emmeti TAM-15 Manual De Instalacion Y Uso página 47

In case of a 2-pipes system or an "integrating electric heater" system,
the controller operates a changeover according to the delivery water
temperature.
When the delivery water temperature is low (that is below the threshold
set with parameter C01) the controller switches to cooling mode.
On the opposite side, when this temperature is high (that is above the
threshold set with parameter C02) the controller switches to heating
mode. In case the supply temperature is neither too low nor too high the
operating mode is kept unchanged, and can be manually changed.
When the delivery water sensor is not installed or it is not properly
working, no automatic selection is performed and only the manual
switching is allowed.
Remote selection: In a building with several regulators all inputs can be
wired together for a remote selection coming from the central heating
room. On C17, C18 and C19 parameters it is possible to choose the input
and the mode (normal or reversed) to be associated to the "remote heating/
cooling" selection.
In the wiring diagrams it is shown a wiring example for a remote heating/
cooling selection.
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, in this way you can choose different means of temperature
conditioning depending on the season.
Each parameter defines whether the thermostat must regulate the
temperature by acting on the valve or on the fan or on both.
If you choose to regulate only with the valve, the fan will be always on
even after temperature has reached the setpoint, or you can choose to
keep the fan always off.
If you choose to regulate only with the fan, the valve will be always open
even after temperature has reached the setpoint, or you can choose to
keep the valve always closed.
In systems with electric heater or heating pump these parameters cannot
inhibit the valve outputs because these outputs are driven according to the
specific system type.
P05: This parameter tells the thermostat which kind of fan motor need to
be driven: an EC motor on the 0-10V proportional output or a three-speeds
fan motor on the three relay outputs.
Also it is possible to select a "reverse action" for the proportional fan
output, like the valve outputs, it will give a 0V to turn on the motor at top
speed and 10V to turn it off.
P06 and P07: These parameters tell the thermostat which kind of valve
will be wired to the heating output and the cooling output, respectively.
The thermostat can be configured to control NO or NC (normally open or
normally closed) ON/OFF valves or 0..10V proportional valves.
In case of 0..10V proportional valve the following kind of action can be
configured:
Direct action: means that the thermostat provides 0V at the output to
close the valve and 10V to open it.
Reverse action: means that the thermostat provides 10V at the output to
close the valve and 0V to open it.
P08: This parameter sets the type of the sensor used for the acquisition of
the delivery water temperature.
When set to value 0 or 1 we mean that a sensor is used for the acquisition
of the water temperature, properly wired to terminals 13 and 14: when
1 is set, the temperature value can also be displayed, according to the
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