Optima Komfort

Boilers of the OPTIMA KOMFORT series are characterised by horizontal and sloping combustion channels adapted for upper combustion of solid fuel. Electrical energy is not required for the boiler to operate - it uses natural airflow and the temperature is adjusted manually by means of a dumping door hand-wheel located in the ash pan door, or by means of a draught regulator (additional equipment). The boilers are adjusted for installation of an exhaust fan and electronic control panel, which significantly enhances the comfort of usage.
A big combustion chamber and the location of cleaning holes are some of solutions ensuring high comfort of usage.

Fuel type

primary

substitute

nut coal

coal/fine coal

wood

edgings, shavings

Boiler’s advantages:

	4-year warranty for heat exchanger tightness, 2-year warranty for other elements and eficient operation of the boiler;
	the exchanger has been made from certified boiler steel ( P256GH type) of thickness of 6 mm, delivered by the following steel plants: Arcelor Mittal Poland S.A, Kraków branch and U. S. Steel Košice s.r.o.;
	high thermal efficiency, up to 80%, thanks to increased heat recovery from flue gas - multi-draught system of vertical combustion channels;
	adjusted for installation of a blow-in set;
	mechanical movable grate for removing ash from water grate bars (not applicable for 8 type);
	regulation of the combustion process by means of the draught regulator* or a handwheel located in the ash pan door;
	big combustion chamber;
	wide range of power;

Technical data
Specification/boiler type	Unit	8	10	12	15	20	25	30
Nominal output	kW	3-9	4-11	5-15	6-17	7-22	9-30	10-33
Heating surface	m²	0,8	1,1	1,3	1,5	2,0	2,7	3,0
Heated room surface	m²	up to 70	up to 100	up to 120	up to 150	up to 200	up to 250	up to 300
Single fuel load	kg	~14	~18	~22	~27	~43	~55	~80
Optimum heating efficiency	%	~80	~80	~80	~80	~80	~80	~80
Max. work pressure allowed	bar	1,5	1,5	1,5	1,5	1,5	1,5	1,5
Required chimney flue	Pa	20	20	22	24	26	28	30
Water temp. on supply min/max	°C	90	90	90	90	90	90	90
Boiler weight	kg	155	190	205	225	285	300	355
Boiler water capacity	l	31	42	46	50	58	76	100
Chimney cross section	cm x cm ø mm	14x14 160	14x14 160	14x14 160	14x14 160	15x15 170	16x16 180	17x17 190
Minimum chimney height	m	5	5	6	6	6	7	7
Power supply	V/Hz	-	-	-	-	-	-	-
Power consumption	W	-	-	-	-	-	-	-
Width	mm	430	565	615	615	665	715	765
Depth	mm	810	990	990	1070	1100	1100	1100
Height	mm	980	1075	1075	1075	1145	1195	1295
Supply and return diameter Dn	mm	G 1_1/2"	G 1_1/2"	G 1_1/2"	G 1_1/2"	G 1_1/2"	G 2"	G 2"
Flue pipe dimension	mm	110x160	150x160	150x160	160x160	160x160	185x200	185x200




	A	B	C	D	E	F	G	H	I	J
8	265	790	980	430	-	440	260	810	110	160
10	265	835	1075	430	565	520	260	990	160	150
12	265	835	1075	480	615	520	260	990	160	150
15	265	835	1075	480	615	600	260	1070	160	150
20	265	905	1145	530	665	640	260	1110	160	160
25	265	930	1195	580	715	700	260	1170	185	200
30	265	1030	1295	630	765	700	260	1170	185	200


W tabeli poniżej podano wymiary otworu zasypowego oraz komory paleniskowej.

	A (Width)	B (Depth)	C (Height)	D (Width x Height)
8	258	275	280	258x188
10	258	355	255	258x188
12	308	355	255	308x188
15	308	430	255	308x188
20	358	475	315	358x188
25	358	530	360	358x188
30	408	530	405	408x188

DEFRO company reserves the right to make equipment, technological or specification changes without notice due to continuing engineering and technological advances. The content of this website does not constitute an assurance within the meaning of Article 4.3-4 of the Act of 27 August 2002 on specific terms and conditions of consumer sale and amendments to the Civil Code (“the Act”) neither is a product description within the meaning of Article 4.2 of the Act. This website and all the information it contains are issued for information purposes only and they do not constitute an offer within the meaning of article 66 of the Civil Code.