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T8601D CHRONOTHERM® IV DELUXE PROGRAMMABLE THERMOSTATS

69-1626

4

Fig. 8. T8601D key locations and descriptions.

SETTINGS

System and Fan Settings

The system default setting is Heat and the fan default 
setting is Auto. Use the System and Fan keys to change 

the settings. See Fig. 9. The fan settings can be set for 
each program period individually. The system selection is 

for all the program periods.

System settings control the thermostat operation as 
follows:

Heat: The thermostat controls the heating.

Off: Both the heating and cooling are off.
Cool: The thermostat controls the cooling.

Auto: The thermostat automatically changes between 

heating and cooling operation, depending on the 

indoor temperature.

Fan settings control the system fan as follows:

On: Fan operates continuously.

Auto: Fan operates with equipment.

Fig. 9. Thermostat System and Fan key locations.

NOTE: Always press the keys with your fingertip or sim-

ilar blunt tool. Sharp instruments like a pen or 

pencil point can damage the keyboard.

Temperature Settings

Refer to Table 2 for the default program. If the daytime 
energy savings period is not used, press the period key 

(Leave or Return) until the time is blank. The fan setting 
feature is available on select thermostat models. See 

Owners Guide, form number 69-0940, for complete 
instructions on changing the program.

INSTALLER SETUP

NOTE: For most applications, the thermostat factory-

settings do not need to be changed. Review the 
factory settings in Table 2 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, system changeover and outdoor 
temperature display. Installer Setup numbers are listed in 

Table 3. The table includes all the configuration options 
and the factory-settings for the T8601. 

A combination of key presses are required to use the 

Installer Setup feature: 
— To enter the Installer Setup, press and hold the 

Information   i   key with the increase 

 and decrease 

 keys until the first number is displayed. All display 

segments appear for approximately three seconds 
before the number is displayed. See Fig. 10 and 11.

M14624

Time

Set Program

System

Fan

Run

Program

Hold Temp

Set Current

Day/Time

Wake

Leave

Return

Sleep

Day

Heat/Cool

Settings

Daylight

Time

Copy

INCREASE TEMPERATURE 
SETTING OR SCROLL 
FORWARD THROUGH 
INSTALLER SETUP OPTIONS

DECREASE TEMPERATURE 
SETTING OR SCROLL 
BACKWARD THROUGH 
INSTALLER SETUP OPTIONS

DISPLAY INFORMATION
SUCH AS PRESENT 
SETTINGS AND OUTDOOR 
TEMPERATURE

RETURN TO 
NORMAL
OPERATIONS

ENTER 
INDEFINITE 
OR TIMED 
HOLD MODE

SET CURRENT 
DAY AND TIME

SET CURRENT OR
PROGRAM DAY

CHANGE BETWEEN 
DAYLIGHT SAVINGS 
AND STANDARD TIME

INCREASE TIME SETTING
OR SCROLL FORWARD 
THROUGH INSTALLER SETUP 
AND SYSTEM TEST

DECREASE TIME SETTING OR 
SCROLL BACKWARD THROUGH 
INSTALLER SETUP AND SYSTEM TEST

COPY ONE PROGRAMMED 
DAY TO ANOTHER DAY

SET WAKE TIMES 
AND SETPOINTS

CHANGE BETWEEN 
HEATING AND COOLING 
SETPOINTS 

SET LEAVE TIMES 
AND SETPOINTS

SET RETURN TIMES 
AND SETPOINTS

SET SLEEP TIMES 
AND SETPOINTS

SELECT SYSTEM 
OPERATION 

SELECT FAN 
OPERATION 

M14625

Hold Temp

Run

Program

Copy

Daylight

Time

Set Current

Day/Time

System

Fan

Time

Set Program

Day

System

Fan

Wake

Leave

Return

Sleep

Heat/Cool

Settings

Table 2. Default Program Settings.

Period

Time

Heat 

Setpoint

Cool 

Setpoint

Fan 

Setting

Wake

6:00 AM 70°F (21°C)

78°F 

(25.5°F)

Auto

Leave

8:00 AM

62°F 

(16.5°C)

85°F 

(29.5°F)

Auto

Return

6:00 PM 70°F (21°C)

78°F 

(25.5°F)

Auto

Sleep

10:00 PM

62°F 

(16.5°C)

82°F (28°F)

Auto

Summary of Contents for T8601D

Page 1: ...ully Failure to follow the instructions can damage the product or cause a hazardous condition 2 Check the ratings given in the instructions and on the product to make sure the product is suitable for your application 3 Installer must be a trained experienced service technician 4 After completing installation use these instructions to check out the product operation Location Install the thermostat ...

