Clock Thermostat Fuel Saver • Heat Only—CT1800 • Heat/Cool—CT1801 • Central Heat/Cool or Single Stage Heat Pump without Auxiliary Heat—CT1802 Heating-Only Thermostat and Wallplate or a Heating/Cooling Thermostat and Subbase Models CT1800, CT1801, CT1802 OWNER’S MANUAL 69-0395-2
69-0395—2
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 M3375 This control contains mercury in a sealed tube.
Table of Contents PAGE Features Of Your Thermostat ........................................................................................................... 5 Reviewing Your Family Schedule ..................................................................................................... 8 Setting The Temperature .................................................................................................................. 9 Setting Subbase Switches ..................................................
Features Of Your Thermostat 1 2 3 4 5 6 FLIP-UP COVER. Lift it up to set clock for energy savings and normal temperature periods. THERMOSTAT COVER. Lift up and remove to adjust heat anticipator or install batteries. THERMOMETER. Provides accurate room temperature reading. CLOCK. This clock provides a 24-hour slotted dial to hold the programming pins. CLOCK HANDS. Turn minute hand clockwise to match the correct AM or PM time to the time indicator TIME INDICATOR. Arrowhead indicates time for 24-hour dial.
8 9 10 11 12 13 TEMPERATURE SETTING LEVERS. Left (blue mark) controls the low temperature; right (red mark) controls the high temperature. PROGRAM PINS. Must be inserted into 24-hour clock dial slots to control program index wheel. PIN SLOTS. Located on 24-hour dial at ten-minute intervals for program pin insertion. HEAT ANTICIPATOR SCALEPLATE. Calibrated to match the heating system current draw in amperes. 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. 15 M2421 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. Set the right lever (red mark) to the temperature you want for normal comfort periods. HIGH TEMPERATURE SETTING LEVER LOW TEMPERATURE SETTING LEVER 50 NOTE: You may override the time program by setting both the red and blue levers to the same temperature setpoint.
Setting Subbase Switches (if applicable) The subbase system switch controls system operation as follows: The subbase fan switch controls fan operation as follows: HEAT: Heating system is controlled by the thermostat. Cooling system is off. COOL: Cooling system is controlled by the thermostat. Heating system is off. OFF: Both the heating and cooling systems are off. If the fan switch is at the AUTO position, the fan is also off. AUTO: In a cooling only application, only cooling operates.
Inserting Clock Batteries Power is supplied to the clock by two AAA alkaline batteries (included). Install batteries in thermostat as shown in Fig. 2. Once 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. BATTERY LOCATION FOR (2) AAA BATTERIES; INSTALL WITH POSITIVE ENDS UP M9619 Fig. 2—Inserting clock batteries.
Setting The Clock direction one hour. When daylight saving time ends, move the minute hand carefully in a clockwise direction 23 hours. Do not reverse the minute hand, or damage to the clock mechanism may occur. Lift thermostat flip-up cover and you’ll find the 24-hour program dial, slotted in 10-minute increments. Adjust the clock to the current time by moving the minute hand carefully in the clockwise direction. Do not reverse the minute hand.
for high temperature (comfort period); a blue pin is inserted at 10:00 PM for low temperature (energy saving period). Programming You can program your thermostat to automatically lower and raise the temperature one or more times every 24 hours. Refer to the energy savings chart on the back cover for typical heating and cooling savings with your new thermostat.
Setting the heating program: 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 savings period— • To insert a pin, push it straight into the selected notch on the program dial until it is completely seated. • To remove a pin, press against program dial and pull the pin straight out.
Setting the cooling program (not applicable on heating-only model): Decide when you want the energy savings period to start and insert a blue pin at the notch that corresponds to this time. After the blue pin engages, the furnace will be off until room temperature drops to the energy savings setpoint. You can set both a day and a night program. See Fig. 5 for program examples. Decide when you want the temperature to reach the comfort level.
to the high temperature period, move the wheel from blue to red. The change will be in effect until the next regularly scheduled change. 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—move the program index wheel or push the setting levers together.
Pushing the setting levers together will hold a particular temperature until you change the levers back. This method is recommended for a long-term absence. • Simply push both levers to the temperature you wish for system control. This temperature will stay in effect 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. Move switch to ON. — furnace power switch. May be OFF. — pilot flame (where applicable). May be out. — RH and W thermostat connections.
Troubleshooting (continued) Problem Check Action No heat (continued). — other. Energy savings temperature program 12 hours off. Rooms do not warm up at programmed time. — program dial for proper day or night phase. Temperature change occurs at the wrong time. Room temperatures are not correct. Contact a qualified service technician for assistance. Turn clock ahead 12 hours Move minute hand clockwise only. — clock program for heating system. May need more time to warm up rooms.
Troubleshooting (continued) Problem Check Action Heat-on time too short. — anticipator setting. (See Fig. 6 for anticipator location.) Increase anticipator setting by 0.05. Observe heating system operation. Heat-on time too long. — anticipator setting. (See Fig. 6 for anticipator location.) — system switch. May be in OFF or HEAT position. — fuse or circuit breaker. Decrease anticipator setting by 0.05. Observe heating system operation. Move switch to COOL position. — condenser switch position.
Troubleshooting (continued) Problem Check Action No cooling (continued). — other. Contact a qualified service technician for assistance. Clock does not run. — batteries may not have been installed. Install as shown in Fig. 2. — batteries may need replacement. Replace with two new AAA alkaline batteries as described in Inserting Clock Batteries section. Reinstall thermostat wallplate or subbase. Use a spirit level. Thermostat setting and thermometer reading disagree.
Servicing The Thermostat System On-Time Adjustment If the thermostat seems to cycle the heating system too fast or too slow, adjust the heating system on-time by moving the anticipator setting lever one indicator mark at a time (Fig. 6). A higher setting will increase heating system ontime length; a lower setting will decrease heating system on-time length. Observe the heating system operation after each adjustment. The heat anticipator must be correctly set.
Thermometer Adjustment • 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. The thermometer has been accurately calibrated at the factory and should only need adjustment if it has been dropped or mishandled. If the setpoint lever and the thermometer reading do not agree, follow the procedure below.
Toll-free Consumer Service For all questions concerning this thermostat, please read and follow the instructions. If you have questions regarding your Honeywell Fuel Saver 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 (i.e., hot water, warm air, oil, gas, etc.
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.
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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Home and Building Control Honeywell Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Home and Building Control Helping You Control Your World Honeywell Limited—Honeywell Limitée 155 Gordon Baker Road North York, Ontario M2H 2C9 www.honeywell.com/yourhome D.F. • Rev. 1-96 • ©Honeywell Inc. 1996 • Printed in U.S.A.
