Ferroli ECOTRONIC tech Instrucciones De Uso E Instalación página 138

ECOTRONIC tech EN
NB: If, on solar circulating pump activation, the ECOTRONIC tech controller does not have to set speed 5 (Max.
power, 100%), in the first second of operation the solar circulating pump will in any case work at speed 5 (Max.
power, 100%).
If the Solar circulating pump operation parameter (Installer parameter, default 1=Modulating) is set to 0 there
will be no modulation: the solar circulating pump will work on/off according to the normal solar circulating pump
activation/deactivation algorithms. To signal this mode, the symbol E will be lit up.
Solar Circulating Pump Deactivation
If the hot water tank sensor S2 temperature is less than the Tank maximum temperature parameter value (Installer
parameter, default 60°C) and the difference (positive) between the solar collector sensor S3 temperature and the solar
collector return sensor S4 temperature is less than or equal to the Deactivation temperature differential parameter
value (Installer parameter, default 4°C), the ECOTRONIC tech controller deactivates the solar circulating pump.
If the hot water tank sensor S2 temperature is greater than or equal to the Tank maximum temperature parameter
value (Installer parameter, default 60°C), the ECOTRONIC tech controller deactivates the solar circulating pump.
To signal this mode, the solar circulating pump symbol will go off.
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cod. 3540V011 - 03/2017 (Rev. 00)