Italtherm 18 K, Инструкция

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Green Heating Technology
24
Heating system
f Connect the safety evacuation ducts of the boiler to an evacuation funnel. If safety valves are not
connected to an evacuation device, their intervention could flood the room. The manufacturer can -
not be held responsible for any damage arising from that situation.
Condense drain
Insert the flexible pipe of condense outlet inside the outlet funnel (or other inspectable connection de -
vice) properly installed for this purpose, or in the outlet funnel of the safety valve, in case of the above
mentioned outlet is able to receive the acid liquids of the condense as foreseen by the norms in force
in matter of condensing boilers.
The system must be made in order to avoid the condense freezing. Before the activation of the
appliance be sure that the condense can be evacuated correctly.
DHW storage tank filling
f
Adjust the pressure of the DHW expansion vessel (see "Boiler internal components" on page 55)
to the same pressure of the aqueduct;
f
open one of the hot water taps in the DHW system;
f
gradually open the hand valve installed on the cold water inlet of the storage unit;
f
when only water flows out of the tap, close it.
Heating system filling and pressuring
Once all system connections have been carried out, and after having filled the DHW storage tank, pro -
ceed with system filling. This operation should be made with care, respecting the following steps:
During this operation, the boiler should NOT be electrically supplied.
If the boiler is supplied, an automatic system filling cycle will start. If
the system is empty, this operation will be incorrectly performed and it
will cause, uselessly, many boiler blocks.
f
Open the radiators venting devices;
f Check that the plug of the automatic air vent, incorporated in the boiler
circulator, is unscrewed: if not, unscrew it and leave it unscrewed, even
afterwards, for normal operation;
f
If it's required to fill the system with anti-freeze solution, do this operation,
then hermetically close the connection or the valve used to put the solution
in, to allow the pressurization.
f
Slowly turn the screw 1 on the filling electrovalve, from position "C" to posi-
tion "A" (see picture);
f Check the correct functioning of automatic venting devices, eventually in -
stalled on the heating system and/or on the storage coil circuit;
f
Close the radiators venting devices as soon as water flows out of them;
f If the storage coil or the relevant circuit were equipped with manual venting
valves, use them to purge the residual air from them;