Page 1 ® THX9321 Prestige 2.0 and ® THX9421 Prestige with EIM PRODUCT DATA • Delta T Alerts and Diagnostics Alerts give customers a sense of security while allowing you to service or replace the equipment prior to a loss of heating or cooling. Based on limits you set at installation, customers can be alerted when their system is not operat- ing as expected.
Page 2: Table Of Contents
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...
Page 3: Specifications
Auto-On-Circ-Follow Schedule 40% to 80% RH. Electrical Ratings for: Humidity Display Range: Equipment Interface Module and the THX9321 Prestige 2.0 0% to 99%. Thermostat Humidity Sensor Accuracy: ± 5% RH from 30% to 50% RH NOTE: To find what terminals are available on the Equip- at 75 °F (24 °C).
Page 4 3-19/64 (84) 3-1/2 (89) 5-1/2 (140) 4-1/2 (115) (22) M33330 Fig. 4. Dimensions of THX9321 Prestige 2.0 cover plate in in. (mm). 3-5/16 (84) M34630 1-19/32 4-53/64 (123) (41) Fig. 1. Dimensions of THX9421 Prestige IAQ thermostat in in. (mm).
Page 5 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 1. Prestige Kits. Included in Kit Part Number Part Number Description THX9421R5021WW Thermostat - White Front, White Side THM5421R1021 Equipment Interface Module Prestige IAQ Kit YTHX9421R5101WW C7089R1013 Wireless Outdoor Sensor 50062329-001 Discharge/Return Sensors (Qty.
Page 6 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 2. Thermostat Replacement Parts and Accessories. Operating Ambient Operating Shipping Physical Dimensions in in. Product Part Number Temperature Relative Humidity Temperature (mm) Color(s) Thermostat THX9421R5021WW 32 to 120 °F 5% to 90% -20 to 120 °F 4-1/2 x 3-1/2 x 7/8...
Page 7 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 2. Thermostat Replacement Parts and Accessories. (Continued) Operating Ambient Operating Shipping Physical Dimensions in in. Product Part Number Temperature Relative Humidity Temperature (mm) Color(s) Discharge or Return C7735A1000* 0 to 200 °F -20 to 120 °F Probe:...
Page 8: System Installation
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM SYSTEM INSTALLATION When Installing this Product... 1. Read these instructions carefully. Failure to follow the instructions can damage the product or cause a hazard- ous condition. 2. Check the ratings given in the instructions to make sure the product is suitable for your application.
Page 9: Installing Equipment Interface Module (If Used
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM INSTALLATION OPTIONS ® ® The THX9321 Prestige 2.0 thermostat is wired directly to the equipment. The THX9421 Prestige IAQ thermostat is used with the Equipment Interface Module or with a TrueZONE Wireless Adapter. If using the Equipment Interface Module, see “Installing Equipment Interface Module (if used)”...
Page 10: Wiring 24 Vac Common
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Installing Equipment Interface 1. Mount the EIM near the HVAC equipment or on the equipment itself. Use screws and anchors as appropriate Module (if used) for the mounting surface.. 2.
Page 11: Selecting Return Air Temperature Sensor Mounting Loca Tion
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Selecting Return Air Temperature Sensor Mounting Location ALTERNATE MOUNTING LOCATION FOR DISCHARGE SENSOR. WHEN SETTING THE LIMITS, BE SURE TO CONSIDER THE AFFECT THAT THE DEHUMIDIFIER 1. Install the Return Air Temperature Sensor on the return HAS ON DELTA T.
Page 12: Selecting Thermostat Location
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Selecting Thermostat Location Install the thermostat about 5 ft. (1.5m) above the floor in an area with good air circulation at average temperature. See Fig. 16. MOUNT DISCHARGE BYPASS SENSOR HERE HUMIDIFIER VENTILATOR...
Page 13 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 4. Remove the wallplate from the wall and, if drywall, drill INSTALLATION WITH TRUEZONE WIRELESS ADAPTER 1. Wire to C and R terminals of the TrueZONE panel or to a two 3/16-in.
Page 14: Power Optional Redlink™ Accessories
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Mount Thermostat on Wallplate Portable Comfort Control 1. Install 3 fresh AA alkaline batteries. Align thermostat to wallplate and snap into place. See Fig. 19. MCR32939 Fig. 23. Indoor Air Sensor 1.
Page 15: Linking Thermostat To Equipment Interface Mod Ule (If Used)
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM PERFORMING INITIAL SETUP TrueSTEAM 1. Wire and power TrueSTEAM. 2. Connect the ABCD terminals between TrueSTEAM and Initial setup options define the type of system you are installing: the THM4000 Wireless Adapter. •...
