Honeywell CT2700 User's Manual
Contents
1. mode No display No power to thermostat Check power to thermostat Partial display Thermostat mounted See installation instructions for correct mounting incorrectly on wallplate Reconfigure the display See Installer Setup section for instructions to change the display Check the temperature setpoints temperature setting range is 40 F 4 C to 99 F 37 C Thermostat is configured for F or C The upper or lower temperature limits were reached Temperature display is incorrect Cannot change temperature setting 7 69 1085 CT2700 AN ELECTRONIC ROUND PROGRAMMABLE THERMOSTAT PERCENT OF HEATING COSTS YOU CAN SAVE SAVINGS FOR ONCE A DAY 10 F 5 C DECREASE mmm 6 TO 8 HEAL Mmmm 9 TO 11 Mmm 12 TO 13 14 TO 15 16 TO 18 PERCENT OF COOLING COSTS YOU CAN SAVE SAVINGS FOR ONCE A DAY 10 F 5 C INCREASE COOL mm 7 TO 9 Mmmm 10 TO 11 Mmmm 12 TO 14 14 TO 19 YOUR SAVINGS DEPENDS ON HOME SIZE AND ACTUAL HEAT LOSS OR GAIN GEOGRAPHIC LOCATION FREQUENCY OF TEMPERATURES CHANGE AND RANGE IN DEGREES OF CHANGE M12545 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 Honeywell s2. displays the current time and room temperature 8 OPERATE YOUR THERMOSTAT Display Temperature Setting a Press or once to display present temperature setting After approximately five seconds the thermostat displays the current time and room temperature Temporary Change a Press or until the desired tempera ture is displayed b TEMPORARY is displayed The TEMPORARY change is in effect until the next program period TEMPORARY w IZ am ta NOTE To cancel your TEMPORARY change press until End is displayed 69 1085 CT2700 AN ELECTRONIC ROUND PROGRAMMABLE THERMOSTAT Hold Function To hold the thermostat at one temperature indefinitely program both WAKE and SLEEP to the same temperature 9 SET FAN AND SYSTEM SWITCHES Manually control fan and system settings using the switches located at the top of the thermostat case See FAN SWITCH Fig 11 for switch locations TEMPERATURE DISPLAY SYSTEM SWITCH G3 A O DECREASE INCREASE SETTING SETTING M12523 Fig 11 CT2700 time temperature display and system fan switches Fan Switch The FAN switch settings are 1 0 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 th
3. the current 12 or 24 hour clock The display i changes to setting show current or Use or to choose either a 12 or 24 4 Clock Format a 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 the normal operational mode End appears in the display 2 Cycles Per Hour a Use or to select 1 3 6 or 9 cycles per hour cph Refer to Table 3 Table 3 Heating Cycle Rates System Program Setting cph 5 Slide system switch to desired position Hotwater baseboard High 3 efficiency 90 gas furnace Steam radiant floor heat 1 gravity TROUBLESHOOT YOUR THERMOSTAT Symptom Possible Cause Corrective Action Heating cooling No AC power to Check power to heating cooling equipment equipment will not thermostat On Off switch operate 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 Reset System switch thermostat in wrong position Thermostat minimum off times operating for cooling Wait five minutes or follow steps in Checkout section Heating cooling Consult equipment manufacturer instructions equipment inoperative Inoperative thermostat Replace thermostat Still in installer setup See Installer Setup section for exit instructions
4. ABLE 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 ROUTE WIRING AS SHOWN THROUGH ENTRANCE HOLE MOUNTING SCREW HOLE ALTERNATE MOUNTING SCREW HOLE ALTERNATE MOUNTING SCREW HOLE MOUNTING SCREW HOLE Fig 7 CT2700 wallplate wiring connections WIRING ENTRANCE HOLE M12529 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 permit insertion of straight or wraparound connections See Fig 8 Tighten the terminals FOR WRAPAROUND STRIP 7 16 INCHES 11 mm STRIP 5 16 INCHES 8 mm M12537 Fig 8 CT2700 methods for wiring connection Plug the hole in the wall with insulation to help prevent drafts from adversely affecting thermostat operation 69 1085 FOR STRAIGHT INSERTION 5 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 Th
5. Honeywell CT2700 An Electronic Round Programmable Thermostat USER S GUIDE TYPICAL LOCATION OF A MERCURY SWITCH IN A THERMOSTAT M10614 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 Programmable Heat and or Cool If you have questions call Honeywell Inc at Low Voltage 20 to 30 Vac Thermostat and Wallplate 1 800 468 1502 Model CT2700 1 PREPARE FOR INSTALLATION Congratulations on the purchase of your new thermostat Over 100 years of Honeywell engineering expertise went Check Table 1 to make sure this thermostat is into the making of this thermostat in an effort to provide compatible with your system If not return to the you with a more comfortable and convenient living retailer For more information call Honeywell Inc at environment 1 800 468 1502 Your new thermostat will automatically control the tem perature 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 U S
6. Registered Trademark Copyright 1997 Honeywell Inc All Rights Reserved 69 1085 CT2700 AN ELECTRONIC ROUND PROGRAMMABLE THERMOSTAT Table 1 Compatibility Chart System Type Compatible With CT2700 Gas Standing Pilot Gas Electronic Ignition Gas Fired Boilers Gas Millivolt Oil Fired Boilers Oil Fired Furnace Electric Furnace Electric Air Conditioning Baseboard Electric 120 240 Line Volt Heat Pumps Multistage Equipment Not compatible with any 120 240 volt circuit Not compatible with 2 wire White Rodgers no 1361 zone valves aNot compatible with millivolt systems bCompatible with 2 wire Honeywell zone valves Isolating relay required for 3 wire thermostats zone valves Acquire tools and items as needed See Fig 1 CROSS RECESSED SCREWDRIVER HAND OR POWER DRILL WITH 3 16 INCH DRILL BIT IF NEEDED TO DRILL HOLES IN WALL MASKING TAPE IF NEEDED TO LABEL WIRES AS DISCONNECTED FROM OLD THERMOSTAT ie l w LEVEL IF NEEDED TO LEVEL eras THERMOSTAT FOR APPEARANCE Fig 1 Required installation tools supplies WIRE CUTTER STRIPPER OR SHARP KNIFE IF NEEDED TO STRIP WIRES 2 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 op
