Manual fired boiler for coal DEFRO Optima Komfort Eko 22

Kocioł zasypowy na węgiel DEFRO Optima Komfort Eko 22

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Product code: 59237

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Price: 48 878,79 Kč

Regular price: ~~58 745,45 Kč~~

48878.79

The lowest price during 30 days prior to the reduction: 48 878,79 Kč

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Description

The boiler DEFRO Optima Komfort Eko is a coal-fired hopper boiler. It has a body made of certified boiler steel sheet. Cooperation with an accumulation tank is required.

Primary air is supplied gravitationally from the outside using a hinged flap located in the furnace-ash pan doors, and is controlled using a draft gauge.

The boiler is adapted for installation in a closed system provided that safety devices are installed in accordance with the boiler DTR and has the ability to regulate secondary air supply.

The boilers meet the energy and emission requirements of class 5 and have an Ecodesign Certificate.

The manufacturer recommends installing the boiler in combination with an accumulation tank and by raising the temperature of the water returning to the boiler: in the form of a mixing valve or Laddomat. The minimum return temperature should be 55°C.

Advantages:

High thermal efficiency in the range of 90.0 to 90.9% thanks to increased heat recovery from flue gases;
Boiler adapted as standard for installation in a closed system provided that safety devices are installed in accordance with the boiler DTR;
Heat exchanger made of certified high-grade steel;
Ability to change the direction of door opening (applies to upper and middle doors);
Regulation of secondary air supply;
Large hopper chamber;
Adapted for thermostatic draft gauge installation;
Mechanical regulation of the combustion process using a knob in the ash pan door;
Boiler adapted for installation in a closed system provided that safety devices are installed in accordance with the boiler DTR;
3 years warranty on heat exchanger tightness, 2 years on other components and proper boiler operation - provided that installation is in accordance with the boiler DTR;

Specification/boiler type	Unit	Optima Komfort Eko 22	Optima Komfort Eko 24	Optima Komfort Eko 28	Optima Komfort Eko 35	Optima Komfort Eko 45
Fuel	[-]	hard coal - nut in granulation 20-50mm
Hopper chamber capacity	[kg]	31	33	35	35	45
Efficiency for nominal power	[%]	89.9	90.4	90.7	90.0	89.7
Energy efficiency class	[-]	B
Max. allowable working pressure	[bar]	1.5
Required flue gas draft	[mbar]	0.24	0.30	0.30	0.32	0.31
Maximum water supply temperature	[°C]	65/90
Boiler mass	[kg]	355	395	430	465	515
Boiler water capacity	[l]	81	96	107	119	132
Supply and return diameter	[in]	G 1½”
Flue gas outlet nipple diameter	[mm]	Ø 178		Ø 194		Ø 245
Minimum safe accumulation tank capacity	[l]	1200	1300	1500	1800	2600

Dimensions:

Technical data

Boiler class (303-5:2012)	5
Exhaust gas pipe diameter	178 mm
Weight	355 kg
Efficiency	89.9 %
Ecodesign	+
Height	1295 mm
Width	532 mm
Depth	893 mm
Outlet and inlet size	1 ½ G
Power output - coal / wood	22 kW
Producer's recommended minimum volume of accumulation tanks	1200 L

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