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INTRODUCTION
Thank you for purchasing
your new Comfort-Set
®
90
Series thermostat. Your new
White-Rodgers Thermostat
uses solid state micro-
computer technology to
provide precise time/tem-
perature control. This ther-
mostat offers the flexibility
to design heating and cooling
programs that fit your needs.
Adaptable to most 24 volt
light commercial forced air,
multistage or heat pump
systems with electric or
fossil fuel auxiliary.
You will find information
about thermostat buttons and
display in the component
section beginning on page 2.
Instructions for optional
Introduction
Orientation
Configuration
Programming
Features
Index
thermostat configuration
begin on page 4. Program-
ming information begins on
page 7. Descriptions of the
thermostat’s features begin
on page 11.
We have also added thumb
tabs to help you find sections
of the manual.