Honeywell CT2800 Programmable Thermostat Installation Guide

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CT2800 Programmable Thermostat  

INSTALLATION AND PROGRAMMING INSTRUCTIONS  

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 CT2800  

Table of Contents  

Installation ..................................................................................................................................................................  

2

Programming.............................................................................................................................................................. 12  

Operation.................................................................................................................................................................... 18  

Frequently Asked Questions ...................................................................................................................................... 22  

Customer Assistance ................................................................................................................................................. 23  

Limited Warranty ........................................................................................................................................................ 24  

® U.S. Registered Trademark  

Copyright © 2003 Honeywell International Inc.  

All Rights Reserved  

69-1638-1  

firealarmresources.com  

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Name	Honeywell CT2800 Programmable Thermostat Installation Guide
Make	Honeywell
Language	English
Filetype	PDF (Download)
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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• Honeywell

Honeywell CT2800 Programmable Thermostat Installation Guide Overview

Summary of Contents

• Page 1: CT2800 programmable thermostat Installation and programming instructions 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. Table of contents Installation Programming Operation Frequently asked questions Customer assistance Limited warranty
• Page 2: If you are removing an old thermostat that contains mercury in a sealed tube, 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. Make sure that the CT2800 is the correct thermostat for your heating/cooling system. Read the compatibility chart below to determine which system you have. If your system is not compatible with the CT2800, the table recommends an alternate Honeywell model.
• Page 3: Compatible heating/cooling system with CT2800 includes various models such as CT3600 and CT3611. CT3600 is a steam boiler with radiator heat. A heat pump produces heating and cooling from the same outdoor unit without auxiliary heat. Multistage heat pumps include auxiliary or backup heat. A multistage conventional system has more than one stage for heating or cooling. Step 1 involves preparing for installation by unpacking the thermostat and ensuring all parts are present. Required tools include two AA alkaline batteries, a wire cutter/stripper, and a screwdriver. Optional tools may include a level, electrical tape, and a drill with the appropriate bit size. Ensure heating and cooling systems are functioning properly before installation. Avoid operating the cooling system when outdoor temperatures are below 50°F (10°C) to prevent compressor damage.
• Page 4: Step 2. Remove old thermostat 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. Unscrew and remove the old thermostat’s mounting plate from the wall, but do not disconnect the wires. Inspect old thermostat wiring. If wiring meets certain conditions, see special wiring instructions section after Step 7. Using enclosed labels, mark wires with the letter of the terminal it is attached to on the old thermostat. Disconnect the wires from the old thermostat and wrap the wires around a pencil to keep them from falling back into the wall. If your old thermostat contains mercury, you must recycle it.
• Page 5: Step 3. Install mounting plate Separate the mounting plate from the thermostat using a coin. Position the mounting plate on the wall, ensuring it is flush and no wires are trapped behind it. Level the mounting plate and mark the center of the screw holes with a pencil. Remove the mounting plate and drill holes at the marked locations. For drywall, drill two 3/16-inch holes; for plaster or wood, drill two 7/32-inch holes. If installing in drywall, tap the anchors into the drilled holes until flush with the wall. Reposition the mounting plate over the holes, pull the wires through, and loosely insert the mounting screws. Ensure the mounting plate is level and tighten the mounting screws. Check your progress; the mounting plate should be securely mounted on the wall.
• Page 6: Set thermostat for your type of heating system to maintain accurate temperature control. Correct thermostat settings minimize temperature swings and efficiently run the fan. Use the fuel switch on the back of the thermostat to set for gas, oil, or electric heating systems. DIP switches 1 and 2 configure the thermostat for your specific heating system type. Refer to the Heating System Table for correct DIP switch settings. The thermostat displays temperature in degrees Fahrenheit by default; switch to Celsius by turning DIP Switch 3 to Off. You can install batteries and program the thermostat now or wait until it is mounted. Instructions for battery installation and programming are provided in subsequent steps. DIP switches are factory-set for warm air, gas, or oil heating systems. Proper fan operation is enabled by the correct fuel switch setting.
