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®
T8665A Chronotherm IV
Deluxe Programmable
Wireless Thermostat
INSTALLATION INSTRUCTIONS
APPLICATION
The T8665 Chronotherm® IV Wireless Thermostat Module. Refer to Table 1 for a general description of the
provides electronic control of 24 Vac heating and cooling thermostat. The T8665A Thermostats are battery-
systems. It must be used with a W8665 Receiver powered.
Table 1. T8665A Thermostat Description.
T8665 System Changeover System Selection Fan Selection Comments
A Heat-Cool Automatic Heat
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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT Mounting Thermostat 1. Engage tabs at the top of the thermostat and wall- plate. See Fig. 3. 2. Press lower edge of case to close and latch. NOTE: To remove the thermostat from the wall, first pull YES out at the bottom of the thermostat; remove top NO last. NO 5 FEET [1.5 METERS] NO A. ENGAGE TABS AT TOP OF M10106 THERMOSTAT AND WALLPLATE. Fig. 1. Typical thermostat location. WALL B. PRESS LOWER EDGE OF CASE M14628 TO LATCH.
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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT • configure Installer Setup, Using Thermostat Keys • check self-test, The thermostat keys are used to: • set the system operation, • set current day and time. • set the fan operation. • program times and setpoints for heating and cooling. See Fig. 4 for key locations. • temporarily override program temperatures • display present setting, SET RETURN TIMES INCREASE TEMPERATURE SET WAKE TIMES SET LEAVE TIMES INCREASE TIME SETTING A
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Zone 1 Zone 2 Zone 3 T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT 5. Attach the zone number stickers, included with the thermostat, onto the thermostat case on the inside of the thermostat cover. See Fig. 5. Time Set Program Run Set Current Wake Leave Return Sleep Program Day/Time System Heat/Cool Hold Temp Day System Fan Settings Daylight Copy Time Fan Place one label inside each thermostat door. M13426 Fig. 5. Zone stickers included with T8665A Thermostat. M14625 Fig. 6. T
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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT INSTALLER SETUP NOTE: For most applications, the thermostat factory- settings do not need to be changed. Review the factory default settings in Table 3 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 and system changeover. Installer Setup numbers are listed in Table 3. The table i
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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT Table 3. Thermostat Installer Setup Options. Installer Setup Other Choices Number Factory Setting (Press or key to change) (Press Time key to Actual Select change) Display Description Display Description Setting Not used 1 — — — — — a 2 0 Conventional 1 Heat pump or electric heat Fan operation applications where applications where equipment controls thermostat controls fan fan operation in heat operation in heat mode mode Not
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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT Table 3. Thermostat Installer Setup Options. (Continued) Temperature 34 90 Highest setpoint 40 to 89 Temperature range (1°F range stops in heating can be set increments) heating heating to setpoint can be set to Temperature 35 45 Lowest setpoint 46 to 99 Temperature range (1°F range stops in cooling can be set to increments) cooling cooling setpoint can be set to Not used 36 — — — — — Temperature 37 0 No difference in 3 thru 1—Di
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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT Setting Current Day and Time 1. Press Set Current Day/Time. Set Day/Time AM NOTE: On initial powerup or after an extended power Time Set Program Set Current Run Day/Time Wake Leave Return Sleep Daylight Program loss, 1:00 pm flashes on the display until a key Time Hold Temp Day Heat/Cool System Fan Tue Settings Daylight DST Time Copy is pressed. M14622 4. Press Run Program. Set Day/Time PM System Time Set Program Heat Run Set Curre
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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT INSTALLER SYSTEM TEST Use the Installer System Test to check the thermostat operation. Refer to Table 4 for a list of the available Installer System Tests. System Wait Set Program Set Day/Time Temporary Setting Em Heat Off Recovery AM Cool Hold for PM Auto CAUTION Filter Em Ht Aux Ht Days Fan Equipment Damage Hazard. MonTue Wed Thu Fri Sat Sun Repl Batt Room Outdoor On Compressor damage can result if compressor Heat Cool Auto Wake
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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT Thermostat Information 1. Press the Time key to access the thermostat infor- mation. M14615 4. Press the increase key again to display the software revision number (example:001 = revision number 1). 5. Press the increase key again to display the M14613 EEPROM identification code (example: 314 = 2. Press the increase key to display the produc- EEPROM ID 314). tion date code. The first two large digits are the month and the thi
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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT TROUBLESHOOTING GUIDE For troubleshooting, see Table 6. Table 6. Troubleshooting Guide. Symptom Possible Cause Action Display does not Thermostat is not being Check if batteries are present and installed correctly. come on. powered. — If batteries are present and installed correctly, replace thermo- stat. Temperature Room temperature display Enter Installer Setup number 37 and reconfigure the display. display is has been reconfigured
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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT FCCID: CFS8DL5800STAT CANADA: 1748A12111 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. FEDERAL COMMUNICATIONS COMMISSION (FCC) STATEMENT This equipment has been tested to FCC requirements and has been foun
