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Installing the Hardware
Installing the External Alert
The CMS external alert is an optional device that indicates when an undesir-
able situation affecting a split or line group has occurred. Unlike alerting dev-
ices for the MERLIN LEGEND system, the CMS alert connects to a dedicated
line jack on the MERLIN LEGEND control unit through a SPIRIT CS Alerter
Interface and is the only alert that can be used to monitor CMS exceptions.
The SPIRIT CS Alerter Interface requires special wiring between the control
unit and the interface. To install the interface and alert, complete the follow-
ing steps. You will need MERLIN LEGEND Form 2c, System Numbering—
Trunk Jacks to identify the line jack to which each alert connects.
1.
Place the alerter interface as close as possible to the MERLIN LEGEND
control unit and an AC outlet not controlled by a switch.
Using 2-pair DIW wire and modular connectors, make a cord long
2.
enough to run between the alerter interface and the control unit having
the wiring positions shown in Figure 2-1.
IMPORTANT
Make sure you reverse the green and yellow wires in positions 3
and 4, respectively.
3.
Connect the cord you built in step 2 to the control unit and the alerter
interface, taking care to insert the correct plug into each unit.
4.
Place the external alert where desired.
5.
Run a standard 2-pair cord between the external alert and the alerter
interface. If the distance is less than 25 feet, use a standard 4-
conductor modular cord set. If the distance is greater than 25 feet,
make a cord the proper length using 2-pair DIW wire and modular con-
nectors. Make sure the connections are the same on both ends (posi-
tion 1, black; position 2, red; position 3, green; and position 4, yellow).
Connect the cord from step 5 to the external alert and the alerter inter-
6.
face.
Installation Procedures
2-9
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