Gasket under burner fan Atmos A25

Product detailed description

This sealing gasket is a component of the combustion air system in solid fuel boilers equipped with pellet burners. It is installed between the fan housing and the burner casing to prevent air leakage and ensure efficient airflow distribution. In industrial and residential installations, this part is used during maintenance or replacement of fan assemblies to restore sealing integrity.

Installers working on Atmos A25 burners encounter this part during routine servicing or when replacing the fan unit. It plays a crucial role in maintaining consistent air flow to the combustion chamber, which directly affects the boiler’s thermal performance and emissions control. Accurate fit and material compatibility are essential for long-term functionality.

Technical parameters

Dimensions	72 x 79 mm
Weight	0.012 kg
Code	S0156
Brand	Atmos

The specified dimensions define the physical fit of the gasket within the system. These measurements determine whether the gasket will align correctly with the fan flange and burner casing. The weight indicates the compactness of the part and is relevant for logistics and handling during installation.

Installation and connection

To install the gasket, the old sealing should first be removed carefully to avoid damaging surrounding components. Clean both mating surfaces thoroughly to remove dust, debris, or residue. Align the gasket precisely with the flange and secure the fan housing using the appropriate bolts. Ensure even tightening of all fasteners to prevent distortion or uneven compression. Common errors include misalignment, insufficient cleaning, or over-tightening, which can lead to leaks or mechanical stress.

Compatibility and accessories

This gasket is specifically designed for the Atmos A25 pellet burner and compatible with IWABO burners from serial number 15810 onwards. It is typically used together with the fan unit. When replacing, ensure the corresponding fan model is also available. Related product: Burner Fan Atmos A25.

Technical background for designers

This gasket is made to provide a durable seal in environments with fluctuating temperatures and vibrations caused by the fan motor. The material must resist thermal expansion while remaining flexible enough to maintain contact under dynamic conditions. Its correct positioning supports the burner’s air regulation system, ensuring uniform air distribution and optimal combustion. Longevity depends on proper installation, regular inspection, and avoiding exposure to foreign substances or excessive mechanical strain.

Service and operation

During routine servicing, inspect the gasket for signs of wear, cracks, or distortion. Check for air leaks around the fan assembly by observing flame stability and listening for unusual noises. Replace the gasket if any damage is detected. No specific service intervals are provided; inspection should occur during scheduled maintenance or when operational anomalies arise.

Frequently asked questions

Is this gasket suitable for all versions of the Atmos A25 burner?
It is designed for the standard Atmos A25 and compatible with IWABO models from serial number 15810 onwards. Always verify the exact model specifications before installation.

What tools are needed for replacing this gasket?
A basic toolkit including a screwdriver and wrench is sufficient. Clean rags or brushes may also be required for surface preparation.

Can I reuse the old gasket during maintenance?
No. Once removed, the gasket loses its sealing properties and must be replaced with a new one to ensure airtight performance.