viadrus u22 firebrick top front 10 Flammensensor an external switching relay must

an external switching relay must be provided

Protects the heating system from sludge buildup and

Robust corrosion protection – effectively protects the hot water storage tank from corrosion

External thread (R): EN 10226-1

large apartment buildings

viadrus u22 firebrick top front 10 Flammensensor an external switching relay mustViadrus U22 firebrick top front Viadrus firebrick top front Compatible with the cast iron kettle: Viadrus U22 Why does fireclay deteriorate over time? Due to the large amount of minerals, fireclay also has a small disadvantage: it is relatively brittle. Due to constant exposure to high heat, it will eventually crack. These are the first signs of wear and tear on the material, but not yet a reason to replace it. The replacement of fireclay should only