
Green LED - alight
Yellow LED - blinking
Red LED 1 - off
Red LED 2 - off
Red LED 3 - off
Buzzer - off
Relay - deactivated
(Solenoid valve open)
Fig. 2 - "Non operating" status
1.u - POWER-UP AND NORMAL OPERATION
When switched on, or after a power failure, the appliance assumes
non-operating
status
one
(it does not detect gas) for
minute while the sensor warms up (fig. 2).
After one minute the appliance resumes “
(fig. 3).
normal operating status”
USER INSTRUCTIONS
!
2.u - INDICATION OF VERY LOW AND LOW GAS
CONCENTRATION
If during normal operation the appliance detects a very low concentration of gas, the
red LED 3 will light up (fig. 4).
If the concentration increases, the red LED 2 will also light up (fig. 5).
Green LED - alight
Yellow LED - off
Red LED 1 - off
Red LED 2 - off
Red LED 3 - off
Buzzer - off
Relay - deactivated
(Solenoid valve open)
!
Fig. 3 - "Normal operation" status
Green LED - alight
Yellow LED - off
Red LED 1 - off
Red LED 2 - off
Red LED 3 - alight
Buzzer - off
Relay - deactivated
(Solenoid valve open)
Fig. 4 -
Very low gas concentration
indicated
!
Green LED - alight
Yellow LED - off
Red LED 1 - off
Red LED 2 - alight
Red LED 3 - alight
Buzzer - off
Relay - deactivated
(Solenoid valve open)
!
Fig. 5 - Low gas concentration
indicated
3.u - INDICATION OF GAS WARNING AND GAS ALARM
WARNING: gas can be smelt in the environment before
the appliance signals alarm.
Where several units are BUS
connected, peripheral units in “gas
alarm level” status will transmit a
signal to the main unit, which
switches to “gas alarm level from
BUS” status.
This condition is indicated by red LED
1 only, which remains permanently
alight (Fig. 8).
Main unit in BUS connection only
Green LED - alight
Yellow LED - off
Red LED 1 - alight
Red LED 2 - off
Red LED 3 - off
Buzzer -
1 signal every second
Relay - activated
(Solenoid valve closed)
!
Fig. 8 -
“Gas alarm level from BUS"
status
1s 1s
15
If the gas concentration in the air exceeds the intervention threshold, the appliance
indicates this situation by activating the red LED 1 alarm and simultaneously emitting an
intermittent buzzer sound (fig. 6).
If the gas presence alarm situation lasts for longer than 15 seconds, the appliance relay is
activated and closes the solenoid valve, if connected (fig. 7).
Green LED - alight
Yellow LED - off
Red LED 1 - alight
Red LED 2 - alight
Red LED 3 - alight
Buzzer -
1 signal every second
Relay - deactivated
(Solenoid valve open)
!
Green LED - alight
Yellow LED - off
Red LED 1 - alight
Red LED 2 - alight
Red LED 3 - alight
Buzzer -
1 signal every second
Relay - activated
(Solenoid valve closed)
!
1s 1s
1s 1s
Fig. 6 -
"Gas presence alarm" status
Fig. 7 - "Gas presence alarm" status
and relay activation
EN
Содержание 1GA47917GPL/P
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