Optima

New design and technically improved OPTIMA boilers refer back to the previous generation of OPTIMA boilers in terms of their construction. Vertical combustion channels increase flue gas circulation allowing for maximum usage of thermal energy and improving efficiency of the device. The boilers are adjusted for combustion of solid fuels such as coal, coal and fines mixture, wood, wood chips and sawdust. A big chamber allows for charging fuel enough for many hours of operation. The combustion process does not require electrical power supply - the boilers use natural air draught. The device has been adjusted for installation of the DEFRO blow-in set, which controls the combustion process electronically. All the technical solutions ensure high comfort of usage, long-term and failure-free operation and cost efficiency. Reduced number of welded joints decrease the risk of leakage. In order to facilitate boiler installation in the boiler room, the devices have been equipped with attachable and adjustable legs.

Fuel type

primary

substitute

wegiel-orzech

coal (nut type)

coal / fine coal

wood

edgings, shavings

Boiler’s advantages:

	3-year warranty for heat exchanger tightness, 2-year warranty for other elements and efficient 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 10 and 13 types);
	regulation of the combustion process by means of the draught regulator* or a handwheel located in the ash pan door;
	flue extension with flue gas draught regulation;
	adjustable legs facilitating levelling of the boiler;

Technical data
Specification/boiler type	Unit	10	13	15	18	20	24	30	40
Nominal output	kW	5-16	6-18	6-20	7-22	8-25	9-28	11-36	15-48
Heating surface	m²	1,4	1,6	1,8	2,0	2,2	2,5	3,2	4,3
Heated room surface	m²	up to 100	up to 130	up to 150	up to 180	up to 200	up to 240	up to 280	up to 360
Single fuel load	kg	~18	~21	~23	~26	~32	~43	~62	~68
Optimum heating efficiency	%	80,1-80,4	80,1-80,4	80,1-80,4	80,1-80,4	80,1-80,4	80,1-80,4	80,1-80,4	80,1-80,4
Max. work pressure allowed	bar	1,5	1,5	1,5	1,5	1,5	1,5	1,5	1,5
Required chimney flue	Pa	21	22	24	25	26	28	30	32
Water temp. on supply max	°C	90	90	90	90	90	90	90	90
Boiler weight	kg	241	254	276	301	326	360	439	519
Boiler water capacity	l	43	47	55	60	65	78	94	121
Chimney cross section	cm x cm ø mm	14x14 160	14x14 160	14x14 160	14x14 160	14x14 160	15x15 170	17x17 190	19x19 210
Minimum chimney height	m	6	6	6	7	7	7	8	8
Power supply	V/Hz	-	-	-	-	-	-	-	-
Power consumption	W	-	-	-	-	-	-	-	-
Width	mm	650	650	675	675	725	725	775	825
Depth	mm	976	976	1076	1076	1076	1116	1176	1266
Height*	mm	921	971	991	1051	1051	1121	1171	1231
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 1_1/2"	G 1_1/2"	G 1_1/2"
Flue pipe dimension	mm	ø178	ø178	ø178	ø178	ø178	ø178	ø178	ø178
Height to the lower end of flue pipe*	mm	503	550	570	633	633	701	751	811
*Boiler’s height can be additionally regulated by the use of the feet attached to it. The feet can regulate height by 28-40mm.




	A*	B	C	D*	E	F	G	H	I	J
10	233	503	Ø179	921	650**	448	225	640	111	976
13	233	550	Ø179	971	650**	448	225	640	111	976
15	233	570	Ø179	991	675	448	225	740	111	1086
18	233	633	Ø179	1051	675	448	225	740	111	1086
20	233	633	Ø179	1051	725	538	225	740	111	1086
24	233	701	Ø179	1121	725	538	225	780	111	1126
30	233	751	Ø179	1171	725	588	225	840	111	1176
40	233	811	Ø179	1231	825	638	225	930	111	1266

* In case of disclaimers of regulatory dimension increases from min. 28 to max. 40 mm. ** Boilers OPTIMA 10 and OPTIMA 13 do not have a movable grate.

The table below shows the dimensions of the opening for filling and combustion chamber. Due to the changing depth of the combustion chamber are the smallest dimension of / at the top of the chamber and / greatest / just above grille /.

	A (Width)	B (Depth)	C (Height)	D (Width x Height)
10	308	150-330	260	308x188
13	308	160-330	260	308x188
15	308	225-410	280	308x188
18	308	225-410	340	308x188
20	358	225-410	340	358x188
24	358	255-450	410	358x188
30	408	310-510	460	408x188
40	458	310-510	520	458x188

DEFRO Company reserves the right to change without notice the technical parameters, equipment and specifications of our products. Contained on this page to ensure the information is not in the meaning. 4. 3 and 4 of the Act of 27 July 2002 on the specific terms of consumer sales and amending the Civil Code (the "Act") and do not describe the purpose of a product. 4. 2 of the Act. This site does not constitute an offer within the meaning of. 1966 Civil Code.

heat exchanger made of 6mm thick certified boiler steel (P265GH) brought from T. Sendzimir Steel Mill - ArcelorMittal Group;