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KRONAS UNIC New Long-Burning Boiler 17 kW

The KRONAS UNIC NEW solid fuel boiler can rightfully be classified as a long-burning boiler. With a large firebox and a multi-pass, four-shelf heat exchanger, as well as secondary air nozzles, the UNIC NEW series boilers offer the highest performance in their class. The firebox and heat exchanger are made of 6mm thick sheet metal, ensuring long-lasting operation. The NEW model has received a number of design changes, including:

Ergonomic design;
Sloping loading doors;
Round chimney for easy installation;
Possibility of using a mechanical draft regulator;
The presence of a mechanical thermometer.
The KRONAS UNIC NEW boiler's primary fuel is wood (of any type and moisture content), coal, and all types of fuel briquettes. Like other KRONAS boiler models, it can be equipped with various types of automation, expanding its range of applications.

Parameter	Units of measurement	Standard for the Kronas UNIC New boiler
Nominal boiler power	kW	17	22	27	35	50	62	75	98	125	150
Estimated heating area	m2	170	220	270	350	500	620	750	980	1250	1500
Fuel	—	firewood, anthracite, coal
Heat exchanger area	m2	2.9	3.3	3.8	4.2	5.4	6.2	7.1	9.3	10.2	11.3
Efficiency, not less than	%	83
One-time fuel loading	kg	44	53	62	84	113	142	180	261	342	410
Duration of combustion of a single fuel load	hour	8-24
Firebox dimensions
depth	mm	400	470	510	590	610	740	710	970	970	970
width	mm	380	380	400	400	450	450	550	550	700	770
volume	dm3	88	98	122	145	214	260	305	416	577	635
Water capacity of the boiler	l	92	110	132	165	198	230	290	350	390	420
Weight of the boiler without water	kg	340	375	410	455	650	700	810	970	1060	1150
Required flue gas draft	By	23-35
Flue gas temperature at the boiler outlet	° C	100-180
Recommended minimum water temperature	° C	58
Maximum water temperature	° C	90
Nominal (maximum working) water pressure	MPa	0.15-0.20
Test water pressure, no more	MPa	0.30
Power consumption, no more than	Tue	85	85	85	105	160	160	160	175	175	205
Overall dimensions of the boiler
IN	mm	680	680	700	725	775	775	900	900	1060	1150
B1	mm	580	580	600	600	650	650	750	750	900	970
H	mm	1610	1610	1640	1715	2065	2065	2090	2090	2175	2175
H1	mm	1490	1490	1510	1510	1850	1850	1850	1850	1935	1935
H2	mm	1235	1235	1265	1245	1575	1575	1560	1560	1645	1655
H3	mm	295	295	270	270	275	275	310	310	310	310
L	mm	885	955	995	1125	1170	1300	1275	1535	1535	1535
L1	mm	685	755	795	875	910	1040	1010	1270	1270	1270
Loading door size
height	mm	215	215	245	245	300	300	300	300	300	300
width	mm	335	335	355	355	360	360	460	460	460	460
Connecting (external) dimensions of the hog	mm	178	178	178	219	219	245	245	299	299	299
Diameter of the supply and return network water pipes (DN)	mm	50	50	50	50	50	50	65(FL)	65(FL)	80(FL)	80(FL)
Diameter of the safety valve pipes (DN)	mm	15	15	15	15	20	20	20	20	20	20
Recommended chimney parameters
cross-sectional area	cm2	256	256	256	380	380	490	490	706	706	706
inner diameter	mm	180	180	180	220	220	250	250	300	300	300
height (minimum permissible)	m	5	5	5	5	6	6	7	7	7	8

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KRONAS UNIC New Long-Burning Boiler 17 kW

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