Position
C-NO
C-NC
6
Maintenance message stand
by
Maintenance message active
7
CH mode standby
CH mode active
8
DHW mode standby
DHW mode active
9
CH pump standby
CH pump active
6.7
Filling the installation
6.7.1
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 in
structions must be followed at all times.
6.7.2
Filling the siphon
Danger
The siphon must always be sufficiently filled with water. This pre
vents flue gases from entering the room.
1. Remove the siphon.
2. Fill the siphon up with water.
3. Fit the siphon.
Check whether the siphon is firmly fitted in the boiler.
6.7.3
Filling the system
Caution
Before filling, open the valves on every radiator in the installation.
Important
In order to be able to read off the water pressure from the boiler
display, the boiler must be switched on.
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.36
Filling the siphon
AD-0000086-01
1
3
2
6 Installation
123157 - v.12 - 07022018
41
