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THX9321 Prestige® 2.0
THX9421 Prestige® IAQ 2.0 with EIM
With wireless accessories
NOTE: The TH9321 Prestige is no longer available. There are different versions of
the TH9421 Prestige. The version in this document is no longer available.
Control for up to 4 Heat/2 Cool heat pump systems or up to 3 Heat/2 Cool
conventional systems for residential and commercial applications.
Installation guide for:
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Prestige THX9321/9421 thermostat
•
Equipment Interface Module (EIM)
•
Portable Comfort Control
Quick start guide
Install thermostat .................................................................. page 3
1
Install optional Equipment Interface Module (EIM) ...........3
2
Power optional accessories ...........................................................4
3
Link thermostat to wireless network .........................................5
4
Link optional accessories to wireless network ......................6
5
Install optional sensors ..................................................................7
6
Setup installer options ....................................................................8
7
Wiring guides ............................................................................10-17
Key features ...............................................................................18-25
Device replacement and specifications .........................26-27
DISCONNECT POWER BEFORE INSTALLATION. Can cause electrical shock or equipment damage.
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 your local waste management authority for instructions regarding recycling and proper disposal.
Must be installed by a trained, experienced technician. Read these instructions carefully. Failure to follow these
instructions can damage the product or cause a hazardous condition.
•
Wireless Outdoor Sensor
•
Wireless Indoor Sensor
•
RedLINK
™
TM
System
Installation
Guide
Internet Gateway
69-2490-07
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Table of Contents
Related Manuals for Honeywell Home Prestige TH9321
Summary of Contents for Honeywell Home Prestige TH9321
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Page 1: Table Of Contents
System Installation Guide THX9321 Prestige® 2.0 THX9421 Prestige® IAQ 2.0 with EIM With wireless accessories NOTE: The TH9321 Prestige is no longer available. There are different versions of the TH9421 Prestige. The version in this document is no longer available. Control for up to 4 Heat/2 Cool heat pump systems or up to 3 Heat/2 Cool conventional systems for residential and commercial applications. - Page 2 System Installation Guide Your Resideo advantage RedLINK™ Compatible Increase your content and profit per job by including RedLINK™ accessories that meet your customers' comfort and convenience needs. RedLINK accessories include the Wireless Outdoor Sensor, Portable Comfort Control (PCC), Equipment Interface Module (EIM), RedLINK Internet Gateway, Wireless Indoor Sensor, TrueSTEAM™...
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Page 3: Install Thermostat
THX9321/9421 Prestige IAQ and RF EIM ® Install thermostat MCR29241 MCR32386 MCR32387 • THX9421: Mount the thermostat and wire to C and R terminals of the Equipment Interface Module (EIM), or to a separate 24 volt transformer (not provided). • THX9321: Install and wire as above if using EIM. If not, see pages 13-15. When the THX9321 thermostat is used with the EIM, the relays in the thermostat do not function. -
Page 4: Power Optional Accessories
System Installation Guide Power optional accessories [If no wireless accessories are used, skip to Section 4.] Wireless Outdoor Sensor Wireless Indoor Sensor Portable Comfort Control MCR32938 MCR32937 MCR32939 Install 2 fresh AA lithium batteries Install 2 fresh AAA alkaline batteries Install 3 fresh AA alkaline batteries RedLINK Internet Gateway... -
Page 5: Link Thermostat To Wireless Network
THX9321/9421 Prestige IAQ and RF EIM ® Link thermostat to the wireless network (if used with an EIM or TrueZONE Wireless Adapter) Next, link all components and RedLINK accessories to the wireless network. ™ Initial powerup When the thermostat is first activated, it will lead you through the steps necessary to define and set up your system. -
Page 6: Link Optional Accessories To Wireless Network
System Installation Guide Link optional accessories to wireless network While the Add Device screen is displayed on the thermostat, press and release the CONNECT button on each wireless device, as described below. Accessories need to be at least 2 feet away from the thermostat or EIM during the linking process. -
Page 7: Install Optional Sensors
THX9321/9421 Prestige IAQ and RF EIM ® Install optional sensors [If no sensors are used, skip to Section 7.] To install outdoor air sensor 1 Mount the sensor on a vertical exterior wall, at least 6 inches below any overhang. Choose a location protected from direct sunlight. -
Page 8: Setup Installer Options
System Installation Guide Setup Installer options (ISU) - continued Create Setup: Press CREATE SETUP to set all system settings one by one. View/Edit Current Setup: Press VIEW/EDIT CURRENT SETUP to select a specific function and make quick changes. Set Up Diagnostics: Press SET UP DIAGNOSTICS to setup and test Delta T diagnostics. - Page 9 THX9321/9421 Prestige IAQ and RF EIM ® Installer options (ISU) - continued Thermostat functions require an EIM (see page 3). marked in gray below Function Function 5090 Terminals Wired to Discharge Air Sensor 9130 Dehumidifier Fan Control 5100 Discharge Air Sensor Type 9140 Dehumidifier Lockout 5110...
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Page 10: Wiring Guides
System Installation Guide EIM wiring guide — conventional systems Typical wiring of a conventional system with up to 3-stage heat and 2-stage cool with one transformer. FURNACE TRANSFORMER TO THERMOSTAT HEAT STAGE 1 CONV POWER HEAT STAGE 2 HEAT COOL HEAT STAGE 3 STATUS LEDS... - Page 11 THX9321/9421 Prestige IAQ and RF EIM ® EIM wiring guide — heat pump systems Typical wiring of a heat pump system with up to four-stage heat and two-stage cool with one transformer. TO THERMOSTAT CHANGEOVER VALVE HEAT PUMP BACKUP HEAT POWER STAGE 1 AUX1...
