Chapter 1 Before Installation
6 BMTW-SVN01F-EN
Trane requires duplex, 62.5 µm core glass fiber-optic cable with ST con-
nectors. The types of cable available for different applications include
indoor, outdoor, burial, aerial, and duct. Further descriptions of fiber-
optic cable and accessories are provided in Chapter 4, “UCM Communica-
tion-Link Wiring.”
You can order fiber-optic cables, fiber-optic modems, ST-type crimp con-
nectors, epoxy connectors, and other accessories from Trane.
LAN Communication Links—
Wiring Requirements
Coaxial Cable (10Base2 or “Thinnet”)—Ethernet
Use a 50 Ω coaxial cable (RG-58) for the Tracer Summit Ethernet link. No
other coaxial cable is supported.
You can order all Ethernet cables, adapters, crimp tools, stripper tools,
and other coaxial accessories from Trane.
For information about maximum cable length and maximum cable dis-
tance between two devices on a communication link, refer to Table 30 on
page 152.
Unshielded, Twisted-Pair Wire (10BaseT)—Ethernet
In twisted-pair wiring, one pair is used to receive data signals and the
other pair is used to transmit data signals. The two wires in each pair
must be twisted together for the entire length of the segment to maximize
the signal-carrying characteristics of a wire pair. Multiple twisted-pair
segments communicate via a multiport hub.
You can only use twisted-pair wiring between a device (BCU or PC Work-
station) and a hub. If a direct connection between two devices is required,
then you must use a hub or crossover cable. For information about maxi-
mum wire length and maximum wire distance between two devices on a
communication link, refer to Table 30 on page 152.
Use Trane-supplied Category 5 cables, jumpers, connectors, and wire ter-
minating devices. These components work well for twisted-pair wires and
provide the best possible signal-carrying system for the Ethernet media
systems.
The EIA/TIA cabling standard recommends a segment length of 295 ft
(90 m) between the wire termination equipment in the wiring closet and
the wall plate in the office. This provides 33 ft (10 m) of cable allowance to
Note:
Cable installations must comply with both federal and local codes.
Plenum-rated cable is available to meet NEC Article 725, which
addresses flame resistance and smoke emission for signal cables.
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