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System
Installation
Guide
®
THX9321/9421 Prestige IAQ and RF EIM
With wireless accessories
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:
• Pr estige THX9321/9421 thermostat • Wir eless Outdoor Sensor
• Equipment Interface Module (EIM) • Wir eless Indoor Sensor
™
• Portable Comfort Contr ol
• RedLINK Inter net Gateway
Quick start guide
1
Install thermostat .
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System Installation Guide Your Honeywell advantage RedLINK™ Compatible Incr ease your content and pr ofit per job by including RedLINK™ accessories that meet your customers comfort and convenience needs. RedLINK accessories include the Wir eless Outdoor Sensor , Portable Comfort Contr ol (PCC), Equipment Interface Module (EIM), RedLINK Inter net Gateway , Wir eless Indoor Sensor , T rueSTEAM™ humidifier with Wir eless Adapter , T rueZONE™ zoning pan
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R C Y Y2 G L ® THX9321/9421 Prestige IAQ and RF EIM 1 Install thermostat MCR29241 MCR32386 MCR32387 • THX9421: Mount the thermostat and wir e to C and R terminals of the Equipment Interface Module (EIM), or to a separate 24 volt transformer (not pr ovided). • THX9321: Install and wir e as above if using EIM. If not, see pages 13-15. When used with the EIM, the relays in the thermostat do not function. See pages 10-17 for detailed wiring guideline
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System Installation Guide 3 Power optional accessories [If no wireless accessories are used, skip to Section 4.] Outdoor air sensor Indoor air sensor Portable Comfort Control MCR32937 MCR32938 MCR32939 Install 2 fresh AA lithium batteries Install 2 fresh AAA alkaline batteries Install 3 fresh AA alkaline batteries ™ RedLINK Internet Gateway The Honeywell RedLINK Inter net Gateway gives your customers r emote access to home climate-contr ol systems fr om any location with Inter
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S2 S2 S1 S1 CONNECTED CONNECT ® THX9321/9421 Prestige IAQ and RF EIM 4 Link thermostat to the wireless network (if used with an EIM or T rueZ ONE Wireless A dap t er) ™ Next, link all components and RedLINK accessories to the wir eless network. Initial powerup configuration When the thermostat is first activated, it will lead you thr ough the steps necessary to define and set up your system. The steps will change depending on the type of system
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MCR28847A System Installation Guide 5 Link optional accessories to wireless network While the Add Device scr een is displayed on the thermostat, press and release the CONNECT button on each wir eless device, as described below . Accessories need to be at least 2 feet away fr om the thermostat or EIM during the linking pr ocess. Press DONE after all devices have been linked Wireless outdoor sensor Wireless indoor sensor MCR32934 MCR32935 Press and release CONN
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M28849A ® THX9321/9421 Prestige IAQ and RF EIM 6 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 pr otected fr om dir ect sunlight. 2 Place sensor secur ely in bracket, facing away fr om wall. M28491 To install indoor air sensor 1 Remove the wallplate and mount it 4 to 6 feet above the floor on an
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System Installation Guide 7 Setup Installer options (ISU) T o configur e the thermostat, pr ess MENU > INSTALLER OPTIONS , then enter date code when pr ompted (printed on back of thermostat). Or pr ess MENU > EQUIPMENT STATUS to find the date code. A brief summary of installer options follows. Y ou can download a complete list of all options at http://customer .honeywell.com. Pr ess CREATE SETUP to set all system settings one by one. Pr ess VIEW/EDIT to selec
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® THX9321/9421 Prestige IAQ and RF EIM 7 Installer options (ISU) Thermostat functions marked in gray below require an EIM (see page 3). ISU Function ISU Function 5080 Return Air Sensor Type B 9120 System Modes Allowing Dehumidification B 5090 Terminals Wired to Discharge Air Sensor B 9130 Dehumidifier Fan Control B 5100 Discharge Air Sensor Type B 9140 Dehumidifier Lockout B 5110 A-Coil Low Temperature Cutoff B 9180 Dehumidification Away Mode B 6000 Select the Dry Contacts in the System B 9190
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System Installation Guide EIM wiring guide — conventional systems T ypical wiring of a conventional system with up to 3-stage heat and 2-stage cool with one transformer . FURNACE TRANSFORMER TO THERMOSTAT R EIM 24 120 C VAC VAC HEAT STAGE 1 CONV W POWER HEAT STAGE 2 W2 HEAT W3 COOL HEAT STAGE 3 STATUS FAN LEDS U1 G U2 FAN U3 A 4 COMPRESSOR Y STAGE 1 Y2 COMPRESSOR STAGE 2 1 JUMPERS 3 CONNECT OPTIONAL SENSORS TO S1 AND S2 TERMINALS SENSORS (MAX. 2 SENSORS) 2 MCR32945 1 See guides o
