Installation
24 RT-SVX37B-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 “Unit Dimensions,” p. 11 for the electrical access
locations provided on the unit.
• Table 4 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 Figure 26, p. 24.
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 in Figure 28, p. 26 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 Figure 28, p. 26 illustrates three sensors
squared in a series/parallel circuit. Using BAYSENS077*,
two sensors are required to accomplish space
temperature averaging.
Table 4. Zone Sensor Module wiring
Distance from Unit
to Control
Recommended
Wire Size
0 - 150 feet 22 gauge
0 - 45.7 m .33 mm2
151 - 240 feet 20 gauge
46 - 73.1 m .50 mm2
241 -385 feet 18 gauge
73.5 - 117.3 m .75 mm2
386 - 610 feet 16 gauge
117.7 - 185.9 m 1.3 mm2
611 - 970 feet 14 gauge
186.2 - 295.7 m 2.0 mm2
Figure 25. ReliaTel conventional thermostat field wiring
diagrams
RTRM
Figure 26. ReliaTel control customer low voltage
routing
Figure 27. ReliaTel options module
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