Action Clima CR13 Manual Del Usuario página 27

con!guration menu will result in an error message.
Con!guration parameters explanation
All parameters used in the installer con!guration are shown in Table 1 and
explained in the following.
P01: System type selection.
2 pipes system: when con!gured for a two-pipes system the controller
drives one valve only, wired at the 'heating' output terminal, both when
heating and when cooling, as the same valve is going to control either hot
or cool water #ow.
4 pipes system: when con!gured for a four-pipes system the controller
drives both valves outputs in order to activate either hot or cooling water
according to the actual requirements of the controlled environment.
P02: This parameter sets the way the controller switches from the cooling
mode (summer) to the heating mode (winter) and vice versa.
The switching can be either manual or automatic:
Manual: The user manually sets the heating or the cooling mode.
Automatic: The controller automatically selects the switching from the
heating to the cooling mode or vice-versa.
This automatic operation is different according to the system type set
with parameter P01.
If the system is a 4-pipes one, the controller operates with neutral zone thus
activating the heating or cooling according to the set-point temperature. In
case of a 2-pipes system the controller operates a changeover according
to the supply water temperature. When the supply water temperature is
low (that is below the threshold set with parameter P23) the controller
switches to cooling mode. On the opposite side, when this temperature is
high (that is above the threshold set with parameter P24) the controller
switches to heating mode. In case the supply temperature is neither too
low nor too high the operating mode is kept unchanged, but it still can be
changed manually. When the supply water sensor is not installed or is not
properly working then no automatic selection is performed and the manual
switching is only allowed.
Remote selection: In a building with several regulators all inputs (terminal
7 of each regulator) can be wired together and driven by a remote signal
coming from the furnace room. In case the furnace leaves the remote
signal '#oating', all regulators will be set into heating mode, meanwhile
when remote signal is connected to the mains 'Live' all regulators will be
set into cooling mode. In Fig. 5 and 6 is shown a wiring example for a
remote heating/cooling selection.
Reversed remote selection: same as before but with reversed logic:
terminal 7 #oating sets cooling mode, while terminal 7 connected to mains
'Live' sets heating mode.
P03 and P04: these parameters set which outputs are controlled. When
in heating mode parameter P03 is used, when in cooling mode P04 is
used instead. Each parameter sets whether temperature is to be regulated
through valves, fan, or both. When valves only is chosen, the fan will be
turned on even after temperature has reached the set-point; when fan only
is chosen the valve will always be opened even after temperature has
reached the set-point.
P05 and P06: These parameters tell the thermostat which valve is to be
connected: either NC or NO. If the NC valve is connected, the water #ow
opens when it is supplied. On the contrary, if the NO valve is connected, the
water #ow is normally opened and will be closed only when it is supplied.
P07: This parameter tells the thermostat which type of proportional action
is required at the proportional output of the fan.
Direct action: this means the thermostat gives an output signal of 0 V to
turn off the fan-coil motor, and a maximum 10V signal to turn it on.
Indirect action: this means the thermostat gives an output signal of 10V to
turn off the fan-coil motor, and a maximum 0 V signal to turn it on.
P08: This parameter sets the type of sensor connected to the supply
water temperature input at terminals 12 and 14. When set to value 0 or 1
a temperature sensor is expected for the acquisition of water temperature.
When 1 is set, the temperature value is also shown over the display,
according to the user choice. In case 0 is set, the information coming from
the temperature sensor is still used for the regulation purpose, even if its
value is never shown.
Value '2' means that the device connected to terminals 12 and 14 is a
bimetallic contact, which will act as cut-off thermostat only.
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