Document

 Honeywell VisionPRO Series Programmable Thermostat Installation Guide
Honeywell VisionPRO Series Programmable Thermostat

Wired Directly to Equipment

Wiring

Reference to key features

Product Overview

  • Current display. Underlined label signifies the current display.
  • Mode control buttons. Use to change settings for Fan or System Heat/Cool.
  • Menu. Select options to: set schedules, view equipment status, change IAQ settings, access installer options*, etc.
  • Current status. Shows system mode (heat/cool), outdoor temperature and humidity (with optional outdoor sensor).
  • Current schedule. Shows desired temperature and schedule status.
  • Indoor conditions. Shows indoor temperature and humidity.
  • Current Time.
  • Alert Light Alert Light. On when alert message is active or system is set to Em Heat. Flashes for battery-only power; on continuous for 24 VAC.
  • microSD Card Port microSD Card Port. Use card to load settings and dealer information.

Password is the date code.

Getting started

Follow these basic steps to install this thermostat, link it with the wireless accessories, and set installer options

  1. Installing the thermostat
  2. Powering optional RedLINK accessories
  3. Performing initial setup
  4. Finding your password (Date Code)
    • To add or remove RedLINK accessories
    • To make changes to Installer Setup
    • To perform an Installer Test
      Thermostat (back view)

Installing the thermostat

NOTE Icon NOTE: For best RedLINK performance, mount thermostats at least 2 feet apart.

  1. Separate wallplate from thermostat.
    If your thermostat has a button along the top of the wallplate, press button on top and pull to remove the wallplate as shown. Updated models do not have this button. On those models pull evenly along the sides and bottom of the thermostat to separate it from the wallplate.
    Installing Thermostat
  2. Mount wallplate as shown.
    Mount new wallplate using screws and anchors included with the thermostat.
    Drill 3/16-in holes for drywall.
    Drill 7/32-in holes for plaster.Installing Thermostat
  3. Connect power.
    1.3a Insert supplied AA alkaline batteries for primary or backup power.Connect Power
    NOTE Icon NOTE: When the thermostat is NOT used with the Equipment Interface Module or the TrueZONE Wireless Adapter, a C wire is required for RedLINK.
    1.3b For 24VAC primary power, connect common side of transformer to C terminal.
  4. Wire the thermostat.
    Is the thermostat wired directly to the equipment?
    • If the thermostat is wired directly to the equipment:
      • Refer to the table and wiring diagrams on the next page.
      • Turn on 24VAC NOW. 24VAC (C wire) is required to connect RedLINK accessoriesWiring
    • If the thermostat is used with an Equipment Interface Module or TrueZONE Wireless Adapter, power the thermostat using Rc and C terminals or with batteries.
      Wiring
      NOTE Icon NOTE: The relay outputs and inputs on the thermostat do not function when used with an Equipment Interface Module or TrueZONE Wireless Adapter.
  5. With thermostat removed from sub-base, insert the coin cell battery.
    NOTE Icon NOTE:
    On some models the coin cell battery compartment slides out from the left side of the thermostat when viewing it from the back (not pictured).
    Battery Cell
  6. Mount thermostat on wallplate.
    NOTE Icon NOTE: If your thermostat has hinges at the bottom of the wallplate as shown, insert the thermostat into the hinges, then push the top toward the wall until it snaps together.
    Updated models do not have hinges. On those models push evenly along the sides and bottom of the thermostat to connect it to the wallplate.
    Mounting Instructions

Terminal Designations

Conventional System Heat Pump
Terminal Description Terminal Description
C Common wire from secondary side of cooling transformer (if 2 transformers). C Common wire from secondary side of cooling transformer.
Rc* Cooling power. Rc Cooling power.
R* Heating power. R Heating power.
W Heat Stage 1 O/B Changeover valve for heat pumps.
W2 Heat Stage 2 AUX-E Backup Heat/Emergency Heat
Y Compressor Stage 1 Y Compressor Stage 1
Y2 Compressor Stage 2 Y2 Compressor Stage 2
G Fan Relay G Fan Relay
A Connect to Economizer Module or Lighting Panel (TOD). L/A Connect to Compressor Monitor, Zone Panel, Economizer Module or Lighting Panel (TOD).
U1 / U1 Relay for humidification, dehumidification, ventilation, or a stage of heating/cooling. U1 / U1 Relay for humidification, dehumidification, ventilation, or a stage of heating/cooling.
S1 / S1 Input for a wired indoor, outdoor or discharge sensor. S1 / S1 Input for a wired indoor, outdoor or discharge sensor.
K** Connect to K on C-wire adaptor. K** Connect to K on C-wire adaptor.

