Honeywell THM5421C1008 User Manual

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VisionPRO® IAQ Total Home Comfort System

FEATURES

• Large, clear display with backlight shows the current and set temperature and time—even in the dark.

• Touchscreen interaction

• Real-time clock keeps time during power failures and automatically updates to daylight savings.

• Change/check reminders let you know when to service or replace filters.

• Various Hold options allow you to override the program schedule, as desired.

• Controls humidification to increase homeowner comfort while protecting woodwork and furnishings.

• Controls dehumidification using air conditioner with high or low speed fan or a whole house dehumidifier.

• Controls ventilation with other HRV, ERV, or Freshair damper. Vent on demand and automatically using patented advanced ventilation control.

APPLICATION

• Advanced heat pump control featuring balance point plus 2°F droop to increase homeowner comfort.

PRODUCT DATA

The VisionPRO® IAQ Total Home Comfort System features an effortless, 7-Day programmable touchscreen thermostat that provides control of temperature, humidification, dehumidification, and ventilation.

Contents

Application/Features.......................................................... 1

Specifications/Ordering Information .................................. 2

Installation ........................................................................ 4

Wiring ............................................................................... 5

Power the Thermostat ...................................................... 8

Installer Setup .................................................................. 12

Operation .......................................................................... 19

Programming .................................................................... 25

Troubleshooting ................................................................ 35

68-0287-1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

SPECIFICATIONS

Thermostat Description:

Feature Description

Powering method • Common wire only

System types (up to 4 heat/2 cool)

• Gas, oil or electric heat with air

conditioning

• Warm air, hot water, high-efficiency

furnaces, heat pumps, steam and gravity

• Heat only with fan

• Cool only

Changeover Manual or Auto changeover selectable

System setting Heat-Off-Cool-Auto

Fan setting Auto-On-Circ

Electrical Ratings:

Terminal Voltage (50/60 Hz) Running Current

W1 Heating 20 - 30 Vac .02 - 1.0A

W2/Aux Heating 20 - 30 Vac .02 - 1.0A

W3/Aux2 Heating 20 - 30 Vac .02 - 1.0A

Y Cooling 20 - 30 Vac .02 - 1.0A

Y2 Cooling 20 - 30 Vac .02 - 1.0A

G Fan 20 - 30 Vac .02 - 1.0A

Temperature Setting Range:

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

Operating Ambient Temperature:

VisionPRO

IAQ Thermostats: 0°F to 120°F

(-18°C to 49°C). THM5421C1008: -30°F to 150°F (-34°C to 66°C). C7089U1006: -40°F to 120°F (-40°C to 49°C). C7189U1005: 45°F to 88°F (7°C to 32°C).

Shipping Temperature:

VisionPRO

IAQ Thermostats: -30°F to 150°F

(-34°C to 66°C). THM5421C1008: -30°F to 150°F (-34°C to 66°C).

Operating Relative Humidity (Non-condensing):

VisionPRO

IAQ Thermostats: 5% to 90%. THM5421C1008: 5% to 90%. C7089U1006: 5% to 95%. C7189U1005: 5% to 95%.

Humidification Setting Range:

Heating: 10% to 60% RH.

Dehumidification Setting Range:

Heating: 40% to 80% RH.

Humidity Display Range:

0% to 99%.

Finish:

VisionPRO THM5421C1008: Premier White C7189U1005 Wall Mount Remote Indoor Sensor: Premier

White

IAQ Thermostats: Premier White® color.

color.

Clock Accuracy: +/- 1 minute per year.

Resistance Characteristics of Remote Sensors:

C7089U1006 Outdoor Sensor: Negative temperature coeffi-

cient (NTC) means that resistance decreases as the temperature increases. See Table 12 in the Operation section for sensor resistance characteristics.

C7189U1005 Remote Indoor Sensor: Negative temperature

coefficient (NTC), means that resistance decreases as the temperature increases. See Table 13 in the Operation section for sensor resistance characteristics.

Cool Indication:

VisionPRO

IAQ Comfort Systems show “Cool On” on the

thermostat screen when Cool is activated.

Heat Indication:

VisionPRO

IAQ Comfort Systems show “Heat On” on the

thermostat screen when Heat is activated.

Auxiliary Heat Indication:

VisionPRO

IAQ Comfort Systems show “Aux. Heat On” on

the thermostat screen when Auxiliary Heat is activated.

Calibration:

C7089U1006, C7189U1005 and VisionPRO® IAQ Comfort Sys-

tems are factory-calibrated and require no field calibration.

Interstage Differential:

VisionPRO

IAQ Comfort Systems operate with droopless control. Once the thermostat senses that 1st stage is running at 90% capacity, the thermostat energizes 2nd stage.

Mounting Means:

VisionPRO

IAQ Comfort System: Thermostat mounts directly on the wall in the living space using mounting screws and anchors provided. Fits a vertical or horizontal 2 x 4 in. junction box.

THM5421C1008 Equipment Interface Module (EIM) mounts on

HVAC equipment or on a wall in the equipment room.

C7089U1006 Outdoor Sensor: Mounts outside of living space

with mounting clip and screws provided.

C7189U1005 Remote Indoor Sensor: Mounts directly on the

wall using mounting screws and anchors provided.

Cover Plate:

32003796-001 Cover Plate is used to cover marks left on the

wall by the old thermostat.

Dimensions:

VisionPRO

IAQ Comfort System: see Fig. 1.

THM5421C1008: see Fig. 2 C7089U1006 Outdoor Sensor Mounting Clip: see Fig. 3. 32003796-001 Cover Plate: see Fig. 4. C7189U1005 Remote Indoor Sensor: see Fig. 5.

Cycle Rates (at 50% Load):

Heating: Selectable 1 - 12 cycles per hour. Cooling: Selectable 1 - 6 cycles per hour.

68-0287—1 2

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

WALLPLATE

3-3/8 (86)

THERMOSTAT

6 (152)

3-3/8 (86)

THERMOSTAT

AND WALLPLATE

4-9/16

(116)

1-3/8 (35)

M23539

1-1/2 (38)

M4488

Fig. 3. C7089U1006 Outdoor Sensor Mounting Clip

dimensions in in. (mm).

7-7/8 (200)

3-5/16 (84)

5-1/2

(140)

3-5/16

(84)

Fig. 1. VisionPRO® IAQ Comfort System

dimensions in in. (mm).

7-9/32

(185)

6-57/64

(175)

4-35/64

(116)

FRONT VIEW SIDE VIEW

1-21/64

(34)

M22139

Fig. 4. 32003796-001 Cover Plate dimensions in in. (mm).

M23544

Fig. 2. THM5421C1008 Equipment Interface Module

dimensions in in. (mm).

3 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

2-9/32

(58)

1-1/2 (38)

M23522

FRONT VIEW SIDE VIEW FRONT VIEW (COVER OFF)

Fig. 5. C7189U1005 Remote Indoor Sensor dimensions in in. (mm).

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.

Selecting Location

Install the thermostat about 5 ft. (1.5m) above the floor in an area with good air circulation at average temperature. See Fig. 6.

2-9/32

(58)

45/64

(18)

1-1/2 (38)

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

the thermostat.

Installing Wallplate

CAUTION

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.

M19925

YES

5 FEET

[1.5 METERS]

Fig. 6. Selecting thermostat location.

68-0287—1 4

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.

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

4. Position the wallplate over the holes, pulling wires

through the wiring opening. See Fig. 7.

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

WALL

WIRES THROUGH WALL AND WIRE SLOT

WALL ANCHORS (2)

MOUNTING HOLES

M23541

MOUNTING SCREWS (2)

M23543

Fig. 7. Mounting wallplate.

Installing Equipment Interface Module (EIM)

NOTE: It is normal for the LED to blink continuously during

startup, and while checking equipment status (Auto Discover mode).

WALL ANCHOR

COMMUNICATION LED

DRILL 3/16 IN. HOLES FOR DRYWALL. DRILL 7/32 IN. HOLES FOR PLASTER

CAUTION

Electrical Hazard. Can cause electrical shock or equipment damage.

Disconnect power before wiring.

The EIM can be mounted vertically on the HVAC equipment or on a wall in the equipment room.

1. Position the EIM.

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.

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

See Fig. 8.

Communication LED

The EIM has an LED (see Fig. 8) that communicates the EIM status as follows.

• LED blinks rapidly: Normal information transfer.

• LED blinks once: Incoming message to EIM.

• LED blinks continuously: Wiring problem. Check wiring to

terminals 1, 2, 3.

• LED always off: Wiring problem. Check wiring to terminals

1, 2, 3.

• LED always on: EIM may need replacement.

MOUNTING SCREW

M23484

Fig. 8. Mounting EIM.

WIRING

All wiring must comply with local electrical codes and ordinances. See Fig. 10–20.

1. Select set of terminal identifications (Table 1) that corre-

sponds with system type.

2. Loosen the screws for the appropriate system type

selected; see Table 1. See Table 2 for terminal designation descriptions. Insert wires in the terminal block under the loosened screw. See Fig. 9.

3. Securely tighten each screw.

4. Push excess wire back into the hole.

5. Plug the hole with nonflammable insulation to prevent

drafts from affecting the thermostat.

6. See Fig. 10–20 for typical wiring hookups.

Table 1. Selecting Terminal Identifications for System Type.

Wallplate Terminal

System Type

Identifications

Standard Heat/Cool Conventional 10, 11

Standard Multistage

Conventional 12

up to 3 Heat/2 Cool

Heat Pump with

Heat Pump 13

Auxiliary Heat

Wiring Diagram

Reference

5 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

M23541

Fig. 9. Inserting wires in terminal block.

NOTES:

1. When used in a single-transformer system, leave the metal jumper wires in place between R and Rc, and Rc and Rh. If used on a two-transformer system, remove metal jumper wire between Rc and Rh.

2. If thermostat is configured for a heat pump system in the Installer Setup, configure changeover valve for cool (O-factory setting) or heat (B).

For wiring to a W8835 Zone panel please refer to the product data sheet included with the panel.

IMPORTANT

Use 18-gauge thermostat wire.

Table 2. Terminal Designation Descriptions.

THM5421C1008

Terminal

Designations Function

1 Terminal 1—data to/from thermostat

2 Terminal 2—power from thermostat (24Vac)

3 Terminal 3—common from thermostat

(24Vac)

C 24 Vac Transformer Common

R 24 Vac Transformer

RC 24 Vac Cooling Transformer

RH 24 Vac Heating Transformer

HUM1/HUM2 Humidification Connection (normally open)

DHM1/DHM2 Dehumidification Connection (normally

open or closed based on installer setup)

VNT1/VNT2 Ventilation connection (normally open)

W1/O/B Stage 1 Heating Relay (Conventional)

Change-over Relay (Heat Pump)

W2/AUX Stage 2 Heating Relay (Conventional)

Auxiliary Heat (fossil fuel or electric) (Heat Pump)

W3/AUX2 Stage 3 Heating Relay (Conventional)

Auxiliary Heat (fossil fuel or electric) (Heat Pump)

Y Stage 1 Compressor Relay

Y2 Stage 2 Compressor Relay

GFan Relay

L Heat Pump Equipment Monitor

OUT1/OUT2 Outdoor Temperature Sensor

IN1/IN2 Remote Indoor Temperature Sensor

DATS1/DATS2 Discharge Air Temperature Sensor

FACTORY INSTALLED JUMPER BETWEEN R, RC AND RH

WIRE TO TERMINALS ON THERMOSTAT.1

COMMUNICATION LED

COMMUNICATION TERMINALS

24 VAC

CONV. HP

O/B

AUX

AUX2

M23485

Fig. 10. Typical hookup of conventional single-stage heat

and cool system with single transformer

(1H/1C conventional).

