Honeywell CT2700 Programmable Thermostat User Guide

Honeywell CT2700 Programmable Thermostat User Guide

Congratulations on the purchase of your new thermostat! Over 100 years of Honeywell engineering expertise went into the making of this thermostat in an effort to provide you with a more comfortable and convenient living environment. Your new thermostat will automatically control the temperature in your home, keeping you comfortable while saving energy when programmed according to the instructions in this manual. Direct any questions concerning the application of this thermostat to Honeywell Customer Assistance at 1-800-468-1502, Monday – Friday 7:00 a.m. – 5:30 p.m., Central time.

RECYCLING THERMOSTAT
If this thermostat 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 this control, or of an old control containing mercury in a sealed tube. If you have questions, call Honeywell, Inc. at 1-800-468-1502.

PREPARE FOR INSTALLATION
Check Table 1 to make sure this thermostat is compatible with your system. If not, return it to the retailer. For more information, call Honeywell, Inc. at 1-800-468-1502.

Table 1. Compatibility Chart

• Not compatible with any 120/240-volt circuit.
• Not compatible with 2-wire White-Rodgers no. 1361 zone valves.
• Not compatible with millivolt systems.
• Compatible with 2-wire Honeywell zone valves. Isolating relay required for 3-wire thermostats zone valves

REMOVE OLD THERMOSTAT
Test to make certain that your heating and air conditioning systems (where applicable) are working properly. If either does not work, contact your local heating/air conditioning dealer. To avoid compressor damage, do not operate the cooling system when the outdoor temperature is below 50°F (10°C).

CAUTION
Be careful when handling wires during installation. Damage to the heating/cooling system is possible. Disconnect power at the furnace or at the main breaker/fuse box before starting operation.

• Carefully unpack your new thermostat, wallplate, and decorator cover plate; save the package of screws, instructions, and receipt.
• Remove the cover from the old thermostat. If it does not snap off when pulled firmly from the bottom, check for a screw used to lock on the cover.
• Loosen screws holding thermostat to subbase, wallplate, to wall and lift away.
• Disconnect wires from the old thermostat or subbase. As you disconnect each wire, use masking tape to label it with the old terminal designation. If there are only two wires, they do not need labeling. Wrap wires around a pencil to keep them from falling back into the wall as shown in Fig. 2.

Replacing the Clock With C or C1

Clock Terminals
If you are replacing a Honeywell Chronotherm¨ Thermo-stat, you may find one or two wires that go to the C or C1 clock terminals on the Chronotherm¨ Thermostat wiring wallplate. Do not allow them to touch, or you can damage your transformer. Disconnect the wires and wrap them separately using electrical tape; do not wrap them together. Place the wires to avoid interfering with the new thermostat operation. Record the colors and terminal designation labels of the remaining wires.

Six or More Wires
If there are six or more wires connected to the thermostat (excluding clock wires attached to terminals), you probably have a variation of a multistage heat pump or another multistage system. The thermostat is not compatible with such systems so return the product to your retailer. If you would like information about which programmable thermostats work with your system, call Honeywell Customer Assistance Center at 1-800-468-1502.

Three Thermostat Wires
If you have three wires for heating only and can operate the fan using the FAN ON switch, this thermostat works with your system. However, some hot water (zoned) heating systems have three thermostat wires. The thermostat will work only if you install an isolating relay on these systems. For details, call Honeywell Customer Assistance Center at 1-800-468-1502.

MOUNT WALLPLATE
IMPORTANT
Level for appearance only. The thermostat functions normally even when not mounted level. Position the decorator cover plate and wallplate on the wall. Level the wallplate for appearance if desired. Use a pencil to mark the two mounting holes that best fit the application. See Fig. 3.

• * Remove the decorator cover plate and wallplate

  • from the wall, and drill two 3/16-inch holes in the wall (if drywall). For firmer wall material such as plaster or wood, drill 7/32-inch holes. Gently tap provided anchors into the drilled holes until flush with the wall.
  • Reposition the decorator cover plate and wallplate, pulling wires through the wiring opening. Loosely insert the mounting screws into the holes.
  • Level for appearance only; the thermostat functions properly even when not level. Tighten the mounting screws.

WIRE WALLPLATE TERMINALS
The CT2700 Thermostat is powered through the heating/cooling system and is adaptable to most 4-wire, 18 to 30 Vac heating-cooling systems. Refer to Figs. 4 through 6 for some typical system wiring diagrams.

IMPORTANT Use an 18-gauge maximum wire to wire the thermostat. All wiring must comply with local electrical codes and ordinances. If unsure about household wiring procedures, call your local heating and air conditioning contractor. Refer to the masking tape labels you placed on wires when you removed your old thermostat. Match the letter of your old thermostat wire with the terminal of the corresponding letter on your new thermostat. Refer to Fig. 7.

