Friedrich RT6 User Manual

Configuration Mode Settings
ThesetupscreensforCongurationModeareasfollows:
5. Staged Off Outputs(For HP 0 only)
 Selectwhethertheoutputsforheatingandcoolingarestagedoffindependentlyorare
satisedsimultaneously.
 1=outputsstagedoffindependently
 0=outputsoffsimultaneously
 Presstheupordownbuttontoset.
 Presstheright buttontoadvancetothenextscreen.
4. 2
nd
Stage Temperature Differential(1°Fto5°F)(0.5°Cto2.5°C)(For HP 0 only)
 Setthenumberofdegreesbetweenwhenstage1turnsonandwhenstage2turnson.
 Presstheupordownbuttontosetdifferentialvalue.
 Presstheright buttontoadvancetothenextscreen.
3. 1
st
Stage Temperature Differential(1°Fto5°F)(0.5°Cto2.5°C)
Setthenumberofdegreesbetweenyour“setpoint”temperatureandyour“turnon”
temperature.
 Presstheupordownbuttontosetdifferentialvalue.
 Presstheright buttontoadvancetothenextscreen.
2. Temperature Scale (ForC)
ChooseFahrenheitorCelsius.
 Presstheupordownbuttontoselect.
 Pressthe
right buttontoadvancetothenextscreen.
1. System–Setforheatpump,non-heatpump,reversingvalveoperation
Operating Modes
TherearethreepossibleoperatingmodesfortheRT6.Off,Heat,andCoolmodesareaccessedbypressingthe
SYS(left)button.
OFF Mode
• Inthismode,thethermostatwillnotturnontheheatingorcoolingdevices
Note:The indoor fan can be turned on manually in every operating mode by
pressing the FAN (right) button. The word FAN shows on the display and
the fan icon
appears when the fan operates.
OFF
Heat Mode
• Inthismode,thethermostatcontrolstheheatingsystem.Whentheheatoutputs,
theameicon
apprearsonthedisplay.
Note:For heat pumps, there is a four minute delay for your compressor to
restart after it has turned off. To bypass the compressor time delay, go to
OFF mode for 5 seconds.
Cool Mode
• Inthismode,thethermostatcontrolsthecoolingsystem.Whenthecooling
outputs,thesnowakeicon apprearsonthedisplay.
Note:There is a four minute delay for your compressor to restart after it has
turned off. To bypass the compressor time delay, go to OFF mode for 5
seconds.
LIAF126
FriedrichAirConditioningCo.
PostOfceBox1540•SanAntonio,Texas78295-1540
4200N.PanAmExpressway•SanAntonio,Texas78218-5212
(210)357-4400•FAX(210)357-4480
www.friedrich.com
6. Auxiliary Delay ON–(0-30minutes)(For HP 0 only)
 Setthedelaytimeinminutesforauxiliaryheattobelockedoutafteracallforsecond
stage.Thisextrasavingsfeatureisusedtotemporarilylockoutauxiliaryheatdevices,
allowingjustheatpumptotrytosatisfyheatcall.
 Presstheupordownbuttontoselect.
Press theright buttontoadvancetothenextscreen.
Mode of Operation
TheRT6isa1-stageor2-stageheatthermostat.Itfunctionswithairconditioning,heatpumps,orelectricheat
systems.
Thethermostatactivatestheheatingappliancewhentheroomtemperatureisbelowthesetheattemperature
(bythedifferentialtemperature).TheRT6willstopoutputtingwhenthecallforheathasbeensatised.With
heatpumps,thethermostatwillnotletthecompressorcomeonfor4minutesafteritturnsoff.Thisprotectsyour
compressor.
Whentheroomtemperatureisgreaterthanthesetcooltemperature(bythedifferentialtemperature),thecooling
deviceisactivated.TheRT6willstopoutputtingwhenthecallforcoolingissatised.Thethermostatwillnotletthe
compressorcomeonfor4minutesafteritturnsoff.Thisprotectsyourcompressor.
TheRT6hasthreepossibleoperatingmodes:OFF,Heat,andCool mode.Inoffmode,thethermostatwillnotturn
onheatingorcoolingdevices.Themanualfancanbeturnedoninalloperatingmodesusingthefanbutton.Inheat
mode,thethermostatcontrolstheheatingsystem.Inthecoolmode,thethermostatcontrolsthecoolingsystem.
7. Maximum Heat Setpoint(45°Fto90°F)(7°Cto32°C)
 Adjusttocontrolthemaximumheatsettemperatureallowed.
 Presstheupordownbuttontoselect.
 Presstherightbuttontoadvancetothenextscreen.
8. Minimum Cool Setpoint(45°Fto90°F)(7°Cto32°C)
 Adjusttocontroltheminimumcoolsettemperatureallowed.
 Presstheupordownbuttontoselect.
 Presstherightbuttontoadvancetothenextscreen.
9. Room Temperature Offset(+9°Fto-9°F)(+4.5°Cto-4.5°C)
 Adjusttocalibratedisplayedroomtemperaturetomatchactualroomtemperature.

