2 = Curve setting B
3 = Curve setting A + B
The turning off of the function happens
clicking on the button OFF (return of PAR
43 to the value 0) or automatically at the
end of the function.
The set of the mixed zone follows the deve-
lopment of the selected curve and reaches
a maximum of 55°C.
During the function all the other heating
demands are ignored (heating, sanitary,
antifreeze and chimney sweep).
During the functioning the display shows
the remaining days for the completion of
the function
(example mains digits -15 =
15 days lack to the end of the function).
The
diagram fig. 22/a reports the development
of the curve.
ATTENTION:
- Observe the relevant standards and
regulations of the floor manufacturer!
- Proper functioning is ensured only
when the plant is correctly installed
(hydraulic system, electrical instal-
lation, settings)! If not observed, the
floor might get damaged!
4.6
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 relati-
ve alarms and solutions are given below:
–
LOW WATER PRESSURE ANOMALY
ALARM 02 (fig. 23/1)
If the pressure detected by the transdu-
cer is lower than 0.5 bar, the boiler
stops and the display shows the alarm
ALL 02.
Bring the pressure back to normal by
means by acting on the loading knob
(whereas, in vers.
25 T – 35 T
, from
appropriate load connection external-
ly mounted by the installer) until the
pressure indicated by the transducer is
between 1 and 1.5 bars.
WHEN FILLING HAS BEEN COMPLE-
TED, CLOSE THE KNOB BY TURNING IT
CLOCKWISE.
If the load procedure has to be repe-
ated several times, it is advisable to
check that the seal
of the heating cir-
cuit is intact (check that there are no
leaks).
–
HIGH WATER PRESSURE ANOMALY
ALARM 03 (fig. 23/2)
If the pressure detected by the transdu-
cer is more than 2.8 bar, the boiler
stops and the display shows anomaly
ALL 03.
–
D.H.W. SENSOR ANOMALY ALARM 04
(fig. 23/3)
If the D.H.W. sensor (SS) is open or
112
APRE
OPEN
Fig. 23/2
Fig. 23/1
