Table of Contents
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T8601D Chronotherm® IV Deluxe
APPLICATION
The T8601 Chronotherm® IV Deluxe Programmable
Thermostat provides electronic control of 24 Vac single-
T8601
System
Changeover System Selection
D
Heat-Cool Automatic
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.
Contact your local waste management authority
for instructions regarding recycling and the
proper disposal of the old thermostat.
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 •
Programmable Thermostats
Table 1. Description of T8601 Thermostats.
Fan Selection
Heat-Off-Cool-Auto
•All Rights Reserved
INSTALLATION INSTRUCTIONS
stage heating and cooling systems. Refer to Table 1 for a
general description of the thermostat. All T8601
thermostats require a common wire to supply power.
On-Auto
Use keyboard for system and fan selections
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 5 ft (1.5m) 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.
Comments
69-1410-2
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Table of Contents
Related Manuals for Honeywell Chronotherm IV T8601D
Summary of Contents for Honeywell Chronotherm IV T8601D
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Page 1: Programmable Thermostats
3. Installer must be a trained, experienced service 4. After completing installation, use these instructions Location Install the thermostat about 5 ft (1.5m) 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: —... -
Page 2: Wallplate Installation
T8601D CHRONOTHERM® IV DELUXE PROGRAMMABLE THERMOSTATS Wallplate Installation The thermostat can be mounted horizontally on the wall or on a 2 in. x 4 in. wiring box. Position wallplate horizontally on the wall or on a 2 in. x 4 in. wiring box. -
Page 3: Mounting Thermostat
RELAY TEMPERATURE SENSOR Mounting Thermostat (HOT) 1. Engage tabs at the top of the thermostat and wall- TRANSFORMER 2. Press lower edge of case to close and latch. NOTES: To remove the thermostat from the wall, first pull M10353 HEAT... -
Page 4: Temperature Settings
DECREASE TIME SETTING OR SCROLL BACKWARD THROUGH INSTALLER SETUP AND SYSTEM TEST Fig. 8. T8601D key locations and descriptions. Fig. 9. Thermostat System and Fan key locations. NOTE: Always press the keys with your fingertip or INCREASE TEMPERATURE SET RETURN TIMES... -
Page 5: Installer Setup
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
Not used 25 thru 29 Deadband Not used 31 and 32 Minimum off time for the compressor 69-1410—2 Table 3. Thermostat Installer Setup Options. Factory-Setting Display Description — — Conventional application where equipment control fan operation in heat mode —... - Page 7 Review the settings to confirm that they match the system. Press Run Program to exit the Installer Setup. The thermostat has saved the Installer Setup changes and initiated a reset in order to operate using the new settings. Be sure to set the current day and time immediately.
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Page 8: Setting Current Day And Time
69-1410—2 4. Press Run Program. Program Viewing or Resetting Timer Settings Set Day/Time When the thermostat activates a timer, the thermostat flashes Filter until the timer resets. M14619 1. Reset the timer by pressing the i key until the Filter... -
Page 9: Installer Self-Test
INSTALLER SELF-TEST Use the Installer Self-Test to check the thermostat oper- ation. Refer to Table 4 for a list of the available self-tests. CAUTION Equipment Damage Hazard. Minimum compressor off-time is bypassed during Installer System Test. Avoid cycling compressor quickly. -
Page 10: Thermostat Information
T8601D CHRONOTHERM® IV DELUXE PROGRAMMABLE THERMOSTATS THERMOSTAT INFORMATION 1. Press the Time to access the thermostat information. 2. Press the increase ! key to display the production date code. The first two large digits are the month and the third digit is the last digit of the year. -
Page 11: Troubleshooting Guide
Heating does No power to the thermostat. • Check that C terminal is connected to the system transformer. come on. Thermostat minimum off time is activated. System selection is not set to Heat. - Page 12 Symptom Possible Cause Cooling does not No power to the thermostat. • Check that C terminal is connected to the system transformer. come on. Thermostat minimum off time is activated. System selection is not set to Cool. Cool setpoint is above room temperature.