Operations - Vimar Eikon 20420-20421 Manual Del Instalador

3. Operations

3.1 Starting up the detector
When it is switched on, the detector runs an approx.
60 s timed PRE-HEATING cycle during which the
solenoid valve and buzzer are inhibited: this cycle
is indicated by both the green LED
LED ON.
3.2 Normal operations
Once the preheating cycle has terminated, the yellow
LED turns off and the green LED
indicate that the detector is operational.
18 - ENGLISH
and yellow
stays on, to
1. see "Technical characteristics - operating threshold"
3.3 Alarm
Once danger threshold 1 has been exceeded (alarm)
the red LED turns on, the buzzer sounds and,
if the danger condition persists for more than 20 s,
the detector closes the solenoid valve and switches
the relay.
The command is given by means of a pulse which is
repeated every 15 seconds, sent to terminals 6 and
7 and by commutation of the output relay contact
(terminals 3-4-5).
The pulse is indicated by the yellow LED (flashing
during the pulse signal to the solenoid valve).
When the red LED goes out (end of the state
of alarm), the buzzer is switched off, the contact on
terminals 3-4-5 is commutated and the pulses to
terminals 6 and 7 stop.
It is now necessary to reset the solenoid valve by
hand in order to reinstate the normal gas supply.