RT-SVX074A-EN
39
Figure 49.
Main control panel low voltage wiring
Table 4.
Recommended wire lengths
Wire Size
Maximum recommended wire
length from unit controller to
sensor
AWG
mm
2
Meters
Feet
22
0.33
0–46
0–150
20
0.50
47–73
151–240
18
0.75
74–117
241–385
16
1.30
118–185
386–610
14
2.00
186–296
611–970
Note:
The total resistance of these low voltage wires must not exceed 2.5
Ω/conductor. Any resistance greater than 2.5 Ω may cause the
control to malfunction due to an excessive voltage drop.
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.
•
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.
Notes:
–
Resistance in excess of 2.5 ohms per
conductor can cause deviations in the
accuracy of the controls.
–
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.
DC Conductors
Table 5.
Zone sensor module wiring
Distance from Unit to Control
Recommended Wire Size
0 - 150 feet
22 gauge
0 - 45.7 m
0.33 mm
2
151 - 240 feet
20 gauge
46 - 73.1 m
0.50 mm
2
241 -385 feet
18 gauge
73.5 - 117.3 m
0.75 mm
2
386 - 610 feet
16 gauge
117.7 - 185.9 m
1.3 mm
2
611 - 970 feet
14 gauge
186.2 - 295.7 m
0.2 mm
2
Note:
See Symbio™ 700 unit controls schematic, 1213-
4349, for controls wiring.
