Honeywell CT50K Owner's Manual - Page 2

CT50 Series • Owner's Manual Label wires and remove old wallplate Use a screwdriver to disconnect wires one by one. As you disconnect each wire, wrap it with the label matching the letter on your old thermostat. (Adhesive labels are supplied in your thermostat package.) Remove the old wallplate only after all wires are labeled. Be careful not to let loose wires fall into the wall opening. Wrap supplied labels securely around each wire. Do not let wires fall into wall opening! CT50/CT53/CT54 CT51/CT55 M23787 M23788 IGNORE WIRE COLORS: Use only letter designations to identify wire types. For CT50/CT53/CT54: If your old thermostat has 3 or more wires (not counting terminals C or C1), you may have purchased the wrong replacement thermostat. Stop now and call 1-800-468-1502 for advice. Mark mounting position CT50/CT53/CT54 For CT51/CT55: If your old thermostat has 7 or more wires (not counting terminals C or C1), you may have purchased the wrong replacement thermostat. Stop now and call 1-800-468-1502 for advice. CT51/CT55 1. Pull wires through base. 2. Level base if desired. 3. Mark positions of both screw holes. M23789 69-2040EFS-01 2 M23790