© 2016 Network Thermostat 240229-00 Occupancy Sensor HVAC Control 1. Install thermostat back plate and connect to network per thermostat installation instructions 2. Pull 4-conductor cable (or CAT5) from thermostat to occupancy sensor location and wire according to the diagrams below. a. Single Occupancy Sensor Connected to Thermostat b. Multiple Occupancy Sensors Connected to Thermostat In a daisy chain fashion, connect all 24V together and then all 24C together as shown. Daisy-chain from CLK2 to COM on the first sensor, then NC to the COM of the second sensor, etc. On the last sensor in the chain, connect the NC to CLK1 using the fourth conductor by connecting each segment with a wire nut as shown above. * NOTE: It may be required to add a separate (or larger) 24vac transformer to power more than one occupancy sensor. If so, thermostats and occupancy sensors must have the same 24VAC / 24V(c) polarity on all units. 75VA transformer recommended.
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©2016NetworkThermostat 240229-00
OccupancySensorHVACControl
1. Installthermostatbackplateandconnecttonetworkperthermostatinstallationinstructions
2. Pull4-conductorcable(orCAT5)fromthermostattooccupancysensorlocationandwireaccordingtothediagramsbelow.
a. SingleOccupancySensorConnectedtoThermostat
b. MultipleOccupancySensorsConnectedtoThermostat
Inadaisychainfashion,connectall24Vtogetherandthenall24Ctogetherasshown.Daisy-chainfromCLK2toCOMonthefirstsensor,thenNCtotheCOMofthesecondsensor,etc.Onthelastsensorinthechain,connecttheNCtoCLK1usingthefourthconductorbyconnectingeachsegmentwithawirenutasshownabove.*NOTE:Itmayberequiredtoaddaseparate(orlarger)24vactransformertopowermorethanoneoccupancysensor.Ifso,thermostatsandoccupancysensorsmusthavethesame24VAC/24V(c)polarityonallunits.75VAtransformerrecommended.
©2016NetworkThermostat 240229-00
c. EnsurebothjumpersareatpositionAandperformWalkByTestperoccupancysensorinstallation
instructions
NT-OSCCeilingMountSensorWalkByTestJumperSettings
NT-OSWWallMountSensorWalkByTestJumperSettings
3. UpdateOccupancySensorandthermostatforHVACcontrol
a. RecommendsetthermostatOverrideTimerto10minutes,orlonger.OverrideTimermustNOTbe0:00.(inconfigurationpage)
©2016NetworkThermostat 240229-00
4. UpdateOccupancySensorjumpersettingsforHVACcontrol
a. SetVerify(ON)(OccupancyDetection)tojumpersettingE(5minutes)
b. SetMinimumOccupied(OFF)(HVACRunTime)tojumpersettingsE(20minutes)orF(30minutes).
ThermostatoverridewillcontinuefordurationofMinOcc(OFF)time.
NOTES:WhenchangingOccupancySensorjumpersettings,recycleOccupancySensorpowerbyremovingandreattachingthethermostatfaceplate
5. Securecoveronoccupancysensor
6. SetdipswitchesonbackofthethermostatfaceplatetoturnoffAdaptiveRecovery(#2ON)ifdesired(but
notrequired)andengagetheLockout(#4ON)(required).
7. Placethermostatfaceplateonthermostatbackplate
8. SetOccupied&Unoccupiedschedulea. SetOccupiedscheduleto30minutesbeforeanticipatedoccupiedtime(orHVACruntimesothat
thespaceisatthedesiredoccupiedsetpoint).
b. SetanUnoccupiedscheduleto30minutesafteranticipatedoccupiedtime.UsesetbacksetpointsthatareeasyfortheHVACunittoobtainthedesiredoccupiedsetpointsduringnormaloccupiedhours.
OccupancyControlDipswitchSettings
©2016NetworkThermostat 240229-00
c. Seta2ndUnoccupiedscheduleto30minutesafternormaloccupiedhours.Usesetpointsthatwillmaximizeenergysavingsduringunoccupiedhours.
Summary:TheprecedinginstructionsconfiguredtheHVACequipmentforoccupancysensorcontrol.Thisscenarioassumesaclassroomsettingwithastarttimeof8:15.Theteacherarrivesat8amsopreconditioningbegins30minutespriorat7:30am.Iftheroomremainsunoccupied,theschedulesetstheHVACto“light”setback(unoccupied)modeat8:30am.Attheendoftheday,thethermostatwillsettheHVACintoa“heavy”setback(unoccupied)modeat5:30pm.
1. TheareawillbepreconditionedtotheOccupiedSetPoints(cool=74oF,Heat=68oF)beginning30minutespriortoanticipatedroomoccupancyof8am.
2. Ifnooccupancyisdetectedduringnormaloccupiedhours,theschedulewillsettheHVACequipmentintoUnoccupied(orlightsetback)mode(cool=78oF,heat=65oF)30minutesafteranticipatedroomoccupancyof8am.UsealightsetbacksuchthattheHVACunitcaneasilyreachdesiredoccupiedsetpointsduringnormallyoccupiedhours.
3. Ifnooccupancyisdetectedduringnormalunoccupiedhours,theschedulewillsettheHVACequipmentintoUnoccupied(orheavysetback)mode(cool=85oF,heat=60oF)30minutesafteranticipatedroomoccupancyof5pm.Useaheavysetbacktomaximizeenergysavingsduringnormallyunoccupiedhours.
4. Ifoccupancyisdetectedatanytime,theHVACequipmentwillcontinueconditioningtheareainOverrideusingthatlastrunOccupiedsetpointsforthedurationofroomoccupancy.
5. TheOverride(Occupied)modewillcontinueforamaximumof20minutesaftertheroomisvacated.
©2016NetworkThermostat 240229-00
6. IfthethermostatisinUnoccupiedMode,aminimumof6minutes(intheexample)ofcontinuousoccupiedtimeisnecessarybeforetheoccupancysensorwillplacethethermostatbackintoOverride(Occupied)Mode.
Notes:a. TheOccupancysensorwilltriggeranOverride(HVACconditionstoOccupiedsetpoints)whenthe
integratedoccupancysensorrelayOPENS.AnOverridewillconditionthespacetothelastrunoccupiedsetpoints.
b. ThethermostatmustrecognizethatanOccupancySensorisconnectedtotheCLK1&CLK2terminalsbydetectingashortbetweenCLK1&CLK2(i.e.theOccupancysensormustNOTdetectoccupancyatleastonetimewiththethermostatfaceplateONbeforethethermostatrecognizesthattheoccupancysensorisconnected).
c. Verify(ON)(occupancydetection)hasabuiltindelayof1minute.Thus,ifVerify(ON)issetto5
minutes,theOccupancySensorwillactivateanOverrideafter6minutesofcontinuousoccupiedtime.
d. Ifatimedelayrelayisbeingusedasadoorcontactorinconjunctionwiththeoccupancysensor,
ensurethattherelayisnormallyOPENwhenthedoorisclosed.
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