RT-SVX36G-EN 77
Installation
4. Do not run the AC low voltage wiring in the same conduit with the high voltage power wiring.
Controls using DC Analog Input/Outputs
Before installing any connecting wiring between the unit and components utilizing a DC analog
input/output signal, refer to the appropriate illustration in Figure 9, p. 34 - Figure 10, p. 36 for the
electrical access locations provided on the unit and
Ta b le 2 9 for conductor sizing guidelines and;
1. Use standard copper conductor thermostat wire unless otherwise specified.
2. Ensure that the wiring between the controls and the unit's termination point does not exceed
two and a half (2.5) ohms/conductor for the length of the run.
Note: Resistance in excess of 2.5 ohms per conductor can cause deviations in the accuracy of the
controls.
3. Do not run the electrical wires transporting DC signals in or around conduit housing high
voltage wires.
Units equipped with a Trane Communication Interface (TCI), BACnet Communication Interface
(BCI), or LonTalk communication Interface (LCI) option which utilizes a serial communication link;
• Must be 18 AWG shielded twisted pair cable (Belden 8760 or equivalent).
• Must not exceed 5,000 feet maximum for each link.
• Must not pass between buildings.
Constant Volume System Controls
Remote Panel w/o NSB - (BAYSENS110*)
This electronic sensor features four system switch settings (Heat, Cool, Auto, and Off) and two fan
settings (On and Auto) with four system status LED's. It is a manual or automatic changeover
control with dual setpoint capability. It can be used with a remote zone sensor BAYSENS077*. Refer
to Tabl e 30 for the Temperature vs. Resistance coefficient.
Zone Temperature Control Zone Panel (5U68) - (BAYSENS108*)
This electronic sensor features four system switch settings (Heat, Cool, Auto, and Off) and two fan
settings (On and Auto). It is a manual or automatic changeover control with dual setpoint capability.
Variable Air Volume and Constant Volume System Controls
Remote Panel w/o NSB (5U59) - (BAYSENS021*)
The remote panel w/o Night setback has a system switch as well as a S/A temperature setpoint
indicator, a local sensor, and four LED's. These features allow the operator to control system
operation, and monitor unit operating status from a remote location. Use the installation
instructions that shipped with the panel to install it, and the unit's field wiring diagram to connect
it to the unit.
Table 29. DC Conductors
Distance from unit to
control Recommended wire size
000-150 feet 22 gauge
151-240 feet 20 gauge
241-385 feet 18 gauge
386-610 feet 16 gauge
611-970 feet 14 gauge
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