Timer Thermostat Fuel Saver Heating-Only Thermostat and Wallplate or Heating/Cooling Thermostat and Subbase Models CT1500, CT1501, CT1502, CT1503 • Heat Only—CT1500 • Heat/Cool—CT1501 • Central Electric Heat/Cool or Single Stage Heat Pump without auxiliary heat—CT1502 • Millivolt Heat—CT1503 OWNER’S MANUAL 69-0333-6
Welcome to the world of energy savings with your new Honeywell Fuel Saver Thermostat. The Honeywell name is your assurance of accurate control and reliable operation for years to come. Your new thermostat will automatically control the temperature in your home to provide a high level of comfort plus energy savings when programmed according to the instructions in this manual. Recycling Notice This control contains mercury in a sealed tube. Do not place control in the trash at the end of its useful life.
Table of Contents PAGE Features of Your Thermostat .............................................................................................. 4 Reviewing Your Family Schedule ....................................................................................... 7 Setting The Temperature .................................................................................................... 8 Setting Subbase Switches ...........................................................................................
Features of Your Thermostat 1 1 FLIP-UP COVER. Lift up cover to set timer for energy savings and normal temperature periods . 2 THERMOSTAT COVER. Lift up cover and remove to adjust heat anticipator or install batteries. 3 THERMOMETER. Provides accurate room temperature reading. 4 TIMER. Provides 24-hour slotted dial to hold the programming pins. 5 TIMER SETTING KNOB. Turn clockwise to match the correct a.m. or p.m. time to the time indicator. 6 TIME INDICATOR. Arrowhead indicates time for 24-hour dial.
8 8 TEMPERATURE SETTING LEVERS. Left (blue mark) controls the low temperature; right (red mark) controls the high temperature. 9 PROGRAM PINS. Must be inserted into 24-hour timer dial slots to control program index wheel. 10 PIN SLOTS. Located on 24-hour dial at ten minute intervals for program pin insertion. 11 HEAT ANTICIPATOR SCALE PLATE. Calibrated to match the heating system current draw in amperes. 12 ANTICIPATOR SETTING LEVER. Must be adjusted to match the heating system primary control current.
15 WALLPLATE Provides mounting base and wiring connections for heating-only thermostat. 16 SUBBASE Provides mounting base, wiring connections and manual switching control for heating/cooling thermostat.
Reviewing Your Family Schedule Write the answers to the following questions in the spaces provided to determine the program that fits your family schedule.
Setting The Temperature For Heating: Set the left lever (blue mark) to the energy savings temperature you want when you are sleeping or your home is unoccupied. See Fig. 1. Set the right lever (red mark) to the temperature you want for normal comfort periods. HIGH TEMPERATURE SETTING LEVER (RED MARK) LOW TEMPERATURE SETTING LEVER (BLUE MARK) 50 NOTE: You may bypass the time program by setting both the red and blue levers to the same temperature setpoint.
The subbase fan switch controls fan operation as follows: ON—Fan operates continuously. AUTO—Fan operates with cooling equipment as controlled by the thermostat or with the heating equipment as controlled by the plenium fan switch. In electric heat, heat pump, and fan coil systems, the fan is controlled by the thermostat in heating and cooling. Setting Subbase Switches (If Applicable) The subbase system switch controls system operation as follows: HEAT—Heating system is controlled by the thermostat.
BATTERY LOCATION FOR (2) AAA BATTERIES; INSTALL WITH POSITIVE ENDS UP Inserting Timer Batteries Power is supplied to the timer by two AAA alkaline batteries (included.) Install batteries in thermostat as shown. See Fig. 2. One a year, or when batteries are dead, replace with two new AAA alkaline batteries. We recommend Energizer® batteries. The thermostat itself will operate without batteries, but will not operate as a fuel saver. M8585 Fig. 2—Inserting timer batteries.
Setting The Timer Lift thermostat flip-up cover to find the 24-hour program dial, slotted in ten-minute increments. Adjust the timer to the current time by carefully turning the knob clockwise . Do not reverse the knob. When time is set correctly, the time indicator arrow (see Fig. 3) will point to the correct time and corresponding daytime (light) or nighttime (dark) band of the program dial. TIMER SETTING KNOB TIME INDICATOR ARROW EXAMPLE: For 11 p.m.
(comfort period); a blue pin is inserted at 10:00 p.m. for low temperature (energy saving period). Two additional sets of pins are located in the program pin storage area. You can set up to six temperature changes with the pins supplied. We recommend at least five hours for each energy saving period. To change the pins or add a new energy saving period— • To insert a pin, push it straight into the selected notch on the program dial until it is completely seated .
24-HOUR PROGRAM DIAL (GRAY AREA FOR NIGHT SETTINGS) Setting the heating program: • Decide when you want the temperature to reach the comfort level. Find the notch on the dial that is one-half hour before this time and insert a red pin. The half-hour head start gives the furnace time to heat the house before you wake up or arrive home. • Decide when you want the energy saving period to start and insert a blue pin at the notch that corresponds to this time.
