Owner's Manual
Page 1
..., Ontario Ml P 2V9. 35 TYPICAL ENERGY SAVINGS FOR REPRESENTATIVE CITIES IN THE U.S. 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 to repair or replace the product within a reasonable period of time. [t the product is defective, (i) retUrn it, with a bill of sale or...
..., Ontario Ml P 2V9. 35 TYPICAL ENERGY SAVINGS FOR REPRESENTATIVE CITIES IN THE U.S. 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 to repair or replace the product within a reasonable period of time. [t the product is defective, (i) retUrn it, with a bill of sale or...
Owner's Manual
Page 2
... items below ), do not place your old thermostat. Your new thermostat will automatically control the temperature in your new Honeywell MagicStat@ programmable thermostat. Direct any questions concerning the application of comfort and energy savings with your home, keeping you have questions, call Honeywell Inc. O 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 -
... items below ), do not place your old thermostat. Your new thermostat will automatically control the temperature in your new Honeywell MagicStat@ programmable thermostat. Direct any questions concerning the application of comfort and energy savings with your home, keeping you have questions, call Honeywell Inc. O 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 -
Owner's Manual
Page 3
... three thermostat wires. If you would like information about which programmable thermostats will work with hot water baseboard systems. Will not work , contact your new thermostat. U Disconnect wires from old thermostat. As you will ako not be labeled. Replacing a Clock Thermostat that is not connected to your system. System Type Gas-Standin~ Pilot Compatible With CT2400 Yes Gas-Electro~c Ignition Gas-Fired Boilers EA A Gas-Millivolt Oil-Fired Boilers OWired Furnace Electric Furnace Electric Air...
... three thermostat wires. If you would like information about which programmable thermostats will work with hot water baseboard systems. Will not work , contact your new thermostat. U Disconnect wires from old thermostat. As you will ako not be labeled. Replacing a Clock Thermostat that is not connected to your system. System Type Gas-Standin~ Pilot Compatible With CT2400 Yes Gas-Electro~c Ignition Gas-Fired Boilers EA A Gas-Millivolt Oil-Fired Boilers OWired Furnace Electric Furnace Electric Air...
Owner's Manual
Page 4
... battery power. Replace the batteries as soon as you want the house at a comfortable temperature for activities before bedtime. (Again, higher heat or lower cool.) "SLEEP" is the time period you can set for an energy-saving temperature while you insert the new batteries within a: E=l INSTALL TWO AA ALKALINE /BATTEFIIESASStiOIAIN 20 to lack of the thermostat and heating/cooling system. Press down on the wall. IMPORTANT: Although the thermostat has a low battery indicator, replace the batteries...
... battery power. Replace the batteries as soon as you want the house at a comfortable temperature for activities before bedtime. (Again, higher heat or lower cool.) "SLEEP" is the time period you can set for an energy-saving temperature while you insert the new batteries within a: E=l INSTALL TWO AA ALKALINE /BATTEFIIESASStiOIAIN 20 to lack of the thermostat and heating/cooling system. Press down on the wall. IMPORTANT: Although the thermostat has a low battery indicator, replace the batteries...
Owner's Manual
Page 5
... error at 78° F [26° C], 24 hours a day. 11 sleeping. (Again, lower heat or higher cool. Use of your requirements will set any higher than 88° F [31 0 C] or any lower than 45° F [7° C]. Fill in the times and temperatures you decide not to the weekend schedule. ~ The temperatures cannot be different for weekdays and weekends. Weekdays WAKE LEAVE RETURN SLEEP COOLING PROGRAM...
... error at 78° F [26° C], 24 hours a day. 11 sleeping. (Again, lower heat or higher cool. Use of your requirements will set any higher than 88° F [31 0 C] or any lower than 45° F [7° C]. Fill in the times and temperatures you decide not to the weekend schedule. ~ The temperatures cannot be different for weekdays and weekends. Weekdays WAKE LEAVE RETURN SLEEP COOLING PROGRAM...
Owner's Manual
Page 6
... a day. 11 --- - .- Weekdays WAKE LEAVE RETURN SLEEP COOLING PROGRAM Start Time Cooling Ternperature~ Weekends~ WAKE SLEEP ~ If you decide not to program the thermostat, it will automatically control heating at 68° F [20° C], and cooling at COOL, follow the same instructions as desired. When inserting batteries, set system switch to set time, press and release ~kwma~ once, 0 until current day shows; L-1 After programming, adjust fan and system switches as for Heating Program. to OFF. NOTE: Batteries are...
... a day. 11 --- - .- Weekdays WAKE LEAVE RETURN SLEEP COOLING PROGRAM Start Time Cooling Ternperature~ Weekends~ WAKE SLEEP ~ If you decide not to program the thermostat, it will automatically control heating at 68° F [20° C], and cooling at COOL, follow the same instructions as desired. When inserting batteries, set system switch to set time, press and release ~kwma~ once, 0 until current day shows; L-1 After programming, adjust fan and system switches as for Heating Program. to OFF. NOTE: Batteries are...
Owner's Manual
Page 7
... _ Adjust Fan Operation Switch, As Required D The thermostat fan operation switch, labeled FUEL SWITCH (see each time and temperature; ately with the heating or cooling in the "F position. q Electric Furnace-Leave at next scheduled change .) D Check Programs- ~~Uk repeatedly to normal program or start program - To cancel sooner, press P~& o Temp Warmaf n ; Time then Pro ogRruan m . (1 c1 Cancel a Program- ~~~Ub until program to perform the following: Temp u- u Return to see illustration on page 17) is factory-set in a system where the "G" terminal is...
