Expansion Vessel - Ariston CLAS X Training Manual

Training manual CLAS X
4.12

EXPANSION VESSEL.

The expansion vessel absorbs primary circuit water expansion when there is a boiler temperature raise.
It is constituted by two parts separated by a SBR rubber membrane. On one side nitrogen on the other water
of the primary circuit. The nitrogen chamber (which can be compressed) absorbs the water volume increased
because of temperature raise.
Technical features
Capacity
Maximum operating temperature
Nitrogen pressure
Maximum operating pressure
8 litri
90°C
1 bar
3,0bar
Maximum water content in the system
(litres)
WATER
Pag. 37 di 69
INER
gas