Setting the cooling program (not applicable on heating-only model): WINTER • Decide when you want the temperature to reach the comfort level. Find the notch on the dial that is one-half hour before this time and insert a blue pin. The half-hour head start gives the air conditioner time to cool the house before you wake up or arrive home. • Decide when you want the energy saving period to start and insert a red pin at the notch that corresponds to this time.
Temporarily changing the program You may temporarily raise or lower the temperature if you come home early, stay up late, plan to be out for the evening, leave on vacation, etc. You can make a temporary change one of two ways—moving the program index wheel or pushing the setting levers together. Moving the program index wheel will change the program just until the next regularly scheduled change is due: • Lift the thermostat cover.
EXAMPLE: If you are currently at the high temperature period and want to switch to the low temperature period, move the wheel from red to blue. If you are currently at the low temperature period and want to switch to the high temperature period, move the wheel from blue to red. The change will be in effect until the next regularly scheduled change. 50 Pushing the setting levers together will hold a particular temperature until you change the levers back.
Troubleshooting Your Honeywell thermostat requires little or no attention. Most problems can generally be traced to the following: Problem No heat. Check Action — system switch. May be in OFF or COOL position. 1 Move system switch to HEAT position. — fuse or circuit breaker. If blown or tripped, replace fuse or reset breaker. — furnace power switch. May be off. Move switch to ON. — pilot flame (where applicable). May be out. Relight pilot flame per furnace manufacturer instructions.
Troubleshooting (continued) Problem Check Action No heat. (continued) — other problem. Contact a qualified service technician for assistance. Energy savings temperature program 12 hours off. — program dial for proper day or night phase. Turn timer ahead 12 hours. Move setting knob clockwise only. Rooms do not warm up at programmed time. — timer program for heating system. May need more time to warm up rooms. Move red pin one-half hour earlier on the program dial.
Troubleshooting (continued) Problem Check Action Heat-on time too short. — anticipator setting. (See Fig. 6.) Increase anticipator setting by 0.05 Observe heating system operation. Heat-on time too long. — anticipator setting. (See Fig. 6.) Decrease anticipator setting by 0.05. Observe heating system operation. No cooling. 1 — system switch. May be in OFF or HEAT position. Move switch to COOL position. — fuse or circuit breaker. If fuse is blown or breaker tripped, replace or reset.
Troubleshooting (continued) Problem Check Action No cooling. (continued) — other problem. Contact a qualified service technician for assistance. Timer does not run. — batteries may not have been installed. Install as shown on page 10. — level position of thermostat. Replace with two new AAA alkaline batteries as shown on page 10. — area around thermostat for drafts or radiant heat. Reinstall thermostat wallplate or subbase. Use a spirit level. Thermostat should be about 5 ft [1.
Servicing The Thermostat System on-length adjustment NOTE: Not applicable on CT1503 Millivolt Heat model. If the thermostat seems to cycle the heating system too fast or too slow, adjust the heating system on-length by moving the anticipator setting lever one indicator mark at a time (Fig. 6); a higher setting will increase heating system on length a lower setting will decrease heating system on-length. Observe the heating system operation after each adjustment. The heat anticipator must be correctly set.
If the readings are different, insert a small screwdriver in the thermometer slot shown in Fig. 7, and turn it until both thermometers read the same. Replace thermostat cover and put the system into operation. Thermometer adjustment The thermometer was accurately calibrated at the factory and should only need adjustment if it was dropped or mishandled. If the setpoint lever and the thermometer reading do not agree, follow the procedure below. Remove thermostat cover and open the flipup cover.
Toll-free Consumer Services If you have questions regarding the Timer Thermostat please visit our web site at www.honeywell.com/yourhome or call the customer information line at 1-800-468-1502. Before you call, please have the following information available—thermostat model number and date code, kind of heating/cooling system (for example, hot water, warm air, oil, gas, etc.) and number of wires connected to the thermostat.
TYPICAL ENERGY SAVINGS FOR REPRESENTATIVE CITIES IN THE U.S. AND CANADA Savings for Once-A-Day 10°F [5°C] decrease Savings for Twice-A-Day 10°F [5°C] decrease* Savings for 5°F [3°] summer increase Approximate percentage of energy cost savings 30% 28% 26% 24% 22% 20% 18% 16% 14% 12% 10% 8% 6% 4% 2% Minneapolis St. Paul Montreal Ottawa Toronto Edmonton Regina Winnipeg Calgary Moncton North Bay Quebec St.
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Limited One-Year Warranty Honeywell warrants this product, excluding battery, to be free from defects in the 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.
Home and Building Control Honeywell Inc. 1985 Douglas Drive No. Golden Valley, MN 55422 Home and Building Control Helping You Control Your World Honeywell Limited—Honeywell Limitée 740 Ellesmere Road Scarborough, Ontario M1P 2V9 D.F. ©Honeywell Inc. 1994 Printed in U.S.A. Rev. 11-96 Form Number 69-0333—6 www.honeywell.