• Page 7: Heating system table Type of system Warm air, gas, or oil heating system with an efficiency rating under 90%. High-efficiency furnace such as a 90% or greater AFUE unit Hot water boiler Electric furnace Step 5. Wire thermostat terminals Using the labels on the wires, match letter of your old thermostat wire with the corresponding terminal on the back of your new thermostat. If letters on old thermostat terminals do not match letters on new thermostat terminals, all old wires may not need connecting to new thermostat. Loosen terminal screws and slip each wire beneath its matching terminal. Securely tighten terminals.
• Page 8: Step 6. Mount Thermostat Align the tabs at the top of the thermostat with the tabs at the top of the mounting plate. Press the lower edge of the case to latch the bottom of the thermostat.
• Page 9: Step 7. Install the batteries Batteries must be installed for programming and operation of the thermostat and heating/cooling system. Honeywell recommends using Energizer® batteries. 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. When the batteries are installed correctly, the digital display flashes all entries once, then begins to flash a default time and the current temperature. Special Wiring Instructions A clock thermostat has one or two extra wires attached to the C or C1 terminals that allow the clock to operate. Make sure that power to the heating/cooling system is turned off. As you disconnect the wires, do not allow these wires to touch. Wrap the wires separately, using electrical tape to insulate the wires.
• Page 10: If your old thermostat has six or more wires, your heating/cooling system is most likely a variation of a heat pump or multistage system. Your CT2800 Thermostat will not work with such systems and should be returned to the place of purchase. If you have three wires for heating only and can operate the fan using the fan ON switch, the CT2800 Thermostat will work with your system. If you have a three-wire heating-only system and cannot operate the fan using the fan ON switch, the CT2800 Thermostat will probably not work with your system. If there are extra wires that do not connect to your old thermostat, do not label them. You will not connect these wires to your new thermostat. Your new thermostat has a factory-installed metal jumper between the R and Rc terminals. Remove the jumper before wiring the R and Rc terminals. This thermostat does not use the C wiring terminal.
• Page 11: Old thermostat terminals that do not match new thermostat terminals. Use the table below to wire the new thermostat. Connect to new thermostat terminal. 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. Do not connect transformer common. Do not continue installation. You have a multistage heating/cooling system. Select an alternate thermostat model. Remove factory-installed jumper between R and Rc terminals in 5-wire systems.
• Page 12: Faceplate illustration and description provide an overview of the thermostat's functions. The fan switch selects automatic fan operation or fan on. Set schedule puts the thermostat into programming mode. Set clock/day sets the clock and day. Time ahead and back sets the time ahead and back. Program periods indicate the current program period or period being programmed. The day of the week shows the current day or day being programmed. Temperature displays room temperature or programmed temperature. System on indicates when the heating/cooling system is running. Temporary indicates when a temporary override is made to the program.
• Page 13: Set current time and day by pressing the appropriate buttons. The time and day are displayed on the thermostat. The CT2800 thermostat allows programming for heating and cooling seasons. During the heating season, set the normal room temperature higher and the energy-saving temperature lower. During the cooling season, set the normal room temperature lower and the energy-saving temperature higher. You can set up to four program periods for weekdays and two program periods for weekends. The program periods are defined in a table.
• Page 14: Program Period Description When Available You can set the system at a comfortable temperature for this period. You can set up an energy-saving temperature for this period. Programming Tips You do not need to program times and temperatures for all program periods. If you decide not to program your thermostat, it automatically controls heating at 68°F (20°C), and cooling at 78°F (26°C), 24 hours a day. The temperatures cannot be set any higher than 88°F (31°C) or any lower than 45°F (7°C). When pressing the buttons, use the ball of your finger or a soft pencil eraser. If you make an error at any time during programming, press the program period you last programmed.
• Page 15: Step 3. Program heating schedule Write in the times and temperatures that you want to program for your heating schedule. Set the system switch to HEAT. A blank schedule is displayed. Set the Monday–Friday WAKE time by pressing Time. Set the Monday–Friday WAKE temperature by pressing Temp until desired temperature is displayed.
• Page 16: Press to display a blank schedule for the next program period. Repeat steps for each weekday program period. Set the Saturday and Sunday WAKE time by pressing until the weekend schedule is displayed. Set the Saturday and Sunday WAKE temperature by pressing until desired temperature displays. Press again to display blank schedule for SLEEP program period. Repeat steps to set program. Press to start the program.
• Page 17: Step 4. Program cooling schedule Write in the times and temperatures you want to program for your cooling schedule. Set the system switch to COOL. Repeat steps 3c. through 3k. to program the weekday and weekend cooling schedule. Step 5. Check system Verify that your heating system works. Set the system switch to Heat, and the Fan switch to Auto. Your heating system should start and the fan should run after a short delay. Your heating system should shut off. Verify that your cooling system works. 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).
