Minimum distances for versions with heat shield:
1.
Combustible material
2.
Incombustible material, thickness 100mm
ASTRO 4 LEON
Minimum distances for versions without heat shield:
If the distance between the connecting tube and combustible materials is less than 300 mm the
connecting tube should be protected.
1.
Combustible material
2.
Incombustible material, thickness 100mm
22
Subject to change because of technical improvements