Honeywell Home THX9321 Prestige 2.0, THX9421R5021WW, THX9421 Prestige IAQ with EIM, THX9421R5021SG, THX9421R5021WG User Manual

...

THX9321 Prestige® 2.0 and

THX9321 Prestige® 2.0

(Obsolete)

THX9421 Prestige

IAQ with EIM

HOME FAN

SYSTEM

SET TO

INDOOR

45% Humidity

following schedule

OUTDOOR

80°/55% Humidity

STATUS

cool mode

Fri, Apr 26, 2019

6:30 pm

INTERNET

POWER

REDLINK

HOME FAN

SYSTEM

SET TO

INDOOR

45% Humidity

following schedule

OUTDOOR

80°/55% Humidity

STATUS

cool mode

Fri, Apr 26, 2019

6:30 pm

HOME

COOL

OFF

THX9421 Prestige

APPLICATION

The Prestige 2.0 and Prestige IAQ Systems feature an effortless, 7-Day programmable color touchscreen thermostat that provides control of temperature, humidification, dehumidification, and ventilation for up to 4 Heat/2 Cool heat pump systems or up to 3 Heat/2 Cool conventional systems for residential and commercial applications.

FEATURES

• 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),

IAQ with EIM

RedLINK Internet Gateway, Wireless Indoor Sensor, TrueZONE™ zoning panel with Wireless Adapter, Vent Boost Remote and Entry/Exit Remote.

• Also Compatible with Equipment Remote Module (ERM) ERM5220R

• Customizable Service Reminders

Set up to 10 service reminders. Choose from the pre-set options or customize your own. Reminders based on date or the outdoor temperature.

• 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 operating as expected. The system alert will instruct customers to contact you for assistance. Requires Equipment Interface Module.

• Delta T Installer Test

Save time by viewing Delta T while running a system test to verify proper operation. Requires Equipment Interface Module.

• Sensor Inputs EIM - S1, S2, S3, S4

Assignable inputs allow you to setup Indoor and Outdoor Temperature Sensors, Discharge and Return Air Sensors or Dry Contact Devices. Dry Contact Devices can be used to trip pre-set or customized alerts on the thermostat home screen. Requires Equipment Interface Module.

• Data Logs

The thermostat stores an Alerts Log, User Interactions Log and a Performance Log to quickly determine if an issue is caused by a system error or an accidental user error. Note: The Performance Log only applies to the THX9421 thermostat.

• Selectable for Residential and Light Commercial Applications

One thermostat does it all to meet the needs of Residential and Light Commercial applications. Simply select Residential or Commercial during the installer setup. If Commercial is selected, the thermostat will use commercial language, meet building codes and offer 365 day holiday scheduling.

• USB Port for Quick Installer Setup

Save time by using a USB stick to upload installer settings, and service reminders in one simple step.

• Selectable Sensors

When paired with a Wireless Indoor Sensor(s) you have the ability to choose which sensor(s) to use for temperature, humidification and dehumidification. They can be used in combination for temperature averaging—or individually—to condition humidity levels in separate spaces.

PRODUCT DATA

68-0311-08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Application ............................................................. 1

Features .................................................................. 1

Specifications ....................................................... 3

System Installation ............................................. 8

When Installing this Product... ................................................................................. 8

Finding Your Password (Date Code) ....................................................................... 8

Installation Options ............................................ 9

Guidelines for Installing RedLINK Devices .......................................................... 9

Installing Equipment Interface Module (if used) ............................................... 10

Wiring 24 Vac Common ............................................................................................. 10

Selecting Discharge and Return Air Temperature Sensor Mounting Locations 10

Selecting Return Air Temperature Sensor Mounting Location ..................... 11

Installing Discharge and Return Air Temperature Sensors ............................. 12

Selecting Thermostat Location .................. .............................................................. 12

Installing Wallplate ...................................................................................................... 12

Power Optional REDLINK™ Accessories ........ 14

Performing Initial Setup .................................... 15

Linking Thermostat to Equipment Interface Module (if used) .. .................... 15

Linking RedLINK™ Accessories ................................................................................ 16

Completing Initial Setup ............................................................................................ 17

Adding RedLINK Accessories to the Thermostat ................................................ 17

Locating the Connect Buttons on RedLINK Accessories ................................ 18

Finding Your Password (Date Code) to Access Installer Options ...... ............ 20

Installer Options ............. ............................................................................................... 21

Making Changes to Installer Setup ........................................................................ 21

Installer Tests ........................................................ 65

Accessing Installer Tests ............................................................................................. 65

Using the Equipment Test .......................................................................................... 66

Using the Wireless Signal Strength Test ............................................................... 66

Mounting Optional Accessories ....................... 67

Operation ............................................................... 69

Setting the Time/Date ................................................................................................ 70

Setting the Fan .............................................................................................................. 70

Setting System Mode ............................ ....................................................................... 70

Preset Energy-Saving Schedules ............................................................................ 71

Adjusting Program Schedules .................................................................................. 71

Overriding Schedules: Residential Use .................................................................. 72

Overriding Schedules: Commercial Use ................................................................ 72

Viewing Equipment Status ........................................................................................ 72

Setting Vacation Hold: Eesidential Use ................................................................. 73

Setting Holiday/Event Schedules: Commercial Use ........................................ 73

Setting Custom Events: Commercial Use ............................................................. 74

Setting Holiday Schedule: Commercial Use ........................................................ 74

Setting Holiday Override: Commercial Use ......................................................... 75

Initiating Occupancy Mode: Commercial Use .................................................... 75

Remote Setback: Commercial Use .......................................................................... 76

Adjusting Humidification Settings .................. ........................................................ 76

Adjusting Dehumidification Settings: Residential Use .................................... 76

Adjusting Dehumidification Settings: Commercial Use .................................. 77

Adjusting Ventilation Settings .................................................................................. 77

Customizing Screen Color ......................................................................................... 78

Setting Preferences ...................................................................................................... 79

Cleaning the Thermostat Screen ............................................................................. 79

Adjusting Security Settings ....................................................................................... 80

Viewing Dealer Information ...................................................................................... 80

Advanced Features ....................................................................................................... 82

Installer Options ............. ............................................................................................... 83

Using the Temperature Display ................................................................................ 83

Using the Humidity Display ...................................................................................... 83

Outputs (U1, U2, U3) ........................................... 83

Inputs (S1, S2, S3, S4) ......................................... 84

Alerts and Diagnostics ........................................ 84

Delta T Diagnostics ...................................................................................................... 84

Before You Set Up Delta T Diagnostics ................................................................. 84

Setting up Alerts and Diagnostics .......................................................................... 85

Delta T Alerts .................................................................................................................. 88

Delta T Alerts and Utility Saver Switches .............................................................. 89

Data Logs ........................................................................................................................ 89

Dry Contact Alerts ........................................................................................................ 93

Set Up the Dry Contact Alerts .................................................................................. 94

Staging Control ............................................................................................................. 95

Heat Pump and Backup Heat Operation ....... 98

Heat Pump with Outdoor Temperature Lockouts ............................................. 98

Geothermal Radiant Heat .......................................................................................... 99

Indoor Air Quality (IAQ) Control ....................... 100

Humidification .............................................................................................................. 100

Dehumidification - Residential ................................................................................ 103

Dehumidification - Commercial .............................................................................. 108

Ventilation ...................................................................................................................... 112

IAQ Reminders ...................................................... 116

Customizable Reminders ................................... 117

USB Port ................................................................. 119

Loading Dealer Information ..................................................................................... 120

Updating Thermostat Software (Prestige IAQ Only) ........................................ 120

Commercial Features .......................................... 120

Overriding Schedules: Commercial Use ............................................................... 121

Setting Holiday/Event Schedules: Commercial Use ........................................ 121

Setting Custom Events: Commercial Use ........... .................................................. 121

Setting Holiday Schedule: Commercial Use ........................................................ 122

Setting Holiday Override: Commercial Use ............................................... .......... 123

Ramp Rates .................................................................................................................... 123

Custom Names .............................................................................................................. 124

Remote Setback ............................................................................................................ 124

Economizer and Time of Day (TOD) Operation .................................................. 126

Pre-Occupancy Purge ................................................................................................ 126

Battery Replacement .................................................................................................. 127

Optional Accessories ........................................... 128

Portable Comfort Control .................................. 129

Remote Indoor Sensors ...................................... 130

Indoor Sensor Operation ............................................................................................ 130

Wireless Indoor Sensor ............................................................................................... 130

