Green Heating Technology
40
Draining the heating system
When it is necessary to drain the heating system, proceed
as described here below:
f
Connect a rubber pipe to the draining tap terminal
1
;
f
put the other end of the pipe in a suitable drain or sink;
f
open the draining tap by turning the nut
2
counter
-
clockwise, using a suitable spanner;
f
when the pressure is COMPLETELY drained, it's possible
to open the radiators venting valves, to allow the air
inlet� The complete system drain is possible only drain-
ing the liquid from the lowest point of the system itself.
Remark:
The complete system draining can be achieved only by drain
-
ing the system from its lowest point.
f
when everything is over, close taps (turning the nut
2
clockwise) and
air vents�
In the primary exchanger a certain quantity of water of the heat
-
ing system remains. If you want to remove the boiler from the
wall, we advice you to close with plugs the hydraulic inlet/outlet
heating system connections.
Pump settings
The pump has a selector which allows to reduce the
speed, so as to reduce the noise produced by the too
rapid circulation of the liquids in too small heating sys
-
tems�
•
III
=
Maximum
Speed (Factory setting)
•
II
=
Medium
Speed
•
I = Minimum
Speed (use only if strictly neces
-
sary; test the heating system, verifying that no
overheating problems occur).
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