28
USER INSTRUCTIONS
Speed V1 is activated when the temperature value is lower than the “setpoint -
valve
-
1heat
” value (in heating mode) or higher than the “se
valve
+
1cond
” value
(in cooling mode), and deactivated (sending of “fan OFF” value) when the temperature value
reaches the “setpoint -
valve
” value (in heating mode) or the “se
valve
” value
(in cooling mode). The first speed is also deactivated when a higher speed needs to be
activated.
Speed V2 is activated when the temperature value is lower than the “setpoint -
valve
-
1heat
-
2heat
” value (in heating mode) or higher than the “setpoint +
valve
+
1cond
+
2cond
” value (in cooling mode), and deactivated (sending of value V1) when
the temperature value reaches the “setpoint -
valve
-
1heat
” value (in heating mode) or
the “setpoint +
valve
+
1cond
” value (in cooling mode). The second speed is also
deactivated when a higher speed needs to be activated.
Speed V3 is activated when the temperature value is lower than the “setpoint -
valve
-
1heat
-
2heat
-
3heat
” value (in heating mode) or higher than the “se
valve
+
1cond
+
2cond
+
3cond
value (in cooling mode), and deactivated (sending of value
V2) when the temperature value reaches the “setpoint -
valve
-
1heat
-
2heat
” value
(in heating mode) or the “se
valve
+
1cond
+
2cond
” value (in cooling mode).
With regards the heating (cooling) solenoid valve, you can see that once the detected
temperature is lower (higher) than the “setpoint -
valve
” (“se
valve
”) value, the
thermostat sends the activation command to the solenoid valve that manages the heating
system; the solenoid valve is deactivated when the detected temperature reaches the fixed
setpoint value. In this way, the heating (cooling) of the fan coil can also be exploited for
irradiation, without any speed being activated.
To avoid continuous switchovers, the thermostat can wait up to 2 minutes before sending
the activation command to the actuator that controls the temperature adjustment system, or
to the actuator channels that command the fan coil speeds.
Both figures refer to the three-stage control of the fan coil, as the descriptions are complete.
For two-stage or single-stage control, the logic is the same, but not all the speeds are
controlled.
ATTENTION:
To control the fan coil speeds with ON/OFF commands in the absence of an
actuator with interlock, you must enable the notifications from the commanded actuator and
the link of the relative objects in the configuration of the ETS project. In this case (e.g. passing
from V1 to V2), the thermostat only sends a speed V2 activation command after receiving the
notification of the opening of the speed V1 command contact (transit from speed OFF). If there
is no notification, the thermostat repeats the contact opening command until it receives a
positive result. This condition is shown on the display by the flashing
symbol.