OIL PRIMARY/ AQUASTAT

WIRE TO TERMINALS ON THERMOSTAT.1

FACTORY INSTALLED JUMPER BETWEEN R, AND RC (REMOVE FACTORY INSTALLED JUMPER BETWEEN RC AND RH

COMMUNICATION LED

COMMUNICATION TERMINALS

24 VAC

CONV. HP

O/B

AUX

AUX2

M23486

Fig. 11. Typical hookup of conventional single-stage heat

and cool system with oil primary (1H/1C conventional).

68-0287—1 6

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

KEY

= NORMALLY OPEN, DRY CONTACTS

= NORMALLY CLOSED, DRY CONTACTS

M23685

COMMUNICATION LED

FACTORY INSTALLED JUMPER BETWEEN R, RC AND RH

WIRE TO TERMINALS ON THERMOSTAT.

COMMUNICATION TERMINALS

24 VAC

CONV. HP

O/B

AUX

AUX2

HEAT 1 RELAY

HEAT 2 RELAY

HEAT 3 RELAY

COOL 1 RELAY

COOL 2 RELAY

FAN RELAY

M23487

Fig. 12. Typical hookup of conventional system with up to

three-stage heat and two-stage cool with one transformer

(3H/2C, 2H/2C, 2H/1C, 1H/2C, 1H/1C conventional).

FACTORY INSTALLED JUMPER BETWEEN R, RC AND RH

WIRE TO TERMINALS ON THERMOSTAT.

COMMUNICATION LED

COMMUNICATION TERMINALS

24 VAC

CONV. HP

O/B

AUX

AUX2

CHANGEOVER

AUX 1 (HEAT 3)

AUX 2 (HEAT 4)

COMP 1

COMP 2

FAN RELAY

M23488

Fig. 13. Typical hookup of heat pump system

(up to 4H/2C heat pump).

24 VAC

FIELD INSTALLED JUMPER BETWEEN R AND HUM 1

NON-POWERED

HUMIDIFIER

H1 U M2

D1 H M2

V1 N T2

M23489

24 VAC

POWERED

HUMIDIFIER

H1 U M2

D1 H M2

V1 N T2

M23490

Fig. 15. Typical hookup of powered humidifier.

24 VAC

FIELD INSTALLED JUMPER BETWEEN R AND DHM 1

LOW SPEED

FAN

H1 U M2

D1 H M2

V1 N T2

M23491

Fig. 16. Typical hookup of variable speed blower for

dehumidification in low speed (contacts normally closed).

NOTE: Connect DHM2 to low-speed fan terminal on air han-

dler for dehumidification with air conditioner and a low-speed fan.

24 VAC

H1 U M2

POWERED

DEHUMIDIFIER

D1 H M2

V1 N T2

M23492

Fig. 17. Typical hookup of powered whole house

dehumidifier (contacts normally open).

Fig. 14. Typical hookup of non-powered humidifier.

7 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

24 VAC

FIELD INSTALLED JUMPER BETWEEN R AND VNT 1

NON-POWERED

VENTILATOR

H1 U M2

D1 H M2

V1 N T2

M23493

Fig. 18. Typical hookup of fresh air damper.

NOTE: Use this hookup for ventilation using a fresh air

damper.

24 VAC

H1 U M2

D1 H

POWERED

VENTILATOR

V1 N T2

M23494

Fig. 19. Typical hookup of powered ventilation.

POWER THE THERMOSTAT

• 24 Vac common wire only to EIM or zone panel.

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.

1. Locate and remove the tab labeled, Remove, in the

lower left corner on the thermostat back. See Fig. 21.

REMOVE TAB

INSTALLATION

REMOVE DURING

INSTALLATION

REMOVE DURING

M19920

Fig. 21. Remove tab labeled, Remove, on thermostat back

Mount Thermostat to Wallplate

1. Align the terminal screw blocks with the pins on the back

of the thermostat. Push the thermostat straight onto the wallplate until it snaps into place. See Fig. 22.

24 VAC

FIELD INSTALLED JUMPER BETWEEN DHM 1 AND VNT 1

BLUE

YELLOW

DH90

GREEN

RED

WHITE

FRESH

AIR

DAMPER

H1 U M2

D1 H M2

V1 N T2

M23495

Fig. 20. Hookup of Honeywell DH90 with fresh air intake for

ventilation.

68-0287—1 8

WALLPLATE

TERMINAL SCREW BLOCK

Fig. 22. Mount thermostat to wallplate.

PINS ON

BACK OF

THERMOSTAT

M23542

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Locate and Mount C7089U1006 Outdoor Temperature Sensor (Optional)

Mount the sensor where (see Fig. 23):

• cannot tamper with settings.

• there is good air circulation.

• it can measure true outdoor ambient temperature.

• surface is flat.

• wire distance between C7089U1006 and EIM is less than 200 feet.

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.

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.

IMPORTANT

Erratic temperature readings from a sensor can occur as a result of any of the wiring practices described below. Avoid these practices to assure correct operation. Use shielded cable to reduce interference if rerouting sensor wiring is not possible.

— Be sure wires have a cable separate from the thermo-

stat cable.

— Do not route temperature sensor wiring with building

power wiring, next to control contactors or near light dimming circuits, electric motors or welding

equipment. — Avoid poor wiring connections. — Avoid intermittent or missing building earth ground.

CAUTION

Electrical Shock Hazard. Can cause electrical shock or equipment damage.

Disconnect power supply before connecting wiring.

Wiring must comply with applicable codes, ordinances and regulations:

1. Wire C7089U1006 Outdoor Sensor to OUT1and OUT2

terminals on the EIM. If leadwire provided is not long enough (60 in.), run a cable to a hole at C7089U1006 location. a. Using color-coded, 18-gauge thermostat wire is

recommended. For example of general wiring of C7089U1006, see Fig. 24.

b. Pigtail wiring can be used.

2. Mount C7089U1006 in its mounting clip.

3. Plug wiring hole using nonhardening caulk or putty.

M7514

Fig. 23. Typical locations for C7089U1006 Outdoor Sensor.

Wire C7089U1006 Outdoor Sensor

CAUTION

Electrical Interference (Noise) Hazard. Can cause erratic system operation.

Keep wiring at least one foot away from large inductive loads such as motors, line starters, lighting ballasts and large power distribution panels. Use shielded cable to reduce interference when rerouting is not possible.

WIRING HOLE

C7089

USE APPROPRIATE MOUNTING MEANS FOR THE TYPE OF STRUCTURE.

PLUG WIRING HOLE WITH NON-HARDENING CAULK OR PUTTY.

THROUGH STRUCTURE

M23525

Fig. 24. Wire C7089U1006 Outdoor Sensor to the EIM.

If an outdoor temperature sensor is installed, the thermostat displays the outside temperature in the lower right corner of the Home Screen.

9 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

MON

THUSASUN

SCHED

HOLD

Insi

AUT

SYSTEM

HEAT

SCHED HOLD CLOCK SCREEN MORE

t T

Following

Schedule

Outside

M22453

If thermostat is set to Auto Changeover System mode, press the More key until the outside temperature is shown on the screen.

TUE WED THU FRI SAT SUN

MON

YES

5 FEET

(1.5 METERS)

Fig. 25. Typical location for C7189U1005 Indoor Sensor.

Wire C7189U1005 Indoor Sensor

CAUTION

Electrical Interference (Noise) Hazard. Can cause erratic system operation.

Keep wiring at least one foot away from large inductive loads such as motors, line starters, lighting ballasts and large power distribution panels.

M4476

Outside

SCHED

HOLD

CLOCK SCREEN

DONE

WAKE

LEAVE RETURN SLEEP CANCEL

M22448

Locate and Mount C7189U1005 Remote Indoor Temperature Sensor (Optional)

1. Choose a location (see Fig. 25) for mounting the sensor

on an inside wall about 5 ft (1.5m) above the floor.

2. Be sure wire distance between C7189U1005 and EIM is

less than 200 feet.

3. Make sure there is good air circulation at average tem-

perature at the chosen location. Avoid the following locations because they can introduce errors in sensor measurements. See Fig. 25. a. Hot areas caused by:

(a)Concealed pipes or ducts. (b)Drafts from fireplaces or other heat sources. (c)Convection or radiant heat from the sun or

electrical equipment.

b. Cold areas caused by:

(a)Concealed pipes or ducts. (b)Drafts from windows and doors. (c)Unheated areas on the other side of the wall

c. Dead air areas:

4. Mark the area on the wall selected for mounting the

C7189U1005 Sensor.

5. Run wire cable to a hole at the selected wall location.

Pull approximately three inches of wire through the opening. Color-coded, 18-gauge thermostat wire is recommended.

location.

(a)Behind doors, furniture and curtains. (b)In corners and alcoves.

IMPORTANT

Erratic temperature readings from a sensor can occur as a result of any of the wiring practices described below. Avoid these practices to assure correct operation.

— Be sure wires have a cable separate from the thermo-

stat cable.

— Do not route temperature sensor wiring with building

power wiring, next to control contactors or near light

dimming circuits, electric motors or welding equipment. — Avoid poor wiring connections. — Avoid intermittent or missing building earth ground.

CAUTION

Electrical Shock Hazard. Can cause electrical shock or equipment damage.

Disconnect power supply before connecting wiring.

Wiring must comply with applicable codes, ordinances and regulations.

1. Wire C7189U1005 Indoor Sensor to IN1and IN2 termi-

nals on the EIM. For an example of general wiring of C7189U1005, see Fig. 26 to wire one sensor and Fig. 27 to wire multiple sensors.

2. Push excess wire back into the hole. Plug the hole using

nonhardening caulk, putty or insulation to prevent drafts from affecting performance.

3. Remove C7189U1005 cover.

4. Mount C7189U1005 to the wall using the screws and

anchors provided.

5. Level the C7189U1005 for appearance only. Device

functions correctly even when not level.

6. Install C7189U1005 cover.

68-0287—1 10

1 OUT 2 OUT

1 IN

2 IN

C7189

M23523

Fig. 26. Wiring a single C7189U1005 Indoor Sensor.

1 OUT 2 OUT

1 IN 2 IN

C7189 C7189

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

• The thermostat will display the temperature measured at

the sensor locations (internal thermostat sensor is

disabled). Sensors must be in square numbers (e.g., 4, 9,

16, and so on) and the displayed temperature will be an

average of the temperatures measured at each location.

• The thermostat will display a 50-50 average of the

temperature measured at the thermostat location and the

average of the temperatures measured at the remote indoor

sensor locations. In this case, the thermostat sensor still

carries a 50% weighting of the displayed temperature.

Install Discharge Air Temperature Sensor (Optional):

Prior to installing Discharge Air Temperature Sensor (DATS) refer to the installation instructions included with the product for more information on placement and wiring.

When using a DATS with network zoning the DATS will monitor the duct air temperature and communicate with the thermostat and will disable the heating and/or cooling if installer set high or low temperature limits are reached.

1 OUT 2 OUT

1 IN 2 IN

C7189 C7189

C7189 C7189 C7189

C7189 C7189

C7189

M23524

Fig. 27. Wiring Multiple C7189U1005 Sensors.

If a remote indoor temperature sensor is installed, the thermostat has several options for displaying the current indoor temperature. This is configured in ISU 340. The thermostat can display either the temperature measured at the thermostat location, the sensor location, or a 50-50 average of both.

ONE REMOTE INDOOR SENSOR INSTALLED (OPTIONAL)

If one remote indoor temperature sensor is used, based on configuration during installer setup, either of the following options are available:

When using a DATS with an Equipment Interface Module the DATS is for testing only. When the installer is in any of the Installer Tests pressing the “More” button will display the temperature measured at the DATS. This allows the installer to view the temperature of each stage of heating and or cooling. The DATS will not be used for control and will not disable heating or cooling based on duct air temperature.

Set Calendar and Time

Thermostat keeps current time and day for up to ten years under normal use after the calendar is set.

