Quick Start Guide

Step 4 - Label&DisconnectWires

1) Onebyone,applyalabel

designated to each wire

you disconnect from

your current thermostat.

TIP:Beforedisconnectinganywires,

take a photo of your current wire

conﬁguration with your mobile device.

Wire from the Install on the

old thermostat Function new thermostat Wire

terminal marked connector marked Color

 GorF Fan G

 Y1,Y Cooling/Compressor Y1

 W1,W Heating W1/0/B

 Rh,R,M,Vr,A Power R

C Common C

 O/B Rev.Valve W1/O/B*

 W2 2ndStageHeat W2

 Y2 2ndStageCooling Y2

 W3 3rdStageHeat W3

 OUT- OutdoorSensor SENSOR

 OUT+ OutdoorSensor SENSOR

*O/BisusedifyoursystemisaHeatPump.

NOTE:Iftheterminaldesignationsonyouroldthermostatdonotmatch

those on the new thermostat refer to sample wiring diagrams in the

full user’s manual at venstar.com in the support section.