Requirements
Installation Requirements
Wiring Precautions
The 4604-920 1 Graphical LCD has the following installation requirements:
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The 4604-920 1 Graphical LCD Annunciator can be semi-flush-mounted or
surface-mounted.
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A maximum of 3 1 annunciators can be connected to a 4 100 FACP.
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When wiring an annunciator, at least 18 AWG twisted wire is required.
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If twisted-shielded pair wire is used, the shield must be grounded in the
4100 FACP.
The following wiring precautions should be observed when wiring the Graphical
LCD Annunciator.
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All wiring must be copper-conductor.
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Wire lengths in excess of those listed in Tables 1 through 5 are not permitted.
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If shielding is used, you must observe the following:
- Metallic continuity of the shield must be maintained throughout the entire
length of the cable.
- The entire length of the cable must have a resistance greater than 1 Megohm
to earth ground.
- The shield must connect to a SHIELD terminal at each annunciator, and
must be grounded only at the main panel.
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If shielded wire is not used, wire must be run in metallic conduit or equivalent.
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Underground wiring must be free of water.
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Wires must not be run through elevator shafts.
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Wire runs in plenums must be in conduit.
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Splicing is permitted provided that:
- All such connections are soldered (rosin-core solder), crimped in metal
sleeves, or encapsulated with an epoxy resin.
- When solder or crimped metal sleeves are used, the junction is insulated
with a high-grade electrical tape as sound as the original insulating jacket.
- The shield’s continuity is maintained throughout the cable’s length.
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The annunciator box must be connected to Earth Ground or building steel.
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Only system wiring can share the same conduit.
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