Backup Control ..................................................... 133

Replacing a Thermostat ..................................... 133

Replacing an Equipment Interface Module .. 134

Wiring ...................................................................... 134

EIM Wiring Diagrams .................................................................................................. 137

THX9321 Thermostat Wiring Diagrams .............................................................. 140

THX9321 Thermostat Wiring Diagrams Using IAQ Relays to Control Heating or

Cooling ............................................................................................................................. 141

Wiring IAQ Equipment or a Heat/Cool Stage to the U Terminals ................ 148

Economizer Module Wiring Diagrams ................................................................... 150

Wiring C7089U1006 Outdoor Sensor ................................................................. 153

Wiring guide — Wired Indoor Sensors .................................................................... 154

Zoning ..................................................................... 155

Zoning and Humidification ....................................................................................... 156

Zoning and Ventilation ............................................................................................... 157

TrueDRY Dehumidifier with Zoning ....................................................................... 157

FAQs ......................................................................... 158

Troubleshooting ................................................... 159

Regulatory Information ..................................... 159

68-0311—08 2

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

SPECIFICATIONS

Thermostat Description:

Feature Description

Powering method • Common wire only

System types (up to 4 heat/2 cool heat pump and up to 3 heat/2 cool conventional)

Changeover Manual or Auto changeover

System setting Em Heat-Heat-Off-Cool-Auto

Fan setting Auto-On-Circ-Follow Schedule

Electrical Ratings for:

Equipment Interface Module and the THX9321 Prestige

2.0 Thermostat

NOTE: To find what terminals are available on the Equip-

ment Interface Module and the Prestige Thermostats, see “Terminal Designations” below the table.

Terminal

W - O/B 18 to 30 VAC 1.00A

Y (cooling) 18 to 30 VAC 1.00A

G (fan) 18 to 30 VAC 0.50A

W2 - Aux 1 (heating) 18 to 30 VAC 0.60A

W3 - Aux 2 (heating) 18 to 30 VAC 0.60A

Y2 (cooling) 18 to 30 VAC 0.60A

A-L/A (Output) 18 to 30 VAC 1.00A

, U1 U2, U2 U3, U3

• Gas, oil or electric heat with air conditioning

• Warm air, hot water, highefficiency furnaces, heat pumps, steam and gravity

• Cool only

selectable

Voltage

(50/60 Hz)

Max. Current

Rating

18 to 30 VAC 0.50A

Humidification Setting Range:

10% to 60% RH.

Dehumidification Setting Range:

40% to 80% RH.

Humidity Display Range:

0% to 99%.

Humidity Sensor Accuracy: ± 5% RH from 30% to 50%

RH at 75 °F (24 °C).

Cool Indication:

Prestige 2.0 and Prestige IAQ displays “Cool On” when the

thermostat turns the cooling on.

Heat Indication:

Prestige 2.0 and Prestige IAQ displays “Heat On” when the

thermostat turns the heating on.

Auxiliary Heat Indication:

Prestige 2.0 and Prestige IAQ displays “Auxiliary Heat On”

when the thermostat turns the auxiliary heat on.

Interstage Differential:

Comfort: The thermostat keeps the indoor temperature

within 1 degree of the setpoint (droop less control). The thermostat turns on stage 2 when the capacity on stage 1 reaches 90%.

When the interstage differential is set to 1.0 or higher, the

thermostat stages the equipment based on how far the indoor temperature is from the setpoint (ISU 3030 to

3090). See page 31 for more information.

Clock Accuracy: ± 1 minute per month at 77 °F (25 °C). ± 2

minutes per month over the operating ambient temperature range.

Mounting Means:

Thermostat mounts directly on the wall in the living space

using mounting screws and anchors provided. Fits a horizontal 2 x 4 in. junction box.

Equipment Interface Module (EIM) mounts on HVAC

equipment or on a wall in the equipment room.

Terminal Designations:

— Equipment Interface Module: R, RC, RH, C, W-O/B,

W2-AUX 1, W3-AUX 2, Y, Y2, G, A-L/A, U1 U1, U2 U2,

U3 U3, S1 S1, S2 S2, S3 S3, S4 S4, A, B, C, D — THX9421 Thermostat: R, C — THX9321 Thermostat: R, RC, C, W-O/B, W2-AUX/E,

Y, Y2, G, A-L/A, K, U1 U1, U2 U2

Power Consumption of THX9421/THX9321:

Full brightness = 3.0 VA 1/2 brightness = 2.1 VA Backlight off = 1.9 VA

RedLINK Communication:

Frequency: 900 Mhz frequency range Re-Sync Time: RedLINK devices re-establish communica-

tion within 6 minutes after AC power resumes.

Temperature Setting Range:

Heating: 40 to 90 °F (4.5 to 32 °C). Cooling: 50 to 99 °F (10 to 37 °C).

Temperature Sensor Accuracy: ± 1.5 °F at 70 °F (0.75 °C

at 21.0 °C)

3-1/2

(89)

4-1/2 (115)

3-5/16 (84)

7/8

(22)

M34630

Fig. 1. Dimensions of THX9421 Prestige IAQ thermostat

in in. (mm).

3 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

M34262

1-25/32

(46)

5-33/64

(140)

2-1/8

(54)

4-21/64

(110)

1-25/32

(46)

6-7/8 (175)

2-1/8

(54)

(127)

M33329A

6-13/16 (173)

3-5/16 (84)

1-7/16

(36)

3-7/8

(99)

Fig. 2. Dimensions of THX9421 Prestige IAQ cover plates

in in. (mm).

7-29/32 (201)

3-19/64 (84)

5-1/2 (140)

M33330

Fig. 3. Dimensions of THX9321 Prestige

2.0 thermostat

in in. (mm).

Table 1. Prestige Kits.

Kit

Part Number

Prestige IAQ Kit YTHX9421R5101WW

Part Number Description

THX9421R5021WW Thermostat - White Front, White Side

THM5421R1021 Equipment Interface Module

C7089R1013 Wireless Outdoor Sensor

Prestige IAQ Kit YTHX9421R5085WW

50062329-001 Discharge/Return Sensors (Qty. 2)

THX9421R5021WW Thermostat - White Front, White Side

THM5421R1021 Equipment Interface Module

50062329-001 Discharge/Return Sensors (Qty. 2)

Prestige IAQ Kit YTHX9421R7001WW

THX9421R5021WW Thermostat - White Front, White Side

THM5421R1021 Equipment Interface Module

50062329-001 Discharge/Return Sensors (Qty. 2)

68-0311—08 4

THM6000R7001 RedLINK Internet Gateway

C7189R1004 Wireless Indoor Temperature/Humidity Sensor

C7089R1013 Wireless Outdoor Temperature/Humidity Sensor

Fig. 4. Dimensions of THX9321 Prestige 2.0 cover plate

in in. (mm).

9-11/32

(237)

1-19/32

(41)

M33331

4-53/64 (123)

8-7/8 (225)

Fig. 5. Dimensions of Equipment Interface Module in in.

(mm).

Included in Kit

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 2. Thermostat Replacement Parts and Accessories.

Operating

Ambient

Product Part Number

Thermostat THX9421R5021WW 32 to 120 °F

THX9421R5021BB

OBSOLETE

THX9421R5021SG

OBSOLETE

THX9421R5021WG

OBSOLETE

THX9321R5030

OBSOLETE

Equipment Interface Module

Equipment remote module

Wireless Adapter (For TrueZONE, Tru eSTEAM or extend wireless range of EIM)

RedLINK Internet Gateway

Portable Comfort Control

Wireless Entry/Exit Remote

Wireless Vent and Filter Boost Remote

Wireless Outdoor Sensor

Wireless Indoor Sensor

Wired Outdoor Sensor (10K ohm Negative Temperature Coefficient)

Wired Wall Mount Indoor Sensor (10K ohm Negative Temperature Coefficient)

YTHM5421R1010* THM5421R1021

ERM5220R1018 Compressor:

THM4000R1000 -40 to 165 °F

THM6000R1002

OBSOLETE

THM6000R7001 32 to 120 °F

REM5000R1001 32 to 120 °F

REM1000R1003 32 to 120 °F

HVC20A1000 32 to 120 °F

C7089R1013 -40 to 140 °F

C7189R1004 0 to 120 °F

C7089U1006 -40 to 120 °F

C7189U1005 45 to 88 °F

Tem per atu re

(0 to 48.9 °C)

32 to 120 °F (0 to 48.9 °C)

-40 to 165 °F (-40 to 73.9 °C)

-40 to 155 °F (-40 to 68 °C) Boiler: 30 to 130 °F (-1 to 54 °C)

(-40 to 73.9 °C)

32 to 120 °F (0 to 48.9 °C)

(0 to 48.9 °C)

(-40 to 60 °C)

(-17.8 to 48.9 °C)

For optimal Battery Life: 35 to 114 °F (1.7 to 45.6 °C)

(-40 to 48.9 °C)

(7 to 32 °C)

Operating Relative

Humidity

5% to 90% Non-Condensing

5% to 95% Non-Condensing

0% to 99% Non-Condensing

5% to 95% Non-Condensing

5% to 90% Non-Condensing

0% to 100% Condensing

5% to 90% Non-Condensing

5% to 95% Non-Condensing

95%

5% to Non-Condensing

Shipping

Tem pera tur e

-20 to 120 °F (-28.9 to 48.9 °C)

-20 to 165 °F (-28.9 to 73.9 °C)

-20 to 120 °F (-28.9 to 48.9 °C)

-40 to 120 °F (-40 to 48.9 °C)

-20 to 120 °F (-28.9 to 48.9 °C)

-40 to 130 °F (-40 to 54.4 °C)

-20 to 120 °F (-28.9 to 48.9 °C)

Physical Dimensions in in.