NOTE : To ensure proper mounting of the thermostat, restrict all wiring to the left side of the terminals.

• Loosen the terminal screws and slip each wire beneath its matching terminal. The shape of the terminals permits the insertion of straight or wraparound connections. See Fig. 8. Tighten the terminals.
• Plug the hole in the wall with insulation to help prevent drafts from adversely affecting thermostat operation.

ADJUST FAN OPERATION SWITCH

The thermostat fan operation switch, labeled fuel switch in Fig. 9, is set at the factory in the F (gas/oil fuel) position. This is the correct setting for most systems. If this system is an electric heat system, set the switch to the E (electric) position. The E setting allows the fan to turn on immediately with the heating or cooling equipment in a system where the G terminal is connected.

MOUNT THERMOSTAT TO WALLPLATE

• Align the tab and connector pins at the top of the thermostat with the wallplate. See Fig. 10.
• Press the thermostat straight onto the wallplate to latch.
• Restore power to the heating/cooling system.

NOTE : To remove the thermostat from the wallplate, grasp the thermostat on both sides and pull the thermostat straight out.

PROGRAM YOUR THERMOSTAT

The thermostat is preprogrammed for your convenience with the following time and temperature settings, see Table 2.

Period

| Start Time| Heating Setpoint| Cooling Setpoint
---|---|---|---
WAKE| 6:00 AM| 70°F (21°C)| 78°F (25.5°C)
SLEEP| 10:00 PM| 62°F (16.5°C)| 82°F (28°C)

Table 2. Preprogrammed Time/Temperature Settings.

• WAKE is the time period you want the house at a comfortable temperature during the day.
• SLEEP is the time period you can set for an energy-savings temperature while you are sleeping.
• NOTE : The heating and cooling program times are the same. Changing your cooling WAKE time also changes your heating WAKE time.

The following sequence uses the heating program as an example; the System switch is in the HEAT position. To change to the cooling program, move the System switch to the COOL position and enter the cooling temperature settings.
NOTE : To exit the sequence at any time, press until End is displayed.

1.  Set Current Time
   •  Press
   • Press to set the current time.If you wish to change the preprogrammed time/temperature settings, follow steps 2 through 6. If not, press the key until the End is displayed or the thermostat will automatically return to normal operational mode within five minutes.
2.  Set WAKE Time
   • Press
   • Press or set desired WAKE time.
3. Set WAKE Temperature
   • Press
   • Press to set desired WAKE temperature.
4. Set SLEEP Time
   • Press
   • Press or to set desired SLEEP time.
5. Set SLEEP Temperature
   • Press
   • Press or set desired SLEEP temperature.
6. Run Program Press . The end is displayed for five seconds indicating the end of programming. The thermostat then displays the current time and room temperature.

OPERATE YOUR THERMOSTAT
Display Temperature Setting

• Press once to display the present temperature setting.
• After approximately five seconds, the thermostat displays the current time and room temperature.

Temporary Change

• Press or until the desired tempera-ture is displayed.
• TEMPORARY is displayed.
• The TEMPORARY change is in effect until the next program period.

NOTE : To cancel your TEMPORARY change, press until End is displayed.

Hold Function
To hold the thermostat at one temperature indefinitely, program both WAKE and SLEEP to the same temperature.

SET FAN AND SYSTEM SWITCHES
Manually control fan and system settings using the switches located at the top of the thermostat case. See Fig. 11 for switch locations.

Fan Switch

The FAN switch settings are:
ON: The fan runs continuously. Use for improved air circulation.
AUTO: Normal setting for most homes. In cooling, the fan starts and stops with the cooling equipment. In heating, the fan is controlled directly by the heating equipment and starts a few minutes after the heating equipment turns on (on most systems). When the thermostat fuel switch is set to the E position for electric heat, the fan starts and stops with the heating equipment. Slide the switch on the thermostat to the desired fan setting.

System Switch

• The System switch settings control thermostat operation as follows:
• COOL: The thermostat controls the cooling system. OFF: Both heating and cooling are off.
• HEAT: The thermostat controls the heating system.
• Slide the System switch on the thermostat to the desired system setting.

CHECK OPERATION AFTER INSTALLATION/PROGRAMMING

Heating System

• Slide the System switch to HEAT and the Fan switch to AUTO.
• Press and hold the key to raise the temperature several degrees above the room temperature to start the heating equipment. When using the thermostat with the fuel switch set to the E position for electric heat, the fan starts immediately.
• Press the key to lower the temperature setting below the room temperature. The heating equipment should stop.

Cooling System CAUTION
Operating at too low of an outdoor temperature may cause compressor damage
Damage to compressor possible.
Do not operate the cooling system if the outdoor tempera-ture is below 50°F (10°C). Refer to manufacturer recommendations.

