Honeywell THX9421, THX9321 User Manual

TM

THX9321 Prestige® 2.0 and THX9421 Prestige® IAQ 2.0

with EIM

• Delta T Alerts and Diagnostics

Alerts give customers a sense of security while also enabling 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 EIM.

• Delta T Installer Test

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

APPLICATION

The Prestige 2.0 and Prestige IAQ 2.0 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, outdoor temperature or a dry contact input will alert customers with instructions to contact you for assistance.

• Universal Inputs – S1 and S2

Assignable inputs allow you to configure 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 EIM.

• User Interaction Log

The interaction log stores history of thermostat setting changes including temperature, system and installer setup. You can use the interaction log to save time by determining if the issue is a system error or an accidental user error.

• Configurable for Residential and Light Commercial Applications

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

• USB Port for Quick Installer Setup

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

• Selectable Sensors

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

PRODUCT DATA

68-0311-01

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

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.

68-0311—01 2

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Ramp Rates .................................................... 89

Custom Names .............................................. 90

Remote Setback ............................................. 90

Economizer and Time of Day (TOD) Operation 91

Pre-Occupancy Purge ................................... 92

Staging Control .............................................. 59

Optional Accessories .......................... 94

Troubleshooting ................................... 124

Wiring ................................................... 102

EIM Wiring Diagrams ..................................... 104

Geothermal Radiant Heat .............................. 62

THX9321 Thermostat Wiring Diagrams ....... 107

THX9321 Thermostat Wiring Diagrams Using Universal Relays to Control Heating or Cooling 108 Wiring guide — IAQ Equipment (EIM or Thermo-

stat) ................................................................. 115

Economizer Module Wiring Diagrams ......... 116

Wiring C7089U1006 Outdoor Sensor ........... 118

Wiring guide — Wired Indoor Sensors ........ 119

Regulatory Information ....................... 124

SPECIFICATIONS

Accessories and Replacement Parts:

Item Part Number

Prestige 2.0 Thermostat THX9321R5030

Prestige IAQ 2.0 Thermostat THX9421R5013

Equipment Interface Module THM5421R1013

Wireless Adapter for TrueSTEAM and Tr ue ZO N E

RedLINK Internet Gateway THM6000R1002

Portable Comfort Control REM5000R1001

Entry / Exit Remote REM1000R1003

Vent Boost Remote HVC20A1000

Occupancy Sensor for Remote Setback WSK-24

Wireless Outdoor Sensor C7089R1013

Wireless Indoor Sensor C7189R1004

Wired Outdoor Sensor (10K ohm NTC Negative Temperature Coefficient)

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

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

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

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

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

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

Cover Plate (covers marks left by old thermostats)

Battery Pack (for demo use only) THP1000A1007

Wire Saver Module THP9045A1023

* Prestige IAQ 2.0 Kits are packaged with 50062329-001 Dis-

charge and Return Air Sensors. Replacement Discharge/ Return Air Sensor part number is C7735A1000.

THM4000R1000

C7089U1006

C7189U1005

TR21

TR21-A

C7772A1004

C7772A1012

C7735A1000*

C7041

C7770A1006

50028399-001

3 68-0311—01

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 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)

• Gas, oil or electric heat with air conditioning

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

• Cool only

Changeover Manual or Auto changeover selectable

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

Fan setting Auto-On-Circ-Follow Schedule

Electrical Ratings:

Volt ag e

Ter minal

(50/60 Hz)

W - O/B 18 to 30 VAC and

Max. Current

Rating

1.00A

750 mVDC

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

Y2 (cooling) 18 to 30 VAC 0.60A

W3 - Aux 2 18 to 30 VAC 1.00A

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

U1, U1 18 to 30 VAC 0.50A

U2, U2 18 to 30 VAC 0.50A

U3, U3 18 to 30 VAC 0.50A

Power Consumption of THX9421/THX9321:

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

Operating Ambient Temperature:

THX9421/THX9321: 32 to 120 °F (0 to 48.9 °C) THM5421R1013: -40 to 165 °F (-40 to 73.9 °C) THM6000R1002: 32 to 120 °F (0 to 48.9 °C) REM5000R1001: 32 to 120 °F (0 to 48.9 °C) REM1000R1003: 32 to 120 °F (0 to 48.9 °C) HVC20A1000: 32 to 120 °F (0 to 48.9 °C) C7089R1013: -40 to 140 °F (-40 to 60 °C) C7089U1006: -40 to 120 °F (-40 to 48.9 °C) C7189R1004: 0 to 120 °F (-17.8 to 48.9 °C)

