4
Terminal Function Description
R Input PowerConnection(24VoltACHeating
TransformerorMillivoltPowerSource)
G Output FanControl
W1 Output ConventionalHeatControl
V3 Output ZoneValvePowerClose
C Input 24VoltACTransformerCommon
Connect Your Wires
3
Wiring Terminations
Heat Only or Millivolt
R PowerConnection
W1 HeatRelay
G FanControl [note 3]
C 24VoltACTransformerCommon[note 2]
Typical Wiring Configurations
Conventional Systems
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