WattMaster OE230 Manual
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FILENAMEDATE: B. CREWSDESCRIPTION:PAGEDRAWN BY:Duct Temperature Sensor1JOB NAME07/13/15G-DUCSENS1.CDROE230 & OE231Duct Temperature SensorsOE230 (6" Probe) & OE231 (12" Probe)Mounting PlateGasketAdhesive Backed Drill GuideMounting Template11-1/2" (OE231)5-1/2" (OE230) Mounting Plate4.0"3/4"1/4" Hex Head Sheet Metal ScrewsThreadTogetherDuct WorkDrill 3/8” Hole In Ductwork For ProbeLeads Are Non-polarized.Butt Splice Leads To 24 GaugeWire Minimum. Connect LeadsTo "Analog In" And "Ground"At Controller.Notes:1 .)All Wiring To Be In Accordance WithLocal And National Electrical CodesAnd Specifications.Temperature Sensor Resistance/Voltage ChartTemp Resistance* VoltageF Ohms @ Input*-10.............93333 ........4.620-5...............80531 ........4.5500 ...............69822 ........4.4745 ...............60552 ........4.39010 ..............52500 ........4.29715 ..............45902 ........4.20020 ..............40147 ........4.09525 ..............35165 ........3.98230 ..............30805 ........3.86235 ..............27140 ........3.73740 ..............23874 ........3.605°Temp Resistance* VoltageF Ohms @ Input*°45 ..............21094 ........3.47050 ..............18655 ........3.33052 ..............17799 ........3.27554 ..............16956 ........3.21756 ..............16164 ........3.16058 ..............15385 ........3.10060 ..............14681 ........3.04262 ..............14014 ........2.98564 ..............13382 ........2.92766 ..............12758 ........2.86768 ..............12191 ........2.810Temp Resistance* VoltageF Ohms @ Input*°69 ..............11906 ........2.78070 ..............11652 ........2.75271 ..............11379 ........2.72272 ..............11136 ........2.69573 ..............10878 ........2.66574 ..............10625 ........2.63575 ..............10398 ........2.60776 ..............10158 ........2.57078 ..............9711 ..........2.52080 ..............9302 ..........2.46582 ..............8893 ..........2.407Temp Resistance* VoltageF Ohms @ Input*84 ..............8514 ..........2.35286 ..............8153 ..........2.29788 ..............7805 ..........2.24290 ..............7472 ..........2.18795 ..............6716 ..........2.055100 ............6047 ..........1.927105 ............5453 ..........1.805110 ............4923 ..........1.687115 ............4449 ..........1.575120 ............4030 ..........1.469°125 ............3656 ..........1.369*Chart Notes:1. Use the resistance column to check the thermistor sensor while disconnected from the controllers (not powered).2. Use the voltage column to check sensors while connected to powered controllers. Read voltage with meter set on DC volts.Place the "-"(minus) lead on GND terminal and the "+"(plus) lead on the sensor input terminal being investigated. If the voltageis above 5.08 VDC, the sensor or wiring is "open." If the voltage is less than 0.05 VDC, the sensor or wiring is shorted.The Duct Sensor Is Used For Sensing SupplyOr Return Air Temperatures. Location Of TheSensors Is Very Important In Order To ObtainAccurate Temperature Readings. TheFollowing Recommendations Should BeFollowed:When Used As A Supply Air Sensor TheSensor Should Be Mounted In The Supply AirDuct As Close To The HVAC Unit As PossibleAnd Upstream Of The Bypass Damper (IfUsed) For Best Results. For Best Accuracy,Apply Insulation On The Outside Of TheDuctwork Over The Sensor. This Will HelpThermal Gradients From Affecting The Sensor.Supply AirReturn AirWhen Used As A Return Air Sensor TheSensor Should Be Mounted In The Return AirDuct As Close To The HVAC Unit As PossibleAnd Upstream Of The Bypass Damper (IfUsed) For Best Results. For Best Accuracy,Apply Insulation On The Outside Of TheDuctwork Over The Sensor. This Will HelpThermal Gradients From Affecting The Sensor.See The Systems Installation And OperationManual For Other Design Considerations AndRecommendations Regarding DuctTemperature Sensor Location.Caution!Technical SpecificationsSensor Element: Type III Thermistor 10k ohm @ 77ºFAccuracy: ± 0.4º F between 40º F to 95º FRange: -30º F to 150º F |
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