— For Optimal Battery Life: 35 to 114 °F (1.7 to 45.6 °C) C7189U1005: 45 to 88 °F (7 to 32 °C) C7772A1004: 45 to 99 °F (7 to 37 °C) C7772A1012: 45 to 99 °F (7 to 37 °C) TR21: 45 to 99 °F (7 to 37 °C) TR21-A: 45 to 99 °F (7 to 37 °C) C7735A1000: 0 to 200 °F (-17.8 to 93.3 °C) C7041: C7770A1006: 45 to 99 °F (7 to 37 °C) THP1000A1007: 0 to 130 °F (-17.8 to 54.4 °C) THP9045A1023: -40 to 163 °F (-40 to 73 °C)

Shipping Temperature:

THX9421/THX9321: -20 to 120 °F (-28.9 to 48.9 °C) THM5421R1013: -20 to 165 °F (-28.9 to 73.9 °C) THM6000R1002: -20 to 120 °F (-28.9 to 48.9 °C) REM5000R1001: -20 to 120 °F (-28.9 to 48.9 °C)

REM1000R1003: -20 to 120 °F (-28.9 to 48.9 °C) HVC20A1000: -20 to 120 °F (-28.9 to 48.9 °C) C7089R1013: -40 to 120 °F (-40 to 48.9 °C) C7089U1006: -40 to 130 °F (-40 to 54.4 °C) C7189R1004: -20 to 120 °F (-28.9 to 48.9 °C) C7189U1005: -20 to 120 °F (-28.9 to 48.9 °C) C7772A1004: -40 to 150 °F (-40 to 65.5 °C) C7772A1012: -40 to 150 °F (-40 to 65.5 °C) TR21: -40 to 150 °F (-40 to 65.5 °C) TR21-A: -40 to 150 °F (-40 to 65.5 °C) C7735A1000: -20 to 120 °F (-28.9 to 48.9 °C) C7041: C7770A1006: -40 to 150 °F (-40 to 65.5 °C) THP1000A1007: 0 to 130 °F (-17.8 to 54.4 °C) THP9045A1023: -40 to 185 °F (-40 to 85 °C)

Operating Relative Humidity:

THX9421/THX9321: 5 to 90% non-condensing THM5421R1013: 5 to 95% non-condensing THM6000R1002: 5 to 90% non-condensing REM5000R1001: 5 to 90% non-condensing REM1000R1003: 5 to 90% non-condensing HVC20A1000: 5 to 90% non-condensing C7089R1013: 0 to 100% condensing C7089U1006: 5 to 95% non-condensing C7189R1004: 5 to 90% non-condensing C7189U1005: 5 to 95% non-condensing C7772A1004: 5 to 95% non-condensing C7772A1012: 5 to 95% non-condensing TR21: 5 to 95% non-condensing TR21-A: 5 to 95% non-condensing C7770A1006: 5 to 95% non-condensing THP1000A1007: 5 to 90% non-condensing THP9045A1023: 5 to 90% non-condensing

Temperature Setting Range:

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

Humidification Setting Range:

10% to 60% RH.

Dehumidification Setting Range:

40% to 80% RH.

Humidity Display Range:

0% to 99%.

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 21 for more information.

68-0311—01 4

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

M33329

6-51/64 (173)

3-19/64 (84)

1-13/32

(36)

3-29/32

(99)

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

minutes per month over the operating ambient temperature range.

Color/Finish:

THX9421/THX9321: Arctic White THM5421R1013: Gray THM6000R1002: Black REM5000R1001: Arctic White / Gray REM1000R1003: Arctic White HVC20A1000: Arctic White C7089R1013: Gray C7189R1004: Arctic White C7189U1005: Premier White C7772A1004: Brushed Stainless Steel C7772A1012: Brushed Stainless Steel TR21: White TR21-A: White C7735A1000: Gray 50028399-001: Arctic White THP1000A1007: Gray THP9045A1023: Gray

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.

