20098208
12
GB
Technical description of the burner
4.12 Control box (LFL1.6...)
Warnings
➤
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.
➤
Do not press the reset button or the remote reset button of
the control box for more than 10 seconds because this will
damage the internal relay.
For the safety and reliability of the system, comply with the fol-
lowing instructions also:
–
avoid conditions that can favour the development of conden-
sate and humidity. Otherwise, before switching on again,
make sure that the entire control box is perfectly dry!
–
Static charges must be avoided since they can damage the
control box’s electronic components when touched.
Use
The control box is a control and supervision system of medium
and large capacity forced draft burners for intermittent operation
(at least one controlled shutdown every 24 hours).
Installation notes
•
Check the electric wiring inside the boiler complies with the
national and local safety 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 that AC 230 V mains voltage
cables are run strictly separate from extra low-voltage cables
to avoid risks of electrical shock hazard.
•
Technical data
Tab. E
Electrical wiring of the flame detector
It is important for signal transmission to be almost totally free
of any disturbances or loss:
•
always separate the detector cables from the other cables:
– The capacitive reactance of the line reduces the size of the
flame signal.
– Use a separate cable.
•
Respect the allowed cable lengths.
•
The ionisation probe is not protected against the risk of elec-
trocution. When connected to the electricity supply, the ioni-
sation probe must be protected against any accidental
contact.
•
Position the ignition electrode and the ionisation probe so
that the ignition spark cannot form an arc on the probe (risk
of electric overcharge).
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. Riello
S.p.A. cannot assume any responsibility for dam-
age resulting from unauthorised interventions!
Mains voltage
AC 230V -15% / +10%
Mains frequency
50 / 60 Hz ±6 %
Fuse (Internal)
T6.3H250V
Primary fuse (external)
max. 10 A
Weight
approx. 1 kg
Power absorption
approx. AC 3.5 VA
Protection level
IP40
Safety class
II
Input current at terminal 1
max. 5 A continuous (peaks of
20 A / 20 ms)
Load on the control terminal max. 4 A continuous (peaks of
20 A / 20 ms)
Environmental conditions
Operation
Climatic conditions
Mechanical conditions
Temperature range
Humidity
DIN EN 60721-3-1
Class 1K3
Class 1M2
-20...+60°C
< 95% RH
Fig. 6
S8414
