ATTACK Condensing KT 20 kW
Code: ACKT20Related products
Product detailed description
- ATTACK Condensing KT 20 - wall-mounted gas boiler
- output 2,4-21 kW
Condensing KT 20 gas boiler
The ATTACK Condensing gas condensing boiler has a wide output modulation range of up to 1:10. This is the main technical advantage of our gas boilers. This modulation system means that the boiler can operate at a low output, for example (from as low as 2.5kW). The boiler has a compact and elegant design with a backlit LCD display and simple controls. The boiler's high efficiency is up to 106% with energy class A for heating. The Intelligent Combustion System with an adaptive gas valve guarantees perfect combustion in all conditions. Safety is one of our main priorities, so we have equipped the boiler with several integrated protective functions. You can read about why you should choose a condensing boiler and what it can work with in the article.
Frost protection
To increase the service life, we have built a function into the boiler that prevents damage to your condensing boiler due to adverse freezing weather. If you leave the boiler connected to gas and electricity, it will take care of everything for you. If the temperature drops below 6 °C, the burner ignites itself and the pump switches on automatically.
Protection against bacteria
We have built a special Anti-Legionella function into the condensing boiler, thanks to which you don't have to worry about proliferating bacteria that thrive in warm water. One of them is Legionella, which thrives at a water temperature of 25–55 °C. The bacteria are killed by heating the water to more than 60 °C. The Anti-Legionella function takes care of heating the water in the DHW storage tank to 65 °C at least once a week for you, regardless of your thermostat settings.
Protection against pump blockage
During prolonged inactivity, dirt can settle in the pump, which could lead to it becoming blocked. That's why we have added a function to the boiler that keeps the pump clean, and if the pump is inactive for 24 hours, the kotol automatically switches it on for approx. 5 seconds to flush it clean.
New stainless steel heat exchanger
The Condensing KT gas boiler is fitted with a stainless steel heat exchanger equipped with extra-wide channels, where the internal area has increased up to four times compared to a commonly used exchanger. Thanks to the new exchanger better thermal efficiency is achieved, better resistance to scale build-up which makes the Condensing KT ideal even when replacing a boiler boiler in an already existing heating system.
Air intake, used to supply the air needed for combustion
Quality and efficiency
In the manufacture of boilers we used brass components in the hydraulic assembly, ensuring maximum reliability of the product. The new brass hydraulic group is equipped with:
- A high-efficiency pump
- A three-way valve
- By-pass
- A flow regulator with a filter
- A drain valve
- A DHW temperature sensor
Gas boiler and comfort control
If you want to save even more with your condensing boiler and want to raise the comfort bar even higher, you can use an weather-compensated controller*, which will let you do this. The controller will adjust the temperature according to the outdoor temperature. The temperature will thus automatically adapt to changes in household and in the outdoor temperature. This method of control can use the boiler and at the same time save you money on operation. In addition, you get greater comfort, because the controller takes care of everything for you. However, if you want even greater convenience, this is provided by additional control with two-way OpenTherm communication.
* the weather-compensated controller is not included in the boiler's delivery.
OpenTherm control (optional accessory)
The boiler allows you to connect an OpenTherm control which can not only switch on the boiler, but also detect the difference between the actual room temperature and the set value, which allows the output of the boiler to be modulated according to the system's heat demands. OpenTherm communication control guarantees lower consumption, a more stable temperature and greater comfort for the user. Get maximum comfort.
- Option to prepare hot water in an external storage tank
- Condensing heat exchanger made of stainless steel with extra-wide water channels
- Compact and elegant design
- Easy to operate with high efficiency of up to 106% and gas savings
- High modulation ratio 1:10
- Intelligent adaptive gas valve
- Brass hydraulic group
- ICS (Intelligent Combustion System) guarantees perfect combustion in all conditions
- Safe and easy to use thanks to integrated protective functions
- Backlit LCD display with self-diagnostics and simple controls
- Class 6 NOx
Energy class for heating A
| Parameters | Unit | ATTACK CONDENSING KT 20 |
| Maximum central heating thermal input | kW | 25 |
| Minimum central heating thermal input | kW | 2,5 |
| Maximum central heating thermal output | kW | 21 / 19,4 |
| (50/30°C) / (80/60°C) | ||
| Minimum central heating thermal output | kW | 2,4 |
| (80/60°C) | ||
| Gas supply pressure G20 | mbar | 20 |
| Gas supply pressure G31 | mbar | 37 |
| NOx emission class | – | 6 |
| Max./min. operating pressure for heating | bar | 3/1 |
| Efficiency class per Directive 92/42/EEC | – | A |
| Protection rating | IP | IP X5D |
| Electrical voltage | V/Hz | 240/50 |
| Electrical input | W | 73 |
| Weight of the empty boiler | kg | 28,1 |
| Dimensions (W×H×D) | mm | 400x727x324 |
Additional parameters
| Category: | Attack |
|---|---|
| Warranty: | 2 years |
| Weight: | 28.1 kg |
| Country of origin: | EU |
| Option to operate without a thermostat: | Yes |
| Storage tank connection option: | yes |
| Electrical voltage connection: | 230V |
| Boiler commissioning: | by an ATTACK service technician |
| Boiler intended use: | with the option to connect a storage tank |
| Suitable for underfloor heating: | yes |
| Boiler heating output: | high output above 16 kW |
| Manufacturer: | Attack |
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About the company
The product ATTACK is manufactured using the most modern production technologies available to us. As the most significant Slovak manufacturer of heating technology with purely Slovak capital and a single owner, we fully understand that each production process is reflected in the lifespan of this product and, of course, in your satisfaction. Therefore, we use only the best – from special boiler sheet metal through precise laser cutting of materials, to the most important – waterproof welds, which we perform exclusively robotically in precise fixtures, thus eliminating the human factor. All ATTACK products are high-quality premium products made using the most modern technology based on the latest research. The products have quality certificates from renowned testing laboratories and meet the conditions for the allocation of state subsidies.
