | 90,11 | |
| Efficiency at 30% Qn NCV | % | 90,6 | |
| Expansion vessel | l | 8 | |
| Electrical voltage | V/Hz | ~240/50 | |
| Protection level | IP X4D | ||
| Empty boiler weight | kg | 28 | |
| Length – height – depth | mm | 400 x 727 x 324 | |
High-quality processing
All our products are manufactured with an emphasis on the selection of quality materials and the use of correct technologies and procedures. Brass components of the hydraulic assembly ensure maximum product reliability. Our own know-how is a guarantee of reliable service and long life.
Comfort with OpenTherm regulation
It is also possible to increase the comfort of a gas boiler using a regulator that will adjust the temperature according to the outdoor temperature. The temperature will thus automatically adapt to changes in the household and the outdoor temperature. This method of regulation can more effectively utilize the boiler’s power and at the same time save you money on operation.
In addition, you get greater comfort because the regulator takes care of everything for you. If, however, you want even more convenience, it will be provided by an additional control with OpenTherm two-way communication.
* the weather-compensated regulator is not part of the boiler delivery.
OpenTherm regulation (optional accessory)
The boiler allows connecting OpenTherm regulation, which can not only turn on the non-condensing boiler but also detect the difference between actual room temperature and the set value, allowing boiler power modulation according to the thermal needs of the system. OpenTherm regulation guarantees lower consumption, more stable temperature, and greater comfort for the user. Get maximum comfort.
Smart remote control
ATTACK Atmospheric offers optional accessory OpenTherm room thermostat OT80 and Wifi modem OT81, with which you can control your boiler remotely via the ATTACK Condens mobile application.
Choose a service partner for installation
Creating a high-quality and prompt service network for our customers is very important to us. Our service partners provide prompt service assistance to every customer throughout the year.