C7735A1000: Probe: 3-3/4 x 1/4 inches

(77 x 6.4 mm)

C7735A1000: Cap Diameter: 2-7/16 inches

(62 mm)

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

(107 x 59 x 43 mm)

C7770A1006: Probe: 6 x 1/4 inches

(152 mm x 6.4 mm)

50028399-001: 5-1/2 x 7-7/8

(141 x 201 mm)

THP1000A1007: 6-1/2 x 3-11/16 x 1-1/8 inches

(165 x 93.5 x 29 mm)

THP9045A1023: 2-7/8 x 3-3/8 x 15/16 inches

(73 x 86 x 23 mm)

Dimensions:

THX9421 / THX9321: 3-7/8 x 6-13/16 x 1-7/16 inches

(99 x 173 x 36 mm)

THM5421R1013: 9-5/16 x 4-13/16 x 1-19/32 inches

(237 x 122 x 40.5 mm)

THM6000R1002: 6 x 4-7/8 x 2-1/2 inches

(152 x 124 x 64 mm)

REM5000R1001: 6-1/4 x 3-1/8 x 1-5/8 inches

(158 x 80 x 38 mm)

REM1000R1003: 3-15/16 x 1-15/16 x 5/8 inches

(101 x 50 x 16 mm)

HVC20A1000: 3-15/16 x 1-15/16 x 5/8 inches

(101 x 50 x 16 mm)

C7089R1013: 5 x 3-1/2 x 1-11/16 inches

(127 x 89 x 43 mm)

C7089U1006 (mounting clip): 1-1/2 inches

(38 mm)

C7189R1004: 2-7/8 x 1-7/8 x 15/16 inches

(74 x 48 x24 mm)

C7189U1005: 2-9/32 x 1-1/2 x 11/16 inches

(58 x 38 x 18 mm)

C7772A1004: 4-1/2 x 2-3/4 x 5/16 inches

(114 x 70 x 8 mm)

C7772A1012: 4-1/2 x 2-3/4 x 5/16 inches

(114 x 70 x 8 mm)

TR21:4-9/16 x 3 x 7/8 inches

(116 x 76.5 x 22 mm)

TR21-A: 4-9/16 x 3 x 7/8 inches

(116 x 76.5 x 22 mm)

Fig. 1. Dimensions of thermostat in in. (mm).

7-29/32 (201)

3-19/64 (84)

5-1/2 (140)

M33330

Fig. 2. Dimensions of Prestige cover plate in in. (mm).

5 68-0311—01

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

CAUTION

MCR32388

9-11/32

(237)

1-19/32

(41)

M33331

4-53/64 (123)

8-7/8 (225)

Fig. 3. Dimensions of Equipment Interface Module in in.

(mm).

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.

Installing Equipment Interface Module (if used)

If no Equipment Interface Module is used, skip to “Selecting Thermostat Location” beginning on page 8.

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.

1. Use screws & anchors as appropriate for the mounting surface. Mount the EIM near the HVAC equipment, or on the equipment itself.

2. To wire the EIM, strip 1/4” insulation, then insert wires (see Fig. 4). For wiring diagrams, see “Wiring” beginning on page 102.

R

C

W

O/B

W2

AUX1

W3

AUX2

Y

Y2

G

L

MCR32389

Fig. 4.

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.

Discharge and Return Air Temperature Sensor Mounting Locations

Refer to the guidelines below and Fig. 5–9 for mounting locations of the Discharge and Return Air Temperature Sensors.

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. 5.

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. 6–7.

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. 6. When setting the Delta T Limits (see “Set Delta T Limits” on page 53), 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. 8–9.

68-0311—01 6

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

MOUNT DISCHARGE SENSOR HERE

M33074

HEAT

EXCHANGER

BLOWER

VENTILATOR

OR

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

OR

DEHUMIDIF IER

MOUNT DISCHARGE SENSOR HERE

MOUNT DOWNSTREAM OF BYPASS HUMIDIFIER

BYPASS

HUMIDIFIER

M33078A

Return Air Temperature Sensor Mounting Location

1. Install the Return Air Temperature Sensor on the return

duct in a location where the air is mixed well. Mount the Return Air Temperature Sensor downstream of a Bypass Humidifier, Dehumidifier or Ventilator. See Fig. 5–9.

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 RETURN SENSOR HERE

DOWNSTREAM OF DEHUMIDIFIER

HEAT

EXCHANGER

BLOWER

MOUNT DISCHARGE SENSOR HERE

ABOVE CENTER OF A-COIL

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

OR

DEHUMIDIF IER

MOUNT RETURN SENSOR HERE

DOWNSTREAM OF VENTILATOR OR DEHUMIDIFIER

Fig. 5.

Fig. 6.

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. 7.

Fig. 8.

