Honeywell THX9321 Prestige, THX9421 Prestige Product Information Sheet

Page 1

THX9321 Prestige® 2.0 and

THX9321 Prestige® 2.0

THX9421 Prestige® IAQ with EIM

• 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.

• Universal 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.

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

• 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.

• 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

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Page 2

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

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

Ordering Information ........................... 2

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

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

Installing Equipment Interface Module (if used)

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

Selecting Discharge and Return Air Temperature

Sensor Mounting Locations ......................... 10

Selecting Discharge and Return Air Temperature Sensor

Mounting Locations .............................................. 10

Selecting Return Air Temperature Sensor Mounting Loca-

tion ....................................................................... 11

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

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

Power Optional REDLINK™ Accessories ... 14 Linking Thermostat to Equipment Interface Mod-

ule (if used) .................................................... 15

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

Mounting Optional Accessories .................. 70

Alerts and Diagnostics ....................... 87

Delta T Diagnostics ....................................... 87

Before You Set Up Delta T Diagnostics ....... 87

Setting up Alerts and Diagnostics ............... 88

Delta T Alerts ................................................. 90

Delta T Alerts and Utility Saver Switches ... 91

Data Logs ....................................................... 91

Alerts Log ............................................................. 92

User Interactions Log ........................................... 93

Dry Contact Alerts ........................................ 95

Installer Tests ...................................... 68

Using the Equipment Test ............................ 69

Using the Wireless Signal Strength Test .... 69

Indoor Air Quality (IAQ) Control ......... 102

Humidification ............................................... 102

Set up Humidification ........................................... 102

Control Humidification Level ................................ 104

Dehumidification - Residential ..................... 105

Set up Dehumidification With Cooling System ..... 105

Set up Dehumidification With Whole House Dehumidifier

106

Set up Dehumidification Away Mode .................... 108

Control Dehumidification Level ............................. 108

Dehumidification - Commercial ................... 109

Set up Dehumidification With Cooling System ..... 109

Set up Dehumidification With Dehumidifier .......... 110

Control Dehumidification Level ............................. 112

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

Set up Ventilation ................................................. 113

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

Customizable Reminders ................... 116

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

Heat Pump and Backup Heat Operation

100

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

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

Commercial Features .......................... 121

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

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

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

Economizer and Time of Day (TOD) Operation

126

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

Staging Control ............................................. 97

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

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

Wiring ................................................... 135

EIM Wiring Diagrams .................................... 138

Geothermal Radiant Heat ............................. 100

THX9321 Thermostat Wiring Diagrams ....... 141

THX9321 Thermostat Wiring Diagrams Using Universal Relays to Control Heating or Cooling 142 Wiring IAQ Equipment or a Heat/Cool Stage to the

Universal Terminals ...................................... 149

Economizer Module Wiring Diagrams ......... 151

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

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

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

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number. If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1. Your local Honeywell Environmental and Combustion Controls Sales Office (check white pages of your phone directory).

2. Honeywell Customer Care

1885 Douglas Drive North Minneapolis, Minnesota 55422-4386

3. http://customer.honeywell.com or http://customer.honeywell.ca International Sales and Service Offices in all principal cities of the world. Manufacturing in Belgium, Canada, China, Czech Republic, Germany, Hungary, Italy, Mexico, Netherlands, United Kingdom, and United States.

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Page 3

SPECIFICATIONS

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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 selectable

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.

Ter minal

W - O/B 18 to 30 VAC and

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, U1 U2, U2 U3, U3

• Gas, oil or electric heat with air conditioning

• Warm air, hot water, high-efficiency furnaces, heat pumps, steam and gravity

• Cool only

Volt ag e

(50/60 Hz)

750 mVDC

18 to 30 VAC 0.50A

Max. Current

Rating

1.00A

RedLINK Communication:

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

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)

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 2.0 displays “Cool On” when the

thermostat turns the cooling on.

Heat Indication:

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

thermostat turns the heating on.

Auxiliary Heat Indication:

Prestige 2.0 and Prestige IAQ 2.0 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 ther-

mostat stages the equipment based on how far the indoor temperature is from the setpoint (ISU 3030 to 3090). See page 31 for more information.

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

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 equip-

ment or on a wall in the equipment room.

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Page 4

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

M34630

3-5/16 (84)

3-1/2

(89)

4-1/2 (115)

7/8

(22)

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)

7-29/32 (201)

3-19/64 (84)

5-1/2 (140)

M33330

Fig. 1. Dimensions of THX9421 Prestige IAQ thermostat in

in. (mm).

Fig. 2. Dimensions of THX9421 Prestige IAQ cover plates

in in. (mm).

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).

in. (mm).

Fig. 3. Dimensions of THX9321 Prestige

68-0311—03 4

2.0 thermostat in

Page 5

Kit

Part Number

Prestige IAQ Kit

YTHX9421R5101WW

Prestige IAQ Kit

YTHX9421R5101BB

Prestige IAQ Kit

YTHX9421R5101SG

Prestige IAQ Kit

YTHX9421R5101WG

Prestige IAQ Kit

YTHX9421R5085WW

Prestige IAQ Kit YTHX9421R5085BB

Prestige IAQ Kit YTHX9421R5085SG

Prestige IAQ Kit YTHX9421R5085WG

Prestige 2.0 Kit YTHX9321R5061

Prestige 2.0 Kit YTHX9321R5079

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Table 1. Prestige Kits.

Included in Kit

Part Number Description

THX9421R5021WW Thermostat - White Front, White Side THM5421R1021 Equipment Interface Module C7089R1013 Wireless Outdoor Sensor 50062329-001 Discharge/Return Sensors (Qty. 2) THX9421R5021BB Thermostat - Black Front, Black Side THM5421R1021 Equipment Interface Module C7089R1013 Wireless Outdoor Sensor 50062329-001 Discharge/Return Sensors (Qty. 2) THX9421R5021SG Thermostat - Silver Front, Gray Side THM5421R1021 Equipment Interface Module C7089R1013 Wireless Outdoor Sensor 50062329-001 Discharge/Return Sensors (Qty. 2) THX9421R5021WG Thermostat - White Front, Gray Side THM5421R1021 Equipment Interface Module C7089R1013 Wireless Outdoor Sensor 50062329-001 Discharge/Return Sensors (Qty. 2) THX9421R5021WW Thermostat - White Front, White Side THM5421R1021 Equipment Interface Module 50062329-001 Discharge/Return Sensors (Qty. 2) THX9421R5021BB Thermostat - Black Front, Black Side THM5421R1021 Equipment Interface Module 50062329-001 Discharge/Return Sensors (Qty. 2) THX9421R5021SG Thermostat - Silver Front, Gray Side THM5421R1021 Equipment Interface Module 50062329-001 Discharge/Return Sensors (Qty. 2) THX9421R5021WG Thermostat - White Front, Gray Side THM5421R1021 Equipment Interface Module 50062329-001 Discharge/Return Sensors (Qty. 2) THX9321R5030 Thermostat REM5000R1001 Portable Comfort Control C7089R1013 Wireless Outdoor Sensor THX9321R5030 Thermostat C7089R1013 Wireless Outdoor Sensor

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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 32 to 120 °F

THX9421R5021SG 32 to 120 °F

THX9421R5021WG 32 to 120 °F

THX9321R5030 32 to 120 °F

Equipment Interface Module

Wireless Adapter (For TrueZONE, TrueSTEAM 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)

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)

YTHM5421R1010* THM5421R1021

THM4000R1000 -40 to 165 °F

THM6000R1002 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

TR21 45 to 99 °F

TR21-A 45 to 99 °F

C7772A1004 45 to 99 °F

C7772A1012 45 to 99 °F

Temperature

(0 to 48.9 °C)

-40 to 165 °F (-40 to 73.9 °C)

(-40 to 73.9 °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)

(7 to 37 °C)

Operating

Relative Humidity

5% to 90% 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

Shipping

Temperature

-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)

-40 to 150 °F (-40 to 65.5 °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 1-19/32 (237 x 123 x 41)

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)

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)

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)

Front-White, Side-White

Front-Black, Side-Black

Front-Silver, Side-Gray

Front-White, Side-Gray

Arctic White

Gray

Black

Arctic White Gray

Arctic White

Gray

Arctic White

Premier White

White

Brushed Stainless Steel

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

Operating

Ambient

Product Part Number

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)

THX9321 Coverplate (covers marks left by old thermostats)

Wire Saver Module THP9045A1023 -40 to 163 °F

C7735A1000* 0 to 200 °F

C7041 - - - - - - 4-3/16 x 2-5/16 x 1-11/16

C7770A1006 45 to 99 °F

WSK-24 Receiver:

THP2400A1027W (Includes 2 cover plates)

THP2400A1027B (Includes 2 cover plates)

THP2400A1027G (Includes 2 cover plates)

50028399-001 - - - - - - 7-29/32 x 5-1/2 (201 x 140) White

Temperature

(- 17.8 to 93.3 °C)

(7 to 37 °C)

- 5 to 140 °F (-21 to 60 °C)

Door Sensor:

-4 to 140 °F (-20 to 60 °C)

PIR Sensor:

-4 to 104 °F (-20 to 40 °C)

- - - - - - Small = 5-33/64 x 4-21/64

(-40 to 73 °C)

Operating

Relative Humidity

- - -20 to 120 °F

5% to 95% Non-Condensing

- - - - Receiver:

5% to 90% Non-Condensing

Shipping

Temperature

(-28.9 to 48.9 °C)

-40 to 150 °F (-40 to 65.5 °C)

-40 to 185 °F (-40 to 85 °C)

Physical Dimensions in in.

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

Cap Diameter: 2-7/16 (62)

(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)

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

- - Gray

(mm) Color(s)

Gray

- -

White

Black

Gray

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

Return Air Sensor part number is C7735A1000.

7 68-0311—03

Page 8

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

1324

Password (Date Code)

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.

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.

Fig. 6. Finding thermostat password.

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.

Dealer Informaon

Fig. 7. Finding thermostat password.

68-0311—03 8

Page 9

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 DIRECTLY TO EQUIPMENT

MCR34631

WIREDDIRECTLY

TOE

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 Equip-

ment 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 equipment

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

— To determine if a RedLINK device will communicate

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—03

Page 10

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 135.

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 90), be sure to consider the affect that the humidifier has on Delta T.

4. If a Bypass Humidifier is installed, mount the Discharge Air Temperature Sensor downstream of the Bypass Humidifier. See Fig. 13–14.

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Page 11

Selecting Return Air Temperature

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

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

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. 10.

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—03

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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

1324

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.

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

Installing Wallplate

Fig. 16. Selecting thermostat location.

the thermostat.

68-0311—03 12

Fig. 15. Mounting Discharge/Return Air Sensor.

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.

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.

Page 13

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

MCR34688

1324

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” begin-

ning on page 141.

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.

NOTE: When the THX9321 thermostat is used with a

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

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.

Fig. 20. Inserting wires in thermostat terminal screws

(THX9421).

13 68-0311—03

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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 accesso-

ries.

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 controlled

by a wall switch.

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

M32940

Fig. 25.

68-0311—03 14

Page 15

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

THM4000R1000

TrueSTEAM

MCR31476

543

OFF

CONNECT

CONNECTED

TrueSTEAM

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.

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

MCR33269

battery.

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

is not good.

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—03

Page 16

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 Con-

nect 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 thermo-

stat 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—03 16

Page 17

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 “Find-

ing 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—03

Page 18

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 thermostat

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 dis-

play 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—03 18

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

Page 19

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

MCR32943

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.

Fig. 46. Restarting the linking process.

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

MCRXXXXX

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.

RedLINK Internet Gateway

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

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

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—03

Page 20

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

1324

Password (Date Code)

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 sensor,

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.

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

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

68-0311—03 20

Remote or Vent Boost Remote.

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

Fig. 54. Finding thermostat password.

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

1. Touch Menu.

2. Select Dealer Information.

Fig. 55. Finding thermostat password.

Page 21

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.

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.

3. Enter password (Date Code) and touch Done. See “Find-

ing Your Password (Date Code) to Access Installer Options” beginning on page 20 for more information.

Menu Item Description

Create Setup Press CREATE SETUP to set all system

settings one by one.

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

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.

Done

Fig. 58.

4. Select Create Setup.

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.

Fig. 59.

5. Follow prompts on the screen to select the desired setup

options. See Table 4 for Installer Setup options.

21 68-0311—03

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

English Both No

Residential Both No

1 Both No This ISU is only displayed on a thermostat

Thermostat Both No The Portable Comfort Control remote and

No Commercial No Thermostat location (name) can be

Programmable Both No

Fahrenheit Both No

Residential, Commercial

or Both

Requires

EIM Notes

that is controlling a zone panel through the THM4000 Wireless Adapter.

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

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.

68-0311—03 22

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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—03

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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

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 100.

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 universal 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 universal 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).

68-0311—03 24

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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

universal 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 universal

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—03

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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

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 universal 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 universal 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—03 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.

Page 27

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—03

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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

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 100.

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.

68-0311—03 28

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.

Page 29

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

ISU

Number

Installer Setup

Name Settings Default

2210 Backup Heat Fan

Operation

2220 A-L/A Terminal

Setup

No Fan Equipment Controls Fan Thermostat Controls Fan

None Time Of Day Economizer Heat Pump Failure Indication

Residential,

Default varies based on

Commercial

or Both

Both No This ISU is only displayed for heat pumps

Requires

EIM Notes

when ISU 2180 Backup Heat Type is Other. previous selections

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

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.

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.

29 68-0311—03

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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

3000 Changeover

3000 Deadband

3010 Temperature

Control Options

Manual Automatic

2° F to 9° F (in 1° F increments)

Basic Options Advanced Options Advanced Options + PID Settings

Residential,

Manual:

if ISU 1010 is Residential

Automatic:

if ISU 1010 is Commercial

Commercial

or Both

Both No Manual: The user must select heating or

Requires

EIM Notes

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.

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.

68-0311—03 30

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.

Page 31

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

ISU

Number

Installer Setup

Name Settings Default

3020 Finish With High

Cool Stage

3021 Finish With High

Heat Stage

3030 Staging Control -

Cool Differential Stage 2

No Yes

Comfort

1.0° F to 3.5° F from setpoint (in

0.5° F increments)

Residential, Commercial

or Both

Requires

EIM Notes

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.

No Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

Finish With High Heat Stage.

This ISU is only displayed when the

thermostat is set for 2 or more heat stages.

When set to Yes, this feature keeps the

high stage of the heating equipment

running until the desired setpoint is

reached.

Comfort Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

this ISU.

3030 Staging Control -

Cool Differential Stage 3

Comfort

1.0°F - 4.0°F from setpoint (in

0.5° F increments)

This ISU is only displayed when the

thermostat is set to 2 cool stages.

The indoor temperature must rise to the

selected differential setting before the

thermostat turns on the stage of cooling.

For example, if stage 2 is set to 2° F (1.0°

C), the indoor temperature must be 2° F

(1.0° C) away from the setpoint before

stage 2 turns on. When set to Comfort, the

thermostat uses the stage of cooling as

needed to keep the indoor temperature

within 1° F (0.5° C) degree of the setpoint.

Comfort Commercial No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

this ISU.

This ISU is only displayed when the

thermostat is set to 3 cool stages.

The indoor temperature must rise to the

selected differential setting before the

thermostat turns on the stage of cooling.

For example, if stage 3 is set to 2° F (1.0°

C), the indoor temperature must be 2° F

(1.0° C) away from the setpoint before

stage 3 turns on. When set to Comfort, the

thermostat uses the stage of cooling as

needed to keep the indoor temperature

within 1° F (0.5° C) degree of the setpoint.

31 68-0311—03

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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

3030 Staging Control -

Cool Differential Stage 4

3040 Staging Control -

Radiant Heat Differential Stage 2

Comfort

1.0° F to 4.5° F from setpoint (in

0.5° F increments)

Comfort

1.0° F to 3.5° F from setpoint (in

0.5° F increments)

Residential, Commercial

or Both

Requires

EIM Notes

Comfort Commercial No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust this ISU.

This ISU is only displayed when the thermostat is set to 4 cool stages.

The indoor temperature must rise to the selected differential setting before the thermostat turns on the stage of cooling. For example, if stage 4 is set to 2° F (1.0° C), the indoor temperature must be 2° F (1.0° C) away from the setpoint before stage 4 turns on. When set to Comfort, the thermostat uses the stage of cooling as needed to keep the indoor temperature within 1° F (0.5° C) degree of the setpoint.

Comfort Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust this ISU.

This ISU is only displayed if ISU 2010 Heating Equipment Type is Geothermal Radiant Heat and there are 2 radiant heat stages.

3050 Staging Control -

Heat Differential Stage 2

Note: Depending on the application, the text displayed on the screen may show the specific heating equipment type

Comfort

1.0° F to 3.5° F from setpoint (in

0.5° F increments)

The indoor temperature must drop to the selected differential setting before the thermostat will turn on the stage of heating. For example, if stage 2 is set to 2° F (1.0° C), the indoor temperature must be 2° F (1.0° C) away from the setpoint before stage 2 turns on. When set to Comfort, the thermostat will use the stage of heating as needed to keep the indoor temperature within 1° F (0.5° C) degree of the setpoint.

Comfort Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust this ISU.

This ISU is only displayed for conventional systems that have 2 heat stages.

68-0311—03 32

Page 33

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

ISU

Number

Installer Setup

Name Settings Default

3050 Staging Control -

Heat Differential Stage 3

Note: Depending on the application, the text displayed on the screen may show the specific heating equipment type

3060 Staging Control -

Compressor Heat Differential Stage 1

Comfort

1.0° F to 4.0° F from setpoint (in

0.5° F increments)

Comfort

1.0° F to 4.0° F from setpoint (in

0.5° F increments)

Residential, Commercial

or Both

Requires

EIM Notes

Comfort Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

this ISU.

This ISU is only displayed for conventional

systems that have 3 heat stages.

The indoor temperature must drop to the

selected differential setting before the

thermostat will turn on the stage of

heating. For example, if stage 3 is set to 2°

F (1.0° C), the indoor temperature must be

2° F (1.0° C) away from the setpoint before

stage 3 turns on. When set to Comfort, the

thermostat will use the stage of heating as

needed to keep the indoor temperature

within 1° F (0.5° C) degree of the setpoint.

Comfort Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

this ISU.

This ISU is only displayed if ISU 2010

Heating Equipment Type is Geothermal

Radiant Heat and ISU 2050 Geothermal

Forced Air System is set to Used for

Heating and Cooling.