Page 16: Linking Redlink™ Accessories
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 2. Follow the prompts on the thermostat screen until you 1. When you see the prompt Do you have RedLINK accessories to connect? touch Yes or No. reach the Wireless Setup screen. See Fig. 30. a.
Page 17 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Completing Initial Setup 3. Enter password (date code) and touch Done. See “Find- ing Your Password (Date Code) to Access Installer 5. Finish the setup by selecting the desired options. Touch Options”...
Page 18 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Locating the Connect Buttons on 6. Press and quickly release the CONNECT button on each new RedLINK accessory. RedLINK Accessories NOTE: For locations of CONNECT buttons on RedLINK accessories, see “Locating the Con- Wireless Outdoor Sensor nect Buttons on RedLINK Accessories”...
Page 19 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM TrueSTEAM ERROR MESSAGES: E1 29: Incompatible device cannot be connected. 1. Press and quickly release the CONNECT button on E1 34: Low RF signal. Move device to a different location and THM4000 Wireless Adapter.
Page 20 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 3. Type the sensor name and press Done. The sensor NOTE: The thermostat can work with up to 6 Vent Boost remotes. names are used when selecting which sensor to use for temperature, humidification, and dehumidification con- trol.
Page 21 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Installer Options Making Changes to Installer Setup The following options are available when you access Installer Follow these steps to set system options after initial Options. For more information on each, press Help on the installation.
Page 22 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 1000 Language English English Both Français Español 1010 Application Residential Both Residential Commercial 1020...
Page 23 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 1060 Outdoor Air Sensor Both This ISU automatically defaults to Yes when a Wireless Outdoor Sensor is connected.
Page 24 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 2010 Heating Equipment Conventional Forced Air Heat: Default varies Both Cycle Rate and Fan Operation automatically Type based on...
Page 25 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 2050 Geothermal Forced None Used for Both This thermostat has the capability of Air System Heating and controlling Geothermal Radiant Heat,...
Page 26 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 2090 What Terminals are None Default varies Commercial Cool Stage 4 is only available if ISU 1010 is Wired to Cool - based on Commercial.
Page 27 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 2130 Backup Heat 0 - 2 Both This ISU is only displayed when a backup Stages heat source is selected at ISU 2120 Backup Heat Type.
Page 28 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 2170 What Terminals are None Default varies Both THX9321 Thermostat Only: Wired to Backup based on This ISU is only displayed on the THX9321...
Page 29 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 2210 Backup Heat Fan No Fan Default varies Both This ISU is only displayed for heat pumps Operation based on when ISU 2180 Backup Heat Type is Other.
Page 30 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 3000 Changeover Manual Manual: Both Manual: The user must select heating or if ISU 1010 is cooling as needed to maintain the desired Automatic...
Page 31 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 3020 Finish With High Both ISU 3010 Temperature Control Options Cool Stage must be set to Advanced to view or adjust Finish With High Cool Stage.
Page 32 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 3030 Staging Control - Comfort Comfort Commercial ISU 3010 Temperature Control Options Cool Differential must be set to Advanced to view or adjust 1.0°...
Page 33 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 3050 Staging Control - Comfort Comfort Both ISU 3010 Temperature Control Options Heat Differential must be set to Advanced to view or adjust 1.0°...
Page 34 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 3080, Staging Control - Comfort Comfort Both A backup heat differential can be set on any 3090 Backup Heat system that has more than one heating...
Page 35 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 3120 Outdoor Both ISU 3120 Compressor Lockout / Balance Temperature Point requires an outdoor sensor.
Page 36 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 3130 Radiant Heat 1 to 12 CPH Both ISU 3010 Temperature Control Options Cycles Per Hour - must be set to Advanced to view or adjust Stage 2...
Page 37 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 3140 Cool Cycles Per 1 to 6 CPH Commercial ISU 3010 Temperature Control Options Hour - Stage 3 must be set to Advanced to view or adjust cycle rate.
Page 38 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 3150 Heat Cycles Per 1 to 12 CPH Default varies Both ISU 3010 Temperature Control Options Hour - Stage 1...
Page 39 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 3150 Heat Cycles Per 1 to 12 CPH Default varies Both ISU 3010 Temperature Control Options Hour - Stage 3...
Page 40 1° F to 30° F Range (1.5° C) which is appropriate for most applications. Do not change this setting unless advised to do so by Honeywell technical support. The throttling range controls the cycling of the system and helps to compensate for load changes, equipment sizing and thermostat mounting location.
Page 41 The default Heating Throttling Range is 2° F Range (1.5° C) which is appropriate for most applications. Do not change this setting unless advised to do so by Honeywell technical support. The throttling range controls the cycling of the system and helps to compensate for load changes, equipment sizing and thermostat mounting location.
