T60xDFH-4 and T60xDFH-4+PIR Series Thermostat ... - Enviro-Tec

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Status Display MenuThe Status Display Menu is displayed during normalthermostat controller operation. This menucontinuously scrolls through the following parameters:• Room Temperature (All Models) and Humidity(T603DFH-4 and T605DFH-4 Models)Note: For models with dehumidification capability, thedefault setting is no humidity reading on the display(%RH disp parameter is set to off). The %RH dispparameter must be set to on to display the currenthumidity reading.• System Mode• Schedule Status(Occupied/Unoccupied/Override/Stand-By[PIR Models])• Applicable Alarms – The backlight lights up as analarm condition is displayed.Note: An option is available within the InstallerConfiguration Menu to lock out the scrolling display andshow only the Room Temperature parameter.Dehumidification Operation – T603DFH-4 andT605DFH-4 Thermostat Controller ModelsDehumidification activates when the room humidity isabove the adjustable humidity setpoint as sensed bythe integral humidity sensor.Note: Dehumidification operation functions only in theCooling mode; dehumidification operation does notfunction in either the Off or the Heating mode.The minimum deadband between the Heating andCooling setpoints is adjustable from 2.0F°/1.0C° to5.0F°/2.5C°, as defined by the Deadband parameter inTable 4. If the room temperature resides in thedeadband between the Heating and Cooling setpoints:• the thermostat controller forces the fan to lowspeed• the chilled water valve opens to the specifiedmaximum value set by CoolMax• the thermostat controller stages Heating tomaintain the room temperature at the Coolingsetpoint, as sensed by the thermostat controllerIf the room temperature falls below the result of theformula 1 + Cooling Setpoint – Deadband, then thethermostat controller disables dehumidificationoperation.If the thermostat controller is in Cooling demand:• the chilled water valve opens to 100%• the thermostat controller stages Heating tomaintain the room temperature at the Coolingsetpoint, as sensed by the thermostat controllerIf the thermostat controller is in Cooling demand andthe room temperature rises 2F°/1C° above the Coolingsetpoint, the thermostat controller automaticallydisables dehumidification operation. Likewise, if thethermostat controller is in Cooling demand and theroom temperature falls below the current Heatingsetpoint, the thermostat controller disablesdehumidification operation.Occupancy Sensor Operation –T60xDFH-4+PIR Series Thermostat ControllersA T60xDFH-4+PIR Series Thermostat Controller (or aT60xDFH-4 Series Thermostat Controller equippedwith a PIR accessory cover) provides advancedoccupancy logic.Note: The PIR strategy is an occupied strategy. If thethermostat controller is programmed to be Unoccupied,the PIR function does not have an effect on theoccupancy strategy.The thermostat controller automatically switchesoccupancy levels from Occupied to Stand-By andUnoccupied as required, when local movement issensed.Occupancy sensing is enabled only if a PIR cover isinstalled on the thermostat controller (PIR models) or ifa remote input is configured as a remote PIR sensor(MotionNO or MotionNC).PIR Warm-Up PeriodWhen a PIR cover is used and a thermostat controlleris powered up, there is a 1-minute warm-up periodbefore any local movement can be detected andacknowledged by the PIR sensing device. The localstatus LEDs for the PIR function are not active, and thesensor is in Stand-By mode for the 1-minute period.The PIR functionality and local movement status LEDsare activated after the 1-minute warm-up period haselapsed after the initial powering of the thermostatcontroller. If movement is present, the mode changesto Occupied.PIR Diagnostic LEDsThe diagnostic LEDs inside the PIR lens brighten whenmovement is detected within the first 30 minutes afterpowerup. The LEDs do not light up or brighten after theinitial 30-minute period.8T60xDFH-4 and T60xDFH-4+PIR Series Thermostat Controllers with Dehumidification and OccupancySensing Capability Installation Instructions
SetpointsThe Stand-By setpoints are under the same limitationsand restrictions as the Occupied and Unoccupiedsetpoints. Stand-By setpoints reside between thecorresponding Occupied and Unoccupied setpointvalues.The installer must be certain that the differencebetween the Stand-By and Occupied values can berecovered within a timely fashion to ensure occupancycomfort. In addition, the difference between the twovalues must be large enough to warrant maximumenergy savings.Unocc Heat= 65°FSt-By Heat= 69°FOcc Heat= 72°FOcc Cool= 75°FSt-By Cool= 78°FRoom TemperatureFIG:rm_tmpFigure 11: Increasing Room Temperature SetpointsHotel and lodging applications can benefit from theaddition of an entry door switch wired to one of thebinary inputs of the thermostat controller. When a doorcontact is used and configured, the Stand-By timer andits configuration are no longer active or used. Theoccupancy toggle between Occupied and Stand-By isthen dictated by both the door contact and thePIR sensing device used. If movements are detectedby the PIR sensor and the door is closed, the room isconsidered occupied. The thermostat controllerswitches back to Stand-By mode only if the door switchtoggles open/closed. Motion is ignored when the doorswitch indicates an open door.PIR occupancy functionality is dictated by both theStand-By timer and Unoccupied timer configurationvalue and movements present in the area.Unoccupied Timer DisableIt might be preferable for the local area to stay out ofUnoccupied mode and always stay at the Stand-Byoccupancy level when no activity is present. Ininstances when areas always need to be on Stand-Bystatus, ready to respond to demand at any given pointin time, we recommend disabling the Unoccupied timer.When the local PIR occupancy routine is running at thethermostat controller, the zone drifts into Unoccupiedmode when the Unoccupied timer is set above itsfactory default value of 0.0 hours.OccupiedStand-By= 2 HoursStand-By= 2 HrsStand-ByUnoccupiedUnoccupied Time= 6 HoursUnoccupied Time= 6 HoursFirst MovementDetected by PIR DeviceLast Movement Detectedby PIR DeviceTimeStand-By Time Elapsed= Stand-By ModeUnoccupied Time Elapsed= Unoccupied ModeFirst MovementDetectedby PIR DeviceLast Movement Detectedby PIR DeviceTimeStand-By Time Elapsed= Stand-By ModeFIG:unocc6sb2Figure 12: Unoccupied Timer Set to 6 Hours and Stand-By Timer Set to 2 HoursT60xDFH-4 and T60xDFH-4+PIR Series Thermostat Controllers with Dehumidification and OccupancySensing Capability Installation Instructions9
Page 4 and 5: Table 1: Terminal Identification (S
Page 6 and 7: BO224 V~Hot24 V~ComN.C.CoolingValve
Page 10 and 11: OccupiedStand-By= 2 HrsStand-By= 2
Page 12 and 13: Cooling SetpointOnDevice OpenedOnRe
Page 14 and 15: Table 4: Installer Configuration Me

T60xDFH-4 and T60xDFH-4+PIR Series Thermostat ... - Enviro-Tec

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