3060 Staging Control -

Compressor Heat Differential Stage 2

Comfort

1.0° F to 4.5° F from setpoint (in

0.5° F increments)

The indoor temperature must drop to the

selected differential setting before the

thermostat will turn on the stage of

heating. For example, if stage 1 is set to 2°

F (1.0° C), the indoor temperature must be

2° F (1.0° C) away from the setpoint before

stage 1 turns on. When set to Comfort, the

thermostat will use the stage of heating as

needed to keep the indoor temperature

within 1° F (0.5° C) degree of the setpoint.

Comfort Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

this ISU.

This ISU is only displayed if ISU 2010

Heating Equipment Type is Air to Air Heat

Pump, Geothermal Heat Pump or

Geothermal Radiant Heat and there are 2

compressor stages.

The indoor temperature must drop to the

selected differential setting before the

thermostat will turn on the stage of

heating. For example, if stage 2 is set to 2°

F (1.0° C), the indoor temperature must be

2° F (1.0° C) away from the setpoint before

stage 2 turns on. When set to Comfort, the

thermostat will use the stage of heating as

needed to keep the indoor temperature

within 1° F (0.5° C) degree of the setpoint.

33 68-0311—03

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

ISU

Number

3080, 3090

Installer Setup

Name Settings Default

Staging Control Backup Heat Differential Stage 1

Note: “Stage 1" is not displayed if there is only 1 stage of Backup Heat.

3080, 3090

Staging Control Backup Heat Differential Stage 2

3110 Backup Heat

Upstage Timer

Comfort

2.0° F to 15.0° F from setpoint (in

0.5° F increments)

Comfort

2.0° F to 15.5° F from setpoint (in

0.5° F increments)

Off (30, 45, 60, 75, 90) minutes (2, 3, 4, 5, 6, 8, 10, 12, 14, 16)

hours

Residential, Commercial

or Both

Requires

EIM Notes

Comfort Both No A backup heat differential can be set on any

system that has more than one heating equipment type.

See “Backup Heat Differential (Droop)” beginning on page 98.

The Comfort setting is only available on systems when the Backup Heat Type is Allowed to Run with the Primary Heat (Heat Pump). For example, Heat Pumps with Electric Forced Air Backup Heat.

The Comfort setting is NOT available for Dual Fuel systems. For example, Heat Pumps with Gas Forced Air.

Comfort Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

Backup Heat Differential Stage 2.

This ISU is only displayed if there are 2 backup heat stages.

The indoor temperature must drop to the selected differential setting before the thermostat will turn on backup heat stage

2. For example, if backup heat stage 2 is set to 2° F (1.0° C), the indoor temperature must be 2° F (1.0° C) away from the setpoint before backup heat stage 2 turns on. When set to Comfort, the thermostat will use backup heat stage 2 as needed to keep the indoor temperature within 1° F (0.5° C) degree of the setpoint.

Off Both No The Backup Heat Upstage Timer starts

when the highest stage of the previous heating equipment type turns on. Backup heat will be used (if needed) when the timer expires. See “Backup Heat Upstage Timer” beginning on page 99.

68-0311—03 34

This ISU is only displayed when Backup Heat Differential Stage 1 is set to 2 F or higher (ISU 3080, 3090).

Page 35

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

ISU

Installer Setup

Number

3120 Outdoor

Temperature Lockouts:

Compressor Lockout / Balance Point

3120 Outdoor

Temperature Lockouts:

Name Settings Default

Off 5° F to 60° F (in 5° F increments)

Off

(See Notes)

Off 5° F to 65° F (in 5° F increments)

Off Both No ISU 3120 Backup Heat Outdoor

Residential, Commercial

or Both

Requires

EIM Notes

Both No ISU 3120 Compressor Lockout / Balance

Point requires an outdoor sensor.

Default is 40 F if ISU 2010 Heating

Equipment Type is Air to Air Heat Pump

and ISU 2180 Backup Type is gas or oil

forced air.

Default is Off if ISU 2010 Heating

Equipment Type is Air to Air Heat Pump

and ISU 2180 Backup Type is electric

forced air.

Default is Off if ISU 2010 Heating

Equipment Type is Geothermal Heat Pump

or Geothermal Radiant Heat.

Compressor Lockout / Balance Point is

optional for any type of heat pump (Air to

Air Heat Pump, Geothermal Heat Pump or

Geothermal Radiant Heat).

See “Heat pump with outdoor temperature

lockouts” beginning on page 100.

Temperature Lockout requires an outdoor

sensor.

Backup Heat Lockout

3130 Radiant Heat

Cycles Per Hour Stage 1

Note: “Stage 1" is not displayed if there is only 1 stage of Radiant Heat.

1 to 12 CPH

This ISU is only displayed if ISU 2010

Heating Equipment Type is Air to Air Heat

Pump, Geothermal Heat Pump or

Geothermal Radiant Heat and ISU 2190

External fossil fuel kit is set to Thermostat

Controls Backup Heat.

See “Heat pump with outdoor temperature

lockouts” beginning on page 100.

3 Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

cycle rate.

This ISU is only displayed when ISU 2010

Heating Equipment Type is Geothermal

Radiant Heat.

The thermostat automatically defaults to

the recommended setting for Geothermal

Radiant Heat (3 CPH).

Cycle rate limits the maximum number of

times the system can cycle in a 1 hour

period measured at a 50% load. For

example, when set to 3 CPH, at a 50% load,

the most the system will cycle is 3 times

per hour (10 minutes on, 10 minutes off).

The system cycles less often when load

conditions are less than or greater than a

50% load.

35 68-0311—03

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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

3130 Radiant Heat

Cycles Per Hour Stage 2

3140 Cool / Compressor

Cycles Per Hour Stage 1

Note: “Stage 1" is not displayed if there is only 1 stage.

3140 Cool / Compressor

Cycles Per Hour Stage 2

1 to 12 CPH

1 to 6 CPH

Residential, Commercial

or Both

Requires

EIM Notes

3 Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust cycle rate.

This ISU is only displayed when ISU 2010 Heating Equipment Type is Geothermal Radiant Heat.

The thermostat automatically defaults to the recommended setting for Geothermal Radiant Heat (3 CPH).

3 Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust cycle rate.

This ISU is only displayed when ISU 2070 Cool / Compressor Stages is set to 1 stage.

3 Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust cycle rate.

68-0311—03 36

This ISU is only displayed when ISU 2070 Cool / Compressor Stages is set to 2 stages.

Page 37

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

ISU

Number

Installer Setup

Name Settings Default

3140 Cool Cycles Per

Hour - Stage 3

3140 Cool Cycles Per

Hour - Stage 4

1 to 6 CPH

Residential, Commercial

or Both

Requires

EIM Notes

3 Commercial No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

cycle rate.

This ISU is only displayed when ISU 1010

Application is set to Commercial and ISU

2070 Cool Stages is set to 3 stages.

Cycle rate limits the maximum number of

times the system can cycle in a 1 hour

period measured at a 50% load. For

example, when set to 3 CPH, at a 50% load,

the most the system will cycle is 3 times

per hour (10 minutes on, 10 minutes off).

The system cycles less often when load

conditions are less than or greater than a

50% load.

3 Commercial No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

cycle rate.

This ISU is only displayed when ISU 1010

Application is set to Commercial and ISU

2070 Cool Stages is set to 4 stages.

Cycle rate limits the maximum number of

times the system can cycle in a 1 hour

period measured at a 50% load. For

example, when set to 3 CPH, at a 50% load,

the most the system will cycle is 3 times

per hour (10 minutes on, 10 minutes off).

The system cycles less often when load

conditions are less than or greater than a

50% load.

37 68-0311—03

Page 38

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

ISU

Number

Installer Setup

Name Settings Default

3150 Heat Cycles Per

Hour - Stage 1

Note: Depending on the application, the text displayed on the screen may show the specific heating equipment type. “Stage 1" is not displayed if there is only 1 stage.

3150 Heat Cycles Per

Hour - Stage 2

Note: Depending on the application, the text displayed on the screen may show the specific heating equipment type.

1 to 12 CPH

Default varies based on heating equipment type selected

Residential, Commercial

or Both

Requires

EIM Notes

Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust cycle rate.

This ISU is only displayed when ISU 2070 Heat Stages is set to 1 stage.

Cycle rate limits the maximum number of times the system can cycle in a 1 hour period measured at a 50% load. For example, when set to 3 CPH, at a 50% load, the most the system will cycle is 3 times per hour (10 minutes on, 10 minutes off). The system cycles less often when load conditions are less than or greater than a 50% load. The thermostat automatically defaults to the recommended cycle rate based on the heating equipment type that is used. You can change the cycle rate as needed. Defaults for commonly used systems are shown below.

Standard Efficiency Gas Forced Air = 5 CPH High Efficiency Gas Forced Air = 3 CPH Oil Forced Air = 5 CPH Electric Forced Air = 9 CPH Hot Water Fan Coil = 3 CPH Hot Water Radiant Heat = 3 CPH Geothermal Radiant Heat = 3 CPH Steam = 1 CPH Gravity = 1 CPH

Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust cycle rate.

This ISU is only displayed when ISU 2070 Heat Stages is set to 2 stages. Cycle rate limits the maximum number of times the system can cycle in a 1 hour period measured at a 50% load. For example, when set to 3 CPH, at a 50% load, the most the system will cycle is 3 times per hour (10 minutes on, 10 minutes off). The system cycles less often when load conditions are less than or greater than a 50% load. The thermostat automatically defaults to the recommended cycle rate based on the heating equipment type that is used. You can change the cycle rate as needed. Defaults for commonly used systems are shown below.

68-0311—03 38

Page 39

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

ISU

Number

Installer Setup

Name Settings Default

3150 Heat Cycles Per

Hour - Stage 3

Note: Depending on the application, the text displayed on the screen may show the specific heating equipment type.

3160 Backup Heat Cycles

Per Hour - Stage 1

Note: “Stage 1" is not displayed if there is only 1 stage.

1 to 12 CPH

Default varies based on heating equipment type selected

Residential, Commercial

or Both

Requires

EIM Notes

Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

cycle rate.

This ISU is only displayed when ISU 2070

Heat Stages is set to 3 stages.

Cycle rate limits the maximum number of

times the system can cycle in a 1 hour

period measured at a 50% load. For

example, when set to 3 CPH, at a 50% load,

the most the system will cycle is 3 times

per hour (10 minutes on, 10 minutes off).

The system cycles less often when load

conditions are less than or greater than a

50% load. The thermostat automatically

defaults to the recommended cycle rate

based on the heating equipment type that is

used. You can change the cycle rate as

needed. Defaults for commonly used

systems are shown below.

Standard Efficiency Gas Forced Air = 5 CPH

High Efficiency Gas Forced Air = 3 CPH

Oil Forced Air = 5 CPH

Electric Forced Air = 9 CPH

Hot Water Fan Coil = 3 CPH

Hot Water Radiant Heat = 3 CPH

Geothermal Radiant Heat = 3 CPH

Steam = 1 CPH

Gravity = 1 CPH

Both No ISU 3010 Temperature Control Options

must be set to Advanced to view or adjust

cycle rate.

This ISU is only displayed when ISU 2070

or 2130 Backup Heat Stages is set to 1

stage.

Cycle rate limits the maximum number of

times the system can cycle in a 1 hour

period measured at a 50% load. For

example, when set to 3 CPH, at a 50% load,

the most the system will cycle is 3 times

per hour (10 minutes on, 10 minutes off).

The system cycles less often when load

conditions are less than or greater than a

50% load. The thermostat automatically

defaults to the recommended cycle rate

based on the heating equipment type that is

used. You can change the cycle rate as

needed. Defaults for commonly used

systems are shown below.

Standard Efficiency Gas Forced Air = 5 CPH

High Efficiency Gas Forced Air = 3 CPH

Oil Forced Air = 5 CPH

Electric Forced Air = 9 CPH

Hot Water Fan Coil = 3 CPH

Hot Water Radiant Heat = 3 CPH

Geothermal Radiant Heat = 3 CPH

Steam = 1 CPH

Gravity = 1 CPH

39 68-0311—03

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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

3160 Backup Heat Cycles

Per Hour - Stage 2

3170 Cooling Throttling

Range

3180 Cooling Integral

3190 Cooling Derivative

1 to 12 CPH

1° F to 30° F

0, 100 to 25,000 sec

Residential,

Default varies based on heating

Commercial

or Both

Both No ISU 3010 Temperature Control Options

Requires

EIM Notes

must be set to Advanced to view or adjust

cycle rate. equipment type selected

This ISU is only displayed when ISU 2070

or 2130 Backup Heat Stages is set to 2

stages.

Cycle rate limits the maximum number of

times the system can cycle in a 1 hour

period measured at a 50% load. For

example, when set to 3 CPH, at a 50% load,

the most the system will cycle is 3 times

per hour (10 minutes on, 10 minutes off).

The system cycles less often when load

conditions are less than or greater than a

50% load. The thermostat automatically

defaults to the recommended cycle rate

based on the heating equipment type that is

used. You can change the cycle rate as

needed. Default for commonly used

systems are shown below.

Standard Efficiency Gas Forced Air = 5 CPH

High Efficiency Gas Forced Air = 3 CPH

Oil Forced Air = 5 CPH

Electric Forced Air = 9 CPH

Hot Water Fan Coil = 3 CPH

Hot Water Radiant Heat = 3 CPH

Geothermal Radiant Heat = 3 CPH

Steam = 1 CPH

Gravity = 1 CPH

2° F Commercial No The default Cooling Throttling range is 2° F

(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.

10,000 sec Commercial No The default Cooling Integral is 10,000

seconds which is appropriate for most

applications. Do not change this setting

unless advised to do so by Honeywell

technical support.

The integral controls how much droop is

used.

0 sec Commercial No The default Cooling Derivative is 0 seconds

which is appropriate for most applications.

Do not change this setting unless advised

to do so by Honeywell technical support.

The derivative makes adjustments to the

algorithm for fast acting systems.

68-0311—03 40

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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

3200 Heating Throttling

Range

3210 Heating Integral

3220 Heating Derivative

3240 Minimum

Compressor Off Time

1° F to 30° F

0, 100 to 25,000 sec

Off 1 - 5 minutes

Residential, Commercial

or Both

Requires

EIM Notes

2° F Commercial No The default Heating Throttling Range is 2° F

(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.

10,000 sec Commercial No The default Heating Integral is 10,000

seconds which is appropriate for most applications. Do not change this setting unless advised to do so by Honeywell technical support. The integral controls how much droop is used.

0 sec Commercial No The default Heating Derivative is 0 seconds

which is appropriate for most applications. Do not change this setting unless advised to do so by Honeywell technical support. The derivative makes adjustments to the algorithm for fast acting systems.

5 minutes Both No The thermostat has a built in compressor

protection (minimum off timer) that prevents the compressor from restarting too early after a shutdown. The minimumoff timer is activated after the compressor turns off.

3260 Extended Fan Run

Time in Cool

3260 Extended Fan Run

Time in Heat

4000 Number Of

Schedule Periods

4010 Pre-Occupancy

Purge Duration

0, 30, 60, 90 seconds, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 minutes

2 or 4 periods per day

Off 1 hour 2 hour 3 hour

If there is a call during the minimum-off timer, the thermostat shows “waiting for equipment” in the display.

0 seconds Both No After the call for cooling ends, the

thermostat keeps the fan on for the selected amount of time for increased efficiency. This may re-introduce humidity into the living space.

0 seconds Both No After the call for heating ends, the

thermostat keeps the fan on for the selected amount of time for increased efficiency.

4 periods per day

Both No Residential:

4 Periods = Wake, Leave, Return, Sleep 2 Periods = Wake, Sleep

Commercial: 4 Periods = Occupied 1, Unoccupied 1, Occupied 2, Unoccupied 2 2 Periods = Occupied 1, Unoccupied 1

Off Commercial No Runs the fan 1 to 3 hours before each

occupied period to provide a comfortable workplace upon arrival.

41 68-0311—03

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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

4020 Type of Override

4030 Override Duration

4050 Minimum Heat

Recovery Ramp Rate

Standard Initiate Occupancy

No Limit 1 to 12 Hours

Off 1° F/hr to 20° F/hr

Residential, Commercial

or Both

Requires

EIM Notes

Standard Commercial No Standard:

The system maintains temperatures

programmed for the occupied and

unoccupied time periods. Pressing

OVERRIDE will allow the user to make a

temporary schedule change.

Initiate Occupancy:

The system maintains temperature at an

energy saving level until the Press to Start

Occupancy button is pressed by the user.

The system will then maintain a

comfortable temperature until the occupied

period ends. This option is recommended

for cost savings when the workplace is

used infrequently or arrival times change

from day to day (example - schools). Once

the occupancy is activated by pressing the

Press to Start Occupancy button, the user

will still be able to perform a standard

OVERRIDE of the schedule.

3 hours Commercial No When the user presses the OVERRIDE

button, the thermostat will maintain the

new temperature for at least 1 hour. The

user can adjust the Hold Until time from 1

hour to the amount set for the Override

Duration (1-12 hours). Default setting is 3

hours. If set to No Limit, the user can

adjust the Hold Until time up to 24 hours.

5° F/hr Commercial No Off: The heating system will begin recovery

at the time that is scheduled.

When a Minimum Recovery Ramp Rate is

set, the thermostat will begin recovery

early to ensure the temperature is reached

at the scheduled time.

68-0311—03 42

Set a Minimum Recovery Ramp Rate

based on the rate that the heating system

can recover at for a cold day in your region.

Default setting is 5° F / hour.

If an outdoor sensor is installed, set an

Outdoor Temperature that is representative

of a cold day in your region to be

associated with the Minimum Recovery

Ramp Rate. The thermostat will begin

recovery at the optimal time based on a

calculated ramp rate, allowing the system

to recover on time and save energy during

changing outdoor conditions.

During recovery, the setpoint changes at a

rate in degrees per hour depending on the

outdoor temperature. If there is no outdoor

sensor, the Minimum Recovery Ramp

Rate is used.

Page 43

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

ISU

Number

Installer Setup

Name Settings Default

4050 Outdoor

Temperature used with Minimum Heat Recovery Ramp Rate

4060 Maximum Heat

Recovery Ramp Rate

Off

-20° F to 100°F

Off 1° F/hr to 20° F/hr

Residential, Commercial

or Both

Requires

EIM Notes

0° F Commercial No Off: The heating system will begin recovery

at the time that is scheduled.

When a Minimum Recovery Ramp Rate is set, the thermostat will begin recovery early to ensure the temperature is reached at the scheduled time.