Page 42 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 4020 Type of Override Standard Standard Commercial Standard: The system maintains temperatures Initiate Occupancy programmed for the occupied and unoccupied time periods.
Page 43 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 4050 Outdoor 0° F Commercial Off: The heating system will begin recovery Temperature used at the time that is scheduled.
Page 44 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 4060 Outdoor 40° F Commercial Off: The heating system will begin recovery Temperature used at the time that is scheduled.
Page 45 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 4070 Outdoor 90° F Commercial Off: The cooling system will begin recovery Temperature used at the time that is scheduled.
Page 46 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 4080 Outdoor 70° F Commercial Off: The cooling system will begin recovery Temperature used at the time that is scheduled.
Page 47 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 4120 Residential: None 70° F Both The thermostat maintains this Heat setting Entry / Exit Remote when the user presses Home / Occupied at 40°...
Page 48 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 5000 What Sensors are Check box on screen for each: None Both Wired Sensors requires an EIM (Equipment...
Page 49 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 5040 Which Sensors will Thermostat (Internal) Sensors are Both Select the sensors to be used for be used for Averaged temperature control.
Page 50 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 6000 Select the Dry Check box on screen for each: None Both Remote Setback and Dry Contact Alerts...
Page 51 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 6040 Remote Setback - 50° F to 70° F 64° F Commercial Remote Setback requires an EIM Standby Heat...
Page 52 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 6100 Water Leak Alert Normally Open Normally Open Both Dry Contact Alerts require an EIM Dry Contact Setup (Equipment Interface Module).
Page 53 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 6160 Fan Failure Alert Normally Open when Fan is Normally Both Dry Contact Alerts require an EIM Running...
Page 54 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 7110 Air Filter 1 Both Replacement Reminder Run Time: 10, 20, 30, 45, 60, 90, 120, 150 Note: “1”...
Page 55 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 8050 Humidification - Both Requires an optional outdoor sensor. Window Protection Off: The thermostat controls the humidity level to the user's desired humidity setting.
Page 56 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 8100 Clean Tank / Water Both This ISU is only displayed if ISU 8000 Filter Replacement Humidifier Type is Steam.
Page 57 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 9040 What Terminals are None Thermostat Both Number of Universal Outputs: Wired to A/C with defaults to the THX9321 Thermostat: U1 and U2 terminals...
Page 58 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 9080 Dehumidification Basic Basic Commercial See “Dehumidification - Commercial” Control beginning on page 109.
Page 59 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 9130 Dehumidifier Fan Thermostat Controls Fan Thermostat Both This ISU is only displayed when ISU 9000 Control Controls Fan Dehumidification Equipment is set to...
Page 60 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 10000 Ventilation Type None None Both None: The thermostat does not control ventilation.
Page 61 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 10120 Ventilation Percent 10% to 100% (in 10% Both The thermostat operates ventilation increments) On Time equipment based on a percentage entered...
Page 62 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 10130 Ventilation High Both Requires an outdoor sensor. Temperature 80° F to 110° F (in 5° F Lockout This ISU is only displayed when ISU 10000 increments)
Page 63 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 11050 UV Bulb 2 Off, 6, 12, 24 Calendar Months Both Replacement Reminder...
Page 64 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 13030 Allow Delta T Both This ISU is only displayed when ISU 13015 Diagnostics During Set Advanced Diagnostic Options is set to Dehumidification...
Page 65 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 13080 Allow Heat Delta T Minimum Setting No Limit Both This ISU only applies to Heating.
Page 66 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 13130 Allow Cool Delta T Minimum Setting No Limit Both This ISU only applies to Cooling.
Page 67 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 4. Installer Setup (ISU) Table. (Continued) Residential, Installer Setup Commercial Requires Number Name Settings Default or Both Notes 13170 Defrost Cycle None Both This ISU is only displayed if ISU 2010 Heating Equipment Type is Air to Air Heat 1 to 60 minutes (in 1 minute Pump.
Page 68: Installer Tests
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM INSTALLER TESTS Accessing Installer Tests 1. Press MENU on the home screen, then scroll down and Use the installer tests to check out the system: press Installer Options. • Equipment Test: Tests the heating, cooling, fan, and IAQ 2.
Page 69: Using The Equipment Test
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Using the Equipment Test Using the Wireless Signal Strength Test 1. Press Equipment Test on the Installer Test screen (see Fig. 61). Turn the equipment on/off as needed and then 1.
Page 70: Mounting Optional Accessories
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Mounting Optional Accessories MOUNTING C7089U1006 WIRED OUTDOOR TEMPERATURE SENSOR Mounting Outdoor Sensor Use the following steps to mount the sensor: 1. Remove the sensor from the mounting clip. Mount the sensor where: 2.
