Installation
64 RT-SVX36K-EN
Controls Using 24 VAC
Before installing any connecting wiring, refer to Figure 14,
p. 28 and Figure 15, p. 29 for the electrical access locations
provided on the unit and Table 29 for AC conductor sizing
guidelines, and;
1. Use copper conductors unless otherwise specified.
2. Ensure that theAC control wiring between the controls
and the unit's termination point does not exceed three
(3) ohms/conductor for the length of the run.
Note: Resistance in excess of 3 ohms per conductor may
cause component failure due to insufficient AC
voltage supply.
3. Be sure to check all loads and conductors for grounds,
shorts, and mis-wiring.
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 14, p. 28 -
Figure 15, p. 29 for the electrical access locations provided
on the unit and
Table 30 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 aTrane 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 Table 31 for theTemperature vs.
Resistance coefficient.
ZoneTemperature 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.
DischargeTemperature Control Changeover
Contacts (5K87)
These contacts are connected to the RTM when daytime
heating on DischargeTemperature Control units with
internal or external hydronic heat is required. Daytime
(occupied) heating switches the system to a Zone
Temperature Control type mode of operation. Refer to the
unit wiring diagram for the field connection terminals in
the unit control panel.The switch must be rated at 12 ma
@ 24 VDC minimum.
Remote Human Interface Module (5U66)
The remote Human Interface module enables the operator
to set of modify the operating parameters of the unit using
it's 16 key keypad and view the operating status of the unit
on the 2 line, 40 character LCD screen without leaving the
building. However, the Remote Human Interface module
can not be used to perform any service functions.
Table 29. AC Conductors
Distance from unit to control Recommended wire size
000-460 feet 18 gauge
461-732 feet 16 gauge
733-1000 feet 14 gauge
Table 30. 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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