Boilers with feeder biomass

Defro Duo EkoPELL

DEFRO DUO EKO PELL boilers were designed based on the DEFRO DUO model. The most important difference is a fuel feeder and burner adapted for combustion of biomass in form of pellet from deciduous trees. The most important advantage of these boilers is an advanced automatics - controller servicing central heating and hot utility water pumps and two additional pumps and servicing of mixing valve and self-acting system: of ignition and fuel feeding and cleaning of burner. 
Additional chamber created by fixed water-cooled grate, with thickness of wall 8.8 mm, allows periodical combustion of the other fuels - e.g. wood chips - and start-up of boiler in emergency situations. Boilers are equipped with series of sensors monitoring its operation.

5 lata gwarancji na szczelność wymiennika ciepła, 2 lata na pozostałe elementy i sprawne działanie kotła 5 years of warranty for heat exchanger tightness, 2 years for the remaining components and efficient operation of boiler
wymiennik ciepła wykonany z atestowanej stali kotłowej /gat. P265GH/ o grubości 6-10mm z hut Arcelor Mittal Poland S.A. heat exchanger made of certified boiler steel /grade P265GH/ of 6-10 mm thickness from steel mills of Arcelor Mittal Poland S.A.
sterownik obsługujący 4 pompy /c.o., c.w.u., obiegowa, podłogowa/ z wyjściem na regulator pokojwy oraz obsługą zaworu mieszającego APC ADAPTIVE CONTROL ver.1 controller - servicing 4 pumps /central heating, hot utility water, circulation, floor/ control of mixing valve, possibility to connect GSM* module
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high thermal efficiency reaching 92% thanks to increased heat recovery from flue gases
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boiler adapted for installation in closed circuit in version DEFRO DUO EkoPell NZ
 duża komora paleniskowa z palnikiem pelletowym
large furnace chamber with pellet burner
układ samoczynnego zapłonu paliwa*
fuel self-ignition system

(*) - extra payable equipment, installed on Customer’s request

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DEFRO company reserves the right to introduce without any notice changes in technical parameters, equipment and specification of offered products. Information included on this page are not assurance within the meaning of art. 4 par 3 and 4 of the Act of 27 July 2002 on special conditions of consumer sales and change of Civil Code (hereinafter “Act”) and are not description of the product within the meaning of art. 4 par. 2 of the Act. This page is not an offer within the meaning of the art. 66 of the Civil Code.

Specification / boiler type Unit 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 area m2 1,9 2,4 2,8 3,2 4,4 5,8
Area of heated
rooms*
m2 to 200
to 260 to 300 to 370 to 580 to 750
Capacity of fuel container *** kg ~235 ~235 ~235 ~235 ~308 ~308
Optimum thermal efficiency % ~90,1-92,5
Max. permissible operation
pressure
bar 1,5
Required flue gas draught Pa 24 26 28 31 34 38
Water supply temperature
max.
°C 65/85
Boiler weight ****
kg 481
542
578
638
855
1002
Boiler water tank capacity l 84 103 117 126 176 210
Chimney section cmxcm 14x14 14x14 15x15 18x18 20x20 25x25
Chimney section Ø mm 160 160 170 200 230 280
Minimum chimney height m 7 7,5 8 9 10 11
Width mm 1540 1540 1590 1640 1640 1740
Depth mm 1128 1235 1235 1300 1523 1580
Height** mm 1659 1659 1659 1704 1708 1882
Diameter of supply and return Dn mm G1 ½” G2”
Flue size mm 159
159
178
194
194
245
Supply V/Hz
~230/50    
Maximum power consumption W
76/376 76/376 76/376 126/426 126/426 126/426
Height to bottom edge
of flue
mm
1258
1258
1252
1270
1275
1409
Dimensions of substitute combustion
chamber and charging hole
width 308
308
358 408
404
504
  depth 420
528
528
528
750
695
  height 210
210
210
210
210
409
  width x height
308 x 398
308 x 398
358 x 398 408 x 398
404 x 398
504 x 398

 

* Maximum area of heated rooms estimated for unit heat demand q=85 W/m2.
** Height of boiler can be additionally adjusted by means of provided levelling legs.
*** Fuel tank capacity for charging density 0.6 kg/dm3

****Boiler weight depends on the equipment.

 

DEFRO company reserves the right to introduce without any notice changes in technical parameters, equipment and specification of offered products. Information included on this page are not assurance within the meaning of art. 4 par 3 and 4 of the Act of 27 July 2002 on special conditions of consumer sales and change of Civil Code (hereinafter “Act”) and are not description of the product within the meaning of art. 4 par. 2 of the Act. This page is not an offer within the meaning of the art. 66 of the Civil Code.

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