Charging Boilers

KDR 3 A

KDR 3 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 natural draught and combustion process does not require use of electric energy. Amount of air necessary for combustion process is adjusted using lifting flap in ash-pan doors, which can be adjusted manually or using string of draught controller /additional equipment/. Boilers are factory adapted for installation of blowing set. 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 high-grade boiler steel;
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 2 NZ*
regulacja procesu spalania przy pomocy miarkownika ciągu* lub pokrętła w drzwiach popielnikowych combustion process adjustment using draught regulator* or knob in ash-pan doors
duża komora spalania Large combustion chamber
szeroki zakres mocy wide range or power
fabrycznie przystosowany do montażu zestawu nadmuchowego factory adapted for installation of blowing set
regulacja dopływu powietrza wtórnego adjustment of secondary air inflow

 

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

 

Name of the boiler   KDR 3 A
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 1

m2

to 150 to 200 to 220 to 250 to 300 to 350 to 400 to 500
Single fuel charging kg ~23 ~30 ~39 ~45 ~73 ~106 ~106 ~152
Optimum thermal efficiency % ~82,2-83,0
Energy efficiency class - D D D D D D D D

Max. permissible operation

pressure

bar 1,5
Required flue gas draught Pa 23 25 27 28 30 31 32 34
Max. temp. of water on supply °C 65/90

Boiler weight 2

kg 243 299 336 364 404 476 511 589
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 chimney height

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 1284 1350 1350 1350 1550 1550 1650 1800

Diameter of supply and return Dn

mm

G1 ½”

Diameter of flue mm 159 159 159 178 178 178 194 244

Height to bottom edge of the flue

mm

983

1033

1033

1014

1214

1214

1303

1405

Dimensions of charging chamber and charging hole

width

depth

height

width x height

258

380

230

258x188

308

430

230

308x238

308

547

230

308x238

358

547

230

358x238

358

547

371

358x288

458

547

424

458x288

458

547

424

458x288

508

547

547

508x288

1 Maximum area of heated rooms estimated for unit heat demand q=80W/m².
2 Boiler weight depends on the equipment.
3 Extra paid option, installed on the customer’s request.
4 Draught controller is not equipment of the boiler.

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