THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ WITH EIM
68-0311—02
2
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number. If you have additional questions, need further information,
or would like to comment on our products or services, please write or phone:
1.
Your local Honeywell Environmental and Combustion Controls Sales Office (check white pages of your phone directory).
2.
Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
3.
http://customer.honeywell.com or http://customer.honeywell.ca
International Sales and Service Offices in all principal cities of the world. Manufacturing in Belgium, Canada, China, Czech
Republic, Germany, Hungary, Italy, Mexico, Netherlands, United Kingdom, and United States.
CONTENTS
Application ........................................... 1
Specifications ...................................... 3
Ordering Information ........................... 2
System Installation .............................. 8
When Installing this Product... .....................
Installing Equipment Interface Module (if used)
Selecting Discharge and Return Air Temperature Sensor
Mounting Locations .............................................. 10
Selecting Return Air Temperature Sensor Mounting Loca-
tion ....................................................................... 11
Selecting Thermostat Location .................... 12
Installing Wallplate ........................................ 12
Power Optional REDLINK™ Accessories ... 14
Linking Thermostat to Equipment Interface Mod-
ule (if used) .................................................... 15
Linking RedLINK™ Accessories ................. 16
Mounting Optional Accessories .................. 70
Alerts and Diagnostics ....................... 87
Delta T Diagnostics ....................................... 87
Before You Set Up Delta T Diagnostics ....... 87
Setting up Alerts and Diagnostics ............... 88
Delta T Alerts ................................................. 90
Delta T Alerts and Utility Saver Switches ... 91
Data Logs ....................................................... 91
Alerts Log ............................................................. 92
User Interactions Log ........................................... 93
Dry Contact Alerts ........................................ 95
Installer Tests ...................................... 68
Indoor Air Quality (IAQ) Control ......... 102
Humidification ............................................... 102
Set up Humidification ........................................... 102
Control Humidification Level ................................ 104
Dehumidification - Residential ..................... 105
Set up Dehumidification With Cooling System ..... 105
Set up Dehumidification With Whole House Dehumidifier
Set up Dehumidification Away Mode .................... 108
Control Dehumidification Level ............................. 108
Dehumidification - Commercial ................... 109
Set up Dehumidification With Cooling System ..... 109
Set up Dehumidification With Dehumidifier .......... 110
Control Dehumidification Level ............................. 112
Ventilation ...................................................... 112
Set up Ventilation ................................................. 113
IAQ Reminders ..................................... 116
Customizable Reminders ................... 116
USB Port ............................................... 119
Heat Pump and Backup Heat Operation
Portable Comfort Control ................... 129
Remote Indoor Sensors ...................... 130
Commercial Features .......................... 121
Ramp Rates ................................................... 123
Custom Names .............................................. 124
Remote Setback ............................................ 124
Economizer and Time of Day (TOD) Operation
Pre-Occupancy Purge ................................... 126
Staging Control ............................................. 97
Optional Accessories .......................... 128
Troubleshooting .................................. 159
Wiring ................................................... 135
EIM Wiring Diagrams .................................... 138
Geothermal Radiant Heat ............................. 100
THX9321 Thermostat Wiring Diagrams ....... 141
THX9321 Thermostat Wiring Diagrams Using Uni-
versal Relays to Control Heating or Cooling 142
Wiring IAQ Equipment or a Heat/Cool Stage to the
Universal Terminals ...................................... 149
Economizer Module Wiring Diagrams ......... 151
Wiring C7089U1006 Outdoor Sensor .......... 153
Wiring guide — Wired Indoor Sensors ........ 154