(mm) Color(s)

4-1/2 x 3-1/2 x 7/8 (115 x 88 x 22)

6-13/16 x 3-7/8 x 1-7/16 (173 x 99 x 36)

9-11/32 x 4-53/64 x 119/32 (237 x 123 x 41)

6-39/64 x 6-7/8 x 131/64" (168 x 175 x 38)

5-9/16 x 4-3/8 x 1-1/4 (141 x 112 x 32)

6 x 4-7/8 x 2-1/2 (152 x 124 x 64)

3-7/8 x 3-9/16 x 1-1/8 (99 x 91 x 29 mm)

6-1/4 x 3-1/8 x 1-5/8 (158 x 80 x 38)

3-15/16 x 1-15/16 x 5/8 (101 x 50 x 16)

5 x 3-1/2 x 1-11/16 (127 x 89 x 43)

2-7/8 x 1-7/8 x 15/16 (74 x 48 x 24)

1-1/2 (38) - -

2-9/32 x 1-1/2 x 11/16 (58 x 38 x 18)

FrontWhite, Side-White

FrontBlack, Side-Black

FrontSilver, SideGray

FrontWhite, Side-Gray

Arctic White

Gray

Black

White

FrontWhite, Side-Gray

Arctic White

Gray

Arctic White

Premier White

5 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 2. Thermostat Replacement Parts and Accessories. (Continued)

Operating

Product Part Number

Wired Wall Mount Indoor Sensor (20K ohm Negative Temperature Coefficient)

Wired Wall Mount Indoor Sensor (10K ohm Negative Temperature Coefficient)

Wired Flush Mount Indoor Sensor (20K ohm Negative Temperature Coefficient)

Discharge or Return Air Sensor (10K ohm Negative Temperature Coefficient)

Discharge or Return Air Sensor (20K ohm Negative Temperature Coefficient)

Occupancy Sensor for Remote Setback (Requires an Equipment Interface Module)

THX9421 Coverplate (covers marks left by old thermostats)

TR21 45 to 99 °F

TR21-A 45 to 99 °F

C7772A1004 45 to 99 °F

C7772A1012 45 to 99 °F

C7735A1000* 0 to 200 °F

C7041 - - - - - - 4-3/16 x 2-5/16 x 1-

C7770A1006 45 to 99 °F

WSK-24 Receiver:

THP2400A1027W (Includes 2 cover plates)

THP2400A1027B (Includes 2 cover plates)

THP2400A1027G (Includes 2 cover plates)

Ambient

Tem per atu re

(7 to 37 °C)

(- 17.8 to 93.3 °C)

(7 to 37 °C)

- 5 to 140 °F (-21 to 60 °C)

Door Sensor:

-4 to 140 °F to 60 °C)

(-20

PIR Sensor:

-4 to 104 °F

(-20 to 40 °C)

- - - - - - Small = 5-33/64 x 4-

Operating Relative

Humidity

5% to 95% Non-Condensing

- - -20 to 120 °F

5% to 95% Non-Condensing

- - - - Receiver:

Shipping

Tem pera tur e

-40 to 150 °F (-40 to 65.5 °C)

(-28.9 to 48.9 °C)

-40 to 150 °F (-40 to 65.5 °C)

Physical Dimensions in in.

(mm) Color(s)

4-9/16 x 3 x 7/8 (116 x 76.5 x 22)

4-1/2 x 2-3/4 x 5/16 (114 x 70 x 8)

Probe: 3-3/4 x 1/4 (77 x 6.4)

Cap Diameter: 2-7/16 (62)

11/16 (107 x 59 x 43)

Probe: 6 x 1/4 (152 x 6.4)

3.6 x 3.4 x 1.2 (91.4 x 86.4 x 30.5)

Door Sensor:

1.4 x 2.3 x 0.6 (35.8 x 57.6 x 15.2)

PIR Sensor:

2.8 x 3.9 x 1.1 (71 x 100 x 28)

21/64 (140 x 110), Large = 6-7/8 x 5 (175 x 127)

White

Brushed Stainless Steel

Gray

- -

White

Black

Gray

68-0311—08 6

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 2. Thermostat Replacement Parts and Accessories. (Continued)

Operating

Ambient

Product Part Number

THX9321 Coverplate (covers marks left by old thermostats)

C-wire adapter THP9045A1098 -40 to 163 °F

50028399-001 - - - - - - 7-29/32 x 5-1/2 (201 x

Tem per atu re

(-40 to 73 °C)

Operating Relative

Humidity

5% to 90% Non-Condensing

Shipping

Tem pera tur e

-40 to 185 °F (-40 to 85 °C)

Physical Dimensions in in.

(mm) Color(s)

140)

- - Gray

White

* Prestige IAQ Kits and YTHM5421R1010 Kit include 50062329-001 Discharge/Return Air Sensors. Replacement Dis-

charge/Return Air Sensor part number is C7735A1000.

7 68-0311—08

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 hazardous condition.

2. Check the ratings given in the instructions to make sure the product is suitable for your application.

3. Installer must be a trained, experienced service technician.

4. After completing installation, use these instructions to verify the product operation.

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Finding Your Password (Date Code)

You will need the thermostat password to:

• Make changes to the Installer Setup.

•Setup Diagnostics.

• Perform an Installer Test.

• View Data Logs.

• Add, remove, rename or view connected RedLINK accessories.

• Reset the thermostat to Factory Default settings.

The password (Date Code) is located on the back of the thermostat. It can also be found by following these steps:

1. Touch Menu.

2. Select Dealer Information.

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Password (Date Code)

Fig. 6. Finding thermostat password.

Dealer Informaon

M38033

68-0311—08 8

Fig. 7. Finding thermostat password.

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

THX9421 THERMOSTAT –

2 WIRES FOR POWER

RedLINK TO EQUIPMENT INTERFACE MODULE

RedLINK TO TrueZONE WIRELESS ADAPTER

THX9421 THERMOSTAT –

2 WIRES FOR POWER

THX9321 THERMOSTAT

WIRED D IRECTLY TO EQUIPMENT

MCR34631A

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)” beginning on page 10.

If using a TrueZONE wireless adapter, follow the installation instructions that came with the TrueZONE, and go to “Selecting Thermostat Location” beginning on page 12.

Guidelines for Installing RedLINK Devices

— When installing more than one Thermostat and

Equipment Interface Module, mount the Equipment Interface Modules at least 2 feet apart for best RedLINK performance. No minimum distance is required between the Thermostats if the Thermostat is linked to an Equipment Interface Module.

—When the Thermostat is wired directly to the equip-

— To determine if a RedLINK device will communicate

ment (No Equipment Interface Module and No TrueZONE Wireless Adapter), mount the Thermostats at least 2 feet apart for best RedLINK performance.

properly in the installed location, during the connection process, press and quickly release the connect button on the RedLINK device at the desired mounting location. If the RedLINK device connects,

then it will work reliably during normal operation. If the RedLINK device does NOT connect, try a new location. During the connection process, the signal is sent at low power and during normal operation the signal is sent at high power.

— To connect a RedLINK device, make sure to press

and quickly release the connect button on the RedLINK device. Press and holding the connect button down too long will not allow the device to connect.

— If you link the Thermostat to the TrueZONE Wireless

Adapter, you will NOT be able to do the following: control humidification, dehumidification or ventilation, setup a program schedule remotely from a computer, smart phone or tablet, work with the Wireless Indoor Sensor, Entry / Exit Remote or the Vent and Filter Boost Remote. To use these features, wire the Thermostat directly to the zone panel or use an Equipment Interface Module.