Page 71 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Mounting C7189U1005 Wired Indoor Sensor Mounting Entry/Exit Remote or Vent Boost Remote Use the following steps to mount the sensor: Mounting the remote is optional. 1. Remove the cover from the remote sensor (see Fig. 70). 1.
Page 72 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM OPERATION HOME. Touch to display Home screen. FAN. Select fan mode. SYSTEM. Select system mode (Heat/Cool). MENU. Touch to display options. Start here to set a program schedule. Current schedule. Touch an arrow to change temperature setting and select a Temporary or Permanent Hold.
Page 73: Setting The Fan
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Setting the time/date 3. Touch Done to save and exit. 1. Touch the current time. The screen displays Set Time/ Set Date. Done Fri, Jun 14, 2013 6:30 pm Fig.
Page 74: Adjusting Program Schedules
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Preset Energy-Saving Schedules • Touch Guide Me to create a schedule by answering simple questions. This thermostat uses default Energy Saver settings that can • Touch I’ll do it myself to manually create a program reduce your heating/cooling expenses by as much as 33%.
Page 75: Viewing Equipment Status
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Overriding schedules: residential use • To change the hold time, touch the Hold Until arrow buttons. This time can be adjusted up to the maximum time set by 1. Touch  or  to adjust the temperature (right side of the installer.
Page 76 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 3. Touch  or  to view the status of all the equipment 4. Review your selections on the last display, and touch your thermostat is controlling. Depending on how your Done to save your settings.
Page 77 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Setting custom events: 4. Review the settings and touch Done to save them. Touch Back, then Cancel to ignore the changes. commercial use This feature lets you customize temperature settings to be maintained during a specific event.
Page 78 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 4. Touch  or  to select the Heat and Cool temperatures. 4. Review the settings and touch Done to save them. Touch Back, then Cancel to ignore the changes. Done Fig.
Page 79 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Depending on how your thermostat was installed, it may delay or condensation on your windows. Use a higher number for up to 30 minutes before switching to REMOTE SETBACK if indoor air seems too dry.
Page 80: Customizing Screen Color
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Adjusting dehumidification settings: commercial use Se ng: This feature can control a dehumidifier or use your air conditioner to reduce humidity. 1. Touch MENU and select Dehumidification. Automa c MENU More Se ngs...
Page 81 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 4. If you select a predefined screen color, check the left 7. Touch the arrows on the slider bars to adjust the color, side of the screen to preview the color and touch Done to shading and brightness of the background color.
Page 82: Cleaning The Thermostat Screen
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 9. Touch Make Additional Adjustments to continue mak- 2. Select an option and follow prompts: ing changes, or touch Accept Color Selections when • Reminders to change filters you are satisfied with the selected colors and then touch •...
Page 83: Adjusting Security Settings
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Adjusting security settings Viewing dealer information You can adjust security options to prevent unauthorized Check dealer information if you need to contact your installer changes to system settings. for maintenance, repairs, or upgrades. 1.
Page 84 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 1. Press MENU 2. Press On, then press Next. 2. Scroll to select TEMPORARY SCHEDULE 3. Select option, then follow screen prompts Fig. 139. 3. Select the temperatures you would like to adjust based on the Utility Schedule.
Page 85: Advanced Features
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Advanced Features P + I CONTROL A conventional mechanical or electronic thermostat does not control temperature precisely at setpoint. Typically there is an ADAPTIVE INTELLIGENT RECOVERY (RESIDENTIAL USE offset (droop) in the control point as the system load changes. ONLY) Many factors contribute to offset including the switch Over time, the Prestige®...
Page 86 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Installer options Using the humidity display Installer Options require a password and should only be In some circumstances, the humidity displayed on the Home changed by a qualified technician. screen may not match humidity near the thermostat.
Page 87: Alerts And Diagnostics
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM UNIVERSAL INPUTS Before You Set Up Delta T Diagnostics (S1, S2, S3, S4) Refer to the information below for tips on installation and setup S1, S2, S3, and S4 are universal inputs that can be setup to of Delta T Diagnostics.
Page 88: Setting Up Alerts And Diagnostics
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 7. Delta T Diagnostics is only for non-zoned forced air 3. Select the Discharge and Return Air Sensor Type (10K). systems. IMPORTANT 8. The thermostat does not provide Heat or Cool Delta T 10K sensors must be used for Delta T Diagnostics.
Page 89 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 5. For Air-to-Air Heat Pumps, press the up/down arrows to 4. Press Set Up Diagnostics. set the maximum time duration of a defrost cycle. Default is 10 minutes. Delta T is not monitored during a defrost cycle.
