
Typical Wiring Schematic for GS300M & CO200 Duct
Ph
N
12
11
10
9
8
7
6
5
4
SENSOR 1
2
5
4
3
1
FAULT
RELAY
PRE-
ALARM
NO. 1
MAIN
ALARM
RELAY
PRE-
ALARM
NO. 2
NC
NC
NC
NC
NO
NO
NO
NO
C
C
C
C
Note:
Connections for other detectors may differ.
Check detector datasheet wiring schematic.
1mm2 CSA cable only
12 V
BATTERY
(IF STANDBY
BATTERY
REQUIRED)
Key
Gas Valve
Audible
alarm
6
7
SENSOR 2
1
2
3
SENSOR 3
1
2
3
1
2
3
5
4
6
7
8
FAULT
RELAY
ALARM
RELAY
w:
www.duomo.co.uk
-
e:
-
t:
01905 797989
-
f:
01905 774296
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©
Duomo (UK) Ltd. 2007
In Case Of Alarm
Extinguish any naked flames.
Do not switch lights or electrical devices on or off.
Open all windows and doors to increase ventilation.
If the audible alarm changes from continuous to
intermittent the levels of gas have dropped. A
responsible, qualified person is now safe to find the
cause of the alarm.
If the alarm sound remains constant, and the cause
is not evident or possible to eliminate turn off the
emergency isolation valves to the area and contact
your gas provider emergency line. They will advice
accordingly.
TWA Alarm Reaction Times
Carbon Monoxide Exposure
CO concentration
30ppm
50ppm
100ppm
300ppm
Alarm after
120 mins.
60 mins.
10 mins.
<1 min.
Diagram of Detection
Symptoms
CO concentration
5000ppm
1500ppm
800ppm
400ppm
250ppm
150ppm
Death in 20 minutes
Death in 2 hours
Convulsions in 30 minutes
Bad headache in 30 minutes
Headache in 2 hours
Headache in 3 hours
0
0
5
10
20
25
15
50
100
200
300
150
250
350
17.3
20
14.6
12
4
6.7
9.3
Level of Carbon Monoxide (ppm)
TW
A
O
u
tp
u
t
(m
A
)
3/5A
Power
Supply 230V
AC
N