— If you are using a RedLINK device from a previous

installation, you must reset the device first before you re-connect it to the new Thermostat/Equipment Interface Module. See page 134 for more information.

9 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

CAUTION

Installing Equipment Interface Module (if used)

If no Equipment Interface Module is used, skip to “Selecting Thermostat Location” beginning on page 12.

NOTE: If an EIM is mounted inside a metal cabinet, such

NOTE: If you install more than one thermostat and EIM,

as a commercial rooftop unit, it is recommended to use a THM4000R1000 Wireless Adapter for extended wireless range. Mount the Wireless Adapter outside the metal cabinet and connect to the ABCD terminals at the EIM. The Wireless Adapter functions as a remote antenna for the EIM. After it is wired to the EIM, it automatically takes over as the antenna for RedLINK communication. For best RedLINK performance, avoid mounting the Wireless Adapter above the roof deck or outside the exterior walls.

the EIMs must be at least 2 feet apart for best RedLINK performance.

WIRELESS

ADAPTER

EIM

THM4000R

POWER

WIRELESS SETUP

CONNECTED

CONNECT

Fig. 8.

1. Mount the EIM near the HVAC equipment or on the

equipment itself. Use screws and anchors as appropriate for the mounting surface..

2. To wire the EIM, strip 1/4” insulation, then insert wires (see Fig. 9). For wiring diagrams, see “Wiring” beginning on page 134.

O/B

AUX1

AUX2

MCR32389

Fig. 9.

Wiring 24 Vac Common

• Single-Transformer System—Connect the common side of the transformer to the C screw terminal of the EIM. Leave the metal jumper wires in place between R, RC, and RH.

• Two-Transformer System—Connect the common side of the cooling transformer to the C screw terminal of the EIM. Remove the metal jumper wire between RC and RH. Connect the hot side of heating transformer to RH and leave the jumper wire between R and RC and connect the hot side of cooling transformer to R or RC.

Electrical Hazard. Can cause electrical shock or equipment damage.

Disconnect power before wiring.

The Equipment Interface Module (EIM) can be mounted vertically on the HVAC equipment or on a wall in the equipment room.

Selecting Discharge and Return Air Temperature Sensor Mounting Locations

Refer to the guidelines below and Fig. 10–14 for mounting locations of the Discharge and Return Air Temperature Sensors.

Selecting Discharge Air Temperature Sensor Mounting Location

1. Mount the Discharge Air Temperature Sensor on the

supply duct in a location where the air is mixed well. Mount the Discharge Air Temperature Sensor out of sight of the A-Coil/Heat Exchanger when possible. See Fig. 10.

2. When possible, mount the Discharge Air Temperature Sensor upstream of a Steam Humidifier, a Fan Powered Humidifier or a Dehumidifier that is ducted to the supply. See Fig. 11–12.

3. If space does not allow a Discharge Air Temperature Sensor upstream of a Steam Humidifier or Fan Powered Humidifier, mount the Discharge Air Temperature Sensor downstream of the Humidifier. See Fig. 11. When setting the Delta T Limits (see “Set Delta T Limits” on page 87), be sure to consider the affect that the humidifier has on Delta T.

68-0311—08 10

4. If a Bypass Humidifier is installed, mount the

MOUNT DISCHARGE SENSOR HERE

M33074

HEAT

EXCHANGER

BLOWER

VENTILATOR

DEHUMIDIF IER

MOUNT RETURN SENSOR HERE

DOWNSTREAM OF VENTILATOR OR DEHUMIDIFIER

A-COIL

MOUNT RETURN SENSOR HERE

MOUNT DOWNSTREAM OF BYPASS HUMIDIFIER, DEHUMIDIFIER OR VENTILATOR

HEAT

EXCHANGER

BLOWER

VENTILATOR

DEHUMIDIF IER

MOUNT DISCHARGE SENSOR HERE

MOUNT DOWNSTREAM OF BYPASS HUMIDIFIER

BYPASS

HUMIDIFIER

M33078A

Discharge Air Temperature Sensor downstream of the Bypass Humidifier. See Fig. 13–14.

Selecting Return Air Temperature Sensor Mounting Location

1. Install the Return Air Temperature Sensor on the

return duct in a location where the air is mixed well. Mount the Return Air Temperature Sensor downstream of a Bypass Humidifier, Dehumidifier or Ventilator. See Fig. 10–14.

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

ALTERNATE MOUNTING LOCATION FOR DISCHARGE SENSOR. WHEN SETTING THE LIMITS, BE SURE TO CONSIDER THE AFFECT THAT THE DEHUMIDIFIER HAS ON DELTA T.

DEHUMIDIF IER

MOUNT DISCHARGE SENSOR HERE

ABOVE CENTER OF A-COIL

MOUNT RETURN SENSOR HERE

DOWNSTREAM OF DEHUMIDIFIER

HEAT

EXCHANGER

BLOWER

UPSTREAM OF DEHUMIDIFIER

M33076A

Fig. 10.

ALTERNATE MOUNTING LOCATION FOR DISCHARGE SENSOR. WHEN SETTING THE LIMITS, BE SURE TO CONSIDER THE AFFECT THAT THE HUMIDIFIER HAS ON DELTA T.

VENTILATOR

DEHUMIDIF IER

MOUNT RETURN SENSOR HERE

DOWNSTREAM OF VENTILATOR OR DEHUMIDIFIER

Fig. 11.

STEAM OR

FAN

POWERED

HUMIDIFIER

HEAT

EXCHANGER

BLOWER

MOUNT DISCHARGE SENSOR HERE

ABOVE CENTER OF A-COIL

UPSTREAM OF STEAM OR FAN POWERED HUMIDIFIER

M33075A

Fig. 12.

Fig. 13.

11 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

CAUTION

MOUNT RETURN SENSOR HERE

MOUNT DOWNSTREAM OF BYPASS HUMIDIFIER, DEHUMIDIFIER OR VENTILATOR

HEAT

EXCHANGER

BLOWER

VENTILATOR

DEHUMIDIF IER

MOUNT DISCHARGE SENSOR HERE

BYPASS

HUMIDIFIER

M33079A

M32995

5 FEET

[1.5 METERS]

YES

M19925

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.

Fig. 14.

Installing Discharge and Return Air Temperature Sensors

Use the following steps to mount the Discharge/Return Air Sensors:

1. Attach plastic cover to the sensor probe.

2. Drill 1/4-inch hole for the sensor probe and mount it

to the ductwork with enclosed screws (see Fig. 15).

3. Connect wires to S1, S2, S3, or S4 terminals at the EIM.

4. Setup the S1, S2, S3, or S4 terminals in the Installer Setup at the thermostat.

Fig. 15. Mounting Discharge/Return Air Sensor.

Fig. 16. Selecting thermostat location.

Do not install the thermostat where it can be affected by: — Drafts or dead spots behind doors and in corners. — Hot or cold air from ducts. — Radiant heat from sun or appliances. — Concealed pipes and chimneys. — Unheated (uncooled) areas such as an outside wall

behind the thermostat.

Installing Wallplate

Electrical Hazard. Can cause electrical shock or equipment damage.

Disconnect power before wiring.

The thermostat can be mounted horizontally on the wall or on a 4 in. x 2 in. (101.6 mm x 50.8 mm) wiring box.

1. Separate wallplate from thermostat.

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68-0311—08 12

M38034

Fig. 17. Separate wallplate from thermostat (THX9421).

2. Position and level the wallplate (for appearance only).

3. Use a pencil to mark the mounting holes.

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

MCR34688

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MCR38035

CR2032

4. Remove the wallplate from the wall and, if drywall, drill two 3/16-in. holes in the wall, as marked. For firmer material such as plaster, drill two 7/32-in. holes. Gently tap anchors (provided) into the drilled holes until flush with the wall.

5. Position the wallplate over the holes, pulling wires through the wiring opening. See Fig. 18.

6. Insert the mounting screws into the holes and tighten.

Fig. 18. Mounting wallplate (THX9421).

Insert Coin Cell Battery in Thermostat

Place coin cell battery in thermostat. Be sure to follow polarity markings on thermostat. See Fig. 19.

NOTE: Coin cell battery saves time and date during a

power loss.

INSTALLATION WITH TRUEZONE WIRELESS ADAPTER

1. Wire to C and R terminals of the TrueZONE panel or to

a separate 24 volt transformer (not provided). See Fig. 20.

