Green Heating Technology
44
00214 00
1
2
5
4
3
Draining the system
When it is necessary to drain the system, use the draining tap
1
:
f
Unscrew the cap
3
;
f
connect a rubber pipe to the draining tap terminal
4
;
f
put the other end of the pipe in a suitable drain or sink;
f
open the draining tap by turning the nut
5
counterclockwise;
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 draining the liquid from the lowest point of
the system itself.
f
when everything is over, close taps (turning the nut
5
clockwise)
and air vents;
f
screw the cap
3
on the terminal
4
.
In the primary exchanger a certain quantity of
water of the heating system remains. If you
want to move the boiler, we advice you to close
with plugs the hydraulic inlet/outlet heating
system connections.
f
Drain the storage unit if necessary (storage tank
and/or primary coil) carrying out the operations described below.
Draining the storage unit
When it is necessary to drain DHW storage, use the draining tap
2
located at the bottom of the storage unit:
f
Close the hand valve installed on the boiler's cold water inlet connection;
f
connect a rubber pipe to the terminal of the storage draining tap
3
;
f
put the other end of the pipe in a suitable drain or sink;
f
open the draining tap by turning its hand nut counterclockwise;
f
when the draining is over, close the draining tap (turn it clockwise).
Alarms - boiler block
Following a malfunction, the boiler can lockout and show a particular signal,
or
on
the display, with an alarm code
"E…"
. In the following table, all the alarm signals are listed, their most
probable causes and the suggested solutions. Generally:
•
identifies those
alarms the user can restore
by pressing the
button. It normally
blinks
, but after 5 reset actions in 24 hours the action on the
button has no more effect.
To have 5 further reset possibilities, it's possible to switch off the electrical supply to the boiler for 30 seconds, by using the
purposed external switch, even if this work-around won't solve the problem and it will be necessary to call the Service Centre;
•
identifies those
alarms the user can not restore
, as they are generated by the diag-
nostic system when a component has been detected as faulty.
The user is allowed to switch off the electri
-
cal supply to the boiler for 30 seconds, by using the purposed external switch, but should the alarm happen again, it will be
necessary to call the Service Centre.
