Morley Fire Panels Installation Manual - Smiths Technical Systems
Morley Fire Panels Installation Manual - Smiths Technical Systems
Morley Fire Panels Installation Manual - Smiths Technical Systems
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
ZX <strong>Fire</strong> Alarm Control <strong>Panels</strong> MORLEY-IAS<br />
• It is recommended that Short Circuit Isolators be installed. Install the isolators at strategic points<br />
in the loop (i.e. zonal boundaries) to prevent an external short circuit from removing more than<br />
32 addressable points from the system.<br />
Note: The loop driver modules have built-in isolators so it is not required to place isolator modules<br />
on the outputs of the FACP.<br />
• Refer to the following diagram for information.<br />
FACP Connections<br />
Data / Power (+) OUT<br />
Data / Power (-) OUT<br />
Data / Power (+) RETURN<br />
Data / Power (-) RETURN<br />
Figure 11 – Loop Wiring with Isolators– Preferred Alternative<br />
DO NOT loop wiring under any terminals.<br />
EN54-2 requires that an isolator must be sited between each zone. You may use more than<br />
this, however, you must ensure that the loop wiring is broken at each isolation point.<br />
3.4.3.2 EMC Compliance<br />
For EMC Compliance, fit the<br />
Ferrite Absorbers supplied<br />
with the loop driver board<br />
around the SLC Loop cables.<br />
Cables should be screened<br />
and should be terminated in<br />
appropriate glands to meet<br />
local wiring codes and to<br />
preserve the integrity of the<br />
screen connection. The<br />
cable screen is to be<br />
clamped inside the cable<br />
gland, which must be fitted<br />
to ensure a 360° bond is<br />
formed with the metal of the<br />
back box. Alternatively,<br />
terminate the cable screens<br />
(drain wires) at the nearest<br />
earth stud provided on the<br />
inner top surface of the back<br />
box.<br />
The figure opposite shows<br />
the arrangement for a typical<br />
installation.<br />
Connect Earth drain<br />
wire of cables to nearest<br />
earth stud on inner, top<br />
wall of back box<br />
- keep length<br />
as short as possible<br />
ISOLATORS<br />
+ - E + -<br />
Absorber<br />
Large<br />
Affix cable tie<br />
around wires<br />
below ferrite<br />
Figure 12 – SLC Loop – EMC Absorber <strong>Installation</strong><br />
<strong>Installation</strong> <strong>Manual</strong> Document No. 996-174-000-1, Revision: 01 Page 15