Set a Minimum Recovery Ramp Rate based on the rate that the heating system can recover at for a cold day in your region. Default setting is 5° F / hour.

If an outdoor sensor is installed, set an Outdoor Temperature that is representative of a cold day in your region to be associated with the Minimum Recovery Ramp Rate. The thermostat will begin recovery at the optimal time based on a calculated ramp rate, allowing the system to recover on time and save energy during changing outdoor conditions.

During recovery, the setpoint changes at a rate in degrees per hour depending on the outdoor temperature. If there is no outdoor sensor, the Minimum Recovery Ramp Rate is used.

8° F/hr Commercial No Off: The heating system will begin recovery

at the time that is scheduled.

When a Maximum Recovery Ramp Rate is set, the thermostat will begin recovery early to ensure the temperature is reached at the scheduled time.

Set a Maximum Recovery Ramp Rate based on the rate that the heating system can recover at for a mild day in your region. Default setting is 8° F / hour.

Set an Outdoor Temperature that is representative of a mild day in your region to be associated with the Maximum Recovery Ramp Rate. The thermostat will begin recovery at the optimal time based on a calculated ramp rate, allowing the system to recover on time and save energy during changing outdoor conditions.

During recovery, the setpoint changes at a rate in degrees per hour depending on the outdoor temperature.

43 68-0311—03

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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

4060 Outdoor

Temperature used with Maximum Heat Recovery Ramp Rate

4070 Minimum Cool

Recovery Ramp Rate

Off

-20° F to 100° F

Off 1° F/hr to 20° F/hr

Residential, Commercial

or Both

Requires

EIM Notes

40° F Commercial No Off: The heating system will begin recovery

at the time that is scheduled.

When a Maximum Recovery Ramp Rate is

set, the thermostat will begin recovery

early to ensure the temperature is reached

at the scheduled time.

Set a Maximum Recovery Ramp Rate

based on the rate that the heating system

can recover at for a mild day in your region.

Default setting is 8° F / hour.

Set an Outdoor Temperature that is

representative of a mild day in your region

to be associated with the Maximum

Recovery Ramp Rate. The thermostat will

begin recovery at the optimal time based

on a calculated ramp rate, allowing the

system to recover on time and save energy

during changing outdoor conditions.

During recovery, the setpoint changes at a

rate in degrees per hour depending on the

outdoor temperature.

3° F/hr Commercial No Off: The cooling system will begin recovery

at the time that is scheduled.

When a Minimum Recovery Ramp Rate is

set, the thermostat will begin recovery

early to ensure the temperature is reached

at the scheduled time.

Set a Minimum Recovery Ramp Rate

based on the rate that the cooling system

can recover at for a hot day in your region.

Default setting is 3° F / hour.

If an outdoor sensor is installed, set an

Outdoor Temperature that is representative

of a hot day in your region to be associated

with the Minimum Recovery Ramp Rate.

The thermostat will begin recovery at the

optimal time based on a calculated ramp

rate, allowing the system to recover on

time and save energy during changing

outdoor conditions.

During recovery, the setpoint changes at a

rate in degrees per hour depending on the

outdoor temperature. If there is no outdoor

sensor, the Minimum Recovery Ramp

Rate is used.

68-0311—03 44

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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

4070 Outdoor

Temperature used with Minimum Cool Recovery Ramp Rate

4080 Maximum Cool

Recovery Ramp Rate

Off

-20° F to 100° F

Off 1° F/hr to 20° F/hr

Residential, Commercial

or Both

Requires

EIM Notes

90° F Commercial No Off: The cooling system will begin recovery

at the time that is scheduled.

When a Minimum Recovery Ramp Rate is set, the thermostat will begin recovery early to ensure the temperature is reached at the scheduled time.

Set a Minimum Recovery Ramp Rate based on the rate that the cooling system can recover at for a hot day in your region. Default setting is 3° F / hour.

If an outdoor sensor is installed, set an Outdoor Temperature that is representative of a hot day in your region to be associated with the Minimum Recovery Ramp Rate. The thermostat will begin recovery at the optimal time based on a calculated ramp rate, allowing the system to recover on time and save energy during changing outdoor conditions.

During recovery, the setpoint changes at a rate in degrees per hour depending on the outdoor temperature. If there is no outdoor sensor, the Minimum Recovery Ramp Rate is used.

6° F/hr Commercial No Off: The cooling system will begin recovery

at the time that is scheduled.

When a Maximum Recovery Ramp Rate is set, the thermostat will begin recovery early to ensure the temperature is reached at the scheduled time.

Set a Maximum Recovery Ramp Rate based on the rate that the cooling system can recover at for a mild day in your region. Default setting is 6° F / hour.

Set an Outdoor Temperature that is representative of a mild day in your region to be associated with the Maximum Recovery Ramp Rate.

The thermostat will begin recovery at the optimal time based on a calculated ramp rate, allowing the system to recover on time and save energy during changing outdoor conditions.

During recovery, the setpoint changes at a rate in degrees per hour depending on the outdoor temperature.

45 68-0311—03

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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

4080 Outdoor

Temperature used with Maximum Cool Recovery Ramp Rate

4090 Adaptive Intelligent

Recovery

Off

-20° F to 100°F

No Yes

Residential, Commercial

or Both

Requires

EIM Notes

70° F Commercial No Off: The cooling system will begin recovery

at the time that is scheduled.

When a Maximum Recovery Ramp Rate is

set, the thermostat will begin recovery

early to ensure the temperature is reached

at the scheduled time.

Set a Maximum Recovery Ramp Rate

based on the rate that the cooling system

can recover at for a mild day in your region.

Default setting is 6° F / hour.

Set an Outdoor Temperature that is

representative of a mild day in your region

to be associated with the Maximum

Recovery Ramp Rate.

The thermostat will begin recovery at the

optimal time based on a calculated ramp

rate, allowing the system to recover on

time and save energy during changing

outdoor conditions.

During recovery, the setpoint changes at a

rate in degrees per hour depending on the

outdoor temperature.

Yes Residential No No: The system will begin heating or

cooling recovery at the scheduled time.

4100 Minimum Cool

Setpoint

4100 Maximum Heat

Setpoint

4110 Keypad Lockout

4120 Residential:

Entry / Exit Remote

- Home Cool Setpoint

Commercial:

Entry / Exit Remote

- Occupied Cool Setpoint

50° F to 99° F

40° F to 90° F

Unlocked Partially Locked Fully Locked

None 50° F to 99° F

Note: setpoint is limited based on setting at ISU 4100.

Yes: The thermostat will begin heating or

cooling recovery early to ensure that the

temperature is reached at the scheduled

time. The thermostat will adjust the start

time of the equipment based on how

quickly the scheduled temperature was

reached on previous days.

50° F Both No The user cannot set the temperature below

this level.

90° F Both No The user cannot set the temperature above

this level.

Unlocked Both No Unlocked: User has access to all

thermostat settings.

Partially Locked: User can modify only

temperature settings.

Fully Locked: User cannot modify any

settings.

75° F Both No The thermostat maintains this Cool setting

when the user presses Home / Occupied at

the Entry / Exit Remote. Select None to

delete this temperature setting. The

thermostat only responds to the Entry / Exit

Remote if a temperature is pre-set at this

screen. See “Wireless Entry/Exit Remote”

beginning on page 128.

68-0311—03 46

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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

4120 Residential:

Entry / Exit Remote

- Home Heat Setpoint

Commercial:

Entry / Exit Remote

- Occupied Heat Setpoint

4130 Residential:

Entry / Exit Remote

- Away Cool Setpoint

Commercial:

Entry / Exit Remote

- Unoccupied Cool Setpoint

4130 Residential:

Entry / Exit Remote

- Away Heat Setpoint

Commercial:

Entry / Exit Remote

- Unoccupied Heat Setpoint

4140 Residential:

Entry / Exit Remote

- Vacation Cool Setpoint

Commercial:

Entry / Exit Remote

- Holiday Cool Setpoint

4140 Residential:

Entry / Exit Remote

- Vacation Heat Setpoint

Commercial:

Entry / Exit Remote

- Holiday Heat Setpoint

None 40° F to 90° F

Note: setpoint is limited based on setting at ISU 4100.

None 50° F to 99° F

Note: setpoint is limited based on setting at ISU 4100.

None 40° F to 90° F

Note: setpoint is limited based on setting at ISU 4100.

None 50° F to 99° F

Note: setpoint is limited based on setting at ISU 4100.

None 40° F to 90° F

Note: setpoint is limited based on setting at ISU 4100.

Residential, Commercial

or Both

Requires

EIM Notes

70° F Both No The thermostat maintains this Heat setting

when the user presses Home / Occupied at the Entry / Exit Remote. Select None to delete this temperature setting. The thermostat only responds to the Entry / Exit Remote if a temperature is pre-set at this screen. See “Wireless Entry/Exit Remote” beginning on page 128.

78° F Both No The thermostat maintains this Cool setting

when the user presses Away / Unoccupied at the Entry / Exit Remote. Select None to delete this temperature setting. The thermostat only responds to the Entry / Exit Remote if a temperature is pre-set at this screen. See “Wireless Entry/Exit Remote” beginning on page 128.

65° F Both No The thermostat maintains this Heat setting

82° F Both No The thermostat maintains this Cool setting

when the user presses Vacation / Holiday at the Entry / Exit Remote. Select None to delete this temperature setting. The thermostat only responds to the Entry / Exit Remote if a temperature is pre-set at this screen. See “Wireless Entry/Exit Remote” beginning on page 128.

60° F Both No The thermostat maintains this Heat setting

47 68-0311—03

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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

5000 What Sensors are

WIRED to your System?

5010 Indoor

Temperature Sensor Name

5020 What Terminals are

Wired to the Indoor Temperature Sensor?

5030 Indoor

Temperature Sensor Type

Check box on screen for each:

Indoor Air Temperature Outdoor Air Temperature Return Air Temperature Discharge Air Temperature

[Sensor Name]

None S1 S2 S3 S4

10K 20K

Residential, Commercial

or Both

Requires

EIM Notes

None Both Yes Wired Sensors requires an EIM (Equipment

Interface Module). This ISU is only

displayed if one of the S1-S4 terminals is

available.

Click boxes on screen to select which

sensors are wired to the S1-S4 terminals at

the EIM.

The thermostat will not display the Outdoor

Air Temperature option at ISU 5000 if a

wireless outdoor air sensor is connected.

The thermostat will not display the Indoor

Air Temperature option at ISU 5000 if 6

wireless indoor air sensors are connected.

If you have a wired Indoor Air Temperature

network (1, 4, 9 etc), the thermostat will

allow up to 5 wireless indoor air sensors.

The thermostat will not display the Return /

Discharge Air Temperature option at ISU

5000 if there is no fan in the system.

Indoor Sensor Both Yes Wired Sensors requires an EIM (Equipment

Interface Module).

Enter a name (location) of the Wired Indoor

Air Temperature Sensor.

None Both Yes Wired Sensors requires an EIM (Equipment

Interface Module).

10K:

if ISU 1010

Both Yes Wired Sensors requires an EIM (Equipment

Interface Module). Application is Residential

Select 10K or 20K based on the sensor

installed. Refer to resistance values below:

20K:

if ISU 1010: Application is Commercial

C7189U1005 = 10K ohm

C7772 = 20K ohm

TR21 = 20K ohm

TR21-A = 10K ohm (IMPORTANT - the

TR21-A must be used in combination with

a TR21 sensor or another TR21-A sensor

for the thermostat to calculate the correct

indoor temperature reading).

68-0311—03 48

See “Wiring guide — Wired Indoor

Sensors” beginning on page 154 for

information on the sensor type you should

select based on how the sensors are wired.

For example, you would select 20K when

you have two TR21-A (10K) sensors wired

in series.

Page 49

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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

ISU

Number

Installer Setup

Name Settings Default

5040 Which Sensors will

be used for TEMPERATURE Control? (Multiple Sensors are Averaged)

5050 What Terminals are

Wired to the Outdoor Temperature Sensor?

5070 What Terminals are

Wired to the Return Air Temperature Sensor?

5080 Return Air

Temperature Sensor Type

Thermostat (Internal) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote)

(Up to 6 Remote Sensors)

None S1 S2 S3 S4

10K 20K

Residential,

Sensors are Averaged (Internal and Remote)

Commercial

or Both

Both No Select the sensors to be used for

Requires

EIM Notes

temperature control. If you select more than one, the thermostat will average the temperature readings from each sensor.

See “Remote Indoor Sensors” beginning on page 130.

None Both Yes Wired Sensors requires an EIM (Equipment

Interface Module).

None Both Yes Wired Sensors requires an EIM (Equipment

Interface Module).

10K Both Yes Wired Sensors requires an EIM (Equipment

Interface Module).

Select 10K or 20K based on the sensor installed. Refer to resistance values below:

5090 What Terminals are

Wired to the Discharge Air Temperature Sensor?

5100 Discharge Air

Temperature Sensor Type

5110 A-Coil Low

Temperature Cutoff

None S1 S2 S3 S4

10K 20K

Off 35° F to 65° F (in 5° F increments)

50062329-001 = 10K ohm 32005180-002 = 10K ohm C7735A1000 = 10K ohm C7770A = 20K ohm C7041 = 20K ohm

None Both Yes Wired Sensors requires an EIM (Equipment

Interface Module).

10K Both Yes Wired Sensors requires an EIM (Equipment

Interface Module).

Select 10K or 20K based on the sensor installed. Refer to resistance values below:

50062329-001 = 10K ohm 32005180-002 = 10K ohm C7735A1000 = 10K ohm C7770A = 20K ohm C7041 = 20K ohm

Off Both Yes If an optional Discharge Air Temperature

sensor is used, this feature can help prevent icing on the air conditioning A-Coil.

When temperature reaches the limit you set, compressor(s) will shutoff while the system fan continues to run, until the temperature rises to a safe level.

49 68-0311—03

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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

6000 Select the Dry

Contacts in the System

6010 What Terminals are

Wired to the Remote Setback Dry Contact?

6020 Remote Setback

Dry Contact Setup

Check box on screen for each:

Remote Setback Full Drain Pan Alert Dirty Filter Alert Water Leak Alert System Shutdown Alert Service Needed Alert Fan Failure Alert Custom Alert

None S1 S2 S3 S4

Normally Open when Occupied Normally Closed when Occupied

Residential, Commercial

or Both

None Both

Requires

EIM Notes

Yes Remote Setback and Dry Contact Alerts

requires an EIM (Equipment Interface

Remote Setback

Module). This ISU is only displayed if one

of the S1-S4 terminals are available.

(Commercial Only)

See “Dry Contact Alerts” beginning on

page 95.

None Commercial Yes Remote Setback requires an EIM

(Equipment Interface Module).

Normally Open when Occupied

Commercial Yes Remote Setback requires an EIM

(Equipment Interface Module).

Choose an option appropriate for the type

of device installed:

Normally Open when Occupied: The Dry

Contact device is open when the room is

occupied and will close when the room is

unoccupied.

6030 Remote Setback

Time Delay from Occupied to Unoccupied

6040 Remote Setback -

Standby Cool Setpoint

0 to 30 minutes (in 5 minute increments)

72° F to 90° F

Normally Closed when Occupied: The Dry

Contact device is closed when the room is

occupied and will open when the room is

unoccupied.

0 minutes Commercial Yes Remote Setback requires an EIM

(Equipment Interface Module).

The Remote Setback Time Delay forces

the thermostat to wait before it switches

from Occupied to Standby temperature

settings.

When set to 0 minutes, the thermostat will

switch from Occupied to Standby

temperature settings immediately when the

room is unoccupied.

85° F Commercial Yes Remote Setback requires an EIM

(Equipment Interface Module).

During occupied periods, the occupancy

sensor tells the thermostat to go to

STANDBY (setback settings) when no one

is in the room. If someone is in the room,

then it follows the settings of the occupied

period. The occupancy sensor is ignored

during unoccupied periods.

If the thermostat is setup for non-

programmable, the occupancy sensor tells

the thermostat to go to STANDBY settings

when no one is in the room. If someone is

in the room, then it follows the settings set

by the user.

68-0311—03 50

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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

6040 Remote Setback -

Standby Heat Setpoint

6050 What Terminals are

Wired to the Full Drain Pan Alert Dry Contact?

6060 Full Drain Pan Alert

Dry Contact Setup

50° F to 70° F

None S1 S2 S3 S4

Normally Open Normally Closed

Residential, Commercial

or Both

Requires

EIM Notes

64° F Commercial Yes Remote Setback requires an EIM

(Equipment Interface Module).

During occupied periods, the occupancy sensor tells the thermostat to go to STANDBY (setback settings) when no one is in the room. If someone is in the room, then it follows the settings of the occupied period. The occupancy sensor is ignored during unoccupied periods.

If the thermostat is setup for nonprogrammable, the occupancy sensor tells the thermostat to go to STANDBY settings when no one is in the room. If someone is in the room, then it follows the settings set by the user.

None Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

Normally Open Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

6070 What Terminals are

Wired to the Dirty Filter Alert Dry Contact?

6080 Dirty Filter Alert

Dry Contact Setup

6090 What Terminals are

Wired to the Water Leak Alert Dry Contact?

None S1 S2 S3 S4

Normally Open Normally Closed

None S1 S2 S3 S4

Choose an option appropriate for the type of device installed.

Normally Open: The Dry Contact device is normally open and will close when the device detects the drain pan is full.

Normally Closed: The Dry Contact device is normally closed and will open when the device detects the drain pan is full.

None Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

Normally Open Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

Choose an option appropriate for the type of device installed:

Normally Open: The Dry Contact device is normally open and will close when the device detects a dirty filter.

Normally Closed: The Dry Contact device is normally closed and will open when the device detects a dirty filter.

None Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

51 68-0311—03

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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

6100 Water Leak Alert

Dry Contact Setup

6110 What Terminals are

Wired to the System Shutdown Alert Dry Contact?

6120 System Shutdown

Alert Dry Contact Setup

Normally Open Normally Closed

None S1 S2 S3 S4

Normally Open Normally Closed

Residential, Commercial

or Both

Requires

EIM Notes

Normally Open Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

Choose an option appropriate for the type

of device installed:

Normally Open: The Dry Contact device is

normally open and will close when the

device detects water.

Normally Closed: The Dry Contact device is

normally closed and will open when the

device detects water.

None Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

Normally Open Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

Choose an option appropriate for the type

of device installed:

Normally Open: The Dry Contact device is

normally open and will close when the

device is activated.

6130 What Terminals are

Wired to the Service Needed Alert Dry Contact?

