Honeywell T8602C Thermostat User Manual
Contents
1. To scroll the Installer Setup numbers backwards press the Time V key To exit the Installer Setup press Run Program FACTORY SETTING OR OTHER CHOICE DISPLAY COLUMN 3 OR 5 OF TABLE 3 INSTALLER SETUP NUMBER DISPLAY COLUMN 2 OF TABLE 3 M14618 Fig 9 Display of Installer Setup number and setting A CAUTION Electric heat systems must be configured to 1 in Installer Setup number 2 to prevent equipment damage caused by the system running without the fan IMPORTANT Only configurable numbers are shown on the device Example If thermostat does not have a system key Installer Setup Number 12 will not be displayed Review Table 3 factory settings and mark any desired changes in the Actual Setting column When Installer Setup is complete review the settings to contirm that they match the system 69 1567 T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS Table 3 Thermostat Installer Setup Options Installer Setup g Number Press Other Choices Time A Factory Setting Press A or W key to change Actual Ee a ae ent MTR Fan operation Conventional applica Heat pump or electric heat tions where equipment applications where thermostat controls fan operation controls fan operation in heat in heat mode mode Heating cycle 6 6 cph used for 1 1 cph used for radiant floor rate conventional heat 9 heat gravity system 3 3 cph used for hot water systems or high efficiency furnaces2. on indicator Fan operation set for 0 con Enter Installer Setup number 2 and reconfigure the fan flame heat ventional heat when it should operation snowflake cool is be set for 1 electric heat displayed butno Conventional heating Wait a minute after seeing the on indicator and then check the warm or cool air is equipment turns on the fan registers coming from the when the furnace has registers warmed up to a setpoint Heating or cooling equipment is Verify operation of heating or cooling equipment in self test not operating Outdoor tempera Option not activated Enter Installer Setup number 24 and set to 1 Thermostat must ture not displayed have OT terminals and a C7089B1000 installed Outdoor Outdoor sensor is connected Refer to C7089B1000 installation instructions and check wiring temperature incorrectly between the thermostat and sensor display is incorrect Replace sensor with C7089B1000 sensor Thermostat Backlight may fade over the life e Wait unit Replace Battery indicator is illuminated and nee appears of the batteries replace batteries mk e Replace batteries now 4 Select models 69 1567 10 11 69 1567 Honeywell Home and Building Control Home and Building Control Honeywell Honeywell Limited Honeywell Limit e 1985 Douglas Drive North 35 Dynamic Drive Golden Valley MN 55422 Scarborough Ontario MIV 4Z9 69 1567 G H 8 01 Printed in Taiwan R O C www honeywell com yourh
3. 9 9 cph used for electric heat systems Ce Se ee ee ce ee el 13 1 Conventional recovery Adaptive Intelligent system starts Recovery control is recovery at activated system starts early programmed time so setpoint is reached by start of program period Nowwsed aaa A Gooktomat 16 0 Fereuraecktormat 1 faror ooma mwe mw _ Outdoor 24 No outdoor Outdoor temperature is temperature temperature is displayed Needs a display select displayed C7089B1000 Outdoor Sensor 3 to operate Minimum off 5 minute minimum off O thru 4 Minimum number of minutes time for the time for the 0 thru 5 the compressor will compressor compressor be off between calls for the compressor Temperature z Highest setting for Temperature range 0 5 C range stops in heating setpoint increments heating setpoint can be set to Temperature Lowest setting for Temperature range 0 5 C range stops in cooling setpoint increments cooling setpoint can be set to display displayed temperature 1 higher than actual room adjustment and actual room temperature temperature 1 0 Display adjusts to 1 0 C higher than actual room temperature 1 5 Display adjusts to 1 5 C higher than actual room temperature 5 Display adjusts to 0 5 C lower than actual room temperature 1 0 Display adjusts to 1 0 C lower than actual room temperature 1 5 Display adjusts to 1 5 C lower than act
