19
9.4.6 Hysteresis of the device
This menu, via
and
, lets you set the temperature range of the heating/air-condition-
ing system between "ON" and "OFF".
This value can also be changed via the submenu for ON/OFF operation.
The parameter cannot be changed if the thermostat is set as PID operation.
For example: Heating, with setpoint on 20.0°C,
: 0.5°C
20.5 (off), 19.9 (on)
9.5 Calibration setting
This menu lets you "calibrate" the temperature read by the thermostat.
Using
and
, you can add or subtract (at intervals of 0.1°) a fixed amount from the temperature
detected by the thermostat to make it equal, for example, to that of a sample thermometer.
CAUTION: For correct calibration it is recommended to wait until the thermostat has been on for
at least 1 hour in a room at constant temperature.
Tap
to confirm your choice.
9.6 Multi-function input setting
This menu is used to set the operating mode of the multi-function input.
Using
and
you can select the following options:
•
: the state of the multi-function input is ignored by the device.
•
(remote activation)
: the multi-function input (when enabled) automatically sets the “Tcomfort”
temperature as the setpoint.
In this context, the user can only change the temperature within a narrow range and cannot carry
out any further operations on the device; with the multi-function input disabled, the default mode is
"Antifreeze" (or OFF if on air-conditioning) and the user can manage the thermostat completely.
•
(remote nighttime reduction)
: the multi-function input (when enabled) forces a reduction in tem-
perature (which can be set via the submenu associated with that selection) with respect to “Tcomfort”.
In this context, the user can change the temperature within a narrow range and cannot carry out any
other operations on the thermostat; with the multi-function input disabled, the thermostat returns to the
previously set operating mode and the user can manage the thermostat completely.
•
(summer/winter switching)
: the multi-function input automatically switches the thermostat onto
air-conditioning mode (when on) or heating mode (when off).
On enabling this selection, the submenu described in 8.3 is no longer displayed.
This option is useful for centralized systems in which the air-conditioning or heating mode is performed
at the level of the entire building and impacts on many sub-environments.
Tap
to confirm your choice.
Summary of Contents for 2905
Page 1: ...Instructions manual Thermostat 02905 Installer Manual ...
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