Page 90: Delta T Alerts
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Set Delta T Limits • Display Delta T Alerts to User (ISU 13190; Default: Yes) • Allow Delta T Diagnostics: 1. Press Stage 1 to set the limits and run time (see Fig. —...
Page 91: Delta T Alerts And Utility Saver Switches
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Delta T Alerts are also displayed for performance related installed and provide an option to the user to turn off issues such as dirty air filter, blocked registers, loss of diagnostics temporarily while power is interrupted by the utility refrigerant, dirty a-coil, frozen a-coil, cracked heat exchanger, company.
Page 92: Alerts Log
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Alerts Log The Alerts Log stores a history of the most recent 25 alerts and records the date and time of each alert. In the Alerts Log, press any of the alerts for more information. You can also press Show Active Alerts to display the active alerts that are currently snoozed by the user.
Page 93: User Interactions Log
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM User Interactions Log The Performance Log records the following information: • Minimum and Maximum Delta T The User Interactions Log can help a service technician save • Minimum and Maximum Discharge Temperature time by determining if the issue is related to a system problem •...
Page 94 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Using the Data Logs Using the Performance Logs 1. Follow the steps in “Using the Data Logs” on page 94. TO ACCESS THE DATA LOGS Press Performance Logs. 1. From the Home screen, press Menu. 2.
Page 95: Dry Contact Alerts
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 4. Select the desired time period at the top of the screen 4. Select the log you want to save to USB. (Hourly, Daily, Weekly or Monthly). Use the Up/Down arrows to scroll for Delta T, Discharge Temperature, Return Temperature, Outdoor Temperature/Humidity and Indoor Temperature/Humidity.
Page 96 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM When the user presses the alert for more info, the Notification When the dry contact device detects a problem with the screen is displayed, prompting them to contact their dealer. system (for example, smoke detection), the thermostat will not See Fig.
Page 97: Staging Control
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 1. Wire the dry contact device to S1, S2, S3, or S4 termi- 6. If you are creating a custom alert, type the alert name nals at the EIM. into the text box and press Done.
Page 98 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Cool Differential NORMAL OPERATION When the Backup Heat Differential is set to Comfort, the The indoor temperature must rise to the selected differential thermostat uses backup heat as needed to keep the indoor setting before the thermostat turns on the stage of cooling.
Page 99 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Multistage Control 2. Default is Comfort. Adjust differentials as needed. Multistage Control keeps the high stage of the equipment running until the desired setpoint is reached. This setting is recommended for Geothermal Heat Pumps to allow the loop to rest.
Page 100: Geothermal Radiant Heat
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM HEAT PUMP AND BACKUP HEAT OPERATION 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...
Page 101 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Fossil Fuel Backup Heat (Backup Heat NOT 4. Select the Geothermal Radiant Heat Options. For exam- ple: If this zone is Geothermal Radiant Heat only – select Allowed to Run with Heat Pump) None.
Page 102: Indoor Air Quality (Iaq) Control
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM INDOOR AIR QUALITY (IAQ) CONTROL 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 set up to control a humidifier in any system mode in the Installer Setup (ISU 8060).
Page 103 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 2. If optional remote wireless indoor sensors are installed, 5. Select the system mode(s) to allow humidification. See you can choose which sensor you want to use for humid- Fig.
Page 104: Control Humidification Level
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 7. Set the desired lockout option. See Fig. 214. 15% deadband between the humidification and dehumidification settings. The thermostat will automatically switch between humidification and dehumidification to maintain the desired humidity level.
Page 105: Dehumidification - Residential
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Dehumidification - Residential 2. If optional remote wireless indoor sensors are installed, you can choose which sensor you want to use for dehu- The thermostat reads the indoor humidity level and allows the midification control.
Page 106 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 5. Select whether the U1, U2, or U3 terminals are Normally 1. Select the Dehumidification Equipment in ISU 9000. See Open or Normally Closed. See Fig. 220. Fig. 222. •...
Page 107 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 4. Select the terminals wired to the Whole House Dehumid- 7. Set the desired lockout option. See Fig. 228. ifier. See Fig. 225. Fig. 228. Fig. 225. NOTE: ISU 10140 gives the option to lockout ventila- tion during calls for dehumidification.
Page 108: Set Up Dehumidification Away Mode
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Set up Dehumidification Away Mode Control Dehumidification Level 1. Select Allowed at ISU 9180. See Fig. 231. 1. Press MENU, then scroll to select Dehumidification. 2. Press Auto to use the dehumidifier or cooling system to maintain your desired humidity level.
Page 109: Dehumidification - Commercial
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Dehumidification - Commercial High Humidity Comfort Reset (ISU 9100): This option uses the cooling system to lower the temperature up to 5° F below The thermostat reads the indoor humidity level and allows the the current cool setpoint until the desired humidity is reached.
