KDR 3 A

Strona główna Offer ARCHIWUM Charging Boilers KDR 3 A

Discontinued equipment

Availability

Discontinued equipment

Boiler type

charging

Power range

12-50 kW

Controller

none

Fuels

straw briquette

Optional equipment

draught regulator, blowing set DEFRO OPTI, NZ version for closed system, igniter, room controller, levelling legs

Additional information

large furnace chamber

Please check availability of the boiler at our distributors.

DESCRIPTION

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 years of warranty for heat exchanger tightness, 2 years for the remaining components and efficient operation of boiler
	Heat exchanger made of certified high-grade boiler steel;
	high thermal efficiency reaching 82,2-83% thanks to increase heat recovery from flue gases
	in version for closed system as KDR 2 NZ*
	combustion process adjustment using draught regulator* or knob in ash-pan doors
	Large combustion chamber
	wide range or power
	factory adapted for installation of blowing set
	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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Charging Boilers

KDR 3 A

DESCRIPTION

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Defro R. Dziubeła spółka komandytowa

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