Honeywell T8624 User Manual

Programmable Multistage Thermostat
OWNER’S GUIDE
Your new programmable thermostat is a precision instrument that’s quality-built to give you many years of satisfactory
service. It’s a “smart” thermostat that lets you save energy while still maintaining the standard of comfort you want in your
home.
This Owner's Guide will show you how to get the most benefit from your new thermostat.

Honeywell T8624 Specifications

General

Type	Mechanical
Stages	1 Heat / 1 Cool
Power Method	Hardwired
Temperature Control	Electronic
Switch Action	SPDT
Compatibility	Single Stage Heating and Cooling
Voltage Rating	24V
Mounting	Wall
Display	LCD
Warranty	1 Year

Summary

Adaptive Intelligent Recovery™ Technology

Optimizing Comfort and Energy Savings

Programming Your Thermostat

Step 1: Set Current Day and Time

Setting the current day and time is crucial for accurate thermostat programming.

Step 2: Set Program Schedule and Heating Temperatures

Program WAKE, LEAVE, RETURN, and SLEEP times and heating temperatures for your comfort.

Step 3: Set Cooling Temperatures

Program cooling temperatures for WAKE, LEAVE, RETURN, and SLEEP periods to maintain ideal indoor climate.

Step 4: Set System and Fan Switches

Configure system (HEAT/COOL/AUTO) and fan (ON/AUTO) switches for optimal HVAC operation.

Operating Your Thermostat

Permanently Changing Program Settings

Maintaining Your Thermostat

Replacing Thermostat Batteries

Planning Your Personal Thermostat Program

Troubleshooting Common Thermostat Issues

Frequently Asked Questions about Chronotherm III

Quick Reference Guide to Thermostat Keys