GB
21
In order to control the device from the control panel, it first has to
be connected to mains. If the power line is provided with a main
switch, it should be on.
- Start the system by toggling the main switch
- Switch on the system with the main switch.
If one of the 2 symbols flashes it means that the water temperature
(hot or cold) is not met and it makes the fan stop until the water
reaches the requested temperature.
If after powering the device the board detects the H2 probe, the
start-up will take place under normal conditions with minimum and
maximum thresholds.
The board can also operate without a H2 probe, case in which the
fan stop thresholds will be ignored.
When the control is in this operating mode, the anti-freeze safety is
secured. If the room temperature drops below 5°C the hot water
solenoid valve and boiler go-ahead outputs activate.
The adjustment range goes from 16 to 28 °C, with a resolution of
0.5 °C, but the system also allows the out of range values 5 °C,
(except when in auto mode).
These values should be set only for short periods of time, the
selection should then be adjusted to an intermediate value.
The control is very precise, set it to the desired value and wait
for it to run the adjustment based on the actually detected room
temperature.
To activate the device
key
Operation
Display
Press the ON stand-by key
From off to on
Select one of the 4 operation modes by pressing the relative key.
key
Operation
Display
Press the Heating / Cooling key for about 2 seconds to switch between heating and cooling operating modes;
the selection is shown by 2 heating on or cooling on symbols that will light up.
In heating, the symbol is alight when the setpoint is higher than the room temperature, both are switched off when
the setpoint is lower.
In cooling, the symbol is alight when the setpoint is lower than the room temperature, both are switched off when
the setpoint is higher.
In 4-pipe versions provided with automatic cooling/heating regulation system if the 2 symbols are switched on at
the same time it means that the setpoint has been reached (neutral band).
key
Operation
Display
Press the ON stand-by for about 2 s: When the device is in "stand-by" status (no function) there are
no light signals on the display.
Off
key
Operation
Display
Use the two increase and decrease keys to set the desired room temperature displayed on the 3
digit display.
20.
5
Temperature selection
Stand By
Heating / cooling operating mode set-up
Activation
General start-up
