Charging Boilers

Defro BN

gwarancja_4_lata.jpg

4 years of warranty for heat exchanger tightness of heat exchanger;

2 years for the remaining components and efficient operation of the boiler;

stal.jpg Heat exchanger made of certified high-grade boiler steel;
miarkownik_ciagu.jpg Adapted for operation with draught regulator;
mechaniczny_ruszt.jpg Mechanical movable grate for removal of ash from water grates;
duza_komora.jpg Large furnace chamber;
pokretlo_miatkownika_ciagu.jpg Mechanical adjustment of combustion process using a knob in ash-pan doors;
wentylator_wyciagowy.jpg Factory adapted for installation of the blowing unit;
regulacja_powietrza.jpg Control of overfire air access;
Specification / boiler type J.m. 11 15 20 25 29 36 39
Power range kW 3,3-11 4,5-15 6,0-20 7,5-25 8,7-29 10,8-36 11,7-39
Heating area

m2

1,2 1,5 2,0 2,6 2,9 3,6 3,9

Area of heated rooms 1

m2

do 120 do 165 do 220 do 275 do 320 do 390 do 435

Single fuel charging

l ~16 ~25 ~36 ~48 ~59 ~76 ~87
Optimum thermal efficiency % ~81
Max. permissible work pressure bar 1,5
Required flue gas draught Pa 21 24 26 28 29 31 32
Water temperature on supply max. °C 65/85

Boiler weight 2

kg

194

242

284

312

347

403

467

Boiler water tank capacity l 36 50 60 72 82 87 111
Chimney section cmxcm 14x14 16x16 16x16 16x16 18x18 18x18 20x20
Chimney section

Ø mm

160 180 180 180 200 200 220

Minimum chimney height 

m

5,5

5,5

6

7

7

8

8

Supply and return socket diameter

cal

G1 ½”

Diameter of flue mm 127 178 178 178 178 178 178
Dimensions of charging chamber

Width

Depth

Height

258

253

236

258

268

251

308

368

251

308

438

288

358

468

288

458

468

288

458

537

288

 

1 Maximum area of heated rooms estimated for unit heat demand q=90 W/m2.

2 Boiler weight depends on its additional equipment.

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