• Page 18: Set the system switch to Cool and the fan switch to Auto. Press Temp until the setting is 10°F (6°C) below room temperature. Your cooling system and fan should start. When cooling setting is changed, the thermostat can delay up to five minutes before turning on the air conditioner. Press Temp until the setting is 10°F (6°C) above room temperature. Your cooling system and fan should stop. Set the system switch to Off and the fan switch to Auto. The cooling system and fan should be off. Change clock for daylight/standard time. Press and hold Time until the correct time is displayed.
• Page 19: Set fan and system switches control the operation of your fan and heating and cooling system. Set the fan switch first and then set the system switch. Auto is the normal setting for most homes. The fan runs continuously for improved air circulation during special occasions or for more efficient air cleaning. In a heat-only system, the fan runs continuously only if the fan wire has been connected to the G terminal on the back of the thermostat. The thermostat controls your air conditioning system when set to cool. Both heating and air conditioning systems are off when set to off. Replace the batteries as soon as possible when the display shows bAt Lo or is blank. If the display is blank, batteries are dead or incorrectly installed and reprogramming is needed. If new batteries are inserted within 20-30 seconds of removing old ones, reprogramming is not needed.
• Page 20: Install new batteries, ensuring positive and negative terminals are oriented as marked inside the 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 the system switch to OFF, insert batteries backward, wait for five to ten seconds, and return batteries to correct orientation. Replace batteries once a year to prevent the heating/cooling system from shutting down due to lack of battery power in the thermostat. If leaving home for longer than a month, change batteries before leaving. Make sure the system switch is set to either HEAT or COOL before making any changes to the schedule. Press the appropriate button until the desired temperature is displayed. An arrow is displayed, indicating that the change is temporary. A temporary change to temperature lasts for the current program period only. To cancel a temporary change before the next scheduled program period, press the designated button.
• Page 21: Hold a temperature indefinitely using the Hold Temp feature when you want to maintain a constant temperature. To activate Hold Temp, press the designated button until HLd is displayed. Press Temp until the desired temperature is displayed. To cancel the hold, press the designated button again. Check the current programmed temperature by pressing the designated button to display the temperature programmed for the current program period. The SET indicator displays briefly along with the programmed temperature before returning to room temperature. Press repeatedly to display the times and temperatures that you programmed. To resume the program, press the designated button. To cancel a program, press until the desired program is displayed.
• Page 22: Change a program permanently by following steps for programming heating or cooling schedule. If the display does not come on, ensure the batteries are fresh and installed correctly. Set the system switch to off, remove batteries, and insert them backward for 5-10 seconds to reset the thermostat. The temperature display does not go lower than 45°F (7°C) or higher than 88°F (31°C) during programming due to temperature limit settings. If the display shows flashing “bAt Lo,” the batteries are low and should be replaced as soon as possible. If “bAt Lo” continues to display after replacing batteries, reset the thermostat by inserting batteries backward for 5-10 seconds. Temperature changes may occur at the wrong times; check program times and ensure AM and PM indications are correct. Make sure the current day and time are accurate; reprogram if necessary.
• Page 23: Heating 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. If display is blank or displays “bAt Lo,” install fresh batteries. If temperature setting is higher than current room temperature and SYSTEM ON arrow is displayed, thermostat is operating correctly. Cooling does not come on Check that the System switch is set to COOL. The thermostat has a built-in time delay on cooling. Allow 5-10 minutes after changing setting before air conditioner starts. If temperature setting is lower than room temperature and SYSTEM ON arrow is displayed, thermostat is operating correctly. The house is too warm or too cool Press RUN PROGRAM to check the current temperature setting. Furnace cycles too often or system cycle length is too short or too long. Be aware that it is normal for the current setting and the displayed room temperature to differ on occasion.
• Page 24: Notice: This equipment is a Class B digital apparatus, that complies with Canadian Radio Interference Regulations. 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 the product is defective, return it with proof of purchase to the retailer or mail it to Honeywell. This warranty does not cover removal or reinstallation costs. Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above. Honeywell shall not be liable for any loss or damage of any kind, including any incidental or consequential damages. This warranty is the only express warranty Honeywell makes on this product. The duration of any implied warranties is hereby limited to the one year duration of this warranty. This warranty gives you specific legal rights, and you may have other rights which vary from state to state. If you have any questions concerning this warranty, please write to Honeywell Customer Relations Center.