6 Installation
40
The quality of the CH water must comply with certain limit values, which
can be found in the Water quality instructions. The regulations and guide
lines in this manual must be observed at all times.
6.6.2
Filling the siphon
1. Fill the siphon with clean water.
Danger
The siphon must always be sufficiently filled with water. This pre
vents flue gases from entering the room.
6.6.3
Filling the installation
1. Disconnect the boiler from the power supply.
2. Fill the central heating system with clean tap water.
Important
The recommended water pressure is between 1.5 bar and 2 bar.
3. Check the water-side connections for tightness.
4. Power up the boiler.
Important
Top up the central heating system by at least 0.8 bar if the water
pressure drops too low.
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