In orderto setyour thermostatup asa humidity controller,you will needat leastone(up to four for averaging) temperature/humiditysupportmodule(s)wired to the thermostat.
Locatethe temperature/humiditysupportmodulein the areathat you want to control humidity. Setthe T3tr4 sensor(Humidity) Input to "Control" by moving the # 4 dipswitchto the "on" position. Up to four T3/ T4 humidity sensorscanbe setto control andthe reportedvalueswill be averagedanddisplayed on thethermostat.Important: ~ of the temperature sensorsconnectedto this thermostat can be set to control becausea control temperature input to tbe thermostat will override a control bumidity input. Make sure all temperature sensorsare set to "Monitor".
OncedIe humidity control sensor(s)havebeenwired to dIe dIermostat,dIethermostatdisplaywill changeto indicate% RH insteadof °F/oC. ThedIermostatmodeselectionswill also changeto reflect humidity control. The modeswill be "Humidify", "Dehumidify", "Humidify or Dehumidify" and "Off'. Humidification/Dehumidificationsetpointsarechanged dIe sameway dIat temperaturecontrol setpointswould be
changed.
Mode of Ol2erationSetto "Humidify"
The B terminal is continually energizedin the "Humidify" mode. Whenthe thermostatcalls for humidity, dIe WI/HUM terminalwill energize.If the minimum off time of2 minutes hasnot elapsedsincethe previouscall, no terminalswill energizeuntil it has. All energizedterminalswill remain energizedfor the minimum on time of2 minutes.
Modeof Qi2erationSetto "Dehumidify"
Thea tenninal is continually energizedin dIe "Dehumidify" mode. Whenthe thermostatcalls for dehumidification,dIe YI/DEHUM terminalwill energize.IfdIe minimum off time of
4minuteshasnot elapsedsincethe previouscall. no terminals will energizeuntil it has. All energizedterminalswill remain energizedfor the minimum on time of 4 minutes.
Heat Pump Applications
If the sensoris beingusedwith a heatpumpthermostatwidI auxiliary heat,the thermostatcanbe configuredto disablethe useof auxiliary heatduring warm weatherandto lock out the compressorwhendIe outdoortemperatureis too cold. This allows for the mostefficient useof energy.
At warmertemperatures,a heatpumpwill operatemuchmore efficiently thanthe auxiliary heat. It cansaveenergyto disable auxiliary heatin somecases,for example,whenreturningfrom a setbackon a mild day. Thetemperatureabovewhich auxiliary heatis disabledis the auxiliary lockouttemperatureor high balancepoint. Referto the thermostatusermanualfor a detailedexplanation.
Configurethe temperaturesensor(TIm) that you areusingto senseoutdoortemperatureto the "Monitor" modeby settingthe dipswitch3 to the "off' position andthe moduleaddressto numberI. Thehigh andlow balancepoints aresetat the thermostat.Referto thethermostatInstallationInstructionsfor moredetails.
Troubleshooting
Thermostat has no display: Check24 VAC supply. Check for incorrectwiring betweenthe thermostatandsupportmodule. Incorrectwiring candamagethe thermostatandtransformeror blow a fusein the equipment.Make sureall supportmodules havea uniqueaddress.
Thermostat displays very high temperature or humidity: Ensurethat dipswitch6 is setproperly. If dipswitch 6 is setto Tim anda sensorhasnot beenwired to the Tim terminal,no temperatureor humidity readingswill be displayed. Also, if dipswitch6 is setto onboardanda sensorhasbeenwired to the Tim terminal,incorrecttemperaturereadingswill be displayed. Checkwires on remotesensors(flush mountor outdoor/duct)to ensurethatthey arenot touching. If they are, separatethem.
Thermostat displays very low temperature: Remotesensor (flush mountor outdoor/duct)is not connectedto support moduleproperly. Checkwiring.
Thermostat doesn'tdisplay remote temperature/humidity: Make surethatthe supportmoduleis setto address1. Reset supportmoduleafterchangingany dipswitchesby turning off
powerfor 15seconds.
Thermostat displays RH insteadof of or of instead of RH : Makesurethatmonitor/controldip switchesaresetcorrectly. Resetsupportmoduleafter changingany dipswitchesby turning off power for 15seconds.
Specifications
Power Supply: 18to 30 VAC or DC (24 V Nominal)
Maximum Relative Humidity: 90%
Max. Cable Length BetweenModule and TSTAT: lOOOft Themaxinlumcumulativedistancebetweenmultiple support modulesandthe thermostatis 1000ft.
Max. Cable Length BetweenModule and Remote Temp. Sensor: 300ft
Temperature
Accuracy:
ComfortRange(60°F- 80°F): :t: 1°F
MaximumDisplay Range:
Humiditv
Accuracy:
ComfortRange(10% - 45%): :f:3%
ControlRange(10% - 90%): :f:5%
Maximum DisplayedRange:0% - 900/0
B2202777