7 68-0311—01

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

CAUTION

MOUNT RETURN SENSOR HERE

MOUNT DOWNSTREAM OF BYPASS HUMIDIFIER, DEHUMIDIFIER OR VENTILATOR

HEAT

EXCHANGER

BLOWER

VENTILATOR

OR

DEHUMIDIF IER

MOUNT DISCHARGE SENSOR HERE

BYPASS

HUMIDIFIER

M33079A

M32995

5 FEET

[1.5 METERS]

YES

NO

M19925

MCR29241

MCR32386

Do not install the thermostat where it can be affected by:

Fig. 9.

— Drafts or dead spots behind doors and in corners. — Hot or cold air from ducts. — Radiant heat from sun or appliances.

INSTALLATION

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

1. Attach plastic cover to the sensor probe.

— Concealed pipes and chimneys. — Unheated (uncooled) areas such as an outside wall behind

the thermostat.

Installing Wallplate

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

the ductwork with enclosed screws (see Fig. 10).

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

4. Configure the S1 or S2 terminals in the Installer Setup at

the thermostat.

Fig. 11. Selecting thermostat location.

Electrical Hazard. Can cause electrical shock or equipment damage.

Disconnect power before wiring.

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. 11.

68-0311—01 8

Fig. 10. Mounting Discharge/Return Air Sensor.

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

2. Use a pencil to mark the mounting holes.

3. 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.

4. Position the wallplate over the holes, pulling wires through the wiring opening. See Fig. 12.

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

Fig. 12. Mounting wallplate.

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

MCR32387

MCR32938

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. 13.

2. Snap thermostat onto wallplate after wiring is complete.

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. 13.

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 107.

2. Snap thermostat onto wallplate after wiring is complete.

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. 13.

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

separate 24 volt transformer (not provided). See Fig. 13.

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.

INSTALL OPTIONAL ACCESSORIES

Power Optional RedLINK™ Accessories

1. If no wireless accessories are used, skip to “Link thermo-

stat to EIM or TrueZONE® Wireless Adapter” beginning on page 10.

2. If no wireless accessories are used and there is no EIM or TrueZONE Wireless Adapter, skip to “Installer Setup” beginning on page 14.

3. Install batteries in the wireless accessories.

Outdoor air sensor

1. Install 2 fresh AA lithium batteries.

MCR32937

Fig. 14.

Portable Comfort Control

1. Install 3 fresh AA alkaline batteries.

Fig. 13. Inserting wires in thermostat terminal block.

MCR32939

Fig. 15.

Indoor air sensor

1. Install 2 fresh AAA alkaline batteries.

Fig. 16.

9 68-0311—01

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

M32940

THM4000R1000

TrueSTEAM

MCR31476

6

543

2

ON

OFF

1

MCR33269

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.

Fig. 17.

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

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.

Fig. 19. Installing Entry/Exit Remote or Vent Boost Remote

battery.

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

is not good.

Link thermostat to EIM or TrueZONE® Wireless Adapter

If no EIM or TrueZONE® Wireless Adapter are used, skip to “Link Optional RedLINK™ Accessories” beginning on page 11.

1. Press and release the CONNECT button at the EIM or Wireless Adapter, and make sure the “Connected” light is flashing green.

Fig. 18. Powering TrueSTEAM wireless adapter.

CONNECTED

CONNECT

S2 S2 S1 S1

MCR32941

Fig. 20. EIM CONNECT button.

2. If the “Connected” light does not flash, make sure no

other RedLINK devices are in Wireless Setup mode, then try again.

NOTE: If the “Power” light at the Wireless Adapter does

not turn on, consult the TrueZONE manual for help.

3. While the “Connected” light is flashing, follow the prompts on the thermostat screen until you reach the Wireless Setup screen.

4. Press NEXT to link the thermostat. After a brief delay, the screen will display “Device Connected.”

68-0311—01 10

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

MCR28847A

NOYES

CONNECT MORE?

M28482

Fig. 21.

NOTE: If the thermostat did not connect to the EIM or

Wireless Adapter, verify the “Connected” LED is still flashing and the thermostat is at least 2 feet away from the EIM or Wireless Adapter, and repeat steps 1–4 above.

press MENU > EQUIPMENT STATUS to find the date code. Scroll down to WIRELESS DEVICE MANAGER and then select ADD DEVICE.

Link Wireless Outdoor Sensor

1. Press and release the CONNECT button. After a short

delay, the thermostat will display “Wireless Outdoor Sensor added” on the Add Device screen.

“Connected” Status Light (Fig. 20)

• Green flashing: In Wireless Setup mode.

• Green steady: RedLINK device(s) are communicating.

• Red: RedLINK device(s) not communicating. Check EIM and RedLINK devices.

Link Optional RedLINK™ Accessories

NOTE: If you are not connecting any RedLINK devices,

skip to “Installer Setup” beginning on page 14.

