Honeywell Timer Thermostat Fuel Saver Manual

Honeywell Timer Thermostat Fuel Saver Owners Manual

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

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. If this control is replacing a control that contains mercury in a sealed tube, do not place your old control in the trash. Contact your local waste management authority for instructions regarding recycling and the proper disposal of the control, or of an old control containing mercury in a sealed tube.

Honeywell Timer Thermostat Fuel Saver Table of Contents

• Features of Your Thermostat
• Reviewing Your Family Schedule 
• Setting The Temperature
• Setting Subbase Switches 
• Inserting Timer Batteries 
• Setting The Timer
• Programming
• Temporarily changing the program 
• Troubleshooting 
• Servicing The Thermostat
• System on-time adjustment 
• Thermometer adjustment 
• Limited One-Year Warranty 

Features of Your Thermostat

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.
7. PROGRAM INDEX WHEEL. Controls high and low temperature at specific time of day as set by program pins. Can be moved to temporarily override a schedule
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.
13. BULB AND BIMETAL ELEMENT (2). Provides automatic temperature control by switching the heating or cooling system on and off.
14. AAA ALKALINE BATTERIES (2). Included to provide power to the timer.
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.

• What comfort temperature would you like to maintain?
• What energy savings temperature would you like to maintain?
• What time does the first person get up in the morning?
• Is anyone home all day?
• What times does the last person leave in the morning?
• What times does the first person return home in the evening?
• What time does the last person go to bed?

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. NOTE: You may bypass the time program by setting both the red and blue levers to the same temperature setpoint.

For Cooling (Not Applicable on Heating-only Model):

Set the left lever (blue mark)to the temperature you want for normal comfort periods. Set the right lever (red mark) to the energy savings temperature you want when you are sleeping or your home is unoccupied.

Setting Subbase Switches (If Applicable)

The subbase system switch controls system 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 in the AUTO position, the fan is also off.
• ON: In a cooling only application, only cooling operates. In a heating only application, only heating operates.

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.

To switch positions, use thumb or index finger to slide lever to desired position. Stop switch lever in detent over the desired function indicator mark for proper circuit operation.

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.

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. EXAMPLE: For 11 p.m., the time indicator arrow will point directly to the dark band on the dial. For 11 a.m, the arrow will point to the light band on the dial.

Daylight saving time

When daylight saving time starts, carefully move the knob clockwise one hour. When daylight-saving time ends, carefully move the knob clockwise 23 hours. Do not reverse the knob, or damage to the timer mechanism may occur.

Programming

You can program your thermostat to automatically lower and raise the temperature one or more times every 24 hours. Refer to energy savings chart on the back cover for typical heating and cooling savings with your new thermostat.

Before setting your program

Lift thermostat flip-up cover to find the 24-hour program dial. The slots on the program dial (Fig. 4) are for the program pins that can be inserted at ten-minute intervals. Three red and three blue program pins are included with your thermostat. The red pins start the high-temperature period; the blue pins start the low-temperature period. A heating program is preprogrammed. A red pin is inserted at 6:00 a.m. for high temperature (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 .
• To remove a pin, press against the program dial and pull the pin straight out. Do not attempt to change a pin if it is engaged with the program index wheel.
• On heating/cooling systems, you must reset the pins when the seasons change. You will also probably want to change the lever positions.

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. After the blue pin engages, the furnace will be off until room temperature drops to the energy saving setpoint.
• You can set both a day and a night program. See Fig. 5 for programming examples.

Setting the cooling program (not applicable on heating-only model):

• 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. After the red pin engages, the air conditioner will be off until room temperature rises to the energy saving setpoint.

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.
• Move the program index wheel counterclockwise so the time indicator arrow points to the desired color on the dial.

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. 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:

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. An incorrect setting can result in room temperature swings or burn out the anticipator, which would void the thermostat warranty.

IMPORTANT: Most hot water systems require a setting of 1.3 times the valve current rating.

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