6140 Service Needed

Alert Dry Contact Setup

6150 What Terminals are

Wired to the Fan Failure Alert Dry Contact?

None S1 S2 S3 S4

Normally Open Normally Closed

None S1 S2 S3 S4

Normally Closed: The Dry Contact device is

normally closed and will open when the

device is activated.

None Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

Normally Open Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

Choose an option appropriate for the type

of device installed:

Normally Open: The Dry Contact device is

normally open and will close when the

device is activated.

Normally Closed: The Dry Contact device is

normally closed and will open when the

device is activated.

None Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

68-0311—03 52

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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

6160 Fan Failure Alert

Dry Contact Setup

6170 What Terminals are

Wired to the Custom Alert Dry Contact?

6180 Custom Alert Dry

Contact Setup

Normally Open when Fan is Running

Normally Closed when Fan is Running

None S1 S2 S3 S4

Normally Open Normally Closed

Residential,

Normally Closed when

Commercial

or Both

Both Yes Dry Contact Alerts require an EIM

Requires

EIM Notes

(Equipment Interface Module).

Fan is Running

Choose an option appropriate for the type of device installed:

Normally Open when Fan is Running: The Dry Contact device is open when the fan is running and will close when the fan is not running.

Normally Closed when Fan is Running: The Dry Contact device is closed when the fan is running and will open when the fan is not running.

None Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

Normally Open Both Yes Dry Contact Alerts require an EIM

(Equipment Interface Module).

Choose an option appropriate for the type of device installed:

6190 Custom Alert Name

6200 Custom Alert

Message

7000 Filter Type

7020 Number of Air

Filters

View/Edit Custom Alert

None Electronic Air Cleaner Media

1 to 2

View/Edit

Both Yes Dry Contact Alerts require an EIM

Custom Alert

View/Edit

Both Yes Dry Contact Alerts require an EIM

Custom Alert

Media Both No

1 Both No

Normally Open: The Dry Contact device is normally open and will close when the device is activated.

Normally Closed: The Dry Contact device is normally closed and will open when the device is activated.

(Equipment Interface Module).

Enter a name for the custom alert dry contact. The thermostat displays this name including a brief message (entered on the next screen - ISU 6200) when a dry contact device detects a problem.

(Equipment Interface Module).

Enter a message for the custom alert dry contact. The thermostat displays this message when a dry contact device detects a problem.

53 68-0311—03

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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

7110 Air Filter 1

Replacement Reminder

Note: “1” is not displayed if there is only 1 filter.

7110 Air Filter 2

Replacement Reminder

7120 Electronic Air

Cleaner Cell Cleaning Reminder

7120 Electronic Air

Cleaner Pre-Filter Cleaning Reminder

7120 Electronic Air

Cleaner Post-Filter Replacement Reminder

8000 Humidifier Type

8010 Which Sensor will

be used for Humidification Control?

8030 What Terminals are

Wired to the Humidifier?

Off

Run Time: 10, 20, 30, 45, 60, 90, 120, 150

days

Calendar: 30, 45, 60, 75 days 3, 4, 5, 6, 9, 12, 15 months

Off

Run Time: 10, 20, 30, 45, 60, 90, 120, 150

days

Calendar: 30, 45, 60, 75 days 3, 4, 5, 6, 9, 12, 15 months

Off

Calendar Months: 6, 7, 8, 9, 10, 11, 12 months

Off

Calendar Months: 3, 4, 5, 6 months

Off

Calendar Months: 6, 7, 8, 9, 10, 11, 12 months

None Steam Bypass or Fan Powered

Thermostat (Internal) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote)

(Up to 6 Remote Sensors)

None U1 U2 U3

Residential, Commercial

Requires

or Both

Off Both No

None Both No

Thermostat

Both No Select a sensor to control humidification

(Internal)

Thermostat

Both No Number of Universal Outputs:

defaults to the next unused universal terminal (U1, U2, U3).

EIM Notes

(thermostat or an optional remote sensor).

If multiple sensors are installed, you can

use a different sensor for dehumidification

control. See “Humidification control”

beginning on page 130.

Note: Humidity sensing cannot be

averaged.

THX9321 Thermostat: U1 and U2 terminals

Equipment Interface Module (EIM): U1, U2

and U3 terminals

U1, U2, U3 are dry contacts that require

power. See “Wiring IAQ Equipment or a

Heat/Cool Stage to the Universal

Terminals” beginning on page 149.

68-0311—03 54

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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

8050 Humidification -

Window Protection

8060 System Modes

Allowing Humidification

Off On

Check box on screen for each:

Heat Cool Off

Residential, Commercial

or Both

Requires

EIM Notes

Off Both No Requires an optional outdoor sensor.

Off: The thermostat controls the humidity level to the user's desired humidity setting. Frost or condensation may appear on windows.

On: The thermostat prevents frost or condensation on windows by not allowing the humidity to go above the “Window Limit” when it is controlling the humidifier. The “Window Limit” is based on the current outdoor temperature and the user's window protection setting. The “Window Limit” is displayed on the user's humidification screen. See “Window Protection” beginning on page 102.

Heat

Both No Click boxes on screen to select which

system modes allow humidification. If a Default varies based on heating/cooling

box is NOT checked, the thermostat will

NOT allow humidification to operate in that

mode. equipment selected

Heat: Includes Heat, Emergency Heat and

Auto. If the system is in Auto mode, the

thermostat will allow humidification if the

last call was for heat.

8070 Humidification

Control

8080 Humidifier Lockout

Humidify Only when Heat is On

Humidify Only when Fan is On

Humidify on Demand: Thermostat Controls Fan

Humidify on Demand: Humidifier Controls Fan

Humidifier Allowed when Cool is Running

Humidifier Not Allowed when Cool is Running

Defaults to

Humidify Only when Heat is On

when ISU 8000 Humidifier Type is Bypass or Fan Powered

Defaults to

Humidify on Demand: Thermostat Controls Fan

when ISU 8000 Humidifier Type is Steam

Humidifier Allowed when Cool is Running

Cool: Includes Cool and Auto. If the system

is in Auto mode, the thermostat will allow

humidification if the last call was for cool. A

discharge air temperature sensor is

required to humidify in the Cool mode.

Off: The thermostat will allow

humidification when the system setting is

Off.

See “Set up Humidification” beginning on

page 102.

Both No Humidify Only when Heat is On: The

thermostat turns on the humidifier only if

the heat is currently running.

Humidify Only when Fan is On: The

thermostat turns on the humidifier only if

the fan is currently running.

Humidify on Demand - Thermostat

Controls Fan: The thermostat turns on the

humidifier and the fan when humidification

is needed.

Humidify on Demand - Humidifier Controls

Fan: The thermostat turns on the humidifier

when humidification is needed and the

humidifier controls the fan.

Both No

55 68-0311—03

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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

8100 Clean Tank / Water

Filter Replacement Reminder

8100 Humidifier Pad

Replacement Reminder

9000 Dehumidification

Equipment

9010 Which Sensor will

be used for Dehumidification Control?

9020 Which Indoor

Humidity Sensor should be displayed on the Home Screen?

Off 60 Run Time Days 90 Run Time Days 6 Calendar Months 12 Calendar Months

Residential:

None A/C with Low Speed Fan A/C with High Speed Fan Whole House Dehumidifier

Commercial:

None A/C with Low Speed Fan A/C with High Speed Fan Hot Gas Bypass Dehumidifier

Thermostat (Internal) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote) Sensor Name (Remote)

(Up to 6 Remote Sensors)

Humidification Sensor Dehumidification Sensor

Residential, Commercial

or Both

Requires

EIM Notes

Off Both No This ISU is only displayed if ISU 8000

Humidifier Type is Steam.

Run Time Days are not shown if ISU 8000 Humidifier Type is set to None.

Off Both No This ISU is only displayed if ISU 8000

Humidifier Type is Bypass or Fan Powered.

Run Time Days are not shown if ISU 8000 Humidifier Type is set to None.

None Both No See “Dehumidification - Residential”

beginning on page 105 or “Dehumidification - Commercial” beginning on page 109.

Thermostat (Internal)

Both No Select a sensor to control dehumidification

(thermostat or an optional remote sensor). If multiple sensors are installed, you can use a different sensor for humidification control. See “Dehumidification control” beginning on page 130.

Note: Humidity sensing cannot be averaged.

Humidification Sensor

Both No This ISU is only displayed when separate

humidity sensors are used to control humidification and dehumidification. Only one of the sensors can be displayed on the home screen. Select either the Humidification Sensor or the Dehumidification Sensor.

68-0311—03 56

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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

9040 What Terminals are

Wired to A/C with Low Speed Fan?

What Terminals are Wired to Hot Gas Bypass?

What Terminals are Wired to the Dehumidifier?

What Terminals are Wired to the Whole House Dehumidifier?

Note: Installer Setup Name varies depending on the dehumidification equipment installed.

9050 A/C with Low

Speed Fan Setup

Hot Gas Bypass Setup

Note: Installer Setup Name varies depending on the dehumidification equipment installed.

9070 Dehumidification -

Overcooling Limit

None U1 U2 U3

Normally Closed Normally Open

0°, 1°, 2°, 3° F

Residential,

Thermostat defaults to the next unused universal

Commercial

or Both

Both No Number of Universal Outputs:

Requires

EIM Notes

THX9321 Thermostat: U1 and U2 terminals

Equipment Interface Module (EIM): U1, U2

and U3 terminals terminal (U1, U2, U3).

U1, U2, U3 are dry contacts that require

power. See “Wiring IAQ Equipment or a

Heat/Cool Stage to the Universal

Terminals” beginning on page 149.

Defaults to

Normally

Both No Choose an option appropriate for the type

of equipment installed. Closed when ISU 9000 Dehumidificati on Equipment

Normally Open: U1, U2 or U3 will normally

be open and will close when the thermostat

calls for dehumidification. is A/C with Low Speed Fan

Normally Closed: U1, U2 or U3 will

normally be closed and will open when the Defaults to

thermostat calls for dehumidification.

Normally Open

when ISU 9000 Dehumidificati on Equipment is Hot Gas

Number of Universal Outputs:

THX9321 Thermostat: U1 and U2 terminals

Equipment Interface Module (EIM): U1, U2

and U3 terminals Bypass

3° F Residential No This ISU is only displayed when ISU 9000

Dehumidification Equipment is set to A/C

with Low Speed Fan or A/C with High

Speed Fan.

The thermostat uses the cooling system to

reduce humidity by lowering the

temperature up to 3° F below the current

cool setpoint until the desired humidity

level is reached.

The thermostat keeps the temperature

below the cooling setpoint until the desired

humidity level is reached.

0° F is only an option when ISU 9000

Dehumidification Equipment is set to A/C

with Low Speed Fan.

57 68-0311—03

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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

9080 Dehumidification

Control

9090 Dehumidification

Minimum On Time

9100 High Humidity

Comfort Reset Setting

Basic

Minimum On Time

High Humidity Comfort Reset

High Humidity Comfort Reset with Minimum On Time

Reheat

Reheat with Minimum On Time

5 to 15 minutes

1° F to 5° F

Residential, Commercial

or Both

Requires

EIM Notes

Basic Commercial No See “Dehumidification - Commercial”

beginning on page 109.

10 minutes Commercial No This option ensures that the compressor

runs long enough to effectively reduce humidity when the cooling equipment is cycled on. The compressor will run for the “minimum on time” you set until the desired humidity level is reached.

2° F Commercial No The thermostat uses the cooling system to

reduce humidity by lowering the temperature up to 5° F below the current cool setpoint until the desired humidity level is reached.

9120 System Modes

Allowing Dehumidification

Check box on screen for each:

Heat Cool Off

Cool

Default varies based on heating/cooling equipment selected

The thermostat keeps the temperature below the cooling setpoint until the desired humidity level is reached.

Both No This ISU is only displayed when ISU 9000

Dehumidification Equipment is set to

Dehumidifier.

Click boxes on screen to select which system modes allow dehumidification. If a box is NOT checked, the thermostat will NOT allow dehumidification to operate in that mode.

Heat: Includes Heat, Emergency Heat and Auto. If the system is in Auto mode, the thermostat will allow dehumidification if the last call was for heat.

Cool: Includes Cool and Auto. If the system is in Auto mode, the thermostat will allow dehumidification if the last call was for cool.

Off: The thermostat will allow dehumidification when the system setting is Off.

See “Dehumidification - Residential” beginning on page 105 or “Dehumidification - Commercial” beginning on page 109.

68-0311—03 58

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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

9130 Dehumidifier Fan

Control

9140 Dehumidifier

Lockout

9180 Dehumidification

Away Mode

Thermostat Controls Fan Equipment Controls Fan

Dehumidifier Allowed when Cool is Running

Dehumidifier Not Allowed when Cool is Running

Not Allowed Allowed

Residential,

Thermostat Controls Fan

Commercial

or Both

Both No This ISU is only displayed when ISU 9000

Requires

EIM Notes

Dehumidification Equipment is set to

Dehumidifier.

Thermostat Controls Fan: The thermostat

turns on the dehumidifier and the fan when

dehumidification is needed.

Equipment Controls Fan: The thermostat

turns on the dehumidifier when

dehumidification is needed. The fan is

controlled by the equipment.

Dehumidifier Allowed when Cool is

Both No This ISU is only displayed when ISU 9000

Dehumidification Equipment is set to

Dehumidifier.

Running

Dehumidifier Allowed when Cool is

Running: Dehumidifier can run when the

cooling system is on.

Dehumidifier Not Allowed when Cool is

Running: Dehumidifier can NOT run when

the cooling system is on.

Not Allowed Both No This ISU is NOT displayed when ISU 9000

Dehumidification Equipment is None.

9190 Dehumidification

Away Mode - Fan Control

9200 Dehumidification

Away Mode - Low Limit Temperature Setting

9200 Dehumidification

Away Mode Temperature Setting

9200 Dehumidification

Away Mode Dehumidification Setting

9210 Dehumidifier Filter

Replacement Reminder

Automatic On Circulate

70° F to 80° F

70° F to 99° F

40% to 70% (in 5% increments)

Off 30, 60, Calendar Days 3 to 12 Calendar Months (in 1

month increments)

ISU 9190 to 9200 are only displayed when

ISU 9180 Dehumidification Away Mode is

Allowed.

See “Dehumidification Away Mode”

beginning on page 107.

Automatic Both No The On and Circulate settings may re-

introduce humidity into the living space.

76° F Both No If the cooling system is used to control

humidity while Dehumidification Away

Mode is active, the thermostat allows the

cooling system to lower the indoor air to

the Low Limit Temperature Setting to reach

the dehumidification setting at ISU 9200.

85° F Both No The temperature maintained while

Dehumidification Away Mode is active and

the desired humidity level is satisfied.

65% Both No The desired humidity level while

Dehumidification Away Mode is active.

Off Both No

59 68-0311—03

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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

10000 Ventilation Type

10020 What Terminals are

Wired to the Ventilator?

What Terminals are Wired to the Fresh Air Damper?

Note: Installer Setup Name varies depending on the ventilation equipment installed.

10050 Ventilation Control

Method

None ERV / HRV Passive (Fan Only) Fresh Air Damper

None U1 U2 U3

ASHRAE Percent On Time

Residential, Commercial

or Both

Requires

EIM Notes

None Both No None: The thermostat does not control

ventilation.

ERV/HRV: The thermostat controls an Energy Recovery Ventilator or Heat Recovery Ventilator for ventilation.

Passive (Fan Only): The thermostat turns on the fan for ventilation.

Fresh Air Damper: The thermostat turns on the fan and opens a fresh air damper for ventilation.

Thermostat defaults to the next unused universal

Both No Number of Universal Outputs:

THX9321 Thermostat: U1 and U2 terminals Equipment Interface Module (EIM): U1, U2

and U3 terminals terminal (U1, U2, U3).

U1, U2, U3 are dry contacts that require

power. See “Wiring IAQ Equipment or a

Heat/Cool Stage to the Universal

Terminals” beginning on page 149.

Defaults to

ASHRAE

Both No See “Ventilation Control Methods (ISU

10050)” beginning on page 112. when ISU 1010 Application is set to Residential.

10060 Ventilation Fan

Control

10090 Number of

Bedrooms

10090 Size of House

10100 Enter Equipment

Ventilation Rate

Thermostat Controls Fan Equipment Controls Fan

1 to 6

1000 to 5000 sq. ft. (in 100 sq. ft. increments)

(90 to 460 sq. m.)

30 to 350 CFM (in 5 CFM increments)

(850 - 9900 LPM)

Percent on Time is the

only choice when ISU 1010 Application is set to Commercial.

Thermostat Controls Fan

Both No Thermostat Controls Fan: The thermostat

turns on the ventilation equipment and the fan when ventilation is needed.

Equipment Controls Fan: The thermostat turns on the ventilation equipment when ventilation is needed. The fan is controlled by the equipment.

2 bedrooms Residential No This ISU is only displayed when ISU10050

Ventilation Control Method is set to ASHRAE (Residential only).

1000 sq. feet Residential No This ISU is only displayed when ISU10050

Ventilation Control Method is set to ASHRAE (Residential only).

150 Residential No This ISU is only displayed when ISU10050

Ventilation Control Method is set to ASHRAE (Residential only).

68-0311—03 60

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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

10120 Ventilation Percent

On Time

10125 Ventilation Priority

10% to 100% (in 10% increments)

Lockouts are Priority ASHRAE is Priority

Residential, Commercial

or Both

Requires

EIM Notes

30% Both No The thermostat operates ventilation

equipment based on a percentage entered in the installer setup (ISU 10120). For example, if Percent on Time is set to 50%, the ventilation equipment will run at random times during a 1 hour period until it reaches a 50% run time (approximately 30 minutes).

Lockouts are Priority

Residential No Lockouts are Priority: The thermostat

places a priority on lockouts versus the ASHRAE 62.2 ventilation standard. The thermostat will not run ventilation during the following lockout conditions (if configured) unless you manually call for ventilation:

• Lockout Ventilation during Outdoor

Conditions (ISU 10130)

• Lockout Ventilation on Humidification or

Dehumidification Calls (ISU 10140)

• Lockout Ventilation during “Sleep”

(Residential) or “Unoccupied” (Commercial) program periods. Note: This option is set by the user on the Ventilation screen in the Menu.

ASHRAE is Priority: ASHRAE requires additional ventilation following a long off cycle. The thermostat meets the ASHRAE

62.2 ventilation standard by running additional ventilation when outdoor conditions are favorable. If ASHRAE cannot be met when outdoor conditions are favorable, the thermostat will override the outdoor lockouts and run ventilation. When using this option, it is recommended to increase the rate (CFM) of the ventilation equipment to meet the ASHRAE 62.2 ventilation standard in a shorter run time.

