Honeywell CT3500 User Manual

OWNER’S GUIDE
® U.S. Registered Trademark
© 2004 Honeywell International Inc.
All Rights Reserved
69-1199—4
Honeywell CT3500/CT3595
PROGRAMMABLE THERMOSTAT
Weekday, Saturday and Sunday
Programmable Heat and/or Cool
Low Voltage (20 to 30 Vac) Thermostat and Wallplate
Model CT3500/CT3595
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Table of Contents
Step 1. Prepare for Installation................................................................................................................................................ 5
Step 2. Remove Old Thermostat............................................................................................................................................. 6
Step 3. Mount Thermostat Wallplate....................................................................................................................................... 7
Step 4. Wire Wallplate Terminals ............................................................................................................................................ 8
Step 5. Install the Batteries ..................................................................................................................................................... 9
Step 6. Set Fan Operation Switch........................................................................................................................................... 10
Step 7. Mount the Thermostat ................................................................................................................................................ 11
Step 8. Customize Your Thermostat ....................................................................................................................................... 11
Step 9. Set the Clock .............................................................................................................................................................. 13
Step 10. Programming ............................................................................................................................................................ 14
Step 11. Operating Your Thermostat....................................................................................................................................... 17
Step 12. Set the Fan and System Switches............................................................................................................................ 18
If You Have a Problem ............................................................................................................................................................ 19
Smart Response™ Technology .............................................................................................................................................. 21
Wiring Diagrams ..................................................................................................................................................................... 22

Honeywell CT3500 Specifications

General

Programmability	7-Day Programmable
Stages	1 Heat/1 Cool
Display Type	LCD
Hold Feature	Yes
Filter Change Indicator	Yes
Color	White
Product Type	Thermostat
Power Source	Battery

Summary

Prepare for Installation

Remove Old Thermostat

Special Installations

Guidance for unique situations when replacing a thermostat.

Mount Thermostat Wallplate

Wire Wallplate Terminals

Install the Batteries

Set Fan Operation Switch

Mount the Thermostat

Customize Your Thermostat

System Type Configuration

Configure the thermostat's system type setting for accurate operation.

Smart Response Technology Settings

Adjust settings for the Smart Response technology feature.

Temperature Format Options

Select between Fahrenheit (°F) or Celsius (°C) temperature display.

Set the Clock

Programming

Operating Your Thermostat

Set the Fan and System Switches

Troubleshooting Common Issues

Smart Response Technology Explained

Wiring Diagrams

2-Wire Heat-Only Wiring

Wiring diagram for a 2-wire heat-only system.

4-Wire Heat/Cool Wiring

Wiring diagram for a 4-wire heat/cool system.

3-Wire Heat Only with Fan Wiring

Wiring diagram for a 3-wire heat-only system with fan.

4-Wire Single-Stage Heat Pump Wiring

Wiring diagram for a 4-wire single-stage heat pump.

Limited One-Year Warranty