viadrus u32 firebrick above ffhk no additional modifications are necessary

no additional modifications are necessary

with the flow temperature set between 80 and 90 °C

Thanks to its standard 1½" male threaded connection

For flexible expansion of your heating installation

viadrus u32 firebrick above ffhk no additional modifications are necessaryViadrus U32 firebrick on top Firebrick on top Compatible with the cast iron boiler: Viadrus U32 Why does fireclay deteriorate over time? Due to its high mineral content, fireclay also has a slight disadvantage: it is relatively brittle. Due to prolonged exposure to high heat, it will eventually develop cracks. These are initial signs of wear and tear on the material, but not yet a reason for replacement. Fireclay should only be replaced when parts of