Charging Boilers

KDR Plus 3

KDR Plus 3 boilers are based on KDR boilers and additionally equipped with electronic system controlling air blowing for the combustion purposes. Boilers are adapted for combustion of solid fuels, especially wood in form of chunks, and large combustion chamber allows several-hour operation of the equipment. Boilers are operating using forced draught and amount of air necessary for combustion process is controlled using electronic controlled based on PID algorithm maintaining boiler temperature on the same level. Use of multi-point method for supplying of air to the fuel combustion zone increases efficiency of boiler operation and ensured uniform and long-term combustion with stabilization of this process. Heat exchanger of boilers is made of certified boiler steel of thickness 6mm and insulated with mineral wool to limit heat losses

4 lata gwarancji na szczelność wymiennika ciepła, 2 lata na pozostałe elementy i sprawne działanie kotła. 4 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 6mm heat exchanger made of certified boiler steel /grade P265GH/ of 6 mm thickness
 elektroniczna regulacja kotła z obsługą dwóch pomp oraz algorytmem
electronic control of boiler: S3P controller servicing 2 pumps /central heating and hot utility water/ and PID algorithm maintaining constant boiler temperature; adjustable below the control panel;
sprawność high thermal efficiency reaching 82,2-83% thanks to increase heat recovery from flue gases
w wersji do układu zamkniętego jako KDR 2 NZ in version for closed system as KDR 3 NZ*
duża komora spalania Large combustion chamber
wielopunktowy system doprowadzania poiwetrza w strefę załadowanego paliwa multi-point air supply system to the fuel charging zone
szeroki zakres mocy wide range or power


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

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 12 15 20 25 30 35 40 50
Power range kW 3,6-12
4,5-15
6,0-20 7,5-25
9,0-30
10,5-35
12,0-40
15,0-50
Heating area m2 1,4
1,8
2,2
2,4
2,7 3,2 3,6 4,3
Area of heated
rooms*
m2 to 150
to
200
to
220
to
250
to
300
to
350
to 400 to 500
Single fuel charging kg ~18 ~24
~31 ~36
~58
~85
~85
~122
Optimum thermal efficiency %
~82,2-83   
Max. permissible operation
pressure
bar
1,5
Required flue gas draught Pa
22
24
26
28
30
31
32
34
Max. water supply temperature °C
65/85
Boiler weight**
kg
251
307
355
380
420
495
532
626
Boiler water tank capacity l 62
82
106
115
127
146
151 185
Chimney section cmxcm
14x14
14x14
14x14 16x16 17x17 18x18
19x19
21x21
Chimney section Ø mm
160
160
160
170
190
200
210
230
Minimum height of
chimney
m 6
6
7
8
8
8
9
9
Width mm 547 597 597 647 647 747 747 797
Depth mm
905
963
1080
1080
1088
1088
1088
1088
Height mm
1515 1569 1569 1569 1765
1765 1916 2067
Diameter of supply
and return Dn
mm G1 ½”
Flue size mm
159
178
194
244
Supply V/Hz
~230/50
Maximum power consumption W
44
165
Height to bottom
edge of flue
mm
1036
1086
1086
1068
1268
1268
1357
1458
Dimensions of charging chamber
and fuel charging hole
width 258 308
308
358
358
458
458
508
  depth
380
430
547
547
547
547
547
547
  height 230
230
230
230
371
424
424 547
  width x height

258

x188

308

x238

308

x238

358

x238

358

x288

458

x288

458

x288

508

x288

 

* Maximum area of heated rooms estimated for unit heat demand q=95 W/m2.

** 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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