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® THX9321/9421 Prestige IAQ and RF EIM EIM wiring guide — heat pump systems T ypical wiring of a heat pump system with up to four -stage heat and two-stage cool with one transformer . TO THERMOSTAT EIM O/B CHANGEOVER VALVE HEAT PUMP BACKUP HEAT POWER O/B STAGE 1 AUX1 HEAT AUX1 AUX2 BACKUP HEAT COOL AUX2 STAGE 2 STATUS FAN LEDS COMPRESSOR U1 Y STAGE 1 U2 U3 L/A Y2 COMPRESSOR STAGE 2 3 G FAN RELAY L/A COMPRESSOR MONITOR OR 3 ZONE PANEL 1 JUMPERS AIR HANDLER TRANSFORMER R 24 12
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System Installation Guide EIM wiring guide — geothermal radiant heat T ypical wiring for geothermal radiant heat, geothermal for ced-air , and backup heat with one transformer . TO THERMOSTAT EIM O/B CHANGEOVER VALVE HEAT PUMP BACKUP HEAT POWER O/B STAGE 1 AUX1 HEAT AUX1 AUX2 BACKUP HEAT COOL AUX2 STAGE 2 STATUS FAN LEDS COMPRESSOR U1 Y STAGE 1 U2 U3 L/A COMPRESSOR Y2 STAGE 2 3 G FAN RELAY L COMPRESSOR MONITOR OR ZONE PANEL 3 GEOTHERMAL RADIANT HEAT STAGE 1 1 AIR HANDLER OPTIONAL
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Thermostat Thermostat Thermostat Thermostat ® THX9321/9421 Prestige IAQ and RF EIM Thermostat wiring guides — Prestige THX9321 T ypical wiring of a 3-heat / 2-cool heat T ypical wiring of a 2-heat / 2-cool con - pump system with one transformer ventional system with one transformer Transformer Transformer 120 24 120 24 C C VAC VAC VAC VAC R R O/B CHANGEOVER VALVE C W HEAT STAGE 1 C AUX/E W2 BACKUP HEAT Rc HEAT STAGE 2 Rc Y COMPRESSOR STAGE 1 Y COMPRESSOR STAGE 1 R R 5 Y2 C
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Thermostat Thermostat System Installation Guide Prestige THX9321 or EIM: Using universal relays to control heating or cooling Powering universal r elay with system Powering universal r elay with separate transformer (THX9321 shown) heating transformer (THX9321 shown) Transformer Transformer 120 24 120 24 C C VAC VAC VAC VAC R R C C HEAT STAGE 3 or COOL STAGE 3 or Rc Rc COOL STAGE 4 3 R R 2 2 U1 U1 1 1 HEAT STAGE 3 U1 U1 R U2 U2 3 Transformer 120 24 C 1 1 VAC VAC U2 U2 MCR32953 MC
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® 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. U3 U3 U3 U3 U2 U2 U2 U2 NON-POWERED U1 U1 HUMIDIFIER POWERED 24 120 FIELD INSTALLED VAC VAC HUMIDIFIER U1 U1 JUMPER BETWEEN R AND U1 RH RH RC RC R 24 120 R 24 120 24 VAC VAC 24 VAC VAC VAC VAC C C M
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System Installation Guide Economizer Module wiring guides T ypical wiring of a W7220 Economizer Module for a heat pump system, using a Pr estige THX9321 thermostat or Equipment Interface Module. Rooftop Unit O/BN Y1 Y2 AUX AUX 2G W7220 Economizer Module (See wiring guidelines provided with the product) SD-O/B OCC E-GND AUX Y2I Y2O Y1I Y1O C R O/B L/A YY2 AUX AUX 2G 1 2 Transformer R 120 24 Thermostat/EIM C VAC VAC MCR32959 T ypical wiring of a W7220 Economizer Module f
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® THX9321/9421 Prestige IAQ and RF EIM Economizer Module wiring guides T ypical wiring of a W7213/W7214 Economizer Module for a heat pump system, using a Pr estige THX9321 thermostat or Equipment Interface Module. Rooftop Unit O/BN Y1 Y2 AUX AUX 2G W7213/W7214 Economizer Module (See wiring guidelines provided with the product) O or B N 3 4 1 2 & 5 TR1 TR O/BL/A YY2 AUX AUX 2G 1 2 Transformer R 120 24 Thermostat/EIM VAC VAC C MCR32956 T ypical wiring of a W7212 Economizer
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System Installation Guide Economizer and TOD operation (ISU 2220) Commercial use only The Economizer can gr eatly r educe energy costs if configur ed pr operly . In some climates the cooling system may run hundr eds of hours, when it may not be r equir ed to maintain indoor comfort. In some conditions, ventilation with outdoor air can achieve the same level of comfort at lower cost. T ables below explain how the Economizer featur e maintain
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® THX9321/9421 Prestige IAQ and RF EIM Heat pump with outdoor temperature lockouts Outdoor temperatur e lockouts ar e 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 * No backup heat unless indoor temperature drops to selected Backup Heat Differential setting, or Backup Heat Upstage Timer expires. Heat pump stays O
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System Installation Guide Basic and Advanced Temperature Control Options (ISU 3010) Basic Options: The Installer Setup displays basic temperatur e contr ol options which include Backup Heat Dif fer ential, Backup Heat Upstage Timer and Outdoor T emperatur e Lockouts. Note: Outdoor T emperatur e Lockouts only apply to Heat Pump applications. Advanced Options: The Installer Setup displays both Basic and Advanced Options. Advanced temperatur e contr ol
