Installation And Safety Sets; Leak Test For Solar System; Replacing The Water With Solar Liquid - Dimplex Sst 25 Technische Information Für Montage Und Betrieb

3.4 Installation and safety sets

irmly screw the safety set supplied to the solar station.
Insert the assembled station, adjusted to the connection pipes, in the insulation
fixed to the wall. Close the station with the upper part of the insulation.

3.5 Leak test for solar system

• Fill the system with tap water (pressure approx 2 bar)
Check the connections and soldered joints for leaks.
•
Note: When filling ensure that all shut-off devices are open.

3.6 Replacing the water with solar liquid

• After the leak test has been passed, drain the water at the lowest point (FE tap reservoir).
Note:
When draining the water the gravity brake above the solar pump must be open (see item 2.4., rotary handle setting of the
ball valves 45°). Ensure the pipe system is completely drained. Otherwise when filling the system with solar liquid later,
there is a risk of reduced frost protection. When filling ensure that the gravity brakes, flow rate limiters and other shut-off
devices are open.
• The system is filled with the solar liquid using a pump. You can either use electric pumps or hand pumps which can
generate a minimum pressure of 2 bar.
• Completely vent the system. To do this, switch-off the system again for a while to remove the last air fractions form
the solar liquid. Check that all the air has been removed by manually switching the pump on and off several times. If
the manometer shows pressure fluctuations there is still air in the system and it has to be further vented.
Fig. 7
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