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Attach Thermostat to Sub-Base

1.Lineupthethermostatbodywiththesub-base.

2.Carefullypushthethermostatbodyagainstthesub-baseuntilitsnaps

 intoplace.

3.Insertquickreferencecardintoslotontopofthermostat.

System Testing

Warning

Read Before Testing

• Donotshort(orjumper)acrossterminalsonthegasvalveoratthe

 heatingorcoolingsystemcontrolboardtotestthethermostatinstalla-

 tion.Thiscoulddamagethethermostatandvoidthewarranty.

• DonotselecttheCOOLmodeofoperationiftheoutsidetemperature

 isbelow50ºF(10ºC).Thiscouldpossiblydamagethecontrolledcool-

 ingsystemandmaycausepersonalinjury.

• Thisthermostatincludesanautomaticcompressorprotectionfeatureto

 avoidpotentialdamagetothecompressorfromshortcycling.When

 testingthesystem,makesuretotakethisdelayintoaccount.

NOTE: The compressor delay can be bypassed by pressing the reset button

on the front of the thermostat. All user settings will be returned to factory

default.

1 MovetheSYSTEMswitchtoHEATmode.

2 Presstoraisethesettemperatureaminimumof3degreesabove

thecurrentroomtemperature.Thesystemshouldstartwithinafew

 seconds.Withagasheatingsystem,thefanmaynotstartrightaway.

3 MovetheSYSTEMswitchtotheOFFmode.Allowtheheatingsystemto

 fullyshutdown.

4 MovetheSYSTEMswitchtotheCOOLmode.

5 Presstolowerthesettemperatureaminimumof3degreesbelow

thecurrentroomtemperature.Thesystemshouldstartwithinafew

 seconds(unlesscompressorshortcycleprotectionisactive–See

 noteabove).

6 MovetheSYSTEMswitchtotheOFFmode.Allowthecoolingsystemto

 fullyshutdown.

7 MovetheFANswitchtotheONmode.Thesystemfanshouldstart

 withinafewseconds.

MovetheFANswitchtotheAUTOmode.Allowthesystemfantoturnoff.

NOTE: The reset button must be pressed after making any changes to

these switches.

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Braeburn 2020NC Detailed Installer Guide

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