LG AC Ez Touch User Manual page 71

HOW TO USE
71
<Emergency stop function set-up>
AC Ez Touch has an emergency stop function to stop all connected equipment (Air-
conditioner/Ventilation/Heating equipment) when there is an emergency in the building.
When DI port detects a short circuit signal, AC Ez Touch stops the operations of all connected
equipment.
Regarding emergency stop function, it can be used by connecting to the DI port of external pow-
erless contact type on the rear of AC Ez Touch as shown below.
AI+
DI +
COM -
!
NOTE
DI port shall always be in open state except the emergency situation.