Collector Maintenance; Warranty - Fondital HWF 20 Manual Del Usuario

k safety coefficient (usually equal to 1.1);
P power solar system maximum pressure, calculated as P
MAX
P safety valve activation pressure;
VS
P power solar system minimum pressure, equal to the loading pressure of the expansion tank gas side.
MIN
If there is the risk to reach higher temperatures than those the expansion tank membrane is designed for (100°C), the expansion tank must
be protected by an auxiliary tank without membrane (fig. 11).
The auxiliary tank can have a dimension equal to 1/3 of the expansion tank.
Additional tank
Expansion tank
fig. 11 - Expansion tank
5.

Collector maintenance

Once a year visually inspect the collector, i.e. the collector field, to check for any damage or dirt, as well as the sealing conditions.
For further information about system operation and maintenance read the relevant documentation and directives about start-up and
maintenance provided by the supplier.
6.

Warranty

The warranty shall apply only if the instructions and suggestions specified in this manual are respected and the laws and Standards in force
in the installation country are complied with.
The warranty applies only if the collectors are installed by skilled personnel.
32
* 0.9;
VS
EN