Optima

The OPTIMA series boilers are incredibly popular due to their versatility. The boilers are adjusted for both hard coal and firewood. The basic version features mechanical temperature regulation by means of a dumping door hand-wheel located in the ash pan door. The temperature can also be adjusted using 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.
The boilers have been equipped with a water grate increasing the heat reception area, as well as with a movable grate. In order to minimise heat loss, the multi-draught heat exchanger in the form of vertical convection channels has been insulated with mineral wool and covered by steel sheets.

Fuel type

primary

substitute

nut coal

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 /does not apply for models 10 and 13/;
	regulation of the combustion process by means of the draught regulator* or a handwheel located in the ash pan door;
	wide range of power
	big combustion chamber;

Technical data
Specification/boiler type	Unit	10	13	15	18	20	24	30	40
Nominal output	kW	5-14	5-16	6-19	7-21	8-24	9-27	10-33	14-46
Heating surface	m²	1,2	1,4	1,7	1,9	2,1	2,4	3,0	4,1
Heated room surface	m²	up to 80	up to 100	up to 120	up to 150	up to 180	up to 220	up to 260	up to 360
Single fuel load	kg	~16	~20	~22	~25	~30	~40	~60	~65
Optimum heating efficiency	%	~80	~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	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	190	205	235	260	285	310	365	420
Boiler water capacity	l	42	47	51	58	62	73	98	109
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	540	540	645	645	695	695	755	795
Depth	mm	1120	1120	1220	1220	1220	1260	1320	1410
Height	mm	790	840	860	920	920	990	1040	1100
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"	G 2"
Flue pipe dimension	mm	170x160	170x160	180x180	180x180	180x180	180x180	180x180	180x180




	A	B	C	D	E	F	G	H	I	J	K
10	265	540	790	480	-	650	261	1120	170	160	30
13	265	590	840	480	-	650	261	1120	170	160	30
15	265	600	860	480	645	750	261	1220	180	180	30
18	265	660	920	480	645	750	261	1220	180	180	30
20	265	660	920	530	695	750	261	1220	180	180	30
24	265	710	990	530	695	790	261	1260	200	180	30
30	270	760	1040	590	755	850	261	1320	200	180	30
40	270	820	1100	630	795	940	261	1410	200	200	30


W tabeli poniżej podano wymiary otworu zasypowego oraz komory paleniskowej. Ze względu na zmieniającą się głębokość komory paleniskowej podano wymiar najmniejszy /u góry komory/ oraz największy /tuż nad ruszetem/.

	A (Width)	B (Depth)	C (Height)	D (Width x Height)
10	308	165-325	255	308x188
13	308	165-325	280	308x188
15	308	225-400	250	308x188
18	308	225-400	310	308x188
20	358	225-400	310	358x188
24	358	260-440	380	358x188
30	418	320-505	430	358x188
40	458	310-510	490	358x188

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.

mechanical movable grate for removing ash from water grate bars