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VisionPRO®
TH8000 Series
Touch-screen Programmable
Thermostat
Installation Guide
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)
System Types
• Gas, oil, or electric heat with air
conditioning
• Warm air, hot water,
highefficiency furnaces, heat
pumps, steam, gravity
This thermostat contains a Lithium battery which may contain Perchlorate material.
Perchlorate Material—special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate
For assistance with this product please visit http://customer.resideo.com
or call Resideo Customer Care toll-free at 1-800-468-1502
® U.S. Registered Trademark.
Copyright © 2021 Resideo Technologies, Inc.
All rights reserved.
Note: This document is for obsolete models. Current
VisionPRO models start with TH8110R, TH8320R,
TH8321R, or TH8321WF.
• Heat only — two-wire systems,
power to open and close zone
valves (Series 20), and normally
open zone valves
• Heat only with fan
• Cool only
• 750 mV heating systems
Need Help?
69-2693-03
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Table of Contents
Related Manuals for resideo VisionPRO TH8000 Series
Summary of Contents for resideo VisionPRO TH8000 Series
- Page 1 This thermostat contains a Lithium battery which may contain Perchlorate material. Perchlorate Material—special handling may apply, See www.dtsc.ca.gov/hazardouswaste/perchlorate Need Help? For assistance with this product please visit http://customer.resideo.com or call Resideo Customer Care toll-free at 1-800-468-1502 ® U.S. Registered Trademark. Copyright © 2021 Resideo Technologies, Inc.
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Page 2: Wallplate Installation
Installation Guide Wallplate installation Grasp top and bottom of wallplate 1. Separate wallplate from thermostat. and pull to remove from thermostat. 2. Mount wallplate as shown below. Drill 3/16” holes for drywall. Drill 7/32” holes for plaster. MCR29480 Wire hole Mounting screws Wall anchors MCR29481... -
Page 3: Power Options
VisionPRO TH8000 Series Power options USED MCR29482 For 24VAC primary power, connect common Insert supplied batteries for primary or backup power. side of transformer to “C” terminal. Wiring Remove factory-installed jumper Push excess wire back into the wall opening. Plug only for two-transformer systems. - Page 4 Installation Guide Wiring Wiring guide—conventional systems Shaded areas below apply only to TH8320/TH8321. 1H/1C System (1 transformer) 1H/1C System (2 transformers) Power [1] Power (cooling transformer) [1, 2] [R+Rc joined by jumper] Power (heating transformer) [1, 2] Heat relay Heat relay Compressor contactor Compressor contactor Fan relay...
- Page 5 VisionPRO TH8000 Series Wiring Wiring guide—heat pump systems Shaded areas below apply only to TH8320/TH8321. 1H/1C Heat Pump (no auxiliary heat) 2H/2C Heat Pump (no auxiliary heat) Power [1] Compressor 2 relay [R+Rc joined by jumper] Power [1] Changeover valve [5] [R+Rc joined by jumper] Compressor relay Changeover valve [5]...
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Page 6: Set Date And Time
Installation Guide Remove tab and mount thermostat Remove tab. Align pins on back of thermostat with slots in wallplate, then push gently until thermostat snaps into place. M29484 Set date and time Press st Press st to set date to set time Press st to set month Press st... - Page 7 VisionPRO TH8000 Series Installer setup Function Setting 0120 0120 DONE DONE MCR29486 Press st to Press st to Press DONE to exit & save settings. select function change setting Setup functions Settings & Options (factory default in bold) Shaded areas below apply only to TH8320/TH8321. 0120 Year 20 (2001-2099)
- Page 8 Installation Guide Installer setup Setup functions Settings & Options (factory default in bold) Shaded areas below apply only to TH8320/TH8321. 0240 First stage heat Gas or oil furnaces of less than 90% efficiency cycle rate (CPH= Steam or gravity systems cycles per hour) Hot water systems &...
- Page 9 VisionPRO TH8000 Series Installer setup Setup functions Settings & Options (factory default in bold) 0500 Furnace filter change reminder 10-day run time (about 1 month) 30-day run time (about 3 months) 60-day run time (about 6 months) 90-day run time (about 9 months) 120-day run time (about 1 year) 365-day run time (about 3 years) 0510...
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Page 10: Installer System Test
Installation Guide Installer system test During installer setup, press t Test System repeatedly until “Test” appears. number status 0120 DONE TEST DONE MCR29488 Press st to Press st to select test change status Press DONE to terminate testing. Shaded areas below apply only to TH8320/TH8321. System test System status Cooling system... -
Page 11: Special Functions
VisionPRO TH8000 Series Special functions Shaded areas below apply only to TH8320/TH8321. Auto Changeover (Setup Function 0300): When set to Auto, the thermostat automatically selects heating or cooling depending on the indoor temperature. Heat and cool settings must be at least 2 degrees apart. -
Page 12: Specifications
Resideo Technologies, Inc. 1985 Douglas Drive North, Golden Valley, MN 55422 1-800-468-1502 www.resideo.com 69-2693—03 M.S. Rev. 07-21 | Printed in United States © 2021 Resideo Technologies, Inc. All rights reserved. This product is manufactured by Resideo Technologies, Inc. and its affiliates.