38 RT-SVX34C-EN
Installation Electrical
Field Installed DC Control Wiring
WARNING
Proper Field Wiring and Grounding Required!
All field wiring MUST be performed by qualified personnel. Improperly installed and grounded
field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow
requirements for field wiring installation and grounding as described in NEC and your local/
state electrical codes. Failure to follow code could result in death or serious injury.
NOTICE:
Use Copper Conductors Only!
Unit terminals are not designed to accept other types of conductors. Failure to use copper
conductors may result in equipment damage.
Before installing the connecting wiring between the components utilizing a DC analog output/input
signal and the unit, refer to Table 13, p. 38 for conductor sizing guidelines and;
• Use standard copper conductor thermostat wire unless otherwise specified.
• Ensure that the wiring between the controls and the unit's termination point does not exceed
two and a half (2-1/2) ohms/conductor for the length of the run.
Note: Resistance in excess of 21/2 ohms per conductor can cause deviations in the accuracy of the
controls.
• Refer to dimensional drawings beginning with Figure 1, p. 17 for the electrical access
locations provided on the unit.
• Do not run the electrical wires transporting DC signals in or around conduit housing high
voltage wires.
Units equipped with the Trane Communication Interface (TCI) 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.
Table 13. 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
To Next Page
Loading...
