PANEL HANDBOOK aH72 SK
V 6.0
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Fig. 13.
Diagram of recommended initial pressure in the circuit
As for the final flow rate of the installation, it is recommended to adjust it to 50 liters hour per panel.
Its adjustment will be done through the speed of the pump, throttling its shut-off valve until the desired
flow is achieved.
The use of a flow meter is essential in order to read the flow rate of the installation.
4.8.7
Best practices
Automatic filling from the grid is not recommended. There is a risk of uncontrolled introduction of
quicklime into the circuit, possible leaks in the system are not detected, the glycol is diluted without
any control and the concentration of the heat transfer fluid is lost, with the consequent risk of freezing
which will cause damage to the system. It is not good practice to lead the outlet of the safety valve to
a drain, as this makes it very difficult to control and quantify possible losses in the installation.
Furthermore, the regulations for thermal installations do not allow drainage at high temperatures. We
recommend that the safety valve be directed to a container that is not connected to the drainage
system, such as a bottle, for example.