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T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS

5

69-1510-4

Temperature Settings

Refer to Table 2 for the default program settings. 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 Owner’s Guide, form 69-0940, for complete 
instructions on changing the program.

INSTALLER SETUP

NOTE: For most applications, the thermostat factory-

settings do not require changing. Review the 
factory settings in Table 2 and, if no changes 
are necessary, go to 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 T8602. 

A combination of key presses is 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. 11 
and 12.

— To advance to the next Installer Setup, press the Time 

 key.

— To change a setting, use the increase   or     

decrease

   

key.

— To scroll the Installer Setup numbers backward, press 

the Time 

 key.

— To exit the Installer Setup, press Run Program.

Fig. 11. Display of all LCD segments.

Fig. 12. Display of Installer Setup number and 

setting.

CAUTION

Electric Heat Configuration Hazard. 
Can cause equipment damage.

Configure electric heat system to 1 in Installer 
Setup number 2 to prevent system running 
without fan.

IMPORTANT

Only configured numbers are shown on the 
device. Example: If thermostat does not have a 
System key, Installer Setup Number 12 will not 
be displayed. Review Table 3 factory settings 
and mark any desired changes in the Actual 
Setting column. When Installer Setup is com-
plete, review the settings to confirm that they 
match the system.

Table 2. Default Program Settings.

Period

Time

Heat 

Setpoint

Cool 

Setpoint

Fan 

Setting

Wake

6:45 AM

20°C

25°C

Auto

Leave

8:45 AM

4.5°C

37°C

Auto

Return

5:00 PM

20°C

25°C

Auto

Sleep

10:00 PM

4.5°C

37°C

Auto

M14559

Aux Ht

Set Day/Time

Set Program

Mon
Wake Leave Return

Sleep

Outdoor

Room

Filter

Wait

System

Fan

Em Heat

On

Auto

Off

Cool

Auto

AM

PM

Hold for

Heat

Cool

Repl Batt

Recovery

DST

Tue Wed Thu Fri Sat Sun

Days

Temporary 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)

Summary of Contents for Chronotherm IV T8602D

Page 1: ...tat about 1 5m 5 ft above the floor in an area with good air circulation at average temperature See Fig 1 Do not install the thermostat where it can be affected by drafts or dead spots behind doors and in corners hot or cold air from ducts radiant heat from sun or appliances concealed pipes and chimneys unheated uncooled areas such as an outside wall behind the thermostat Wallplate Installation Th...

Page 2: ... Securely tighten each terminal screw 3 Push excess wire back into the hole 4 Plug the hole with nonflammable insulation to pre vent drafts from affecting the thermostat Fig 3 Typical hookup in heat and cool system with two transformers 1 5 METERS 5 FEET YES NO NO NO M10856 WIRES THROUGH WALL WALL MOUNTING HOLES M15044 MOUNTING SCREWS WALL ANCHORS 2 L1 HOT L2 M10855 FAN RELAY Y G THERMOSTAT RC HEA...

Page 3: ...PPLY 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 RC W MILLIVOLT HEATING ONLY WALLPLATE R M2931 TH TH PP PP MILLIVOLTAGE GAS CONTROL LIMIT CONTROL MILLIVOLTAGE GENERATOR PILOTSTAT CON...

Page 4: ...sly Auto Fan operates with equipment Fig 10 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 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 S...

Page 5: ...ed See Fig 11 and 12 To advance to the next Installer Setup press the Time key To change a setting use the increase or decrease key To scroll the Installer Setup numbers backward press the Time key To exit the Installer Setup press Run Program Fig 11 Display of all LCD segments Fig 12 Display of Installer Setup number and setting CAUTION Electric Heat Configuration Hazard Can cause equipment damag...

Page 6: ...uto only Adaptive Intelligent Recovery control 13 1 Conventional recovery system starts recovery at programmed time Adaptive Intelligent Recovery control is activated system starts early so setpoint is reached by start of program period Not Used 14 thru 15 Clock format 16 0 12 hour clock format 1 24 hour clock format Not Used 17 thru 23 Outdoor temperature display select models 24 0 No outdoor tem...

Page 7: ...s to 1 5 C higher than actual room temperature 5 Display adjusts to 5 C lower than actual room temperature 1 0 Display adjusts to 1 0 C lower than actual room temperature 1 5 Display adjusts to 1 5 C lower than actual room temperature Furnace Air Filter Timer 43 0 Off 1 2 3 4 1 10 days 2 30 days 3 60 days 4 120 days Time counted when heat cool or fan is running Humidifier Pad Monitor 44 0 Off 1 2 ...

Page 8: ...gram to exit the System 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 M14621 Time Set Pr...

Page 9: ...escription 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 energized 10 Heat and system fan turn off Cooling Equipment System Test Time 30 Change from heating to cooling equipment system test 31 Cool and system fan come on 30 Cool and system fan turn off Fan Equipment System Test Time 40 Change fro...

Page 10: ... identification code Example 02 software ID code 2 4 Press the increase key again to display the soft ware revision number 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 system test The system test times out after four minutes without any key presses CHECKOUT Outdoor Temperatur...

Page 11: ...C equipment is in the Off position set to the On position check wiring between thermostat and HVAC equipment replace any broken wires and tighten any loose connections If 24 Vac is present proceed with troubleshooting Thermostat minimum off time is activated Wait up to five minutes for the system to respond System selection is not set to Heat Set system selection to Heat Heating setpoint is below ...

Page 12: ... fan operation Conventional 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 tempera ture not displayeda Option not activated Enter Installer Setup number 24 and set to 1 Thermosta...

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