Solar module
Art. TAS001
5
Emptyng the system
Start-up
Washing the system
1. Open both the shut o valves 4 and 8 (Table1-page 3) turning their handles to 45° (see the operating specications
of these valves on page 11 of this data sheet).
2. Close the ow meter 7 (Table1-page 3), carrying the reference mark of the owmeter in horizontal position (see
operating specications on page 10).
3. Connect the drain cock 3 of the ow meter 7 (Table1-page 3) to a point of discharge using a rubber pipe.
4. Connect an external pump to the tap 3 of the instrument holder connection 2 (Table1-page 3) with a rubber pipe.
This pump will get the washing liquid (or the new heat-transfer uid) from an external container.
5. Start the external pump and open both taps 3, the washing uid will enter into the system while the one inside
will be discharged through the lower tap 3 of the ow meter 6 (Table1-page 3).
6. Open slightly and for a ⚠ short time ⚠ the ow meter 7 (Table1-page 3) to let the washing uid running also
through the system pump.
7. For a proper washing let the pump running for a ⚠ few minutes ⚠, then close the taps, switch o the pump
and disconnect the rubber pipes.
1. The system must be emptied if it has been lled with water only and will be exposed to a risk of freezing..
2. Open the shut o valves connected with the air vent valves (Pict.1).
3. Open both the shut o valves 4 and 8 (Table1-page 3) turning their handles to 45° (see the operating specications
of these valves on page 11 of this data sheet).
4. Open the drain cock of the owmeter 7 (Table1-page 3) or the tap located at the lowest point in the system.
1. Connect an external pump to the tap 3 of the instrument holder connection 2 (Table1-page 3) The pump is used
to increase the pressure in the system.
2. Operate the pump, open the tap 3 and increase the system pressure to the maximum operating value of the solar
thermal system. Read the pressure value on the manometer 2 (Table1-page 3), then close the tap 3 and stop the
pump.
3. Open the shut o valves 4 and 8 (Table1-page 3) by turning them counter-clockwise until they stop.
4. Fully open the owmeter 7 (Table1-page 3) carrying the reference mark of the owmeter in vertical position (see
operating specications on page 10). Check that the drain cock 3 is closed.
5. Start the circulator 5 (Table1-page 3).
6. Let the system running for a while, check the hydraulic seals of the system.
7. Open both the shut o valves 4 (Pict.1) and let drain any remaining air in the system, then close the valves.
8. Stop the circulator 5 (Table1-page 3)
9. Restore the pressure to the desired operating value as described above in step 2.
10. The system ow can be regulated by using the owmeter 7 (Table1-page 3), and reading the ow value on the
scale “ow indicator” (see operating specications on page 10). During this operation, the circulator 5 has to run
at its maximum power. To choose the ow rate suitable to the system follow the instructions of the solar panels
manufacturer.
11. After a few hours of operation, remove air from the solar system once again with the air vent valves A (Pict.1)
and the deaerator 9 (Table1-page 3). After all air has been removed, check once again the pressure in the system
with the manometer 2 (Table1-page 3) and, if necessary, restore the desired operating value as described above
in step
⚠ WARNING: It is necessary to comply with the warnings and instructions provided by the supplier of washing liquid.
