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T8000C, T8001C,T8024D
Programmable Thermostats
PRODUCT DATA
FEATURES
• Attractive styling complements any decor to the
homeowner s delight.
• Preprogrammed for your convenience.
• Program up to four time periods and temperature
setpoints to complement your lifestyle.
• Programs are permanently held in non-volatile memory
in the event of a power failure.
• Indefinite setpoint temperature hold for added comfort
and energy savings.
• Ease-of-use means fewer homeowner questions and
increased homeown
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T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS Cycle Rates (at 50% Load): SPECIFICATIONS Heating: Selectable at 1, 3, 6, 9 or 12 cph. See Heating Cycle Rates, Table 1, for cycle rate options and IMPORTANT corresponding system equipment. The specifications given in this publication do not Cooling: Fixed at 3 cph. include normal manufacturing tolerances; therefore, an individual unit might not exactly match the listed Finish: specifications. Also, this product is tested and T8000C and T8024D T
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T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS INSTALLATION MERCURY NOTICE If this control is replacing a control that contains When Installing this Product… mercury in a sealed tube, do not place your old control in the trash. Dispose of it properly. 1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous Contact your local waste management authority for condition. instructions regarding recycling and the proper 2. Check the ratings given i
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T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS Refer to Fig. 6 through 10 for typical wiring hookups. WALL WALL TERMINAL FOR STRAIGHT FOR WRAPAROUND ANCHORS (2) SCREW INSERTION STRIP STRIP 7/16 IN. (11 MM) 5/16 IN. (8 MM) G C W2 R Y2 MOUNTING WALLPLATE SCREWS (2) M12202 W1 Fig. 3. Mounting wallplate to wall. B Y O Wiring IMPORTANT M20212 Use an 18-gauge maximum wire for wiring the Fig. 4. Wiring connections. thermostats. KEEP WIRING IN All wiring must comply with local electrical codes and
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T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS T8000C THERMOSTAT T8000C THERMOSTAT G G Rc Rc 3 R 1 R W W B Y B O Y 2 O ZONE 1 HEAT COOL O1 RELAY T8 DAMPER 2 G1 T7 1 COMPRESSOR FAN HEAT L1 CONTACTOR RELAY DAMPER B1 (HOT) T6 L2 E1 T5 TRANSFORMER CHANGEOVER CONTROL T4 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 1JUMPER R TO RC. M12563 2 CAN BE USED FOR CHANGEOVER VALVE ON SINGLE-STAGE HEAT PUMP SYSTEMS. Fig. 8. T8000C heat-cool wiring diagram on a JUMPER R TO R
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Auto On SYSTEM Auto On Hold Cool Off Heat Select FAN SYSTEM Hold Cool Off Heat Select FAN PM TUE T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS DASHED LINES INDICATE TABS T8024 THERMOSTAT ON BACK OF THERMOSTAT G C W2 R Y2 W1 B Y O STAGE- TWO COOL- STAGE- ING ONE HEAT COOL STAGE- RELAY DAMPER TWO 1 HEAT FAN STAGE ONE HEAT RELAY L1 RELAY COOLING DAMPER (HOT) L2 TRANSFORMER A ENGAGE TABS AT TOP OF THERMOSTAT 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD WITH SLOTS ON WALLPLATE.
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T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS 4. Setting 2nd Stage Heat Cycle Rate (see Table 1) for the Optional System Checkout cycle rate options and When in steps 1c and 1d only, pressing the ▼ key can be equipment). used to turn heat or cool outputs on and off. Change the a. Press the ▲ key to SYSTEM switch setting to test heat or cool outputs. No display the current action takes place If the system switch is in the Off heat cycle rate setting position. M12588A of 1, 3, 6, 9, or 12 cp
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Auto On SYSTEM Hold Cool Off Heat Select FAN SLEEP T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS Setting the Current Time and Day OPERATION 1. To Set Current Time. SET a. Press Select twice. Setting FAN and SYSTEM Switches PM b. Press ▲ or ▼ to set Fan and system settings are controlled manually by using the current time. While setting switches located at the bottom of the thermostat case. See the current time, the word M12591A Fig. 14. SET is displayed. 2. To Set Day of Week. a. Press
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T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS 6. SLEEP 11. End Programming. a. Press Select. Press Select. End is Press ▲ or ▼ to set displayed. Programming is SLEEP time. complete. The thermostat will revert to displaying the M12630A M12511A current day, time and b. Press Select. temperature in five seconds. Press ▲ or ▼ to set SLEEP temperature. NOTE: To reset the thermostat to the preprogrammed time and temperature settings (see Table 1): 1. Press and hold the Hold and Select keys M12631
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T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS thermostat, the fan starts and stops with the heating Cooling equipment. In cooling, the fan starts and stops with the cooling equipment. CAUTION Make certain all equipment responds properly to the Damage To Compressor Possible. thermostat. Operating at too low of an outdoor temperature may cause compressor damage. Power Stealing Do not operate cooling if outdoor temperature is below 50°F (10°C). Unlike hard wired thermostats which are powered d
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T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS THERMOSTAT WALLPLATE SYSTEM COMPONENTS L1 (HOT) R POWER SUPPLY L2 SYSTEM 1 SWITCH C LOGIC/ CONTROL HEAT RELAY CIRCUIT W HEAT OFF HEAT CHANGEOVER RELAY COOL STAGE 1 B HEAT OR COOL COOL CHANGEOVER K1 RELAY O COMPRESSOR RELAY Y FAN SWITCH FAN RELAY ON EF G FUEL AUTO SWITCH M11731 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. Fig. 16. T8001C hardwired internal schematic. THERMOSTAT Sequence of Operations The Fan,
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T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS TROUBLESHOOTING T8000/T8001 SYMPTOM POSSIBLE CAUSE ACTION HEATING OR COOLING EQUIPMENT • CHECK THAT C TERMINAL IS CONNECTED TO NO AC POWER TO THERMOSTAT. WON'T OPERATE. THE SYSTEM TRANSFORMER (T8001 ONLY). • CHECK POWER TO HEATING AND COOLING EQUIPMENT – ON/OFF SWITCH – FUSE OR CIRCUIT BREAKER – LOOSE 24V CONNECTION AT THERMOSTAT AT FURNACE/AIR CONDITIONER – INCORRECT WIRING (SEE WIRING DIAGRAM) THERMOSTAT INOPERATIVE. CONDUCT SELF-TEST; SEE CH
