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RTH7400/RTH7500
1
Getting started
Installation tips ...........................................2
Pre-installation checklist ...........................3
Old thermostat removal
Remove old thermostat .............................5
Identify and label wires ..............................6
New thermostat installation
Wallplate mounting ....................................7
Wire connections .....................................10
Battery installation ...................................13
Thermostat mounting ..............................14
Time/date settings ...................................15
System setup
How to change settings...........................16
System settings ..................................17-23
Appendices
In case of difficulty...................................24
Customer assistance ...............................27
1-year limited warranty ............................28
Table of contents