4. Honeywell T8602C Chronotherm IV Deluxe Programmable Thermostats INSTALLATION INSTRUCTIONS APPLICATION The T8602 Chronotherm IV Deluxe Programmable a general description of the thermostat All T8602 Thermostat provides electronic control of 24 Vac single thermostats are powered by batteries stage heating and cooling systems Refer to Table 1 for Table 1 Description of T8602 Thermostats System Fan T8602 System Changeover Selection Selection Comments C Heat Cool Manual Heat Off Cool On Auto System and fan selections are done by keyboard i Location M E RC U RY NOTI C E Install the thermostat about 1 5m 5 ft above the floor in If this control is replacing a control that contains an area with good air circulation at average temperature mercury in a sealed tube do not place your old See Fig 1 control in the trash Dispose of properly Do not install the thermostat where it can be affected by Contact your local waste management authority drafts or dead spots behind doors and in corners for instructions regarding recycling and the hotorcold air from ducts proper disposal of the old thermostat radiant heat from sun or appliances concealed pipes and chimneys unheated uncooled areas such as an outside wall INSTALLATION behind the thermostat Wallplate Installation When Installing this Product The ee can be mounted horizontally on the wall 1 Read these instructions carefu
5. TION DAYLIGHT SAVINGS Sauce Keniry AND STANDARD TIME copy ONE PROGRAMMED DECREASE TIME SETTING OR DAY TO ANOTHER DAY SCROLL BACKWARD THROUGH HEATING AND COOLING SETPOINTS fade INSTALLER SETUP AND SYSTEM TEST Fig 6 T8602C key locations and descriptions SETTINGS System and Fan Settings The system default setting is Heat and the fan default setting is Auto Use the System and Fan keys to change the settings See Fig 7 The fan settings can be set for each program period individually The system selection is for all the program periods System settings control the thermostat operation as follows Heat The thermostat controls the heating Off Both the heating and cooling are off Cool The thermostat controls the cooling Fan settings control the system fan as follows On Fan operates continuously Auto Fan operates with equipment 69 1567 M14625 Fig 7 Thermostat System and Fan key locations NOTE Always press the keys with your fingertip or similar blunt tool Sharp instruments like a pen or pencil point can damage the keyboard T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS Temperature Settings Refer to Table 2 for the default program If the daytime energy savings period is not used press the period key Leave or Return until the time is blank The fan setting feature is available on select thermostat models See Owners Guide form number 69 0940 for complete instruc
6. UIDE Symptom Fossile Cause COW Display will not Thermostat is not being e Check if batteries are present and installed correctly come on powered If batteries are present and installed correctly replace thermostat Temperature Room temperature display has Enter Installer Setup number 37 and reconfigure the display display is incorrect been reconfigured Thermostat is configured for F Enter Installer Setup number 14 and reconfigure the display or C display Bad thermostat location Relocate the thermostat Temperature The upper or lower temperature Check the temperature setpoints settings will not limits were reached e Heating limits are 4 5 to 32 C change Example e Cooling limits are 7 to 37 C Cannot set the heating higher or The setpoint temperature range Check Installer Setup numbers 34 and 35 and reconfigure the the cooling lower stops were configured setpoint stops Heating will not No power to the thermostat e Check for 24 Vac between R and W terminals come on If missing 24 Vac check if the circuit breaker is tripped reset the circuit breaker check if the system fuse is blown replace the fuse check if the power switch on the HVAC equipment is in the Off position set to the On position check wiring between thermostat and HVAC equipment replace any broken wires and tighten any loose connections If 24 Vac is present proceed with troubleshooting Thermostat minimum of
7. aller Setup number 2 is 1 the system fan is also energized Time Change from heating to cooling equipment system test Time Z Time Change from fan to key operation system test NOTE Press any key and the displayed numbers will change Press Time V to go to the previous test and Time to go to the next test The Run Program key will not exit this test Press Time A or Time and then the Run Program key to exit THERMOSTAT INFORMATION 4 Press the increase A key again to display the software revision number Example 001 1 Press the Time key to access the thermostat Revision number 1 information M14616 M14613 2 Press the increase s key to display the production F s P date code The first two large digits are the month 5 aon morea a key aganto Splay pe and the third digit is the last digit of the year identification code Example gt Example 027 February 1997 EEPROM ID 314 z z M14617 3 Press the increase A key again to display the software identification code Example 02 6 Press the Run Program key to exit the system software ID code 2 test The system test times out after four minutes without any key presses z a 69 1567 8 T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS CHECKOUT Outdoor Temperature Sensor Select Models Allow the outdoor temperature sensor to soak in the outdoor air for a minimum of five minutes before taking a reading TROUBLESHOOTING G