Page 110: Set Up Dehumidification With Dehumidifier
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 2. If optional remote wireless indoor sensors are installed, you can choose which sensor you want to use for dehu- midification control. For example, you can use one sen- sor for humidification control, and another for dehumidification.
Page 111 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 2. If optional remote wireless indoor sensors are installed, will allow dehumidification if the last call was for you can choose which sensor you want to use for dehu- heat.
Page 112: Control Dehumidification Level
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Dehumidification Away Mode Press MENU Dehumidification Away Mode for a commercial application is identical to Dehumidification Away Mode for a residential application. See “Dehumidification Away Mode” on page 107 and “Set up Dehumidification Away Mode”...
Page 113: Set Up Ventilation
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Ventilation Fan Control (ISU 10060) • 70 to 74: Quite uncomfortable • 65 to 69: Somewhat uncomfortable • Thermostat Controls Fan The thermostat turns on the ventilator and the fan when Ventilate on High Indoor Humidity (ISU ventilation is needed.
Page 114 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 4. Select the Ventilation Fan Control. See “Ventilation Fan 7. Select a Ventilation Priority (see Fig. 254): c. Lockouts are Priority: The thermostat places a pri- Control (ISU 10060)” on page 113 for more information. See Fig.
Page 115 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 8. If Percent On Time was selected for ISU 10050, select or dehumidification. The thermostat will indicate whether the Ventilation Percent on Time. See Fig. 255. this meets or may not meet the ASHRAE 62.2 Standard or the Percent On Time setting.
Page 116: Iaq Reminders
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 4. Press MORE SETTINGS to change maintenance NOTE: Air Filter, Humidifier Pad, Dehumidifier Filter, and Ventilator Filter are displayed under Preferences reminders or set outdoor lockouts (if set to Yes, ventila- even if they have not been set up.
Page 117 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Custom Reminders include: 4. Press the up or down arrows to set the temperature, and press Next. A seasonal maintenance reminder will • Service Reminder appear when the outdoor temperature reaches the level —...
Page 118 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 7. The Fall Service Reminder will look like this on the Home 4. Type the reminder message, and press Done. Screen: Fig. 270. Fig. 267. 5. Press the up or down arrows to set the date when the To create a new custom reminder: New Custom Reminder should appear, and press Next.
Page 119: Usb Port
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 7. The preview of the custom reminder shows you what You can save the following to a memory stick and upload them you’ve selected. Press Done to accept the reminder, or individually to the thermostat: press Back to change it.
Page 120 Prestige thermostat 1. In a web browser on your computer, go to using the USB port. http://thermostatsetup.honeywell.com 2. Connect a USB device to your computer. 1. In a web browser on your computer, go to 3.
Page 121: Commercial Features
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM COMMERCIAL FEATURES The thermostat can be setup for residential or light commercial applications (ISU 1010). When the thermostat is setup for commercial, the thermostat meets commercial code, Title 24 and provides the following features: •...
Page 122 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Setting custom events: 4. Review the settings and touch Done to save them. Touch Back, then Cancel to ignore the changes. commercial use This feature lets you customize temperature settings to be maintained during a specific event.
Page 123: Ramp Rates
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 4. Touch  or  to select the Heat and Cool temperatures. 4. Review the settings and touch Done to save them. Touch Back, then Cancel to ignore the changes. Done Fig.
Page 124: Custom Names
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM automatically adjust the ramp rate based on outdoor conditions. This allows the thermostat to save energy by starting recovery at the optimum time as outdoor conditions change. NOTE: The thermostat uses an adjustable ramp rate when the thermostat is setup for commercial.
Page 125 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 2. Select the terminals wired to the Remote Setback Dry 4. Select a Remote Setback Time Delay. The Remote Set- Contact device (occupancy sensor) and press Next. back Time Delay forces the thermostat to wait before it switches from occupied settings to the standby settings.
Page 126: Pre-Occupancy Purge
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Economizer and Time of Day (TOD) Time of Day (TOD) Operation The thermostat can be set up for a Time of Day output in the installer setup. This output is commonly used to control lighting panels, turning them on for occupied periods and off for Economizer unoccupied periods.
Page 127: Battery Replacement
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Battery Replacement Wireless Indoor Sensor Wireless Outdoor Sensor M32988 MCR32937 M32990 Replace batteries in your outdoor sensor when a warning appears on the thermostat screen, about two months before MCR32933 batteries are depleted.
Page 128: Optional Accessories
The thermostat can be used with up to 6 Wireless Indoor Sensors. REDLINK™ INTERNET GATEWAY The Honeywell RedLINK Internet Gateway gives you remote ® access to your Prestige thermostat from the web, smart phone or tablet.
