5
2. Filling of the system
1. Determine and calculate the overall volume of the solar thermal circuit:
Total Volume = Drain Back reservoir Volume + Heat Exchanger Volume + All Collectors Volume +
+ Pipes Volume + Volume of the Connectors, Valves, Pump and Fittings
2. Connect lling Valve ( or pumping set), Leaking Valve, Safety Valve, circulating pump
The volume of the drain back reservoir must be at least 1,5 times bigger than
the volume of the rest components of the solar thermal circuit, otherwise the
system may not work properly!
• Collector volume is declared in the technical data of the UniPlate collectors
• Heat Exchanger volume is declared in the technical data of the UniQube hot water
tanks
• The volume of copper or corrugated stainless steel pipes can be read on page 7.
Filling Valve, pump and Safety Valve, are not part of this product and must be installed
on a „cold line“ of the solar thermal circuit, on a height lower than L, i.e. below the
lowest level of the drain back reservoir
!
!
!
3. Determine the Expansion Volume of the system, from this table:
4. Leave the Leaking Valve open, connect the lling pump to the Filling Vale and then start
slowly lling until the rst leak appears on the Leaking Valve
5. Drain previously determined Expansion Volume out of the system
6. Close the Leaking Valve
7. System is lled
Total Volume Expansion Volume
50 l 3 l
51 l ÷ 100 l 6 l
101 l ÷ 150 l 9 l
151 l ÷ 200 l 12 l
