Toptech TT-N-411 - Connect Your Wires

2
Connect Your Wires
3
Heat Only or Millivolt
Set Installer Switch to NORM
Rh*  PowerConnection
W HeatRelay(appearsasW1/EonTT-N-421)
G FanRelay[note 4]
C 24VoltACTransformerCommon[note 1]
1 HEAT / 1 COOL Single or Dual Transformer
Set Installer Switch to NORM
Rh* 24VoltACPower(heatingtransformer)[note 2]
Rc* 24VoltACPower(coolingtransformer)[note 2]
W HeatRelay(appearsasW1/EonTT-N-421)
Y CompressorRelay(appearsasY1onTT-N-421)
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
*AppearsasRonTT-N-421(singletransformer)
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 / 1 COOL Single Transformer (TT-N-421 Only)
Set System Type to NORM
R 24VoltACPower
W1 HeatRelayStage1
W2 HeatRelayStage2
Y1 CompressorRelayStage1
G FanRelay
C 24VoltACTransformerCommon[note 1]