5
en
3.2
Flushing the store for initial
commissioning
•
Connect the pressure hose of a flushing and filling
station to the fill ball valve.
•
Connect the flushing hose of a flushing and filling
station to the fill and drain valve at the lowest
point of the solar thermal system.
•
Close the ball valve.
•
Open the fill ball valve (5) and the fill and drain val-
ve at the lowest point of the solar thermal system.
•
Flush the solar thermal system by means of the
flushing and filling station until the discharged solar
fluid is free of dirt particles.
•
Switch off the filling pump.
•
Close the fill and drain valve at the lowest point of
the solar thermal system.
•
Remove the flushing hose from the fill and drain
valve.
•
Close the fill ball valve.
•
Connect the flushing hose to the drain ball valve.
3.3
Flushing and filling the solar thermal
system
•
Disconnect the expansion vessel from the solar
thermal system.
•
Connect the pressure hose of a flushing and filling
station to the fill ball valve (5) of the flushing and
filling unit.
•
Connect the flushing hose of a flushing and filling
station to the drain ball valve (3) of the flushing
and filling unit.
•
Close the ball valve (4) in the centre of the flushing
and filling unit.
•
Turn the ball valves in flow (1) and in return (2)
with an open-ended spanner (wrench width 14)
to a 45° position. The non-return valves in the ball
valves are now open.
•
Open the fill and drain ball valves (3 and 5).
•
Flush the solar thermal system using the flushing
and filling station for at least 15 minutes to remove
all air from the system.
•
During flushing, bleed the solar thermal system
several times at the Air separator until the dischar-
ged solar fluid is free of air bubbles.
•
Close the drain ball valve (3) of the flushing and fil-
ling unit with the filling pump running and increase
the system pressure to approx. 5 bar. The system
pressure can be read from the manometer.
•
Close the fill ball valve (5) and switch off the pump
of the flushing and filling station.
•
Check the manometer to see whether the system
pressure reduces and eliminate leaks where
necessary.
•
Reconnect the expansion vessel to the other
components of the solar thermal system.
3
4
5
1
2
If it is necessary to set the pressure, observe
the following step:
•
Set the operating pressure of the solar thermal
system by means of the flushing and filling station
(0.3-0.5 bar higher than the inlet pressure of the
expansion vessel).
•
If you have put the flushing and filling station into
operation to set the operating pressure, switch off
the filling pump.
•
Close the fill and drain ball valves and open the
ball valve.
•
Remove the hoses of the flushing and filling station
and screw the caps onto the fill and drain ball
valves.
•
Put the non-return valves in flow and return in
operating position by opening the ball valves with
an open-ended spanner (wrench width 14).
ball valve: 45°
non-return valve
not operating
flow-through in
both directions
ball valve: 90°
ball valve closed,
no flow-through
ball valve: 0°
non-return val-
ve in operation,
flow-through
only in flow
direction
•
Manually put the solar thermal pump in operation
at the highest RPM level (see controller manual)
and let it circulate for at least 15 minutes
•
During flushing, bleed the solar thermal system
several times at the Air separator, until the dischar-
ged solar fluid is free of air bubbles and increase,
if required, the system pressure to the operating
pressure.
Summary of Contents for FlowSol C
Page 7: ...7 en Notes...
