Braeburn 1020 Detailed Installer Guide

3
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)
 O   Output ReversingValve(CoolActive)
 B   Output ReversingValve(HeatActive)
 Y1   Output CompressorRelay
 G   Output FanControl
 W1   Output ConventionalHeatRelay
 C   Input 24VoltACTransformerCommon
Connect Your Wires
3
Wiring Terminations
Terminal Function Description
W1/E   Output (W1)1stStageConventionalHeat
(E)EmergencyHeatRelay
  Y2   Output 2ndStageConventionalCoolingCompressor
  W2   Output 2ndStageHeat/AuxiliaryHeat
Additional Terminations (1220 only)
Heat Only or Millivolt
Set Installer Switch to CONV
Rh PowerConnection
W1 HeatRelay(appearsasW1/Eon1220)
1 HEAT / 1 COOL Single or Dual Transformer
Set Installer Switch to CONV
Rh 24VoltACPower(heatingtransformer)[note 2]
Rc 24VoltACPower(coolingtransformer)[note 2]
W1 HeatRelay(appearsasW1/Eon1220)
Y1 CompressorRelay
G FanRelay
C 24VoltACTransformerCommon[note 1, 3]
Typical Wiring Configurations
NOTE: The “Installer Switch” option will be configured in the next step.
Conventional Systems

Braeburn 1020 Specifications

General

Brand	Braeburn
Model	1020
Category	Thermostat
Language	English