Honeywell CT40A Owner's Manual - Page 1

CT40A Heating Thermostat INSTALLATION INSTRUCTIONS 1 Prepare for Installation To correctly install your Honeywell thermostat, follow these step-by-step instructions. It is recommended that as you read, understand and complete each step, you check it off. If you are unsure about wiring procedures, be sure to call a qualified service technician for assistance. ❑ Check thermostat suitability for your home system by reviewing the introductory paragraph. ❑ Assemble tools required as shown in Fig. 1. Do-It Yourself Models For 24 Vac, Heat-Only Systems The CT40A Heating Thermostat replaces most 24 Vac, 2-wire heating system thermostats. It is suitable only for gas or oil heating systems or for electric heating systems that control the fan. The CT40A is not suitable for air conditioning, heating/air conditioning, heat pump or line voltage systems. MERCURY NOTICE If this control is replacing a control that contains mercury in a sealed tube, do not place your old control in the trash. Contact your local waste management authority for instructions regarding recycling and the proper disposal of an old control containing mercury in a sealed tube. FLAT BLADE SCREWDRIVER HAND OR POWER DRILL WITH 3/16 INCH DRILL BIT, IF NEEDED TO DRILL HOLES IN WALL WIRE CUTTER/STRIPPER OR SHARP KNIFE, IF NEEDED TO STRIP WIRES SPIRIT LEVEL, IF NEEDED TO LEVEL THERMOSTAT FOR APPEARANCE M7337 Fig. 1. Assemble required tools. ❑ Be sure your heating system is working, especially if inoperative for a length of time. If the heating system does not work, contact your local heating dealer for assistance. ❑ Carefully unpack your new thermostat. Discard the cardboard insert protecting the snap switch contacts. ❑ Save the package of screws and all instruction pages. 2 Review Thermostat Features ❑ See Fig. 2 for thermostat parts. ® U.S. Registered Trademark Copyright © 2002 Honeywell • • All Rights Reserved 69-0847B-1