When the thermostat is first powered, the display is ready to set the calendar and time.

NOTE: Calendar can also be set in the Installer Setup.

1. Press the arrow keys to set the year, month and day.

2. Press the Done key.

SET CURRENT DAY SET MONTH

WEWETHTHFRFRSSAASU

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

CHANGE FILTER UV LAMP

• The thermostat will display the temperature measured at the sensor location (internal thermostat sensor is disabled).

• The thermostat will display a 50-50 average of the temperature measured at the thermostat location and the remote indoor sensor location.

MULTIPLE REMOTE INDOOR SENSORS INSTALLED (OPTIONAL)

If more than one remote indoor sensor is used, based on configuration during installer setup, either of the following options are available:

DONE

USE ARROWS TO SET YEAR AND TIME

M22424

3. Press the arrow keys to set the current time.

4. Press the Done Key.

11 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

USE ARROWS TO SET YEAR AND TIME

1. Press and release the System Key.

DON

M22425

INSTALLER SETUP

Auto Discover is available when the TH9421C thermostat is connected to an EIM. The EIM communicates information to the thermostat. Thermostat settings can be specified using the up and down arrow keys on the screen or set to Auto Discover.

Using Auto Discover

Some Installer setups are defaulted to Auto Discover. If not defaulted, the installer can change the option to Auto Discover, however, it is always important that the installer verify that the auto discovered values are correct for the system that is present.

FAN

Inside

AUTO

SYSTEM

EM HEAT

OFF

COOL

SCHED HOLD CLOCK

THU

Following Schedule

A M

Humidity

SCREEN

M23498

2. Press and hold the two blank keys on either side of the

center blank key for approximately five seconds until screen changes.

TU WEWETHTHFRFRSSAASU

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

CHANGE FILTER UV LAMP

SYSTE

HEAT

OFF

DONE

Inside

Set

Following Schedule

Humidity

CANCEL

When using the thermostat with an equipment interface module, Auto Discover will discover factory default settings and will not receive communications as to proper system settings. The equipment interface module is preprogrammed at the factory as a one heat one cool product and the thermostat will “auto discover” those settings. The equipment interface module will be reprogrammed when the installer manually changes the configuration in the installer set up. It is not recommended to use Auto Discover with an equipment interface module.

When using the VisionPRO® IAQ thermostat with a W8835 zone panel, configure the zone panel, using the DIP switches on the panel, for the proper system settings. Enter the installer setup on each thermostat and assign zone numbers, and change the system settings (ISU 172–180) to Auto Discover (E) then press the discover button on the zone panel. The zone panel will then communicate those settings back to the thermostats and the thermostats will automatically configure the ISU settings in Auto Discover, again it is important to verify that the auto discovered values are correct.

NOTE: When a VisionPRO® IAQ thermostat is being added

to an existing zoning system with T8635 Thermostats the new VisionPRO® IAQ must be set up as the Zone One Thermostat (master zone controller), and can only be used with a W8835 zone panel.

Follow these steps to enter the Installer Setup:

M23499

3. Release the two blank keys when the screen on the ther-

mostat matches the screen below.

DONE

M22442

68-0287—1 12

4. See screen below to review how the thermostat keys are

DONE

MON

THUSASUN

used during Installer Setup. See Table 3–4 for the Installer Setup Numbers and Settings.

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

ADVANCE TO NEXT

INSTALLER SETUP NUMBER

INSTALLER SETUP

CURRENT SETTING

ISU

Parameter

Number

Installer Setup

Name

110 Zone Number 0

120 USU

130 USU

140 USU

150 USU

160

Date (Year Upper)

Date (Year Lower)

Date (Month) 1-12 Select number that represents current calendar

Date (Day) 1-31 Select number that represents current calendar

Schedule Options 4

USU

165 USU

Restore Energy Star Schedule01

172 System Selection 1

174 Number of Cool/

Compressor Stages

176 Number of

180 Fan Operation

190 Reversing Valve

Conventional Heat or Heat Pump Aux Stages

Conventional heat only

O/B

PRESS TO EXIT INSTALLER SETUP

CHANGE THE CURRENT SETTING

M22443

5. Press the Done key to exit the Installer Setup screen.

Table 3. Installer Setup Menu.

(Factory Defaults Shown in Bold) Notes

Not zoned

1–9

Zone number

01-99 Default = 06 Select last two digits of current calendar year (2006 for

month.

Default = 06

date.

Default = 15

Seven-day programmable

2 3 E

2 E

2 3 E

Non-programmable

Yes

Conventional

Heat Pump Heat Only No Fan Auto Discover

none

2 Auto Discover

none

2 3 Auto Discover

Gas or oil furnace equipment controls fan in heating

Electric furnace—thermostat controls fan in heating Equipment controls stage 1; thermostat controls stage 2+ Auto Discover

Changeover valve—O/B terminal is energized in cooling

Changeover valve—O/B terminal is energized in heating

Settings

Select zone number. Zone 0 = not zoned Zone 1 = master zone controller Zone 2–9 = satellite thermostat

Select first two digits of current calendar year (2006 for example) - (2001-2178 available).

example) - (2001-2178 available).

Selection of a specific system setting will automatically modify some default settings and/or hide other installer setup options that follow.

Not shown if ISU172 = 3. Conventional systems = number of cooling stages. Heat Pump systems = number of compressor stages.

Conventional systems = number of heating stages (maximum of 3). Heat Pump systems = number of auxiliary heat stages (maximum of 2).

Only shown if ISU172 = 1 (conventional system). Use 0 for fossil fuel systems (equipment controls fan). Use 1 for electric systems (thermostat controls fan). Use 2 if stage 1 is radiant heating and stage 2+ is a hot water fan coil.

Only shown if ISU172 = 2.

13 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Table 3. Installer Setup Menu. (Continued)

ISU

Parameter

Number

200 Back-up Heat

210 External Fossil

220 CPH for 1st

230 CPH for 2nd

240 CPH for 1st

250 CPH for 2nd

260 CPH for 3rd

280 USU

300 Changeover 0

310 Deadband

320 USU

330 USU

340 Indoor Temp

342 Outdoor Temp

Installer Setup

Name

Source Applies to both Aux and EmHeat

Fuel Kit

Stage Cool/ Compressor

Stage Conventional Heat or Auxiliary

Stage Conventional Heat or 2nd Stage Auxiliary

Stage Heat

Continuous Backlight

Temperature Indication Scale01

Daylight Saving 0

Sensor

(Factory Defaults Shown in Bold) Notes

0 1

1-6E3—cph recommended for compressors

1-12E1—1 cph used for steam and gravity

21.5

32.0

42.5

53.0

63.5

74.0

84.5

95.0

1 2

0 1

Electric backup heat Fossil fuel backup heat

Auto Discover

Thermostat controls backup heat

External Fossil Fuel kit controls backup heat

1, 2, 4, 5, 6—other cycle rate settings Auto Discover

3—3 cph used for hot water system and high efficiency (90% or better) furnaces 5—5 cph used for standard fossil fuel forced air (less than 80% efficient) systems 9—9 cph used for electric furnaces 2, 4, 6, 7, 8, 10, 11, 12—other cycle rate settings Auto Discover

3—3 cph for hot water systems and high efficiency (90% or better) furnaces 5—5 cph for standard fossil fuel forced air (less than 90% efficient) systems 9—9 cph used for electric furnaces or electric auxiliary heat for heat pump systems 2, 4, 6, 7, 8, 10, 11, 12—other cycle rate settings Auto Discover

Backlight not on continuously. Thermostat backlight comes on with each key press.

Backlight is on continuously.

Manual

Auto

2°F 1.5°C

3°F 2.0°C

4°F 2.5°C 5°F 3.0°C 6°F 3.5°C 7°F 4.0°C 8°F 4.5°C 9°F 5.0°C Note: degrees C is not same as degrees F

Fahrenheit temperature display

Celsius temperature display

Disabled Enabled (US 1987)

Enabled (US 2007)

Thermostat location only

Remote indoor sensor(s) location(s) only Average between thermostat and sensor locations

None Yes

Auto Discover

Settings

Only shown if ISU172 = 2 and ISU176 = 1 or greater.

Only shown if ISU172 = 2 and ISU200 = 1.

Only shown if ISU174 = 2.

Only shown if ISU172 = 2 and ISU176 = 1 or higher. Default varies based on types of heating.

Only shown if ISU176 = 2 or for Heat Pump systems with 2 stages of Auxiliary Heat. Default varies based on types of heating.

Only shown if ISU176 = 3. Default varies based on types of heating.

If backlight is on continuously, it is low-intensity. Light changes to full brightness after pressing any key.

Auto Changeover allows user to choose heat, cool, off or auto. When set to Auto the thermostat will automatically choose heat or cool based on room temperature and heat/cool set points. Manual changeover allows the user to manually toggle between heat, cool and off.

Only shown if ISU300 = 0. The deadband indicates the minimum number of degrees that are allowed between the heat and cool settings when in 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.

Set to 0 in areas that do not follow daylight savings time.

Indoor temperature sensors will display the temperature at the sensor location or an average of two indoor temperature sensors, not including the temperature sensor in the thermostat. The temperature sensor in the thermostat is disabled when using remote indoor temperature sensor(s).

An outdoor temperature sensor is required for heat pump compressor lockout (ISU350), heat pump auxiliary lockout (ISU360), dual fuel heat pump balance point (ISU360) and Humidification with Frost Protection (ISU372).

68-0287—1 14

ISU

Parameter

Number

345 Dual Fuel Heat

346 Dual Fuel Heat

350 Heat Pump

360 Heat Pump

365 Discharge Temp

366 Zoning High

367 Zoning Low

368 Staging

369 Staging

370 Indoor Humidity

372 Indoor

Installer Setup

Name

Pump Control01

Pump Upstage to Furnace Timer

Balance Point (also compressor lockout) Temperature

Auxiliary Heat Lockout Temperature

Sensor

Temperature Limit

Discharge Temperature High Limit

Discharge Temperature Low Limit

Sensor

Humidification Control

0 30 45

5-15 10 -12 15 -9.5 20 -6.5 25 -4 30 -1 35 1.5 40 4.5 45 7 50 10 55 13 60 15.5

5-15 10 -12 15 -9.5 20 -6.5 25 -4 30 -1 35 1.5 40 4.5 45 7 50 10 55 13 60 15.5 65 18.5

0 1

160

0 110–170

0 35-50

110

0 80-130

0 50-60

2 E

0 1 3

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Table 3. Installer Setup Menu. (Continued)

(Factory Defaults Shown in Bold) Notes

Balance point only

Balance point plus 2° droop

Balance point/auxiliary heat lockout plus 2° droop.

Disabled 30 minutes 45 minutes

60 minutes

75 minutes

No heat pump compressor lockout

5°F -15.0°C 10°F -12.0°C 15°F -9.5°C 20°F -6.5°C 25°F -4.0°C 30°F -1.0°C 35°F 1.5°C 40°F 4.5°C 45°F 7.0°C 50°F 10.0°C 55°F 13.0°C 60°F 15.5°C (Show 1/2 degree C)

No heat pump auxiliary lockout

5°F -15.0°C 10°F -12.0°C 15°F -9.5°C 20°F -6.5°C 25°F -4.0°C 30°F -1.0°C 35°F 1.5°C 40°F 4.5°C 45°F 7.0°C 50°F 10.0°C 55°F 13.0°C 60°F 15.5°C 65°F 18.5°C (Show 1/2 degree C)

None Remote

Auto Discover

160°F (71°C)

Disabled 110°F to 170°F (43.5°C to 76.5°C)

160°F (71°C)

Disabled 35°F to 50°F (1.5°C to 10°C)

110°F (43.5°C)

Disabled 80°F to 130°F (26.5°C to 54.5°C)

55°F (13°C)

Disabled 50°F to 60°F (10°C to 15.5°C)

Disabled

Internal—sensor in thermostat

Remote Auto Discovered

Off Humidify with no Frost Protection Humidify with Frost Protection

Auto Discover

Settings

See Dual Fuel Heat Pump control on page 22.

