13 Installer Guide
16 AC Power Interrupt Warning [note 6]–Whenenabled,thethermostatwilldisplayanoutagewarning
whenACpowertothethermostatislost.
17 Short Cycle Protection–Selectsthenumberofminutesthecoolingcompressorwillbelockedoutafter
turningoff.Thisshortcycleprotectionisalsoactiveintheheatmodeifaheatpumpsystemwasselectedin
Option6.
18 Residual Cooling Fan Delay–Selectsadelayforthesystemfanafterthecoolingcompressorhasturned
off.Thisdelaywillhelpremovetheremainingcoolairoutoftheductworkprovidingadditionalefciency.
19 Circulating Fan Lock–Whenenabled,theonlyuserfanoptionsavailableareONandCIRC(Circulation).
TheAUTOoptionisnotavailablewiththisoptionenabled.
20 Adaptive Recovery Mode (early recovery) [note 7]–EnablesordisablestheARM
TM
(adaptiverecovery
mode)feature.DuringARM,roomtemperatureisrecoveredbyturningontheheatingorcoolingbeforethe
endofthesetbackperiod.Thesetpointtemperatureischangedtothatoftheupcomingprogramtemperature.
21 Indoor Remote Sensor Control [note 8]–IfaBraeburn
®
indoorremotesensorisconnectedduring
installation,thethermostatwillautomaticallydetectthesensor.Whenanindoorsensorisdetected,youmay
selectbetweenthermostatonly(ISENS),remotesensoronly(ESENS)orcombiningthethermostatandthe
remotesensor(ASENS).NOTE: This option does not apply to a Braeburn outdoor sensor. When an outdoor
sensor is connected the thermostat automatically recognizes it and no further configuration is necessary.
22 Lockout Security Level–Selectsthelevelofkeypadlockoutwhenthethermostatislocked.Level2locks
theentirethermostat(includingthefrontresetbutton).Level1lockseverythingexcepttheSpeedBar
®
allowingforupanddowntemperatureadjustment.NOTE: The lock code is set in the User Settings mode
(see User Manual).
23 Humidification Mode (6400 only)–Selectsbetweendisablinghumidication(OFF),dependantcontrol
(DEP)orindependentcontrol(IND).TheDEPsettingcontrolshumidicationonlyduringacallforheating.
TheINDsettingallowshumidicationoutputintheheatmode,butdoesnotrequireacallforheating.
NOTE: It is recommended that the IND setting only be used with systems designed for low air temperature
humidification such as steam humidification. Always ensure the heat exchanger or other system parts are
not exposed to excess water from condensation or other sources. When there is any doubt, use the OFF or
DEP setting.
24 Auto Humidity Set Point Limit (6400 only) [notes 9, 11]–Selectbetweenturningtheautomatichumidity
setpointlimittoauto(AUTO)ormanual(MAN).WhenAUTOisselected,humiditycontrolisprovidedauto-
maticallybasedontheoutdoortemperature.SelectingMANallowsyoutomanuallycontrolthelevel
ofhumidity.
25 Dehumidification (6400 only)–Selectbetweenenabling(ON)anddisabling(OFF)dehumidicationcontrol
(Dterminal).Forusewithadehumidier.
26 Auto Changeover Dead Band [note 10]–Whenautochangeovermodeisenabledinoption5and
selected,thesystemautomaticallyswitchesbetweenheatingandcoolingwhentheroomtemperature
meetsthenormalcriteriaforeitheraheatingorcoolingcall.Thereisaforcedseparation(deadband)
betweentheheatingandcoolingsetpointssothatthesystemsdonotworkagainsteachother.This
optionselectstheamountofthisdeadbandindegreeswiththedefaultbeing3°F.
27 Compressor Balance Point [notes 4, 11]–Locksouttheuseofthecompressorheatstagewhenthe
outsideairtemperatureislessthantheselectedsettingof15°Fto50°F(-9°Cto10°C)
28 Auxiliary Heat Balance Point [notes 4, 11]–Locksouttheuseoftheauxiliaryheatstagewhenthe
outsideairtemperatureexceedstheselectedsettingof70°Fto40°F(21°Cto4°C).NOTE: This balance
point overrides the fossil fuel compressor lockout in option 14. If this option is set to gas and the outdoor
temperature is over the auxiliary balance point, the compressor will remain on during a call for auxiliary heat.
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