1. While the Add Device screen (see Fig. 22) is displayed

on the thermostat, press and release the CONNECT button on each wireless device. Accessories need to be at least 2 feet away from the thermostat, EIM, or TrueZONE Wireless Adapter during the linking process.

Fig. 23. Wireless outdoor sensor connect button.

Link Portable Comfort Control

1. Press CONNECT on the Portable Comfort Control dis-

play screen.

CONNECT

WIRELESS SETUP

MCR32942

Fig. 24. 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. 25.

NOTE: The Portable Comfort Control can control up to 16

thermostats.

2. Press DONE on the Add Device screen after ALL

devices have been linked (see Fig. 22).

NOTE: If you need to return to the “Add Device” screen

Fig. 22. Add Device screen.

to add devices later, press MENU and scroll down to INSTALLER OPTIONS. Enter the date code (password) when prompted. The date code is printed on the back of the thermostat or

Fig. 25. Connect additional thermostats to Portable

Comfort Control.

4. Follow the same linking procedure as above to connect

additional thermostats.

11 68-0311—01

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 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. 26.

Fig. 26. Restarting the linking process.

Link TrueSTEAM

1. Press and release the CONNECT button on THM4000

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

Link Wireless Indoor Sensor

1. Press and release the CONNECT button. After a short

delay, the status light (see Fig. 25) will glow green for 15 seconds. If the status light turns red, the sensor did not link with the thermostat.

Fig. 28. 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. 29.

Link RedLINK Internet Gateway

1. Press and release the button on the bottom of the Inter-

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

Fig. 27. 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. 29.

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.

68-0311—01 12

Fig. 30.

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

M28849A

M7514

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. 31.

Fig. 31.

Link Entry/Exit Remote or Vent Boost Remote

1. Press and release CONNECT button.

• where snow, ice or debris can cover it.

MOUNTING C7089R1013 WIRELESS OUTDOOR SENSOR

Use the following steps to mount the sensor (see Fig. 33):

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.

M28491

MCR33096

Fig. 32. Connect button and status light on Entry/Exit

Remote or Vent Boost Remote.

2. After a short delay, the status light will glow green for 15

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

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

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

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

remotes.

Mount 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).

Fig. 33. Mounting Outdoor Sensor.

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 118.

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.

Fig. 34. Typical locations for C7089U1006 Outdoor Sensor.

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

M32936

M24056

M33095

Mounting C7189R1004 Wireless Indoor Sensor

Use the following steps to mount the sensor (see Fig. 35):

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.

6. Replace the cover on the remote sensor.

7. When you finish linking wireless devices, the thermostat

M24057

Fig. 37. Mount wallplate to wall.

automatically enters Installer Setup. See “Installer Setup” beginning on page 14.

Fig. 35. Mounting Indoor Sensor.

Mounting C7189U1005 Wired Indoor Sensor

Use the following steps to mount the sensor:

1. Remove the cover from the remote sensor (see Fig. 36).

Fig. 36. 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. 37).

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. 38. Mounting Entry/Exit Remote or Vent Boost

Remote.

3. Replace the cover on the remote.

INSTALLER SETUP

When you finish linking wireless devices, the thermostat automatically enters Installer Setup. The steps below explain how to enter Installer Setup from the Home screen.

68-0311—01 14

To set up the thermostat, press MENU and scroll down to INSTALLER OPTIONS. Enter the date code (password) when prompted. The date code is printed on the back of the thermostat or press MENU > EQUIPMENT STATUS to find the date code.

1. Press CREATE SETUP to set all system settings one by one.

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

Fig. 39. Installer Options screen.

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 1. Installer Options.

Menu Item Description

Create Setup Press CREATE SETUP to set all system

settings one by one.

View/Edit Current Setup

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

Set Up Diagnostics

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

Installer Test Press INSTALLER TEST to quickly

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

Data Logs Press DATA LOGS to view the Alerts Log

and User Interactions Log.

Wireless Device Manager

Advanced Options

Press WIRELESS DEVICE MANAGER to add or remove wireless accessories

Press ADVANCED OPTIONS to setup the thermostat using a USB device or to restore the thermostat to the factory default settings.

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.

Table 2. Installer Setup (ISU) Table.

