CT3200 Programmable Thermostat OWNER’S GUIDE Welcome to the world of comfort and energy savings with your new Honeywell Programmable Thermostat. Your new thermostat will automatically control the temperature in your home, keeping you comfortable while saving energy. Weekday/Weekend (5-day/2-day) Programmable Heat and/or Cool Low Voltage (20 to 30 Vac) Thermostat and Mounting Plate Model CT3200 Table of Contents Installation ...................................................................................
MERCURY NOTICE If you are removing an old thermostat that contains mercury in a sealed tube (Fig. 1), do not place the old thermostat in the trash. Contact your local waste management authority for instructions regarding recycling and the proper disposal of the old thermostat. MERCURY SWITCH M3701 Fig. 1. INSTALLATION Verify You Have Correct Thermostat Make sure that the CT3200 is the correct thermostat for your heating/cooling system.
Compatible with CT3200? Heating/Cooling System Steam A steam boiler with radiator heat. Alternate Model No CT3600 Heat Pump No Heating and cooling are produced from the same outdoor unit (compressor) with no auxiliary or backup heat. CT3600 Multistage Heat Pump No Heating and cooling are produced from the same outdoor unit (compressor) with auxiliary or backup heat. CT3611 Multistage Conventional A heating or cooling system with more than one stage. See your contractor No Step 1.
Step 2. Remove Old Thermostat Fig. 2. a. b. c. d. M20140 Fig. 3. Turn off power to the heating/cooling system, either at the furnace or at the fuse/circuit breaker panel. Remove the cover of your old thermostat (Fig. 2). Unscrew and remove the old thermostat’s mounting plate from the wall, but do not disconnect the wires. Inspect the old thermostat wiring. If wiring meets any of the following conditions, see special wiring instructions section after Step 7. • M19086 Fig. 4.
Step 3. Install Mounting Plate Fig. 5. a. b. c. d. M20139 Fig. 6. e. f. g. Separate the mounting plate from the thermostat using a coin, as shown in Fig 5. Position the mounting plate on the wall. Be sure the mounting plate is flush against the wall and none of the wires are trapped behind it. Level the mounting plate and use a pencil to mark the center of the mounting plate screw holes. Remove the mounting plate and drill holes at the locations marked. • For drywall, drill two 3/16-inch holes.
Step 4. Set Thermostat for Your Type of Heating System THERMOSTAT BACK DISPLAY F DISPLAY C 3 - ON 3 - OFF 1 2 3 ON 1 2 3 OFF ON W C FUEL SWITCH F I M P O HEATING RDIP SWITCH FUEL SWITCH SYSTEM POSITION POSITION T1 - ON 2 - ON WARM AIR F FURNACE A HOT WATER OR 1 - OFF 2 - ON F HIGH EFFICIENCY N ELECTRIC E FURNACE T1 - ON 2 - OFF : W Y G E Y R G RC M20637 Fig. 8. a.
Heating System Table DIP Switches 1 and 2 Type of System Fuel Switch Warm air, gas, or oil heating system with an efficiency rating under 90%. (The furnace efficiency rating should be on the furnace.) Use factory setting 1–On; 2–On F High-efficiency furnace such as a 90% or greater AFUE (Average Fuel Utilization Efficiency) unit 1–Off; 2–On F Hot water boiler 1–Off; 2–On F Electric furnace 1–On; 2–Off E Step 5. Wire Thermostat Terminals Fig. 9. a. b. G Y Hold thermostat as shown in Fig. 9.
Step 6. Mount Thermostat Fig. 11. Fig. 12. e. f. M20131 M20130 69-1631—1 8 Align the tabs at the top of the thermostat with the tabs at the top of the mounting plate (Fig. 11). Press the lower edge of the case to latch the bottom of the thermostat (Fig.
Step 7. Install the batteries Fig. 13. IMPORTANT: Batteries must be installed for programming and operation of the thermostat and heating/cooling system. Honeywell recommends using Energizer® batteries. a. b. c. M1719C REMOVING BATTERY DOOR Fig. 14. d. e. Make sure that the System switch is set in the OFF position. Using a coin, open the battery door as shown in Fig. 13. Install the batteries. Make sure that the positive and negative terminals are oriented correctly as marked inside the battery case.
Six or more wires If your old thermostat has six or more wires (excluding clock wires attached to the C or C1 terminals), your heating/ cooling system is most likely a variation of a heat pump or multistage system. Your 3200 Thermostat will NOT work with such systems and should be returned to the place of purchase. See the thermostat compatibility table for information about which programmable thermostat will work with your system.
Old thermostat terminals that do not match new thermostat terminals Use the table below to wire the new thermostat. Connect to New Thermostat Terminal Old Thermostat Terminal Description R, RH, 4, V R* Power Rc, R Rc* Power for cooling W, W1, H W Heat Y, Y1, M Y Cooling G, F G Fan O Do not continue installation Changeover in cool (O terminal) or changeover in heat (B terminal). You have a single-stage heat pump or zoning system. Select an alternate thermostat model.