2. Snap thermostat onto wallplate after wiring is complete.

THX9321 Installation

THERMOSTAT WIRED DIRECTLY TO THE HVAC EQUIPMENT OR ZONE PANEL

1. Refer to “THX9321 Thermostat Wiring Diagrams”

beginning on page 140.

2. Snap thermostat onto wallplate after wiring is complete.

INSTALLATION WITH EQUIPMENT INTERFACE MODULE (EIM)

1. Connect power and common from the EIM to the Rc

and C terminals at the thermostat or use a separate 24 volt transformer (not provided) to power the thermostat.

2. Snap thermostat onto wallplate after wiring is complete.

NOTE: Note: When the THX9321 thermostat is used with

an EIM, the relays in the thermostat do not function.

INSTALLATION WITH TRUEZONE WIRELESS ADAPTER

1. Connect power and common from the TrueZONE

panel to the Rc and C terminals at the thermostat or use a separate 24 volt transformer (not provided) to power the thermostat.

2. Snap thermostat onto wallplate after wiring is complete.

Fig. 19. Insert coin cell battery (THX9421)

THX9421 Installation

INSTALLATION WITH EQUIPMENT INTERFACE MODULE (EIM)

1. Wire to C and R terminals of the EIM or to a separate

24 volt transformer (not provided). See Fig. 20.

2. Snap thermostat onto wallplate after wiring is complete.

NOTE: When the THX9321 thermostat is used with a

TrueZONE Wireless Adapter, the relays in the thermostat do not function.

Fig. 20. Inserting wires in thermostat terminal screws

(THX9421).

13 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

MCR32938

Mount Thermostat on Wallplate

Align thermostat to wallplate and snap into place. See Fig. 19.

Fig. 21. Mount thermostat (THX9421).

POWER OPTIONAL REDLINK™ ACCESSORIES

Portable Comfort Control

1. Install 3 fresh AA alkaline batteries.

MCR32939

Fig. 23.

Indoor Air Sensor

1. Install 2 fresh AAA alkaline batteries.

1. Install batteries or power the optional RedLINK

accessories.

2. If no RedLINK accessories are used, skip to “Linking Thermostat to Equipment Interface Module (if used)” beginning on page 15.

3. If no RedLINK accessories are used and there is no EIM or TrueZONE Wireless Adapter, skip to “Completing Initial Setup” beginning on page 17.

Outdoor Air Sensor

1. Install 2 fresh AA lithium batteries.

MCR32937

Fig. 22.

Fig. 24.

RedLINK™ Internet Gateway

1. Connect power cord to an electrical outlet not con-

trolled by a wall switch.

2. Connect ethernet cable to router and the RedLINK Internet Gateway.

LINK

RED

POWER

INTERNET

Fig. 25.

M36568

68-0311—08 14

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

THM4000R1000

MCR38036

TrueSTEAM

CONNECT

CONNECTED

TrueSTEAM (Obsolete)

1. Wire and power TrueSTEAM.

2. Connect the ABCD terminals between TrueSTEAM

and the THM4000 Wireless Adapter.

3. Adjust the DIP Switches on TrueSTEAM as follows when using the Wireless Adapter:

•DIP3: UP

•DIP4: UP

•DIP5: DOWN

Fig. 26. Powering TrueSTEAM wireless adapter.

Entry/Exit Remote or Vent Boost Remote

1. Remove the cover.

2. Insert the CR2450 coin cell battery (included) into

the slot at the bottom of the remote. See polarity marking on the remote.

PERFORMING INITIAL SETUP

Initial setup options define the type of system you are installing:

• Residential or commercial

• Non-zoned or zoned

• Used with or without an Equipment Interface Module (THM5421)

• Used with or without the TrueZONE Wireless Adapter (THM4000)

1. Follow prompts on the screen to select the appropriate options.

Fig. 28.

NOTE: If you are connecting the thermostat to the True-

ZONE Wireless Adapter (THM4000), refer to the TrueZONE instructions to link the thermostat and RedLINK accessories.

MCR33269

Fig. 27. Installing Entry/Exit Remote or Vent Boost

Remote battery.

3. The LED will briefly flash green. If it flashes red, bat-

tery is not good.

Linking Thermostat to Equipment Interface Module (if used)

1. Press and quickly release the CONNECT button on

the EIM. Make sure the Connected light is flashing green.

Fig. 29. EIM CONNECT button.

NOTE: If the Connected light does NOT flash green,

another system may be in the listening mode. Please exit the listening mode at the other system and then try again.

• Green flashing: In Listening Mode. System is ready

to add RedLINK devices.

• Green steady: RedLINK devices are

communicating.

• Red: RedLINK device(s) not communicating.

Check EIM and RedLINK devices.

15 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

2. Follow the prompts on the thermostat screen until you reach the Wireless Setup screen. See Fig. 30.

Fig. 30.

3. While the Connected light is flashing green on the

EIM, press Next on the thermostat. After a short delay, the screen will display Device Connected.

1. When you see the prompt Do you have RedLINK accessories to connect? touch Yes or No. a. If you select No, continue to step 5. b. If you select Yes, you will be prompted to Press

Connect on New Accessories. Continue to step 2.

NOTE: Accessories must be at least 2 feet away from the

thermostat or EIM during the linking process.

2. While the Add Device screen is displayed (listening mode), press and quickly release the CONNECT button on each new RedLINK accessory.

NOTE: For locations of CONNECT buttons on

RedLINK accessories, see “Locating the Connect Buttons on RedLINK Accessories” beginning on page 18.

Fig. 31.

4. Press Next, as directed on screen, to link RedLINK

accessories.

Linking RedLINK™ Accessories

Fig. 32. Connect RedLINK accessories.

Fig. 33. Thermostat in listening mode.

3. After a short delay (up to 20 seconds), check the ther-

mostat to confirm the connection of each RedLINK accessory.

Done

Fig. 34. Thermostat in listening mode.

4. Touch Done at the thermostat after all new RedLINK

accessories are connected.

NOTE: The thermostat displays a countdown timer

while in the listening mode. If it detects no activity for 15 minutes, it exits the listening mode.

68-0311—08 16

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Installer Opons

Done

Wireless Device Manager

Completing Initial Setup

5. Finish the setup by selecting the desired options.

Touch Done after you select the last option you want to change. See “Installer Options” beginning on page 21 for a full listing of setup options.

Fig. 35. Scheduling options.

6. The thermostat now displays its Home screen and the

thermostat setup is complete.

3. Enter password (date code) and touch Done. See “Finding Your Password (Date Code) to Access Installer Options” beginning on page 20 for more information.

Fig. 38.

4. Select Wireless Device Manager.

Fig. 36. Thermostat home screen.

Adding RedLINK Accessories to the Thermostat

If you want to add RedLINK accessories after the thermostat has been setup, follow these steps.

1. Touch Menu.

2. Select Installer Options.

Fig. 37.

Fig. 39.

5. Select Add Device to display the Add Device screen.

The thermostat is now in listening mode.

Add Device

Fig. 40.

NOTE: Accessories must be at least 2 feet away from the

thermostat or EIM during the linking process.

17 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Done

MCR28847A

NOYES

CONNECT MORE?

M28482

6. Press and quickly release the CONNECT button on each new RedLINK accessory.

NOTE: For locations of CONNECT buttons on

RedLINK accessories, see “Locating the Connect Buttons on RedLINK Accessories” beginning on page 18.

Fig. 41. Thermostat in listening mode.

7. After a short delay (up to 20 seconds), check thermo-

stat to confirm the connection of each RedLINK accessory.

8. Touch Done at the thermostat after all new RedLINK accessories are connected.

Locating the Connect Buttons on RedLINK Accessories

Wireless Outdoor Sensor

1. Press and quickly release the CONNECT button on

the Wireless Outdoor Sensor. After a short delay (up to 15 seconds), the thermostat will display “Wireless Outdoor Sensor added.”

Fig. 43. Wireless outdoor sensor connect button.

Portable Comfort Control

1. Press CONNECT on the Portable Comfort Control

display screen.

Fig. 42. Thermostat in listening mode.

NOTE: Thermostat displays a count-down timer while in

the listening mode. If it detects no activity for 15 minutes, it exits listening mode.

CONNECT

WIRELESS SETUP

MCR32942

Fig. 44. Portable Comfort Control connect button.

2. Press DONE on the Portable Comfort Control when it

displays “Connected.”

3. Press “No” at the next screen to save and exit, or press “Yes” if you need to connect additional thermostats to the Portable Comfort Control. See Fig. 45.

NOTE: The Portable Comfort Control can control up to 16

thermostats.

