7
Closing and opening shut-off valves
The control lever opens
and
closes
the
ball
valve. The lever must be
positioned parallel with
the bevelled edges of
the closure cap, aligned
with the slots so as to
correctly guide the cap.
Closing and opening regulating valves
On the
float flow meter (113 series) and balancing valve
(112 series)
there is a slot for the complete opening or closing of
the valve. A slot on the obturator stem indicates the status of the
valve. When the control stem is turned clockwise 90° and the slot is
perpendicular to the valve axis, this indicates that the valve is
̀
fully
closed (A); when the stem is turned 90° anti-clockwise to the end
stop and the slot is parallel with the valve axis, this indicates that
the valve is
̀
fully open (B).
When the control lever is in the vertical position, the ball is open and
the medium is flowing (A). When the lever is in the horizontal
position the ball is closed: the seats ensure a tight seal and impede
the flow of medium (B).
5)
Connect main pipes.
It is advisable to insert a ball valve between the manifold and the
main pipe so that the geothermal circuits can be excluded
easily.
6)
When the manifold is fully installed, check that the insulations
are closed and insert the temperature gauges into the pockets
mounted previously. Tighten the screw on the pockets to keep
the temperature gauge in position.
A
B
A
B
A
B