DE DIETRICH 220 SHL - Manual (Page 8)

2 Safety instructions and
recommendations
2.1 Safety instructions
CAUTION
Before any work, switch off the mains supply to the
appliance.
2.2 Recommendations
Have the installation regularly serviced to guarantee that it operates
correctly over time.
CAUTION
Never cut the power to the solar control system, even
during extended absences. The control system protects
the installation against overheating in summer when it is
running.
During extended absences, we recommend lowering the set point
temperature in the solar DHW calorifier to 50°C. When the user is
present, the set point must be set to 60°C.
CAUTION
Never drain the installation. Do not replace or add water
or solar fluid to the installation. These actions must be
carried out by a qualified technician.
CAUTION
Do not modify the control system parameters unless fully
conversant with them.
2. Safety instructions and recommendations 220 SHL
7 18/10/2012 - 300028214-001-02