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DMAN802000066-SY250 Idro 4/8 Buttons Manual
CONFIGURATION 3
Setting the parameter
P26
=3 it is chosen the configuration shown in fig.6:
S2
P1
P2
B
O
IL
E
R
S
AN
IT.
S1
fig. 6
Heating Plant
The pump P1 is activated above the
Th19
thermostat if the difference between the temperature read by
probes S1 and S2 is less than the
Th57
thermostat or water boiler has reached the desired temperature
(thermostat Puffer
Th58
). 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, the Pump is always on.
Sanitary Water Plant
Pump P2 has to heat the water inside the sanitary boiler. It will be on only if the water temperature in the
boiler exceeds the value of the thermostat
Th20
and the difference between the temperature read by
probes S1 and S2 is greater than the
Th57
thermostat. If water temperature exceeds the value of the
Th21
thermostat for safety reasons the Pump P2 is always on.
Example
:
Th18
= 5 °C,
Th19
= 65 °C,
Th20
= 50 °C,
Th21
= 70 °C,
Th57
= 5 °C,
Th58
= 55 °C
Temp. Probe S1 Temp. Probe S2 Modality Differential
Pump P2
Pump P1
T < 5°C
OFF
ON
5°C < T< 50°C
OFF
OFF
50°C < T< 65°C
T < 55°C
< 5°C
OFF
OFF
≥ 5°C
ON
OFF
T > 55°C
< 5°C
OFF
OFF
Winter
≥ 5°C
OFF
OFF
Summer
≥ 5°C
ON
OFF
65°C < T< 70°C
T < 55°C
< 5°C
OFF
OFF
≥ 5°C
ON
OFF
T > 55°C
Winter
OFF
ON
Summer
< 5°C
OFF
OFF
Summer
≥ 5°C
ON
OFF
T>70°C
OFF
ON
CONFIGURATION 4
Setting the parameter
P26
=4 it is chosen the configuration shown in fig.7:
S2
P1
P
U
FFE
R
S1
fig. 7
Loading Puffer
If the temperature in the boiler is greater than
Th19
thermostat, the system heats the water in the Puffer if
there is differential between the two probes (S1 temperature–S2 temperature>thermostat
Th57
). If water
temperature exceeds the value of the
Th21
thermostat for safety reasons the Pump is always active.
Example
:
Th19
= 40 °C,
Th21
= 70 °C,
Th57
= 5 °C
Probe S1 Temperature
Differential
Pump P1
T < 5°C
ON
T < 40°C
OFF
T ≥ 40°C
< 5°C
OFF
≥ 5°C
ON
T ≥ 70°C
ON
