Pag. 8 / 44
DMAN802000066-SY250 Idro 4/8 Buttons Manual
2.3.2
Room Thermostat
If a contact is used, set
A19
=0. Setting the parameter Enables
A01
it is possible to:
se
A01
=
0
contact open
: the system goes in Extinguishing State
contact closed
: the system goes in Ignition State
Button ON/OFF on Control Panel has priority on this input
se
A01
=
1
contact closed
: the system goes in Run Mode State
contact open
: the system goes in Modulation State
se
A01
=
2
contact closed
: the system goes in Run Mode State
contact open
: the system goes in Standby State
se
A01
= 3
contact closed
: the system reactivates the Pump
contact open
: if the temperature of the boiler’s water exceeds the value of the
Th19
Thermostat the system blocks the Pump until the temperature reaches the
Th21
Thermostat.
This feature is available only if it is selected a plumbing plant different from 4.
If it is set the plant 0 or 2, if there is a sanitary water demand the Pump is not blocked by the
Room Thermostat and, if it was previously been blocked by the Thermostat, it is reactivated.
If
A01
=
1
,
2, 3
and the input is not used short circuit the relative pins.
2.4
Buffer Probe or Flow Switch
To the connections 34-35 is available a Buffer Probe or a Flow Switch input.
2.4.1
Buffer Probe
To use this input as a Probe set the parameter
P26
=2, 3, 4.
This probe is a NTC sensor; it can read from 0 to 110°C with a precision of 1 °C. If you don’t connect the
probe to the system you’ll read 0 °C. In case of short-circuit you’ll read 110°C.
2.4.2
Flow Switch
To use a Flow Switch input set the parameter
P26
=0, 1, 5, 6. Leave unconnected the pins if not used.
2.5
Analogue Inputs
2.5.1
Thermocouple (Exhaust Probe)
To the connections 25-26 is available the Exhaust Probe. With this probe it is possible to read the exhaust
temperature.
This probe is a Thermocouple K sensor. The sensor can read from 0 to 500°C with a precision of 1 °C. If you
don’t connect the probe to the system you’ll read 900 °C.
NOTE
: even if the sensor can read temperatures in the range 0 ÷ 500 °C the entire sensor wiring can work
only in the range 0 ÷ 500 °C.
TiEmme elettronica is not responsible of any damage or bad functioning of the probe due to a wrong use of
it (i.e. thermic and mechanical stresses to the probe).
2.5.2
Boiler Probe
To the connections 31-32 is available the Boiler Probe. With this probe it is possible to read the water
temperature of the boiler. This probe is an NTC 10K sensor and its range is 0 ÷ 110°C with a precision of 1
°C. If you don’t connect the probe to the system you’ll read 0 °C, in case of short-circuit you’ll read 110°C.
2.5.3
Pressure Sensor
To the connections 37-38-39 is available the Pressure Sensor to read the boiler’s pressure. It can read from
0 to 3000 mbar. If you don’t connect the probe to the system you’ll read 0 mbar.
To activate the alarms due over/under pressure of the boiler, set the parameter
A14
=1. In this case, set the
minimum and maximum pressure levels (
SP01
and
SP08
parameters).
