3.6
CARD FUNCTIONING
The electronic card has the following func-
tions:
– Antifreeze protection of the heating
and sanitary water circuits (ICE).
– Ignition and flame detection system.
– Control panel setting for the power for
boiler functioning.
– Anti-block for the pump which is fed for
a few seconds after 24 hours of inacti-
vity.
– Antifreeze protection for boilers with
an accumulation boiling unit.
– Chimney sweep function which can be
activated from the control panel.
– Management of 3 independent heating
circuit systems.
– Automatic regulation of the ignition
power and maximum heating.
Adjustments are managed automati-
cally by the electronic card to guaran-
tee maximum flexibility in use of the
system.
– Interface with the following electronic
systems: climatic regulator CR 53,
remote control CR 73, thermal regula-
tor RVS, connected to a management
card of a mixed zone ZONA MIX, card
solar INSOL and to board RS-485 for
managing up to 8 boilers in cascade or
implement a communication type
Modbus (slave RTU-RS485, Reference
Guide PI-MBUS-300 Rev. J). For configu-
ring the devices with the boiler board,
set the installer parameter
PAR 10.
– Anti-condensing function, body pre-heat
(symbol “+” before main digit) and anti-
inertia.
3.7
FUNCTIONING ANOMALIES
When there is a functioning anomaly, an
alarm appears on the display
and the blue
luminous bar becomes red.
Descriptions of the anomalies with relative
alarms and solutions are given below:
–
LOW WATER PRESSURE ANOMALY
ALARM 02 (fig. 15/1)
If the detected pressure is below 0.5
bar, the diesel fuel burner operation
blocks and ALL 02 appear s on t he
display.
Restore pressure by rotating the fill cock
anticlockwise until the indicated pressu-
92
0
4
1
3
2
bar
Fig. 15/1
OPEN
