Commissioning, inspection, maintenance
Opening the boiler
2.
Fig. 17
Filling the heating system
Fill water
!
Please note
Unsuitable fill water increases the level of
deposits and corrosion and may lead to appli-
ance damage.
■
Flush the heating system thoroughly before
filling.
■
Only use fill water of potable water quality.
Antifreeze suitable for heating systems can be
■
added to the fill water. The antifreeze manu-
facturer must verify its suitability.
■
Fill and top-up water with a water hardness in
excess of the following values must be soft-
ened, e.g. with a small softening system for
heating water.
26
3.
4.
1.
2x