PROGRAMMABLE THERMOSTAT BY HONEYWELL Weekday/Weekend (5-day/2-day) Programmable Heat and/or Cool Low Voltage (20 to 30 Vat) Thermostat and Mounting Plate Model CT2400 PROGRAMMING AND INSTALLATION INSTRUCTIONS Limited One-Year Warranty Honeywell warrants this prcduct, excluding battery, to be free from defects in the workmanship or materials, under normal use and sewice, for a pericxl of one (1) year from the date of purchase by tha consumer. If, at any lime during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at Honeywel~s option) within a reasonable period of time. [t the product is defective, (i) retUrn it, with a bill of sale or,other dated prcof of purchase, to the retailer from which you purchased it, or (ii) package it carefully, af0n9 wdh Proof of purchase (including date of purchaae) and a short description of the ma ffuncf ion, and mail it, postage prepaid, to the following address in Canada: Honeywell Limited/Honeywell Limit6e Honaywall Inc. Product Services ON 15-FFE Return Goods Department 74o Ellesmere Road 1050 13erkafdre Lane Plymouth, MN 55441-4437 Scarborough, Ontario Ml P 2V9 This warranty does not cover removal or reinstallation coats. 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, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states do not allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you. THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED wARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILIV AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE ONE YEAR DURATION OF THIS WARRANTY. Some states do not allow Ilmitafions on how long an implied warranty lasts, so the above limitation may not apply to you. This warranty givas you specific legal rights, and You may have other r!ghts 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 or call 1-800-468-1502, Monday-Friday, 7:00 a.m. to 5:30 p.m., Central time. In Canada, write Retail Products ON1 5-02H, Honeywell LimitecUHoneywell Limitee, 740 Ellesmere Road, Scarborough, Ontario Ml P 2V9. 35 TYPICAL ENERGY SAVINGS FOR REPRESENTATIVE CITIES IN THE U.S. AND CANADA u SaviW 2 3 so% ~za% for Gnc3-A.Oay u SawrQSfciTv4c=3A-CUIy' l&F [5-C] decrease. fi H l&F [5*C] d-- Q Thermostat patents pending. "~~ m lwF [50CI dncrease+~F [*C] deciease grfes WP+vxlmateiy 55 pemml ol these savings.) ~z,,~h Printed in U.S.A. G.S. 7-93 @Honeywell Inc. 1993 Welcome to the world of comfort and energy savings with your new Honeywell MagicStat@ programmable thermostat. 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.-53O p.m., Central time. @ RECYCLING THERMOSTAT If this thermostat is replacing a thermostat that contains mercury in a sealed tube (see illustration below), do not place your old thermostat in the trash. Contact your Jocal waste management authority for instructions regarding the recycling and proper disposal of your old thermostat. If you have questions, call Honeywell Inc. at 1-800-468-1502. Typical location of a mercury switch in a thermostat. --. w o 0 MERCURY SWITCH M3701 Table Of Contents STEP 1 Prepare For Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2 STEP 2 Remove Old Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 STEP 3 Install The Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 STEP 4 Program The Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 STEP 5 Adjust Fan Operation Switch, As Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 . . . . STEP 6 Adjust System On-Time, As Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 STEP 7 Mount Thermostat Mounting Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 STEP 8 Wire Thermostat Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2O . STEP 9 Mount The Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...24 STEP 10 Check Thermostat Operation After Programming And installing . . . . . . . . . . . . . . . . . . . . . . ...25 STEP 11 Set The Fan And System Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...27 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...29 Limited One-Year Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 1 -- u Acquire tools and items below as needed. Also purchase two AA alkaline batteries; we recommend Energizer batteries. ~ CROSS-RECESSED SCREWDRIVER iiAND DRILL DRILL DRILL "(~, OR POWER WITH 3/16 INCH BIT, IF NEEDED, TO HOLES IN WALL . T ~ WIRE CUTTEWSTRIPPER OR SHARP KNIFE, IF NEEDED, TO STRIP WIRES ~AsKING TAPE ,F NEEDED, TO Ll&EL WIRES AS DISCONNECTED FROM OLD THERMOSTAT UIall LEVEL, IF NEEDED, TO LEVEL THERMOSTAT FOR APPEARANCE ulEa-'-U M378B 3 ~ Prepare For Installation u Check Table 1 to make sure this thermostat is compatible with your system. If it is not, return to retailer. For more information, call Honeywell Customer Assistance, toll-free 1-800-468-1502. TABLE 1 -COMPATIBILITY CHART. Compatible With CT2400 System Type Yes Gas-Standin~ Pilot Gas-Electro~c Ignition EA A Gas-Fired Boilers Gas--Millivolt Y:AA Oil-Fired Boilers Yes OWired Furnace Yes Electric Furnace Yes Electric Air Conditioning No Baseboard Electric (120/240 Line Volt) No Heat PumpdMultistage Equipment .,-. -- -----., I-,- . . . ..L ---- .fin/n"n .._i. -:.