Honeywell T8621A User Manuals

Table of Contents

• Specifications

  2
• Ordering Information

  2
• HOLD TEMP key provided for indefinite pro- Selection/Application

  5
• Installation

  7
• Installer self-test and time delay override save Checkout

  17
• Programming the Thermostat

  19
• SYSTEM light-emitting diode (LED) indicates Operating the Thermostat

  25
• Operation

  28
• Troubleshooting

  29
• Glossary

  30
• Table of Contents

  31
• Specifications

  2
• Ordering Information

  2
• Selection/Application

  5
• Installation

  7
• Compatibility

  7
• Location

  7
• Mounting Subbase

  8
• Mounting Remote Temperature Sensor

  8
• Wiring

  9
• Adjusting Cycle Rate

  15
• Time/Temperature Conversion

  15
• Fan Operation Option Switch

  16
• Installing Batteries

  16
• Power Outages

  16
• Mounting the Thermostat

  16
• Setting Day and Time

  16
• Checkout

  17
• Heating

  17
• Cooling

  17
• Fan

  17
• Installer Self-Test

  18
• Programming the Thermostat

  19
• Enter the Day and Time

  19
• Set the Program Times and Temperatures for One Day

  20
• Copy the Program to the Desired Days

  22
• Set the Schedules and Temperatures For the Remaining Days

  23
• Set the System and Fan Switches on the Subbase‘

  24
• Operating the Thermostat

  25
• Temporarily Changing the Program

  25
• Reprogramming the Thermostat

  25
• Holding a Temperature for Extended Absence

  26
• Canceling Program Settings

  26
• Checking the Program Times and Temperatures

  27
• Checking the Current Temperature Setting

  27
• Operation

  28
• ADAPTIVE INTELLIGENT RECOVERY™ Operation

  28
• What to Expect During Recovery from Energy Savings in Heating

  28
• Thermal Performance with T8621

  28
• Minimum-Off Timing

  28
• Troubleshooting

  29
• Glossary

  30