Main dimensions:

     

PYROSTAR DUO - only boiler

18, 25 30, 50
A 1000 1200
B 530 530
C 820 1020
D 265 265
E 830 1000
F 1270 1440
G 1110 1270
H 65 65

 

 

 Boiler schema :

 

 

 

Key:

 

  1. front cover door
  2. removable cover of the frame
  3. handling of the heating flap
  4. heating flap
  5. feed door
  6. grate door
  7. lower door
  8. ashtray
  9. side parts from firebeton LACFIRE
  10. servomotor of secondary air Belimo
  11. servomotor of primary air Belimo
  12. grate inserts from firebeton LACFIRE
  13. socket of the combustion chamber from firebeton LACFIRE
  14. brick for secundary air from firebeton LACFIRE
  15. primary jet from firebeton LACFIRE
  16. thermal insulation
  17. combustion chamber from firebeton LACFIRE
  18. chimney 
  19. flue gases temperature probe
  20. lambda probe Bosch LSU 4.9
  21. exhaust fan EBM-PAPST
  22. propeller of the exhaust fan EBM-PAST
  23. cells of heating exchanger
  24. flue rectifier
  25. microprocessor regulator AK5000
     

Main technical datas: 

MODRATHERM PYROSTAR Duo
Typ   PYROSTAR Duo 18 PYROSTAR Duo 25 PYROSTAR Duo 30 PYROSTAR Duo 50
Datas for pellet burning          
Output range kW 6 - 18 6,7 - 25 7,1 - 30 12 - 40
Boiler operation and ignition - automatic
Emmisions boiler class (EN 303-5) - 5 5 5 5
Recommended fuel (EN 303-5) - Pellets C1 according to Ö Norm, d = 6 - 10 mm
Efficiency % 86,5 - 90,4

Chimney draft

mbar 6 - 18
Average flue gases temperature °C 75 - 140 73 - 165 78 - 170 87 - 187
Flowquantity of fuel kg/hour 1,39 - 4,26 1,56 - 5,6 1,56 - 6,68 2,72 - 8,83
Fuel consumption kg/hour 1,48 - 4,25 1,6  - 5,6 1,7 - 6,8 2,7 - 8,7
Elektricty consumption by pellet burning (boiler, burner, feeding)
by nominal output W 56 56 110 110
by minimal output W 25 25 50 50
by STAND BY W 5 5 5 5
Emmisions by nominal output
CO by 10% O2 mg/m3 344 198 208 418
OGC by 10% O2 mg/m3 7 20 19 3
Dust by 10% O2 mg/m3 11 12 13 15
CO by 13% O2 mg/m3 250 144 151 298
Dust by 13% O2 mg/m3 8 9 10 11
CO mg/MJ 162 93 98 194
OGC mg/MJ 3 9 9 1
Dust mg/MJ 5 6 6 7
Emmisions by minimal output
CO by 10% O2 mg/m3 192 113 119 153
OGC by 10% O2 mg/m3 11 9 9 6
Dust by 10% O2 mg/m3 38 21 22 37
CO by 13% O2 mg/m3 140 82 86 111
Dust by 13% O2 mg/m3 27 15 16 27
CO mg/MJ 91 52 55 72
OGC mg/MJ 5 4 4 3
Dust mg/MJ 18 10 11 17
Datas for wood burning
Nominal output kW 22 26 32/39 45
Boiler operation - manually
Recommended fuel (EN 303-5) - soft and hard wood, wood briquets, max. moisture 20%
Efficiency % 89 - 91 
Chimney draft mbar 20 - 25
Average flue gases temperature °C 136 - 160
Combustion space dm3 108 108 187 187
Elektricity consumption by wood burning (boiler)
by nominal output W 69 69 71 71
by STAND BY W 3 3 3 3
Generally
Water volume l 80 80 118 118
Temperature range of thermostat °C 65 - 85°C
Min. temperature of return water °C 65
Max. working pressure bar 2,5
Max. working pressure of security heat exchanger bar 6
Boilers dimensions (w x h x d) mm 530 x 1260 x 1000 530 x 1430 x 1200
Dimensions of ash tray (w x h x d) mm 380 x 70 x 520 380 x 70 x 720
Dimensions of loading hole (w x h) mm 390 x 490 390 x 510
Overall weight kg 425 425 566 581
Overall weight with burner set kg 511 511 656 671
Chimney connection mm 152
Power supply / frequency V/Hz 230/50
Elektricity cover IP 40