History of the company ATTACK
The production site of the company is located in the northern part of central Slovakia, about 20 km from the city of Žilina. Our company, which is engaged in the production of heating technology, started production in 1995 with stationary boilers and gradually expanded its production to today's level, where it produces a wide range of wall-mounted condensing boilers, stationary boilers, solid fuel boilers and TÚV tanks. The company ranks among medium-sized companies covering an area of approximately 5000 m2 covered area and about 1000 m2 uncovered area. Boiler production takes place in our own production halls and has its own development, design, sales and export to foreign markets.
Company profile and vision
“The main goal and philosophy of the company is to develop top products with the highest quality, functionality and design, which achieve the highest combustion efficiency with regard to the environment while maintaining a favorable price.“
The company ATTACK and product portfolio
We offer a wide selection of products that differ by type of fuel and power. All boilers are equipped with components from world manufacturers produced by the most modern technology, production controlled by camera and computer systems and tested by the most progressive devices and methods. In each group there is a wide range of choices both in modifications and in power. Boilers are mainly intended for heating of family houses, apartments and also larger businesses. The company profile includes a portfolio containing boilers for biomass, gas, electricity and accessories. In the production of boilers we use renewable energy source and that is photovoltaic panels with a power of 200kWp, which provide sufficient electrical energy for production.
Export and service
The company ATTACK exports its products to more than 51 countries around the world. Currently we export our products to all EU countries, Russia, USA, Canada and New Zealand. The biggest interest abroad is in modern wood gasifying and pellet and combined boilers, which are currently very popular in Europe and on the American continent as well as in stationary gas boilers, which reliably represent us even in distant Siberia.
A special approach to each customer, accommodating negotiations and reliability quickly grow into mutual trust, which ensures us a constant growth of customers in other countries.
Our service partners are trained in our own training center, which is equipped with products involved in real operation. Our partners are trained in two phases – theoretical and practical – where they have the opportunity to apply the theoretical part into practice and try everything on the products.The company ATTACK, s.r.o. covers the service network throughout the territory of Slovakia. In case of a breakdown, we can help you with up to 705 service organizations, whose professionally trained service technicians can quickly resolve any problem with an ATTACK product for heating of family houses, apartments or businesses.
Company profile – Research and development
The company ATTACK, s.r.o. has its own research and development center, where development and technical staff of the company annually innovate and prepare new heating technology devices. Emphasis is placed on the simplicity of device operation, modern design, environmental tolerance and minimal dimensions. All products are designed and developed in accordance with the relevant standards, specifications, legal and other regulations. The selection of components for ATTACK products is subject to the strictest criteria and only reliable and long-term operation verified components and materials from renowned suppliers can be used.
In development, ATTACK, s.r.o. does not cooperate with other manufacturers, but strives to always be one step ahead of the competition.
The company ATTACK – Certificates and awards
The company ATTACK, s.r.o. is the holder of the quality certificate ISO 9001:
- for the design and development of boilers,
- for the production of boilers,
- service of devices and boilers
We place high emphasis on the quality of our products. We are the holders of the quality management certificate ISO 9001 since 2003. This quality certificate of international directive certifies activities in research and development, production, design and operation of gas equipment. The approval certificate was approved and issued by the prestigious London-based auditing company Lloyd’s Register Quality Assurance.
The demanding requirements placed on the company are also evidenced by the need to defend the certificate from the certification company LRQA every 3 years.
This quality management system indicates the progressiveness and positive approach of the company ATTACK, s.r.o. to the customer, to whom it proves its quality of a purely Slovak traditional company. The management system also emphasizes the company's strategy, which leads to its compliance, further development and improvement. All ATTACK® products are high-quality premium products made using the most modern technology based on the latest research. The products have CE, TÜV, GOST certificates from renowned testing laboratories around the world.
We regularly participate in domestic and foreign exhibitions of heating technology, where the company has received a whole range of awards from honorable mentions to gold medals.