- Page 12 System Installation Guide EIM wiring guide — geothermal radiant heat Typical wiring for geothermal radiant heat, geothermal forced-air, and backup heat with one transformer. See page 19 for operation. TO THERMOSTAT CHANGEOVER VALVE HEAT PUMP BACKUP HEAT POWER STAGE 1 AUX1 HEAT AUX1...
- Page 13 THX9321/9421 Prestige IAQ and RF EIM ® Thermostat wiring guides — Prestige THX9321 Typical wiring of a 3-heat / 2-cool heat Typical wiring of a 2-heat / 2-cool pump system with one transformer conventional system with one transformer Transformer Transformer HEAT STAGE 1 CHANGEOVER VALVE AUX/E...
- Page 14 System Installation Guide Prestige THX9321 or EIM: Using U terminals to control heating or cooling Powering U terminals with system Powering U terminals with separate transformer (THX9321 shown) heating transformer (THX9321 shown) Transformer Transformer HEAT STAGE 3 or COOL STAGE 3 or COOL STAGE 4 HEAT STAGE 3 Transformer...
- Page 15 THX9321/9421 Prestige IAQ and RF EIM ® Wiring guide — IAQ equipment (EIM or thermostat) "U" terminals can be used for humidification, dehumidification or ventilation. With power supply Without power supply Typical hookup of powered humidifier. Typical hookup of non-powered humidifier. NON-POWERED HUMIDIFIER POWERED...
- Page 16 System Installation Guide Economizer Module wiring guides Typical wiring of a W7220 Economizer Module for a heat pump system, using a Prestige THX9321 thermostat or Equipment Interface Module. Rooftop Unit AUX AUX 2 W7220 Economizer Module (See wiring guidelines provided with the product) SD-O/B E-GND AUX AUX 2...
- Page 17 THX9321/9421 Prestige IAQ and RF EIM ® Economizer Module wiring guides Typical wiring of a W7213/W7214 Economizer Module for a heat pump system, using a Prestige THX9321 thermostat or Equipment Interface Module. Rooftop Unit AUX AUX 2 W7213/W7214 Economizer Module (See wiring guidelines provided with the product) O or B 2 &...
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Page 18: Key Features
System Installation Guide Economizer and TOD operation (ISU 2220) Commercial use only The Economizer can greatly reduce energy costs if configured properly. In some climates the cooling system may run hundreds of hours, when it may not be required to maintain indoor comfort. In some conditions, ventilation with outdoor air can achieve the same level of comfort at lower cost. - Page 19 THX9321/9421 Prestige IAQ and RF EIM ® Heat pump with outdoor temperature lockouts Outdoor temperature lockouts are optional. See Installer Setup options (ISU 3120). Backup heat allowed to run with heat pump (see table below) Heat pump only Backup heat lockout Heat pump with backup heat as needed * Compressor lockout Backup heat only...
- Page 20 System Installation Guide Basic and Advanced Temperature Control Options (ISU 3010) Basic Options: The Installer Setup displays basic temperature control options which include Backup Heat Differential, Backup Heat Upstage Timer and Outdoor Temperature Lockouts. Note: Outdoor Temperature Lockouts only apply to Heat Pump applications. Advanced Options: The Installer Setup displays both Basic and Advanced Options.
- Page 21 THX9321/9421 Prestige IAQ and RF EIM ® Humidification The thermostat reads the indoor humidity level and allows the user to set a humidification setting with or without window protection. The thermostat can be setup to control a humidifier in any system mode (Heat, Off, Cool [ISU 8060]).
- Page 22 System Installation Guide Commercial dehumidification The thermostat reads the indoor humidity level and allows the user to set a dehumidification setting. The thermostat controls the humidity level using the cooling system or a dehumidifier. Dehumidification Equipment Options: (ISU 9000) • A/C with Low Speed Fan •...
- Page 23 THX9321/9421 Prestige IAQ and RF EIM ® Southern Dehumidification Away Mode Southern Dehumidification Away Mode protects the home when unoccupied for long periods of time during hot and humid weather by maintaining the desired humidity and temperature settings. Southern Dehumidification Away Mode options: (ISU 9180 to 9200) •...
- Page 24 System Installation Guide Indoor sensor operation Temperature control The thermostat can be set to respond to its internal temperature sensor, or to an optional remote indoor sensor. If mul- tiple sensors are used, the thermostat will respond to an average of temperatures detected at each sensor.
- Page 25 THX9321/9421 Prestige IAQ and RF EIM ® Alerts and diagnostics Maintain close contact with your customers by providing more comfort and effi- ciency with alerts and diagnostics. Alerts and reminders can notify customers when maintenance or service is needed, and display your contact information to make it easy for them to reach you.
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Page 26: Device Replacement And Specifications
System Installation Guide Replacing system components To replace an Equipment Interface Module (EIM) Follow steps below to disconnect the thermostat and RedLINK accessories. See pages 5-6 to re-link devices. At the Thermostat 1 Press MENU > INSTALLER OPTIONS, then enter date code when prompted (printed on back of thermostat). - Page 27 THX9321/9421 Prestige IAQ and RF EIM ® Specifications & 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°...
- Page 28 69-2490—07 M.S. Rev. 09-21 | Printed in United States © 2021 Resideo Technologies, Inc. All rights reserved. The Honeywell Home trademark is used under license from Honeywell International, Inc. This product is manufactured by Resideo Technologies, Inc. and its affiliates.