... _ Adjust Fan Operation Switch, As Required D The thermostat fan operation switch, labeled FUEL SWITCH (see each time and temperature; ately with the heating or cooling in the "F position. q Electric Furnace-Leave at next scheduled change .) D Check Programs- ~~Uk repeatedly to normal program or start program - To cancel sooner, press P~& o Temp Warmaf n ; Time then Pro ogRruan m . (1 c1 Cancel a Program- ~~~Ub until program to perform the following: Temp u- u Return to see illustration on page 17) is factory-set in a system where the "G" terminal is...
Owner's Manual
Page 8
... temperature control. LEVEL ( HI la El ) II '' ,[ ~: ,1= M1714A 19 Cycles would not be long enough for appearance only; u Reposition mounting plate over holes, pulling wires through wiring opening. Use a level to mark the two mounting holes. E [G- Use a pencil to make sure mounting plate is level. thermostat will function properly even when not level. NOTE: This thermostat does not have a setting for steam/gravity air...
... temperature control. LEVEL ( HI la El ) II '' ,[ ~: ,1= M1714A 19 Cycles would not be long enough for appearance only; u Reposition mounting plate over holes, pulling wires through wiring opening. Use a level to mark the two mounting holes. E [G- Use a pencil to make sure mounting plate is level. thermostat will function properly even when not level. NOTE: This thermostat does not have a setting for steam/gravity air...
Owner's Manual
Page 11
... remove thermostat from wall, first pull out at bottom of thermostat, removing top last. *4 mm Check Thermostat Operation After Programming And Installing HEATING Do not check heating system operation by jumpering thermostat terminals at the thermostat. Temp Warmer c1 Temp Cooler o 25 Move the system switch to HEAT and the fan switch to AUTO. Press key until the setting is about 10° F [6° C] below room temperature. Instead, jumper R and W wires at the primary control such as the gas...
... remove thermostat from wall, first pull out at bottom of thermostat, removing top last. *4 mm Check Thermostat Operation After Programming And Installing HEATING Do not check heating system operation by jumpering thermostat terminals at the thermostat. Temp Warmer c1 Temp Cooler o 25 Move the system switch to HEAT and the fan switch to AUTO. Press key until the setting is about 10° F [6° C] below room temperature. Instead, jumper R and W wires at the primary control such as the gas...
Owner's Manual
Page 12
.... COOL: The thermostat controls your heating system. Move the system switch to COOL and the fan switch to "E" position (see page 16), fan will run on high with air conditioner and on the air conditioner. FAN ON: The fan runs continuously. NOTE: When cooling setting is set the fan switch. Temp Coolar n Temp Warmer n 26 Press key until the setting is connected to five minutes before turning on low with 'air conditioner or furnace. The Fan And System Switches ,tio on FAN AUTO: Normal setting for...
.... COOL: The thermostat controls your heating system. Move the system switch to COOL and the fan switch to "E" position (see page 16), fan will run on high with air conditioner and on the air conditioner. FAN ON: The fan runs continuously. NOTE: When cooling setting is set the fan switch. Temp Coolar n Temp Warmer n 26 Press key until the setting is connected to five minutes before turning on low with 'air conditioner or furnace. The Fan And System Switches ,tio on FAN AUTO: Normal setting for...
Owner's Manual
Page 13
.... If display is blank or says "bAt Lo," install fresh batteries. SYSTEM ON indicator is lit, but no heat is lit, contact Honeywell Consumer Assistance at the wrong times. If air conditioner comes on . If 2- Gently clean battery contacts using a soft pencil eraser. Check the program times for correct wiring and good connections. If cooling does not come on , compressor may have reached the temperature setting limit. s Press RUN PROGRAM key to reset thermostat. See I f desired, change occurs...
.... If display is blank or says "bAt Lo," install fresh batteries. SYSTEM ON indicator is lit, but no heat is lit, contact Honeywell Consumer Assistance at the wrong times. If air conditioner comes on . If 2- Gently clean battery contacts using a soft pencil eraser. Check the program times for correct wiring and good connections. If cooling does not come on , compressor may have reached the temperature setting limit. s Press RUN PROGRAM key to reset thermostat. See I f desired, change occurs...
Owner's Manual
Page 14
... Honeywell Customer Assistance toll-free at 1-800-4681502, Monday-Friday, 7:00 a.m. -5:30 p.m. NOTICE This equipment is needed, call , please have the following information available: thermostat model number and date code, kind of heating/cooling system (i.e., hot water, warm air, oil, gas, etc.), and number of wires connected to differ on -time according to within t 10. The furnace cycles too frequently, or the system cycle length is factory-calibrated, and cannot be adjusted...
... Honeywell Customer Assistance toll-free at 1-800-4681502, Monday-Friday, 7:00 a.m. -5:30 p.m. NOTICE This equipment is needed, call , please have the following information available: thermostat model number and date code, kind of heating/cooling system (i.e., hot water, warm air, oil, gas, etc.), and number of wires connected to differ on -time according to within t 10. The furnace cycles too frequently, or the system cycle length is factory-calibrated, and cannot be adjusted...