Instruction manual
6 
Technical parameters: 
Boiler type  
DPX15
DPX25
DPX30
DPX35
DPX40
DPX45
Boiler output  kW  15  25  30  35  40  45 
Surface of exchanger  m²  1,98  2,52  2,78  2,78  3,03  3,03 
Volume of fuel chamber  dm³  65  96  112  112  128  128 
Dimension of feeding opening  mm  235x445
235x445
235x445
235x445
235x445
235x445
Prescribed chimney draught  Pa  23  23  23  23  23  23 
Max. operation overpressure of water  kPa  250  250  250  250  250  250 
Pressure loss of water (∆T 10K)  kPa  1,9  2,3  4,4  4,4  6,6  6,6 
Pressure loss of water (∆T 20K)  kPa  0,6  0,7  1  1  1,8  1,8 
Boiler weight  kg  370  430  460  460  490  490 
Diameter of flue gas connection  mm  150  150  150  150  150  150 
Boiler height – „A“  mm  1240  1240  1240  1240  1240  1240 
Boiler width – „B“  mm  700  700  700  700  700  700 
Boiler depth – „C“  mm  840  1240  1340  1340  1440  1440 
Depth of chamber – „D“  mm  400  590  690  690  790  790 
Protection of electrical parts  IP  21  21  21  21  21  21 
Electric output  W  50  50  50  50  60  60 
Boiler efficiency  %  89  89  89  89  90  90 
Boiler class  3  3  3  3  3  3 
Flue gas temperature at nominal output 
°C  170  170  180  180  190  190 
Substantive flue gas overflow at 
nominal output 
kg/s  0,019  0,019  0,021  0,021  0,027  0,027 
Maximum noise level  dB  65  65  65  65  65  65 
Prescribed fuel 
Dry wood with heat value of 15-17 MJ/kg, water volume min. 
12% - max. 20% diameter 80-150 mm 
Average fuel consumption  Kg/h
3,9  6,5  7,8  9,1  10,4  11,75 
Consumption per season  1 kW = 1 m
3
Maximum length of wood logs  mm  350  550  650  650  750  750 
Burning time at nominal output  hod  3  3  3  3  3  3 
Volume of water in boiler  l  80  100  110  110  128  128 
Minimum volume of equalisation basin 
l  375  625  750  900  1000  1200 
Connection voltage  V/Hz
230/50 
Range of settings of heat. Water 
temperature 
°C  65-90 
Range of setting of room temperature 
(PROFI version) 
°C  10-27 
Power handling capacity of boiler 
regulator´ s contacts (PROFI version) 
V/A  230/2 
Acoustical pressure level A does not exceed 70dB (A). 
Immediate top value of acoustical pressure C does not exceed 63 Pa. 
Prescribed min. temperature of return water in operation is 65°C. 
Prescribed operation temperature of water in boiler is 80-90°C. Producer, the ATTACK, s.r.o. reserves right of 
technical changes of products without previous announcement! 










