Braeburn 2220 User Manual

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1 HEAT / 1 COOL Single or Dual Transformer

Set Installer Switch to CONV

24VoltACPower(heatingtransformer)[note 2]

24VoltACPower(coolingtransformer)[note 2]

W1 HeatRelay(appearsasW1/Eon2220)

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

24VAC Power

Terminal (C)

NOTES - Conventional Systems

[1]Ifbatteriesareinstalledthe24VoltACcommonconnectionisoptional

[2]Removefactoryinstalledjumperfordualtransformersystems

[3]Indualtransformersystems,transformercommonmustcomefrom

 coolingtransformer

[4]Ifneededforsystem

Provide disconnect and overload protection as required.

2 HEAT / 2 COOL Single or Dual Transformer (2220 Only)

Set System Type to CONV

24VoltACPower(heatingtransformer)[note 2]

24VoltACPower(coolingtransformer)[note 2]

W1 HeatRelayStage1

W2 HeatRelayStage2

Y1 CompressorRelayStage1

Y2 CompressorRelayStage2 [note 4]

G FanRelay

C 24VoltACTransformerCommon[note 1, 3]

Heat Only or Millivolt

Set Installer Switch to CONV

 PowerConnection

W HeatRelay(appearsasW1/Eon2220)

G FanRelay[note 4]

C 24VoltACTransformerCommon[note 1]

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Braeburn 2220 Economy Model Thermostat