Installation of Indoor Unit
Installation Manual
27
ENGLISH
Charging of the heating system
Thorough venting of the system has to be ensured. Otherwise, malfunctions in operation may
occur.
An expansion vessel of suitable dimensions must be fitted to the heating system. The expansion
vessel must be dimensioned in accordance with standard EN 12828.
For normal operation of the expansion vessel, it is necessary to perform proper adjustments of the
vessel’s working pressure. The settings have to be checked every 12 months.
Consider the maximal operational pressure of the vessel
The pressure settings of the expansion vessel and filling the hating system.
A - Filling the system.
B - Expansion vessel.
C - Ball valve with exhaust.
D - Air filling valve.
H - Height of the heating system (from expansion vessel to the highest heating body in the building).
P
sv
- Pressure of the safety valve.
Unsuitable charge of the expansion vessel with the pressure p0 is the reason for incorrect opera-
tion of the heating system.
The dimmensioning of the expansion vessel must be in accordance with standard EN 12828.
1,MFL69676201,영영 2017. 3. 8. 영영 3:07 Page 27
