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Honeywell RTH7400 - Installation Tips; Getting Started

Honeywell RTH7400
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Installation Guide
69-2104ES—01 2
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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