Combined boiler ATTACK SLX COMBI PELLET 25
Combined Boiler ATTACK SLX COMBI PELLET
The ATTACK SLX COMBI PELLET boiler is a multifunctional combined boiler from the 7000 series for both wood and pellets. It is designed to burn both wood and pellets, making the boiler very user-friendly. This model is based on the SLX model and can be converted exclusively to a wood boiler. To optimize the combustion process, a fully automatic Pellet Burner Automatic is used, which provides convenient and fully automatic pellet combustion and incorporates all the advantages of the base SLX boiler model with PROFI control. This boiler is a versatile solution that provides automated and efficient biomass combustion, resulting in an efficiency of up to 91.6%. The boiler is additionally equipped with a burner on which you can adjust power, automatic ignition, post-combustion, and cleaning.
Warranty for ATTACK boilers:
- 24 months
- 36 months if installed with a buffer tank and Laddomat charging unit
Advantages of the Boiler
- Highly efficient tubular heat exchanger
- High combustion efficiency up to 91.6%
- Spacious boiler loading chamber of up to 200 liters
- Made from special 6 mm thick boiler steel for extended durability
- Reduced operating costs Lower operational costs in the season due to the ability to combine fuel types
- Compact design, easy operation, information displayed on LCD screen
- Possibility to connect a temperature sensor to the accumulation tank
- Burner operation controlled by room thermostat or temperature probe
- Possibility of burning wood pellets with diameters of 6 mm, lengths up to 35 mm
- Cooling circuit
- Display of operational states
- Fault diagnosis
High Comfort
When using pellets with the fully automatic Pellet Burner Automatic, the comfort of your heating will be elevated to a higher level. The burner will handle most of the work on its own. It will handle automatic grate cleaning, starting and ending combustion. You can easily control its operation from a warm room via a thermostat, without the need to visit the boiler room.
Spacious Loading Chamber
The loading chamber of this boiler model is as much as 200 liters, which is based on the ATTACK SLX model. The above-standard chamber increases the heating time for one fuel load and allows for adding more wood. If you decide to heat with wood using this boiler, you will save a lot of time converting the boiler to this type of fuel and reduce the size of the wood pieces. Larger pieces of wood save not only time but also extend the duration of burning for one fuel load.
Easy Way to Change Fuel Type
The change of fuel type in the SLX Combi Pellet boiler has been designed to simplify this process as much as possible and optimize the time allocated to it. The conversion from a gasifying boiler to a pellet boiler is very simple and does not require a lot of physical effort. The fully automatic pellet burner is mounted on a positioned pantograph, making it very easy to insert it into the top doors of the boiler and use pellets as fuel. One major advantage of this boiler is the combination of cost-effective and environmentally friendly heat energy obtained from wood gasification and comfort provided by the fully automatic pellet burner.
High Efficiency
The SLX Combi Pellet boiler has been developed with a focus on high quality and efficiency. Thanks to the use of moving turbulators, the boiler can achieve excellent heating parameters. Boiler control is very simple and intuitive, with only PROFI control used in this model. To achieve greater boiler power, we recommend purchasing an accumulation tank together with a Laddomat mixing device. The boiler features automatic shutdown after fuel combustion, automatic cleaning, control of heating pumps and accumulation tank charging, and even heating control via a computer or smartphone.
PROFI Boiler Regulation
If control of multiple devices is needed, it's worthwhile to choose a boiler with PROFI control. PROFI-type control uses a more accurate PID controller, allowing for more efficient parameter regulation. This results in more precise and smooth fan speed regulation, leading to better control of exhaust temperatures and overall boiler efficiency. In addition to PID regulation, the Fuzzy Logic technology contributes to improved combustion efficiency. It uses sensors to monitor combustion and adjusts the process in real-time for optimization. The PROFI regulation system is suitable for complex heating systems. It can control the accumulation tank charging pump, domestic hot water, or heating circulation pump. This system also supports accumulation tanks and prevents their discharge; it will shut down the boiler if fuel runs out.
