5.PARTS AND COMPONENTS
Fig.01 shows the major components:
a
Inlet connection
b
Outlet connection
c
Mains indicator
d
Pump running indicator
e
Fault indicator (dry running)
f
Reset button
g
Pressure gauge
6.OPERATION
The appliance activates the pump for about 15 seconds when it is powered.
The pump starts every time it senses a pressure drop within the system, for
example when a tap is opened.
Unlike traditional water system equipped with pressure switch and pressure
tank, it is the minimum flow that determines when the pump should stop,
rather than the cut-out pressure. The device delays the pump from stopping
for a further 7 – 15 seconds, thus reducing pump cycling in low flow
conditions.
7.INSTALLATION
7.a HYDRAULIC CONNECTIONS
Brio tank can be installed either in a vertical or a horizontal position, anywhere
between the pump outlet and the first outlet (tap). Care must be taken to
ensure that the direction of the arrow on the cover is in the same direction of
the flow of the fluid within the pipes (fig. 08). All hydraulic connections must be
properly tightened. An adequate pressure reducing unit must be fitted on the
delivery port of any pump exceeding 10 bar working pressure.
CAUTION: With the exception of submersible pumps, installing a non-
return valve between the pump outlet and the Brio tank inlet may
adversely affect pump operation. (The pump may fail to stop)
If it is necessary to install a non-return valve, this must be mounted at least 3
meters away from the device (fig. 07).
In the case of very high flow rates, the Brio Tank device can be installed in a
"by-pass" mode, in parallel with a non-return valve placed on the main outlet,
as shown in Fig. 06, to reduce pressure drop.
h
Supply terminals
i
Load terminals (pump)
j
Cut-in pressure adjustment
screw
k
Tank pre-charge valve
l
Pre-charge pressure gauge
(optional)
15