English
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CHRONOS KEY Programmable Thermostat User Manual
In case of proportional regulation the parameters to set are the regulation band (
bnd
)
and the regulation time (
PEr
).
For further information about how to choose these values see the chapter
“Regulation types” on page 27.
Remember that the preset settings are suitable for the most part of the
situations: to change these settings only if it is really necessary.
Antifreeze temperature
(only for heating mode)
For the heating mode it is possible to set a safety temperature (antifreeze temperature
0ff
) to maintain also if the programmable
thermostat is switched off.
It is possible to choose a value between 1°C
and 10°C. It is also possible to deactivate the
antifreeze function pressing the key
until
the display shows
“
_-
.
-
”
. In this case, no safety
temperature is maintained, if the programmable
thermostat is switched off.
External supporting input settings
(only for battery powered models)
The programmable thermostat allows to connect a remote external temperature probe
to display (otherwise also to regulate) the measured temperature where the probe is
placed in or to connect a voltage free contact to the telephone activator connection in
order to switch on/off the remote programmable thermostat.
Field will display the writing
ESt
and the selected option will flash. Choose:
-
(
to connect an external temperature probe
-
DIG
to connect a telephone activator.
The characteristics of the probe are the following:
• Degree of protection: IP66
• Cable length: 2 meters (extensible up to 40 meters with a bipolar cable min section
1 mm
2
)
• Operating temperature: -40 °C ÷ +60 °C
Code
Model
Capacity
VN883500
X.Temp
-40 °C ÷ +60 °C
For further information about how to choose these values see the chapter
“Regulation types” on page 27.
Remember that the preset settings are suitable for the most part of the
situations: to change these settings only if it is really necessary.
