Page 6
Legend setting switches
S1) switch group reserved to the probe N° 1
S2) switch group reserved to the probe N° 2
S3) switch group reserved to the probe N° 3
1) Selection of positive safety
2) Operating mode of the main alarm relay.
3) Selection of MEMORY.
N.B. You can remove the selection of memory
when the gas CO is selected.
4) Selection for oxygen detection
Diagram of the terminal block relay
WARNING.
Before connecting to the mains power, ensure the voltage is correct.
Carefully follow the instructions and the connections according to Regulations in force, keeping in
mind that the signal cables should be laid separate from the power cables.
An automatic cut-off switch (appropriately identified as devicesectioning of the detector) should be
incorporated in the electrical system, adequatelylocated and easily accessible.
Electrical Connections
Power supply
230 VAC
PH N 4 5 6 7 8 9 10 11 12
C
N C
NO
C
N C
NO
C
N C
NO
C
N C
NO
Fault 1st threshold 2nd threshold Main alarm
PLEASE NOTE!
All relays are free of voltage
Connection of probes and eventual battery
12 V
1 2 3 4 5 6 7
+
+
Optional
3 2 1
Probe 1
3 2 1
Probe 2
3 2 1
Probe 3
R1 R2 R3
Switch 1
Intrinsic safety selection
Switch 2
Main alarm relay functioning mode
Switch 3
Maintaining of the memory of alarm,only when
you set the CO gas
Switch 4
Selecting OXYGEN mode
Power terminal block Sensors terminal block
S1 S2 S3 S4 1 2 3 4
Deleting or disabling the probes
monitored gas type selection
