Stuv 21 Installation Instructions Manual page 6

Standards, certification and technical characteristics (continuation)
Other technical characteristics
Minimum draught needed to obtain the
rated calorific output
Weight-flow ratio of smokes
Average smoke temperature
at rated power
Minimum diameter of the duct for the
intake of outside combustion air
Optimum output range for usage
Range of wood consumption per hour
recommended at 12% humidity
Maximum limit for consumption
of wood per hour to avoid overheating
the system
Maximum length of logs
in vertical position
Maximum length of logs
in horizontal position
System mass
Minimum draught needed to obtain
the rated calorific output
Weight-flow ratio of smokes
Average smoke temperature
at rated power
Minimum diameter of the duct for
the intake of outside combustion air
Optimum output range for usage
Range of wood consumption per
hour recommended at 12% humidity
Maximum limit for consumption
of wood per hour to avoid
overheating the system
Maximum length of logs
in vertical position
Maximum length of logs
in horizontal position
System mass
Stûv 21 - installation [en] - 04-2013
6
SN 132150- ...
21/65CSF 21/65HSF
12 Pa 12 Pa
11,3 g/s g/s
298 °C 329 °C
100 cm 2 100 cm 2
5-12 kW 8-13 kW
1.5-3.5 kg 2.3-3.7 kg
5.2 kg/h 5.5 kg/h
33 cm 50 cm
33 cm 33 cm
155 kg 197 kg
21/75DF 21/85DF
12 Pa 12 Pa
16,4 g/s 17,2 g/s
344 °C 368°C
200 cm 200 cm
2 2
9-19 kW 11-21 kW
2,8-6,1 kg 3,3-6,3 kg
6,8 kg/h 8,3 kg/h
- cm - cm
50 cm 60 cm
236 kg 297 kg
21/75SF 21/85SF
12 Pa 12 Pa
g/s 10.3 g/s
283 °C 293°C
100 cm 2 100 cm 2
8-11 kW 8 - 14 kW
2.2-3.1 kg 2.3- 4 kg
4.6 kg/h 5.8 kg/h
50 cm 50 cm
50 cm 60 cm
182 kg 234 kg
21/95DF
12 Pa
20,9 g/s
375°C
200 cm
2
12-27 kW
3,6-8,0 kg
9,9 kg/h
- cm
70 cm
310 kg
21/95SF 21/105SF
12 Pa 12.4 Pa
g/s 12.6 g/s
304 °C 242°C
100 cm 2 100 cm 2
10-18 kW 7 - 19 kW
2.9-5.3 kg 1.9 - 5.1 kg
6.5 kg/h 6.4 kg/h
50 cm 33 cm
70 cm 80 cm
292 kg 224 kg