Honeywell Home Lyric T6 Pro Wi-Fi Professional Install Manual page 3

Wiring UWP
Push down on the tabs to put the wires into the inner holes of their corresponding terminals
on the UWP (one wire per terminal) until they are firmly in place. Gently tug on the wires to
verify they are secure. If you need to release the wires again, push down the terminal tabs
on the sides of the UWP.
This wiring isjust an example,
yours may vary.
Terminal designations
Conventional Systems
Heat pump systems
Description I Terminal
Fan Relay
24VAC Common wire from
secondary side of cooling
transformer ( if 2 transformers)
Connect to K on Wire Saver
Module
Relay for ventilation
Heat Stage 1
Heat Stage 2
24 VAC Heating transformer
24 VAC Cooling transformer
Description
Input for a wired indoor,
outdoor sensor
Compressor Stage 1
Compressor Stage 2
Fan Relay
24VAC Common wire from
secondary side of cooling
I transformer
Connect to K on Wire Saver
Module
I Relay for ventilation
Connect to compressor
monitor
Changeover valve for heat
pumps
Backup Heat
Emergency Heat
I 24 VAC Heating transformer
24 VAC Cooling transformer
TheTHP904SA1023 Wire Saver Module is used on heac/cool systems when you only have four wires
el the thermostat and you need a fifth wire for a common wire. Use the K terminal In place of the Y and
G terminals on conventional or heat pump systems to provide control of .the fan and the compressor
through a single wlre-the unused wire then becomes your common wire. See THP9045 Instructions
for more information.
Ventilation is not available on all models. When the U stder is in the dov/n position (2 wires), the U
contacts are a dry set of contacts. If your ventilation system requires 24 volts, move the U slider to the
up posillon (1 wire). Lower U terminal is internally jumped to the Rc terminal. In this application, you
would hook up one wire from your damper to the upper U terminal and the other to the common side of
the transformer.