THX9321 Prestige® 2.0
THX9421 Prestige® IAQ 2.0 with EIM
With wireless accessories
® U.S. Registered Trademark.
Copyright © 2012 Honeywell International Inc.
All rights reserved.
System
Installation
Guide
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:
Quick start guide
• Prestige THX9321/9421 thermostat
• Equipment Interface Module (EIM)
• Portable Comfort Control
• Wireless Outdoor Sensor
• Wireless Indoor Sensor
• RedLINK
™
Internet Gateway
1
Install thermostat ..........................................................page 3
2
Install optional Equipment Interface Module (EIM) ................3
3
Power optional accessories ...................................................4
4
Link thermostat to wireless network ......................................5
5
Link optional accessories to wireless network ......................6
6
Install optional sensors ..........................................................7
7
Setup installer options ...........................................................8
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 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, experienced technician.
Read these instructions carefully. Failure to follow
these instructions can damage the product or cause a hazardous condition.
69-2490-05
TM
