ATMOS P21 pellet boiler

compact, low-maintenance and user-friendly pellet heating system

Information regarding funding!

The Atmos P series is eligible for subsidies without a particle separator starting at 25 kW. The lower-capacity boilers only meet the requirements with a particle separator.

For this reason, we only offer the eligible options online.

Should you choose the version without a particle separator For the 14-21 kW boilers, or if you prefer the particle separator for the P25 variant, please contact us and we will create a customized offer for you.

Request a quote

Pellet boiler Atmos P

The boilers of the ATMOS P Pellet boiler series – the P14, P21 and P25 are characterized by being automatic, compact, and easy to maintain and operate. Pellet heating ATMOS P-series boilers, with a nominal heat output of 14–24 kW for 6–8 mm wood pellets, cover the heating needs of single-family and multi-family homes. These boilers are pellet-only and can be operated independently or, often, in combination with a separate wood-fired boiler. Depending on the installation, the burner can be mounted on the left or right side of the unit. Pellet boiler It can be mounted. This, in turn, offers the advantage that it doesn't get in the way during cleaning, and all surfaces are easily accessible to the user after opening the large boiler door. The pellet feed is carried out, as with our other models. Pellet boiler Pellets are fed into series via a screw conveyor from a separate ATMOS silo, textile storage unit, or on-site storage room. Depending on the application, we offer screw conveyors in lengths of 1.5, 2.0, 2.5, 3.0, and 4.0 meters. Since the reliability of its pellet boilers is paramount for ATMOS, the screw conveyors are only available as straight-running systems.

equipment & Characteristics

• It has a large combustion chamber
• Pellet boiler made of high-quality 6 mm boiler steel
• Pellet burner can be mounted on the right or left as needed.
• The P-series offers a very compact, space-saving design.
• easily accessible exhaust gas heat exchanger
• very user-friendly and quick boiler cleaning
• The P-series can be expanded with automatic ash removal.
• equipped with the ATMOS A25 or A45 pellet burner
• low power consumption
• Can be combined with ATMOS wood gasifiers
• very high efficiency > 90% and best emission values
• the ATMOS P Pellet boiler are eligible for BAFA funding
• unique price-performance ratio

Technical data

• Energy efficiency class A+
  
• Boiler class 3
  
• Nominal heat output 21 kW
  
• Efficiency 90.3%
  
• Traction requirement 18 Pa
  
• CO content 131 mg/m³
  
• Dust emission 9 mg/m³
  
• Prescribed fuel: pellets
  
• Exhaust gas temperature 147 °C
  
• Exhaust gas mass flow 0.015 kg/s
  
• Height 1207 mm
  
• Width 620 mm
  
• Depth 770 mm
  
• Flue pipe connection 150/152 mm
  
• Flue pipe outlet 807 mm
  
• Weight 386.0 kg

Scope of delivery

• Pellet boiler Atmos P21
• Assembly & User manual

Download

• User manual
• exploded view
• Pellet boiler catalog
• Declaration of Conformity Pellets
• Manufacturer's declaration

👉 Order commissioning now, along with the commissioning!
With the "Commissioning by ATMOS" service, you ensure that your boiler is optimally set up and that all technical requirements are met.

Further information on the process, requirements and services can be found in our article on [ATMOS commissioning].