Only shown for heat pump applications with an outdoor temperature sensor present.

Only Shown if ISU110 = 1 (Master Zone Controller) and Discharge Temperature Sensor is available.

Only Shown if ISU110 = 1 (Master Zone Controller) and ISU174 = 2 or more. Must have Discharge Temperature Sensor present.

Only Shown if ISU110 = 1 (Master Zone Controller) and ISU176 = 2. Must have Discharge Temperature Sensor present.

If there is a remote sensor installed and the setting is either auto discover or “remote” the internal thermostat humidity sensor is disabled. If set to “internal” the internal thermostat sensor is presented on the screen. If set to “disabled” the internal sensor and any remote sensors are disabled, there will be no humidity displayed and will have no humidification/ dehumidification control.

Shown only if ISU370 = 1, 2 or E.

15 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Table 3. Installer Setup Menu. (Continued)

ISU

Parameter

Number

374 Hum Fan Action 0

379 Dehumidification

383 Over-Cooling

384 Dehumidification

390 Southern

391 Southern

392 Southern

393 Southern

394 Southern

400 Ventilation control 0

401 Number of

402 Total house

403 Ventilation CFM 30-195 30–195 CFM in increments of 5

404 Max ventilation

405 Ventilation Fan

406 Ventilation in

Installer Setup

Name

Control

Limit

Fan Action

Dehumidification Away Mode

Dehumidification Away Mode Fan Setting

Dehumidification Away Mode Low Limit Temperature Setting

Dehumidification Away Temperature Setting

Dehumidification Away Dehumidification Setting

bedrooms

Sq. Ft.

percentage limit

Action

High Humidity01

(Factory Defaults Shown in Bold) Notes

1 2 3

1 3

10.5

21.0

31.5

1 2

70-80 70°F–80°F

70-99 70°F–99°F

55-70 55%–70% relative humidity

1 2

1-6 1–6 bedrooms

10-50 1000–5000 sq. ft. in increments of 100

30-60

100

Humidify only while fan or heat is on

Humidify will force fan on Humidify only when heat is on Humidifier operates independent of fan

None

Dehumidify with Air Conditioning Whole house Dehumidifier

1°F 0.5°C 2°F 1.0°C

3°F 1.5°C

(Show 1/2 degree C)

System fan turns on with dehumidifier

Dehumidifier operates independent of system fan

Yes

Fan Auto

Fan On Fan Circulate

Default = 76°F

Default = 85°F

Default = 65%

No ventilation

Ventilation on at all times Ventilation on except during sleep period

Default = 2

Default = 1000 sq. ft.

Default = 160 CFM

30%–60%

Default = 50%

unlimited

Vent on will force fan on also

Vent will not force fan ON

Off

Settings

Setting 0 will run the humidifier only during a call for heat or if the fan is running. Setting 1 will force the fan to run if there is a call for humidification. Setting 2 will humidify only during a call for heat. Setting 3 assumes the humidifier has it own internal fan and will not require the system fan or heat to be operating during a call for humidification.

Option 1 uses dehum terminal as a normally closed relay to wire to a low-speed fan terminal. Option 3 uses dehum terminal as a normally open

relay to wire to a whole-house dehumidifier.

Only shown if ISU379 = 1.

Only shown if ISU379 = 3.

Not shown if ISU379 = 0. ISU 391-394 will only be shown if ISU390 = 1.

If ISU391 = 1 or 2 to help remove condensation from the air handler and the A-coil, some humidity may be re-introduced into the living space.

The air conditioner will be allowed to cool the living space to this temperature to meet the humidity setting that set in ISU394.

The A/C will maintain this temperature provided the humidity setting is satisfied. This temperature setting can not be set lower than the temperature set in ISU

392.

Set the desired humidity level to maintain within the living space

If ISU300 = 0, ISU401-405 will not be shown.

The thermostat will determine if ventilation is meeting ASHRAE standard 62.2. The display will show a P above the setup number if the setting passes the ASHRAE standard, or F if it does not. Best practice is to move the setting down until F is displayed, then move up one setting to the minimum passing value.

Only shown if ISU372 and ISU400 are not set to 0. When set to On will use ventilation to remove humidity when thermostat is in the heat mode.

68-0287—1 16

ISU

Parameter

Number

500 USU

502 Furnace filter

510 USU

520 USU

530 USU

540 USU

580 Min Compressor

600 Heat Temp

610 Cool Temp

640 USU

650 Extended Fan on

660 Extended Fan on

670 USU

680 Temp Control

690 Temp Control

Installer Setup

Name

Furnace Filter Change Reminder

reminder run time equipment counts

Humidifier Pad Replacement Reminder

UV Lamp Replacement Reminder

Adaptive Intelligent Recovery

Number of Periods

Off Time

Range Stops

Clock Format 12

time Heat (Blower Off Delay Heat)

time Cool (Blower Off Delay Heat)

Keypad Lockout 0

Heat

Cool

Table 3. Installer Setup Menu. (Continued)

(Factory Defaults Shown in Bold) Notes

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

0 1 2 3

0 1 2

0 1 2 3 4

40-90 40°F–90°F (Show 1/2 degree C)

60-99 60°F–99°F (Show 1/2 degree C)

30 60 90 120

1 2

Disabled 10 R.T. Days 30 R.T. Days 60 R.T. Days 90 R.T. Days 120 R.T Days 180 R.T. Days 270 R.T. Days 365 R.T. Days 30 C Days 60 C Days 90 C Days 120 C Days 180 C Days 365 C Days

Auto Discover

Counts runtime Heat and Cool

Counts runtime Cool only

Disabled 90 C Days or 30 R.T. Days 180 C Days or 60 R.T. Days 365 C Days or 90 R.T. Days

Auto Discover

Disabled 365 Days 730 Days (2 years)

Auto Discover

Conventional

Adaptive

2 Periods

4 Periods

Off 1 minute 2 minutes 3 minutes 4 minutes

5 minutes

Default = 90°F

Default = 60°F

12 Hour

24 Hour

Off

30 seconds 60 seconds 90 seconds 120 seconds

Off

30 seconds 60 seconds 90 Seconds 120 Seconds

Unlocked

Partial Locked Full Locked

Less Aggressive temp control (may cause temp undershoot)

Standard (recommended)

More Aggressive temp control (may cause temp overshoot)

Less Aggressive temp control (may cause temp undershoot)

Standard (recommended)

More Aggressive temp control (may cause temp overshoot)

Settings

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Display will show Calendar Days if ISU372 = 0; Run Time Days if ISU372 = 1 or 3.

See Temperature Recovery on page 31.

2 periods = Wake and Sleep. 4 periods = Wake, Leave, Return, and Sleep.

This can be used to remove condensation from A-coil; however, could re-introduce humidity into the living space.

17 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

DONE

Table 3. Installer Setup Menu. (Continued)

ISU

Parameter

Number

700 Temperature

701 Humidity Display

710 Restore Factory

Installer Setup

Name

Display Offset-3-2

Offset

Defaults

(Factory Defaults Shown in Bold) Notes

-3°F -1.5°C

-2°F -1°C

-1 0

1 2 3

-5

-4

-3

-2

-1

1 2 3 4 5

-1°F -.5°C 0°F 0. °C — (no difference in displayed temperature and actual room temperature) 1°F .5°C 2°F 1°C 3°F 1.5°C

-5%

-4%

-3%

-2%

-1%

1% 2% 3% 4% 5%

Yes

Settings

Restoring factory defaults will re-set installer setup and programming.

INSTALLER SYSTEM TEST

Use the Installer System Test to test the heating, cooling and fan (and emergency heat for heat pump systems).

CAUTION

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

Avoid cycling compressor quickly.

How to Use the Installer System Test

The Installer Test is part of the Installer Setup Menu.

1. Enter the Installer System Test by entering the Installer

Setup.

2. Note that the test appears at the end of the Installer

Setup Numbers.

3. See Fig. 28 to review how the thermostat buttons are

used during the Installer System Test. See Table 6 for available Installer System Tests.

4. If installed with a Discharge Air Temperature Sensor

(ISU365=1) press the “MORE” button to view the discharge temperature, and press Cancel to return to the Installer test screen.

SYSTEM TEST NUMBER

DONE KEY

EXITS INSTALLER SYSTEM TEST

SYSTEM STATUS NUMBER

UP ARROW KEY

ADVANCES TO NEXT SYSTEM TEST NUMBER

UP ARROW

TURNS THE SYSTEM ON

DOWN ARROW

TURNS THE SYSTEM OFF

M22428

Fig. 28. Review thermostat buttons used during Installer

System Test.

68-0287—1 18

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Installer System Tests

Table 4. Installer System Test.

System Test Number Test Type ISU Value System Status Number and Description

Test 1 Installer Test Cool 0

1 2

Test 2 Installer Test Fan 0

Test 3 Installer Test Heat 0

1 2 3 4

Test 4 Emergency Heat Test 0

1 2

Test 5 Installer Test Humidifier 0

Test 6 Installer Test Dehumidifier 0

Test 7 Installer Test Ventilator 0

Err Diagnostic Recall 00-99 See “Communication Error Codes” on page 34

Press the Next button to go to the beginning of the Installer Setup or press the Done button to exit the Installer System Test.

Off

Cool Stage 1 Cool Stages 1 & 2

Off

Fan On

Off

Heat Stage 1 Heat Stages 1, 2 Heat Stages 1,2,3 Heat Stages 1,2,3,4

Off

AUX Heat Stage 1 AUX Heat Stages 1 and 2

Off

Humidifier On

Off

Dehumidifier On

Off

Ventilator On

When VisionPRO® IAQ is used in a zoning system you must exit the installer test on one thermostat before entering the installer test on another thermostat.

OPERATION

Thermostat Keys

SYSTEM

SELECTS EM. HEAT/HEAT/OFF/COOL

FAN

SELECTS ON/AUTO/CIRC

TUE

FAN

Inside

AUTO

SYSTEM

HEAT

COOL

SCHED HOLD CLOCK SCREEN MORE

SCHED

ENTERS SCHEDULING MODE

HOLD

SETS A PERMANENT HOLD AND ACTIVITIES VACATION HOLD

CLOCK

SETS THE TIME FORWARD OR BACK

DOWN ARROW

LOWERS TEMPERATURE SETTING

UP ARROW

RAISES TEMPERATURE SETTING

Set To

Following Schedule

Humidity

SHOWS ADDITIONAL ACCESSORY AND MAINTENANCE OPTIONS

SCREEN

LOCKS OUT THE SCREEN TO ALLOW FOR CLEANING

M23500

Thermostat Display

TUE

SHOWS CURRENT DAY OF THE WEEK

FAN

SHOWS FAN

SETTING

FAN

Inside

AUTO

SYSTEM

EM HEAT

HEAT

OFF

COOL

SCHED HOLD CLOCK SCREEN MORE

SYSTEM

SHOWS CURRENT SYSTEM POSITION

TIME

DISPLAY CURRENT TIME OF DAY, HOLD TIME REMAINING OR NUMBER OF VACATION DAYS REMAINING

INSIDE TEMPERATURE

SHOWS THE CURRENT INSIDE TEMPERATURE

SET TO TEMPERATURE

SHOWS THE CURRENT SET TEMPERATURE

Set To

Following Schedule

A M

Humidity

FOLLOWING SCHEDULE

SHOWS THE THERMOSTAT IS FOLLOWING THE PROGRAMMED SCHEDULE

M23501

19 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

System and Fan Settings

System

The System key selections vary based on your heating and/or cooling system type.

