Technical data
Appendix 1: Technical Data
Model
Astro 3MF
Astro 4MF
Fire regime Non continuous use
Nominal output 8 kW
Chimney connection (diameter) 150 mm
Weight +/- 140 kg
Recommended fuel Wood
Brown coal
briquettes
Anthracite
coal
Fuel property max. 33 cm 3" - 6" - 7"
12/22
20/30
Mass flow of flue gases 7.4 g/s 6.1 g/s 7.3 g/s
Flue gas temperature in measurement sec-
tion
297 ℃ 252 ℃ 261 ℃
Temperature at the appliance outlet 351 ℃ 454 ℃ 321 ℃
Minimum draught 12 Pa 12 Pa 12 Pa
CO emission (13%O
2
) 0,09 % 0,04 % 0,10 %
NOx emission (13%O
2
) 123 mg/Nm³ 151 mg/Nm³ 123 mg/Nm³
CnHm emission (13%O
2
) 71 mg/Nm³ 28 mg/Nm³ 90 mg/Nm³
Particulate emission 18 mg/Nm³ 17 mg/Nm³ 15 mg/Nm³
Efficiency 76,7 % 82,8 % 80,0 %
18
Subject to change because of technical improvements