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Defro Duo EkoPell

Availability: Discontinued
Boiler type: With feeder
Available powers: 15, 20, 25, 35, 50, 75 kW
Energy efficiency class: A+
Controller: APC 2 ADAPTIVE CONTROL
Torch: pellet burner with automatic cleaning function as standard
Fuels - automatic furnace: wood pellets with a diameter of 6-8 mm
Fuels - replacement furnace: coal (walnut), lump wood
Standard equipment: ADAPTIVE CONTROL control, Internet module, leveling feet, “Firefighter” extinguishing system
Optional equipment - for an additional fee: GSM module, WIFI internet module, NZ version for a closed system, DEFRO SPK Lux room regulator, ST-61 V4 valve module, SPK Lux wireless regulator, wireless RS communication kit

APC 2 ADAPTIVE CONTROL controller supporting 6 pumps / central heating, domestic hot water, circulation, floor /. Control of two mixing valves; viewing and changing parameters of the main controller ONLINE via the built-in Internet module with an RJ-45 socket and via an additional GSM 5 module;

5-year warranty for the tightness of the heat exchanger, 2 years for other elements and efficient operation of the boiler

heat exchanger made of certified, high-quality steel;

APC ADAPTIVE CONTROL version 3 controller supporting 4 pumps /central heating, domestic hot water, circulation, floor/ Mixing valve control, ability to connect a GSM module*

high thermal efficiency up to 92% thanks to increased heat recovery from exhaust gases

NZ version adapted for installation in a closed system, reinforced structure, built-in cooling coil 5;

large combustion chamber with a pellet burner

automatic fuel ignition system

ceramic catalysts stabilizing the combustion process;

additional fireplace with replaceable cast iron grate;

ADAPTIVE CONTROL control - regulation of boiler operation based on air flow through the exchanger;

DEFRO DUO EKO PELL boilers were created based on the DEFRO DUO model. The main difference is the fuel feeder and the dump burner adapted to burn biomass in the form of pellets from deciduous trees. The biggest advantage of the boilers is advanced automation – a controller with central heating pump support. , domestic hot water and two additional pumps, as well as operation of the mixing valve and automatic system: ignition and fuel feeding and burner cleaning.
An additional chamber created by a fixed water-cooled grate, with a wall thickness of 8.8 mm, allows for periodic burning of other fuels – e.g. wood chips – and starting the boiler in emergency situations. Boilers have a number of sensors monitoring its operation.

Boiler name Defro Duo EkoPell
Boiler specification/type IU 15 20 25 35 50 75
Power range kW 4,5-15 6,0-20 7,5-25 10,5-35 15,0-50 22,5-75
Heating surface m2 1,9 2,4 2,8 3,2 4,4 5,8
Area of ​​heated rooms 1 m2 to 200 to 260 to 300 to 370 to 580 to 750
Fuel tank capacity 2 kg ~210 ~210 ~210 ~210 ~225 ~225
Optimum thermal efficiency % ~90,1-92,5
Energy efficiency class A+ A+ A+ A+ A+ A+
Max. permissible pressure

working

bar 1.5 – open system, 2.5 – closed system
Required exhaust gas draft Pa 24 26 28 31 34 38
Supply water temperature max. °C 65/85
Boiler weight 3 kg 481 542 578 638 855 1002
Boiler water capacity l 84 103 117 126 176 210
Cross-section of the chimney cmxcm 14×14 14×14 15×15 18×18 20×20 25×25
Cross-section of the chimney O mm 160 160 170 200 230 280
Minimum height of the chimney m 7 7,5 8 9 10 11
Width mm 1336 1336 1386 1436 1436 1536
Depth mm 1360 1360 1395 1435 1675 1689
Height 4 mm 1659 1659 1659 1704 1708 1882
Supply and return diameter Dn mm

G1 1”

G2”
Flue diameter mm 159 159 178 194 194 245
Power supply V/Hz

~230/50

Power consumption

(work/ignition)

W 76/376 76/376 76/376 126/426 126/426 126/426
Height to bottom edge
flue
mm 1258 1258 1252 1270 1275 1409
Dimensions of the replacement chamber

combustion and charging hole

width

depth

height

width x height

308

420

210

308 x 398

308

528

210

308 x 398

358

528

210

358 x 398

408

528

210

408 x 398

404

750

210

404 x 398

504

695

409

504 x 398

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