Heat — Thermostat controls the heating system.

Off — Both heating and cooling systems are off.

Cool — Thermostat controls the cooling system.

Auto — Thermostat automatically changes between heating

and cooling operation, depending on indoor temperature.

Em. Heat — Emergency heat cycles to maintain temperature. Compressor is locked out and auxiliary heat turns on as needed.

Fan

The Fan key selections vary based on the heating and/or cooling system type.

On — Fan runs continuously. Use this setting for improved air circulation or for more efficient central air cleaning.

Auto — fan follows the fan program schedule. Circ — fan runs randomly approximately 35% of the time. Use

this setting for improved air circulation or for more efficient central air cleaning when you do not want the fan running continuously.

Control Humidification Level

The VisionPRO® IAQ Touchscreen Thermostat reads the inside humidity level and allows for a humidification setting with or without frost protection. Humidification will only take place when the thermostat is in Heat mode or in Auto mode when the previous call was a call for heating.

WITH FROST PROTECTION

Controlling humidification with frost protection requires an outdoor temperature sensor. The Frost Index (scale 1–10) will limit the amount of humidity added to the air based on outdoor temperature, with 1=most dry and 10=most humid. This prevents frost from accumulating on windows.

1. Press the More key until the inside humidity level set-

point is shown.

2. Use Up and Down arrow keys, located to the right of the

humidity setpoint, to set desired humidity level.

3. Press Done key.

Control Dehumidification Level

The VisionPRO® IAQ Touchscreen Thermostat reads the inside humidity level and allows for a dehumidification setting, and can be set to dehumidify using the air conditioner or a whole house dehumidifier.

CURRENT INDOOR HUMIDITY

Inside

DONE CANCEL

DEHUMIDIFIER SETTING (AUTO/OFF)

With Air Conditioner

The set range for dehumidification is 40 to 80%, and can be set in 5% increments. The thermostat must be in Cool mode or Auto mode when the previous call was a call for cooling.

Inside

DEHUMIDIFIER

Humidity

HUMIDITY SET POINT

M23496

Inside

HUMIDIFIER

Humidity

DONE

CANCEL

M23518

WITHOUT FROST PROTECTION

The frost setpoint is not displayed, but a humidity setpoint can still be set.

68-0287—1 20

DEHUMIDIFIER

DONE CANCEL

M23514

Dehumidifying in this manner runs the air conditioner longer than simply cooling the house would require, and can be set to run 1, 2, or 3°F below the temperature setpoint. This feature is called Dehumidification Droop Control.

NOTE: You must use this setting if:

— No powered, whole house dehumidifier is present,

and

— The system uses the air conditioner as the

dehumidifier.

DEHUMIDIFICATION DROOP CONTROL

In extremely high humidity conditions, the thermostat keeps the air conditioner running (energizing Y/Y2 and G) for up to 3°F below the temperature setpoint. It does this while trying to achieve the desired humidity setpoint and balancing that with the temperature setpoint. The thermostat controls up to 3° F below the temperature setting until either the humidity setpoint is satisfied or conditions change.

With Whole House Dehumidifier

Controls humidity levels in the house by dehumidifying without the use of the air conditioner. This setting requires a dedicated unit for dehumidification. Dehumidification with a whole house dehumidifier will take place when the thermostat is in the Cool, Off, Auto, Heat or Em.Heat modes. If the system is installed with a whole house humidifier, dehumidification with a whole house dehumidifier will only take place when the thermostat is in Cool, Off or Auto modes (Auto only if the previous call was a call for cooling).

When controlling a whole-house dehumidifier the user can toggle between auto (dehumidify when needed based on setpoint and current humidity level) and off (see Fig. 29).

Inside

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

DONE

M23520

Ventilation occurs two ways:

AUTOMATIC

Uses installer setup to determine amount of ventilation required based on house and equipment size. To disable automatic ventilation, switch the ventilation setting to Off. The user can still use the timer to request ventilation.

ON DEMAND

User can also set a vent timer that will circulate fresh air into the home for a set period of time from 20 to 180 minutes in 20minute increments. The vent timer is enabled whether ventilation is set to “Auto” or “Off.”

DEHUMIDIFIER

Humidity

DONE CANCEL

M23515

Fig. 29. Display when controlling a whole-house

dehumidifier.

1. Press the More key until the inside humidity percent and

dehumidification setpoint are shown.

2. Use Up and Down arrow keys, located to the right of the

dehumidifier setpoint, to set desired humidity level for dehumidification in the summer.

3. Press Done key.

Ventilation Control

Ventilation setup options include ISUs 400, 401, 402, 403, and

404. Combined, these will determine a percentage of

maximum ventilation limit. The thermostat will calculate whether or not this level of ventilation meets ASHRAE standard 62.2. If ASHRAE 62.2 is met a P will appear in the display above the setup number. If ASHRAE 62.2 is not met an F will appear in the display above the setup number.

Passing ASHRAE 62.2 is only applicable when vent is running. For example, if installer has set to not vent during sleep period, ASHRAE 62.2 would be met at all times except during sleep period.

VENT

Minutes

DONE CANCEL

M23519

VENTILATION IN HIGH HUMIDITY CONDITIONS (SETUP FUNCTION 0406)

If Ventilation Control is available (setup function 0400 set to 1 or 2), this allows the ventilation equipment to turn on if the humidity rises approximately 10% above the RH setting in heating mode to exhaust the extra humidity.

HEAT PUMP OPERATION

Heat Pump LED Indication

A red LED indication is located in the upper right corner of the thermostat. It is only visible when lighted.

When the L terminal is wired to an equipment monitor, the LED signals when a check or fail signal is sent to the thermostat from the system. This is operational in the Heat, Off, Cool or Auto positions.

21 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Heat Pump Emergency Heat LED Indication

The thermostat uses a red LED indicator that lights when the thermostat is in the Emergency Heat mode. The LED is located in the upper right corner of the thermostat. It is visible only when on.

Heat Pump Temperature Lockouts

Dual Fuel Heat Pump and Outdoor Temperature Sensor

In this operation, there is no external fossil fuel kit (dual fuel kit) installed; the thermostat controls this function.

1. Choose correct heat pump application in Installer Setup

Number 0172.

2. Choose Fossil Fuel Option as the backup heat source

in Installer Setup Number 0200.

3. Choose No External Fossil Fuel Kit Option is control-

ling back up heat in Installer Setup Number 0210.

4. Choose Outdoor Temperature Sensor for Heat Pump Temperature Lockouts in Installer Setup Number 0342.

5. Choose appropriate Balance Point Temperature in

Installer Setup Number 0350.

Dual Fuel Heat Pump Control

Balance Point Only (ISU345 = 0)

NOTE: System must have an outdoor temperature sensor.

When the outdoor temperature is above the selected balance point temperature, only the compressor operates and the fan (G terminal) energizes when the thermostat calls for heat. See Fig. 30. When the outdoor temperature is below the selected balance point temperature, only the fossil fuel (auxiliary heat) operates and the fan (G terminal) does not energize when the thermostat calls for heat.

COMPRESSOR ONLY

FOSSIL FUEL ONLY

OUTDOOR TEMPERATURE

BALANCE POINT

M22441

Balance Point/Auxiliary Heat Lockout Plus 2° Droop (ISU 345 = 2)

When the outdoor temperature is above the Auxiliary Heat Lockout Temperature only the compressor operates; below the balance point temperature (setup function 0360) only the fossil fuel operates. Between the balance point temperature and auxiliary heat lockout temperature the compressor will operate. However, the fossil fuel will turn on if the room temperature droops approximately 2°F below the temperature setting, compressor will be disabled.

COMPRESSOR ONLY

OUTDOOR TEMPERATURE

COMPRESSOR+2 °F DROOP UPSTAGE TO FURNACE

FURNACE ONLY

AUX. LOCKOUT

BALANCE POINT

M23497

Fig. 31. Balance Point with Auxiliary Lockout Temperature.

AUXILIARY LOCKOUT FOR ELECTRIC HEAT BACKUP

Heat Pump systems with electric heat backup can select a compressor lockout temperature (function 0350) and/or auxiliary heat lockout temperature (function 0360). When the outdoor temperature is below the compressor lockout temperature, only the auxiliary heat operates. When the outdoor temperature is between the compressor and auxiliary lockout temperatures, both the compressor and auxiliary heat can operate.

NOTE: System must have an outdoor temperature sensor.

Heat Pump with Electric Auxiliary (Backup) Heat and Outdoor Temperature Sensor

1. Choose correct heat pump application in Installer Setup

Number 0172.

2. Choose Electric as Auxiliary (Backup) Heat Source in

Installer Setup Number 0200.

3. Choose Outdoor Temperature Sensor in Installer

Setup Number 0342.

4. Choose Compressor Lockout Temperature in Installer

Setup Number 0350.

5. Choose Auxiliary Lockout Temperature in Installer

Setup Number 0360.

Fig. 30. Dual Fuel Heat Pump Operation in Heat mode with

Balance Point Set.

Balance Point Plus 2° Droop (ISU345 = 1)

The fossil fuel will turn on when the outdoor temperature is above the balance point if the room temperature droops approximately 2 degrees below the temperature setting, and the compressor will be disabled.

68-0287—1 22

NOTE: There is a 5°F deadband between the Compressor

and Auxiliary Heat Lockout Temperatures.

Operation in Heat Mode

When the outdoor temperature is below the Compressor Lockout Temperature, only the Auxiliary Heat operates.

When the outdoor temperature is above the Auxiliary Lockout Temperature, only the Compressor operates. See Fig. 32.

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Operation in Emergency Heat Mode

COMPRESSOR ONLY

BOTH COMPRESSOR AND

AUXILIARY HEAT

AUXILIARY ONLY

OUTDOOR TEMPERATURE

AUXILIARY LOCKOUT TEMPERATURE

COMPRESSOR LOCKOUT TEMPERATURE

M19950

Fig. 32. Heat Pump Operation with Lockout

Temperatures Set.

When the outdoor temperature is between the two temperatures, both the Compressor and Auxiliary Heat operate.

Table 5. Sequence of Operation for Conventional Systems.

System Setting Fan Setting Call for Action Energize Terminals Screen Message

Off Auto None None None Cool or Auto Auto None None None Cool or Auto Auto Stage 1 Cooling Y, G Cool On Cool or Auto Auto Stage 1 and Stage 2 cooling

Heat or Auto Auto None None None Heat or Auto Auto Stage 1 heating

Heat or Auto Auto Stage 1 and Stage 2 heating

Heat or Auto Auto Stage 1, Stage 2 and Stage 3 heating

G energizes only if Installer set up number 180 is set to Option 1 (Electric Heat).

If installer setup (ISU174) is configured for two stages of cooling.

If installer setup (ISU 176) is configured for two or more stages of heating.

If installer setup (ISU 176) is configured for three stages of heating.

G energizes only if Installer set up number 180 is set to Option 1 (Electric Heat) or 2 (Hot water coil).

Once the thermostat is placed into the Emergency Heat mode, the compressor and auxiliary lockout features are turned off. In the Emergency heat mode, the compressor is locked out. The first stage of heat is whatever is connected to the AUX terminal. The second stage of heat is connected to the AUX2. terminal.

Operating Sequence

The thermostat energizes specific terminal(s), depending on the demand for heating, cooling or fan. The thermostat screen shows the time, inside temperature, system and fan selections. Additional indicators are shown when the heating, cooling or fan is energized. See Table 5 and 6 for specification information.

, G

Y, Y 2

W1, G

W1, W2c, G

W1, W2

, W3d, G

Cool On

Heat On

Table 6. Sequence of Operation for Heat Pump Systems.

