6.8
Filling the installation
6.8.1
Water quality and water treatment
In many cases, the boiler and central heating system can be filled with
normal tap water and water treatment will not be necessary.
The quality of the CH water must comply with certain limit values, which
can be found in the Water quality instructions. The guidelines in these
instructions must be followed at all times.
6.8.2
Filling the siphon
The siphon is supplied separately with the boiler as standard (including a
flexible plastic drain hose and a transparent extension hose for the
automatic air vent). Fit the siphon under the boiler.
1. Pull the retainer clip of the siphon backwards.
2. Carefully pull the siphon downwards.
3. Fill the siphon with water up to the mark.
4. Push the siphon firmly into the appropriate opening
underneath
the boiler.
5. Push the retainer clip of the siphon forwards.
6. Check whether the siphon is firmly fitted in the boiler.
Danger
The siphon must always be sufficiently filled with water. This
prevents flue gases from entering the room.
6.8.3
Filling the system
Important
In order to be able to read off the water pressure from the control
panel, the boiler must be switched on. If the water pressure is too
low, the boiler or the boiler pump will not start.
1. Fill the central heating system with clean tap water.
Important
The recommended water pressure is between 1.5 and 2 bar.
2. Check the water-side connections for tightness.
Fig.37
Filling the siphon
AD-0000231-03
6
3
2
4
5
1
6 Installation
40
7625116 - v.06 - 17102018
