Honeywell TH8321U Touch Screen Programmable Thermostat Installation Guide
Installation
Guide
®
VisionPRO TH8000 Series
Touch-screen Programmable Thermostat
This manual covers the following models
• TH8110U: For 1 Heat/1 Cool systems
• TH8320U: For up to 3 Heat/2 Cool systems
• TH8321U: For up to 3 Heat/2 Cool systems with dehumidification
(Pull thermostat from wallplate and turn over to find model number)
• Heat only — two-wire systems,
System Types
• Gas, oil, or electric heat with air
power to open and close zone
valves (Series 20), and normally
open zone valves
conditioning
• Warm air, hot water,
highefficiency furnaces, heat
pumps, steam, gravity
• Heat only with fan
• Cool only
• 750 mV heating systems
This thermostat contains a Lithium battery which may contain Perchlorate material.
Perchlorate Material—special handling may apply,
Need Help?
or call Honeywell Customer Care toll-free at 1-800-468-1502
® U.S. Registered Trademark.
Copyright © 2012 Honeywell International Inc.
All rights reserved.
69-2693-01
| General | Details |
|---|---|
| Name | Honeywell TH8321U Touch Screen Programmable Thermostat Installation Guide |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.26 MB |
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Honeywell TH8321U Manual: Questions and Answers
How do I know if the Honeywell TH8321U compressor protection is working?
The message "Wait" flashes on the display while compressor protection is active, preventing the compressor from restarting too quickly. Installation Guide, p. 11
What's the difference between R and Rc terminals on the Honeywell TH8321U?
R connects to the heating transformer secondary side. Rc connects to the cooling transformer secondary side. Installation Guide, p. 3
How do you replace the batteries in the Honeywell TH8321U?
Insert supplied batteries where indicated on the thermostat for primary or backup power. Installation Guide, p. 3
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