System Setting Fan Setting Call for Action Energize Terminals Screen message

Off Auto none

Cool or Auto Auto none

Cool or Auto Auto Stage 1 cooling

Cool or Auto Auto Stage 1 and Stage 2 cooling

Heat or Auto Auto none

Heat or Auto Auto Stage 1 heating

Heat or Auto Auto Stage 1 and Stage 2 heating

Heat or Auto Auto Stage 1, Stage 2 and Stage 3 heating

Heat or Auto Auto Stage 1, Stage 2, Stage 3 and Stage 4 heating

Em.Heat

Configure O/B in Installer Setup. Based on last piece of equipment called (cooling = O or Heating = B).

Red LED is on. See LED indication section for more details (page 21).

If installer setup (ISU 174) is configured for 2 compressor stages.

If installer setup (ISU 176) is configured for one or more stages of Auxiliary Heat.

If installer setup (ISU 176) is configured for two stages of Auxiliary Heat.

If thermostat is controlling backup heat, see temperature lockout section (page 22).

Auto None

Auto Stage 1 Heating

Auto Stage 1 and Stage 2 heating

O/B

Y, G, O/B

Y, Y 2c, G, O/B

O/B

Y, G, O/B

Y, Y 2

Yf, Y2

O/B

AUX

, G, O/B

c,f

, Y2

, AUXd, G, O/B

c,f

, AUXd, AUX2e, G, O/B

, G, O/B

, AUX2e, G, O/B

None

Cool On

None

Heat On

Aux Heat On

None

Aux Heat On

23 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Table 7. Indoor Air Quality Operation.

Last call

System Setting Call For Action

Auto Humidification

Auto Dehumidification

HUM1 and HUM2 Close

Nothing

DHM1 and DHM2 close

DHM1 and DHM2 opencYc and G

None

Auto Ventilation VNT1 and VNT2 Close VNT1 and VNT2 Close None Heat or Em.Heat Humidification HUM1 and HUM2 Close NA None

Heat or Em.Heat Dehumidification

VNT1 and VNT2 Close

NA None

Heat or Em.Heat Ventilation VNT1 and VNT2 Close NA None Cool Humidification NA

Cool Dehumidification NA

Nothing

DHM1 and DHM2 close

DHM1 and DHM2 open

None

cYc

and G

Cool Ventilation NA VNT1 and VNT2 Close None

Humidification only operates in heating or when last call was for heating.

Dehumidification only operates in cooling or when last call was for cooling.

Must be set up in installer setup (ISU 379) for dehumidification with air conditioning.

Installer setup (ISU 406) must be setup for Ventilation in high humidity or nothing will happen.

Only with whole house dehumidifier.

Multi-Stage Heat and Cool Control

In a multi-stage system, while maintaining setpoint, several factors affect when the next stage energizes, such as load conditions, environmental conditions, P+I control, and home insulation. The next stage energizes when the thermostat senses the previous stage is running at 90% capacity. This operation is droopless control.

User Setup

Follow these steps to enter the User Setup:

1. Press and release the System key.

TUE

CHANGE FILTER UV LAMP HUMIDIFIER PAD

Inside

SYSTEM

EM HEAT

OFF

COOL

DONE CANCEL

Set To

Following Schedule

Humidity

Energize

terminalsHeat Cool

FAN

Inside

AUTO

SYSTEM

EM HEAT

OFF

COOL

SCHED HOLD CLOCK

THU

Following

Schedule

A M

Humidity

SCREEN

M23502

2. Press and hold the center blank key for approximately five seconds until the screen changes.

68-0287—1 24

M23503

3. Release the center blank key when the screen on the

thermostat matches the screen below.

DONE

M22440

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

DONE

MON

THUSASUN

4. See the screen below to review how the thermostat keys

are used during the User Setup. See Table 8 for the User Setup numbers and settings.

ADVANCE TO NEXT

USER SETUP NUMBER

PRESS TO EXIT USER SETUP

USER SETUP

CURRENT SETTING

CHANGE THE CURRENT SETTING

M19922

5. Press the Done key to exit the User Setup screen.

Table 8. User Setup Menu.

User

Setup

120 Date (Year

130 Date (Year

140 Date (Month) 1-12 Select number that represents current

150 Date (Day) 1-31 Select number that represents current

160 Schedule

165 Restore Energy

280 Continuous

320 Temperature

330 Daylight Saving 0

400 Ventilation

User Setup

No.

Name Settings

Upper)

Lower)

Options

Star Schedule01NoYes

Backlight

Indication Scale

control

21 01-99 Default = 06

calendar month.

Default = 06

calendar date.

Default = 15

40Seven-day programmable

Non-programmable

01Backlight not on continuously.

Thermostat backlight comes on with each key press.

Backlight is on continuously.

01Fahrenheit temperature display

Celsius temperature display

Disabled

Enabled (US 1987)

Enabled (US 2007)

No ventilation

Ventilation on at all times

Ventilation on except during sleep period

Table 8. User Setup Menu. (Continued)

User

Setup

500 Furnace Filter

510 Humidifier Pad

520 UV Lamp

530 Adaptive

540 Number of

640 Clock Format 122412 Hour

670 Keypad

No.

Change Reminder

Replacement Reminder

Intelligent Recovery

Periods

Lockout

User Setup

Name Settings

Disabled

10 R.T. Days

30 R.T. Days

60 R.T. Days

90 R.T. Days

120 R.T Days

180 R.T. Days

270 R.T. Days

365 R.T. Days

30 C Days

60 C Days

90 C Days

120 C Days

180 C Days

365 C Days

Auto Discover

Disabled

90 C Days

180 C Days

365 C Days

Auto Discover

Disabled

365 Days

730 Days (2 years)

Auto Discover

01Conventional

Adaptive

242 Periods

4 Periods

24 Hour

Unlocked

Partial Locked

Full Locked

PROGRAMMING

Preprogrammed Energy Star Settings

Table 9 shows default program settings. Visit the Energy Star web site at www.energystar.gov resources on programmable touchscreen thermostats.

Table 9. Energy Star Default Program Settings.

Schedule

Period Time

Wake 6:00AM 70°F (21°C) 78°F (25.5°C) Auto

Leave 8:00AM 62°F (16.5°C) 85°F (29.5°C) Auto

Return 6:00PM 70°F (21°C) 78°F (25.5°C) Auto

Sleep 10:00PM 62°F (16.5°C) 82°F (28°C) Auto

for additional education and

Setpoints

Fan

SettingHeat Cool

Program Heating and Cooling Schedule

Your thermostat can control up to four different schedule periods per day: Wake—Period when you awaken and want your home at a comfortable temperature. Leave—Period when you are away from home and want an energy-saving temperature. Return—Period when you return home and want your home

25 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

SCHED

HOLD

back to a comfortable temperature. Sleep—Period when you are asleep and want an energysaving temperature.

NOTE: Schedule times are in 15-minute intervals.

Edit Schedule

1. Press Sched key.

TUE WED THU FRI SAT SUN

MON

OK TO PICK MULTIPLE DAYS

FAN

AUTO

CIRC

CANCEL PERIOD

HEAT

FAN

Inside

AUTO

SYSTEM

HEAT

SCHED HOLD CLOCK SCREEN

2. Press Edit key.

TUE WED THU FRI SAT SUN

MON

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

FAN

Inside

AUTO

SYSTEM

EM HEAT

HEAT

OFF

COOL

AUTO

SCHED

DONE

EDIT

FRI

Set

Set To

CANCEL PERIOD

HOLD

CLOCK SCREEN

WAKE

LEAVE RETURN SLEEP CANCEL

Following Schedule

Humidity

Following Schedule

M23504

HEAT

COOL

M22553

DONE WAKE LEAVE RETURN SLEEP CANCEL

COOL

M19955

4. Press Wake key. Once pressed, Wake flashes to show it

is selected.

5. Press Up and Down keys to modify time and heat and

cool temperatures from this screen.

NOTE: The Fan setting can be programmed for On, Auto, or

Circ for each period selected. See Fan Schedule section for more information.

6. Press Leave key and repeat step 5.

7. Press Return key and repeat step 5.

8. Press Sleep key and repeat step 5.

9. When complete, press Done key. “Saving Changes”

appears on the screen to indicate changes are being saved to the day(s) modified.

TUE WED THU FRI

MON

SAVING

CHANGES

3. It is OK to pick multiple days. Select any combination of days to edit. These days are scheduled with the same times and temperatures. Check marks appear next to days selected.

68-0287—1 26

M19956

NOTE: To set a Program Schedule for the remaining days of

the week, repeat steps 1–9. Example: If Mon–Fri was selected first, go back and repeat steps 1–9 for Sat and Sun.

10. To exit schedule without saving changes, press Cancel

key any time.

Cancel a Schedule Period

1. Press Sched key.

2. Press Edit key.

3. Select the Day(s) of the week desired.

4. Press schedule period you want to cancel (Wake, Leave,

Return or Sleep). Once selected, the period flashes.

5. Press Cancel Period key.

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

SCHED

HOLD

SCHED

HOLD

TUE WED THU FRI SAT SUN

MON

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

FAN

AUTO

SYSTEM

EM HEAT

HEAT

OFF COOL AUTO

DONE

Inside

SCHED

CANCEL PERIOD

HOLD

WAKE

Set To

Following Schedule

CLOCK SCREEN

LEAVE RETURN SLEEP CANCEL

HEAT

COOL

M22446

6. The time, temperature(s) and fan setting disappear. The

bar above the selected period is removed, indicating the scheduled period was cancelled.

NOTE: To reinstate a schedule period, press arrow keys to

set desired time and temperatures.

TUE WED THU FRI SAT SUN

MON

OK TO PICK MULTIPLE DAYS

FAN

HEAT

COOL

DONE WAKE LEAVE RETURN SLEEP CANCEL

M19957

7. Press Done key.

Fan Schedule

Press Fan key while in the Scheduling Screen to program the System Fan. Choices available from the Scheduling Screen: Auto (default position)—fan runs with equipment. Programmable for all schedule periods (Wake, Leave, Return and Sleep). On—fan runs continuously (programmable for all schedule periods). Circ—fan runs randomly for approximately 35% of schedule period (programmable for all schedule periods).

TUE WED THU FRI SAT SUN

MON

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

FAN

Inside

AUTO

SCHED

CANCEL PERIOD

HOLD

WAKE

SYSTEM

EM HEAT

HEAT

OFF COOL AUTO

DONE

Set To

Following Schedule

CLOCK SCREEN

LEAVE RETURN SLEEP CANCEL

HEAT

COOL

M22447

Fan Control

If the Fan program is scheduled, Auto is shown and any programmable mode that is set; for example, if during Wake period, Fan is set to Auto, only Auto is shown in the Fan area. However, if during the Wake period, fan is scheduled to On, both Auto and On are shown. Auto indicates fan is running its schedule; On indicates Fan schedule is set to On.

THU

FAN

Inside

AUTO

SYSTEM

HEAT

COOL

SCHED HOLD CLOCK SCREEN

Set

Following Schedule

Humidity

M23505

Table 10. Fan Program Operation and Screen Status.

Fan

Setting

Fan

Program

Schedule

Call

for

Action

Energize Ter min al

Status

shown on

Screen

Auto Auto None None Auto

Auto On Fan G Auto/On

Auto Circ None None Auto/Circ

Auto Circ Fan G Auto/Circ

Manual Override of Fan Schedule

Auto—fan is automatically following the Fan schedule (choices are Auto, On or Circulate).

On—overrides Fan schedule. Fan is continuously On. Circ—overrides Fan schedule. Fan circulates randomly for

approximately 35% of time until the Auto position is selected.

Table 11. Manual Override of Fan Schedule Operation.

