Baxi DN 25 Installation And Operating Instructions For The Specialised Installer page 13

Filling via the safety group and flow measuring and
regulating device
Illustr. 6.8 Filling via the safety group and flow
measuring and regulating device
1. Connect the flushing and filling station to the
solar plant (illustr. 6.8). The flow direction of the
circulation pump must be strictly observed
2. Position the ball valves of the solar station as
shown in illustr. 6.9 (angular position of the
thermometer handles in the supply: 0°, return: 90°)
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Illustr. 6.9 Ball valve position filling
3. Close the upper ball valve of the flow measuring
device by turning the adjustment screw into
horizontal position. Open the lateral ball valve of
the same component with a 90° turn to the left
(illustr. 6.10).
!
1.
Illustr. 6.10 Check valve and draining ball valve
4. Open the ball valve of the safety group with a 90°
turn to the left (vertical position, illustr. 6.11).
Illustr. 6.11 Draining ball valve safety group
5. Switch on the flushing and filling station and let it
run for at least 15 minutes.
6. Bleed the solar plant manually by closing the lateral
draining ball valve of the flow measuring and
regulating device during the flushing operation for
about 20 seconds and by opening it again all of a
sudden (illustr. 6.12). Repeat this procedure at
regular intervals.
Illustr. 6.12 Bleeding via the flow measuring and
regulating device
7. Switch off the flushing and filling station.
2.
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