Installation
2106M0525 Iss 2 Nov 05 14
To install cabling use the following procedure:
1 Open the lid of the enclosure.
Unscrew the four M4 captive securing screws, using a 4 mm (0.16 in.) A/F hex key wrench.
The lid is attached to the base by a retaining hinge. Lift the lid vertically away from the
enclosure base and then tilt it away from the base.
2 Fit the field cabling to the enclosure.
Use either of the following:
Conduit - Ensure that a conduit sealing fitting is placed within 18 in. of the enclosure on all
conduit runs.
Cable - using any suitable certified cable entry device.
Use armored multi-core cable, 2-wire plus screen for toxic/oxygen detector, 3-wire for
flammable detector. Cable entry devices must be selected in accordance with the marking
on the certification label on the cover of the enclosure.
Note All unused cable/conduit entries must be sealed with the supplied certified sealing
plug.
Star Ground/Earth Point
+ve
Signal
-ve
Gas Detector
Earth/Ground Point
Enclosure 1
Enclosure 2
To avoid bond
cable screens to ground/earth at the
detector controller, but both
ground loops ONLY
OR NOT
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