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Honeywell Chronotherm IV T8602D Installation Instructions Manual

Honeywell programmable thermostat installation instructions
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APPLICATION
The T8602 Chronotherm® IV Programmable Thermostat
provides electronic control of 24 Vac single-stage heating
and cooling systems or 750 mV heating and 750 mV
T8602
System
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.
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.
® U.S. Registered Trademark
Copyright © 2003 Honeywell International Inc. •
T8602D Chronotherm® IV

Programmable Thermostats

Table 1. Description of T8602 Thermostats.
System
Changeover
Selection
Manual or
Heat-Off-Cool or
Automatic
Heat-Off-Cool-Auto
Selectable
cooling. Refer to Table 1 for a general description of the
thermostat. All T8602 Thermostats are powered by
batteries.
Fan
Selection
On-Auto
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

The thermostat can be mounted horizontally on the wall
or on a 50.8 mm x 101.6 mm (2 in. x 4 in.) wiring box.
Position wallplate horizontally on the wall or on a
50.8 mm x 101.6 mm (2 in. x 4 in.) wiring box.
1. Position and level the wallplate (for appearance
only). The thermostat will function properly even
when not level.
2. Use a pencil to mark the mounting holes. See Fig.
2.
3. Remove the wallplate from the wall and drill two
4.76 mm (3/16 in.) holes in the wall (if drywall) as
marked. For firmer material such as plaster, drill
two 5.56 mm (7/32 in.) holes. Gently tap anchors
(provided) into the drilled 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.
• All Rights Reserved
INSTALLATION INSTRUCTIONS
Comments
System and fan selections are done
by keyboard.
69-1510-4

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  Summary of Contents for Honeywell Chronotherm IV T8602D

  • Page 1: Programmable Thermostats

    Install the thermostat about 1.5m (5 ft) above the floor in an area with good air circulation at average temperature. See Fig. 1. ® U.S. Registered Trademark Copyright © 2003 Honeywell International Inc. • T8602D Chronotherm® IV Programmable Thermostats cooling. Refer to Table 1 for a general description of the thermostat.
  • Page 2 4. Plug the hole with nonflammable insulation to pre- MOUNTING HOLES MOUNTING SCREWS M15044 (HOT) connect the system wires. See Fig. 7. Use 18 gauge, color-coded thermostat cable for proper wiring. vent drafts from affecting the thermostat. THERMOSTAT COMPRESSOR HEAT CONTACTOR RELAY...
  • Page 3: Mounting Thermostat

    M10347A FOR WRAPAROUND INSERTION STRIP 7/16 IN. (11 MM). Mounting Thermostat 1. Engage tabs at the top of the thermostat and wall- plate. See Fig. 7. LIMIT 2. Press lower edge of case to close and latch. CONTROL NOTE: To remove the thermostat from the wall, first pull M2931 Fig.
  • Page 4: System And Fan Settings

    INSTALLER SETUP AND SYSTEM TEST Fig. 9. T8602D key locations and descriptions. Program Hold Temp Fig. 10. Thermostat System and Fan key locations. NOTE: Always press the keys with your fingertip or sim- INCREASE TEMPERATURE SET RETURN TIMES SETTING OR SCROLL...
  • Page 5: Installer Setup

    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.
  • Page 6: Adaptive Intelligent Recovery™ Control

    Minimum off time for the compressor. Temperature range stops in heating. Temperature range stops in cooling. Not Used. 69-1510-4 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) Temperature display adjustment. Furnace Air Filter Timer. Humidifier Pad Monitor. Ultraviolet (UV) Air Treatment System Lamp Monitor. IMPORTANT Review the settings to confirm that they match the system.
  • Page 8: Setting Current Day And Time

    Wake Daylight Copy Time 69-1510-4 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. Set Day/Time M14619 To start the system test: Press and hold the increase the same time until 10 appears.
  • Page 9 Keys to Test Press Number Heating Equipment System Test Time ∆ Enter heating equipment system test. Heat comes on. When Installer Setup number 2 is 1, the system fan is also energized. Heat and system fan turn off. Cooling Equipment System Test Time ∆...
  • Page 10: Thermostat Information

    T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS THERMOSTAT INFORMATION 1. Press the Time ∆ key 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

    — 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 Sensor installed. Refer to C7089B1000 Installation Instructions and check wiring between the thermostat and sensor.