7. 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 Limit e 155 Gordon Baker Road North York Ontario M2H 3N7 Honeywell Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc Honeywell Limited Honeywell Limit e Honeywell Plaza 155 Gordon Baker Road P O Box 524 North York Ontario Minneapolis MN 55408 0524 M2H 3N7 69 1085 R T 8 97 Printed in U S A
8. e 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 N 47 a Press Lit b Press or Zy nS to set current time If you wish to change the preprogrammed time tempera ture settings follow steps 2 through 6 If not press the key until End is displayed or the thermostat will automatically return to normal operational mode within five minutes 2 Set WAKE Time N 4 7 a Press Paina Da7 b Press or to set desired WAKE time Lint a 3 Set WAKE Temperature a Press b Press or wake to set desired WAKE temperature 4 Set SLEEP Time a Press ia Ft PM b Press or JT VN to set desired SLEEP time 5 Set SLEEP Temperature a e a Press ha A N b Press or SLEEP to set desired SLEEP temperature 6 Run Program Press End is displayed for five seconds indicating the end of programming The thermostat then
9. erate the cooling system when outdoor temperature is below 50 F 10 C CAUTION Be careful when handling wires during installation Damage to heating cooling system possible Disconnect power at furnace or at main breaker fuse box before starting operation Carefully unpack your new thermostat wallplate and decorator cover plate save 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 69 1085 Loosen screws holding thermostat to subbase wallplate to wall and lift away Disconnect wires from old thermostat or subbase As you disconnect each wire use masking tape to abel 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 WIRES THROUGH WALL OPENING M5136 Fig 2 Wrapping wires around pencil Replacing 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 av
10. ermostat 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 cooling system if outdoor tempera ture is below 50 F 10 C Refer to manufacturer recommendations IMPORTANT Temporary protection delay protects 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 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 equip ment 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 Fan to ON The fan should ru
11. is 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 immedi ately with the heating or cooling equipment in a system where the G terminal is connected FUEL SWITCH cc M12531 Fig 9 Fuel switch rear view of thermostat 6 MOUNT THERMOSTAT TO WALLPLATE Align the tab and connector pins at the top of the thermostat with the wallplate See Fig 10 DASHED LINES INDICATE TABS ON BACK OF A ALIGN TABS PINS AT TOP OF THERMOSTAT WITH WALLPLATE CONNECTOR B PRESS THERMOSTAT CASE M12530 STRAIGHT ON TO LATCH Fig 10 Mounting thermostat to wallplate CT2700 AN ELECTRONIC ROUND PROGRAMMABLE THERMOSTAT Press the thermostat straight on to the wallplate to latch NOTE To remove the thermostat from the wallplate grasp the thermostat on both sides and pull the thermostat straight out Restore power to the heating cooling system T PROGRAM YOUR THERMOSTAT The thermostat is preprogrammed for your convenience with the following time and temperature settings see Table 2 Table 2 Preprogrammed Time Temperature Settings Start Heating Cooling Period Time Setpoint Setpoint WAKE 6 00AM 70 F 21 C 78 F 25 5 C SLEEP 10 00 PM 62 F 16 5 C 82 F 28 C WAKE is the time period you want the house at a comfort able temperatur
12. n continuously CUSTOMIZE YOUR THERMOSTAT Slide the System switch to OFF and the Fan switch Slide the switch on the thermostat to the desired fan setting System Switch The following instructions provide the information neces sary to change the heating cycle rate to match your heating equipment choose Fahrenheit F or Celsius C and 12 or 24 hour clock To exit at any time press until End is displayed 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 69 1085 1 Enter Installer Setup a Slide System switch to OFF position b Use the amp or wai e Z Tlam L al keys to set the temperature setpoint to 52 F 11 C ia lha WAKE CT2700 AN ELECTRONIC ROUND PROGRAMMABLE THERMOSTAT 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 TEMPORARY wom o Dae l roe E WAKE b Press to display the current F or C setting 3 Fahrenheit Celsius Temperature a Use amp or to choose between C and F b Press to changes d Press within five seconds display
13. oid 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 other 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 CT2700 AN ELECTRONIC ROUND PROGRAMMABLE THERMOSTAT 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 3 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 WALL PLASTIC SCREW ANCHOR 2 DECORATOR COVER PLATE M12532 Fig 3 Mounting decorator cover
14. 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 Limit e 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 of reinstallation costs This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer 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 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
15. plate and wallplate to wall 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 4 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 HEATING PRIMARY CONTROL A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M12525 Fig 4 CT2700 wiring diagram 4 wire heat cool system T8700 A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M12543 Fig 5 CT2700 wiring diagram 2 wire heat only system COOLING CONTACTOR power SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M12544 Fig 6 CT2700 wiring diagram 3 wire cool only system IMPORTANT Use 18 gauge maximum wire to wire the thermostat 69 1085 CT2700 AN ELECTRONIC ROUND PROGRAMM
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