Trane IntelliPak 1, Инструкция по установке, эксплуатации и обслуживанию, Страница: 59 / 164

RT-SVX072A-EN 59
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The various field installed control panels, sensors,
switches, and contacts discussed in this section require
both AC and DC consideration. These diagrams are
representative of standard applications and are
provided for general reference only. Always refer to the
wiring diagram that shipped with the unit for specific
electrical schematic and connection information.
Controls using 24 VAC
Before installing any connecting wiring, refer to , and
Figure 2, p. 19 .for the electrical access locations
provided on the unit, and Table 27, p. 59 for AC
conductor sizing guidelines. Then check the following:
N NO OT TIIC CE E
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e eq qu uiip pm me en ntt d da am ma ag ge e a ass tth he e e eq qu uiip pm me en ntt w wa ass n no ott
d de essiig gn ne ed d o orr q qu ua alliiffiie ed d tto o a acccce ep ptt o otth he err tty yp pe ess o off
cco on nd du ucctto orrss..
1. Use copper conductors unless otherwise specified.
2. Ensure that the AC control wiring between the
controls and the unit's termination point does not
exceed three (3) ohms/conductor for the length of
the run.
N No otte e:: Resistance in excess of 3 ohms per conductor
may cause component failure due to insufficient
AC voltage supply.
3. Make sure to check all loads and conductors for
grounds, shorts, and mis-wiring.
Table 27. 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
4. Do not run the AC low voltage wiring in the same
conduit with the high voltage power wiring.
Transformer for Expansion
Module
When the expansion module is installed, a 115Vac
primary - 24Vac secondary - 75VA transformer is
provided for customer use. However, the 20T standard
efficiency, 20T high efficiency, and 25T standard
efficiency units utilize this transformer to power a
compressor solenoid so the available VA for customer
use is limited to 70VA.
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 and
Figure
2, p. 19 for the electrical access locations provided on
the unit and Table 28, p. 59 for conductor sizing
guidelines. Then check the following:
N NO OT TIIC CE E
U Usse e C Co op pp pe err C Co on nd du ucctto orrss O On nlly y!!
F Fa aiillu urre e tto o u usse e cco op pp pe err cco on nd du ucctto orrss cco ou ulld d rre essu ulltt iin n
e eq qu uiip pm me en ntt d da am ma ag ge e a ass tth he e e eq qu uiip pm me en ntt w wa ass n no ott
d de essiig gn ne ed d o orr q qu ua alliiffiie ed d tto o a acccce ep ptt o otth he err tty yp pe ess o off
cco on nd du ucctto orrss..
1. Use standard copper conductor thermostat wire
unless otherwise specified.
2. Ensure that the wiring between the controls and the
unit termination point does not exceed two and a
half (2.5) ohms/conductor for the length of the run.
N No otte e:: Resistance in excess of 2.5 ohms per conductor
can cause deviations in the accuracy of the
controls.
Table 28. 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
3. Do not run the electrical wires transporting DC
signals in or around conduit housing high voltage
wires. Units wired for a BACnet
® Communication,
LonTalk ® communication Interface (LCI), or
Modbus option which utilizes a serial
communication link must:
• be 18 AWG shielded twisted pair cable (Belden 8760
or equivalent).
• not exceed 5,000 feet maximum for each link.
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