IMPORTANT Temporary protection delay protects the compressor; the thermostat allows the compressor to remain off for five minutes before restarting.

• Slide the System switch to COOL and the Fan switch to AUTO.
• Press the key to lower the temperature setting several degrees below the room temperature to start the cooling equipment.
• Press the key to raise the temperature setting above the room temperature. The cooling equipment should shut down.

Fan

• Slide the System switch to OFF and the Fan switch to ON. The fan should run continuously.

CUSTOMIZE YOUR THERMOSTAT
The following instructions provide the information necessary to change the heating cycle rate to match your heating equipment; choose Fahrenheit (°F) or Celsius C); and a 12- or 24-hour clock. To exit at any time, press until End is displayed.

1. Enter Installer Setup
   • Slide System switch to OFF position.
   • Use the or keys to set the temperature setpoint to 52°F (11°C).
   • After the thermostat reverts back to displaying room temperature  (approximately five seconds), simultaneously
   • Press and keys and hold for three seconds. Release the keys after the display changes.
   • Press within five seconds. The display changes to show the current cycle rate setting.
2. Cycles Per Hour
   • Use or select 1, 3, 6, or 9 cycles per hour (mph). Refer to Table 3.
   • Press to display the current °F or °C setting.
3. Fahrenheit – Celsius Temperature
   • Use or choose between °C and °F.
   • Press to display the current 12- or 24-hour clock setting.
4. Clock Format
   • Use or choose either a 12- or 24-hour clock format Press once to exit the
   • Installer Setup. Upon exiting, the temperature setting will be at 52°F (11°C). Pressing six times returns the thermostat to normal operational mode. The end appears in the display.
5.  The slide system switches to the desired position.

Table 3. Heating Cycle

TROUBLESHOOT YOUR THERMOSTAT

power to heating/cooling equipment:

—   On/Off switch

—   Fuse or circuit breaker

—   Loose 24V connection: At thermostat; at furnace/air conditioner

—   Incorrect wiring: check appropriate wiring diagram.

Thermostat inoperative.| See checkout section.
System switch on thermostat in wrong position.| Reset System switch.
Thermostat minimum-off times operating for cooling.| Wait five minutes or follow steps in Checkout section.
Incorrect wiring.| Check wiring.
Heating/cooling equipment inoperative.| Consult equipment manufacturer instructions.
Partial display| Inoperative thermostat.| Replace thermostat.
Still in installer setup mode.| See Installer Setup section for exit instructions.
No display| No power to thermostat.| Check power to thermostat.
Thermostat mounted incorrectly on wallplate.| See installation instructions for correct mounting.
Temperature display is incorrect| Thermostat is configured for °F or °C.| Reconfigure the display. See Installer Setup section for instructions to change the display.
Cannot change temperature setting| The upper or lower temperature limits were reached.| Check the temperature setpoints; temperature setting range is 40°F (4°C) to 99°F (37°C).

PERCENT OF HEATING

• COSTS YOU CAN SAVE
• SAVINGS FOR ONCE-A-DAY
• 10°F (5°C) DECREASE*

PERCENT OF COOLING

• COSTS YOU CAN SAVE
• SAVINGS FOR ONCE-A-DAY
• 10°F (5°C) INCREASE*

Limited One-Year Warranty

Honeywell warrants this product 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 the 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 HoneywellÕs option) within a reasonable period of time. If the product is defective,
(i) Return it, with a bill of sale or other dated proof of purchase, to the retailer from which you purchased it, or
(ii) package it carefully, along with proof of purchase (including date of purchase) and a short description of the malfunction, and mail it, postage prepaid, to the following address:
Honeywell, Inc. in Canada: Honeywell, Limited/Honeywell Limited
Return Goods Department Product Services ON15-FFE
1050 Berkshire Lane 155 Gordon Baker Road

Plymouth, MN 55441-4437 North York, Ontario M2H 3N7
This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage that occurred while the product was in the possession of a consumer. HoneywellÕs 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 resulting, directly or indirectly, from any breach of any warranty, expressed or implied, or any other failure of this product. Some states do not allow the exclusion or limitation or incidental or consequential damages, so this limitation may not apply to you. This warranty is the only expressed warranty Honeywell makes on this product. The duration of any implied warranties, including the warranties of merchantability and fitness for a particular purpose is hereby limited to the one-year duration of this warranty. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. 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 our Customer Assistance Center, Honeywell, Inc., P.O. Box 524, Minneapolis, MN 55440-0524, Monday – Friday, 7:00 a.m. to 5:30 p.m., Central time. In Canada, write Retail Products ON15-02H, Honeywell Limited/Honeywell Limite, 155 Gordon Baker Road, North York, Ontario M2H 3N7.

Home and Building Control
Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis, MN 55408-0524

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