ISU

Number Installer Setup Name Settings Default

1000 Language English

Français Español

1010 Application Residential

Commercial

1020 Zone Number 1-16 1 Both No This ISU is only displayed on a thermostat that is

1030 Device Name [Enter Device Name] Thermostat Both No The Portable Comfort Control remote and Web

1030 Display on Home

1040 Scheduling Options Non-Programmable

1050 Temperature

Screen

Indication Scale

No Yes (select check box)

Programmable

Fahrenheit Celsius

English Both No

Residential Both No

No Commercial No Thermostat location (name) can be displayed on the

Programmable Both No

Fahrenheit Both No

Residential, Commercial

or Both

Requires

EIM Notes

controlling a zone panel through the THM4000 Wireless Adapter.

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

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.

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

1060 Outdoor Air Sensor No

Yes

2000 Heating System Type Conventional Forced Air Heat

Heat Pump Radiant Heat Other None (Cool Only)

2010 Heating Equipment

Type

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

No Both No This ISU automatically defaults to Yes when a

Conventional Forced Air Heat

Default varies based on previous selections

Residential, Commercial

or Both

Both No

Both No Cycle Rate and Fan Operation automatically default

Requires

EIM Notes

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]

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 62.

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

68-0311—01 16

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

2030 What Terminals are

2040 What Terminals are

2050 Geothermal Forced

2060 Reversing Valve O/B O (O/B on Cool)

2070 Cool Stages /

2020, 2070

Wired to Radiant Heat?

Wired to Radiant Heat

- Stage 2?

Air System

Compressor Stages

Heat Stages / Backup Heat Stages

None U1 U2 U3

None Used for Cooling Only Used for Heating and Cooling

B (O/B on Heat)

1-4 1 if ISU 1010 is

1 - 3 Default is 1 stage

Default varies based on previous selections

Used for Heating and Cooling

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

Residential

2 if ISU 1010 is Commercial

if ISU 1010 Application is Residential

Default is 2 stages if ISU 1010 Application is Commercial

Residential, Commercial

or Both

Both No This ISU is only displayed when ISU 2010 Heating

Both No This thermostat has the capability of controlling

Both No Conventional:

Both No Maximum of 3 Heat Stages for conventional

Requires

EIM Notes

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).

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).

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.

Heat Pump, Geothermal Heat Pump or Geothermal Radiant Heat.

Cool Stage 3 and 4 are only available if ISU 1010 is Commercial.

Cool Stage 3 and 4 must be wired to a universal terminal (U1, U2 or U3).

Heat Pumps:

Maximum of 2 Compressor Stages for heat pump systems.

systems.

Maximum of 2 Backup Heat Stages for systems with more than 1 heating equipment type.

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

2080 What Terminals are

2090 What Terminals are

2100 What Terminals are

2110 Fan Operation in Heat No Fan

2120 Backup Heat Type None

2130 Backup Heat Stages 0 - 2 1 Both No This ISU is only displayed when a backup heat

Wired to Cool - Stage 3?

Wired to Cool - Stage 4?

Wired to Heat - Stage 3?

None U1 U2 U3

Equipment Controls Fan Thermostat Controls Fan

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

Default varies based on previous selections

Thermostat Controls Fan

None Both No This ISU is only displayed when ISU 2010 Heating

Residential, Commercial

or Both

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

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

Both No THX9321 Thermostat Only:

Both No This ISU is only displayed when ISU 2010 Heating

Requires

EIM Notes

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).

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).

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.

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.

No Fan is only displayed when ISU 2010 Heating

Equipment Type is Other.

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.

source is selected at ISU 2120 Backup Heat Type.

Maximum of 2 Backup Heat stages.

68-0311—01 18

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

2140 What Terminals are

2150 Backup Heat

2160 Backup Heat Fan

2170 What Terminals are

2180 Backup Heat Type Electric Forced Air

Wired to Backup Heat?

Operation

Wired to Backup Heat

- Stage 2?

None U1 U2

NOT Allowed to Run with Primary Heat

Allowed to Run with Primary Heat

No Fan Equipment Controls Fan Thermostat Controls Fan

None U1 U2

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

Default varies based on previous selections

NOT allowed to run with Primary Heat

Thermostat Controls Fan

Default varies based on previous selections

Electric Forced Air

Residential, Commercial

or Both

Both No THX9321 Thermostat Only:

Both No This ISU is only displayed when ISU 2010 Heating

Both No This ISU is only displayed for conventional systems

Both No THX9321 Thermostat Only:

Both No This ISU is only displayed when ISU 2010 Heating

Requires

EIM Notes

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.

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.

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 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.

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.

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 62.

