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12
Shutting down the system
12 Shutting down the system
NOTICE: Risk of system damage from
freezing.
B The heating system can freeze up if it is
disabled, e.g. shut down due to a fault.
B Protect the heating system from freezing
when temperatures below freezing are
expected. Drain the boiler water from the
heating system at its lowest point using
the drain valve. To do this, open the air
vent at the highest point in the system.
12.1 Shutting down the heating system
via the control panel
B Turn off the ON/OFF switch on the controls
(position "0").
This switches off the boiler and all its components (e.g.
burner).
B Close the main fuel shutoff valve.
1
Fig. 58 Turning the heating system off
1
ON/OFF switch
12.2 Shutting down the system in an
emergency
In an emergency disconnect electrical power
to the boiler and heating system by shutting
off the emergency shut-off switch on the
boiler or outside the boiler room, or
disengage the heating system circuit
breaker.
In other dangerous situations, immediately close the main
fuel shut-off valve.
B Shut off the fuel supply to the burner.
46
6 720 642 623-73.1O
Logano G615 - Subject to technical modifications
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