2. Installation
8
Detecting Gas Saving Lives
English
2.3.1 Terminal designation
With the
IRmax
oriented as shown in Diagram 2 on page 4 (M20 cable entry at the
top), the 3-core field cable should be terminated using the removable connector as follows:
+24V at the bottom, 0V in the middle, Signal at the top.
The 6-pin connector on the right of the PCB is for servicing and/or connection of an
IR Display
module
+ve terminal:
+ve supply from the control card.
Sig terminal:
Signal/Sense from control card.
0 V terminal:
-ve supply from the control card.
2.3.2 Installing IRmax using a mounting bracket
a.
IRmax
can be supplied with a mounting bracket (S012130) rather than a spigot
gland so that it can be directly connected to field cables (see Diagram 5).
Diagram 5:
IRmax
with a mounting bracket and cable gland
b. If the
IRmax
is to be mounted on a flat surface, mark and drill two holes using
the mounting bracket as a template. Loosely fix two parts of the bracket using
fixings suitable for the wall/surface.
c. Remove the weatherproof cap from the
IRmax
, and slide the body of the
IRmax
through the bracket. It is recommended that the
IRmax
body is installed with the
cable entry facing downwards.
Mounting bracket: 70mm
between fixing centres.
Use M6 bolts