Ferroli ECOTRONIC Plus Manual page 76

ECOTRONIC Plus
Recooling:
Solar/Options/Recooling
selection: "Yes", "No"
factory setting: "No"
Combination with collector cooling function:
Frost protection:
Solar/Options/Frost prot.
selection: "Yes", "No"
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This function is used for keeping the system temperatures
and consequently the thermal load as low as possible.
If the temperatures of all stores of the system have excee-
ded the maximum temperature, the Tstmax for the first
store is temporarily overidden to reduce the surplus energy
via the pipework and the collector. Note Tstmax may be
exceeded so additional scald protection may be required.
This "circulation" is switched-off once the maximum store
temperature is underrun by 2 K.
2-collector systems: Both collector circuits are activated in a 2-collector system.
If the option "collector cooling" is activated in addition
to the recooling function, the behaviour of the recooling
function changes.
The objective is now to dissipate the energy supplied by
collector cooling.
If the temperature at the collector decreases by 5 K below
that of the store, the recooling function is activated and the
loading circuit is again operated to cool the store.
If the difference between collector and store decreases
below 3 K during that cooling period, the function is swit-
ched-off.
2-collector system:
In a 2-collector system, the collectors are operated separa-
tely using the switch-on conditions described above.
As soon as the temperature at the collector is 4 °C, the frost
protection function operates the loading circuit between the
collector and the 1
in the loading circuit against freezing or coagulation.
If the collector temperature exceeds 5 °C, this function is
switched-off.
If the 1
switched off or suppressed.
The pump output uses maximum pump speed.
In these systems, the circuit which fulfills the switch-on
2-collector system:
conditions described above is operated.
store in order to protect the medium
st
store in the system is blocked, this function is
st