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Altep DUO UNI PELLET 21 21 kW

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Energy source: solid fuel; Installation: floor; Type: single-circuit (heating only); Heating area (m²): 168; Long burning; Fuel bunker; Heat output (kW): 21; Coolant min. T (°C): 58; Coolant max. T (°C): 85; Efficiency (%): 91; Combustion chamber: open (atmospheric); Firebox size: Dimensions (mm): 1490x1300x1270
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Altep DUO UNI PELLET 21 21 kW
Energy source:solid fuel
Mount:floor, single-circuit
Boiler power:21 kW, area ~ 168 m²
Hopper volume:300 л
Combustion chamber:open, flue 160 mm
Torch self-cleaning burner. Large bunker. High efficiency. Fuel versatility. Optional remote control. Steel 6 mm.
FAQ: 10 frequently asked questions about heating boilersAnswers to common questions in the section "heating boilers"
All specifications
Specifications DUO UNI PELLET 21
Main
Energy sourcesolid fuel / pellets /
Installationfloor
Typesingle-circuit (heating only)
Heating area168 m²
Long burning
Additional equipment
Fuel bunker
Hopper capacity300 л
Technical specs
Heat output21 kW
Min. heat output5.25 kW
Power supply230 V
Power consumption80 W
Coolant min. T58 °С
Coolant max. T85 °С
Heating circuit max. pressure1.5 bar
Consumer specs
Circulation pump
Boiler specs
Efficiency91 %
Combustion chamberopen (atmospheric)
Flue diameter160 mm
Wall thickness6 mm
Connections
Central heating flow2"
Central heating return2"
Safety
Safety systemswater overheating
More specs
Dimensions (HxWxD)1490x1300x1270 mm
Weight440 kg
Added to E-Catalognovember 2018
FAQ: 10 frequently asked questions about heating boilersAnswers to common questions in the section "heating boilers"
Information in model description is for reference purposes.
Before buying always check characteristics and configuration of product with online store manager
Catalog Altep 2024 - new products, best sales and most actual models Altep.

Automatic efficiency

The Altep DUO UNI PELLET 21 boiler is a fully automatic heating device that can adapt to the conditions of residential buildings and industrial buildings of approximately 168 m². This boiler is capable of operating in heat maintenance mode with power modulation at 25% of the nominal, while providing a high efficiency of 91%. It is equipped with a 300 liter hopper with automatic pellet supply, which provides up to 60 hours of continuous burning and efficient heating without user intervention.

The flare-type burner installed in this boiler is highly economical, since it burns only the required amount of fuel. It is capable of automatically regulating itself based on data received from temperature sensors inside the heat exchanger, and can independently extinguish and rekindle. This burner also cleans automatically and does not require regular maintenance. When using high-quality pellets, virtually no ash is generated.

The manufacturer has provided the possibility of manual maintenance and loading of the boiler if it is necessary to use firewood, briquettes or coal for heating. The multi-channel air supply system optimizes the combustion process, ensuring maximum heat release.

Reliability matters most

The Altep DUO UNI PELLET 21 boiler is made of 6 mm thick steel and is designed for long-term operation without leaks or leaks. Double insulation of all technological hatches also ensures reliability and safety of operation. However, it is worth considering that the boiler weighs a significant 440 kg, so installation will require appropriate support. For more convenient control, you can install an optional Wi-Fi module for remote control.

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