* Remove factory installed jumper for two transformer systems.
** The THP9045A1098 C-wire adaptor is used on heat/cool systems when you only have four wires at the thermostat and you would like the thermostat to be powered with a common wire. Use the K terminal in place of the Y and G terminals on conventional or heat pump systems to provide control of the fan and the compressor through a single wire—the unused wire then becomes your common wire. See THP9045 instructions for more information.

POWERED HUMIDIFIER, DEHUMIDIFIER OR VENTILA- TOR
Wiring Diagram

DEHUMIDIFICATION WITH LOW SPEED FAN
Wiring Diagram

DEHUMIDIFICATION WITH LOW SPEED FAN
Wiring Diagram

Wire the thermostat U1 terminal to the low speed fan for dehumidification control at the equipment as shown. The relay can be set to normally open or normally closed in the installer setup.

Icon Normally open, dry contacts
Icon Normally closed, dry contacts
CONNECTING A HEAT OR COOL STAGE TO U1
Wiring Diagram

Powering optional RedLINK accessories

  1. Install batteries in RedLINK accessories.
    • Portable Comfort Control
    • Wireless Outdoor Sensor*
    • Wireless Indoor Sensor*
    • Wireless Entry/Exit Remote*
    • Wireless Vent and Filter Boost Remote*
      * Requires setup. See Installer Setup options in Step 3.4.
      Powering
  2. Connect gateway to internet and connect to power.
    • Connect RedLINK Internet Gateway to router or modem with Ethernet cable (RJ45).
    • Connect gateway’s power cord to an electrical outlet that is not controlled by a wall switch.
      NOTE IconNOTE:  If the thermostat is wired directly to the equipment, 24VAC (C wire) is required to connect RedLINK accessories. Turn on 24VAC before performing initial setup in Step 3.

Performing initial setup

Initial setup options define the type of system you are installing:

  • Residential or commercial
  • Non-zoned or zoned
  • Used with or without an Equipment Interface Module (THM5421)
  • Used with or without the TrueZONE Wireless Adapter (THM4000)
  1. Follow prompts on the screen to select the appropriate options.
    Installation Instructions
    NOTE IconNOTE: If you are connecting the thermostat to the TrueZONE Wireless Adapter (THM4000), refer to the TrueZONE instructions to link the thermostat and RedLINK accessories. Then go to Step 3.4.
  2. When you see the prompt Connect RedLINK Accessories? Touch No or Yes.
    • If you select No, continue to Step 3.4.
    • If you select Yes, you will be prompted to Press Connect on New Accessories. Continue to Step 3.3.
      Installation Instructions
  3. Connect each RedLINK accessory.
    NOTE Icon NOTE: Accessories must be at least 2 feet away from the thermostat during the linking process.
    • While the Press Connect message is displayed (listening mode), press and quickly release the CONNECT button on each new RedLINK accessory.
      Listening mode
      Installation Instructions
    • After a short delay (up to 15 seconds), check thermostat to confirm the connection of each RedLINK accessory. Touch Buttonor Button to review the list.
    • Touch Done at the thermostat after all new RedLINK accessories are connected.
      Installation Instructions
      NOTE Icon NOTE: Thermostat displays a countdown timer while in the listening mode. If it detects no activity for 15 minutes, it exits listening mode.
  4. Finish the initial setup.
    Finish the setup by selecting the desired options. Touch Done after you select the last option you want to change.
    Installation Instructions
    The thermostat now displays its Home screen and the thermostat setup is complete.
    Installation Instructions

Finding your password (Date Code)

  • To add or remove RedLINK accessories
  • To make changes to Installer Setup
  • To perform an Installer Test

Finding your password
You can find the date code on the back of the thermostat, or

 

  1. Touch Menu
    Finding Password
  2. Select Dealer Information.
    Finding Password
  3. Scroll down to see the Date Code.
    Menu

Linking RedLINK accessories to the thermostat

  1. Touch Menu.
  2. Select Installer Options.
    Dealer Information
  3. Enter password (date code) and touch Done.
    Date Code.
  4. Select Wireless Manager.
    Linking
  5. Select Add Device. The screen displays “Press Connect on New Accessories.” The thermostat is now in listening mode.
    Linking
    NOTE: Accessories must be at least 2 feet away from the thermostat during the linking process.
    • Press and quickly release the CONNECT button on each new RedLINK accessory.
      Linking
    • After a short delay (up to 15 seconds), check thermostat to confirm the connection of each RedLINK accessory. Touch s or t to review the list.
    • Touch Done at the thermostat after all new RedLINK accessories are connected.
      Linking
      NOTE Icon NOTE: Thermostat displays a countdown timer while in the listening mode. If it detects no activity for 15 minutes, it exits listening mode.

