4 1112 Ø 180 210 Ø 180 970 560 575 590 1970 600 585 30 Ø 180 160 stûv 21 - 012022 - EN Technical data Fresh air intake Minimum 100 to 200cm2 (see table above) at the base of the stove. A register will shut off air supply when the stove is not in use. Warm air Depending on the model, up to eight duct openings, 145mm in diameter, distribute hot air. At least two should be connected. They can be used to supply neighbouring roo the heat ducts are long, it is a good idea to boost the effects of natural convection using a fan system. You can chose the position of the warm air outlet ducts : on top, at the back, or at the side. Installation The stûv 21 has been designed to insert into the masonry. We recommend to interrupt the chimney duct at ceiling level, and connect the stove with a prime-quality stainless steel flue, rigid if possible. Then warm air blowing ducts are installed and the chimney mantel is built around the fireplace. Two walls can be built on either side of the fireplace, so that only the front part needs to be closed. 200x200mm inlet or outlet mesh for Ø150mm Single position inlet or outlet mesh Dual position inlet or outlet mesh single face double face A unit mass (kg) B optimal range of use (kW) C rated-power efficiency (kW) D efficiency measured at rated power (%) E CO emissions (%) F fine particle emissions (mg/Nm3) G range of wood consumption / hour at 12% humidity (as an indication) (kg/h) H length of the wood logs in cm (horizontally) I length of the wood logs in cm (vertically) J minimum draught needed to reach calorific rated power (Pa) K weight-flow ratio of smokes (g/s) L mean smoke temperature at rated power (°C) M minimum insulation thickness (in cm) between potentially combustible materials and a the back part of the stove b the sides of the stove c the top part of the stove d the bottom part of the stove N minimum section of combustion air feed from an outer opening (cm²) O energy efficiency index (EEI) P energy efficiency class A B C D E F G H I J K L M(a) M(b) M(c) M(d) N O P stûv 21/65H high 197 8 – 13 12 78 0,06 13 2,3 - 3,7 50 33 12 9,6 329° 12 12 0 8 100 104 A stûv 21/75 182 8 – 11 10 80 0,07 26 2,2 - 3,1 50 50 12 7,8 283° 13 13 0 9 100 107 A+ stûv 21/85 234 8 – 14 13 78 0,08 22 2,3 - 4,0 50 50 12 10,3 293° 13 13 0 11 100 104 A stûv 21/95 292 10 – 18 15 76 0,09 18 2,9 - 5,3 50 60 12 12,8 304° 9 13 0 11 200 101 A stûv 21/105 224 7 – 19 19 84 0,09 15 1,9 - 5,1 80 33 12 12,6 242° 14 15 1 18 100 113 A+ stûv 21/125 305 11 – 23 24 79 0,09 14 6,4 100 50 12 16,7 340° 11 15 0 10 200 109 A+ stûv 21/135 286 11 – 21 19 78 0,08 27 5,6 100 33 12 19,4 280° 17 15 0 20 200 103 A stûv 21/75 DF 187 9 – 19 19 75 0,08 30 2,8 - 6,1 50 - 12 16,4 344° - 14 0 13 200 100 A stûv 21/85 DF 236 11 – 21 24 78 0,10 18 6,8 60 - 12 13,4 326° - 15 0 11 200 105 A stûv 21/95 DF 297 12 – 27 22 76 0,05 31 3,6 - 8,0 70 - 12 20,9 375° - 15 1 0 200 101 A stûv 21/125 DF 310 14 – 27 27 75 0,10 14 8,2 100 - 11 27 328° - 13 1 13 200 100 A conforms to the standard EN 13229 - ECODESIGN 2022 patent nr 1445541
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