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DMAN802000066-SY250 Idro 4/8 Buttons Manual
If the water temperature exceeds the Pump Thermostat
Tt19
the Pump is switched On for a time
T12
. At
the end of this timer the Pump Thermostat is increased of parameter
d06
value; so the new Pump
Thermostat becomes
Th19*
=
Th19
+
d06
.
If water temperature is under
Th19*
, the Pump is switched Off until the water temperature reaches the
Th19*
thermostat’s value. Now the Pump is switched on for a time
T12
.
At the end of timer
T12
the Pump Thermostat
Th19*
is newly increased of parameter
d06
value. So the
new Pump Thermostat is
Th19**
=
Th19*
+
d06
.
The Pump thermostat increase continues until the (
Boiler Thermostat
–
d07
) value is reached.
When water temperature exceeds this value the Step mode ends and the Pump’s work can be set by
parameter
A23
:
A23
=0
Pump thermostat
Th19
value remains the last one
A23
=1
Pump thermostat
Th19
value returns to the set value. If water temperature goes
under
Th19
, Step cycle starts again.
6.10.2
Pump and Valve Anti-Lock Function
If Pump is off for the time
T42
it will switch on for the time
T41
. If Valve is off for the time
T42
it will
switch on for the time
T46
.
6.10.3
Sanitary Function
In the plumbing system in which the Flow Switch is present, if there is a domestic water demand the
Sanitary Function starts: the Boiler Thermostat becomes equal to
Th21
Thermostat’s value and the
combustion is controlled by this value. When there isn’t required, the Sanitary Function will stop at the end
of
T68
timer.
6.11
Sensor Pressure Selection
Setting the parameter
P20
it is possible to select the Water Pressure sensor to use. If:
6.12
Supply Voltage Lack Management
In case of supply voltage lack, the system saves the most important functioning data. With the return of the
supply voltage, the system evaluates the saved data and:
If the lack is less than 60 s the system returns to the state in which it was previously
If the system was in a On state and lack of voltage is less than 50 min and greater than 60 s, the
system goes in Recover Ignition
In case of prolonged absence of Supply Voltage the systems goes in Block
with error message
Er15
Sensor Type A
0
0,5
1
1,5
2
2,5
3
0
500
1000
1500
2000
2500
3000
Water Pressure (mbar)
Output Voltage (Volt)
Sensor Type B
0
0,5
1
1,5
2
2,5
0
1000
2000
3000
4000
Water Pressure (mbar)
Output Voltage (Volt)
P20
=2 select type C sensor
P20
=0 select type A sensor
P20
=1 select type B sensor
Sensor Type C
0
0,5
1
1,5
2
2,5
3
3,5
0
500
1000
1500
2000
2500
3000
3500
4000
Water Pressure (mbar)
Output Volatge (Volt)