Making changes to Installer Setup and performing an Installer Test

NOTE IconNOTE: Use a microSD card to save set up time.

  1. Touch Menu.
  2. Select Installer Options.
    Linking
  3. Enter password (date code) and touch Done.
    Linking
  4. Select Installer Setup or Installer Test.
    Linking
  5. Follow prompts on the screen to select the desired setup options or to perform an equipment test.

microSD Card Port Using a microSD card for setup, data logs and software upgrades

Use a microSD (secure digital) card to save setup time by loading Installer Setup settings, Dealer Information, Holiday Schedules, and Custom Reminders to multiple thermostats. For troubleshooting help, you can save the thermostat Data Logs (Alerts
Log and Interaction Log) to a microSD card – then view them on your computer. Also use the microSD card to upgrade the thermostat software.

Loading Dealer Information and New Thermostat Software

  1. Visit http://thermostatsetup.honeywell.com to enter your dealer information or load new thermostat software.
    Using a microSD
  2. Connect a microSD USB Adapter to your computer to download the file(s).
  3. After the file(s) are downloaded, remove the microSD card from the adapter and insert into thermostat.

To use the microSD card in the thermostat
Using a microSD

  1. Slide card into the bottom of thermostat.
  2. Select the item to load or save.
  3. Follow the prompts on the screen.
    • To add information from the card to the thermostat, select Load from SD Card.
    • To put thermostat information on the card, select Save to SD Card.
      Using a microSD
      4 When you are finished, touch Done, then Home, and remove the microSD card.

To replace a thermostat

When you replace a thermostat, you must reset the RedLINK accessories before connecting them to the new thermostat. Follow the instructions below:
Portable Comfort Control

At the Portable Comfort Control:
Press and hold the blank space (or arrow) in the lower right hand corner of the screen until the display changes (hold for about 4 seconds). Press REMOVE, then YES to disconnect from the old thermostats. To reconnect the thermostat, go to Step 3.2.

At the Indoor Sensor, RedLINK Internet Gateway, Entry/Exit Remote, Vent-Filter Boost Remote or TrueSTEAM Wireless Adapter:
Press and hold the CONNECT button on the accessory until the status light glows amber (hold for about 10 seconds). To reconnect the thermostat, go to Step 3.2.

At the Equipment Interface Module (EIM):
Press and hold the CONNECT button on the EIM until
the CONNECTED LED glows amber (hold for about 10
seconds). Follow the prompts on the screen to connect
the new thermostat to the EIM.

Specifications and replacement parts

Operating Ambient Temperature

Thermostat: 32 to 120° F (0 to 48.9° C)
Portable Comfort Control: 32 to 120° F (0 to 48.9° C)
Wireless Outdoor Sensor: -40 to 140° F (-40 to 60° C)
Wireless Indoor Sensor: 0 to 120° F (-17.8 to 48.9° C)
-For Optimal Battery Life: 35 to 114° F (1.7 to 45.6° C)
Equipment Interface Module: -40 to 165° F (-40 to 73.9° C)
Return Air Sensor: 0 to 200° F (-17.8 to 93.3° C)
Discharge Air Sensor: 0 to 200° F (-17.8 to 93.3° C)
RedLINK Internet Gateway: 32 to 120° F (0 to 48.9° C)

Operating Relative Humidity
Thermostat: 5% to 90% (non-condensing)
Portable Comfort Control: 5% to 90% (non-condensing)
Wireless Outdoor Sensor: 0% to 100% (condensing)
Wireless Indoor Sensor: 5% to 90% (non-condensing)
Equipment Interface Module: 5% to 95% (non-condensing)
RedLINK Internet Gateway: 5% to 95% (non-condensing)
Physical Dimensions (height, width, depth)
Thermostat: 4-15/16 x 4-5/8 x 1-1/8 inches (126 mm x 118 mm x 29 mm)
Equipment Interface Module: 9-5/16 x 4-13/16 x 1-19/32 inches (91 x 147 x 42 mm)
Wireless Outdoor Sensor: 5 x 3-1/2 x 1-11/16 inches (127 x 89 x 43 mm)
Wireless Indoor Sensor: 2-7/8 x 1-7/8 x 15/16 inches (74 x 48 x 24 mm)
Portable Comfort Control: 6-1/4 x 3-1/8 x 1-5/8 inches (158 x 80 x 38 mm)
RedLINK Internet Gateway: 3-7/8 x 3-9/16 x 1-1/8 (99 x 91 x 29 mm)
RedLINK Communication
Frequency: 900 Mhz frequency range
Re-Sync Time: RedLINK devices re-establish communication within 6 minutes after AC power resumes.

