BLUEHELIX PRIMA 24 C
30
EN
cod. 3541R820EN - Rev. 03 - 03/2020
Extraordinary maintenance and replacement of components
After replacing the gas valve, burner, electrode and electronic board, it is necessary to carry out
complete manual ca-
libration
(see “Complete manual calibration” on page 22). Then follow the instructions in par. “Checking the combustion
values” on page 22.
Gas valve
fig. 29- Gas valve replacement
•
Disconnect the power supply and turn off the gas
cock ahead of the valve.
•
Disconnect the electrical connector from the valve.
•
Undo the screws
“1”
.
•
Disconnect the gas supply pipe
“2”
.
•
Remove the gas valve
“3”
and gas baffle
“4”
.
•
Fit the new valve and baffle, carrying out the above
steps in reverse order.
•
The gas baffle “4” must comply with the direc-
tion indicated in fig. 29
.
Plate heat exchanger
A
Before carrying out the following instructions it is advisable to protect the room and the boiler’s electrical box
against accidental water spillage.
fig. 30- Plate-type exchanger replacement/maintenance
•
Isolate the boiler by operating the DHW inlet and system shut-off valves.
•
Open a tap to drain the domestic hot water.
•
Rotate the box on the panel
•
Drain the water in the boiler through the drain cock (see *** 'System draining' on page 9 ***)
•
Undo the screws
“2”
•
Move the plate heat exchanger back and slide it to the left.
•
Remove the heat exchanger as shown in the figure
•
When refitting the plate heat exchanger, make sure the arrows (indicating: HEATING) are pointing downwards.
1
2
3
4
4
4
2
2
1
3