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

2190 External Fossil Fuel

2200 Backup Heat

2210 Backup Heat Fan

2220 A-L/A Terminal Setup None

3000 Changeover Manual

Kit

Operation

Thermostat Controls Backup Heat External Fossil Fuel Kit Controls

Backup Heat

NOT allowed to Run with Heat Pump

Allowed to Run with Heat Pump

No Fan Equipment Controls Fan Thermostat Controls Fan

Time Of Day Economizer Heat Pump Failure Indication

Automatic

Thermostat Controls Backup Heat

Default varies based on previous selections

None Commercial No This ISU is only displayed when ISU 1010

Manual:

if ISU 1010 is Residential

Automatic:

if ISU 1010 is Commercial

Residential, Commercial

or Both

Both No This ISU is only displayed when ISU 2010 Heating

Both No This ISU is only displayed for heat pumps when ISU

Both No Manual: The user must select heating or cooling as

Requires

EIM Notes

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.

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.

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.

2180 Backup Heat Type is Other.

Backup Heat Fan Operation:

Electric Forced Air: Thermostat Controls Fan

Standard Efficiency Gas Forced Air: Equipment Controls Fan

High Efficiency Gas Forced Air: Equipment Controls Fan

Oil Forced Air: Equipment Controls Fan

Hot Water Fan Coil: Thermostat Controls Fan

Hot Water Radiant Heat: Not Applicable

Application is Commercial.

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 91. 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.

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.

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

3000 Deadband 2° F to 9° F (in 1° F increments) 3° F Both No This ISU is only displayed when ISU 3000 is set to

3010 Temperature Control

3020 Finish With High Cool

3021 Finish With High Heat

3030 Staging Control -

Options

Stage

Cool Differential Stage 2

Basic Options Advanced Options Advanced Options + PID Settings

No Yes

Comfort

1.0° F to 3.5° F from setpoint (in

0.5° F increments)

Basic Options Both No Basic Options: The Installer Setup displays basic

No Both No ISU 3010 Temperature Control Options must be set

Comfort Both No ISU 3010 Temperature Control Options must be set

Residential, Commercial

or Both

Requires

EIM Notes

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.

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.

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.

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.

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.

to Advanced to view or adjust this ISU.

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.

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THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

3030 Staging Control -

3040 Staging Control -

3050 Staging Control -

Cool Differential Stage 3

Cool Differential Stage 4

Radiant Heat Differential Stage 2

Heat Differential Stage 2

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

Heat Differential Stage 3

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

Comfort

1.0°F - 4.0°F from setpoint (in

0.5° F increments)

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)

Comfort

1.0° F to 3.5° F from setpoint (in

0.5° F increments)

Comfort

1.0° F to 4.0° F from setpoint (in

0.5° F increments)

Comfort Commercial No ISU 3010 Temperature Control Options must be set

Comfort Both No ISU 3010 Temperature Control Options must be set

Residential, Commercial

or Both

Requires

EIM Notes

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.

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.

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.

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.

to Advanced to view or adjust this ISU.

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

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.

68-0311—01 22

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

3060 Staging Control -

3080, 3090

3110 Backup Heat Upstage

Compressor Heat Differential Stage 1

Compressor Heat Differential Stage 2

Staging Control Backup Heat Differential Stage 1

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

Staging Control Backup Heat Differential Stage 2

Timer

Comfort

1.0° F to 4.0° F from setpoint (in

0.5° F increments)

Comfort

1.0° F to 4.5° F from setpoint (in

0.5° F increments)

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

Comfort Both No ISU 3010 Temperature Control Options must be set

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

Comfort Both No ISU 3010 Temperature Control Options must be set

Off Both No The Backup Heat Upstage Timer starts when the

Residential, Commercial

or Both

Requires

EIM Notes

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.

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.

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.

that has more than one heating equipment type.

See “Backup Heat Differential (Droop)” beginning on page 60.

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.

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.

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 61.

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

3090).

23 68-0311—01

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

3120 Outdoor Temperature

3130 Radiant Heat Cycles

Lockouts:

Compressor Lockout / Balance Point

Lockouts:

Backup Heat Lockout

Per Hour - Stage 1

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

Per Hour - Stage 2

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

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

1 to 12 CPH 3 Both No ISU 3010 Temperature Control Options must be set

Off

(See Notes)

Off Both No ISU 3120 Backup Heat Outdoor Temperature

Residential, Commercial

or Both

Both No ISU 3120 Compressor Lockout / Balance Point

Requires

EIM Notes

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 62.

Lockout requires an outdoor sensor.

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 62.

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.

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.

