88
60T - 280T
COSMOGAS
18 - MAINTENANCE
Figure 18-11 - Command board
18.9 - How to move a control board
Boiler models from 140T to 280T are set up to be managed
by a control board (Burner 1 Master). All the devices are
connected to this board: room thermostat, external sensor,
pump commands, external safety devices, and all internal
safety devices: condensate level sensor, exhaust gases
differential pressure switch, etc.
If the Burner 1 control board has an error, the boiler stops
working. If the technician does not have the parts to replace the
board, he can temporarily replace it with the board from one
of the other burners present on the boiler, in order to restart it.
To do this, proceed as follows:
(refer to Figure 18-10 unless advised otherwise)
1. Turn off the general switch and disconnect the electric
power supply;
2. Follow the steps of section 18.2 to access the internal
components;
3. Disconnect connector “B” (the connector that comes from
the display) from connector “A” (the connector that comes
from “Burner 1 (Master)”);
4. Disconnect all the other connectors from Burner 1 (Master)’s
control board;
5. Remove the control board of Burner 1 (Master) from the
boiler;
6. Follow points 3 to 5 to remove the control board from the
burner located lowest down;
7. Fit the board in place of that of Burner 1 (Master);
A
020009.01.010_a
ON
OFF
SELECTOR
SWITCH S4
8. Restore all the connections to the new Burner 1 (Master)
board;
9. Move selector switch “S4” as shown in figure 18-11, from
the OFF position to the new ON position;
10. Take great care with the connectors of the board that’s
been removed. They must be isolated to avoid short circuits
and damage;
11. Isolate each of these connections electrically;
12. Replace the boiler casing;
13. Reconnect the electric power supply and turn on the
boiler’s general switch;
14. Access the forced menu, follow the steps of section 20 and
set all the parameters as shown in the “Burner 1 (Master)”
column. Parameter
3050
must be reduced by one unit
compared to the previous status, because the boiler now
has one Slave Burner fewer.
15. Interrupt the electric power supply;
16. Reconnect the boiler’s electric power supply. Now Burner
1’s new control board is controlling the boiler.
Содержание AGUADENS 210T
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