Fig. 45. Connect additional thermostats to Portable

Comfort Control.

68-0311—08 18

4. Follow the same linking procedure as above to connect additional thermostats.

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Press and hold the blank space (or arrow may be present)

MCR32934

MCR32935

ERROR MESSAGES:

E1 29: Incompatible device cannot be connected. E1 34: Low RF signal. Move device to a different location and try again. E1 38: Make sure the thermostat, EIM, or TrueZONE Wireless Adapter is in Wireless Setup mode, and the Portable Comfort Control is at least 2 feet away (600 mm).

NOTE: The linking procedure will time out if there is no

keypress for 30 minutes. To begin again, press and hold in the lower right corner of the screen until the display changes (about 3 seconds). See Fig. 46.

TrueSTEAM

1. Press and quickly release the CONNECT button on

THM4000 Wireless Adapter. After a short delay, the CONNECTED status light will glow steady green.

TrueSTEAM

THM4000R1000

MCR38036

Fig. 48. Connect button on TrueSTEAM wireless adapter.

Wireless Indoor Sensor

1. Press and quickly release the CONNECT button. After

a short delay, the status light (see Fig. 49) will glow green for 15 seconds. If the status light turns red, the sensor did not link with the thermostat.

Fig. 46. Restarting the linking process.

RedLINK Internet Gateway

1. Press and quickly release the button on the side of

the Internet Gateway. After a short delay, the RedLINK status light will glow steady green.

INTERNET

POWER

REDLINK

M36571A

Fig. 47. RedLINK Internet Gateway connect button.

NOTE: The Internet Gateway must be registered online

before use at www.mytotalconnectcomfort.com. Enter the MAC ID and MAC CRC numbers located on the bottom of the Internet Gateway. For additional information, see instructions provided with the device.

Fig. 49. Wireless indoor sensor connect button and

status light.

NOTE: In normal operation, the status light remains

off. If it begins flashing red, batteries are low (power will be depleted after 2–3 weeks).

2. If you are installing more than 1 wireless indoor sensor, give each sensor a name as you install it. Press Name Device, as shown in Fig. 50.

Fig. 50.

19 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Dealer Informaon

3. Type the sensor name and press Done. The sensor names are used when selecting which sensor to use for temperature, humidification, and dehumidification control.

Fig. 51.

NOTE: If you link more than 1 wireless indoor sen-

sor, and forget to name them, you will be prompted to name each wireless indoor sensor after you exit wireless setup. See Fig. 52.

NOTE: The thermostat can work with up to 6 Vent Boost

remotes.

Finding Your Password (Date Code) to Access Installer Options

You will need the thermostat password to:

• Make changes to the Installer Setup.

•Setup Diagnostics.

• Perform an Installer Test.

• View Data Logs.

• Add, remove, rename or view connected RedLINK accessories.

• Reset the thermostat to Factory Default settings.

The password (Date Code) is located on the back of the thermostat.

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Fig. 52.

Linking Entry/Exit Remote or Vent Boost Remote

1. Press and quickly release the CONNECT button.

Fig. 53. Connect button and status light on Entry/Exit

Remote or Vent Boost Remote.

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Password (Date Code)

M38033

Fig. 54. Finding thermostat password.

The password (Date Code) can also be found by following these steps:

1. Touch Menu.

2. Select Dealer Information.

2. After a short delay, the status light will glow green for

15 seconds. If the status light turns red, the remote did not link with the thermostat for the connection process.

NOTE: The thermostat can work with up to 3 Entry/Exit

remotes. Each Entry/Exit remote can control up to 16 thermostats.

68-0311—08 20

Fig. 55. Finding thermostat password.

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Installer Options

The following options are available when you access Installer Options. For more information on each, press Help on the thermostat or see Table 3.

Fig. 56. Installer Options screen.

Table 3. Installer Options.

Menu Item Description

Create Setup Press CREATE SETUP to set all system

View/Edit Current Setup

Set Up Diagnostics

Installer Test Press INSTALLER TEST to quickly

Data Logs Press DATA LOGS to view the Alerts Log,

Wireless Device Manager

Advanced Options

settings one by one.

Press VIEW/EDIT CURRENT SETUP to select a specific function and make quick changes

Press SET UP DIAGNOSTICS to set up and test Delta T diagnostics.

determine if the heat, cool, fan and thermostat are operating properly. Minimum off timers are ignored during the test

User Interactions Log, and Performance Logs.

Press WIRELESS DEVICE MANAGER to add, remove, rename, or view the connected wireless accessories.

Press ADVANCED OPTIONS to setup the thermostat using a USB device or to restore the thermostat to the factory default settings. NOTE: If the THX9321 has been setup WITHOUT an Equipment Interface Module or the TrueZONE Wireless Adapter and you would like to add one, you must reset the thermostat back to factory defaults.

NOTE: You can use the thermostat USB port to download

all Installer Setup settings, including your company name and contact information. You can upload this data to each thermostat you install, to save time.

Making Changes to Installer Setup

Follow these steps to set system options after initial installation.

NOTE: Use a USB device to save set up time. See “USB

Port” beginning on page 119 for more information.

1. Touch Menu.

2. Select Installer Options.

Installer Opons

Fig. 57.

21 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Done

3. Enter password (Date Code) and touch Done. See “Finding Your Password (Date Code) to Access Installer Options” beginning on page 20 for more information.

Fig. 58.

Table 4. Installer Setup (ISU) Table.

ISU

Number

1000 Language

1010 Application

1020 Zone Number

1030 Device Name

1030 Display on Home

1040 Scheduling Options

1050 Temperature

Installer Setup

Name Settings Default

English Français Español

Residential Commercial

1-16

[Enter Device Name]

Screen

Indication Scale

Yes (select check box)

Non-Programmable Programmable

Fahrenheit Celsius

4. Select Create Setup.

Fig. 59.

5. Follow prompts on the screen to select the desired

setup options. See Table 4 for Installer Setup options.

Residential, Commercial

or Both

Requires

EIM Notes

English Both No

Residential Both No

1 Both No This ISU is only displayed on a thermostat that

is controlling a zone panel through the THM4000 Wireless Adapter.

Thermostat Both No The Portable Comfort Control remote and Web

Interface displays the name of the thermostat that you enter on this screen.

No Commercial No Thermostat location (name) can be displayed

on the home screen. This feature is typically used when multiple thermostat's are mounted in a manager's office or equipment room. This allows you to quickly identify which thermostat is in control of a specific zone or area.

Programmable Both No

Fahrenheit Both No

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 4. Installer Setup (ISU) Table. (Continued)

ISU

Number

Installer Setup

Name Settings Default

1060 Outdoor Air Sensor

2000 Heating System Type

No Yes

Conventional Forced Air Heat Heat Pump Radiant Heat Other None (Cool Only)

Residential,

Commercial

or Both

Requires

EIM Notes

No Both No This ISU automatically defaults to Yes when a

Wireless Outdoor Sensor is connected.

An Outdoor Sensor is required to set the following ISUs: ISU 3120 Outdoor Temperature Lockouts (Compressor Lockout and Backup Heat Lockout) ISU 4050 Outdoor Temperature used with Minimum Heat Recovery Ramp Rate ISU 4060 Outdoor Temperature used with Maximum Heat Recovery Ramp Rate ISU 4070 Outdoor Temperature used with Minimum Cool Recovery Ramp Rate ISU 4080 Outdoor Temperature used with Maximum Cool Recovery Ramp Rate ISU 8050 Humidification - Window Protection ISU 10130 Ventilation Low Temperature Lockout ISU 10130 Ventilation High Temperature Lockout ISU 10130 Ventilation High Dew Point Lockout (requires Wireless Outdoor Sensor) ISU 13070 Allow Heat Delta T Diagnostics when Outdoor Temperature is [Out. Temp. Range] ISU 13080 Allow Heat Delta T Diagnostics when Outdoor Humidity is [Out. Humidity Range] ISU 13110 Allow Backup Heat Delta T Diag. when Outdoor Temperature is [Out. Temp. Range] ISU 13120 Allow Backup Heat Delta T Diagnostics when Outdoor Humidity is [Out. Humidity Range] ISU 13150 Allow Cool Delta T Diagnostics when Outdoor Temperature is [Out. Temp. Range] ISU 13160 Allow Cool Delta T Diagnostics when Outdoor Temperature is [Out. Humidity Range]

Conventional

Both No

Forced Air Heat

23 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 4. Installer Setup (ISU) Table. (Continued)

ISU

Number

Installer Setup

Name Settings Default

2010 Heating Equipment

Type

2030 What Terminals are

Wired to Radiant Heat?

