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DMAN802000066-SY250 Idro 4/8 Buttons Manual
6.10
Plumbing Systems
Configuration
Setting the parameter
P26
it is possible to select the wished Plumbing system.
Block of Plant Pump for Room Thermostat/Probe:
This feature is available if water temperature is greater than
Th19
Thermostat
This feature is not available in plant 4; in plants 0 and 2 if there is a sanitary water demand the
Pump isn’t blocked and if it had previously been blocked, it is activated again
Electrical Wiring:
P1=
Pump P1 -> Pins 7 – 8;
P2=
Pump P2 or Valve -> Pins 22 – 23 – 24
For Output P2 Off is guaranteed a voltage between pins 22-23, for Output P2 On is guaranteed a
voltage between pins 22-24
S1=
Boiler Probe -> Pins 31 – 32;
S2=
Buffer Probe -> Pins 34-35,
FL=
Flow Switch -> Pins 34-35
CONFIGURATION 0
Setting the parameter
P26
= 0 it is chosen the configuration shown in Fig.1 and in Fig.2
FL
P1
P2
FL
P1
P2
S1
S1
fig. 1
fig. 2
Heating Plant
The Pump is On if the water temperature is greater than
Th19
Thermostat. To avoid freezing, the Pump is
On if the water temperature is below the thermostat
Th18
. If the water temperature exceeds the value of
the
Th21
thermostat for safety reasons the Pump is always active.
Sanitary Water Plant
When there is a water demand for domestic use and the water temperature in the boiler exceeds the value
of
Th19
thermostat or the water temperature in the boiler exceeds the value of the
Th20
thermostat the
valve is active. If the water temperature exceeds the value of the
Th21
thermostat the valve switches to the
system.
Example
:
Th18
= 5 °C,
Th19
= 40 °C,
Th20
= 30 °C,
Th21
= 70 °C
Water Temperature
Flow Switch
Modality
Valve P2
Pump P1
T < 5°C
Plant (OFF)
ON
5°C ≤ T< 30°C
Plant (OFF)
OFF
30°C ≤ T< 40°C
Sanitary
(ON)
ON
40°C ≤ T< 70°C
Open
Winter
Plant (OFF)
ON
Summer
OFF
Close
Sanitary
(ON)
ON
T≥70°C
Plant (OFF)
ON
CONFIGURATION 1
Setting the parameter
P26
=1 it is chosen the configuration shown in Fig.3 and in Fig.4.
S1
FL
P1
P2
FL
P1
P2
S1
fig. 3
fig. 4
Heating Plant
The Pump is On if the water temperature is greater than
Th19
Thermostat. When there is a demand of
domestic water the Pump is blocked.
