User manual HONEYWELL CT2800

[. . . ] If you have questions, call Honeywell Customer Response Center at 1-800468-1502. MERCURY SWITCH MERCURY NOTICE Typical location of a mercury switch in a thermostat. M3701 2 69-1385 Contents Step 1. Prepare for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove Old Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Install Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Four time periods are available during weekdays -- WAKE, LEAVE, RETURN, and SLEEP; view these periods individually on the display as you press the Weekday key. · WAKE is the time period you want the house at a comfortable temperature when you get up and while you get ready for work or school. (This is a higher temperature during heating season and a lower temperature during cooling season. ) · LEAVE is the time period you can set for an energy-saving temperature while you are away at work or school. (This is a lower temperature during heating season and a higher temperature during cooling season. ) · RETURN is the time period you want the house at a comfortable temperature for activities before bedtime. (This is a higher temperature during heating season and a lower temperature during cooling season. ) · SLEEP is the time period you can set for an energy-saving temperature while you are sleeping. (This is a lower temperature during the heating season and a higher temperature during the cooling season. ) 11 69-1385 Set one schedule for weekdays and another for weekends because your requirements are usually different for each. Also, during weekends, only the WAKE and SLEEP time periods are available. Fill in the times and temperatures you desire for weekdays and weekends. If you decide not to program the thermostat, it automatically controls heating at 68°F (20°C), and cooling at 78°F (26°C), 24 hours a day. Also, you do not need to enter a time and temperature program for all periods if your schedule does not require it. For example, a house that is occupied during weekdays would require programs only for WAKE and SLEEP. If no program is entered for the weekends, the thermostat operates on the weekday SLEEP program all weekend. Before programming, remove the clear plastic overlay covering the display. (See wiring diagrams. ) Hold the thermostat as shown in illustration to minimize need for wire extenders. If wires are still too short, use wire connectors (purchased locally) to extend wires. See illustration for guidelines on using wire extenders. METHOD TO INCREASE WIRE LENGTH WIRE NUT SIZE FOR TWO 18-GAUGE WIRES WIRE FROM WALL 6 IN. MATCH INSULATION COLORS OR MARK WIRE ENDS. M1715A In 5-wire installations only, be sure to remove the factory-installed jumper connecting terminals R and Rc. 23 69-1385 Loosen the terminal screws and slip each wire beneath its matching terminal. Plug the hole in the wall with insulation to help prevent drafts from adversely affecting thermostat operation. INSERT STRAIGHT UNDER SCREW HEAD JUMPER (FACTORYINSTALLED). REMOVE IF 5-WIRE SYSTEM R M1712B M3002A 24 W Y G END OF WIRE VISIBLE HERE Rc 5/16 in. (8 mm) STRIP 69-1385 2-WIRE HEAT-ONLY (JUMPER INTACT) A C 4-WIRE HEAT/COOL (JUMPER INTACT) A C B D B D W Y G JUMPER W Y G JUMPER R Rc R Rc HEATING RELAY OR VALVE COIL L1 (HOT) L2 HEATING RELAY OR VALVE COIL 1 COOLING CONTACTOR COIL FAN RELAY 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. L1 (HOT) L2 M1709B 1 POWER SUPPLY. M1710B 25 69-1385 5-WIRE HEAT/COOL (JUMPER REMOVED) A C 3-WIRE COOL-ONLY (JUMPER INTACT) A C B D B D W Y G W Y G JUMPER R Rc R Rc HEATING RELAY OR VALVE COIL FAN RELAY COOLING CONTACTOR COIL FAN RELAY 1 L1 (HOT) L2 1 COOLING CONTACTOR COIL L2 1 L1 (HOT) L2 L1 (HOT) POWER SUPPLY. Mount Thermostat NOTE: To remove thermostat from wall, first pull out at bottom of thermostat, then remove top. A. SWING OPEN COVER TO CHECK OPERATION. AM TU LEAVE Clock/Day Time TEMP Run Progra m Weekday Hold Temp Weekend Clear Usage Present Set Fan Auto On Cool System Off Heat M13545 27 69-1385 Step 10. [. . . ] Make sure the System switch at the air conditioner is in the On position; set it to On if it is in the Off position. 32 69-1385 If. . . Allow five to ten minutes after changing the setting before the air conditioner starts. If temperature setting is lower than current temperature, and the display says COOL, move the System switch from Cool to Off for ten minutes. If air conditioner comes on, compressor may have reached its high-limit temperature protection and shut down. If air conditioner does not come on after the ten minutes and the display says COOL, contact Honeywell Consumer Services at 1-800-468-1502. [. . . ]