8. ase to close and latch NOTE To remove the thermostat from the wall first pull out at the bottom of the thermostat remove top last A ENGAGE TABS AT TOP OF THERMOSTAT AND WALLPLATE B PRESS LOWER EDGE OF CASE TO LATCH M14628 Fig 5 Mounting thermostat on wallplate Using Thermostat Keys The thermostat keys are used to set current day and time program times and setpoints for heating and cooling temporarily override program temperatures display present setting configure Installer Setup check Self Test display outdoor temperature select models set the system operation set the fan operation 69 1567 T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS See Fig 6 for the location of the keys INCREASE TIME SETTING SET WAKE TIMES SET LEAVE TIMES SET RETURN TIMES INCREASE TEMPERATURE OR SCROLL FORWARD AND SETPOINTS AND SETPOINTS AND SETPOINTS SETTING OR SCROLL THROUGH INSTALLER SETUP INSTALLER SETUP OPTIONS AND SYSTEM TEST y DECREASE TEMPERATURE SET CURRENT A SETTING OR SCROLL DAY AND TIME BACKWARD THROUGH 2 INSTALLER SETUP OPTIONS RETURN TO E T Dis Lay INFORMATION NORMAL SUCH AS PRESENT OPERATIONS SETTINGS AND OUTDOOR TEMPERATURE ENTER INDEFINITE SET SLEEP TIMES ORTIMED x ED f Wake Leave Retum Sleep f AND SETPOINTS kT o ENE a SET CURRENT OR PROGRAM DAY Daylight E3 SELECT SYSTEM CHANGE BETWEEN se OPERA
9. bypassed during the Installer System Test Equipment damage can occur if the compressor is cycled too quickly Press and hold the increase A and decrease W keys at the same time until 10 appears All segments of the display will be displayed before the 10 appears See Fig 10 and 11 Table 4 Tests Available In The Installer System Test Test Number System Test Description 10 19 Heating equipment can be turned on and off 30 39 Cooling equipment can be turned on and off 40 49 Fan equipment can be turned on and off Oto Keyboard keys test 19 70 79 Thermostat information including date code and software versions are displayed Wait Re SSE Temporary Setting System hh a Heat sey pa a N H Recovery TH TITT AM Be ai Hold for Oean pa I uy ri wA my Auto Fitter ERT E Days T Fan MonTue Wed Thu Fri Sat Sun Repl Batt Room Outdoor A x On Wake Leave Return Sleep DST W Heat Cool A Auto M14559 Fig 10 Display of all LCD segments M14612 Fig 11 Display of test number 69 1567 T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS Refer to Table 5 for the directions and results of the A NOTE Press Time to advance to the next test and specific tests Time V to go back to the previous test Press Run Program to exit the system test Table 5 Installer System Test Options Press umber oeenn O O Press Number Description Heating Equipment System Test a m Heat comes on When Inst
10. f time is Wait up to five minutes for the system to respond activated System selection is not set to Set system selection to Heat Heat Heating setpoint is below room Check heating setpoint Set heating setpoint to desired temperature temperature continued 9 69 1567 T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS Troubleshooting Guide continued Cooling will not No power to the thermostat e Check for 24 Vac between R or RC and Y terminals come on If missing 24 Vac check if the circuit breaker is tripped reset the circuit breaker check if the system fuse is blown replace the fuse check if the power switch on the HVAC equipment is in the Off position set to the On position check wiring between thermostat and HVAC equipment replace any broken wires and tighten any loose connections If 24 Vac is present proceed with troubleshooting Thermostat minimum off time is Wait up to five minutes for the system to respond activated e Enter Installer Setup number 33 Reconfigure minimum off time if required System selection is not set to Set system selection to Cool Cool Cool setpoint is above room Check cooling setpoint Set cooling setpoint to desired temperature temperature Heating or cooling Heat or cool circuit is opening Add resistor in parallel with load or install interface relay come on momen up or becoming high tarily and shut off impedance System