Screen

Fan

Setting

Schedule

Override

Setting

Call

for

Action

Energize Ter min al

Auto On Fan G On

Auto Circ None None Circ

Auto Circ Fan G Circ

Auto

—— —

On Circ None None Circ

On Circ Fan G Circ

Circ

Auto

—— —

Circ On Fan G On

Auto Override resumes the Fan Program in each schedule

period (Wake, Leave, Return and Sleep)

Message

Under

Fan

Setting

27 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

OPERATE VISIONPRO® IAQ

Set Time

1. Press Clock.

2. Use arrows to set current time.

TUE

DONE CANCEL

M19958

3. Press Done key.

IMPORTANT

The current day of the week should already be set correctly. If not, see Installer Setup to set the day.

Set Temperature Overrides

The thermostat has four temperature override options: Hold Temperature Until, Permanent Hold, Vacation Hold, and Southern Dehumidification Away Setting.

HOLD TEMPERATURE UNTIL (TEMPORARY HOLD)

Holds temperature temporarily until the next scheduled period time or until the time the user sets.

1. Press Up or Down arrow next to the temperature you

want to adjust. “Hold Temperature Until” time appears on the screen. The Hold Temperature Until time defaults to the start time of the next scheduled period.

NOTE: The Time Up and Down arrows are shown for approx-

imately seven seconds. Pressing on the screen time (where the Hold Temperature Until time is shown) allows the arrows to reappear.

2. Press Up or Down arrow next to the Time key to set

desired time for the thermostat to resume schedule.

3. Press the Cancel or Sched key to cancel “Hold

Temperature Until” and resume schedule.

NOTE: Once “Hold Temperature Until” time is reached, the

thermostat shows “Following Schedule” on the screen to indicate that “Temporary Hold” has ended.

PERMANENT HOLD

Permanent Hold changes the temperature setting until Permanent Hold is cancelled.

1. Press Hold key. “Permanent Hold” appears on the

screen.

2. Press Up or Down arrow next to the temperature you

want to set during “Hold.”

TUE

FAN

Inside

AUTO

SYSTEM

COOL

Permanent

Hold

SCHED HOLD CLOCK SCREEN

Set To

Humidity

CANCEL

M23507

3. Press Cancel key to cancel “Permanent Hold” and

resume the schedule.

VACATION HOLD

Changes temperature setting for a designated number of days.

1. Press the Up and Down arrow keys to set the desired

temperature while away on vacation. Notice that “Hold Temperature Until” time is shown on the screen. (This is the time the Vacation Hold override expires after the number of days ends.)

2. Press Hold key twice. Screen shows “Hold Temperature

Until” one day.

3. Press Up and Down arrow keys to change the number of

Days you desire thermostat to override the schedule.

NOTE: Days Up and Down arrows appear for approximately

seven seconds. Pressing just below Hold Temperature Until on the screen allows the Days Up and Down arrows to reappear.

TUE

FAN

Inside

AUTO

SYSTEM

Hold Temperature

Until

COOL

SCHED HOLD CLOCK SCREEN

68-0287—1 28

Set

Humidity

CANCEL

M23506

FAN

Inside

AUTO

SYSTEM

Hold Temperature

HEAT

OFF

COOL

Until

SCHED CLOCK SCREEN

THU

Set To

DAYS

Humidity

CANCEL

M23508

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

4. To cancel the Vacation Hold override early, press the

Cancel key.

NOTE: When the number of days of Vacation Hold expires,

the screen shows “Following Schedule” to indicate that Vacation Hold has ended.

SOUTHERN DEHUMIDIFICATION AWAY SETTING

Southern Dehumidification Away Setting is an option that only appears if ISU number 390 is set to yes. It can be used to maintain the desired humidity level and temperature in the living space while away for extended periods of time. See ISU Numbers 390–394 for more information.

FRI

FAN

AUTO

SYSTEM

HEAT

COOL

Inside

Permanent

Hold

Set To

DEHUMIDIFIER

CANCEL

M23521

1. Press Hold three times to enter the Southern Dehumidifi-

cation Away Setting.

2. These settings can only be changed in installer setup.

Clean Thermostat Screen

The thermostat has a touch screen interaction. Follow these steps to clean the screen without making thermostat changes:

1. Press the Screen key. Thermostat locks out all touch

keys for 30 seconds to allow for cleaning.

4. Press the Done key to return to the Home Screen and

normal operation.

Screen Locks

TUE

FAN

Inside

AUTO

SYSTEM

COOL

SCHED HOLD CLOCK SCREEN MORE

Partially Locked Screen

When partially locked, the screen indicates Screen Locked for 5 to 7 seconds whenever the user attempts to press a key that is locked. Pressing a locked key, while Screen Locked is shown, flashes “Screen Locked” on the screen.

In this mode, all keys are locked except the Temperature Up and Down arrow keys:

— User can change temperature up or down but cannot

change schedule settings.

— Temporary temperature change lasts until next scheduled

period and that time shows on screen.

— To cancel temperature override and begin following

schedule, press Cancel key.

— To unlock screen, see Installer Setup section.

Fully Locked Screen

In this mode, all keys are locked and not functional. To unlock screen, see Installer Setup section. The screen continuously displays “Screen Locked.”

SCREEN LOCKED

Set

Following Schedule

Humidity

M23509

OK TO

CLEAN

SCREEN

M19964

2. Use damp cloth slightly moistened with water or house-

hold glass cleaner to clean the screen.

3. Repeat the above steps, as necessary.

IMPORTANT

Do not spray any type of liquid directly on the thermostat itself. If using household glass cleaner, spray cleaner on cloth. Then use a cloth to clean the thermostat screen.

Humidification Control

If you have a humidifier and outdoor temperature sensor, you can use Frost Control to reduce window condensation.

1. Press MORE until the humidifier screen is displayed.

2. Press the Up or Down arrow to set the humidity and

Frost Control level. (Use a lower Frost Control level if frost appears on windows. Use a higher setting if the air is too dry.)

3. Press DONE to save and exit, or press CANCEL to exit

without saving changes.

NOTE: If you do not have an outdoor temperature sensor, the

Frost Control level will not be displayed.

Dehumidification Control

If installed to control a dehumidifier, the thermostat can activate it as needed to reduce humidity.

29 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

MON

WED

THU

FRISSAA

HEAT

SCHED

HOLD

SCHED

HOLD

SCHED

HOLD

If you don’t have a dehumidifier, the thermostat activates the air conditioner to reduce humidity (may cool as much as 3°F lower than your temperature setting).

1. Press MORE until the dehumidifier screen is displayed.

2. Press the Up or Down arrow to set the desired humidity

level and operation (Auto or Off).

3. Press DONE to save and exit, or press CANCEL to exit

without saving changes.

Ventilation Control

You can ventilate your home at any time:

1. Press MORE until the ventilation screen is displayed.

2. Press the Up or Down arrow to set the ventilation timer.

You can set the timer to ventilate from 20 to 180 minutes, in 20-minute increments. To turn off the ventilator, select

3. Press DONE to save and exit, or press CANCEL to exit

without saving changes.

If programmed for auto-ventilation by the installer, the thermostat will ventilate your home as needed.

Indoor Air Quality Reminders

Filter Change Reminder

The filter change reminder must be turned on from the Installer Setup. Once expired, the screen flashes, “Change Filter” and a Reset key appears. Press the Reset key to reset the change reminder. The installer can configure the Filter Change Reminder to display remaining run-time or calendar days.

1. Press the More key until the filter reminder appears on

the screen. This is the number of fan run-time or calendar days remaining on the filter reminder.

TUE WED THU FRI SAT SUN

MON

CHANGE FILTER UV LAMP HUMIDIFIER PAD

RESET

DAYS

SCHED

HOLD

CLOCK SCREEN MORE

DONE

WAKE

LEAVE RETURN SLEEPEDIT CANCEL

M22449

2. Press the Edit key.

3. Use the Up and Down keys to change the number of run-

time or calendar days.

TUE WED THU FRI SAT SUN

MON

CHANGE FILTER UV LAMP HUMIDIFIER PAD

DAYS

TUE WED

MON

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

CHANGE FILTER UV LAMP HUMIDIFIER PAD

FAN

Inside

AUTO

SYSTEM

RESET

HEAT

COOL

SCHED HOLD CLOCK SCREEN MORE

THU

FRI

Set To

Following

Schedule

Humidity

NOTE: When using run-time days, the days are counted as

fan run time, so anytime the fan is running, the reminder is counting that time against the number of days selected.

The remaining days can be viewed by pressing the More key; the remaining days can be edited using the More key or from the Installer Setup. To view or reset the reminder before it expires, follow these steps using the More key:

SUN

M23511

SCHED

HOLD

CLOCK SCREEN

DONE

WAKE

LEAVE RETURN SLEEP CANCEL

M22450

4. Press the Done key to go back to the viewing screen.

TUE WED THU FRI SAT SUN

MON

CHANGE FILTER UV LAMP HUMIDIFIER PAD

RESET

DAYS

SCHED

HOLD

CLOCK SCREEN MORE

DONE

WAKE

LEAVE RETURN SLEEPEDIT CANCEL

M22449

68-0287—1 30

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

SCHED

HOLD

SCHED

HOLD

SCHED

HOLD

5. Press the Reset key to activate the new number of days

selected in the previous screen.

TUE WED THU FRI SAT SUN

MON

CHANGE FILTER UV LAMP HUMIDIFIER PAD

RESET

DAYS

SCHED

HOLD

CLOCK SCREEN MORE

DONE

WAKE

LEAVE RETURN SLEEPEDIT CANCEL

M22451

6. Press the Done key to return to the Home screen.

Humidifier Pad Reminder

The Humidifier Pad change reminder must be turned on from the Installer Setup. Once expired, the screen flashes, “Change Humidifier Pad” and a Reset key appears. Press the Reset key to reset the change reminder.

The remaining calendar or run time days can be viewed by pressing the More key. The remaining days can be edited using the More key or from the Installer Setup.

TUE WED THU FRI SA SUN

MON

CHANGE FILTER UV LAMP HUMIDIFIER PAD

RESET

DAYS

NOTE: While the reminder is set according to calendar days,

the display shows the equivalent run time days.

TUE WED THU FRI SA SUN

MON

CHANGE FILTER UV LAMP HUMIDIFIER PAD

RESET

DAYS

SCHED

HOLD

CLOCK SCREEN MORE

DONE

WAKE

LEAVE RETURN SLEEPEDIT CANCEL

M23517

The remaining days can be edited using the More key or from the Installer Setup. To view or reset the reminder before it expires, follow these steps using the More key:

1. Press the More key until the UV Lamp change reminder

appears on the screen. This is the number of run time days remaining on the UV Lamp reminder.

2. Press the Edit key.

3. Use the Up and Down keys to change the number of cal-

endar days.

4. Press the Done key to go back to the viewing screen.

5. Press the Reset key to activate the new number of days

selected in the previous screen.

6. Press the Done key to return to the Home Screen.

Temperature Recovery

The thermostat feature, Adaptive Intelligent Recovery™, eliminates all guesswork when setting the thermostat schedule.

Simply set the program schedule to the time that the comfort temperature is desired. The thermostat then turns on the heating or cooling at just the right time to have the home reach the scheduled temperature at the scheduled time.

SCHED

HOLD

CLOCK SCREEN MORE

DONE

WAKE

LEAVE RETURN SLEEPEDIT CANCEL

To view or reset the reminder before it expires, follow these steps using the More key:

Press the More key until the Humidifier Pad change reminder appears on the screen. This is the number of calendar days remaining on the Humidifier Pad reminder.

2. Press the Edit key.

3. Use the Up and Down keys to change the number of cal-

endar or run time days.

4. Press the Done key to go back to the viewing screen.

5. Press the Reset key to activate the new number of days

selected in the previous screen.

6. Press the Done key to return to the Home Screen.

UV Lamp Reminder

The UV Lamp change reminder must be turned on from the Installer Setup. Once expired, the screen flashes, “Change UV Lamp” and a Reset key appears. Press the Reset key to reset the change reminder.

