CLIMAVENETA a-CHD U-2T Serie Manual De Instalación Y Funcionamiento página 79

WALL-MOUNTED CONTROLS
DESCRIPTION OF FUNCTIONS
SUMMER mode of operation
The Summer mode is selected by setting the mode selector
on the relative symbol .
In this mode the resources are managed as follows:
- the summer mode valve is always ON;
- the winter mode valve is always OFF;
- the fans are always enabled according to the Too Cool
function and operate at the speed set with the fan speed
selector.
WINTER mode of operation
The Winter mode is selected by setting the mode selector
on the relative symbol .
In this mode the resources are managed as follows:
- the summer mode valve is always OFF;
- the winter mode valve is always ON;
- the fans are always enabled according to the Hot Start
function and operate at the speed set with the fan speed
selector.
AUTO mode of operation
The controller automatically selects the mode of operation in
relation to the type of plant selected:
- 2 pipes system: selects the mode of operation in relation
to the water temperature;
- 4 pipes system: selects the mode of operation in relation
to the air temperature.
AUTO fan mode
The controller will define the fan speed as much high as the
difference between the desired room temperature against
the current one.
Master/Slave network
EKW control could manage Master-Slave network up to 8
LIFE fan coil units, just with two wires connections and with-
out other interfaces.
EKW control could be set as:
- -Master interface: control manages all units connected to
the network. All units work as Master control settings.
Master
1....
Slave
Hot Start function
This function is available in the heating mode and it only
activates the fan if the water is hot enough. It is not available
if the heating element is installed.
Too Cool function
This function is available in the cooling mode, but only acti-
vates the fan if the water in the coil is cold enough.
Failure display
When the ventilation is inhibited by inadequate temperature
mode of operation required and there is a request for ther-
moregulation, led associated with the request flashes.
Temperature sensors failure. If the ambient temperature
sensor is damaged, led for selected mode of operation win-
kles with the sequence: 1 flash and pause for 3,5 sec.
If the heat exchanger temperature sensor is failure (short-
circuit), led for selected mode of operation winkles with the
sequence: 2 flashes and pause for 2,5 sec.
Window contact standy. If the entry ID1 is activated and
configured as a contact window, the decommissioning
expenditure is reported by the flash led corresponding to the
mode of operation and intensity of ventilation required.
Reduce leds' brightness
While pressing the keyboard mode of operation for at least 2
sec, causes halving or restoring indicator lamps' brightness.
- Slave interface: if specific terminal unit connected to the
network had to work at different conditions respect Master,
EKW connected to that unit would be configured as Slave
control and unit runs with different settings. EKW to work
as Slave control has to addressed using dip-switch.
Controller
2....
Slave
User
8
Slave
37
EN