UNP310 Install Guide

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3.Labelthatwirewiththecorrespondingletterinthethirdcolumn

4.Disconnectthelabeledwirecarefully,andproceedtothenextwireuntilallwiresarelabeled

Pleasenotethatnotallterminalsmaybeusedandthatthere’snostandardcolorcodeforthermostatwires,soyour

wirecolorsmayvary.Foryourreference,we’veincludedaterminallabelreferencechartbelowtohelpyouconnect

the wires from your old thermostat to your new thermostat in case you get stuck.

Terminal labeling reference chart

If your current

terminal has the

following letter

Writedownthat

letter here

Label the wires with

the following letters

Terminal function

RH,R,R5,5 RH 24VPower(Heating)

RC RC 24VPower(Cooling)

C, X, B*

CommonWire

W,W1,W/E,

Aux/E,E

W/E

1stStageHeat(forconventionalsystem);1st

StageAuxiliaryHeat(forheatpumpsystem)

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Install Guide - Page 9