Table of Contents
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Deluxe Programmable Thermostats
APPLICATION
The T8600 Chronotherm® IV Deluxe Programmable
Thermostat provides electronic control of 24 Vac single-
stage heating and cooling systems.
T8600
D
Heat-Cool
MERCURY NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash. Dispose of properly.
Contact your local waste management authority
for instructions regarding recycling and the
proper disposal of the old control.
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. 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.
® U.S. Registered Trademark
Copyright © 2002 Honeywell •
T8600D Chronotherm® IV
Table 1. Description of T8600 Thermostats
System
Changeover
Automatic
• All Rights Reserved
Refer to Table 1 for a general description of the
thermostat. All T8600 thermostats are powered by either
heating or cooling system.
System
Selection
Selection
Heat-Off-Cool-
On-Auto
Auto
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 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.
INSTALLATION INSTRUCTIONS
Fan
Comments
System and fan
selections are done by
keyboard.
69-1409-1
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Table of Contents
Related Manuals for Honeywell Chronotherm IV T8600D
Summary of Contents for Honeywell Chronotherm IV T8600D
- Page 1 4. After completing installation, use these instructions to check out the product operation. Location Install the thermostat 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: —...
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Page 2: Wallplate Installation
T8600D CHRONOTHERM® IV DELUXE PROGRAMMABLE THERMOSTATS Wallplate Installation The thermostat can be mounted horizontally on the wall or on a 2 in. x 4 in. (50.8 mm x 101.6 mm) wiring box. Position wallplate horizontally on the wall or on a 2 in. -
Page 3: Mounting Thermostat
7/16 IN. (11 MM). OUTDOOR TEMPERATURE SENSOR Mounting Thermostat 1. Engage tabs at the top of the thermostat and wall- 2. Press lower edge of case to close and latch. (HOT) NOTE: To remove the thermostat from the wall, first pull TRANSFORMER... -
Page 4: Using Thermostat Keys
Fig. 8. T8600D key locations and descriptions. Program Hold Temp Fig. 9. Thermostat System and Fan key locations. NOTE: Always press the keys with your fingertip or 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. -
Page 5: Default Program Settings
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. -
Page 6: Thermostat Installer Setup Options
17 and 18 Extended fan operation in heating Extended fan operation in cooling Not used. 21 thru 23 69-1409—1 Table 3. Thermostat Installer Setup Options. Factory Setting Display Description — — Conventional applications where equipment controls fan operation in heat mode. - Page 7 Table 3. Thermostat Installer Setup Options. (Continued) Installer Setup Number (Press Time ∆ key to Select change) Outdoor temperature display (select models) Not used. 25 thru 29 Deadband Not used. 31 and 32 Minimum off time for the compressor. Temperature range stops in heating.
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Page 8: Viewing Or Resetting Timer Settings
4. Press Run Program. Program Set Day/Time Viewing or Resetting Timer Settings When the thermostat activates a timer, the thermostat M14619 flashes Filter until the timer resets. 1. Reset the timer by pressing the i key until the Set Day/Time M14620 2. -
Page 9: Installer System Test
If more than one timer is active, all active timers show sequentially when pressing the i key several times. INSTALLER SYSTEM TEST Use the Installer System Test to check the thermostat operation. Refer to Table 4 for a list of the available system tests. CAUTION Equipment Damage Hazard. -
Page 10: Thermostat Information
The Run Program key does not exit this test. Press Time ∆ or Time ∇ and then the Run Program key to exit. THERMOSTAT INFORMATION 1. Press the Time ∆ key to access the thermostat information. 2. Press the increase key to display the production date code. -
Page 11: Troubleshooting Guide
— 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 tighten any loose connections. - Page 12 Wait a minute after seeing the on indicator and then check the registers. Verify operation of heating or cooling equipment in self-test. Enter Installer Setup number 24 and set to 1. Thermostat must have OT terminals and a C7089B1000 installed. Refer to C7089B1000 Installation Instructions and check wiring between the thermostat and sensor.