Honeywell Lyric T5 Guide D'installation Rapide page 6

Removing your old thermostat
1 Turn power OFF
To protect yourself and your equipment,
Turn off the power at the breaker box
or switch that controls your heating/
cooling system.
2 Check that your system is off
Change the temperature on your old
thermostat. If you don't hear the system
turn on within 5 minutes, the power
is off.
Note: If you have a digital thermostat
that has a blank display, skip this step.
3 Remove your old thermostat from the
wall plate
On most thermostats, you can take off
the thermostat by grasping and gently
pulling. Some thermostats may have
screws, buttons, or clasps.
Do not remove any wires from your
thermostat at this time!
Breaker box
75
ON
OFF
75
6
ON
OFF
OFF
Switch