Led Test; Alarm 1 Relay Operation; Alarm 2 Relay Operation; Fan Relay Operation - TECSYSTEM T119 DIN Instruction Manual

LED TEST

We recommend the unit LEDS are tested regularly. For this operation press the TEST button briefly, all the leds light up
for 2 seconds.
If one of the LED does not work, please return the control unit to TECSYSTEM for repair.

ALARM 1 RELAY OPERATION

The ALL1 (L1) relay operates when the unit is powered, therefore the N.O. contact is closed. In case of an alarm on the
ALL1 (L1) PTC or a fault in the control unit itself, the relay gets de-energised with consequent closing of the N.C. contact.
The ALL1 (L1) relay also has the same function as the PTC sensor FAULT. If this relay is triggered when the PTC sensor
FAULT LED is FLASHING, it means that there is an error in the reading of a PTC sensor. It is possible to find it, thanks to
a second LED flashing which corresponds to the FAULT channel.

ALARM 2 RELAY OPERATION

The ALL2 (L2) relay is normally de-energized and energizes when there is an alarm on the L2 PTC.
FAN RELAY OPERATION (VENTILATION)
During programming, it is possible to set the cooling time or to exclude the FAN option. If the FAN is excluded, the relay
doesn't energize and for this reason it is possible not to install the corresponding PTC.
If the FAN is set up, the relay activates when the relative PTC sends the first signal and the FAN LED is steady ON: the
relay is active for as long as the PTC senses the temperature is normal, the T119 DIN unit keeps the relay ON for the time
set during programming and the FAN LED flashes.

DELAYED VENTILATION CYCLE (DELAY ON)

STEP ACTION
1 The FAN PTC sensor is ON
The temperature goes below the PTC
2
value
The temperature raises again above the
3
PTC set threshold
IMPORTANT WARNING
Before carrying out the isolation test of the electrical panel the control unit is installed on, disconnect it with the
sensors from the power supply to prevent it from being seriously damaged.
EFFECT
the FAN relay is ON and the red LED is lit
the FAN relay remains ON for the set time and
the red LED flashes
the LED is ON all the time
T119DIN
9