Charging Boilers

Defro Classic

DEFRO CLASSIC boilers with manual charging are equipped with horizontal flue gas channels and are adapted for upper combustion of solid fuels. They are intended for heating of facilities with area up to 250 m2. Primary fuel - chestnut hard coal, secondary fuel: mix of chestnut coal and fine coal, seasoned wood and wooden wastes. Combustion process using natural draught does not require use of electric energy - boilers are operating using natural draught and temperature is mechanically controlled using knob on lifting flap on ash-pan doors or using draught controllers /additional equipment/.

gwarancja 4 4 years of warranty for heat exchanger tightness, 2 years for the remaining components and efficient operation of boiler
stal-6 heat exchanger made of certified boiler steel
sprawnosc-82.png high thermal efficiency reaching 82% thanks to increase heat recovery from flue gases
miarkownik-ciagu.png combustion process adjustment using draught regulator* or knob in ash-pan doors****;
powietrze-wtorne.png adjustment of secondary air inflow
nadmuch.png factory adapted for assembly of blowing set
ruszt-wodny.jpg water-cooled grate;
klamka.jpg adjustment of doors pressing force;
miarkownik.jpg adapted for operation with draught regulator;

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

Name of the boiler   DEFRO Classic
Specification/boiler type Unit 6 10 15 20 25
Power range kW 1,8-6 3,0-10 4,5-15 6,0-20 7,5-25
Heating area

m2

0,9 1,6 1,7 2,0 2,3

Area of heated rooms 1

m2

to 100 to 140 to 170 to 220 to 250
Single fuel charging kg ~18 ~21 ~21 ~30 ~41
Optimum thermal efficiency % ~81,3-83,9
Energy efficiency class - D D D D D

Max. permissible operation

pressure

bar 1,5
Required flue gas draught Pa 18 20 22 23 26
Max. temp. of water on supply °C 65/90

Boiler weight 2

kg 161 236 240 273 305
Boiler water tank capacity l 33 52 55 62 73
Chimney section cmxcm 14x14 14x14 14x14 14x14 16x16
Chimney section

Ø mm

160 160 160 160 160

Minimum chimney height

m

5,5

5,5

6

7

7

Width

mm 462 550 550 600 600

Depth

mm

765

930

930

940

1010

Height mm 1050 1260 1260 1310 1365

Diameter of supply and return Dn

mm

G1 ½”

Diameter of flue mm 127 159 159 178 178
Dimensions of charging chamber and charging hole

width

depth

height

width x height

258

253

250

258 x 188

258

368

264

258 x 188

258

368

264

258 x 188

308

368

315

308 x 328

308

438

354

308 x 238

Height to bottom edge of the flue

mm 795 965

965

1015

1065

 

1 Maximum area of heated rooms estimated for unit heat demand q=80 W/m².
2 Boiler weight depends on the equipment.
3 Width of boiler given with draught controller. Draught controller is not equipment of the boiler.
We would like to inform the DEFRO LOGISTIC company is the exclusive distributor of the
DEFRO Classic on the Polish market.

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