Honeywell RTH8500D User Manual

OWNER’S GUIDE
U.S. Pat. 6,595,430
Other Patents Pending
® U.S. Registered Trademark
© 2004 Honeywell International Inc.
All Rights Reserved
69-1725-1
RTH8500D Touch Screen
Programmable Thermostat
The RTH8500D Thermostat provides electronic control of 24 Vac heating and
cooling systems or 750 mV heating systems.
For assistance with your Honeywell product, please visit
www.honeywell.com/yourhome
or call Honeywell Customer Care
toll free at 1-800-468-1502.
Read and Save these Instructions

Honeywell RTH8500D Specifications

General

Programmability	7-day programmable
Wi-Fi	No
Operating Modes	Heat, Cool, Auto, Off
Filter Change Alert	Yes
Backup Battery	Yes
Display	Touchscreen
Power Source	Battery or Hardwired
Compatibility	Gas, oil, electric, and heat pump systems
Stages	Up to 2 Heat/2 Cool
Fan Modes	Auto, On, Circulate
Temperature Range	40°F to 99°F (4°C to 37°C)
Hold Feature	Yes

Summary

Step 1 Prepare for Installation

Step 2 Follow Important Instructions

Step 3 Remove Old Thermostat

Step 4 Follow Special Instructions

Step 5 Label Old Thermostat Wires

Step 6 Mount New Wallplate to Wall

Step 7 Connect Wires to New Wallplate

Step 8 Install Batteries

Step 9 Attach New Thermostat to Wallplate

Step 10 Set the Calendar

Step 11 Configure Installer Setup

Set System Setting

Set Fan Setting

Program Your Heating and Cooling Schedule

Cancel a Schedule Period

Set Temperature Overrides

Hold Temperature Until (Temporary Hold)

Permanent Hold

Vacation Hold

Replace Batteries

Built-in Compressor Protection

Troubleshooting Tips