Pag. 41 / 44
DMAN802000066-SY250 Idro 4/8 Buttons Manual
CONFIGURATION 5
Setting the parameter
P26
=5 it is chosen the configuration shown in fig.8:
fig. 8
Heating Plant
The pump P1 is activated if the water temperature in the boiler exceeds the value of
Th19
thermostat.
To avoid freezing, the Pump is On if the water temperature is below the thermostat
Th18
. If water
temperature exceeds the
Th21
thermostat’s value for safety reasons the Pump is always active.
Sanitary Water Plant
When there is a sanitary water demand the system stops the Pump.
The Output Aux 1 switches on if the boiler temperature exceeded the thermostat
Th56
value.
Example
:
Th18
= 5 °C,
Th19
= 40 °C,
Th21
= 70 °C
Water Temperature
Modality
Flow Switch
Pump
T < 5°C
ON
5°C < T< 40°C
OFF
40°C < T< 70°C
Summer
OFF
Winter
Close
OFF
Winter
Open
ON
T>70°C
ON
CONFIGURATION 6
Setting the parameter
P26
=6 it is chosen the configuration shown in fig.9:
fig. 9
Heating Plant
Pump P2 is on above the
Th19
thermostat if there isn’t a sanitary water demand. To avoid the water
freezing, pump P2 is on if water temperature is under
Th18
thermostat or over
Th21
thermostat.
Sanitary Water Plant
The Pump P1 is on if the water temperature is greater than thermostat
Th20
. To avoid freezing, the Pump
P2 is on if the water temperature is below the thermostat
Th18
.
Example
:
Th18
= 5 °C,
Th19
= 40 °C,
Th20
= 30 °C,
Th21
= 70 °C
Temp. Probe S1
Flow Switch
Modality Pump P1
Pump P2
T < 5°C
ON
ON
5°C ≤ T< 30°C
OFF
OFF
30°C ≤ T< 40°C
ON
OFF
40°C ≤ T< 70°C
Close
ON
OFF
Open
Winter
ON
ON
Summer
ON
OFF
T ≥ 70°C
ON
ON
6.10.1
Pump in Step Functioning
If parameter
A15
=1 the Step mode functioning of Pump (Output P/V3, pin 7-8). is set.
