Honeywell T6 Pro Installation Guide

Conventional Systems Heat pump systems
Terminal Description Terminal Description
S/S
Input for a wired indoor,
outdoor sensor
S/S
Input for a wired indoor,
outdoor sensor
Y Compressor Stage 1 Y Compressor Stage 1
Y2 Compressor Stage 2 Y2 Compressor Stage 2
G Fan Relay G Fan Relay
C
24VAC Common wire
from secondary side of
cooling transformer (if 2
transformers)
C
24VAC Common wire
from secondary side of
cooling transformer
K*
Connect to K on C-wire
adaptor
K*
Connect to K on C-wire
adaptor
U/U** Relay for ventilation U/U** Relay for ventilation
A L/A
Connect to compressor
monitor
W Heat Stage 1 O/B
Changeover valve for
heat pumps
W2 Heat Stage 2 Aux Backup Heat
E Emergency Heat

Honeywell T6 Pro Specifications

General

Display	Touchscreen
Energy Star Certified	Yes
Power Source	Battery or Hardwired
Operating Modes	Heat, Cool, Auto, Off
Geofencing	Yes
Compatibility	Works with most HVAC systems
Fan Modes	Auto, On, Circulate
Remote Access	Yes
Energy Saving Features	Smart Response Technology
Connectivity	Wi-Fi
Warranty	5-year limited warranty