Note:When not set to 0, will display.
 Presstheupordownbuttontoselect.
 Presstherightbuttontoadvancetothenextscreen.
Button Functions
UP–Usedtoincreasethesettemperaturesandtoadjustcongurationsettings.
DOWN–Usedtodecreasethesettemperaturesandtoadjustcongurationsettings.
SYS (left)–UsedtochangefromOFF,HEAT,andCOOLmodes
FAN (right)–Usedtoturnonandofftheindoorfan.
SYStem(left)
FAN(right)
Downbutton
Upbutton
Heat Set Point
• UsetheSYSbuttontoselectHeatMode.Presstheupordownbuttontoviewthe
currentheatsetpointlargeronthedisplay.Whenthelargesetpointisdisplayed,
theHEATiconwillblink.Theupordownbuttonscanbeusedtoadjusttheset
point.After5secondsofinactivitythescreenwilldisplaytheroomtemperatureand
theHEATiconwillnotblink.
HEAT icon will blink.
Cool Set Point
• UsetheSYSbuttontoselectCoolMode.Presstheupordownbuttontoviewthe
currentcoolsetpointlargeronthedisplay.Whenthelargesetpointisdisplayed,
theCOOLiconwillblink.Theupordownbuttonscanbeusedtoadjusttheset
point.After5secondsofinactivitythescreenwilldisplaytheroomtemperatureand
theCOOLiconwillnotblink.
COOL icon will blink.
Set Point Adjustment
Troubleshooting
Symptom Remedy
Nodisplay Checkfor24VACatthermostat;displayisblankwhen24VACisnot
present
Allthermostatbuttonsareinoperative Verify24VACispresent;unitlocksoutwhen24VACisnotpresent
Noresponsewithrstbuttonpress Firstbuttonpressactivatesbacklightonly
Thermostatturnsonandofftoo
frequently
Adjusttemperaturedifferential
(seeCongurationModeSettings3&4)
Fanrunscontinuously PressFAN(right)buttontoturnfanoff
Roomtemperatureisnotcorrect Calibratethermostat(seeCongurationModeSetting10)
HeatorCoolnotcomingon Verifywiringiscorrect,gentlypulloneachwiretoverifythereisagood
connectionatterminalblock
HEATblinking Inheatsetpointscreen,thisisnormaloperation
COOLblinking Incoolsetpointscreen,thisisnormaloperation
Problemnotlistedabove PressResetbuttononce*
* Reset Button Function: Display is refreshed, conguration settings are unchanged.
Testing the Thermostat
Oncethethermostatiscongured,itshouldbethoroughlytested.
 CAUTION! : Donotenergizetheairconditioningsystemwhentheoutdoortemperatureisbelow50
degrees.Itcanresultinequipmentdamageorpersonalinjury.
Heat Test
1.PressSYS(left)buttonuntilheatmodeisdisplayed.
2.Adjustthesettemperaturesoitis5degreesabovetheroomtemperature.
3.Heatshouldcomeonwithinafewseconds.
4.Adjustthesettemperature2degreesbelowtheroomtemperatureandtheheat
shouldturnoff.Theremaybeafandelayonyoursystem.
Note: Forheatpumps,thereisafour-minutedelaytoprotectyourcompressorafteritturnsoff.Tobypassthe
compressortimedelay,gotoOFFmodefor5seconds.
Fan Test
1. PressFAN(right)button.Fandisplays.IndoorfanturnsON.
2. PressFAN(right)button.IndoorfanturnsOFF.
OFF
Cool Test
1. PressSYS(left)buttonuntilcoolmodeisdisplayed.
2. Adjustsettemperaturesoitis5degreesbelowroomtemperature.
3. A/Cshouldcomeonwithinafewseconds.
4. Adjustthesettemperature2degreesabovetheroomtemperatureandtheA/C
shouldturnoff.Theremaybeafandelayonyoursystem.

Note: Thereisafour-minutetimedelaytoprotectthecompressorafterit.Tobypassthecompressortime
delay,gotoOFFmodefor5seconds.
 Presstheupordownbuttontoselect.
 Presstherightbuttontoadvancetothenextscreen.
System Setting Reversing Valve Setting Friedrich Models
Heat Pump HP O-EnergizedinCooling
PDH(PTHP) Only
Heat/Cool and Single-Stage
Heat Pump Only
ELC N/A VEA,PDE(PTAC),Kuhl+

Friedrich RT6 Specifications

General

Brand	Friedrich
Model	RT6
Category	Thermostat
Language	English