Instruction/ maintenance manual of the product CHRONOTHERM IV DELUXE T8624D Honeywell
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T8624D Chronotherm ® IV Deluxe Programmable Thermostat PRODUCT DA T A ® U.S. Registered Trademark Copyright © 1997 Honeywell Inc. • All Rights Reserved APPLICA TION The T8624D Chronother m® IV Delux e Programmable Thermostat provides electronic control of 24 V ac multistage heating and cooling systems.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 2 ORDERING INFORMA TION When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor , ref er to the TRADELINE® Catalog or price sheets for complete ordering number .
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 3 Dimensions: See Fig. 1. INST ALLA TION When Installing this Product… 1. Read these instructions carefully . F ailure to follo w the instructions can damage the product or cause a hazardous condition.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 4 Fig. 2. T ypical location of thermostat. Fig. 3. Mounting the wallplate. 5 FEET [1.5 METERS] YES NO NO NO M10106 WIRING All wiring must comply with local electrical codes and ordinances.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 5 Ta b le 4. T erminal Designations and Descriptions. Fig. 4. Pr oper wiring technique. Mounting Thermostat W allplate The thermostat mounts on the wallplate after they are installed.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 6 SETTINGS Using Thermostat Keys The thermostat keys are used to: • set current da y and time, • program times and setpoints .
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 7 NO TE: Alwa ys press the keys with y our finger tip or similar b lunt tool. Shar p instr uments like a pen or pencil point can damage the ke yboard. Te mperature Settings Ref er to T able 5 f or the def ault program.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 8 Ta b le 6. Thermostat Installer Setup Options. Installer Setup Number (Press Time ▲ key to Factory-Setting Other Choices (Pre.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 9 Ta b le 6. Thermostat Installer Setup Options (continued). IMPORT ANT Re view the settings to confir m that they match the system. Press Run Program to e xit the Installer Setup .
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 10 2. Press Da y until the current day is displa yed. NO TE: Sun=Sunda y , Mon=Monday , T ue=T uesday , W ed=Wednesda y , Thu=Thursday , F ri=F r iday , Sat=Saturda y . Fig. 10. Displa y of all the segments of the LCD.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 11 Ta b le 8. Installer System T est Options. 3. Press the increase ▲ ke y again to display the softw are identification code. (Example: 02 = software ID code 2) NO TE: Press any ke y and the display ed numbers will change.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 12 PROGRAMMING The ke yboard is located behind the ther mostat cov er with three frequently used ke ys by the displa y . The ther mostat displa y shows day , time, program period, temperature , system and f an operation selection.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 13 Setting the Current Day and T ime IMPORT ANT Alwa ys press the ke ys with your finger tip or similar blunt tool. Shar p instr uments like pens and pencil points can damage the ke yboard.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 14 5. Press Heat/Cool Settings to s witch to other system temperature setpoint. NO TE: The progr am times are the same for both heating and cooling.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 15 4. Repeat steps 2 and 3 f or all the per iods to be cleared. 5. Press Run Program. Setting T emporary T emperatures Changing T emperature Setting Until the Next Program Period Press increase ▲ or decrease ▼ ke y until the desired temperature setpoint is displa yed.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 16 6. Press increase ▲ or decrease ▼ ke y to adjust the temperature setting, if desired.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 17 Operation Sequence The thermostat energizes specific ter minals depending what the F an and System are set to . The LCD will display the time , room temperature, system and f an selection.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 18 TROUBLESHOOTING GUIDE Ref er to T able 12 f or troub leshooting information. Ta b le 12. T roubleshooting Inf ormation. Symptom Possible Cause Action Display will not come on. Thermostat is not being powered.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 19 CROSS REFERENCE Ref er to T able 13 f or thermostat cross referencing inf or mation.
T8624D CHRONO THERM ® IV DELUXE PROGRAMMABLE THERMOST A T 68-0166—1 20 Honeywell Europe S.A. 3 Avenue du Bourget 1140 Brussels Belgium Honeywell Asia Pacific Inc.
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