PROFI Regulation Features
- Suitable for daily heating
- PID regulator – more precise and smooth fan speed regulation
- Fuzzy Logic control sensors
- Controls 2 pumps (heating circulation pump + accumulation tank charging pump or DHW)
- For accumulation tank solutions – built-in logic for charging and protection against discharge
- Simple operation and display showing current operational information (boiler temperature, exhaust temperature, accumulation tank temperature)
- Parameter monitoring (fan operation, DHW/accumulation tank charging pump operation, circulation pump operation)
- Heating circulation pump control via thermostat
- Automatic boiler shutdown after fuel combustion
- Manual adjustment of primary and secondary air
Boiler Structure and Cross-Section
Technical Data
Parameter | 20 SLX CP | 25 SLX CP | 30 SLX CP | 35 SLX CP | |
Nominal Power - Wood [kW] | 20 | 25 | 30 | 35 | |
Nominal Power - Pellets [kW] | 30 | 40 | |||
Power Range - Wood [kW] | 10-20 | 12.5-25 | 15-30 | 17.5-35 | |
Power Range - Pellets [kW] | 8-30 | ||||
Exchange Surface [m2] | 2.95 | ||||
Loading Chamber Volume [L] | 200 | ||||
Wood Loading Opening Size [mm] | 235×445 | ||||
Recommended Chimney Draft [Pa] | 23 | ||||
Max. Operating Water Pressure [kPa] | 250 | ||||
Pressure Loss at (ΔT 10 K) [kPa] | 1.9 | 2.1 | 2.4 | 2.7 | |
Pressure Loss at (ΔT 20 K) [kPa] | 0.8 | 0.9 | 1.2 | 1.6 | |
Boiler Weight [kg] | 610 | ||||
Chimney Connection Diameter [mm] | 150 | ||||
Boiler Height [mm] | 1472 | ||||
Boiler Width [mm] | 703 | ||||
Boiler Depth [mm] | 1350 | ||||
Boiler Depth - with Pellet Burner [mm] | 1650 | ||||
Chamber Depth [mm] | 985 | ||||
Housing Protection Class [IP] | 20 | ||||
Electricity Consumption - Wood [W] | 42 | ||||
Electricity Consumption - Pellets [W] | 96 | 160 | 190 | ||
Boiler Efficiency - Wood [%] | 91.8 | 91.6 | 90.3 | ||
Boiler Efficiency - Pellets [%] | 90.8 | 90.5 | 90.2 | 90.6 | |
CO Emission Class (per EN 303-5) [-] | 5 | ||||
Exhaust Temperature at Nominal Power - Wood [°C] | 165 | 170 | 185 | 170 | |
Exhaust Temperature at Nominal Power - Pellets [°C] | 145 | 152 | 168 | 148 | |
Flue Gas Flow Rate at Nominal Power - Wood [kg/s] | 0.018 | 0.020 | 0.022 | 0.025 | |
Flue Gas Flow Rate at Nominal Power - Pellets [kg/s] | 0.005 | 0.007 | 0.009 | 0.012 | |
Maximum Noise Level [dB] | 65 | ||||
Recommended Fuel Quality - Wood [-] | Dry wood with calorific value of 15 - 17 MJ/kg, moisture content min. 12% - max. 20%, log diameter 80 - 150 mm | ||||
Recommended Fuel - Pellets [-] | Wood pellets, Ø 6 mm, l = 35 mm, moisture up to 12%, according to standards: DIN 51 731 - HP 5, DIN Plus, or EN 14961-2 - A1 | ||||
Average Fuel Consumption - Wood [kg/h] | 6.5 | 7.8 | 9.1 | 10.4 | |
Average Fuel Consumption - Pellets [kg/h] | 2.4-6.9 | ||||
Approximate Seasonal Fuel Consumption [-] | 1 kW = 1 m3 | ||||
Max Log Length [mm] | 550 | 650 | |||
Operating Time at Nominal Power [hours] | 8 | 7.2 | 6.5 | 5.8 | |
Boiler Water Volume [L] | 117 | ||||
Recommended Accumulation Tank Volume [L] | 1500 | 2000 | 2200 | 2500 | |
Power Supply Voltage [V/Hz] | ~230/50 | ||||
Heating Water Temperature Range [°C] | 65 - 90 | ||||
Controller Contact Load [V/A] | 230/2 | ||||
Heating System Connection [-] | G 6/4″ |
Product specification
Thermal power - pellets / wood | 30 / 25 kW |
Exhaust gas pipe diameter | 150 mm |
Weight | 610 kg |
Efficiency | 90.5 % |
Boiler class (303-5:2012) | 5 |
Ecodesign | + |
Water capacity | 117 L |
Height | 1472 mm |
Width | 703 mm |
Depth | 1350 mm |
Loading compartment dimensions | 235 x 445 mm |
Flue gas temperature | 152 °C |
Producer's recommended minimum volume of accumulation tanks | 2000 L |
Opinions
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