emmeti N CTA W Manual page 12

temperature measure. The device is factory set with the Offset to
0.0°C.
HYSt
' ': ROOM TEMPERATURE REGULATION HYSTERESIS
With this parameter it is possible to customize the room temperature
regulation modifing the hysteresis in the 0.1 .. 5.0 °C range. The
device is factory set with the hysteresis to 0.2°C.
tMIn
' ': MINIMUM OUTPUT ON TIME
This parameter allows to reduce the number of ON/OFF cycles of the
output. This function is useful in case the chronostat drives a pellet
stove which cannot be switched On and Off for a too short time.
Once the receiver's relay is switched On according to a heating
(or cooling) need of the room, it will not be switched Off until the
'minimum On time' is expired. The parameter can be set in 10 minutes
steps in the 0..90 minutes range.
The device is factory set with the 'minimum On time' to 0, i.e.
function disabled.
Entc
' ': EXTERNAL NTC SENSOR CONFIGURATION
The chronostat features an input for an optional external NTC sensor
as well as an internal sensor. The sensor can be used to read the room
temperature in case the chronostat must be installed in an unsuitable
position for room temperature measure. Alternatively the external
sensor can be configured for floor temperature reading, which can be
useful in an underfloor heating/cooling system. With the external floor
sensor the chronostat will be able to take into account a minimum
and a maximum floor temperature limit during the room temperature
regulation.
The parameter can be set with the following values:
'no':
No external sensor wired.
'rOOM': External sensor wired to read room temperature.
'FLOH': External sensor wired to read floor temperature, but it can
not be shown on the display.
'FLOS': External sensor wired to read floor temperature, it can be
shown on the display.
'LinF': Floor temperature lower limit.
'LSUP': Floor temperature upper limit.
In these parameters it is possibile to set a minimum or maximum floor
temperature limit . In case the external sensor is wired and configured
to read the floor temperature, the chronostat will give priority to the
limits within the floor temperature must stay when regulating the
room temperature.
In heating mode it will be possible to set a lower limit under which
the floor temperature must not fall in order not to feel a cold floor,
while it will be possible to set a upper limit beyond which the floor
temperature must not rise in order to guarantee the maximum
wellness.
The chronostat alerts when it is regulating to maintain the floor
temperature within the limits blinking the '
The floor temperature lower limit can be set in the 10..30 °C range,
while the upper limit can be set in the 35..50 °C range. The limits can
be disabled setting them under their minimum value pressing the '
arrow button until the value 'no' appears. The device is factory set
with limits disabled.
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' symbol on the display.
'
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