10130 Ventilation Low

Temperature Lockout

Off

-20° F to 40° F (in 5° F increments)

Notes:

• ISU 10140 “Lockout Ventilation on

Humidification or Dehumidification Calls” is not an option when you select “ASHRAE is Priority”.

• The ability to lockout ventilation during the

“Sleep” or “Unoccupied” program periods is not an option when you select “ASHRAE is Priority”.

Off Both No Requires an outdoor sensor.

This ISU is only displayed when ISU 10000 Ventilation Type is set to ERV / HRV or Fresh Air Damper.

See “Ventilation — Outdoor Condition Lockouts (ISU 10130)” beginning on page 113.

61 68-0311—03

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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

10130 Ventilation High

Temperature Lockout

10130 Ventilation High

Dew Point Lockout

10140 Lockout Ventilation

on Humidification or Dehumidification Calls

Off 80° F to 110° F (in 5° F

increments)

Off 65° F to 85° F (in 5° F increments)

Off On

Residential, Commercial

or Both

Requires

EIM Notes

Off Both No Requires an outdoor sensor.

This ISU is only displayed when ISU 10000 Ventilation Type is set to ERV / HRV or Fresh Air Damper.

See “Ventilation — Outdoor Condition Lockouts (ISU 10130)” beginning on page 113.

Off Both No Requires a Wireless Outdoor Sensor

(sense outdoor humidity).

This ISU is only displayed when ISU 10000 Ventilation Type is set to ERV / HRV or Fresh Air Damper.

See “Ventilation — Outdoor Condition Lockouts (ISU 10130)” beginning on page 113.

Off Both No This feature is used to help reach the user's

desired humidity level by not allowing the ventilation equipment to run during a call for humidification or dehumidification.

Off: Ventilation is allowed to run during a call for humidification or dehumidification.

10160 Ventilate on High

Indoor Humidity

10170 Ventilator Core

Cleaning Reminder

10170 Ventilator Filter

Cleaning Reminder

11000 Number of UV

Devices

11050 UV Bulb 1

Replacement Reminder

Off On (Heat Mode Only)

Off 3, 6, 9, 12 Calendar Months

0, 1, 2

Off, 6, 12, 24 Calendar Months

On: Ventilation is NOT allowed to run during a call for humidification or dehumidification.

On (Heat Mode Only)

Both No This ISU is only displayed when ISU 10000

Ventilation Type is set to ERV / HRV.

Off: The humidity level has no effect on ventilation.

On: The thermostat removes excess humidity by turning on the ventilator when the indoor humidity rises 10% above the user's humidification setting. The thermostat must be in the heat mode to ventilate on high humidity.

Off Both No

0 Both No Press the up/down arrows to select the

number of UV devices installed in the system. Some systems may have two UV devices, one for the A-Coil and another for Air Treatment. A replacement reminder can be setup for each one. Select 0 if no UV devices are installed.

Off Both No

Note: “1” is not displayed if there is only 1 UV Bulb

68-0311—03 62

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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

11050 UV Bulb 2

Replacement Reminder

12000 Installer Custom

Reminders

13000 Heat Delta T

Diagnostics

13010 Cool Delta T

Diagnostics

Off, 6, 12, 24 Calendar Months

View / Edit Custom Reminders Add Custom Reminders

Off On

Residential, Commercial

or Both

Requires

EIM Notes

Off Both No

None Both No See “Customizable Reminders” beginning

on page 116.

On Both Yes This ISU is only displayed when the

thermostat is setup for a Non-Zoned Forced Air Heating System and the thermostat is setup for 10K Discharge and Return Air Sensors at ISU 5000 (What Sensors are WIRED to your System?)

This ISU is NOT displayed when the thermostat is setup for an External Fossil Fuel Kit or an Economizer (ISU 2190 and

2220).

See “Delta T Diagnostics” beginning on page 87.

On Both Yes This ISU is only displayed when the

thermostat is setup for a Non-Zoned Cooling System and the thermostat is setup for 10K Discharge and Return Air Sensors at ISU 5000 (What Sensors are WIRED to your System?)

13015 Set Advanced Delta

T Diagnostic Options

13020 Allow Delta T

Diagnostics During Humidification

No Yes

This ISU is NOT displayed when the thermostat is setup for an Economizer (ISU

2220).

See “Delta T Diagnostics” beginning on page 87.

No Both Yes See “Advanced Options for Delta T

Diagnostics” beginning on page 90

Yes Both Yes This ISU is only displayed when ISU 13015

Set Advanced Diagnostic Options is set to Yes.

No: The thermostat does NOT monitor Delta T of the system during a call for humidification.

Yes: The thermostat monitors Delta T of the system during a call for humidification.

63 68-0311—03

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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

13030 Allow Delta T

Diagnostics During Dehumidification

13040 Allow Delta T

Diagnostics During Ventilation

13050 Allow Heat Delta T

Diagnostics when Indoor Temperature is [Indoor

13050

Temperature Range]

13060 Allow Heat Delta T

Diagnostics when Indoor Humidity is [Indoor Humidity Range]

13060

13070 Allow Heat Delta T

Diagnostics when Outdoor Temperature is [Outdoor

13070

Temperature Range]

No Yes

Minimum Setting

No Limit 35° F to 115° F (in 5° F

increments)

Maximum Setting

No Limit 40° F to 120° F (in 5° F

increments)

Minimum Setting

No Limit 0% to 95% (in 5% increments)

Maximum Setting

No Limit 5% to 100% (in 5% increments)

Minimum Setting

No Limit

-50° F to 135° F (in 5° F increments)

Maximum Setting

No Limit

-45° F to 140° F (in 5° F increments)

Residential, Commercial

or Both

Requires

EIM Notes

Yes Both Yes This ISU is only displayed when ISU 13015

Set Advanced Diagnostic Options is set to Yes.

No: The thermostat does NOT monitor Delta T of the system during a call for dehumidification.

Yes*: The thermostat monitors Delta T of the system during a call for dehumidification.

* Default is Yes for Dehumidifiers and A/C with High Speed Fan. The thermostat does NOT monitor Delta T Diagnostics during dehumidification if it is setup for A/C with Low Speed Fan, Hot Gas Bypass or Reheat.

Yes Both Yes This ISU is only displayed when ISU 13015

Set Advanced Diagnostic Options is set to Yes.

No: The thermostat does NOT monitor Delta T of the system during a call for ventilation.

Yes: The thermostat monitors Delta T of the system during a call for ventilation.

No Limit

Both Yes This ISU only applies to Heating.

(Always)

This ISU is only displayed when ISU 13015 Set Advanced Diagnostic Options is set to Yes.

No Limit (Always)

Both Yes

The thermostat monitors Delta T of the system ONLY when the indoor temperature is within a certain range. Set to No Limit to monitor Delta T during all indoor temperature conditions.

No Limit

Both Yes This ISU only applies to Heating.

(Always)

This ISU is only displayed when ISU 13015 Set Advanced Diagnostic Options is set to

Yes. No Limit (Always)

Both Yes

The thermostat monitors Delta T of the

system ONLY when the indoor humidity is

within a certain range. Set to No Limit to

monitor Delta T during all indoor humidity

conditions.

No Limit

Both Yes This ISU only applies to Heating.

(Always)

This ISU is only displayed when ISU 13015

Set Advanced Diagnostic Options is set to

Yes.

No Limit (Always)

Both Yes

The thermostat monitors Delta T of the

system ONLY when the outdoor

temperature is within a certain range. Set

to No Limit to monitor Delta T during all

outdoor temperature conditions.

68-0311—03 64

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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

13080 Allow Heat Delta T

Diagnostics when Outdoor Humidity is [Outdoor Humidity Range]

13080

13090 Allow Backup Heat

Delta T Diagnostics when Indoor Temperature is [Indoor

13090

Temperature Range]

13100 Allow Backup Heat

Delta T Diagnostics when Indoor Humidity is [Indoor Humidity Range]

13100

13110 Allow Backup Heat

Delta T Diagnostics when Outdoor Temperature is [Outdoor

13110

Temperature Range]

13120 Allow Backup Heat

Delta T Diagnostics when Outdoor Humidity is [Outdoor Humidity

13120

Range]

Minimum Setting

No Limit 0% to 95% (in 5% increments)

Maximum Setting

No Limit 5% to 100% (in 5% increments)

Minimum Setting

No Limit 35° F to 115° F (in 5° F

increments)

Maximum Setting

No Limit 40° F to 120° F (in 5° F

increments)

Minimum Setting

No Limit 0% to 95% (in 5% increments)

Maximum Setting

No Limit 5% to 100% (in 5% increments)

Minimum Setting

No Limit

-50° F to 135° F (in 5° F increments)

Maximum Setting

No Limit

-45° F to 140° F (in 5° F increments)

Minimum Setting

No Limit 0% to 95% (in 5% increments)

Maximum Setting

No Limit 5% to 100% (in 5% increments)

No Limit (Always)

Residential, Commercial

or Both

Requires

EIM Notes

Both Yes This ISU only applies to Heating.

This ISU is only displayed when ISU 13015 Set Advanced Diagnostic Options is set to Yes.

Both Yes

The thermostat monitors Delta T of the system ONLY when the outdoor humidity is within a certain range. Set to No Limit to monitor Delta T during all outdoor humidity conditions.

Both Yes This ISU only applies to Backup Heat.

This ISU is only displayed when ISU 13015 Set Advanced Diagnostic Options is set to Yes.

Both Yes

The thermostat monitors Delta T of the system ONLY when the indoor temperature is within a certain range. Set to No Limit to monitor Delta T during all indoor temperature conditions.

Both Yes This ISU only applies to Backup Heat.

This ISU is only displayed when ISU 13015 Set Advanced Diagnostic Options is set to Yes.

Both Yes

The thermostat monitors Delta T of the system ONLY when the indoor humidity is within a certain range. Set to No Limit to monitor Delta T during all indoor humidity conditions.

Both Yes This ISU only applies to Backup Heat.

This ISU is only displayed when ISU 13015 Set Advanced Diagnostic Options is set to Yes.

Both Yes

The thermostat monitors Delta T of the system ONLY when the outdoor temperature is within a certain range. Set to No Limit to monitor Delta T during all outdoor temperature conditions.

Both Yes This ISU only applies to Backup Heat.

This ISU is only displayed when ISU 13015 Set Advanced Diagnostic Options is set to Yes.

Both Yes

The thermostat monitors Delta T of the system ONLY when the outdoor humidity is within a certain range. Set to No Limit to monitor Delta T during all outdoor humidity conditions.

65 68-0311—03

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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

13130 Allow Cool Delta T

Diagnostics when Indoor Temperature is [Indoor

13130

Temperature Range]

13140 Allow Cool Delta T

Diagnostics when Indoor Humidity is [Indoor Humidity Range]

13140

13150 Allow Cool Delta T

Diagnostics when Outdoor Temperature is [Outdoor

13150

Temperature Range]

13160 Allow Cool Delta T

Diagnostics when Outdoor Humidity is [Outdoor Humidity Range]

13160

Minimum Setting

No Limit 35° F to 115° F (in 5° F

increments)

Maximum Setting

No Limit 40° F to 120° F (in 5° F

increments)

Minimum Setting

No Limit 0% to 95% (in 5% increments)

Maximum Setting

No Limit 5% to 100% (in 5% increments)

Minimum Setting

No Limit

-50° F to 135° F (in 5° F increments)

Maximum Setting

No Limit

-45° F to 140° F (in 5° F increments)

Minimum Setting

No Limit 0% to 95% (in 5% increments)

Maximum Setting

No Limit 5% to 100% (in 5% increments)

No Limit (Always)

Residential, Commercial

or Both

Requires

EIM Notes

Both Yes This ISU only applies to Cooling.

This ISU is only displayed when ISU 13015

Set Advanced Diagnostic Options is set to

Yes.

Both Yes

The thermostat monitors Delta T of the

system ONLY when the indoor temperature

is within a certain range. Set to No Limit to

monitor Delta T during all indoor

temperature conditions.

Both Yes This ISU only applies to Cooling.

This ISU is only displayed when ISU 13015

Set Advanced Diagnostic Options is set to

Yes.

Both Yes

The thermostat monitors Delta T of the

system ONLY when the indoor humidity is

within a certain range. Set to No Limit to

monitor Delta T during all indoor humidity

conditions.

Both Yes This ISU only applies to Cooling.

This ISU is only displayed when ISU 13015

Set Advanced Diagnostic Options is set to

Yes.

Both Yes

The thermostat monitors Delta T of the

system ONLY when the outdoor

temperature is within a certain range. Set

to No Limit to monitor Delta T during all

outdoor temperature conditions.

Both Yes This ISU only applies to Cooling.

This ISU is only displayed when ISU 13015

Set Advanced Diagnostic Options is set to

Yes.

Both Yes

The thermostat monitors Delta T of the

system ONLY when the outdoor humidity is

within a certain range. Set to No Limit to

monitor Delta T during all outdoor humidity

conditions.

68-0311—03 66

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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

13170 Defrost Cycle

13180 Delta T Alert

Sensitivity

13190 Display Delta T

Alerts to User

None 1 to 60 minutes (in 1 minute

increments)

1 to 5

No Yes

Residential, Commercial

or Both

Requires

EIM Notes

10 Both Yes This ISU is only displayed if ISU 2010

Heating Equipment Type is Air to Air Heat Pump.

Press the up/down arrows to set the maximum time duration of a defrost cycle. Check the heat pump documentation for the defrost cycle time.

Note: The diagnostic algorithm detects when the system goes into defrost based on the measured Delta T of the system. When the thermostat detects this change in temperature, the thermostat will not compare Delta T to the Minimum and Maximum Delta T Fault Limits. After the defrost cycle has ended, the thermostat will resume monitoring Delta T of the system.

3 Both Yes See “Delta T Alert Sensitivity (ISU 13180).”

beginning on page 90.

Yes Both Yes No: The thermostat does NOT display a

Delta T alert to the user when a Delta T alert is entered into the log.

Yes: The thermostat displays a Delta T alert to the user when a Delta T alert is entered into the log.

14000 Clock Format

14010 Daylight Saving

Time

14020 Indoor

Temperature Display Offset

14020 Indoor Humidity

Display Offset

15000 Dealer Name

15000 Dealer Phone

15010 Dealer Email

Address

15010 Dealer Website

15020 Dealer Message

12 hour 24 hour

Off On

-3° F to 3° F (in 1° F increments)

-12% to 12% (in 1% increments)

[Dealer Name]

[Dealer Phone]

[Dealer Email Address]

[Dealer Website]

[Dealer Message]

See “Delta T Alerts” beginning on page 90.

12 Both No

On Both No Set to Off in areas that do not follow

Daylight Saving Time.

0° F Both No 0° F - No difference in displayed

temperature and the actual room temperature.

The thermostat displays up to 3°F (1.5°C) lower or higher than the actual measured temperature.

0% Both No 0% - No difference in displayed humidity

and the actual room humidity.

The thermostat displays up to 12% lower or higher than the actual measured humidity.

None Both No

67 68-0311—03

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

CAUTION

INSTALLER TESTS

Use the installer tests to check out the system:

• Equipment Test: Tests the heating, cooling, fan, and IAQ equipment. The test allows you to manually call for each system to ensure the equipment and thermostat operate properly. Any minimum off timers are ignored during the system test. You can test the following equipment: —Heat —Em Heat —Cool —Fan — Humidification — Dehumidification — Ventilation — Economizer — Time of Day

• Wireless Signal Strength Test: Run this test to verify that the thermostat can communicate properly in the installed location. The test measures the signal strength between the — Thermostat and the Equipment Interface Module (in

non-zoned applications)

— Thermostat and the TrueZONE Wireless Adapter (in

zoned applications)

Accessing Installer Tests

1. Press MENU on the home screen, then scroll down and

press Installer Options.

2. Enter the password (date code) when prompted. See “Finding Your Password (Date Code) to Access Installer Options” beginning on page 20.

3. Press Installer Test.

Fig. 60.

4. Select Equipment Test or Wireless Signal Strength Test.

Fig. 61.

Equipment Damage Hazard. Minimum compressor off time is bypassed during the Equipment Test

Avoid cycling compressor quickly.

68-0311—03 68

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Using the Equipment Test

1. Press Equipment Test on the Installer Test screen (see

Fig. 61). Turn the equipment on/off as needed and then press Next Test to test the remaining equipment. The time out for the Equipment Test mode is 30 minutes (if there is no keypress for 30 minutes, the thermostat will automatically exit the Equipment Test).

2. Run Time, Discharge, Return and Delta T data are displayed for heating and cooling tests (requires Discharge and Return Air Sensors). The Discharge, Return and Delta T are updated every 30 seconds during the test. The Run Time counter starts over when the next stage is turned on.

Fig. 62.

Using the Wireless Signal Strength Test

1. On the Installer Test screen (see Fig. 61) press Wireless Signal Strength Test.

Fig. 64.

2. Press Test Signal Strength to begin. After a brief

pause, the thermostat will display test results.

3. A number from 5-10 means communication is good.

3. Discharge, Return and Delta T are updated every 30

seconds during the equipment test.

Fig. 63.

4. When that equipment test is complete, press Next Test.

5. When system testing is complete, press Exit Test.

Fig. 65.

4. If the screen displays “No Signal,” move the thermostat

to a different location and test again.

Fig. 66.

69 68-0311—03

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

M28491

M28849A

M7514

Mounting Optional Accessories

Mounting Outdoor Sensor

Mount the sensor where:

• it cannot be tampered with.

• there is good air circulation.

• it can measure true outdoor ambient temperature and humidity.

• wire distance between C7089U1006 and EIM is less than 200 feet (wired sensor only).

Do not mount the sensor:

• in direct sunlight.

• where hot or cold air blows on the sensor. Discharge line from an outdoor compressor unit, vent or fan causes inaccurate temperature readings.

• where snow, ice or debris can cover it.

MOUNTING C7089R1013 WIRELESS OUTDOOR SENSOR

Use the following steps to mount the sensor (see Fig. 67):

1. Mount the sensor on a vertical exterior wall, at least 6 inches below any overhang. Choose a location protected from direct sunlight.

2. Place sensor securely in bracket, facing away from wall.

MOUNTING C7089U1006 WIRED OUTDOOR TEMPERATURE SENSOR

Use the following steps to mount the sensor:

1. Remove the sensor from the mounting clip.

2. Mark the area on the location selected for mounting the

sensor mounting clip.

