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4.4
Shutting down
WARNING: System damage from freezing.
B Ensure frost protection if the heating
system is to remain decommissioned for
longer periods (
instructions).
To take the heating system out of use:
B Interrupt the power supply to all ICM modules and all
boilers.
boiler installation
Start-up and shut-down | 15
6 720 643 835 (2011/06)
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