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MCA 35
6
Switching off the boiler
6.1
Installation shutdown
6.2
Frost protection
15/06/12 - 300022160-001-01
CAUTION
Do not switch off the mains supply to the appliance. If the
central heating system is not used for a long period, we
recommend activating the HOLIDAYS mode (to ensure
the anti-grip of the heating pump).
When the heating water temperature in the boiler falls by too much,
the integrated protection system in the boiler starts up. This protection
functions as follows:
4 If the water temperature is lower than 7°C, the heating pump starts
up.
4 If the water temperature is lower than 4°C, the boiler starts up.
4 If the water temperature is higher than 10°C, the boiler shuts down
and the circulation pump continues to run for a short time.
CAUTION
The antifreeze protection does not function if the
4
appliance is switched off.
The integrated protection system only protects the
4
boiler, not the installation. To protect the installation,
set the appliance to HOLIDAYS mode.
The HOLIDAYS mode protects:
4 The installation if the outside temperature is lower than 3°C
(factory setting).
4 The room temperature if a remote control is connected and the
room temperature is lower than 6 °C (factory setting).
4 The domestic hot water tank if the tank temperature is lower
than 4 °C (the water is reheated to 10 °C).
To configure the holidays mode: ¼ Refer to the user instructions.
6. Switching off the boiler
93
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