3. Mount the clip.

4. See “Wiring C7089U1006 Outdoor Sensor” on page 153.

Fig. 67. Mounting Outdoor Sensor.

Fig. 68. Typical locations for C7089U1006 Outdoor Sensor.

Mounting C7189R1004 Wireless Indoor Sensor

Use the following steps to mount the sensor (see Fig. 69):

1. Remove the wallplate and mount it 4 to 6 feet above the floor on an interior wall. Drill 3/16-inch holes for drywall, 7/32-inch for plaster.

2. Attach sensor securely to wallplate as shown.

Fig. 69. Mounting Indoor Sensor.

68-0311—03 70

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

M24056

M24057

M33095

Mounting C7189U1005 Wired Indoor Sensor

Use the following steps to mount the sensor:

1. Remove the cover from the remote sensor (see Fig. 70).

Fig. 70. Remove the cover.

2. Pull wires through wire hole.

3. Position wallplate on wall, level and mark screw hole

positions with pencil.

4. Drill holes at marked positions, then tap in supplied wall anchors.

5. Place wallplate over anchors, insert and tighten mounting screws (see Fig. 71).

Mounting Entry/Exit Remote or Vent Boost Remote

Mounting the remote is optional.

1. Remove the front cover from the remote.

2. Use provided screws and wall anchors to fasten the

remote to the wall. Drill 3/16-inch holes for drywall, 7/32inch for plaster.

Fig. 72. Mounting Entry/Exit Remote or Vent Boost

Remote.

3. Replace the cover on the remote.

Fig. 71. Mount wallplate to wall.

6. Replace the cover on the remote sensor.

71 68-0311—03

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

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.

Indoor conditions. Shows indoor temperature and humidity.

Current date and time.

Current status. Shows system mode (heat/cool),

outdoor temperature and humidity (with optional outdoor sensor).

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.

Thermostat location. Quickly identify which thermostat is in control of a specific area.

Current schedule. Touch an arrow to change temperature setting and set a Temporary Hold.

Override. Touch to temporarily override program schedule.

Indoor conditions. Shows indoor temperature and humidity.

Current date and time.

Current status. Shows system mode (heat/cool), outdoor

temperature and humidity (with optional outdoor sensor).

USB port. Use USB device to load holiday schedules and custom events.

OPERATION

Fig. 73. Quick reference to residential display.

Fig. 74. Quick reference to commercial display.

68-0311—03 72

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Fri, Jun 14, 2013

6:30 pm

Done

FAN

Done

SYSTEM

Done

Setting the time/date

1. Touch the current time. The screen displays Set Time/

Set Date.

Fig. 75.

2. Touch Set Time or Set Date.

Fig. 76.

3. Touch  or  until the proper time/date is displayed.

4. Touch Done to save or Cancel to ignore changes.

3. Touch Done to save and exit.

Fig. 79.

• On: Fan is always on.

• Automatic: Fan runs only when the heating or cooling system is on.

• Circulate: Fan runs randomly about 35% of the time (residential use only).

• Follow Schedule: Fan controlled by program.

NOTE: In commercial use, touch Automatic or On to tem-

porarily override the programmed fan schedule.

Setting system mode

1. Touch SYSTEM to display system settings.

Fig. 77.

NOTE: The thermostat will automatically switch to and

from Daylight Saving Time.

Setting the fan

1. Touch FAN to display fan settings.

Fig. 78.

2. Touch On, Automatic, Circulate, or Follow Schedule.

Fig. 80.

2. Touch desired option:

• Heat: Thermostat controls only the heating system.

• Cool: Thermostat controls only the cooling system.

• Off: Heating/cooling systems are off.

• Automatic: Thermostat selects heating or cooling as needed depending on the indoor temperature.

• Emergency Heat (heat pumps with aux. heat): Controls auxiliary/emergency heat. Compressor is locked out.

3. Touch Done to save and exit.

Fig. 81.

NOTE: The Automatic and Emergency Heat system set-

tings may not appear, depending on how your thermostat was installed.

73 68-0311—03

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Create / Edit Schedule

6:00 am

WAKE

Done

Preset Energy-Saving Schedules

This thermostat uses default Energy Saver settings that can reduce your heating/cooling expenses.

Table 5. Residential Use Default Schedule.

Start

Period

Wake 6:00 am 70° 78° 70° 78°

Leave 8:00 am 62° 85° 62° 85°

Return 6:00 pm 70° 78° 70° 78°

Sleep 10:00 pm 62° 82° 62° 82°

Occupied 1 8:00 am 70° 75° On

Unoccupied 1 10:00 pm 55° 85° Auto

Occupied 2* 12:00 am 70° 75° On

Unoccupied 2* 12:00 am 55° 85° Auto

* Period 2 is cancelled by default. If you activate it, the values

shown above are default settings.

Time

Table 6. Commercial Use Default Schedule.

Period Start Time Heat Cool Fan

Heat

(Mon-Fri)

Cool

(Mon-Fri)

Heat

(Sat-Sun)

Cool

(Sat-Sun)

• Touch Guide Me to create a schedule by answering simple questions.

• Touch I’ll do it myself to manually create a program schedule. See below.

• Touch View/Edit to view the full schedule and make a quick adjustment.

NOTE: To reduce costs, use the “Preset Energy-Saving

Schedules” on page 74.

3. Select the days to schedule, touch Next.

4. Touch Wake to set your Wake time for selected day(s).

Adjusting program schedules

1. Touch MENU.

Fig. 82.

2. Select Create/Edit Schedule.

Fig. 84.

5. Touch  or  to set Heat and Cool temperatures for the

Wake period, then touch Done.

Fig. 85.

Fig. 83.

68-0311—03 74

6. Touch other time periods (Leave, Return, Sleep) to set time and temperatures for each.

7. Touch Done to save and exit.

NOTE: Touch Delete Period to eliminate any unwanted

time period.

NOTE: Touch Fan Settings to customize fan settings for

any time period.

Page 75

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Switch To

Permanent Hold

Equipment Status

Overriding schedules: residential use

1. Touch  or  to adjust the temperature (right side of

screen) and the Hold Until time (left side). The schedule will resume when the Hold Until time expires.

Fig. 86.

2. Touch Switch to Permanent Hold to keep the same tem-

perature until you change it or resume the program schedule.

3. Touch Cancel Hold at any time to resume the program schedule.

Overriding schedules: commercial use

Touch or  to adjust the temperature. It will be maintained until the hold time you set.

• To change the hold time, touch the Hold Until arrow buttons. This time can be adjusted up to the maximum time set by the installer.

• Touch Override to use a pre-set occupied temperature if a person uses the room during an unoccupied period. The new temperature will be maintained for 1 hour and can be adjusted up to the maximum time set by the installer.

OVERRIDE

Fig. 88.

The programmed schedule will resume when the override timer expires. Touch Cancel Hold at any time to resume the program schedule.

Viewing equipment status

1. Touch MENU.

Fig. 87.

Fig. 89.

2. Select Equipment Status.

Fig. 90.

75 68-0311—03

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Done

Vacaon Mode

Done

Holiday / Event Scheduler

3. Touch  or  to view the status of all the equipment

your thermostat is controlling. Depending on how your thermostat was installed, the Equipment Status screen can report data about the following systems:

• Heating and cooling

•Fan

• Humidification

• Dehumidification

• Ventilation

• Maintenance reminders

• Thermostat information.

Fig. 91.

Setting vacation hold: residential use

This feature helps you save energy while you are away, and restores comfortable settings just before you return home.

1. Touch MENU.

4. Review your selections on the last display, and touch

Done to save your settings. Touch Back, then Cancel to ignore the changes.

Fig. 95.

Setting holiday/event schedules: commercial use

This feature helps you conserve energy when the workplace is unoccupied for special events and holidays.

1. Touch MENU.

Fig. 96.

2. Select Holiday/Event Scheduler.

Fig. 92.

2. Select Vacation Mode.

Fig. 93.

3. Touch  or  to select the date you leave, then touch

Next for further scheduling details, including times of day, temperature settings, return date, and return settings.

Fig. 94.

Fig. 97.

3. Select the item you want to schedule.

• Custom Events lets you set up other days for special schedules.

• US and Canadian Holiday options let you select from a list of holidays commonly observed in each country.

Fig. 98.

4. Make selections as prompted on each screen. For more

information, see next two pages.

5. Touch Done to save your settings.

68-0311—03 76

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Create a new event

Done

Setting custom events: commercial use

This feature lets you customize temperature settings to be maintained during a specific event. You can set up an event for a specific date or day in a month. The thermostat resumes normal scheduling after the event.

1. Select Custom events from the Holiday/Event Scheduler menu.

Fig. 99.

2. Select Create a new event.

4. Review the settings and touch Done to save them. Touch

Back, then Cancel to ignore the changes.

Fig. 102.

Setting holiday schedule: commercial use

This feature lets you customize temperature settings to be maintained on specified national holidays. The thermostat resumes normal scheduling between selected holidays.

1. Select US Holidays or Canadian Holidays from the Holiday/Event Scheduler menu.

2. Select Add/Edit Holidays. A list of national holidays is displayed.

Fig. 100.

3. Select Specific Date or Month/Weekday.

Fig. 101.

• For Specific Date, you are prompted to select the start date, settings, end date, and frequency for the event.

• For Month/Weekday, you are prompted to select the month, day of the week, week of the month, settings, length of event, and frequency of the event.

Fig. 103.

3. Touch the check box next to each holiday for which you

want to maintain specific settings, (Touch  or  to scroll through the holiday list.) then touch Next.

Set the holiday schedule for Occupied or Unoccupied temperatures, depending whether the building will be in use.

Fig. 104.

77 68-0311—03

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Holiday Mode

Done

Press to start

occupancy

4. Touch  or  to select the Heat and Cool temperatures.

Fig. 105.

5. Review the settings and touch Done to save them. Touch

Back, then Cancel to ignore the changes.

Setting holiday override: commercial use

This feature lets you customize temperature settings to be maintained from now until a specified date. The thermostat resumes normal scheduling on the date you select.

1. Touch MENU.

4. Review the settings and touch Done to save them. Touch

Back, then Cancel to ignore the changes.

Fig. 109.

NOTE: The cool temperature can only be set higher than

the unoccupied program setting and the heat temperature can only be set lower than the unoccupied program setting.

Initiating occupancy mode: commercial use

This feature keeps temperature at an energy-saving level until you touch Press to start occupancy. When you arrive, touch the button to maintain a comfortable temperature while the room is occupied.

Fig. 106.

2. Select Holiday Mode to display temperatures while you

are away on holiday.

Fig. 107.

3. Touch  or  to select the Heat and Cool temperatures,

then touch Next to select return date.

Fig. 108.

Fig. 110.

Touch the  or  buttons to set the temperature or the Hold Until time. The temperature is maintained until the time you set. Temperature returns to an energysaving level after the timer expires, or the “Occupied” period ends.

NOTE: This feature is available only when programmed

by the installer.

Remote setback: commercial use

During Occupied program periods, an occupancy sensor directs the thermostat to go to REMOTE SETBACK settings when the room is empty. If someone is in the room, it uses the Occupied program period settings. The thermostat ignores the occupancy sensor during Unoccupied program periods.

68-0311—03 78

If the thermostat is set up to be non-programmable, the sensor directs the thermostat to go to REMOTE SETBACK settings when the room is empty. If someone is in the room, then it follows the settings set by the user.

Page 79

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Humidiﬁcaon

Sengs

Dehumidiﬁcaon

Sengs

Depending on how your thermostat was installed, it may delay for up to 30 minutes before switching to REMOTE SETBACK settings. This delay allows the room to stay comfortable if the room is unoccupied for only a short time.

Adjusting humidification settings

1. Touch MENU and select Humidification.

Fig. 111.

2. Select Auto.

3. Move the slider bar to select humidity level.

or condensation on your windows. Use a higher number if indoor air seems too dry. To prevent frost/condensation on your windows during cold outdoor temperatures, poorly insulated windows require a lower Window Protection setting, which will limit how much your humidifier can run.

7. After you set the Window Protection setting, check for frost/condensation on your windows in the morning. If frost/condensation is present, adjust the Window Protection setting to the next lowest number and check for frost/ condensation on your windows the next morning. Continue to adjust the Window Protection setting to a lower number until frost/condensation is no longer present.

NOTE: The thermostat will not run the humidifier when

the indoor humidity has reached the “Window Limit” that is displayed on the screen.

NOTE: Window Protection is available only if an outdoor

air sensor is installed.

Adjusting dehumidification settings: residential use

This feature can control a dehumidifier or use your air conditioner to reduce humidity.

1. Touch MENU and select Dehumidification.

Fig. 112.

4. Touch More Settings if frost or condensation appears on

the windows. Use a lower number to prevent frost or condensation. Use a higher number if indoor air is too dry. Window Protection limits the amount of humidity to prevent frost or condensation on windows. See notes below.

Fig. 113.

5. Touch Done to save your settings. Touch Cancel to

ignore changes.

6. Window Protection is set on a scale from 1–10. A setting of 1 represents poorly insulated windows and a setting of 10 represents well insulated windows. A lower number automatically reduces the humidity to help prevent frost

Fig. 114.

2. Select Auto.

3. Move the slider bar to select humidity level.

Fig. 115.

4. Touch Done to save your settings. Touch Cancel to

ignore changes.

NOTE: If your air conditioner is used to control humidity,

the temperature may drop up to 3° F below your temperature setting until humidity reaches the desired level.

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Dehumidiﬁcaon

Sengs

Venlaon

Sengs

Seng:

Automac

Adjusting dehumidification settings: commercial use

This feature can control a dehumidifier or use your air conditioner to reduce humidity.

1. Touch MENU and select Dehumidification.

Fig. 116.

2. Select Auto.

3. Move slider bar to select humidity level.

4. Touch More Settings to set maintenance reminders and

NOTE: If set up for humidification in heat mode, the ven-

Fig. 119.

lockouts. Select Yes to prevent ventilation from running during the Sleep or Unoccupied (commercial) program periods or when outdoor conditions exceed values set by the installer.

tilator will turn on to remove excess humidity if 10% or more above your humidity setting.

Fig. 117.

4. Touch Done to save your settings. Touch Cancel to

ignore changes.

If your air conditioner is used to control humidity, the thermostat may use the following methods to maintain humidity:

• Cool from 1° to 5° F lower than your temperature setting.

• Run cooling for the minimum “on” time to reduce humidity.

• Run cooling and heating at the same time to reduce humidity without lowering the temperature.

Adjusting ventilation settings

1. Touch MENU, and select Ventilation.

Customizing screen color

You can customize the color of the thermostat screen to match your décor.

1. Touch Menu.

2. Touch Color Themes.

Fig. 120.

3. Select one of the predefined screen colors or select Custom to define your own screen color.

Fig. 118.

2. Touch Setting, then select:

• Auto: Ventilation runs as programmed by the installer.

• Off: Ventilation remains off unless turned on using the timer.

• On: Ventilation is always on.

3. Touch  or  to run ventilation temporarily. To turn it off,

set it to zero.

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Fig. 121.

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4. If you select a predefined screen color, check the left side of the screen to preview the color and touch Done to accept that selection.

5. If you select Custom, touch Next and follow the prompts on the screen to select the background color and font color.

Fig. 122.

7. Touch the arrows on the slider bars to adjust the color,

shading and brightness of the background color. View changes in the Preview area at the top of the screen. Touch Undo to restore the color you originally selected. Touch Next when finished.

Fig. 125.

8. Touch the arrows on the slider bars to adjust the color,

shading and brightness of the font color. View changes in the Preview area at the top of the screen. Touch Undo to restore the color you originally selected. Touch Next when finished.

Fig. 123.

6. Touch Make Additional Adjustments to make changes to your custom screen color or touch Accept Color Selections if you are satisfied with your custom screen

color.

Fig. 124.

Fig. 126.

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Preferences

Clean Screen

Yes

9. Touch Make Additional Adjustments to continue mak- ing changes, or touch Accept Color Selections when you are satisfied with the selected colors and then touch HOME.

Fig. 127.

2. Select an option and follow prompts:

• Reminders to change filters

• Display heat/cool diagnostic alerts

• Utility Schedule options

• Fahrenheit/Celsius display

• 12/24-hour clock display

• Backlight

• Language choice

• Scheduling options

• Adaptive Intelligent Recovery

• Restore default schedule

• Daylight saving time

Fig. 130.

3. Touch Done to save your settings. Touch Cancel to

ignore changes.

Fig. 128.

Setting preferences

Preference menu options let you select how the thermostat displays information or responds to certain situations.

1. Touch MENU and select Preferences.

Fig. 129.

Cleaning the thermostat screen

When you select the Clean Screen option, the screen is locked so you don’t accidentally change settings while you clean.

1. Touch MENU.

2. Select Clean Screen. A prompt asks if you want to clean

the screen for 30 seconds.

Fig. 131.

3. Touch Yes. A countdown timer displays elapsed time until

the screen is reactivated.

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Fig. 132.

NOTE: Do NOT spray any liquid directly on the thermo-

stat. Spray liquids onto a cloth, then use the damp cloth to clean the screen. Use water or household glass cleaner. Avoid abrasive cleansers.

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Security Sengs

Dealer Informaon

Adjusting security settings

You can adjust security options to prevent unauthorized changes to system settings.

1. Touch MENU and select Security Settings.

Fig. 133.

2. Select Change Lock Mode.

Change Lock Mode

Fig. 134.

Viewing dealer information

Check dealer information if you need to contact your installer for maintenance, repairs, or upgrades.

1. Touch MENU.

2. Select Dealer Information.

Fig. 136.

3. Touch Done to return to the menu.

3. Select an option and follow prompts:

• Unlocked: Full access allowed.

• Partially locked: Only temperature can be changed.

• Fully locked: No access allowed.

Fig. 135.

NOTE: If you choose to use a password for additional

security, write it here for reference:

Fig. 137.

Temporary Schedule Changes

Use the thermostat to set temporary schedule changes that impact the regular schedule for the heating/cooling system. This feature is useful if your daily schedule sometimes changes.

Select an option, then follow screen prompts to conserve energy while you’re away and maintain a comfortable climate after you return.

After the times you set, the normal program schedule will resume.

• Stay Home From Work: Ignores the “Away” period and keeps the temperature at a comfortable level throughout the day.

• Return Home Early: Shortens the “Away” period and applies evening temperature settings earlier than usual.

• Return Home Late: Extends the “Away” period, and applies evening temperature settings later than usual.

