Honeywell RTH7400 - Manuel (Page 2)

69-2487EF—01 ii
Advanced Installation Guide
Installation is Easy
Label wires and remove your old thermostat
Install and wire your new thermostat
Set your new thermostat to match your heating/cooling
system
– This thermostat works with virtually all System
Types
– It is preset for the most common system
We are here to help.
Call 1-800-468-1502 for
wiring assistance before
returning the thermostat to
the store.