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Honeywell TH6110D Installation Guide

Summary

Manage your climate with this programmable thermostat solution designed for precise electronic control of single-stage heating and cooling systems. This essential installation manual provides expert guidance on wiring diverse HVAC units—including gas, electric furnaces, and heat pumps—and detail setup procedures across various power sources. It is mandatory reading for trained technicians and installers committed to achieving safe, optimal, and reliable system functionality.

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Installation Guide

TH6110D

Programmable Thermostat

Page Summary Contents For Honeywell TH6110D Installation Guide

Page 1 Installation Guide TH6110D Programmable Thermostat
Page 2 Focus PRO™ TH6110D Programmable Thermostat Product Application Table of contents This thermostat provides electronic control of 24 VAC single-stage heating and cool- Installation Appendices ing system...
Page 3 Focus PRO™ TH6110D Programmable Thermostat Product Application Table of contents This thermostat provides electronic control of 24 VAC single-stage heating and cool- Installation Appendices ing system...
Page 4 Installation Guide Focus PRO™ TH6110D Programmable Thermostat Pre-installation checklist Wallplate installation Package contents Insert finger into wire hole and pull to Remove the wallplate from the ...
Page 5 Installation Guide Focus PRO™ TH6110D Programmable Thermostat Pre-installation checklist Wallplate installation Package contents Insert finger into wire hole and pull to Remove the wallplate from the ...
Page 6 Installation Guide Focus PRO™ TH6110D Programmable Thermostat Wiring Wiring diagrams CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage. Power supply. Provide disconnect means ...
Page 7 Installation Guide Focus PRO™ TH6110D Programmable Thermostat Wiring Wiring diagrams CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage. Power supply. Provide disconnect means ...
Page 8 Installation Guide Focus PRO™ TH6110D Programmable Thermostat Wiring diagrams Power options & mounting Power supply. Provide disconnect means and overload protection as required. AC Power Factory-...
Page 9 Installation Guide Focus PRO™ TH6110D Programmable Thermostat Wiring diagrams Power options & mounting Power supply. Provide disconnect means and overload protection as required. AC Power Factory-...
Page 10 Installation Guide Focus PRO™ TH6110D Programmable Thermostat Installer setup Installer system test Follow the procedure below to test the heating, cooling and fan. Follow the procedure below to confi...
Page 11 Installation Guide Focus PRO™ TH6110D Programmable Thermostat Installer setup Installer system test Follow the procedure below to test the heating, cooling and fan. Follow the procedure below to confi...
Page 12 Installation Guide Focus PRO™ TH6110D Programmable Thermostat Auto Changeover (Setup Function 12) Quick reference to controls Auto Changeover is a feature used in Digital display screen Battery holder...
Page 13 Installation Guide Focus PRO™ TH6110D Programmable Thermostat Auto Changeover (Setup Function 12) Quick reference to controls Auto Changeover is a feature used in Digital display screen Battery holder...
Page 14 Installation Guide Focus PRO™ TH6110D Programmable Thermostat In case of difficulty In case of difficulty If you have difficulty with your thermostat, please try the suggestions below. Most Heating eq...
Page 15 Installation Guide Focus PRO™ TH6110D Programmable Thermostat In case of difficulty In case of difficulty If you have difficulty with your thermostat, please try the suggestions below. Most Heating eq...
Page 16 Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 ® U.S. ...

Manual Details

Brand Honeywell
Pages 16
File Size 806.85 KB
Published May 22, 2026
97 views

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Frequently Asked Questions

Who should install this Programmable Thermostat?

It must be installed by a trained, experienced technician to avoid hazardous conditions.

How high and where should the thermostat be mounted?

Install it about 5 feet (1.5m) above the floor in an area with good air circulation and at average temperature.

What voltage systems is this unit compatible with?

It provides electronic control for 24 VAC single-stage or 750 mV heating systems.

What do I check if my cooling system fails to function?

Check for 24 Vac between the cooling terminal (Y) and common, and verify that there are no loose or broken wires.