30 years of development and manufacturing
Category: Gas boilers
Discover ATTACK Condensing gas boilers
Explore the KT 20 and KT 28 output options, their connections and heating features.
For homes and apartments
Gas
A condensing gas boiler needs a connection to natural gas, one of the lower-emission fossil fuels. If natural gas is unavailable, the boiler can be connected to propane instead.
ATTACK Condensing KT 20/28 can run on different gas types (G20 natural gas or G31 propane). Fuel conversion and adjustment must be carried out by an ATTACK service technician.
Benefits
Fuel
Heating with on-demand hot water
Technical features of ATTACK Condensing KST 24
ISC control, on-demand water heating and weather-compensated control are described on the product page.
ISC
The intelligent combustion system regulates combustion and adjusts settings such as gas flow to maintain the correct air-to-gas ratio.
Heat exchanger
Hydraulic assembly
The new brass hydraulic assembly is equipped with:
Protection
DHW
KST 24 heats domestic hot water on demand inside the boiler. Water is heated as it is drawn through the heat exchanger, so no separate tank is needed.
ATTACK Condensing KST 24 gas boiler options
Explore cascade connection and mobile control options for the gas boiler.
Can be connected in a cascade
ATTACK Condensing boilers are designed to support cascade connections of up to four boilers. A cascade controller, available as an accessory, is required. The cascade controller intelligently manages the connected boilers and gives you full control of the system.
OpenTherm control (optional accessory)
OpenTherm control does more than switch the boiler on. It compares the actual room temperature with the set temperature, allowing the boiler output to respond to the heating demand. OpenTherm control helps lower consumption, maintain a steadier temperature and improve comfort.
Smart remote control
Optional accessories include the OT80 OpenTherm room thermostat and OT81 Wi-Fi modem. Together with the ATTACK Condens mobile app, they let you control the boiler remotely.
Technical information about boiler components
This interactive map is based on the labelled cutaway and component descriptions on the ATTACK product page.
Detailed specifications
Check the manufacturer's current documentation before designing the heating system.
| Parameter | Unit | ATTACK Condensing KST 24 |
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Product materials
Videos
Customer support
ATTACK service partners can help design, install and maintain the heating system. Ask an expert to assess whether the boiler and chimney are suitable.
Service supportOther condensing boilers
Output selection should be handled by an expert
Send us some details about your home and heating system. We will connect you with an expert partner who can check the design and installation.
