Controls Using Dc Analog Input/Outputs; Wire); Dc Conductors - Trane Precedent YZC036E Installation, Operation And Maintenance Manual

Installation
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury. Disconnect all electric
power, including remote disconnects before servicing.
Follow proper lockout/tagout procedures to ensure the
power can not be inadvertently energized.
The transformer is located in the control panel. The circuit
breaker is located on the left side of the transformer and
can be reset by pressing in on the black reset button.

Controls using DC Analog Input/Outputs

(Standard Low Voltage Multi-Conductor

Wire)

Before installing any connecting wiring between the unit
and components utilizing a DC analog input\output signal,
refer to the Dimensions and Weights chapter for the
electrical access locations provided on the unit.
• Table 5, p. 36 lists the conductor sizing guidelines that
must be followed when interconnecting the DC binary
output devices and the system components 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.
Note: Ensure that the wiring between controls and the
unit's termination point does not exceed two and a
half (2.5) ohms/conductor for the length of the run.
• Do not run the electrical wires transporting DC signals
in or around conduit housing high voltage wires.
• Route low voltage wiring per illustrations on page 37.

DC Conductors

Table 5. Zone sensor module wiring
Distance from Unit to Control
0 - 150 feet
0 - 45.7 m
151 - 240 feet
46 - 73.1 m
241 -385 feet
73.5 - 117.3 m
386 - 610 feet
117.7 - 185.9 m
611 - 970 feet
186.2 - 295.7 m
36
Recommended Wire Size
22 gauge
2
0.33 mm
20 gauge
2
0.50 mm
18 gauge
2
0.75 mm
16 gauge
2
1.3 mm
14 gauge
2
2.0 mm
Figure 63. ReliaTel™ options module
J8 SPC PRESS DB SPC PRESS
J4
TP2 TP3
DA HEAT EXH
FAN
TP1
DA COOL
FAN SPD
J5
Figure 64. ReliaTel™ relative humidity sensor
(enhanced dehumidification operation)
Low Voltage
Terminal Block
NLTB
NLTB
12
NLTB
Located on Front
14
of Rooftop Unit
Control Box
16
18
R.H.+
J9 J10 J11
J12
J3
TP4 TP5
DEHUMID
J6
J7
Relative Humidity
13
Sensor
(Field Supplied)
15
17
19
R.H.-
Field Supplied
Cable
RT-SVX46G-EN