Page 2: ...illed holes until flush with the wall 4 Position the wallplate over the holes pulling wires through the wiring opening 5 Loosely insert the mounting screws into the holes 6 Tighten mounting screws WIRING All wiring must comply with local electrical codes and ordinances Refer to Fig 3 through 5 for typical hookups A letter code is located near each terminal for identification CAUTION Electrical Haz...

Page 3: ...0353 FAN RELAY Y G THERMOSTAT C HEAT RELAY R W COMPRESSOR CONTACTOR TRANSFORMER B HEAT DAMPER COOL DAMPER O 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED CAN BE USED FOR CHANGEOVER VALVE ON SINGLE STAGE HEAT PUMP SYSTEMS AVAILABLE ON SELECT MODELS OT WIRES MUST HAVE A SEPARATE CABLE FROM THE THERMOSTAT CABLE 2 2 2 1 3 OT OT OUTDOOR TEMPERATURE SENSOR 3 L1 HOT L2 M1035...

Page 4: ...ngeover and outdoor temperature display Installer Setup numbers are listed in Table 3 The table includes all the configuration options and the factory settings for the T8601 A combination of key presses are required to use the Installer Setup feature To enter the Installer Setup press and hold the Information i key with the increase and decrease keys until the first number is displayed All display...

Page 5: ...orary Setting Em Ht M14618 INSTALLER SETUP NUMBER DISPLAY COLUMN 2 OF TABLE 3 FACTORY SETTING OR OTHER CHOICE DISPLAY COLUMN 3 OR 5 OF TABLE 3 Table 3 Thermostat Installer Setup Options Select Installer Setup Number Press Time key to change Factory Setting Other Choices Press or key to change Actual Setting Display Description Display Description Not used 1 Fan operationa 2 0 Conventional applicat...

Page 6: ...ssor 33 5 5 minute minimum off time for the compressor 0 thru 4 Minimum number of minutes 0 thru 5 the compressor is off between calls for the compressor Temperature range stops in heating 34 90 Highest setpoint heating can be set to 40 to 89 Temperature range 1 F increments heating setpoint can be set to Temperature range stops in cooling 35 45 Lowest setpoint cooling can be set to 46 to 99 Tempe...

Page 7: ... test Press Run Program to exit the self test M14619 Time Set Program System Fan Run Program Hold Temp Set Current Day Time Set Current Day Time Wake Leave Return Sleep Day Heat Cool Settings Daylight Time Copy Set Day Time Mon PM M14620 Time Set Program System Fan Run Program Hold Temp Set Current Day Time Wake Leave Return Sleep Day Day Heat Cool Settings Daylight Time Copy Set Day Time PM Tue M...

Page 8: ...Example 001 Revision number 1 5 Press the increase key again to display the EEPROM identification code Example 314 EEPROM ID 314 6 Press the Run Program key to exit the self test The self test times out after four minutes without any key presses CHECKOUT Outdoor Temperature Sensor select models Allow the outdoor temperature sensor to soak in the outdoor air for a minimum of five minutes before tak...

Page 9: ...al is connected to the system transformer Check for 24 Vac between R and W terminals 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 thermostat and HVAC equipment replace any broken wires and tighte...

Page 10: ...entional heating equipment turns on the fan when the furnace has warmed up to a setpoint Wait a minute after seeing the on indicator and then check the registers Heating or cooling equipment is not operating Verify operation of heating or cooling equipment in self test Outdoor temperature not displayed a Option not activated Enter Installer Setup number 24 and set to 1 Thermostat must have OT term...

Page 11: ...T8601D CHRONOTHERM IV DELUXE PROGRAMMABLE THERMOSTATS 11 69 1626 ...

Page 12: ...m yourhome Printed in U S A on recycled paper containing at least 10 post consumer paper fibers XWRPDWLRQ DQG RQWURO 6ROXWLRQV RQH ZHOO RQH ZHOO LPLWHG RQH ZHOO LPLWpH RXJODV ULYH 1RUWK QDPLF ULYH ROGHQ 9DOOH 01 6FDUERURXJK 2QWDULR 0 9 ...

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