Honeywell t8624d Installation Instructions Manual
  1. Manuals
  2. Brands
  3. Honeywell Manuals
  4. Thermostat
  5. T8624D
  6. Installation instructions manual

Honeywell t8624d Installation Instructions Manual

Deluxe programmable multistage thermostats
Hide thumbs Also See for t8624d:

Table of Contents

See also: Owner's Manual
APPLICATION
The T8624D Chronotherm® IV Deluxe Programmable
Multistage Thermostats provides electronic control of 24
Vac single-zone multistage systems.
T8624
Changeover
D
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. 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 •
T8624D Chronotherm
Table 1. Description of T8624 Thermostats.
System Selection
Heat-Off-Cool-Auto
• All Rights Reserved
Deluxe Programmable
Multistage Thermostats
Refer to Table 1 for a general description of the
thermostats. All T8624 thermostats require a common
wire to supply power.
Fan
Selection
On-Auto
System and fan selections are done by keyboard.
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
Comments
®
IV
69-1412-1
Table of Contents
loading

Related Manuals for Honeywell t8624d

Summary of Contents for Honeywell t8624d

  • Page 1 APPLICATION The T8624D Chronotherm® IV Deluxe Programmable Multistage Thermostats provides electronic control of 24 Vac single-zone multistage systems. T8624 Changeover System Selection Automatic Heat-Off-Cool-Auto 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.

  • Page 2: Wallplate Installation

    T8624D CHRONOTHERM IV DELUXE PROGRAMMABLE MULTISTAGE 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. 1. Position and level the wallplate (for appearance only).

  • Page 3: Mounting Thermostat

    JUMPER RC TERMINAL TO R TERMINAL WHEN INSTALLED ON A ONE TRANSFORMER SYSTEM. CAN BE USED FOR CHANGEOVER VALVE ON HEAT PUMP SYSTEMS. Fig. 3. Typical hookup of T8624D in a heat pump system. FOR WRAPAROUND FOR STRAIGHT INSERTION INSERTION STRIP STRIP 5/16 IN.

  • Page 4: Temperature Settings

    Fig. 6. T8624D key locations and descriptions. Program Hold Temp Fig. 7. T8624D 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: Installer Setup

    Table 2 and if no changes are necessary, go to the Installer System Test section. The Installer Setup is used to customize the thermostat to specific systems. Some of the options include temperature display, changeover, and outdoor temperature display.
  • Page 6 ® T8624D CHRONOTHERM IV DELUXE PROGRAMMABLE MULTISTAGE THERMOSTATS Table 3. Thermostat Installer Setup Options. (Continued) Installer Setup Number (Press Time key to Select change) Adaptive Intelligent Recovery™ control. Degree temperature display Not Used. Clock format. Not Used. 17 thru 18...

  • Page 7: Setting Current Day And Time

    T8624D CHRONOTHERM 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 Air Treatment (UV) System Lamp Monitor. IMPORTANT Review the settings to confirm that they match the system.

  • Page 8: 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. 69-1412—1...
  • Page 9 T8624D CHRONOTHERM Keys to Test Press Number Heating Equipment System Test Time Enter heating equipment System Test. Stage-one heat comes on. The system fan is also energized. Stage-two heat comes on. Stage-one heat and system fan remain on. Stage-two heat turns off.

  • Page 10: Thermostat Information

    ® T8624D CHRONOTHERM IV DELUXE PROGRAMMABLE MULTISTAGE 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 (Exam- ple: 027 = February 1997).

  • Page 11: Troubleshooting Guide

    T8624D CHRONOTHERM TROUBLESHOOTING GUIDE Symptom Possible Cause Display will not Thermostat is not being come on. powered. Temperature Room temperature display has display is incorrect. been reconfigured. Thermostat is configured for °F or °C display. Bad thermostat location. Temperature The upper or lower temperature settings will not limits were reached.
  • Page 12 Table 6. Troubleshooting Guide. (Continued) 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.

This manual is also suitable for:

Chronotherm iv t8624d

Table of Contents