Conventional Forced Air Heat:

Standard Efficiency Gas Forced Air High Efficiency Gas Forced Air Oil Forced Air Electric Forced Air Hot Water Fan Coil Other

Heat Pump:

Air to Air Heat Pump Geothermal Heat Pump Geothermal Radiant Heat

Radiant Heat:

Hot Water Radiant Heat Geothermal Radiant Heat Steam Other

Other:

Gravity Other

None U1 U2 U3

Default varies based on previous selections

Residential, Commercial

or Both

Requires

EIM Notes

Both No Cycle Rate and Fan Operation automatically

default to the correct settings based on the equipment type selected.

This ISU is not displayed when ISU 2000 Heating System Type is set to None (Cool Only).

See “Geothermal Radiant Heat” beginning on page 99.

Both No This ISU is only displayed when ISU 2010

Heating Equipment Type is Geothermal Radiant Heat.

Geothermal Radiant Heat must be wired to a U terminal (U1, U2, or U3).

2040 What Terminals are

Wired to Radiant Heat - Stage 2?

None U1 U2 U3

Default varies based on previous selections

U1, U2 and U3 are normally open dry contacts when configured for a stage of Heat. U1, U2 and U3 require power from the system transformer or a separate transformer.

U3 is only available on the Equipment Interface Module (EIM).

Both No This ISU is only displayed when ISU 2010

Heating Equipment Type is Geothermal Radiant Heat.

Geothermal Radiant Heat must be wired to a U terminal (U1, U2, or U3).

U1, U2 and U3 are normally open dry contacts when configured for a stage of Heat. U1, U2 and U3 require power from the system transformer or a separate transformer.

U3 is only available on the Equipment Interface Module (EIM).

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 4. Installer Setup (ISU) Table. (Continued)

ISU

Number

Installer Setup

Name Settings Default

2050 Geothermal Forced

Air System

2060 Reversing Valve

O/B

2070 Cool Stages /

Compressor Stages

None Used for Cooling Only Used for Heating and Cooling

O (O/B on Cool) B (O/B on Heat)

1-4

Residential,

Used for Heating and Cooling

Commercial

or Both

Both No This thermostat has the capability of

Requires

EIM Notes

controlling Geothermal Radiant Heat, Geothermal Forced Air and Backup Heat.

If this thermostat is not controlling the Geothermal Forced Air System, select None. This setting is typically used if the thermostat is only controlling Geothermal Radiant Heat.

If this thermostat is using the Geothermal Forced Air System for cooling and not for heating, select Used for Cooling Only.

If this thermostat is using the Geothermal Forced Air System for both heating and cooling, select Used for Heating and Cooling.

O/B on Cool Both No Only displayed if the equipment type is Air to

Air Heat Pump, Geothermal Heat Pump or Geothermal Radiant Heat.

1 if ISU 1010 is Residential

Both No Conventional:

Cool Stage 3 and 4 are only available if ISU

1010 is Commercial. 2 if ISU 1010 is Commercial

Cool Stage 3 and 4 must be wired to a U

terminal (U1, U2 or U3).

2020, 2070

Heat Stages / Backup Heat Stages

2080 What Terminals are

Wired to Cool - Stage 3?

1 - 3

None U1 U2 U3

Default is 1 stage if ISU 1010 Application is Residential

Default is 2 stages if ISU 1010 Application is Commercial

Default varies based on previous selections

Heat Pumps:

Maximum of 2 Compressor Stages for heat

pump systems.

Both No Maximum of 3 Heat Stages for conventional

systems.

Maximum of 2 Backup Heat Stages for systems

with more than 1 heating equipment type.

Commercial No Cool Stage 3 is only available if ISU 1010 is

Commercial.

Cool Stage 3 must be wired to a U terminal (U1,

U2 or U3).

U1, U2 and U3 are normally open dry contacts

when configured for a stage of Cool. U1, U2

and U3 require power from a system

transformer or a separate transformer.

U3 is only available on the Equipment Interface

Module (EIM).

25 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 4. Installer Setup (ISU) Table. (Continued)

ISU

Number

Installer Setup

Name Settings Default

2090 What Terminals are

Wired to Cool - Stage 4?

2100 What Terminals are

Wired to Heat - Stage 3?

2110 Fan Operation in

Heat

None U1 U2 U3

No Fan Equipment Controls Fan Thermostat Controls Fan

Default varies based on previous selections

Thermostat Controls Fan

Residential, Commercial

or Both

Requires

EIM Notes

Commercial No Cool Stage 4 is only available if ISU 1010 is

Commercial.

Cool Stage 4 must be wired to a U terminal (U1, U2 or U3).

U1, U2 and U3 are normally open dry contacts when configured for a stage of Cool. U1, U2 and U3 require power from a system transformer or a separate transformer.

U3 is only available on the Equipment Interface Module (EIM).

Both No THX9321 Thermostat Only:

This ISU is only displayed on the THX9321 thermostat when it is wired directly to the equipment (Equipment Interface Module is NOT used).

Heat Stage 3 must be wired to a U terminal (U1 or U2).

U1 and U2 are normally open dry contacts when configured for a stage of Heat. U1 and U2 require power from a system transformer or a separate transformer.

Both No This ISU is only displayed when ISU 2010

Heating Equipment Type is Electric Forced Air, Hot Water Fan Coil or Other.

The thermostat automatically defaults to Equipment Controls Fan when ISU 2010 Heating Equipment Type is Standard Efficiency Gas Forced Air, High Efficiency Gas Forced Air or Oil Forced Air.

2120 Backup Heat Type

68-0311—08 26

None Standard Efficiency Gas Forced Air High Efficiency Gas Forced Air Oil Forced Air Electric Forced Air Hot Water Fan Coil Hot Water Radiant Heat Other

None Both No This ISU is only displayed when ISU 2010

No Fan is only displayed when ISU 2010 Heating Equipment Type is Other.

Heating Equipment Type is Hot Water Radiant Heat, Steam, Hot Water Fan Coil, Electric Forced Air or Other.

The list of Backup Heat Types will vary based on the type of primary heat selected at ISU 2010 Heating Equipment Type.

When ISU 2010 Heating Equipment Type is Hot Water Radiant Heat, the thermostat keeps the Hot Water Radiant Heat on when it calls for Backup Heat.

When ISU 2010 Heating Equipment Type is Steam, the thermostat keeps the Steam Heat on when it calls for Backup Heat.

When ISU 2010 Heating Equipment Type is Hot Water Fan Coil, Electric Forced Air or Other, you can select how the backup operates. See ISU 2150 Backup Heat Operation.

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 4. Installer Setup (ISU) Table. (Continued)

ISU

Number

Installer Setup

Name Settings Default

2130 Backup Heat Stages

2140 What Terminals are

Wired to Backup Heat?

2150 Backup Heat

Operation

0 - 2

None U1 U2

NOT Allowed to Run with Primary Heat

Allowed to Run with Primary Heat

Residential, Commercial

or Both

Requires

EIM Notes

1 Both No This ISU is only displayed when a backup heat

source is selected at ISU 2120 Backup Heat

Type .

Maximum of 2 Backup Heat stages.

Default varies based on previous selections

Both No THX9321 Thermostat Only:

This ISU is only displayed on the THX9321

thermostat when it is wired directly to the

equipment (Equipment Interface Module is

NOT used).

The thermostat can support up to 3

conventional heat stages. When there are a

total of 3 conventional heat stages, the last

stage of heat must be wired to U1 or U2.

U1 and U2 are normally open dry contacts

when configured for a stage of Heat. U1 and U2

require power from a system transformer or a

separate transformer.

NOT allowed to run with Primary Heat

Both No This ISU is only displayed when ISU 2010

Heating Equipment Type is Hot Water Fan Coil,

Electric Forced Air or Other.

When ISU 2010 Heating Equipment Type is

Hot Water Fan Coil, Electric Forced Air or Other,

you can select how the Backup Heat operates.

The thermostat can be setup to keep the

primary heat source on when it calls for Backup

Heat or the thermostat can be setup to turn off

the primary heat source when it calls for

Backup Heat.

2160 Backup Heat Fan

Operation

No Fan Equipment Controls Fan Thermostat Controls Fan

Thermostat Controls Fan

When ISU 2010 Heating Equipment Type is

Hot Water Radiant Heat, the thermostat keeps

the Hot Water Radiant Heat on when it calls for

Backup Heat.

When ISU 2010 Heating Equipment Type is

Steam, the thermostat keeps the Steam Heat on

when it calls for Backup Heat.

