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PRODUCT DATA

® U.S. Registered Trademark

T8000C, T8001C,T8024D

Programmable Thermostats

APPLICATION

The T8000C, T8001C and T8024D Programmable

Thermostats provide programmable temperature control for

24 Vac heating-cooling systems with manual changeover

from heat to cool. The T8000C and T001C provide single-

stage heating and cooling control and the T8024D provides

two-stage heating and two-stage cooling contorl. Heating

cycle rates are selectable at 1, 3, 4, 5, 6, 9, or 12 cph.

Cooling cycle rates are fixed at 3 cph. Temperature indication

can be set for °F or °C.

The T8000C is powered through the heating/cooling system

controls. The T8001C and T8024D are powered directly

through the system transformer.

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 homeowner satisfaction.

• Large temperature display for quick easy readability.

• Conveniently sized thermostat (5-1/2 x 3-1/2) with

optional decorator cover plates (7-3/8 x 5-3/4) make it

easy to install in a variety of locations.

• Keys are located by the display for easy access.

• FAN and SYSTEM switches are located on the lower

edge to eliminate accidental setting changes.

• Easy installation, setup and self-test saves time and

increases installer productivity.

• Manual changeover from heat to cool eliminates

unexpected system operation.

•

°F or °C temperature display for added model flexibility.

• Selectable heating cycle rate (1, 3, 4, 5, 6, 9 or 12 cph) for

a variety of applications which reduces the amount of

inventory.

• Cooling cycle rate is fixed (3 cph), the standard setting

for compressors, for speedy installation.

• Setpoints are permanently held in non-volatile memory

(no batteries required) and retained during power

outages for increased installer and homeowner

convenience.

• Power stealing and hardwired models available for

virtually all equipment and application needs including;

gas, oil and electric forced air, condensing gas furnaces,

forced air zoning systems, single stage heat pumps,

hydronic heat, gravity and radiant floor heat systems.

Contents

Application .......................................................................... 1

Features .............................................................................. 1

Specifications ...................................................................... 2

Ordering Information ........................................................... 2

Installation ........................................................................... 3

Installer Setup ..................................................................... 6

Operation ............................................................................ 8

Checkout ............................................................................. 9

Troubleshooting .................................................................. 12

68-0195-2

1 2 3 4 5 6 ... 11 12

Sommario

Pagina 1 - Programmable Thermostats

Pagina 2 - SPECIFICATIONS

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–210L1 (HOT)L21L1 (HOT)L21122POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION A

Pagina 3 - MERCURY NOTICE

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–211L1 (HOT)L211POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.SY

Pagina 4

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–22SYMPTOM POSSIBLE CAUSE ACTIONHEATING OR COOLING EQUIPMENTWON'T OPERATE.NO AC POWER TO

Pagina 5

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–22ORDERING INFORMATIONWhen purchasing replacement and modernization products from your TRADE

Pagina 6 - INSTALLER SETUP

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–23INSTALLATIONWhen Installing this Product…1. Read these instructions carefully. Failure to

Pagina 7

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–24M12202WALLWALL ANCHORS (2)WALLPLATEMOUNTING SCREWS (2)Fig. 3. Mounting wallplate to wall.

Pagina 8 - Setting the Weekday Program

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–25L1(HOT)L2M12561FANRELAYT8000C THERMOSTATCOMPRESSORCONTACTORTRANSFORMERCOOLDAMPER1POWER SUP

Pagina 9 - Setting Temperature Hold

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–26Fig. 11. T8024D multistage heat/cool wiring diagram.Setting Fan Operation (Fuel) SwitchThe

Pagina 10 - Power Stealing

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–27Optional System CheckoutWhen in steps 1c and 1d only, pressing the ▼ key can beused to tu

Pagina 11 - Sequence of Operations

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–28OPERATIONSetting FAN and SYSTEM SwitchesFan and system settings are controlled manually by

Pagina 12 - TROUBLESHOOTING T8000/T8001

T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS68-0195–296. SLEEPa. Press Select.Press ▲ or ▼ to setSLEEP time.b. Press Select.Press ▲ or ▼ to setS

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