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Orbit 83521 User Manual

Orbit 83521
45 pages
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Clear Comfort
®
Pro
7-day Programmable
Thermostat
User Guide
Model 83521
IMPORTANTMake sure to label your wires with
the included wire labels before removing your old
thermostat (see page 8).
We also recommend taking a picture of the current
wiring before disconnecting.
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Orbit 83521 Specifications

General IconGeneral
Stages1 Heat/1 Cool
DisplayDigital
TypeProgrammable
Power SourceBattery
Temperature Range40°F - 90°F
CompatibilitySingle Stage Systems
MountingWall

Summary

Introduction and Quick Start Guide

Easy 1-2-3 Operation

A simplified, step-by-step guide for initial thermostat setup and operation.

Display Screen Overview

Explains the various icons and information displayed on the thermostat screen.

Before You Begin Installation

Details essential preparation steps and tools needed before installing the thermostat.

Thermostat Installation

Labeling and Mounting

Covers labeling wires and mounting the thermostat base to the wall.

System Wiring

Detailed instructions for wiring conventional, heat pump, and less common systems.

Jumper Settings and Finalizing

Guide to setting jumpers and completing the thermostat installation.

Temperature Format and Reset

Temperature Format Settings

How to switch the temperature display between Fahrenheit (°F) and Celsius (°C).

Reset Button Functionality

Explains how to use the reset button to restore factory default settings.

Advanced System Setup

Temperature Offset

Adjusts the temperature display to match other devices.

Early Start Functionality

Allows the system to turn on before the programmed time.

Thermostat Operation and Programming

Setting Time, Day, Mode, and Fan

How to set the time, day, operating mode (heat/cool), and fan settings.

Schedule Management

Setting, modifying, and copying programmed daily schedules for energy efficiency.

Overriding Schedules

Instructions for temporary adjustments and permanent hold settings.

Maintenance and Troubleshooting

Battery Replacement

Guide on when and how to replace the thermostat's batteries.

Troubleshooting Common Issues

Solutions for common problems like no system activation or incorrect temperatures.

Customer Assistance and Warranty

Contact information for technical help and warranty details.

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