Boiler Defro Firewood Duo 12 kW
It is an appliance designed for efficient combustion of chunk firewood and wood pellets, in accordance with the PN-EN 303-5:2021-09 standard.
The boiler is equipped with a burner with automatic cleaning as standard, as well as an APC K SLIM controller that allows operation of four pumps and one mixing valve. An additional advantage is the feed hopper, which can be positioned on any side - this makes it easier to fit the unit into small boiler rooms.
FIREWOOD DUO qualifies for subsidies from the Clean Air program as a wood gasification boiler.
- 5 Class: 12, 15, 19, 24 kW
- Ecodesign: 12, 15, 19, 24 kW
- Energy efficiency class: A+
- Controller: APC K SLIM
- Burner:
- Standard equipment: APC K Slim controller, ADAPTIVE CONTROL, leveling feet, igniter, weather control.
- Optional equipment - at extra charge: GSM module, Modul I-1, Modul I-1M, Internet LAN module, Internet WIFI module, Room controller ST-292 v3, Room controller ST-292 v2, DEFRO SPK Lux room controller, SPK Lux wireless controller, RS wireless communication kit
Boiler Power | kW | 12 | 15 | 19 | 24 |
Fuel | – | 6 mm diameter wood pellet | |||
ZUM List Identification Number | – | KZ-600507 | KZ-800506 | KZ-000505 | KZ-300504 |
Power Range | kW | 3.5-12.2 | 4.2-15.2 | 5.3-19.3 | 7.1-24.2 |
Fuel Tank Capacity 1 | kg | ~180 | ~180 | ~180 | ~180 |
Efficiency at Nominal Power | % | 91.9 | 92.1 | 92.4 | 92.0 |
Efficiency at Minimum Power | % | 92.9 | 93.0 | 92.9 | 92.8 |
Energy Efficiency Class | – | A+ | |||
Max. Allowable Operating Pressure | bar | 1.5 | |||
Required Flue Gas Draft | Pa | 15-25 | 18-25 | 20-21 | 22-24 |
Maximum Supply Water Temperature | °C | 70/80 | |||
Boiler Weight | kg | 383 | 406 | 436 | 501 |
Boiler Water Capacity | l | 71 | 78 | 84 | 99 |
Supply and Return Diameter | inches | G 1½” | |||
Flue Pipe Diameter | mm | 159 | 159 | 159 | 178 |
Supply | V/Hz | ~230/50 | |||