• Wake Up Early: Shortens the “Sleep” period and applies morning temperature settings earlier than usual.

• Stay Up Late: Delays the “Sleep” period to keep the temperature comfortable until you go to bed.

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1. Press MENU

2. Scroll to select TEMPORARY SCHEDULE

3. Select option, then follow screen prompts

NOTE: See also “Overriding schedules: residential use”

beginning on page 75.

2. Press On, then press Next.

Fig. 139.

3. Select the temperatures you would like to adjust based

on the Utility Schedule. Choose to create a cost-saving schedule for the heating system, the cooling system, or both.

4. When asked if you’d like to enter the Utility Schedule now, press Yes.

5. Indicate how many different price levels the Utility Schedule has, then press Next. At this and the following screens, you can customize how the system operates for up to four different price levels, based on local utility rates.

Utility Scheduling

This feature can help reduce fuel or electric expenses by changing indoor temperatures at certain times of the day when utility charges rise. For example, the system can be set to raise indoor temperature slightly in summer (or lower it in winter) during hours of peak usage when rates are higher.

1. Press MENU, then press Preferences, then press Utility Schedule Options.

Fig. 138.

Fig. 140.

6. Use the slider to set the warmest heating or coolest cool-

ing temperature allowed during the different price periods.

68-0311—03 84

Fig. 141.

7. Follow the on-screen prompts to set the days of the week

that will use the Utility Schedule, then press Next.

8. The thermostat will prompt you to enter information for additional price periods, and prompt you to review and save your Utility Schedule when complete.

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WAKE

COMPRESSOR SETPOINT

AUXILIARY HEAT SETPOINT

ROOM TEMPERATURE

M6406A

Advanced Features

ADAPTIVE INTELLIGENT RECOVERY (RESIDENTIAL USE ONLY)

Over time, the Prestige® thermostat “learns” how long it takes your system to reach your programmed temperature setting.

The thermostat turns on the heating/cooling system early and assures that the programmed temperature setting is reached at the programmed time regardless of weather conditions. For example, if the Wake program period is set to 6:00 am with a heat setting of 70 degrees, the heat will turn on before 6:00 am, so the temperature is 70 degrees at 6:00 am. The thermostat displays "In Recovery" when it turns the system on early.

Adaptive Intelligent Recovery® calculates the recovery ramp based on how far the room temperature is away from the temperature setting, previous equipment performance and weather history, allowing the thermostat to start recovery at the optimal time so it can reach the programmed temperature setting at the programmed time.

The Prestige® thermostat uses two recovery ramps when setup to control a heat pump system. One ramp for the compressor and one ramp for the auxiliary heat. Once the room temperature intersects the compressor ramp, the compressor turns on until the setpoint is reached. If the room temperature does not rise quickly enough and intersects the second ramp, the auxiliary heat turns on. It takes about one week for the thermostat to adjust to weather conditions, equipment performance and construction of the home. If the temperature setting is reached too early or too late, the ramp is adjusted for the next day's recovery. See Fig. 142.

PRE-OCCUPANCY PURGE (COMMERCIAL USE ONLY)

This feature turns on the fan 1 to 3 hours before each “occupied” time period, to provide a comfortable workplace when you arrive.

P + I CONTROL

A conventional mechanical or electronic thermostat does not control temperature precisely at setpoint. Typically there is an offset (droop) in the control point as the system load changes. Many factors contribute to offset including the switch differential, thermal lag, overshoot, cycle rates and system load.

The Prestige® thermostat however, works much differently than a conventional mechanical or electronic thermostat. The proprietary algorithm in the thermostat eliminates the factors causing offset (droop). This makes temperature control more accurate than the conventional mechanical or electronic thermostat. The temperature control algorithm is called proportional plus integral (P + I) control.

The thermostat sensor or a remote indoor sensor senses the current space temperature. The proportional error is calculated by comparing the sensed temperature to the setpoint temperature. The deviation from the setpoint is the proportional error.

The thermostat also determines integral error, which is a deviation based on the length of error time (how long the sensed room temperature has been away from the setpoint temperature). The sum of the two errors is the (P + I) error. The cycle rate used to reach and maintain the setpoint temperature is computed using the P + I control algorithm. The addition of the integral error is what differentiates the thermostat from many other mechanical and electronic thermostats. See Fig.

143.

Fig. 142.

DEHUMIDIFICATION AWAY MODE

Your system can be set to control indoor climate while your home is vacant during the humid season. Before you leave, touch MENU, then select Dehumidification Away Mode. Temperature and humidity will be kept at levels that protect your home and possessions. When you return, touch Cancel to resume normal operation.

COMPRESSOR PROTECTION

The thermostat keeps the compressor off for a few minutes before restarting, to prevent equipment damage. During this “off” time, the message “waiting for equipment” is displayed on screen.

THERMOSTAT COOL SETPOINT

PROPORTIONAL COOL CONTROL POINT

P+I CONTROL POINT

TEMPERATURE

THERMOSTAT HEAT SETPOINT

100 50 0 50 100

PROPORTIONAL HEAT CONTROL POINT

HEATING

COOLING

PERCENT LOAD

Fig. 143.

M4414

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Installer Opons

INDOOR

Temperature reading depends on location of sensor

45% Humidity

Humidity reading depends on location of sensor.

Installer options

Installer Options require a password and should only be changed by a qualified technician.

To prevent unintended changes or damage to your equipment, do not change these options yourself.

Using the humidity display

In some circumstances, the humidity displayed on the Home screen may not match humidity near the thermostat.

Some systems are set up to use two sensors, one to control humidification, the other for dehumidification. These sensors are often installed in different locations.

Depending on how your thermostat was installed, the thermostat Home screen will display humidity readings from only one sensor.

Fig. 144.

Using the temperature display

In some circumstances, the temperature displayed on the Home screen may not match the temperature near the thermostat.

If your system is set up to use remote indoor sensors, it may be reading a sensor in another location.

Fig. 145.

Fig. 146.

UNIVERSAL OUTPUTS (U1, U2, U3)

U1, U2, U3 are universal outputs that can be setup to control IAQ equipment and a stage of heating or cooling in the Installer Setup. Setup options are listed below. See “THX9321 Thermostat Wiring Diagrams Using Universal Relays to Control Heating or Cooling” beginning on page 142 for more information.

Universal Output Options

THX9421 with Equipment Interface Module (U1, U2, U3):

• Humidification (ISU 8030)

• Dehumidification (ISU 9040)

• Ventilation (ISU 10020)

• Cool Stage 3 (ISU 2080)

• Cool Stage 4 (ISU 2090)

• Geothermal Radiant Heat (ISU 2030, 2040)

THX9321 Thermostat Only (U1, U2)

• Humidification (ISU 8030)

• Dehumidification (ISU 9040)

• Ventilation (ISU 10020)

• Cool Stage 3 (ISU 2080)

• Cool Stage 4 (ISU 2090)

• Conventional Heat Stage 3 (ISU 2100, 2140)

• Backup Heat Stage 2 for Heat Pumps (ISU 2170)

• Geothermal Radiant Heat (ISU 2030, 2040)

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RUN TIME

M31489

DELTA T

MINIMIUM DELTA T LIMIT

RUN TIME WHEN THERMOSTAT COMPARES DELTA T TO THE MINIMUM AND MAXIMUM DELTA T LIMITS

DELTA T NOT STABLE DELTA T STABLE

DELTA T BEGINS TO STABILIZE

MAXIMUM DELTA T LIMIT

UNIVERSAL INPUTS (S1, S2, S3, S4)

S1, S2, S3, and S4 are universal inputs that can be setup to work with a sensor or dry contact device in the Installer Setup. Setup options and compatible sensors are listed below. See wiring diagrams on page 96 and page 154.

Universal Input Options

Indoor Air Sensor (ISU 5000)

• C7189U1005 (10K)

• C7772A1004 (20K)

• C7772A1012 (20K)

• TR21 (20K)

• TR21-A (10K)

Outdoor Air Sensor (ISU 5000)

• C7089U1006 (10K)

Discharge/Return Air Sensors (ISU 5000)

• C7735A1000 (10k)

• C7770A1006 (20K)

• C7041 (20K)

Occupancy Sensor for Remote Setback (ISU 6000)

• WSK-24

Dry Contact Alerts (ISU 6000)

• Low Voltage Dry Contact Device

Before You Set Up Delta T Diagnostics

Refer to the information below for tips on installation and setup of Delta T Diagnostics.

1. Refer to Fig. 10–14 for the placement of the Discharge and Return Air Sensors.

2. In gas or oil forced air systems, Delta T will continue to rise for several minutes even after Delta T begins to stabilize. Be sure the Maximum Delta T Limit is set higher than the expected stable Delta T. See Fig. 147.

NOTE: S1, S2, S3, and S4 terminals are only available on

ALERTS AND DIAGNOSTICS

The thermostat uses alerts and diagnostics to provide greater comfort and efficiency. Alerts and diagnostics can notify customers when maintenance or service is needed, and display your contact information to make it easy for them to reach you.

Delta T Diagnostics

If discharge and return air sensors are installed, the thermostat can track system performance over time. It measures this as “Delta T.” The thermostat monitors Delta T and displays an alert on the home screen when the system exceeds the limits you set.

Delta T Diagnostics tells you if the system is performing above or below expected standards which would normally go unnoticed, and may cause unnecessary energy use. It can also detect and warn about problems early, before heating or cooling equipment fails.

The thermostat will measure and record Delta T of the system for each stage you test. This information can be used to set the proper Delta T fault limits of the system. When the system operates outside those limits multiple times (see “Advanced Options for Delta T Diagnostics” beginning on page 90), an alert is recorded in the log. If configured to do so, the system will then display an alert to the homeowner, along with your contact information.

the Equipment Interface Module (EIM).

Fig. 147.

3. Delta T can be affected by indoor and outdoor conditions

for heat pumps and cooling systems. Consider the total range of normal performance when setting the Delta T Limits.

For example, in cooling, you might have a Delta T of 20 °F when the outdoor humidity is 50% and a Delta T of 16 °F when the outdoor humidity is 85%.

You can either set Limits further apart and monitor Delta T during all indoor and outdoor conditions or set Limits closer together and turn off diagnostics during certain indoor and outdoor conditions (see “Advanced Options for Delta T Diagnostics” beginning on page 90).

For example, you can set limits closer together and then turn off diagnostics when outdoor temperature is above 90 degrees and outdoor humidity is above 85%.

4. Verify the filter is clean and all the registers are open before running an equipment test.

5. Select a Run Time when Delta T begins to stabilize during the equipment test.

6. Set Minimum and Maximum Delta T Limits based on what you consider to be unacceptable performance from the heating and cooling equipment.

NOTE: When the system operates below the Minimum

Limit or above the Maximum Limit multiple times (Table 7), an alert is recorded in the log. If configured to do so, the thermostat will display an alert to the user, along with your contact information.

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7. Delta T Diagnostics is only for non-zoned forced air systems.

8. The thermostat does not provide Heat or Cool Delta T Diagnostics when it is set to control an Economizer module (ISU 2220).

9. The thermostat cannot be setup for Heat Delta T Diagnostics when the thermostat is used with an external fossil fuel kit (ISU 2190).

Setting up Alerts and Diagnostics

1. Set up the Return and Discharge Air Sensors by

selecting the check boxes on the screen. These sensors are used to measure Delta T.

Fig. 148.

3. Select the Discharge and Return Air Sensor Type (10K).

IMPORTANT

10K sensors must be used for Delta T Diagnostics.

Fig. 150.

4. Turn on the Heat and Cool Delta T Diagnostics. Default

is On.

2. Select the terminals that are wired to the Discharge and Return Air Sensors (terminals S1, S2, S3, or S4 at the EIM).

IMPORTANT

Be sure to select the correct terminals for the discharge and return air sensors. For example, if the return air sensor is wired to S1, select S1 (see Fig.

149) for the return air sensor.

Fig. 149.

Fig. 151.

Fig. 152.

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5. For Air-to-Air Heat Pumps, press the up/down arrows to set the maximum time duration of a defrost cycle. Default is 10 minutes. Delta T is not monitored during a defrost cycle. Check the heat pump documentation for the defrost cycle time.

Fig. 153.

6. When you have completed Installer Setup (see “Installer

Options” beginning on page 21), you will be asked to finish setting up Diagnostics.

4. Press Set Up Diagnostics.

Fig. 155.

5. Proceed to “Run a Test for Each Stage”.

Run a Test for Each Stage

Follow these steps to run a test for each stage in the HVAC system.

1. Turn on stage 1.

Fig. 154.

7. If you press Set Up Diagnostics, you will enter the

Equipment Test. See “Run a Test for Each Stage” beginning on page 89.

8. If you press I’ll do it later, you will be reminded to finish setting up diagnostics the next time you exit installer setup. You can also finish setting up diagnostics by following the procedure in “If You Decide to Set Up Diagnostics Later”.

After Delta T Diagnostics Setup is complete, the thermostat will detect typical failures such as no heating or no cooling and performance related issues that are typically caused by a dirty air filter, blocked registers, loss of refrigerant, dirty a-coil, frozen a-coil, cracked heat exchanger, dirty burners, etc.

If You Decide to Set Up Diagnostics Later

When you are ready to set up diagnostics, follow these steps:

1. From the Home screen, press MENU.

2. Scroll down and press Installer Options.

3. Enter the passcode and press Done (see Note).

NOTE: The passcode is the date code printed on the

back of the thermostat or press MENU > EQUIPMENT STATUS to find the date code.

Fig. 156.

2. For each stage you test, wait until Delta T begins to sta-

bilize, then turn on the next stage (if present). See Fig. 157 for an example.

Fig. 157.

3. Press Next Step after Delta T stabilizes for the last stage.

The thermostat saves the Delta T and Run Time Data for each stage you test and is displayed on the next screen.

NOTE: The thermostat only saves test data for stages

that run 1 minute or longer.

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Set Delta T Limits

1. Press Stage 1 to set the limits and run time (see Fig.

158). Use the saved test data located in the upper right corner of the screen to set the Delta T Minimum and Maximum Limits and the Run Time (see Fig. 159).

Fig. 158.

2. Press the up or down arrows to set the Minimum and

Maximum Limits and the Run Time.

Fig. 159.

3. Set appropriate Minimum and Maximum Delta T Limits

based on the reading from the equipment test and what you consider to be unacceptable performance from the heating and cooling equipment.

4. When setting the run time, select a setting based on when Delta T began to stabilize during the equipment test. In the example shown in Fig. 157 and 159, Delta T began to stabilize around 10-11 minutes.

5. Set the limits and run time for all stages of cooling using steps 1–4 above.

6. Repeat steps 1–5 above for Heating.

After Delta T Diagnostics Setup is Complete

The thermostat will measure Delta T after the specified run time, and compare Delta T to the minimum and maximum limits for each valid cycle. If the system operates below the minimum limit or above the maximum limit multiple times (see Table 7), an alert is recorded in the Alerts Log. If configured to do so, an alert is displayed to the user (Display Delta T Alerts to User, ISU 13190). The user is alerted by default. For example, if 10 of the last 15 cycles have the same fault, an alert is logged and the user is alerted.

Advanced Options for Delta T Diagnostics

To set Advanced Options for Delta T Diagnostics, select Yes for ISU 13015.Then the following advanced options are displayed:

• Delta T Alert Sensitivity (ISU 13180; Default: 3)

• Display Delta T Alerts to User (ISU 13190; Default: Yes)

• Allow Delta T Diagnostics: — during humidification (ISU 13020; Default: Yes) — during dehumidification (ISU 13030; Default: Yes*) — during ventilation (ISU 13040; Default: Yes) — only when indoor temperature is within a certain range

(ISUs 13050, 13090, 13130; Default: Always)

— only when indoor humidity is within a certain range

(ISUs 13060,13100, 13140; Default: Always)

— only when outdoor temperature is within a certain range

(ISUs 13070, 13110, 13150; Default: Always)

— only when outdoor humidity is within a certain range

(ISUs 13080, 13120, 13160; Default: Always)

* Default is Yes for Dehumidifiers and A/C with High Speed

Fan. The thermostat does NOT allow Delta T diagnostics during dehumidification if it is setup for A/C with Low Speed Fan, Hot Gas Bypass, or Reheat.

The Delta T Alert Sensitivity is set on a scale of 1–5 in ISU 13180 (1 is the least sensitive; 5 is the most sensitive):

Table 7. Delta T Alert Sensitivity (ISU 13180).

Setting Alert is logged and user is alerted if

1 10 of the last 15 valid cycles have the same fault, or

2 10 of the last 15 valid cycles have the same fault, or

3 (Default)

4 5 of the last 5 valid cycles have the same fault, or

5 3 of the last 5 valid cycles have the same fault, or

By default, Delta T alerts are displayed to the user, but can be turned off and on in ISU 13190.

25 of the last 30 valid cycles have the same fault.

20 of the last 30 valid cycles have the same fault.

5 of the last 5 valid cycles have the same fault, or 10 of the last 15 valid cycles have the same fault, or 15 of the last 30 valid cycles have the same fault.

8 of the last 15 valid cycles have the same fault, or 15 of the last 30 valid cycles have the same fault.

8 of the last 15 valid cycles have the same fault, or 10 of the last 30 valid cycles have the same fault.

Delta T Alerts

This tells you if the system is performing above or below expected standards which would normally go unnoticed, and may cause unnecessary energy use. It can also detect and warn about problems early, before heating or cooling equipment fails.

There are three alerts each for the heating and cooling system. They occur when:

• the system is not operating

NOTE: The thermostat displays an alert when the sys-

tem does not reach a Delta T of 5 F after the

• the system is operating below the minimum Delta T limit

• the system is operating above the maximum Delta T limit

Delta T Alerts are displayed for basic failures including no heating or no cooling that may be related to bad igniter, bad flame sensor, bad gas valve, bad draft motor, bad blower, bad contactor, bad startup capacitor, dead compressor, etc.

thermostat calls for a reasonable period of time.

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Delta T Alerts are also displayed for performance related issues such as dirty air filter, blocked registers, loss of refrigerant, dirty a-coil, frozen a-coil, cracked heat exchanger, dirty burners, burners need adjustment, etc.

Alerts are displayed to the user on the home screen. See Fig. 160 for an example.

Fig. 160.

When the user presses the alert for more information, the Notification screen is displayed, prompting them to perform some basic troubleshooting and, if the problem persists, contact their dealer. See Fig. 161 as an example.

installed and provide an option to the user to turn off diagnostics temporarily while power is interrupted by the utility company. Diagnostics can be turned off for 1-14 days.