Both No This ISU is only displayed for conventional

systems when ISU 2120 Backup Heat Type is

Electric Forced Air, Hot Water Fan Coil or Other.

Backup Heat Fan Operation automatically

defaults to Equipment Controls Fan when ISU

2120 Backup Heat Type is Standard Efficiency

Gas Forced Air, High Efficiency Gas Forced Air

or Oil Forced Air.

No Fan is only displayed when ISU 2120

Backup Heat Type is Other.

27 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 4. Installer Setup (ISU) Table. (Continued)

ISU

Number

Installer Setup

Name Settings Default

2170 What Terminals are

Wired to Backup Heat - Stage 2?

2180 Backup Heat Type

2190 External Fossil Fuel

Kit

2200 Backup Heat

Operation

None U1 U2

Electric Forced Air Standard Efficiency Gas Forced Air High Efficiency Gas Forced Air Oil Forced Air Hot Water Fan Coil Hot Water Radiant Heat Other

Thermostat Controls Backup Heat External Fossil Fuel Kit Controls

Backup Heat

NOT allowed to Run with Heat Pump

Allowed to Run with Heat Pump

Default varies based on previous selections

Electric Forced Air

Thermostat Controls Backup Heat

Default varies based on previous selections

Residential, Commercial

or Both

Requires

EIM Notes

Both No THX9321 Thermostat Only:

This ISU is only displayed on the THX9321 thermostat when it is wired directly to the equipment (Equipment Interface Module is NOT used).

The thermostat can support up to 2 backup heat stages for heat pump applications. When there are 2 backup heat stages, backup heat stage 2 must be wired to U1 or U2.

U1 and U2 are normally open dry contacts when configured for a stage of Heat. U1 and U2 require power from a system transformer or a separate transformer.

Both No This ISU is only displayed when ISU 2010

Heating Equipment Type is Air to Air Heat Pump, Geothermal Heat Pump or Geothermal Radiant Heat and there is at least one stage of backup heat.

See “Heat Pump and Backup Heat Operation” beginning on page 98.

Both No This ISU is only displayed when ISU 2010

Heating Equipment Type is Air to Air Heat Pump, Geothermal Heat Pump or Geothermal Radiant Heat and ISU 2180 Backup Heat Type is Standard Efficiency Gas Forced Air, High Efficiency Gas Forced Air or Oil Forced Air.

Both No This ISU is only displayed when ISU 2010

Heating Equipment Type is Air to Air Heat Pump, Geothermal Heat Pump or Geothermal Radiant Heat and ISU 2180 Backup Heat Type is Hot Water Fan Coil or Other.

2210 Backup Heat Fan

Operation

68-0311—08 28

No Fan Equipment Controls Fan Thermostat Controls Fan

Default varies based on previous selections

Not Allowed to Run with Heat Pump: The thermostat turns off the heat pump when it calls for backup heat.

Allowed to Run with Heat Pump: The thermostat keeps the heat pump on when it calls for backup heat.

Both No This ISU is only displayed for heat pumps when

ISU 2180 Backup Heat Type is Other.

Backup Heat Fan Operation: Electric Forced Air: Thermostat Controls Fan

Standard Efficiency Gas Forced Air: Equipment Controls Fan

High Efficiency Gas Forced Air: Equipment Controls Fan

Oil Forced Air: Equipment Controls Fan

Hot Water Fan Coil: Thermostat Controls Fan

Hot Water Radiant Heat: Not Applicable

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 4. Installer Setup (ISU) Table. (Continued)

ISU

Number

Installer Setup

Name Settings Default

2220 A-L/A Terminal

Setup

None Time Of Day Economizer Heat Pump Failure Indication

Residential, Commercial

or Both

Requires

EIM Notes

None Commercial No This ISU is only displayed when ISU 1010

Application is Commercial.

Note: When the thermostat is setup for

Residential, the L/A terminal operates as

described under “Heat Pump Failure

Indication.” The L/A terminal requires no setup

for residential applications.

None: The A-L/A terminal is not used.

Time of Day: The A-L/A terminal is energized

during Occupied periods and when the user

overrides the temperature. The terminal is de-

energized during Unoccupied periods and in

Standby mode.

Economizer: The thermostat controls an

economizer module to provide ventilation

during Occupied periods and free cooling when

outdoor conditions are favorable. The A-L/A

terminal is energized during Occupied periods

and during a call for cooling in Unoccupied

periods. See “Economizer and Time of Day

(TOD) Operation” beginning on page 126.

Notes: The economizer module determines

when outdoor conditions are favorable for free

cooling. Delta T Diagnostics is not available

when the thermostat is setup for an

Economizer. If an economizer fault alert is

required, see Fig. 355 on page 152.

3000 Changeover

Manual Automatic

Manual: if ISU 1010 is Residential

Automatic: if ISU 1010 is Commercial

Heat Pump Failure Indication: When 24 volts is

detected on the L/A terminal (compressor

monitor), the thermostat displays a message to

alert the user when the heat pump requires

service. The L/A terminal sends a continuous

output to a zone panel when the thermostat is

set to Emergency Heat mode. The zone panel

will not turn on the heat pump when a zone is

set to Emergency Heat mode.

Both No Manual: The user must select heating or

cooling as needed to maintain the desired

indoor temperature.

Automatic: The user has the option to select

Auto for the system setting. In Auto mode, the

thermostat controls heating and cooling

equipment as needed to maintain the desired

indoor temperature.

29 68-0311—08

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 4. Installer Setup (ISU) Table. (Continued)

ISU

Number

Installer Setup

Name Settings Default

3000 Deadband

3010 Temperature Control

Options

2° F to 9° F (in 1° F increments)

Basic Options Advanced Options Advanced Options + PID Settings

Residential, Commercial

or Both

Requires

EIM Notes

3° F Both No This ISU is only displayed when ISU 3000 is set

to Automatic.

Deadband is the minimum separation between heat and cool settings when the thermostat is setup for Auto Changeover. For example, if the deadband is set to 3° F and the cool setpoint is 75° F, the warmest heat setpoint allowed would be 72° F. If the heat setpoint is adjusted above 72° F, it will automatically adjust the cooling setpoint higher to maintain the 3° F deadband.

When ISU 9070 (Dehumidification - Over Cooling Limit) or ISU 9100 (High Humidity Comfort Reset Setting) is set to 1, 2, 3, 4 or 5° F, the thermostat will not show the full Deadband range. For example, if you set a Deadband of 3° F and an Over Cooling Limit of 2° F, the minimum Deadband that you can select will be 5 F. This prevents the heating system from turning on when the thermostat over cools to reach the dehumidification setting.

Basic Options Both No 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.

3020 Finish With High

Cool Stage

No Yes

Advanced Options: The Installer Setup displays both Basic and Advanced Options. Advanced temperature control options include Finish With High Cool Stage, Finish With High Heat Stage, Temperature Differential settings between all stages and Cycle Rate settings per stage.

Advanced Options+PID Settings: The Installer Setup displays both Basic and Advanced Options including PID settings which allow you to adjust the integral, derivative and throttling range.

No Both No ISU 3010 Temperature Control Options must

be set to Advanced to view or adjust Finish With High Cool Stage.

This ISU is only displayed when the thermostat is set for 2 or more cool stages.

When set to Yes, this feature keeps the high stage of the cooling equipment running until the desired setpoint is reached.

68-0311—08 30

+ 130 hidden pages

Honeywell Home THX9321 Prestige 2.0, THX9421R5021WW, THX9421 Prestige IAQ with EIM, THX9421R5021SG, THX9421R5021WG User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

APPLICATION

FEATURES

CONTENTS

SPECIFICATIONS

SYSTEM INSTALLATION

When Installing this Product...

Finding Your Password (Date Code)

INSTALLATION OPTIONS

Guidelines for Installing RedLINK Devices

Installing Equipment Interface Module (if used)

Wiring 24 Vac Common

Selecting Discharge and Return Air Temperature Sensor Mounting Locations

Selecting Return Air Temperature Sensor Mounting Location

Selecting Thermostat Location

Installing Discharge and Return Air Temperature Sensors

Installing Wallplate

POWER OPTIONAL REDLINK™ ACCESSORIES

PERFORMING INITIAL SETUP

Linking Thermostat to Equipment Interface Module (if used)

Linking RedLINK™ Accessories

Completing Initial Setup

Adding RedLINK Accessories to the Thermostat

Locating the Connect Buttons on RedLINK Accessories

Finding Your Password (Date Code) to Access Installer Options

Installer Options

Making Changes to Installer Setup