-..:. lNoI compaurm WIIrI arly I al~+u VUIL cxrum. ~Compatible with 2-wire Honeywell zone valves. Isolating relay requiredfor3-wire thermostats for zone valves. Not compatible with 2-wire White-Rodgers no. 1361 valves. ~Compatible with hot water baseboard systems. Will not work efficiently on steam or gravity systems. 7 _ Remove Old Thermostat [1 Test to make certain that your heating and cooling systems 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 outdoor temperature is below 50° F[10° C]. u TURN OFF POWER to system at the furnace, or at the fuse/circuit breaker panel. U Carefully unpack your new thermostat and mounting plate; save the package of screws, instructions and receipt. U Remove cover from old thermostat. If it does not snap off when pulled firmly from the bottom, check for a screw used to lock on the cover. 4 u Loosen screws holding thermostat to subbase, wallplate or wall, and lift away. U Disconnect wires from 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 to be labeled. If there is an extra wire that is not connected to your old thermostat, you will ako not be connecting it to your new thermostat. Keep the wires from falling back into the wall by wrapping them around a pencil as shown. ----. . Replacing a Clock Thermostat that has C or Cl Clock Terminals? If you are replacing a Honeywell Chronotherm@ Thermostat, you may find one or two wires that go to the C or Cl clock terminals on the Chronotherm Thermostat wiring wallplate. Do not allow them to touch, or you may damage your transformer. Disconnect the wires and wrap them separately, using electrical tape. Do not wrap them together. Place the wires where they will not interfere with the operation of the new thermostat. Record the colors and terminal designation labels of the remaining wires. Six or more wires? If there are six or more wires (excluding clock wires attached to terminals), you most likely have a variation of a heat pump 5 -- or multistage system. The thermostat is not compatible with such systems so return the product to the place of purchase. If you would like information about which programmable thermostats will work with your system, call Honeywell Customer Assistance 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 will work with your system. However, some hot water (zoned) heating systems have three thermostat wires. The thermostat will not work without installing an isolating relay on these systems. For details, call Honeywell Customer Assistance at 1-800468-1502. _ Install The Batteries IMPORTANT: Batteries must be installed for programming and operation of the thermostat and heating/cooling system. u Purchase two AA alkaline batteries; nonalkaline batteries will not last as long, and may leak, causing damage to thermostat or wall surface. We recommend Energizer batteries. ·l Make sure the thermostat is set in the OFF position. El Use a coin to remove battery door. u Install the fresh batteries as shown, making sure positive and negative terminals are oriented correctly. O Replace battery door. 6 A \ M1779B As the batteries are running low, a "bAt Lo" indicator will flash for one to two months before batteries run out completely. Replace the batteries as soon as possible after the indicator starts flashing. If you do not replace the batteries sometime during the flashing "bAt Lo," the indicator will eventually stop -- flashing. "bAt Lo" will stay on without flashing, indicating the thermostat and heating/cooling system have stopped working and the batteries are almost completely dead. After the batteries are completely dead, the "bAt Lo" indicator will disappear, leaving a completely blank display. Press down on left ends of batteries to remove. If you insert the new batteries within 20 to 30 seconds of removing the old ones, you will not have to reprogram the thermostat. However, if the display is blank, the batteries are dead or incorrectly installed, and you will have to reprogram. See pages 12 and 13 to reprogram. IMPORTANT: Although the thermostat has a low battery indicator, replace the batteries once a year to prevent the thermostat and heatinrjcooling system from shutting down due to lack of battery power. As a precaution, when leaving home for longer than a month, change batteries before you leave to prevent the system from shutting down due to lack of battery power. a: INSTALL TWO AA ALKALINE /BATTEFIIESASStiOIAIN E=l M171 7 - Program The Thermostat After the batteries are installed, the thermostat can be easily programmed in your hand before it is installed on the wall. If you would prefer to program the thermostat after it is installed on the wall, skip to page 8, and return later to this programming section. The following personal programming chart (pages 10 to 11 ) may be helpful for planning your program schedule of time and temperature settings for various times of the day. Four ...