KSW Alfa

 

For those who prefer conventional solutions

The KSW Alfa boiler has been designed uses a proven design confirmed by many years of operation. The current design has been improved and attention has been paid to the smallest detail. This is the boiler with the most straightforward design in our product range, but at the same time, it is highly efficient and proven in heating small and medium-size buildings. It is designed mainly for coal firing, but it can also be successfully used to burn other types of fuel.

 




Operation of this kind of boiler does not require lessons

Its straightforward design translates in practice into straightforward operation. This boiler can be easily operated by anybody who has previous experience. To make fuel charging even more convenient we have widened the firing door 1 and positioned them slightly diagonally. For ash removal from the grate 2 we mounted a handy lever on the side of the boiler 3. It is enough to pull it down and consequently the all the ash will fall down into the ash pit 4.

Lower fuel consumption

We improved the conventional design by adding extended flue gas circulation 5. Thus we have succeeded in extending the working time with a single charge. Consequently this boiler with such a firing system will consume less fuel.

 

 

Long operational life of the boiler

Our boilers are made of superior quality steel. In combination with double welds it gives a long- lasting weld density and higher corrosion resistance. This model is covered by the following warranty terms: 2-year warranty forsubassemblies, 6-year warranty for heat exchanger integrity and 10-war - ranty for weld density.

Easy upgrading

The boiler was designed to enable subsequent easy upgrading – to add a controller and a fan. Additional subassemblies enhance slow burning and make the boiler firing-up processeasier thanks to the improvement of the chimney draft. When the user prefers conventional operation we suggest using a combustioncontroller. It maintains the set hot water temperature through the mechanical control of air inflow into the combustion chamber.

 

 

Technical data

PARAMETER TYPE
5 9 12 16 18 20 24
    Dimensions   D [mm] 127 159
  E [mm] 248 × 173  298 × 198 
  L [mm] 400 425  495 525 
  L1 [mm]  110
  L2 [mm] 200 220
  H [mm] 860  1080  1115   1200  1205 1265 
  H1 [mm] 695  915  910  990 975  1035 
  H2 [mm] 210  235 
  S [mm]  370 390   440
  S1 [mm]  65
    Basic fuel Hard coal 
    Heating power* [kW] 5 9 12 16  18 20 24
    Area of heated rooms** [m²] 50 90 120  150 180   200  240
    Cubature of heated rooms [m³] 150 225 300 375   450  500  600
    Efficiency [%] ~80
    Range of power regulation [%] ±2
    Capacity of combustion chamber [dm³] 20 27  33  35.5 45   53
    Water capacity of boiler [dm³] 20 28 38  52  55  70  75
    Heat exchanger material   P265GH [PN-EN 10028] steel; 6 mm
    Maximum working pressure [bar] 1.5
    Requested minimum chimney draught*** [Pa] 20 23 25 
    Water temperature min./max. [°C] 57/95 
    Power supply / Power [V/W] 230/85
    Boiler weight without water [kg] 129 148 181 202 214 248 253
    Water tubular diameter [cal] G 1 1/2

 

*Maximal water temperature in the boiler – 95°C;
**For rooms of the height of up to 2.5 m;  
***PN-EN 12809, PN-EN 303-5:2002;

 

 

 












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