DWS – A hopper boiler intended for burning hard coal of the pea type, meeting the criteria of Class 5 and Ecodesign.
* Option additionally paid. Additional equipment must be ordered at the ordering stage.
** The minimum capacity of the accumulation tank should be calculated in accordance with the PN-EN 303-5:2012 standard.
Boiler specification/type | J.m. | 12 | 17 | 22 |
Fuel
|
coal
|
coal
|
coal
|
|
Min. safe capacity of the accumulation tank
|
l | 600 | 900 | 1200 |
Heating surface | m2 | 2,4 | 2,7 | 3,1 |
Area of heated rooms
|
m2 | to 150 | to 210 | to 275 |
Fuel tank capacity | kg | ~19 | ~23 | ~31 |
Optimum thermal efficiency
|
% | 90,1 | 89,8 | 91,4 |
Energy efficiency class
|
B | B | B | |
Max. permissible working pressure | bar | 1,5 | 1,5 | 1,5 |
Required exhaust gas draft
|
mbar | 19 | 21 | 23 |
Supply water temperature min/max. | °C | 65/90 | 65/90 | 65/90 |
Boiler weight
|
kg | ~379 | ~411 | ~464 |
Boiler water capacity | l | 80 | 87 | 98 |
Cross-section of the chimney
|
cmxcm | 14×14 | 14×14 | 16×16 |
Cross-section of the chimney
|
Ø mm | 160 | 160 | 180 |
Minimum height of the chimney | m | 5 | 5,5 | 6 |
Diameter of the supply/return connection | cal | 1 ½ ’’ | 1 ½ ’’ | 1 ½ ’’ |
Drain port diameter | cal | ½ ’’ | ½ ’’ | ½ ’’ |
Flue diameter | mm | 159 | 159 | 178 |
Height
|
mm | 1010 | 1010 | 1010 |
Width
|
mm | 645 | 695 | 745 |
Depth
|
mm | 1335 | 1335 | 1415 |
As standard, the boiler is prepared for installation of a set consisting of an exhaust fan and a controller.
Paid option according to the additional equipment price list.
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If you want to install a new heat source, it is worth paying attention to DEFRO devices, a Polish manufacturer with many years of experience in the heating industry. Our specialists will help you choose the right boiler and its power, and distributors and installers will take care of the assembly and commissioning, and all you need to do is enjoy the warmth and comfort. The distribution network of our products is divided into regions for which managers and salespeople are responsible.