Under these conditions the detector will notify the alarm condition when the predetermined fixed temperature is reached.
In the event of the thermistor detecting a fast rate of change of temperature, the sensitivity of the CO detector is enhanched.
WIRING
The detector circuits requires a positive and negative supply and these are wired to terminals L1 and L on the base
(Polarity insensitive). Base terminal L2 is connected to base terminal L1 when the detector is fitted to provide continuity
monitoring through the detector. Base terminals L2 and L provide outputs to the next detector or EOL device.
In case of alarm the detector comunicate the state to control device by sinking from the supply leads an extra current
according to the figure
3
, for restoring from an alarm condition the power has to be removed for 2-5 seconds.
A drive is provided for a remote indicator connected between and terminal R, therefore at a detector where
remote indicator is connected, the polarity of the supply must be known.
MAINTENANCE
The lenght of time between service for each detector will depend upon the environment into which they are installed.
It is recommended to Inspect, test and clean the detector at least annually.
The detector must be removed for service replacement at least every 5 years.
R
L.R.
E.O.L.
L2
L
R
L2
L
L1
L1
R
L2
L
L1
Fig. 2
Connection diagram.
Fig. 3
Alarm load.
Fig. 4
Fit the detector unit onto the MUB base (as per figure ) then twist clockwise.
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
Detector voltage (V)
C
u
rr
e
n
t
(m
A
)
+
The Manufacturer reserves the right to change the technical specifications of this product without prior notice.
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