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To calculate the maximum cable run length from the controller to the detector see page 23.
AC Supply
Gas Detector
Wiring
Caution An earth point is provided inside the controller. Ensure that all
detector screens/armor are grounded at a single earth star point at
the controller or detector — BUT NOT BOTH — to prevent false
alarms due to earth loops.
All electrical wiring connections are made via the Terminal Module. Wire size from 0.5 to
2
2.5 mm
(20 AWG to 14 AWG). 1.0 mm
TP1MAN Issue 3 Apr 06 (MAN0630)
2
is preferred.
Neutral
Live
Earth
Star Ground/Earth Point
+ve
Signal
-ve
Installation
14
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