68-0311—01 24

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

3140 Cool / Compressor

3140 Cool Cycles Per Hour

Cycles Per Hour Stage 1

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

Cycles Per Hour Stage 2

- Stage 3

- Stage 4

1 to 6 CPH 3 Both No ISU 3010 Temperature Control Options must be set

1 to 6 CPH 3 Commercial No ISU 3010 Temperature Control Options must be set

Residential, Commercial

or Both

Requires

EIM Notes

to Advanced to view or adjust cycle rate.

This ISU is only displayed when ISU 2070 Cool / Compressor 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.

to Advanced to view or adjust cycle rate.

This ISU is only displayed when ISU 2070 Cool / Compressor 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.

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.

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.

25 68-0311—01

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. 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.

- 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

Both No ISU 3010 Temperature Control Options must be set

Requires

EIM Notes

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

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.

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

68-0311—01 26

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

3150 Heat Cycles Per Hour

3160 Backup Heat Cycles

- Stage 3

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

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

Both No ISU 3010 Temperature Control Options must be set

Requires

EIM Notes

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

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

27 68-0311—01

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

3160 Backup Heat Cycles

3170 Cooling Throttling

3180 Cooling Integral 0, 100 to 25,000 sec 10,000 sec Commercial No The default Cooling Integral is 10,000 seconds

3190 Cooling Derivative 0, 100 to 25,000 sec 0 sec Commercial No The default Cooling Derivative is 0 seconds which is

3200 Heating Throttling

3210 Heating Integral 0, 100 to 25,000 sec 10,000 sec Commercial No The default Heating Integral is 10,000 seconds

3220 Heating Derivative 0, 100 to 25,000 sec 0 sec Commercial No The default Heating Derivative is 0 seconds which is

3240 Minimum

Per Hour - Stage 2

Range

Compressor Off Time

1 to 12 CPH Default varies

1° F to 30° F 2° F Commercial No The default Cooling Throttling range is 2° F (1.5° C)

1° F to 30° F 2° F Commercial No The default Heating Throttling Range is 2° F (1.5° C)

Off 1 - 5 minutes

based on heating equipment type selected

5 minutes Both No The thermostat has a built in compressor protection

Residential, Commercial

or Both

Both No ISU 3010 Temperature Control Options must be set

Requires

EIM Notes

to Advanced to view or adjust cycle rate.

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

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.

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.

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.

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.

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.

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.

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

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

68-0311—01 28

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

3260 Extended Fan Run

4000 Number Of Schedule

4010 Pre-Occupancy Purge

4020 Type of Override Standard

4030 Override Duration No Limit

4050 Minimum Heat

Time in Cool

Time in Heat

Periods

Duration

Recovery Ramp Rate

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 4 periods per day Both No Residential:

Off 1 hour 2 hour 3 hour

Initiate Occupancy

1 to 12 Hours

Off 1° F/hr to 20° F/hr

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

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

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

Standard Commercial No Standard:

3 hours Commercial No When the user presses the OVERRIDE button, the

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

Residential, Commercial

or Both

Requires

EIM Notes

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

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

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

period to provide a comfortable workplace upon arrival.

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.

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.

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.

29 68-0311—01

THX9321 PRESTIGE® 2.0 AND THX9421 PRESTIGE® IAQ 2.0 WITH EIM

Table 2. Installer Setup (ISU) Table. (Continued)

ISU

Number Installer Setup Name Settings Default

4050 Outdoor Temperature

4060 Maximum Heat

4060 Outdoor Temperature

used with Minimum Heat Recovery Ramp Rate

Recovery Ramp Rate

used with Maximum Heat Recovery Ramp Rate

Off

-20° F to 100°F

Off 1° F/hr to 20° F/hr

Off

-20° F to 100° F

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

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

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

Residential, Commercial

or Both

Requires

EIM Notes

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.

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.

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.

68-0311—01 30

Honeywell THX9421, THX9321 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

APPLICATION

FEATURES

CONTENTS

SPECIFICATIONS

SYSTEM INSTALLATION

When Installing this Product...

Installing Equipment Interface Module (if used)

Wiring 24 Vac Common

Discharge and Return Air Temperature Sensor Mounting Locations

Return Air Temperature Sensor Mounting Location

INSTALLATION

Installing Wallplate

Selecting Thermostat Location

INSTALL OPTIONAL ACCESSORIES

Power Optional RedLINK™ Accessories

Link thermostat to EIM or TrueZONE® Wireless Adapter

Link Optional RedLINK™ Accessories

Mount Optional Accessories

INSTALLER SETUP