Trane YSC120 - Control Wiring Specifications; 24 V AC Conductor Sizing; DC Conductor Sizing; DC Analog Input;Output Wiring

23RT-SVX31A-EN
Table 2A
24V AC Conductors with Reliatel
Distance from Unit Recommended
to Control Wire Size
000 - 460 feet 18 gauge
000 - 140 m .75 mm
2
461 - 732 feet 16 gauge
141 - 223 m 1.3 mm
2
733 - 1000 feet 14 gauge
224 - 305 m 2.0 mm
2
Controls using DC Analog Input/
Outputs
(Standard Low Voltage
Multiconductor Wire)
Before installing any connecting wiring
between the unit and components utiliz-
ing a DC analog input\output signal, re-
fer to Figure 2 for the electrical access
locations provided on the unit.
a. Table 3 lists the conductor sizing
guidelines that must be followed
when interconnecting the DC binary
output devices and the system com-
ponents utilizing a DC analog
input\output signal to the unit.
Note:
Resistance in excess of 2.5 ohms per
conductor can cause deviations in the
accuracy of the controls.
b. Ensure that the wiring between con-
trols and the unit’s termination point
does not exceed two and a half (2.5)
ohms/conductor for the length of the
run.
c. Do not run the electrical wires trans-
porting DC signals in or around
conduit housing high voltage wires.
d. Route low voltage wiring per illustra-
tions on page 25.
DC Conductors
Table 3
Fee
t
Meter s
0 - 150 0 - 46 22 gauge 0.33 mm
2
151 - 240 47 - 73 20 gauge 0.50 mm
2
241 - 385 74 - 117 18 gauge 0.75 mm
2
386 - 610 118 - 185 16 gauge 1.30 mm
2
611 - 970 186 - 296 14 gauge 2.00 mm
2
A
re
a
Distance fro
m
Unit to Control
Recommended
Wir e Size
Installation