Instruction/ maintenance manual of the product t8624d Honeywell
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® U.S. Regi stered T rademar k Copyright © 2002 Honeywe ll • • All Rights Reserved INSTALLATION INSTRUCTIONS 69-1412-1 T8624D Chronotherm ® IV Deluxe Programmable Multistage Thermostats APPLICATION The T8624D Chron otherm® IV Deluxe Prog rammable Multistage Thermostats provides electronic control of 24 V ac single-zone m ultistage systems.
T8624D CHRONOTHERM ® IV DELUXE PROGRAM MABLE MULTISTAGE THERMOSTATS 69-1412—1 2 Wallplate Installation The ther mostat can be mount ed horizontal ly on the wall or on a 2 in. x 4 in. (50.8 mm x 101.6 m m) wiring box. Position wallplate h orizontally on the wall o r on a 2 in.
T8624D CHRONOTHERM ® IV DELUXE PROGRAMMABLE MULTISTAGE THERMOSTATS 3 69-1412—1 Fig. 3. T ypi cal hookup of T8624D in a heat pump sy stem. Fig. 4. Correct wi ring technique. Mounting Thermosta t 1. Engage t abs at the top of the th ermostat and wal l- plate.
T8624D CHRONOTHERM ® IV DELUXE PROGRAM MABLE MULTISTAGE THERMOSTATS 69-1412—1 4 Fig. 6. T8624D k ey locations and descript ions. Using Thermostat Keys The thermo stat keys are use d to: • set cur.
T8624D CHRONOTHERM ® IV DELUXE PROGRAMMABLE MULTISTAGE THERMOSTATS 5 69-1412—1 INSTALLER SETUP NOTE: For most applicat ions, the therm ostat factory- settings will not ne ed to be chan ged. Review the facto ry settings in T abl e 2 and if no changes are necessary , go to the In staller System T e st section.
T8624D CHRONOTHERM ® IV DELUXE PROGRAM MABLE MULTISTAGE THERMOSTATS 69-1412—1 6 Adaptive Intelligent Recov ery™ control. 13 0 Adaptive Intelligent Recovery™ control is activa ted (system starts early so setpoint is reached by start of program per iod).
T8624D CHRONOTHERM ® IV DELUXE PROGRAMMABLE MULTISTAGE THERMOSTATS 7 69-1412—1 IMPORT A NT Review the setting s to confirm th at they match the system. Pres s Run Progra m to exit the Inst aller Setup. The thermostat ha s saved the Inst aller Setup c hanges and initia ted a reset in order to ope rate using the new setting s.
T8624D CHRONOTHERM ® IV DELUXE PROGRAM MABLE MULTISTAGE THERMOSTATS 69-1412—1 8 NOTE: If the current tim e is Daylight Savings Time, press Daylight Time until DST is displayed. 4. Press Run Prog ram. Viewing or Resetting Timer Settings When the thermo stat activates a timer, the thermostat flashes Filter un til the timer resets.
T8624D CHRONOTHERM ® IV DELUXE PROGRAMMABLE MULTISTAGE THERMOSTATS 9 69-1412—1 T able 5. In staller System T e st Option s. NOTE: Press a ny key and the disp layed number s will change. Press Time ∇ to go to the previous test and Time ∆ to go to the next te st.
T8624D CHRONOTHERM ® IV DELUXE PROGRAM MABLE MULTISTAGE THERMOSTATS 69-1412—1 1 0 THERMOSTAT INFORMATION 1. Press the Time ∆ key to access the thermostat information.
T8624D CHRONOTHERM ® IV DELUXE PROGRAMMABLE MULTISTAGE THERMOSTATS 1 1 69-141 2—1 TROUBLESHOOTING GUIDE T able 6. T roubleshooting Gu ide. Symptom Possible Ca use Action Display will not come on. Thermostat is not be ing powered. • Check for 24 V ac between R and C terminals.
69-1412—1 G .H. Rev . 12-02 www .ho neywell.com/yourhome T8624D CHRONOTHERM ® IV DELUXE PROGRAM MABLE MULTISTAGE THERMOSTATS Automation and Control Solutions Honeywell Honeywell Li mited-Honeywell .
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However, one of the most important roles played by the user manual is to help in solving problems with Honeywell t8624d. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell t8624d along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
