9
20197230
GB
Technical description of the burner
4.8
Electrical control box
The control box is a control and supervision system for forced
draught burners, for intermittent operation (at least one controlled
shutdown every 24 hours).
Important notes
All interventions (assembly and installation operations,
assistance, etc.) must be carried out by qualified personnel.
Before modifying the wiring in the control box connection
area, fully disconnect the system from the power supply
(omnipolar separation).
Protection against electrocution from the control box and all
connected electric components is obtained with the correct
assembly.
Before any intervention (assembly and installation opera-
tions, assistance, etc.), ensure the wiring is in order and that
the parameters are correctly set, then make the safety
checks.
Falls and collisions can negatively affect the safety func-
tions. In this case, the control box must not be operated,
even if it displays no evident damage.
For safety and reliability, comply with the following instruc-
tions:
-
avoid conditions that can favour the development of conden-
sate and humidity. Otherwise, before switching on again,
make sure the control box is perfectly dry.
-
Static charges must be avoided since they can damage the
control box’s electronic components when touched.
Installation notes
•
Check the electrical wiring inside the boiler complies with the
national and local safety regulations.
•
Install switches, fuses, earth connection etc. in compliance
with local regulations.
•
Do not confuse the powered conductors with the neutral
ones.
•
Ensure that spliced wires cannot get into contact with neigh-
bouring terminals. Use adequate ferrules.
•
Arrange the H.V. ignition cables separately, as far as possi-
ble from the control box and the other cables.
•
When wiring the unit, make sure the 230V AC mains voltage
cables are run strictly separate from extra low-voltage cables,
to avoid the risk of electrocution.
NOTE:
The burners have been approved for intermittent operation.
This means that they must stop once every twenty four
hours to permit the electrical control box to check its effi-
ciency at start-up. The boiler thermostat of heat request nor-
mally ensures the stopping of the burner. If this is not the
case, it is necessary to apply a timer switch in series to the
thermostat of heat request that turns off the burner at least
once every 24 hours.
Technical data
Tab. E
WARNING
To avoid accidents, material or environmental
damage, observe the following instructions!
The control box is a safety device! Avoid opening
or modifying it, or forcing its operation. The Man-
ufacturer cannot assume any responsibility for
damage resulting from unauthorised work!
Mains voltage
230 VAC -15 %/+10 %
Mains frequency
50/60 Hz ±5 %
Built-in fuse
5A 250 V
Energy consumption during
the operation
75 VA
Energy consumption
1.5 VA
Protection level
IP40
Fig. 4
20182238
Summary of Contents for 3749251
Page 2: ...Original instructions...
