Grant Solar GS222020X - Collector Field Cooling

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Special functions
6.6.6. - Collector fi eld cooling
This function controls an external coolig unit to cool down the collector.
Settings range: On, Off
6.6.6.1. - Tmax fi eld
If this temperature is exceeded at the reference sensor, the relay is switched on.
Settings range: 100 °C to 180 °C / Default: 120 °C
6.6.6.2. - Hys min
When the temperature falls below Tmax  eld +Hys min, the relay is switched off.
Settings range: -20 to -2°C / Default: -5
6.6.6.3. - Hys max
To protect the cooling unit itself from damage, the relay is switched off as soon as the temperature
at the reference sensor reaches Tmax  eld + Hys max
Settings range: 2 to 60 °C / Default: 20
6.6.6.4. - Field cooling sensor
Reference sensor of the collector  eld cooling function.
Settings range: S1-S8, VFS1-2, active storage, RC / Default: none
This function does not activate the solar pump to cool the collector. Therefore,
please refer to the collector protection.
Caution
Relay functions