Xtralis VESDA VLC-400, Product Manual

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VESDA by Xtralis VESDA VLC-400 Product Guide
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7 Installation
7.1 Checks prior to installation
Check the VESDA VLC-400 detector for any signs of shipping damage. Inform your distributor if there is any
damage.
Identify the location of where the detector is to be mounted. It should be noted that the VESDA VLC-400
detector could be mounted on a wall or a suitable secure surface (refer to Section 7.2).
7.2 Mounting the detector
Verify the selected mounting position is suitable for the detector by test fitting the VESDA VLC-400 onto the
actual mounting position. Ensure there is at least 150mm (6”) of clear space around the air inlet pipe and cable
entry points to allow for pipe and conduit entry.
Verify the correct location for the cable entry points and the sampling air pipes.
Determine the type of fasteners required to attach the mounting bracket to the mounting surface. The screw
hole size on the mounting plate is 8mm.
The detector can be mounted in one of two allowable mounting positions, as shown in Figure 7-1 and
described below:
l
Mount the detector with the air inlet pipe at the top of the box and with the air exhaust pipe at the bottom
(known as the Normal Orientation); or
l
Mount the detector with the air inlet pipe at the bottom of the box and with the air exhaust pipe at the top
(known as the Inverted Orientation).
Legend
A Cable Entry Ports
One port accessible from
rear of cover.
B Air Exhaust Port
Figure 7-1: VESDA VLC-400 Orientations Normal (Left) and Inverted (Right)
Allow 25mm (approximately 1”) for cable entries and use appropriate conduit or cable clamps where
necessary.
7.3 Removing the front cover
The front cover is removed by unscrewing the two screws. The cover is retained on the main enclosure with a
plastic tie. The cover can be removed completely by disconnecting the cable to the LED display card and
twisting the plastic tie through 90 degrees. If the detector has been installed in the inverted orientation then the
cover must be removed, rotated through 180 degrees and then refitted.
7.4 Remove plastic plugs for cable entry
To remove the plastic plugs:
1. Determine the cable entry holes to be used.
2. Use your thumb to push out the hole plugs from inside the enclosure.
It is essential to remove the exhaust-shipping plug and this is best done when the inlet pipe is inserted.