Installation Tips - Honeywell RTH7400 Installation Manual

Installation Guide
Installation is easy—even if you've never done it before!
Your new thermostat has been designed for fast, easy installation.
Install in three simple steps
• Label wires and remove your old thermostat (see pages 4-5).
• Install and wire your new thermostat (see pages 6-14).
• Set your new thermostat to match your heating/cooling system
(see pages 15-24).

Installation tips

• Have everything you need ready to go before you begin (see page 3).
• Do not use wire color as a guide. Use wire labels instead (see page 7).
If you have installation questions, call 1-866-228-8942.
TURN OFF POWER at heating/cooling system (or fuse/circuit-breaker panel) before you
begin installation.
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