Braeburn 1220 - Heat Pump Systems

4
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]ConnectY2onlyifasecondcoolingcompressorisbeingused
Provide disconnect and overload protection as required.
2 HEAT / 2 COOL Single or Dual Transformer (1220 Only)
Set System Type to CONV
Rh 24VoltACPower(heatingtransformer)[note 2]
Rc 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]
Conventional Systems (cont.)
Typical Wiring Configurations
NOTE: The “Installer Switch” option will be configured in the next step.
Heat Pump Systems
1 HEAT / 1 COOL - No Auxiliary Heat
Set Installer Switch to HP
Rh 24VoltACPower
Rc ConnectedtoRhwithsuppliedJumperWire
O or B  ChangeoverValve [note 2]
Y1 CompressorRelay
G FanRelay
C 24VoltACTransformerCommon [note 1]
2 HEAT / 1 COOL - Including Auxiliary Heat (1220 only)
Set Installer Switch to HP
Rh 24VoltACPower
Rc ConnectedtoRhwithsuppliedJumperWire
O or B  ChangeoverValve[note 2]
Y1 CompressorRelay(1ststageheating/cooling)
W2 AuxiliaryHeatRelay(2ndstageheating)[note 3]
E EmergencyHeatRelay [note 3]
G FanRelay
C 24VoltACTransformerCommon [note1]