ATMOS DC 30 SX upr

Product detailed description

The Atmos DC30SX UPR is a versatile solid fuel boiler designed for installation in residential and commercial heating systems where flexibility between wood and pellet fuel is required. It is commonly used in systems with storage tanks and hydronic heating circuits, where the installer must ensure proper integration with combustion air supply, flue systems and control modules. The boiler is suitable for medium to large properties with high heating demands, particularly in areas where wood and pellet availability is a priority. The design allows for efficient combustion of both fuel types, with a focus on reducing emissions and ensuring long-term reliability.

The boiler is constructed with a robust steel body, featuring a top chamber with a dedicated opening for the pellet burner and a lower combustion chamber with ceramic refractory bricks for optimal heat retention and combustion efficiency. The modular design allows for left or right opening configurations, which must be specified at the time of order. The boiler is delivered without the burner, requiring additional components such as a pellet burner and conveyor to be ordered separately.

Technical parameters

The technical parameters of the Atmos DC30SX UPR are essential for proper sizing and system integration. The 30 kW wood output and 7–24 kW pellet output indicate the boiler’s flexibility in adapting to different fuel sources and heating loads. The 95 dm³ hopper capacity supports extended operation with pellets, while the 530 mm maximum wood length ensures compatibility with standard firewood dimensions. The 24 Pa required chimney draft is a critical factor in flue system design to ensure stable combustion and emissions control.

Installation and connection

Installation of the Atmos DC30SX UPR requires careful planning to accommodate its 332 kg weight and 58 L water volume. The boiler must be mounted on a stable, non-combustible base with sufficient clearance for maintenance and air intake. The flue system must be sized to provide a minimum 24 Pa draft, and the chimney must be compatible with both wood and pellet combustion byproducts. The boiler is connected to the heating system via standard hydraulic circuits, with a maximum water pressure of 250 kPa. Installers should verify the correct orientation (left or right opening) during installation to avoid rework. Common installation mistakes include incorrect chimney sizing, insufficient air supply, and failure to specify the opening direction at the time of order.

Compatibility and accessories

The Atmos DC30SX UPR is compatible with a range of pellet burners, including the A25 model, and requires a screw conveyor (DA series) with a minimum length of 2 m for reliable fuel delivery. A pellet storage tank is also necessary for long-term operation. The boiler is delivered with two AD03 control modules for managing the exhaust fan and circulation pump, as well as three temperature sensors (TV, TS, TK) for monitoring and controlling the system. Installers must ensure that all accessories are ordered and installed according to the manufacturer’s specifications to maintain system efficiency and safety.

Technical background for designers

The Atmos DC30SX UPR operates on a dual-fuel principle, allowing it to switch between wood and pellet combustion. The boiler’s steel body, with a thickness of 3–8 mm, ensures structural integrity and heat resistance. The ceramic refractory bricks in the lower combustion chamber enhance heat retention and promote complete combustion, reducing emissions and improving efficiency. The modular design allows for the integration of a pellet burner in the upper chamber, which is controlled via the AD03 modules and temperature sensors. The system’s efficiency is further enhanced by the cooling loop that prevents overheating and potential damage to the boiler. Designers should consider the boiler’s A+ energy efficiency rating and Class 5 combustion classification when selecting it for systems with high environmental and performance standards.

Service and operation

Regular maintenance is essential to ensure the long-term performance of the Atmos DC30SX UPR. The ash removal system, assisted by the exhaust fan, allows for convenient and dust-free cleaning every 7–30 days, depending on usage. The automatic ignition system for pellets and the cooling loop reduce the risk of overheating and damage. No specific service intervals are provided in the brief, but installers should follow the manufacturer’s guidelines for routine checks and maintenance. Key checkpoints include verifying the correct operation of the temperature sensors, ensuring the flue system is free from blockages, and confirming that the fuel delivery system is functioning smoothly.

Frequently asked questions

Can the Atmos DC30SX UPR be connected to a large pellet storage tank?
Yes, the boiler can be connected to a large storage tank, allowing for fuel refills once every 7–14 days or even once per year, depending on the tank size and system demand.

Is it necessary to specify the opening direction when ordering?
Yes, the boiler is available in left or right opening configurations, and this must be specified in the order notes to ensure correct delivery and installation.

What type of pellets are recommended for use with this boiler?
High-quality wood pellets with a diameter of 6–8 mm are recommended for optimal performance and combustion efficiency.

Can the boiler operate automatically without manual intervention?
Yes, the boiler features automatic ignition, fuel feeding, and shutdown functions, allowing for unattended operation and improved convenience.