Braeburn 3020 - Thermostat and Display Overview

3 Installer Guide
Provide Power
C
24VAC Power Terminal (C)
2
Wiring Terminations for model 3020
Terminal Function Description
 Rc Input 24VoltACCoolingTransformer
   (DualTransformerSystemsOnly)
 Rh Input PowerConnection(24VoltACHeating
   TransformerorMillivoltPowerSource)
G Output FanControl
 W1 Output ConventionalHeatRelay
O/B/V3 Output (O)CoolActiveReversingValve   
   (B)HeatActiveReversingValve
    (V3)ZoneValvePowerClose
 Y1 Output CompressorRelay
 C Input 24VoltACTransformerCommon
 S1
 S2
Connect Your Wires
3
Input OptionalRemoteSensor(indoororoutdoor)
+
+
• For24VoltACpower,youmustconnectthecommonsideofthetransformertotheCterminalonthethermostatsub-base.In
 dualtransformerinstallations,thetransformercommonmustcomefromthecoolingtransformer.
• Forbatterypower,insertthe2supplied“AA”typealkalinebatteriesintothebatterycompartmentlocatedintherear
 housingofthethermostat.MakesuretopositionthePositive(+)andNegative(-)sidesofthebatteriescorrectlywith
 the+/-symbolsinthebatterycompartment.
Batteries Installed as Shown