OWNER’S GUIDE
® U.S. Registered Trademark • Patents Pending
Copyright © 2004 Honeywell International Inc.
All Rights Reserved 69-1676—1
CT8775A,C

THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS

CT8775A Heat Only Thermostat (20 to 30 Vac) and
CT8775C Heating-Cooling Thermostat (20 to 30 Vac)
Para obtener un documento con las instrucciones en español, por favor visite
nuestro sitio de web a: www.honeywell.com/yourhome.
Pour obtenir des notices techniques en français, veuillez consulter notre site web
www.honeywell.com/yourhome.

Contents

Step 1. Prepare for Installation .................................................................................................................................. 3
Step 2. Remove Old Thermostat ............................................................................................................................... 4
Step 3. Special Installations........................................................................................................................................ 4
Step 4. Label Thermostat Wires................................................................................................................................. 5
Step 5. Separate Wallplate from Thermostat.............................................................................................................. 5
Step 6. Mount Decorator Cover Plate and Thermostat Wallplate............................................................................... 5
Step 7. Wire Wallplate Terminals................................................................................................................................ 8
Step 8. Customize the Thermostat............................................................................................................................. 10
Step 9. Mount the Thermostat.................................................................................................................................... 11
Step 10. Set the System and Fan Switches............................................................................................................... 12
Step 11. Operating the Thermostat............................................................................................................................. 13
Step 12. Check Operation of Heating and/or Cooling System................................................................................... 13
If You Have A Problem............................................................................................................................................... 15
Wiring Diagrams......................................................................................................................................................... 16