Electrical ratings

Terminal Voltage (50/60 Hz) Max. Current Rating
W – OB 18 to 30 VAC and 750 mVDC 1.00A
Y (cooling) 18 to 30 VAC 1.00A
G (fan) 18 to 30 VAC 0.50A
W2 – Aux (heating) 18 to 30 VAC 0.60A
Y2 (cooling) 18 to 30 VAC 0.60A
A-L/A (output) 18 to 30 VAC 1.00A
U1/U1 30 VAC max. 0.50A

Accessories and replacement parts

Accessories / Replacement Parts Part Number
Equipment Interface Module YTHM5421R1010, THM5421R1021
Wireless Adapter for TrueZone, TrueSteam, or extend wireless range of EIM THM4000R1000
RedLINK Internet Gateway THM6000R7001
Wireless Entry/Exit Remote REM1000R1003
Wireless Vent and Filter Boost Remote HVC20A1000
Portable Comfort Control REM5000R1001
Wireless Outdoor Sensor C7089R1013
Wireless Indoor Sensor C7189R1004
Wired Outdoor Sensor 10k ohm NTC C7089U1006
Wired Wall-mount Indoor Sensor 10k ohm NTC C7189U1005
Wired Flush-mount Indoor Sensor 20k ohm NTC C7772A1004, C7772A1012
Wired Wall-mount Indoor Sensor 20k ohm NTC TR21
Wired Wall-mount Indoor Sensor 10k ohm NTC TR21-A
Supply or Return Air Sensor 10k ohm NTC C7735A1000
Supply or Return Air Sensor 20k ohm NTC C7041
Supply or Return Air Sensor 20k ohm NTC C7770A1006
Cover Plate (covers marks left by old thermostats) THP2400A1019
C-wire adaptor THP9045A1098
Model Numbering TH8321 TH8320 TH8110
Stages 3H/2C HP

2H/2C CONV

3H/2C HP

2H/2C CONV

1H/1C HP

1H/1C CONV

Residential or Commercial Mark Mark Mark
Dual Powered – C Wire or Battery Mark Mark Mark
Onboard Humidity Sensor Mark
Number of IAQ Relays 1 0 0
Number of Sensor Inputs 1 1 1
Economizer / TOD Output Mark Mark
Works with Optional Equipment Interface Module* Mark Mark Mark
Works with Optional TrueZONE Wireless Adapter* Mark Mark Mark

* The relay outputs and inputs on the thermostat do not function when used with an Equipment Interface Module or the TrueZONE Wireless Adapter.
* If the thermostat has been setup WITHOUT an Equipment Interface Module or the TrueZONE Wireless Adapter and you would like to add one, you must reset the thermostat back to factory defaults. Press MENU

  • Installer Options > scroll down to select Reset to Defaults.

Warning Icon DISCONNECT POWER BEFORE INSTALLATION. Can cause electrical shock or equipment damage.
Warning Icon This thermostat contains a Lithium battery which may contain Perchlorate material.
Perchlorate Material—special handling may apply. See www.dtsc.ca.gov/hazardouswaste/perchlorate
Warning Icon MERCURY NOTICE: If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact the Thermostat Recycling Corporation at www.thermostat-recycle.org or 800-238-8192 for information on how and where to properly and safely dispose of your old thermostat.

Must be installed by a trained, experience technician. Read these instructions carefully.
Failure to follow these instructions can damage the product or cause a hazardous
condition.

Need Help?
For assistance please visit
http://customer.resideo.com,
or call toll-free: 1-855-733-5465

Scan for more information
Qr Code

IconsResideo Inc., 1985 Douglas Drive North
Golden Valley, MN 55422

www.resideo.com

©2019 Resideo Technologies, Inc.
This product is manufactured by Resideo Technologies, Inc., Golden Valley, MN, 1 855-733-5465.
The Honeywell Home trademark is used under license from Honeywell International Inc. All rights reserved.

Documents / Resources

Honeywell VisionPRO Series Programmable Thermostat [pdf] Installation Guide
VisionPRO Series, Programmable Thermostat

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