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®
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 an
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® T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS YES NO NO 1.5 METERS (5 FEET) NO M10856 Fig. 1. Typical location of thermostat. 2. Use a pencil to mark the mounting holes. See Fig. 2. WALL 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, WIRES drill two 5.56 mm (7/32 inch) holes. Gently tap THROUGH WALL anchors (provided) into the drilled holes until flush with the wall. 4. Position th
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® T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS THERMOSTAT Mounting Thermostat 1. Engage tabs at the top of the thermostat and RC YG W R OT OT wallplate. See Fig. 5. 2 3 2. Press lower edge of case to close and latch. COMPRESSOR HEAT CONTACTOR RELAY OUTDOOR NOTE: To remove the thermostat from the wall, first TEMPERATURE FAN SENSOR pull out at the bottom of the thermostat; RELAY remove top last. 1 L1 L1 (HOT) (HOT) L2 L2 1 HEATING COOLING TRANSFORMER TRANSFORMER 1 POWER SUPPLY. PROVIDE
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® T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS See Fig. 6 for the location of the keys. INCREASE TEMPERATURE SET LEAVE TIMES SET RETURN TIMES INCREASE TIME SETTING SET WAKE TIMES SETTING OR SCROLL AND SETPOINTS AND SETPOINTS AND SETPOINTS OR SCROLL FORWARD FORWARD THROUGH THROUGH INSTALLER SETUP INSTALLER SETUP OPTIONS AND SYSTEM TEST DECREASE TEMPERATURE SET CURRENT SETTING OR SCROLL DAY AND TIME BACKWARD THROUGH INSTALLER SETUP OPTIONS DISPLAY INFORMATION RETURN TO NORMAL
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® T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS Temperature Settings System Refer to Table 2 for the default program. If the daytime Wait Set Program Set Day/Time Temporary Setting Em Heat energy savings period is not used, press the period key Recovery AM Off (Leave or Return) until the time is blank. The fan setting Cool Hold for PM Auto feature is available on select thermostat models. See Filter Em Ht Aux Ht Days Fan Owners Guide, form number 69-0940, for complete MonTue Wed Thu Fri
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® T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS Table 3. Thermostat Installer Setup Options. Installer Setup Other Choices Number (Press Factory-Setting (Press or key to change) Time Actual change) Setting key to Select Display Description Display Description Not used. 1 — — ——— a 2 0 Conventional applica- 1 Heat pump or electric heat Fan operation . tions where equipment applications where thermostat controls fan operation controls fan operation in heat in heat mode. mode.
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® T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS IMPORTANT INSTALLER SYSTEM TEST Review the settings to confirm that they match the system. Press Run Program to exit the Use the Installer System Test to check the thermostat Installer Setup. The thermostat has saved the operation. Refer to Table 4 for a list of the available Installer Setup changes and initiated a reset in system tests. order to operate using the new settings. Be sure to set the current day and time immediately. To start
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® T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS Refer to Table 5 for the directions and results of the NOTE: Press Time to advance to the next test and specific tests. Time to go back to the previous test. Press Run Program to exit the system test. Table 5. Installer System Test Options. Key to Test Press Number Description Heating Equipment System Test Time 10 Enter heating equipment system test. 11 Heat comes on. When Installer Setup number 2 is 1, the system fan is also ene
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® 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 GUIDE Symptom Possible Cause Action Display will not Thermostat is not being • Check if batteries are present and installed correctly. come on. powered. — If batteries are present and installed correctly, replace thermostat. Temperature Room temperature di
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® T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS Troubleshooting Guide (continued) Symptom Possible Cause Action Cooling will not No power to the thermostat. • 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 thermo
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® T8602C CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS 11 69-1567
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Home and Building Control Home and Building Control Honeywell Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 69-1567 G.H. 8-01 Printed in Taiwan R.O.C. www.honeywell.com/yourhome