11. lly Failure to follow or on a 50 8 mm x 101 6 mm 2 in x 4 in wiring box the instructions can damage the product or cause Position wallplate horizontally on the wall or on a a hazardous condition _ 50 8 mm x 101 6 mm 2 in x 4 in wiring box 2 Check the ratings given in the instructions and on the product to make sure the product is suitable 1 Position and level the wallplate for appearance for your application _ i only The thermostat will function properly even 3 Installer must be a trained experienced service when not level technician 4 After completing installation use these instruc tions to check out the product operation U S Registered Trademark Copyright 2001 Honeywell e All Rights Reserved 69 1567 T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS 1 5 METERS 5 FEET M10856 Fig 1 Typical location of thermostat WALL WIRES THROUGH WALL MOUNTING HOLES MOUNTING SCREWS M15044 Fig 2 Mounting the wallplate 69 1567 2 Use a pencil to mark the mounting holes See Fig 2 3 Remove the wallplate from the wall and drill two 4 76 mm 3 16 inch holes in the wall if drywall as marked For firmer material such as plaster drill two 5 56 mm 7 32 inch holes Gently tap anchors provided into the drilled holes until flush with the wall 4 Position the wallplate over the holes pulling wires through the wiring opening 5 Loosely insert
12. ome
13. the mounting screws into the holes 6 Tighten mounting screws WIRING All wiring must comply with local electrical codes and ordinances Refer to Fig 3 for typical hookup A letter code is located near each terminal for identification A CAUTION Disconnect power before wiring to prevent electrical shock or equipment damage 1 Loosen the terminal screws on the wallplate and connect the system wires See Fig 4 IMPORTANT Use 18 gauge color coded thermostat cable for proper wiring Securely tighten each terminal screw Push excess wire back into the hole Plug the hole with nonflammable insulation to prevent drafts from affecting the thermostat AON T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS THERMOSTAT OUTDOOR TEMPERATURE SENSOR A COOLING TRANSFORMER HEATING TRANSFORMER A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A JUMPER RC TERMINAL TO R TERMINAL WHEN INSTALLED ON A ONE TRANSFORMER SYSTEM A AVAILABLE ON SELECT MODELS OT WIRES MUST HAVE A SEPARATE CABLE FROM THE THERMOSTAT CABLE M10855 Fig 3 Typical hookup in heat and cool system with two transformers NG FOR STRAIGHT A WRAPAROUND INSERTION STRIP 7 16 IN 11 MM INSERTION STRIP 5 16 IN 8 MM M4826 Fig 4 Proper wiring technique Mounting Thermostat 1 Engage tabs at the top of the thermostat and wallplate See Fig 5 2 Press lower edge of c
14. tions on changing the program System Em Heat Wait EE Temporary Setting N 1 Recovery J Da a wl STi i Cl mc Cool Hold for p i VIL uy j cis mr Auto Fan Fiter EOLA EOE Days MonTue Wed Thu Fri Sat Sun Repl Batt Room Outdoor Wake Leave Retum Sleep Table 2 Default Program Settings M14559 Fig 8 Display of all the segments of the LCD n oe on DST WHeat Coola Auto Heat Cool Period Time Setpoint Setpoint INSTALLER SETUP NOTE For most applications the thermostat factory settings will not need to be changed Review the factory settings in Table 2 and if no changes are necessary go to the Installer Self Test section The Installer Setup is used to customize the thermostat to specific systems Some of the options include temperature display system changeover and outdoor temperature display Installer Setup numbers are listed in Table 3 The table includes all the configuration options and the factory settings for the T8602 A combination of key presses are required to use the Installer Setup feature To enter the installer setup press and hold the information key with the increase A and decrease W keys until the first number is displayed All display segments appear for approximately three seconds before the number is displayed See Fig 8 and 9 To advance to the next Installer Setup press the Time A key To change a setting use the increase A or decrease W key
15. ual room temperature Temperature No difference in f i j a Number 2 must be set to 1 to extend fan operation 69 1567 6 T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS IMPORTANT Review the settings to confirm that they match the system Press Run Program to exit the Installer Setup The thermostat has saved the Installer Setup changes and initiated a reset in order to operate using the new settings Be sure to set the current day and time immediately Setting Current Day and Time 1 Press Set Current Day Time NOTE On initial powerup or after an extended power loss 1 00 pm flashes on the display until a key is pressed D a a Set Current o s Day Time moa er eg M14619 2 Press Day until the current day is displayed NOTE Sun Sunday Mon Monday Tue Tuesday Wed Wednesday Thu Thursday Fri Friday Sat Saturday 3 Press Time A or Time V until the current time is displayed NOTE Tapping the Set Current Day Time changes the time in one hour increments NOTE If the current time is Daylight Savings Time press Daylight Time until DST is displayed M14623 INSTALLER SYSTEMTEST Use the Installer System Test to check the thermostat operation Refer to Table 4 for a list of the available system tests To start the system test A CAUTION The minimum off time for compressors is
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