PROGRAMMING Faceplate Illustration and Description Descriptions Fig. 16. 7 6 SYSTEM ON TEMPORARY 4 2 Set Schedule–Puts the thermostat into programming mode. 9 3 Set Clock/Day–Sets the clock and day. 10 4 Time Ahead and Back–Sets the time ahead and back. 5 Program periods–Current program period or period being programmed. 6 Day of the week–Current day or day being programmed. 7 Time–Current time or program time. 8 Temperature–Room temperature or programmed temperature.
Step 1. Set Current Time and Day a. Press once. The time is displayed (Fig. 17). b. Press and hold or Fig. 17. until the cur- rent time is displayed. c. Press again. Fig. 18. The day is displayed (Fig. 18). d. Press and hold rent day is displayed. or e. Press once. The current time and day and the current temperature are displayed (Fig. 19). until the cur- Fig. 19. Step 2.
Program Period Description When Available WAKE The time when you get up and get ready to leave your home. You can Weekdays and weekend set the system at a comfortable temperature for this period. LEAVE The time when you are regularly away from home. You can set up an Weekdays only energy-saving temperature for this period. RETURN The time between returning home and going to bed. You can set the Weekdays only system at a comfortable temperature for this period. SLEEP The time when you are sleeping.
Step 3. Program Heating Schedule a. Write in the times and temperatures that you want to program for your heating schedule. Heating Schedule Program Period WAKE LEAVE RETURN SLEEP Suggested Settings Time 6:00 AM 8:00 AM 6:00 PM 10:00 PM Temp 70°F (21°C) 62°F (16.5°C) 70°F (21°C) 62°F (16.5°C) Weekday (Mon–Fri) Time Temp Weekend (Sat–Sun) Time Temp b. Set the System switch to HEAT. Fig. 20. c. Press once. A blank schedule is displayed (Fig. 20). d.
f. Press to display a blank schedule for the next Fig. 22. program period (Fig. 22) and repeat steps d. through f. for each weekday program period. g. Press until the weekend schedule is displayed Fig. 23. (Fig. 23). h. Set the Saturday and Sunday WAKE time by pressing or until the desired time is displayed. i. Set the Saturday and Sunday WAKE temperature by pressing or until desired temperature displays (Fig. 24). j.
Step 4. Program Cooling Schedule a. Write in the times and temperatures you want to program for your cooling schedule. Cooling Schedule Program Period WAKE LEAVE RETURN SLEEP Suggested Settings Time 6:00 AM 8:00 AM 6:00 PM 10:00 PM Temp 78°F (25.5°C) 85°F (29.5°C) 78°F (25.5°C) 82°F (28°C) Weekday (Mon–Fri) Time Temp Weekend (Sat–Sun) Time Temp b. c. Set the System switch to COOL. Repeat steps 3c. through 3k. to program the weekday and weekend cooling schedule. Step 5.
Verify that your cooling system works IMPORTANT: To avoid damaging the compressor in the air conditioner, do not operate the cooling system when the temperature outdoors is below 50°F (10°C). d. Set the System switch to COOL, and the Fan switch to AUTO. Fig. 26. e. Press until the setting is 10°F (6°C) below room temperature (Fig. 26). Your cooling system and fan should start. NOTE: When cooling setting is changed, thermostat can delay up to five minutes before turning on air conditioner.
Set Fan and System Switches The switches on the bottom of the thermostat faceplate control the operation of your fan and the heating and cooling system. Set the Fan switch first and then set the System switch. Switch Fan Setting Result Auto A single-speed fan turns on automatically with the air conditioner or furnace. A two-speed fan usually runs on high with the air conditioner and on low with the furnace. Auto is the normal setting for most homes. On The fan runs continuously.
d. e. NOTE: Install new batteries. Make sure that positive and negative terminals are oriented as marked inside battery case. Close the battery door and set the System switch to HEAT or COOL. If “bAt Lo” continues to display after replacing the batteries, set System switch to OFF, insert batteries backward, wait for five to ten seconds, and return batteries to correct orientation. Then reprogram.
Hold a temperature indefinitely Fig. 28. Use the Hold Temp feature when you want to maintain a constant temperature indefinitely, such as when you go on vacation. a. b. Press . “HLd” is displayed (Fig. 28). Press or until the desired temperature is displayed. NOTE: To cancel the hold, press . Check the current programmed temperature Fig. 29. Press to display temperature programmed for current program period. The SET indicator displays briefly along with the programmed temperature (Fig. 29).
b. Press and simultaneously. A blank program schedule is displayed and the program is canceled (Fig. 31). Fig. 31. Change a program permanently Follow steps for programming heating schedule or programming cooling schedule. FREQUENTLY ASKED QUESTIONS If... Display does not come on Then... • • Make sure the batteries are fresh and installed correctly. Set System switch to Off. Remove batteries and insert backward for five to ten seconds to reset thermostat.
If... Heating does not come on Then... • • • • • • Cooling does not come on • • • • • • Check that the System switch is set to Heat. Check the system fuse or circuit breaker and replace or reset if necessary. Check for correct wiring and good connections. If display is blank or displays “bAt Lo,” install fresh batteries. Allow time for the furnace to heat up and the fan to come on before checking for heat at the register.
LIMITED WARRANTY Honeywell warrants this product, excluding battery, to be free from defects in workmanship or materials, under normal use and service, for a period of one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at Honeywell’s option) within a reasonable period of time.
