Action Clima CR13 Manual Del Usuario página 28

When the parameter is set to '3' a window contact can be wired at
terminals 12 and 14: when this contact is closed the regulation is carried
out as usual, meanwhile when it is left open regulation is stopped.
Note: some limitations exist for the window contact: please read carefully
paragraph 'WARNING'.
If this parameter is set to '4' a 'reversed' logic is adopted for the window
contact: open means usual regulation, closed means regulation stopped.
P09: This parameter enables the 'de-strati!cation' function in the
environment. With this function the fan is turned on, at its lowest speed,
for about 2.5 minutes every 15 minutes. The function is only active when
the fan should be turned off according to the room temperature.
P10: In case of a black-out the controller remembers its last state and,
as soon as the power is applied again it restarts with the same settings
(on/off, heating/cooling, etc.).
Anyway, in some situations it is requested for the controller to restart
from a !xed state (i.e. always from off or from on).
This can be accomplished by setting parameter P10 to '2' (always restart
from 'on') or '3' (always restart from 'off').
P11: Room temperature sensor selection.
This parameter sets whether the temperature sensor used for regulation
has to be the one internal to the controller or the external one wired to the
terminals 13 and 14.
P12: 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 (in the
-5.0 .. +5.0°C range), being this a value which is actually added to the
acquired temperature value.
P13 and P14: These two parameters set the temperature limits for the
set-point knob range when in heating mode.
In details P13 is the lower limit, it can be con!gured in the range
5.0 .. 35.0°C while P14 is the upper limit, whose value can be con!gured
starting from the actual P13 value until 35.0°C.
The maximum range is then 5 .. 35°C and it can be easily modi!ed
according to the installation needs.
P15 and P16: These two parameters set the temperature limits for the
set-point knob range when in cooling mode according to the same logic as
those in the former step.
In case the heating/cooling settings are modi!ed, the temperature limits
for the set-point knob are automatically modi!ed in turn. When the 'neutral
zone' operation is selected, these two parameters will not be used and only
the P13 and P14 values will be taken into account.
P17: This parameter de!nes an anti-freeze temperature (in °C), that is
a minimum temperature which is maintained in the room even when the
regulator is turned off (with the on-off button).
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.
P18: This value de!nes the entity of a temperature reduction step (in °C)
used to perform the 'Economy' function. The actual set-point is therefore
reduced (when in heating mode) or raised (when in cooling mode) by this
step, once the 'Economy' function is made active. When this is set at 0.0
the 'Economy' function is actually disabled.
P19: This parameter de!nes the hysteresis in °C with which the ON/OFF
outputs are controlled according to the ambient temperature variations.
P20: In case the controller is con!gured for a neutral zone operation this
parameter determines the relevant amplitude in the range 1.0 .. 11.0°C.
This value has to be intended centered across the temperature set with
the knob. In case the controller is con!gured for a different operation this
parameter is not used.
P21: 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.
P22: 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
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