Fig. 162.

Fig. 161.

Alerts are also recorded in the Alerts Log. See “Data Logs” beginning on page 91.

Delta T Alerts and Utility Saver Switches

For systems that might be interrupted by a utility saver switch (conventional cooling and heat pumps in the heat and cool mode), the thermostat will ask if a utility saver switch is

Fig. 163.

Data Logs

The Data Logs collect system information that can help point a service technician in the right direction when troubleshooting.

When accessing the Data Logs, the installer can turn off each log, delete current log entries, and save Data Logs to a memory stick via the USB port. See “Using the Data Logs” beginning on page 94 and “To save a Data Log to a memory stick” beginning on page 95 for more information.

Data Logs include the Alerts Log, User Interactions Log, and Performance Logs.

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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. This allows the service technician to dismiss alerts for problems that have been corrected, and prevent unnecessary callbacks.

Fig. 164.

Fig. 167.

The Alerts Log contains information about the alert and system information. See Fig. 165–170 as an example.

Fig. 165.

Fig. 168.

Fig. 169.

Fig. 166.

68-0311—03 92

Fig. 170.

The Alerts Log can include:

• The alert name and description.

• System details at the time of the alert (Delta T, thermostat settings, heat/cool stages on, status of IAQ equipment, etc.)

• The alert message that is displayed to the user.

• The alert status (snoozed, dismissed, recovered)

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User Interactions Log

The User Interactions Log can help a service technician save time by determining if the issue is related to a system problem or an accidental user error.

The User Interactions Log records the date and time for most changes made by the user, whether made at the thermostat or from a remote location (RedLINK Internet Gateway, Portable Comfort Control, etc.). The log saves the most recent 250 user changes, including:

• Indoor Air Quality Settings

• Maintenance Reminders

• Temperature Settings

• System/Fan Mode

• Alerts (snoozed or dismissed)

• Installer Setup

• Date/Time

Performance Logs

NOTE: Only applies to THX9421 Thermostat with an

Equipment Interface Module.

The Performance Log allows the service technician to quickly check system performance over time to determine if the equipment is operating as expected or if it requires servicing.

The thermostat contains the following logs:

• Cooling Performance Log

• Heating Performance Log

• Emergency Heat Performance Log

• Run Time by Equipment Type

• Indoor and Outdoor Conditions Log

The Performance Log records the following information:

• Minimum and Maximum Delta T

• Minimum and Maximum Discharge Temperature

• Minimum and Maximum Return Temperature

• Minimum and Maximum Outdoor Temperature and Humidity

• Minimum and Maximum Indoor Temperature and Humidity

• Run Time of Heating and Cooling per stage

Fig. 172.

You have the option to view this data in 4 different time periods:

• Hourly - saves data for the last 8 days.

• Daily - saves data for the last 15 days.

• Weekly - saves data for the last 8 weeks.

• Monthly - saves data for the last 25 months.

NOTES:

— Data is collected in the Emergency Heat Perfor-

mance Log only if the thermostat was set to the “Emergency Heat” mode.

— The Run Time by Equipment Type Log contains

the Total Run Time of each equipment type since the last time it was reset.

— The Minimum and Maximum Delta T, Discharge

Temperature and Return Temperature are only shown in the log if the equipment ran for at least 5 minutes during a cycle. If the equipment ran for less than 5 minutes in every cycle during a 1 hour period, the log will display “--°.”

— For Air to Air Heat Pumps, the Minimum Delta T

and Minimum Discharge Temperatures will include defrost cycles in the log.

Fig. 171.

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Using the Data Logs

TO ACCESS THE DATA LOGS

1. From the Home screen, press Menu.

2. Scroll down and press Installer Options.

3. Enter the password (date code) and press Done.

4. Press Data Logs.

5. Press the log you want to view.

Fig. 173.

SEARCHING THE USER INTERACTIONS LOG

You can search the User Interactions Log for changes made by the user.

1. Follow the steps in “Using the Data Logs” beginning on page 94. Press User Interactions Log.

Using the Performance Logs

1. Follow the steps in “Using the Data Logs” on page 94.

Press Performance Logs.

Fig. 176.

2. Select the desired log to view performance history.

Fig. 174.

2. Press Previous Day or Next Day to view user interactions

by date.

3. Press Search by Event to search for specific user interactions.

Fig. 177.

3. For example, the Heating Performance Log displays the

Total Run Time of each heating stage since the last time it was reset. Press on the desired stages to view Delta T, Discharge Temperature, Return Temperature, Outdoor Temperature/Humidity, Indoor Temperature/Humidity and additional Run Time data.

Fig. 178.

Fig. 175.

4. Select the desired user interactions and press Done.

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4. Select the desired time period at the top of the screen (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. Use the Left/Right arrows to scroll to a desired hour, day, week or month.

Fig. 179.

5. From the Performance Log menu, press Run Time by

Equipment Type. This screen displays the Total Run Time of each equipment type since the last time it was reset. To reset the run time, press Reset Equipment Run Time Totals. Press on the desired equipment type to view additional run time data.

4. Select the log you want to save to USB.

Fig. 182.

5. When you insert the memory stick into a computer, you

can view the data logs in a spreadsheet.

ADVANCED DATA LOG OPTIONS

You can turn the Data Logs off or Reset them from this screen.

1. Follow the steps in “Using the Data Logs” beginning on page 94. Press the Advanced Options button.

Fig. 180.

TO SAVE A DATA LOG TO A MEMORY STICK

1. Insert memory stick in thermostat USB port.

2. The USB options will be displayed.

Fig. 181.

3. Press Data Logs.

Fig. 183.

2. Press Reset and then press Done.

Dry Contact Alerts

A Dry Contact device such as a wet switch can be connected to the S1, S2, S3, or S4 terminals at the Equipment Interface Module.

When the dry contact device detects a problem, the thermostat displays an alert on the home screen along with the dealer information. See Fig. 184 as an example.

Fig. 184.

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WARNING

MULTIPLE DRY CONTACT DEVICES

ON ONE SET OF TERMINALS

EIM

ONE DRY CONTACT DEVICE

When the user presses the alert for more info, the Notification screen is displayed, prompting them to contact their dealer. See Fig. 185 as an example.

Fig. 185.

The following dry contact alerts are available.

Full Drain Pan Alert

When the dry contact device detects that the condensate drain pan is full, the thermostat provides an alert to the user.

NOTE: If you want the compressor to turn off when the

drain pan is full, wire the system so the dry contact device turns off the compressor when the drain pan is full.

When the dry contact device detects a problem with the system (for example, smoke detection), the thermostat will not call for heating, cooling, fan or IAQ equipment until the dry contact is deactivated or the feature is unconfigured at the thermostat.

Service Needed Alert

When the dry contact device detects an issue that requires service, the thermostat provides an alert to the user.

Fan Failure Alert

The Fan Failure Alert protects the equipment when there is no airflow. When the dry contact device (for example, sail switch) detects no air flow for 5 minutes after a call for forced air heat, cool, or fan, the thermostat provides an alert to the user indicating that the system was shut down due to a lack of airflow.

The thermostat will call for the fan and lockout all other equipment until the dry contact device senses air flow again or the feature is unconfigured at the thermostat.

Custom Alert

Allows the dealer to enter a custom alert to be displayed when a dry contact device is activated. For example, a float switch can detect when your sump pump is not working.

Set Up the Dry Contact Alerts

Dirty Filter Alert

When the dry contact device detects a dirty air filter (pressure drop across the filter), the thermostat provides an alert to the user to replace the filter.

Water Leak Alert

When the dry contact device detects a water leak, the thermostat provides an alert to the user.

System Shutdown Alert

When the dry contact device detects a critical problem with the system, the thermostat provides an alert to the user indicating that the system was shut down.

Equipment Damage Hazard.

Do not apply power to S1, S2, S3, or S4 terminals. Do not connect a temperature sensor to the S1, S2, S3, or S4 terminals if setup for a dry contact device.

IMPORTANT

The dry contact device must be rated for low voltage.

NOTE: You can connect multiple Dry Contact devices in

parallel to the S1, S2, S3, or S4 terminals.

You can connect the S1, S2, S3, or S4 terminals on the EIM to a dry contact device to display an alert. Dry contact alerts include Full Drain Pan, Dirty Filter, Water Leak, System Shutdown, Service Needed, Fan Failure and Custom Alert. A dry contact device can be normally open (shown in diagram) or normally closed.

ONE DRY CONTACT DEVICE

EIM

MULTIPLE DRY CONTACT DEVICES

ON ONE SET OF TERMINALS

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Fig. 186. Wiring dry contact devices.

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ WITH EIM

Home screen

Installer setup screen

User notification screen

Installer setup screen

1. Wire the dry contact device to S1, S2, S3, or S4 terminals at the EIM.

2. Enter Installer Setup (see “Installer Options” beginning on page 21).

3. Dry Contacts are selected at ISU 6000. Select the appropriate Dry Contact(s) and press Next.

Fig. 187.

4. Select the terminals wired to the Dry Contact device, and

press Next.

6. If you are creating a custom alert, type the alert name into the text box and press Done. The alert name is what appears on the Home screen when the alert is detected. See Fig. 190. You can edit or confirm the alert name after you enter it.

Fig. 190.

7. Type the custom alert message into the text box and

press Done. The custom alert message appears when the orange alert button is pressed. See Fig. 191. You can edit or confirm the alert message after you enter it.

Fig. 188.

5. Select Normally Open or Normally Closed, and press

Next.

NOTE: For example, if a wet switch is normally open, it

will close when the device detects water. If the wet switch is normally closed, it will open when the device detects water. Refer to the instructions packed with the dry contact device to determine if it is normally open or normally closed.

Fig. 189.

Fig. 191.

8. Repeat steps 4–5 for the other Dry Contact, if necessary.

Staging Control

Differential Between All Stages

The thermostat provides Differential settings between all stages. The equipment changes stages based on how far the indoor temperature is from the setpoint. Differential settings provide a way to balance comfort and conservation.

Heat Differential

The indoor temperature must drop to the selected differential setting before the thermostat will turn on the stage of heating. For example, if stage 2 is set to 2 °F (1.0 °C), the indoor temperature must be 2 °F (1.0 °C) away from the setpoint before stage 2 turns on. When set to Comfort, the thermostat will use the stage of heating as needed to keep the indoor temperature within 1 °F (0.5 °C) degree of the setpoint. The thermostat turns on stage 2 when the capacity on stage 1 reaches 90%.

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Cool Differential

The indoor temperature must rise to the selected differential setting before the thermostat turns on the stage of cooling. For example, if stage 2 is set to 2 °F (1.0 °C), the indoor temperature must be 2 °F (1.0 °C) away from the setpoint before stage 2 turns on. When set to Comfort, the thermostat uses the stage cooling as needed to keep the indoor temperature within 1 °F (0.5 °C) degree of the setpoint. The thermostat turns on stage 2 (or the next stage) when the capacity on stage 1 reaches 90%.

TO CHANGE DIFFERENTIAL SETTINGS

1. Select Advanced Options to view/adjust differentials

between all stages.

Fig. 192.

2. Default is Comfort. Adjust differentials as needed.

NORMAL OPERATION

When the Backup Heat Differential is set to Comfort, the thermostat uses backup heat as needed to keep the indoor temperature within 1 °F (0.5 °C) of the setpoint.

When the Backup Heat Differential is set to 2 °F or higher, backup heat is not used unless the indoor temperature drops to the Backup Heat Differential setting or the Backup Heat Upstage Timer expires, whichever occurs first. The upstage timer starts when the highest stage of the previous equipment type turns on.

MANUAL TEMPERATURE CHANGE

When the Backup Heat Differential is set to Comfort, the thermostat uses backup heat as needed to keep the indoor temperature within 1 °F (0.5 °C) of the setpoint.

When the Backup Heat Differential is set to 2 °F or higher, if the primary heat is making progress as expected, backup heat will not be used to reach the new setpoint. Set to a higher number to use less backup heat (a greater difference between the current indoor temperature and the new setpoint is required to turn on backup heat). See notes below.

PROGRAMMED RECOVERY

If the primary heat is making progress as expected, backup heat will not be used to reach the setpoint of the next program period. Backup heat is always restricted during a programmed recovery when the Adaptive Intelligent Recovery feature is used. See note below.

NOTE: During a programmed recovery (or when the tem-

perature setpoint is changed by the user), the thermostat waits to turn on the backup heat depending on system performance, load conditions and how many degrees the temperature setpoint is changed. Backup heat will be used ONLY when the temperature is not rising quickly enough to reach the setpoint in a reasonable time.

Fig. 193.

Backup Heat Differential (Droop)

A Backup Heat Differential is available for any system with 2 heating types. For example:

• Heat Pumps with any type of Backup Heat

• Radiant Heat with any type of Backup Heat

• Hot Water Fan Coil with any type of Backup Heat

The Backup Heat Differential restricts backup heat during the following conditions:

• Normal Operation

• Manual Setpoint Changes

The options are:

• Comfort – keeps temperature within 1 degree of the setpoint.

• 2 to 15 °F – Backup heat is not used unless the indoor temperature drops to the selected Backup Heat Differential. For example, if the Backup Heat differential is set to 2 °F (1.0 °C), the indoor temperature must be 2 °F (1.0 °C) away from the setpoint before the backup heat turns on.

NOTE: If the backup heat was used in the last 2 hours

because the primary heat was not able to maintain the setpoint, the thermostat may turn on the backup heat earlier when the user raises the setpoint. This does NOT apply to heat pumps with fossil fuel backup heat.

TO CHANGE BACKUP HEAT DIFFERENTIAL (DROOP) SETTINGS

1. Select Advanced Options or Basic Options to view/adjust

Backup Heat Differential settings.

Fig. 194.

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2. Default is Comfort. Adjust differentials as needed.

Fig. 195.

Backup Heat Upstage Timer

The Backup Heat Upstage Timer is available for any system with 2 heating types and the Backup Heat Differential is set to 2 °F (1.0 °C) or higher.

Backup heat is not used unless the indoor temperature drops to the Backup Heat Differential setting or the Backup Heat Upstage Timer expires, whichever occurs first. The upstage timer starts when the highest stage of the previous equipment type turns on.

Backup Heat Upstage Timer options are Off, 30 minutes to 16 hours. Default is Off.

Multistage Control

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.

Select Yes to turn on this feature. Default is No.

Fig. 197.

Fig. 196.

Fig. 198.

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Heat pump only

Heat pump with backup heat as needed *

Backup heat only

Heat pump only

Heat pump or backup heat operates *

Backup heat only

Outdoor temperatureOutdoor temperature

Backup heat lockout

Compressor lockout

* No backup heat unless indoor temperature drops to selected Backup Heat Differential setting, or Backup Heat

Upstage Timer expires. Heat pump stays ON when backup heat turns on.

* No backup heat unless indoor temperature drops to selected Backup Heat Differential setting, or Backup

Heat Upstage Timer expires. Heat pump turns OFF when backup heat turns on.

Backup heat allowed to run with heat pump (see table below)

Backup heat NOT allowed to run with heat pump (see table below)

HEAT PUMP AND BACKUP HEAT OPERATION

Heat pump with outdoor temperature lockouts

Outdoor temperature lockouts are optional. See Installer Setup options (ISU 3120).

Table 8. Heat Pump and Backup Heat Operation.

Backup Heat Type Backup Heat Operation Backup Heat Fan Operation

Electric forced air Allowed to run with heat pump Thermostat controls fan

Gas or oil forced air NOT allowed to run with heat pump Equipment controls fan

Hot water radiant heat Allowed to run with heat pump [n/a]

Hot water fan coil Selectable in installer setup Thermostat controls fan

Other Selectable in installer setup Selectable in installer setup

Geothermal Radiant Heat

The thermostat can be setup to control Geothermal Radiant Heat, Geothermal Forced Air Heat and Backup Heat, all from one thermostat. The thermostat stages the equipment starting with the Geothermal Radiant Heat followed by Geothermal Forced Air Heat and then Backup Heat as needed to maintain the desired temperature. The thermostat allows you to set differential temperature settings between each stage if you want the equipment to stage a certain way (see ISU 3030 to ISU 3090, page 31). For additional wiring diagrams, see page 141.

NOTE: To turn off Radiant Heat during the shoulder sea-

68-0311—03 100

sons, install an outdoor reset control and connect to the Radiant Heat or switch the thermostat to Emergency Heat mode.

Electric Backup Heat (Backup Heat Allowed to Run with Heat Pump)

HEAT MODE

The thermostat turns on Backup Heat only when the indoor temperature drops to the selected Backup Heat Differential setting or the Backup Heat Upstage Timer expires (whichever occurs first). Geothermal Radiant Heat and Geothermal Forced Air Heat stay on when the Backup Heat turns on.

EMERGENCY HEAT MODE

The thermostat turns on the Backup Heat to maintain the desired temperature setting. Geothermal Radiant Heat and Geothermal Forced Air Heat are not used.

Honeywell THX9321 Prestige, THX9421 Prestige Product Information Sheet

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 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

INSTALLER TESTS

Accessing Installer Tests

Using the Equipment Test

Using the Wireless Signal Strength Test

Mounting Optional Accessories

OPERATION

Setting the time/date

Setting system mode

Setting the fan

Preset Energy-Saving Schedules

Adjusting program schedules

Overriding schedules: residential use

Overriding schedules: commercial use

Viewing equipment status

Setting vacation hold: residential use

Setting holiday/event schedules: commercial use

Setting custom events: commercial use

Setting holiday schedule: commercial use

Setting holiday override: commercial use

Initiating occupancy mode: commercial use

Remote setback: commercial use

Adjusting humidification settings

Adjusting dehumidification settings: residential use

Adjusting dehumidification settings: commercial use

Adjusting ventilation settings

Customizing screen color

Setting preferences

Cleaning the thermostat screen

Adjusting security settings

Viewing dealer information

Advanced Features

Installer options

Using the humidity display

Using the temperature display

UNIVERSAL OUTPUTS (U1, U2, U3)

UNIVERSAL INPUTS (S1, S2, S3, S4)

Before You Set Up Delta T Diagnostics

ALERTS AND DIAGNOSTICS

Delta T Diagnostics

Setting up Alerts and Diagnostics

Delta T Alerts

Delta T Alerts and Utility Saver Switches

Data Logs

Dry Contact Alerts

Set Up the Dry Contact Alerts

Staging Control

HEAT PUMP AND BACKUP HEAT OPERATION

Heat pump with outdoor temperature lockouts

Geothermal Radiant Heat