emmeti TAM-15 Manual De Instalacion Y Uso página 43

TEMPERATURE ACQUISITION
This controller acquires both the room temperature and the delivery water
temperature in the fan-coil exchanger with NTC type sensors.
The controller features an internal temperature sensor and also an input
for a remote sensor is available.
The selection between internal or remore sensor is done through parameter
P11 of the "installer configuration".
The supply water temperature in the fan-coil is acquired through a remote
NTC sensor.
The delivery water sensor does not have to be installed in case the system
does not require it. To enable delivery water sensor related functions, see
the "Cut-off temperature function" section.
In case the room or water temperature falls outside the operating range,
the display shows "Or" (out of range). In case the sensor is faulty as an
open or a short circuit, the display shows "EEE" (error): in this situation,
functions which need the temperature are not performed.
CUT-OFF TEMPERATURE FUNCTION
The cutoff temperature function is used to inhibit the fan operation
whenever, in heating mode, the delivery water is not hot enough. In
order to accomplish this function a delivery water sensor must be wired,
alternatively, a bimetallic thermostat can be wired to the same terminals.
In case the delivery water sensor is used, the "water hot enough" threshold
is defined on parameter P23. In case this function is not needed, parameter
P23 can be set to a very low value (0).
In case a bimetallic thermostat is used for this function, parameter P08
must be set to the value "2": in this case the fan operation will be enabled
only when the bimetallic contact is closed.
When this type of bimetallic thermostat is used the water temperature
cannot be displayed, nor the automatic changeover function can be
performed. Please refer to the section "Installer Configuration" to set
the parameters related to the above described functions. The cut-off
temperature function is also available in cooling mode. In this case the
fan operation is inhibited when the water delivery is not sufficiently cold,
according to the threshold defined on parameter P24. In case this function
is not needed, parameter P24 can be set to a very high value (99).
When the delivery water temperature is not sufficiently hot or cold as
per P23 and P24 thresholds, the display shows the " " icon. The fan is
inhibited and the fan speed symbols flash.
ELECTRIC HEATER SYSTEM
The thermostat can be configured (P01=2) to manage a system with an
electric heater for heating the room and a valve that regulates the cool
water for cooling the room. Follow the wiring diagram in Fig. 12 e and
Fig. 12 f. In this type of system it is suggested to set a delay on the
fan switch-off on P22, so that when the electric heater is switched off,
the fan keeps running to cool the heater down. When the fan motor is
proportional driven, for the same purpose of cooling the heater down, it is
possible to set on parameter C14 a minimum speed that will be maintained
when the electric heater is on. In this type of system it is possible to have
a neutral zone regulation setting the automatic heating/ cooling selection
(P02=1). In case the cut-off temperature function is used in this system,
the fan will never be inhibited while in heating mode.
INTEGRATING ELECTRIC HEATER SYSTEM
This regulator can be configured (P01=3) to manage a special plant type
featuring two heating systems: one with a hot water flow controlled by
a valve, the other with an integrating electric heater. In this mode the
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