Recommended Wiring Practices - Trane Tracer MP581 Hardware Installation

Chapter 7 Wiring Comm5 links
40

Recommended wiring practices

Follow these guidelines when installing communication wire:
All wiring must comply with the National Electrical Code (NEC) and
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local codes.
Although Comm5 does not require polarity sensitivity, Trane GCS
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recommends keeping polarity consistent throughout the site.
Make sure that 24 Vac power supplies are consistent in how they are
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grounded. Avoid sharing 24 Vac between Comm5 controllers.
Avoid overtightening cable ties and other forms of cable wraps. This
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can damage the wires inside the cable.
Do not run Comm5 cable alongside or in the same conduit as 24 Vac
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power. This includes the conductors running from triac-type inputs.
In open plenums, avoid running wire near lighting ballasts, especially
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those using 277 Vac.
• Use a daisy chain configuration
• Use termination resistors as described in "Termination resistance
placement for Comm5 links" on page 42
Insulate termination-resistor leads.
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Use only one type of communication wire—do not mix different types
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of wire.
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