Page 129: Portable Comfort Control
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM PORTABLE COMFORT CONTROL The Portable Comfort Control communicates wirelessly with the thermostat, and can control up to 16 thermostats, though each thermostat can only be connected to 1 Portable Comfort Control.
Page 130: Remote Indoor Sensors
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM REMOTE INDOOR SENSORS For installation, see “Mounting C7189R1004 Wireless Indoor Sensor” on page 70, and “Mounting C7189U1005 Wired Indoor Sensor” on page 71. For wiring, see “Wiring guide — Wired Indoor Sensors”...
Page 131: Temperature Display
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Temperature Display The temperature reading displayed on the home screen is from the sensor or sensors that are being used for temperature control. In Fig. 313, the temperature reading is the average of the thermostat internal sensor and the MAIN LEVEL remote sensor.
Page 132 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM If you are sensing Humidity from two separate locations (one for humidification and another for dehumidification), you can select which humidity reading to display on the home screen. In Fig. 315, the humidity reading is from the Main Level Remote Sensor based on the setting in ISU.
Page 133 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Calibration - Outdoor Sensor Calibration - Indoor Sensor The C7089U1006 Outdoor Sensor is calibrated at the factory The C7189U1005 Wall Mount Temperature Sensor is and cannot be recalibrated in the field. calibrated at the factory and cannot be recalibrated in the field.
Page 134 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM BACKUP CONTROL 2. Press REMOVE, then YES to disconnect from the old thermostats. 3. To reconnect the thermostat, go to “Linking RedLINK™ This section explains when backup control is used. For Accessories”...
Page 135: Wiring
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM WIRING See Table 13 for Equipment Interface Module terminal descriptions and Table 14 for thermostat terminal descriptions. Table 13. Equipment Interface Module Terminal Designation Descriptions. Conventional System Heat Pump Terminal Description Terminal...
Page 136 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 14. THX9321 Terminal Designation Descriptions. Conventional System Heat Pump Terminal Description Terminal Description Common wire from secondary side of cooling Common wire from secondary side of cooling transformer (if 2 transformers). transformer.
Page 137 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Table 15. Wiring Diagrams by System Type. Wallplate Wiring Diagram System Type Reference Standard Heat/Cool Heat Pump with Auxiliary Heat Geothermal radiant heat Heat pump system with one transformer 2-heat / 2-cool conventional system with one transformer Heat pump system with two transformers 324...
Page 138: Eim Wiring Diagrams
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM EIM Wiring Diagrams 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...
Page 139 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 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 HEAT AUX1...
Page 140 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Typical wiring for geothermal radiant heat, geothermal forced-air, and backup heat with one transformer. TO THERMOSTAT CHANGEOVER VALVE HEAT PUMP BACKUP HEAT POWER STAGE 1 AUX1 HEAT AUX1 AUX2 BACKUP HEAT COOL AUX2...
Page 141: Thx9321 Thermostat Wiring Diagrams
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM THX9321 Thermostat Wiring Diagrams Typical wiring of a 3-heat / 2-cool heat pump system with one Typical wiring of a 3-heat / 2-cool heat pump system with two transformer. transformers.
Page 142: Thx9321 Thermostat Wiring Diagrams Using Uni Versal Relays To Control Heating Or Cooling
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM THX9321 Thermostat Wiring Diagrams Using Universal Relays to Control Heating or Cooling The THX9321 Thermostat and the EIM have universal outputs that can be configured for the following stages of heating and cooling, based on the terminals available.
Page 143 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM ZONE VALVE BOILER THERMOSTAT/EIM TO THERMOSTAT TRANSFORMER HEAT PUMP HEAT PUMP W W2 W3 Y Y2 G A AUX1 THERMOSTAT/EIM AUX2 RELAY OIL FURNACE R IS JUMPERED TO RH. THE BOILER CONTROLS THE CIRCULATOR PUMP IN THIS SYSTEM.
Page 144 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM THERMOSTAT/EIM TO THERMOSTAT FURNACE HEAT PUMP HEAT PUMP AUX1 AUX2 PUMP RADIANT HEAT ZONE MODULE VALVE TRANSFORMER M34525 Fig. 332. Geothermal radiant heat with geothermal forced air and backup heat using separate transformer for the radiant heat.
Page 145 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM THERMOSTAT/EIM THERMOSTAT/EIM TO THERMOSTAT TO THERMOSTAT CONV CONV FURNACE FURNACE RELAY BOILER THE BOILER IS CONTROLLING THE CIRCULATOR PUMP CONFIGURE THE THERMOSTAT TO ENERGIZE THE FAN IN THIS DIAGRAM. WITH A CALL FOR HEAT.
