Controls Interface; Wired Controllers-Communication Wiring; Units With Tracer Zn510 And Zn520 Only; Device Addressing - Trane UniTrane Installation, Operation And Maintenance Instructions

Controls Interface

Wired Controllers—Communication Wiring

Units with Tracer ZN510 and ZN520 Only

Communications
Tracer ZN510 and ZN520 controllers are LonTalk
Summit building management system. Reference the unit wiring diagram or submittals.
Ground shields at each Tracer ZN510 and ZN520, taping the opposite end of each shield to prevent
any connection between the shield and anther ground. Refer to the most recent version of Trane
publication CNT-SVX04A-EN (Tracer ZN.520 Unit Controller: Installation, Operation and
Programming Guide) for the communication wiring diagram.
Communication wire must conform to the following specification:
1. Shielded twisted pair 18 AWG
2. Capacitance 23 (21–25) picofarads (pF) per foot
3. Listing/Rating—300 V 150C NEC 725-2 (b) Class 2 Type CL2P
4. Trane Part No. 400-20-28 or equivalent, available through Trane BAS Buying Group Accessories
Note: Communication link wiring is a shielded, twisted pair of wire and must comply with
Follow these general guidelines when installing communication wiring on units with a Tracer
ZN510 or ZN520 controller:
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Note: You do not need to observe polarity for LonTalk communication links.

Device Addressing

LonTalk devices are given a unique address by the manufacturer. This address is called a Neuron
ID. Each Tracer ZN510 and ZN520 controller can be identified by its unique Neuron ID, which is
printed on a label on the controller's logic board. The Neuron ID is also displayed when
communication is established using Tracer Summit or Rover service tool. The Neuron ID format
is 00-01-64-1C-2B-00.
Wire Characteristics
Controller communication-link wiring must be low capacitance, 18-gage, shielded, twisted pair
with stranded, tinned-copper conductors. For daisy chain configurations, limit the wire run length
to 5,000 ft. Truck and branch configurations are significantly shorter. LonTalk wire length limitations
can be extended through the use of a link repeater.

Recommended Communication Wiring Practices

The following guidelines should be followed while installing communication wire.
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UNT-SVX07B-EN
catalog.
applicable electrical codes.
Maintain a maximum 5000 ft. aggregate run.
Install all communication wiring in accordance with the NEC and all local codes.
Solder the conductors and insulate (tape) the joint sufficiently when splicing communication
wire. Do not use wire nuts to make the splice.
Do not pass communication wiring between buildings because the unit will assume different
ground potentials.
Do not run power in the same conduit or wire bundle with communication link wiring.
LonTalk is not polarity sensitive. Trane recommends that the installer keep polarity consistent
throughout the site.
Only strip away two inches maximum of the outer conductor of shielded cable.
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devices that interface with the Trane Tracer
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