CP25 Set for ATMOS A 25 Burner

Product detailed description

Pneumatic cleaning systems are essential in pellet-fired heating systems where fuel quality can lead to the formation of clinkers and ash buildup. This is particularly relevant in installations using pellet boilers with lower-grade fuel that contains higher levels of impurities such as bark. The CP25 set is designed for retrofitting into ATMOS A 25 and A 45 burners, ensuring efficient and reliable cleaning of the combustion chamber without manual intervention. The system operates automatically, reducing the need for frequent maintenance and improving the overall efficiency of the boiler. It is commonly used in residential and commercial heating systems where consistent operation and reduced downtime are critical.

Technical parameters

Nominal diameter	DN 28
Weight	33.35 kg
Code	H0521
Brand	Atmos

The nominal diameter of DN 28 is a key factor in ensuring compatibility with the burner’s air supply system and the required air flow for effective cleaning. This parameter helps determine the correct hose and fitting sizes for integration with the boiler and the air compressor. The DN 28 dimension is essential for maintaining the required pressure and flow rate to dislodge clinkers and remove ash effectively.

Installation and connection

The installation of the CP25 set involves connecting the 1 m air hose (DN 28 mm) with a 3/4" ferrule to the burner’s pneumatic system. The solenoid valve must be wired to the control system of the boiler to ensure timed operation. It is important to verify that the air compressor or air tank has a capacity of 5–10 L and can maintain a pressure range of 5–8 bar (500–800 kPa). The compressor must be located close to the boiler to minimize pressure loss and ensure consistent performance. Common installation errors include using standard switching clocks instead of the required specialized ones and neglecting to secure the hose with the correct fittings. Always check the alignment of the cleaning channel and the mounting bracket for the ignition coil before final assembly.

Compatibility and accessories

The CP25 set is compatible with pellet boilers such as D 14 P, D 15 P, D 21 P, and D 25 P. It is designed for retrofitting into ATMOS A 25 and A 45 burners but is not required for the A 85 model, which includes pneumatic cleaning as standard. The set is intended for boilers without an extraction fan and is considered a base set. Additional components such as a specialized switching clock may be required if automatic cleaning is to be disabled during certain hours. No other related products are available for this model.

Technical background for designers

The CP25 system operates by using compressed air to dislodge clinkers and remove ash from the combustion chamber. The air is delivered through a dedicated cleaning channel, which is integrated into the burner’s structure. The solenoid valve controls the timing and duration of the air pulse, ensuring that cleaning occurs at regular intervals or after the burnout phase. The materials used in the system, such as the air hose and solenoid valve, are selected for their durability and resistance to high temperatures. The efficiency of the system depends on the air pressure and flow rate, which must be maintained within the specified range. Proper integration with the boiler’s control system is essential for optimal performance and longevity.

Service and operation

Regular inspection of the air hose and solenoid valve is recommended to ensure there are no leaks or blockages. The cleaning channel and mounting bracket should be checked for wear and proper alignment. If the system is not operating as expected, verify the air pressure and the connection to the control system. No specific service intervals are provided, but routine checks are advised to maintain system efficiency. In case of malfunction, the solenoid valve or air hose may need to be replaced.

Frequently asked questions

Can the CP25 set be used with a boiler other than ATMOS A 25 or A 45?
No, the set is specifically designed for ATMOS A 25 and A 45 burners and is not compatible with other models.

Is it possible to use a standard switching clock with the CP25 set?
No, a specialized switching clock must be used to control the cleaning intervals; standard models are not suitable.

Can the CP25 set be installed without an air compressor?
No, the system requires an air compressor or air tank with a capacity of 5–10 L and a pressure range of 5–8 bar (500–800 kPa) to function correctly.

Does the CP25 set include all necessary components for installation?
Yes, the set includes the air hose, solenoid valve, combustion chamber, mounting bracket, and control module, but an air compressor is required separately.