30
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 ‘floating’, 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 floating 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 flow
opens when it is supplied. On the contrary, if the NO valve is connected, the
water flow 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.
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-stratification’ 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 fixed 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.
ENGLISHESPAÑOL DEUTSCH ITALIANOFRANÇAIS
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