Technical documentation
Technical documentation
STEM@ ed 06/01
10
EOLO MAIOR @
- Operating position
(domestic hot water)
Running the domestic hot water generates a flow
inside the valve that invests the d.h.w. valve (6).
This represents a constriction
(venturi pipe)
downstream of which the pressure of the water is
lower than upstream.
With a flow of at least 1.85 l/min and a dynamic water
pressure of 0.4 bar, the pressure difference between
the two points is such as to cause the movement of the
diaphragm (1).
The movement is conveyed to the rods (8-9) and plate
(2) which first of all cause shutter (3) to move and
then the d.h.w. microswitch (7) to close with
consequent powering of the pump and modulation
board.
In this condition, the return pipe (R) is closed, while
the opening is open towards the exchanger inside
which the water of the primary circuit circulates.
When the d.h.w. supply has terminated, the pressure
difference upstream and downstream of the d.h.w.
valve (6) is cancelled out, enabling the valve to return
to idle position.
