18 - EN
NLC
EN
NLC_HA/HE cod: 4037315_01
Before starting the loading, set the unit's master switch to OFF
Check that the system discharge tap is closed
Open all the drain valves of the system and of the related terminals
Open the cut-off devices of the system.
Start the filling by slowly opening the water system filling tap on the outside
of the appliance.
When water begins to flow from the drain valves of the terminals, close them
and continue loading up to pressure value required for the system.
Before starting to empty, set the unit's master switch to OFF
Check that the water system load/restore tap is closed
Open the drain tap outside the machine and all the drain valves of the system
and the corresponding terminals.
WARNING
During the winter, if the system is shut down, the water in the heat exchanger
could freeze, causing irreparable damage to the heat exchanger itself.
To avoid the risk of freezing, there are three possible solutions:
Completely drain the water from the appliance.
the operation with glycol water, with a glycol percentage chosen on the basis
of the minimum outside temperature envisaged.
Use of heaters.
In this case the heaters must always be powered for the entire winter period
(machine in STAND-BY).
Check the hydraulic seal of the joints.
It is recommended that this operation be repeated after the appliance has
been running for some hours and periodically check the system pressure. The
reintegration should be carried out with the machine off (pump OFF).
If the system uses glycol, this liquid should not be drained to the environment
because it is a pollutant.
It must be collected and, if possible, reused.
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