Page 146 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM THERMOSTAT/EIM TO THERMOSTAT CONV ZONE VALVE ZONE 1 RELAY BOILER TRANSFORMER HZ311, HZ322, OR HZ432 ZONE PANELS COULD BE USED TO CONTROL A FORCED AIR FURNACE ZONED WITH DAMPERS. THE BOILER IS CONTROLLING THE CIRCULATOR PUMP IN THIS DIAGRAM.
Page 147 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM THERMOSTAT/EIM THERMOSTAT/EIM TO THERMOSTAT TO THERMOSTAT CONV CONV ZONE 1 RELAY FURNACE RELAY BOILER ZONE 1 HOT WATER RELAY PANEL HZ311, HZ322, OR HZ432 ZONE PANELS COULD BE USED TO CONFIGURE THE THERMOSTAT TO ENERGIZE THE FAN CONTROL A FORCED AIR FURNACE ZONED WITH DAMPERS.
Page 148 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM THERMOSTAT/EIM TO THERMOSTAT AIR HANDLER HEAT PUMP HEAT PUMP AUX1 AUX2 M31487 Fig. 338. Wood stove with heat pump and backup electric strips. (For applications in which the thermostat only needs to run the blower fan when stove is hot).
Page 149: Wiring Iaq Equipment Or A Heat/Cool Stage To The Universal Terminals
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Wiring IAQ Equipment or a Heat/Cool Stage to the Universal Terminals To Equipment Interface Module “U” terminals can be used for humidification, dehumidification or ventilation. NON-POWERED HUMIDFIER POWERED FIELD INSTALLED HUMIDIFIER JUMPER BETWEEN R AND U1...
Page 150 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM HEAT STAGE 3, COOL STAGE 3, COOL STAGE 4 OR GEOTHERMAL RADIANT HEAT TRANSFORMER Fig. 345. Connecting a stage of heating or cooling to a universal relay (U1, U2, U3). 1 U1, U2, and U3 are normally open dry contacts when set up for a stage of heating or cooling.
Page 151: Economizer Module Wiring Diagrams
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Economizer Module Wiring Diagrams 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) AUX2-I...
Page 152 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM 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 &...
Page 153: Wiring C7089U1006 Outdoor Sensor
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Wiring C7089U1006 Outdoor Sensor Wiring must comply with applicable codes, ordinances and regulations: 1. Wire C7089U1006 Outdoor Sensor to S1, S2, S3, or S4 CAUTION terminals on the EIM. If leadwire provided is not long Electrical Interference (Noise) Hazard.
Page 154: Wiring Guide — Wired Indoor Sensors
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Wiring guide — Wired Indoor Sensors Use the S1, S2, S3, or S4 terminals for wired sensors. Wiring 2 TR21 sensors (20k ohm) and 1 TR21-A sensor (10k CAUTION ohm) for temperature averaging network.
Page 155 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM ZONING The following diagrams show the wiring for zoning with different IAQ equipment. W1/E FURNACE W1/E DS/BK TRANSFORMER C7735A1000 DATS DATS DATS THM4000R POWER WIRELESS SETUP CONNECTED CONNECT THM4000R1000 PRESTIGE THERMOSTATS CAN BE POWERED BY ANY TRANSFORMER.
Page 156 Select the terminals wired to the humidifier at ISU 8030 (U1, U2, U3). In Fig. 356, the humidifier is wired to U1. To humidify in all zones, set ISU 8070 Humidification Control to Humidify on Demand: Humidifier Controls Fan. Call Honeywell zoning at 1-800-828- 8367 if you need assistance with the zoning controls.
Page 157 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Zoning and Ventilation TrueZONE PANEL FURNACE PRESTIGE W1/E IAQ EIM ERV/HRV DS/BK INTERLOCK B AUX W SELECT THE TERMINALS WIRED TO THE VENTILATOR AT ISU 10020 (U1, U2, U3). TO VENTILATE IN ALL ZONES, SET ISU 10060 VENTILATION FAN CONTROL TO EQUIPMENT CONTROLS FAN.
Page 158 ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Zoning FAQs Q: How does the Prestige or Prestige IAQ thermostat control a humidifier in zoned systems? A: If ISU 8070 Humidification Control is set to Humidify on Demand: Thermostat Controls Fan, then the zone panel will close the dampers for the other zones with a call for humidification.
Page 159: Troubleshooting
® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM TROUBLESHOOTING Table 17. Troubleshooting. Symptom Action • Check circuit breaker and reset if necessary. Screen is blank • Make sure power switch at heating & cooling system is on. •...
Page 160 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North ® U.S. Registered Trademark Golden Valley, MN 55422 © 2013 Honeywell International Inc. 68-0311—02 M.S. Rev. 04-13 customer.honeywell.com Printed in United States...

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