Resol FlowCon Sensor HE, Установка, Эксплуатация, Пусконаладка, Обслуживание, Страница: 7 / 36

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F lo w C o n S e n s o r / S e n s o r H E
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3.1.1 Flushing the system for initial
commissioning
Î Disconnect the expansion vessel from the solar thermal
system
Î Connect the pressure hose of a flushing and filling sta-
tion to the fill valve (3)
Î Connect the flushing hose of a flushing and filling station
to the drain valve (5) at the lowest point of the solar
thermal system
Î Close the ball valve (4)
Î Open the fill valve (3) and the drain valve (5)
Î 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 (fig. 4)
Î Flush the solar thermal system by means of the flushing
and filling station until the discharged solar fluid is free
of dirt particles.
During this process, the solar pump may run in “Max.” ma-
nual mode.
(Observe note in chap. 3!)
Î Switch off the filling pump
If the steps described in chapter 3.1,1 have not been carried
out yet, please do so before proceeding with the following
steps
Î Flush the solar thermal system using the flushing and
filling station for at least 15 minutes to remove all air
from the system.
During this process, the solar pump may run in “Max.” ma-
nual mode.
(Observe note in chap. 3!)
Î During flushing, bleed the solar thermal system several
times at the AirStopp until the discharged solar fluid is
free of air bubbles
Î Connect the expansion vessel to the solar thermal
system
Î Close the drain valve (5) of the flushing and filling unit
with the filling pump running and increase the system
pressure to approx. 5 bar
The system pressure can be read from the manometer
Î Close the fill valve (3) and switch off the pump of the
flushing and filling station as well as the solar pump
Î Check the manometer to see whether the system
pressure reduces (approx. 15 minutes) and eliminate
leaks where necessary
Î Set the operating pressure of the solar thermal system
(approx. 0.5 bar higher than the inlet pressure of the
expansion vessel) by opening the drain valve (5)
Î Close the drain valve (5) and open the ball valve (4)
Î Remove the hoses of the flushing and filling station and
screw the caps onto the fill and drain valves
Î Put the non-return valves in flow and return in operating
position by putting them in a vertical position (fig. 4)
using an open-ended spanner (wrench width 14)
If the controller is active during the flushing and / or filling
process, an implausible static pressure might be stored. If
the controller detects a stagnation directly after a flushing
and / or filling process, proceed as follows:
fig. 4
1 2
fig. 3
3.1.2 Bleeding and filling the solar system
(3) (5)
(4)
ball valve: 45°
non-return valve
not operating
flow passage in
both directions
ball valve: 90°
ball valve closed, no
flow passage
ball valve: 0°
non-return valve
in operation, flow
passage only in
flow direction
fig. 2