DE DIETRICH SOLNEO SGC 24 SOL - Manual (Page 10)

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SGC 24 SOL 15/10/2009 - 300017555-001-C
4. Operating instructions
4.5 Prolonged absence
4.5.1 Switching off the appliance
If the central heating system is not used for a long period, we
recommend switching the boiler off.
1. Switch the boiler off. 2. Cut the power supply to the boiler.
3. Close the gas valve.
4.5.2 Antifreeze protection

The boiler must be installed in a frost-free environment.
We recommend setting the boiler thermostat to a value off 10°C if
using a classic installation.
If the temperature of the central heating water in the boiler falls too
much, the integrated protection device switches itself on:
- If the water temperature is lower than 7°C, the circulating pump is
activated.
- If the water temperature is lower than 3°C, the boiler is activated.
- When the water temperature is above 10 °C, the boiler is switched
off and the circulation pump runs for another 15 minutes.