Carrier B Manuel D'installation page 5

Type B Electronic Control
Control
Energy saving
This function is especially useful when air conditioning at night or
in rooms where the user is likely to be absent for a longer period
of time. In this case, by selecting the function
cooling mode and reduce it by 4°C in heating mode. Enabling this
Seasonal changeover
Manual
Selection of heating/cooling is done manually by pushing the button
on the control.
Automatic
The automatic seasonal changeover allows automatic switching of
the fan coil operating mode to cooling or heating, depending on the
temperature set by the user and on the room temperature.
The control has an input that can be used as window contact or
presence detection. When such a signal is activated (presence of
line voltage on the terminal block contact) the control is set to OFF
(open window) or to Energy Saving (empty room), depending on
If the control is set to OFF, as a consequence all outputs are
disconnected (fan, valves, etc.) and only the frost protection
function is active if it has been enabled by its corresponding
dip-switch. If the control is set to Energy Saving, the internal
temperature is raised by 4°C in cooling mode and reduced by 4°C
in heating mode.
To switch from one operating mode to the other, keep the Power
button and the speed selection button pressed for at least 5
seconds.
when switching from Energy Saving to OFF.
"Night" and "Darkening" mode
If the buttons and the knob are not pressed or used for 10 seconds,
the light is dimmed by the LEDs to reduce the disturbing light. This
light can be fully darkened ("Darkening" mode).
The "Darkening" mode can be selected by setting the fan speed to
its maximum value and keeping the selection button of fan speed
maximum speed. With the same operation it is possible to return to
selection is active.
Booster heating
This function allows the water soilenoid valve and the electric
heaters to work simultaneously. With this function activated by the
switch) – the function is active.
To avoid over heating due to simultaneous operation of water and
heating elements, the temperature of the incoming water of the coil
is adjusted by a special sensor (optional) that must be positioned
on the inlet pipe. If the function is active but the sensor is not
and all the user devices are switched off.
Sensor installation
Open the control by loosening the screw
electronic board to connector
7). Complete by insulating the pipe with the insulating tape supplied.
and pressing the
Button operation:
POWER this button is used to turn the control on and off. When
MODE this button is used to manually switch from cooling to
FAN this button is used to select the fan speed manually (low,
used to close the
Fig. 6
Fig. 7
it is OFF, all functions are disconnected but the control is still
powered at 230V.
If the frost protection function is selected by the special
microswitch, this function is active even if the control is off.
heating mode and vice versa. The automatic operating mode
is also available: the heating or cooling mode are automatically
selected by the microprocessor depending on the external
temperature.
medium and high speed).
Keep on pressing this button to select the automatic fan speed
selection, which is controlled by the microprocessor. If this
operating mode is selected, the yellow LED is on. Moreover, by
using the same button it is possible to select the Energy Saving
function where the room temperature required is raised by 4°C
in cooling mode and reduced by 4°C in heating mode. The green
LED is on when the Energy Saving mode is active.
E N G L I S H
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