ENGLISH ITALIANOFRANÇAISDEUTSCH
LXTFF01M-IOM-1511
43
P09: In case of a black-out the thermostat
remembers its latest state and when the power returns, it restarts
with the same settings (on/off, heating/cooling, etc.). Anyway,
in some situations it is requested that the thermostat restarts
to a know state (i.e. always OFF or always ON). This can be
accomplished by setting parameter P09 to “2“ (always restart
from “ON “) or “3“ (always restart from “OFF“).
P10: Room temperature sensor selection.
This parameter sets whether the temperature sensor used for
regulation has to be the internal one in the thermostat or the
external one (optional).
P11: With this parameter a slight correction (offset) for the
acquired room temperature can be set. Actually it could happen
that in some installations, due to the sensor location (either
internal or external) the temperature readout is not accurate.
By changing the value of this parameter the display readout can
be corrected of the equivalent amount being this a value which is
actually added to the acquired temperature reading.
P12 and P13: These two parameters set the range of the setpoint
temperature when in heating mode. In details P12 is the lower
limit, it can be confi gured in the range 5.0°C .. 35.0°C. while
P13 is the upper limit, whose value can be confi gured starting
from the actual P12 value until 35.0°C. The maximum range is
then 5°C .. 35°C and it can be easily modifi ed according to the
installation needs.
P14 and P15: These two parameters set the range of the setpoint
temperature when in cooling mode with the same logic as those
in the former step. When the heating/cooling mode is changed,
the limits of the setpoint temperature are automatically modifi ed
in turn.
When the “neutral zone“ operation is selected, these two
parameters will not be used and only the P12 and P13 values will
be taken into account.
P16: This parameter defines an anti-freeze temperature (in °C),
that is a minimum temperature which is maintained in the room
even when the regulator is turned off.
Regulation according to this temperature will only take place
when the regulator is set in heating mode; the fan speed will be
limited to the lowest
one. Setting the value to 0.0 disables the anti-freeze function.
P17: This value defi nes the entity of a temperature reduction step
(in °C) used to perform the “Economy“ function.
The actual setpoint is therefore reduced (when in heating
mode) or raised (when in cooling mode) by this step, once the
“Economy“ function is made active.
Setting this parameter to 0.0 the “Economy“ function is always
disabled.
P18: This parameter sets the differential (in °C) used in the
regulation process when on-off loads are used.
P19: In case the controller is confi gured for a neutral zone
operation this parameter determines the neutral zone amplitude
in the range 0.0°C .. 11.0°C. This value has to be intended
centered across the setpoint temperature.
P20: This parameter allows to set a delay time (in seconds) from
the valve opening to the fan turn-on, in order to allow some time
for the heat exchanger to heat-up or cool-down.
P21: This parameter allows to set a delay time (in seconds) from
the valve closing to the fan turn-off, in order to allow some time
for the heat exchanger or electric heater to dissipate the residual
heat.
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