44
RT-SVX071A-EN
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 8.
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
Table 8.
Zone sensor module wiring (continued)
Distance from Unit to Control
Recommended Wire Size
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.
Space Temperature Averaging
Space temperature averaging is accomplished by wiring a
number of remote sensors in a series/parallel circuit.
Using the BAYSENS016* or BAYSENS077*, at least four
sensors are required to accomplish space temperature
averaging.
•
Example #1 illustrates two series circuits with two
sensors in each circuit wired in parallel. The square of
any number of remote sensors is required.
•
Example #2 illustrates three sensors squared in a
series/parallel circuit. Using BAYSENS077*, two
sensors are required to accomplish space temperature
averaging.
•
Example #3 illustrates the circuit required for this
sensor. lists the temperature versus resistance
coefficient for all sensors.