The remaining calendar days can be viewed by pressing the More key.

M23516

For example—get up at 6:00 AM and want the temperature to be 70°F. Set the Wake period for 6:00 AM and 70°F. The thermostat then turns on the heat before 6:00 AM to raise the temperature to 70°F by 6:00 AM.

The thermostat alerts that the heating or cooling system is coming on before a scheduled time by showing “Recovery” on the screen.

TUE

FAN

Inside

AUTO

SYSTEM

COOL

SCHED HOLD CLOCK SCREEN MORE

31 68-0287—1

Set To

Following Schedule

Recovery

Humidity

M23512

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

NOTE: It takes about a week for the thermostat to adjust to

local weather, the schedule, the construction of the home and the heating and/or cooling system. Each day it adjusts the next day’s recovery start time accordingly.

P+I Control

The thermostat microprocessor-based control requires that the user understands temperature control and thermostat performance. 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. This is a phenomenon that most people in the industry know and accept. Many factors contribute to offset including switch differential, thermal lag, overshoot, cycle rates and system load.

The thermostat microprocessor simultaneously gathers, compares and computes data. Using this data, it controls a wide variety of functions. The special proprietary algorithm (program) in the thermostat eliminates the factors causing offset. This makes temperature control more accurate than the conventional mechanical or electronic thermostats. The temperature control algorithm is called proportional plus integral (P+I) control.

The thermostat sensor, located on the thermostat or remote, senses the current space temperature. The proportional error is calculated by comparing the sensed temperature to the programmed setpoint. 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. 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. The addition of the integral error is what differentiates the thermostat from many other electronic and mechanical thermostats. See Fig. 33.

THERMOSTAT COOL SETPOINT

PROPORTIONAL COOL CONTROL POINT

P+I CONTROL POINT

TEMPERATURE

100 50 0 50 100

PROPORTIONAL HEAT CONTROL POINT

THERMOSTAT HEAT SETPOINT

HEATING

PERCENT LOAD

COOLING

M4414

Minimum Off-Timer

The Thermostat has built-in compressor protection (minimumoff 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 “Wait” in the display.

WED

FAN

Inside

AUTO

SYSTEM

HEAT

COOL

SCHED HOLD CLOCK SCREEN MORE

When the minimum-off timer expires, “Cool On” or “Heat On”a appears in the display and the compressor and fan turn on.

_________

Heat Pumps only.

Inside Humidity Level

The humidity level in the home is shown in the lower right corner of the Home Screen.

NOTE: If an outdoor temperature sensor is present, the out-

door temperature will be displayed in this location rather than the indoor humidity. To see indoor humidity, display the humidity settings menu.

TUE

FAN

Inside

AUTO

SYSTEM

COOL

SCHED HOLD CLOCK SCREEN MORE

Set To

Set

Wait

Following Schedule

Humidity

Following

Schedule

Humidity

M23513

M23678

Fig. 33. Proportional temperature control versus P+ I

temperature control.

68-0287—1 32

If thermostat is set to Auto Changeover System mode, press the More key until the humidity level is shown on the screen.

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

SCHED

HOLD

MON

THUSASUN

TUE WED THU FRI SA SUN

MON

Inside

SCHED

HOLD

CLOCK SCREEN

DONE

WAKE

LEAVE RETURN SLEEP CANCEL

M23679

C7089U1006 Outdoor Temperature Sensor

Operation

When installed with Thermostat Installer Setup Number 0342 set to 1, the outside temperature can be displayed on the thermostat. See Fig. 34.

Insi

AUT

SYSTEM

HEAT

SCHED HOLD CLOCK SCREEN MORE

Fig. 34. Outside temperature reading on

VisionPRO

The C7089U1006 Outdoor Sensor converts outdoor ambient temperature to a resistance that the thermostat can interpret.

The C7089U1006 has a negative temperature coefficient (NTC), which means that resistance decreases as the temperature increases. See Table 12.

Checkout

Allow C7089U1006 Outdoor Sensor to absorb outdoor air for a minimum of twenty minutes before taking a reading.

With an accurate thermometer (±1°F [0.5°C]) measure the temperature at the sensor location, allowing time for the thermometer to stabilize before reading.

To verify sensor resistance, remove one wire from one of the C7089U1006 60-in. leadwires. Use an ohmmeter to measure the resistance across the sensor. Then verify the sensor accuracy with the temperature/resistance in Table 12.

Calibration

The C7089U1006 Outdoor Sensor is calibrated at the factory and cannot be recalibrated in the field.

t T

Following

Schedule

Outside

M22453

IAQ Thermostat.

Table 12. Sensor Resistance at

Outdoor Temperature.

Outdoor

Temp erature

Ohms of

Resistance

Outdoor

Temp erature

Ohms of

Resistance°F °C °F °C

-20 -28.9 106926 52 11.1 17136

-18 -27.8 100923 54 12.2 16387

-16 -26.7 95310 56 13.3 15675

-14 -25.6 90058 58 14.4 14999

-12 -24.4 85124 60 15.6 14356

-10 -23.3 80485 62 16.7 13743

-8 -22.2 76137 64 17.8 13161

-6 -21.1 72060 66 18.9 12607

-4 -20.0 68237 68 20.0 12081

-2 -18.9 64631 70 21.1 11578

0 -17.8 61246 72 22.2 11100

2 -16.7 58066 74 23.3 10644

4 -15.6 55077 76 24.4 10210

6 -14.4 53358 78 25.6 9795

8 -13.3 49598 80 26.7 9398

10 -12.2 47092 82 27.8 9020

12 -11.1 44732 84 28.9 8659

14 -10.0 42506 86 30.0 8315

16 -8.9 40394 88 31.1 7986

18 -7.8 38400 90 32.2 7672

20 -6.7 36519 92 33.3 7372

22 -5.6 34743 94 34.4 7086

24 -4.4 33063 96 35.6 6813

26 -3.3 31475 98 36.7 6551

28 -2.2 29975 100 37.8 6301

30 -1.1 28558 102 38.9 6062

32 0.0 27219 104 40.0 5834

34 1.1 25949 106 41.1 5614

36 2.2 24749 108 42.2 5404

38 3.3 23613 110 43.3 5203

40 4.4 22537 112 44.4 5010

42 5.6 21516 114 45.6 4826

44 6.7 20546 116 46.7 4649

46 7.8 19626 118 47.8 4479

48 8.9 18754 120 48.9 4317

50 10.0 17926 —

C7189U1005 Remote Indoor Temperature Sensor

Operation

When installed with Thermostat Installer Setup Number 0340 set to 1, the remote inside temperature is displayed on the thermostat home screen as Inside Temperature. The thermostat internal temperature sensor is not used. When

33 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

installed with Thermostat Installer Setup Number 340 set to 2, the temperature displayed on the thermostat home screen as Inside Temperature will be a 50/50 average between the temperature sensed at the remote sensor location and the temperature sensed at the thermostat location.

The C7189U1005 Wall Mount Temperature Sensor converts room temperature to a resistance that the thermostat can interpret.

The C7189U1005 has a negative temperature coefficient (NTC), which means that resistance decreases as the temperature increases. See Table 13.

The C7189U1005 can be used to provide one remote sensor input (see Fig. 26) or as a temperature averaging network with multiple C7189U1005 Sensors connected, as shown in Fig. 27.

Checkout

For best results, allow C7189U1005 Wall Mount Temperature Sensor to absorb the air moving through the room for a minimum of twenty minutes before taking a resistance measurement.

With an accurate thermometer (±1°F [0.5°C]) measure the temperature at the sensor location, allowing time for the thermometer to stabilize before reading.

To verify sensor resistance, remove one wire from one of C7189U1005 wiring terminals. Use an ohmmeter to measure the resistance across the sensor. Then verify the sensor accuracy with the temperature/resistance in Table 13.

Calibration

The C7189U1005 Wall Mount Temperature Sensor is calibrated at the factory and cannot be recalibrated in the field.

Table 13. Sensor Resistance at Room Temperature.

Room

Temperature

40 4.4 22537 72 22.2 11100

42 5.6 21516 74 23.3 10644

44 6.7 20546 76 24.4 10210

46 7.8 19626 78 25.6 9795

48 8.9 18754 80 26.7 9398

50 10.0 17926 82 27.8 9020

52 11.1 17136 84 28.9 8659

54 12.2 16387 86 30.0 8315

56 13.3 15675 88 31.1 7986

58 14.4 14999 90 32.2 7672

60 15.6 14356 92 33.3 7372

62 16.7 13743 94 34.4 7086

64 17.8 13161 96 35.6 6813

66 18.9 12607 98 36.7 6551

68 20.0 12081 100 37.8 6301

70 21.1 11578 —

Ohms of

Resistance

Room

Temp erature

Ohms of

Resistance°F °C °F °C

COMMUNICATION ERROR CODES

VisionPRO® IAQ can alert the homeowner and installer to problems with the HVAC equipment, thermostat, or equipment interface module by using error codes. Please see Table 14 for a list of error codes. When an error is active (the condition causing the error is still present) it will be displayed in the time field on the thermostat home screen. The home screen can display up to 5 active errors. The time field will flash the time, “Err,” and a list of up to 5 error codes, beginning with the most critical, and repeat until the errors have been remedied.

A log of error codes can be viewed at the end of the installer setup after the system tests. Active errors will be shown first. The Error Log will log the last ten errors (active and inactive). Pressing the reset button will clear all inactive errors from the error log; active errors can not be cleared until the condition has been remedied.

Table 14. VisionPRO® IAQ Error Codes.

Error Code Meaning

027 Faulty thermostat (must be replaced

036 Duplicate UV timer

037 Duplicate filter timer

038 Duplicate humidifier pad timer

039 Duplicate indoor humidity sensor

040 Compressor should be running but it is not

050 Duplicate outdoor temperature sensor

052 Faulty post-coil air discharge sensor

053 Faulty outdoor temperature sensor

054 Faulty indoor humidity sensor

089 Heating/cooling equipment is missing

090 Data interface is continuously busy

091 Thermostat is not receiving data from other

equipment

118 Faulty discharge air temperature sensor

119 Faulty temperature sensor

121 Duplicate post-coil air discharge sensor

68-0287—1 34

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

TROUBLESHOOTING

Table 15. Troubleshooting.

Symptom Possible Cause Action

Display does not come on Thermostat is not being powered Check if the thermostat is mounted and latched on the wall

plate. If not:

— Mount and latch the thermostat on the wallplate. Check if the circuit breaker is tripped or the fuse is blown; if it is:

— Reset the circuit Breaker or replace the fuse. Check if the power switch at the equipment is in the off position; if it is:

— Set to the on position. Check for 24 Vac between terminals 2 and 3 at the thermostat.

— Replace any broken wires if 24Vac is not present.

— Replace thermostat if 24Vas is present. Check for 24 Vac between terminals R and C at the Equipment interface module.

— If 24Vac is not present consult electrician.

— If 24 Vac is Present replace Equipment interface

module.

Temperature setting does not change

Heating or cooling does not come on and thermostat is not calling for heat or cool.

Heating or cooling does not come on and thermostat is calling for heat or cool.

Heat does not turn on (“Heat On” is solid in the display)

The upper and lower temperature limits reached

Keypad is fully locked Check Installer Setup Number 670 to change keypad

Thermostat minimum off timer is activated

System selection is not set to Heat or Cool

Heating or cooling equipment is not operating

Heating Equipment failure Check for 24 Vac at the equipment on the secondary side

Loose or broken wire connection between Equipment Interface Module and heating equipment.

Communication is not being completed

Check temperature setpoints. Check installer setup Numbers 0600 and 610; modify as needed.

locked options.

Wait up to 5 minutes for the system to respond (Wait is displayed on the Thermostat home screen.

Set system selection to correct setting.

Check Wiring. Check installer setup number 172 and verify the correct system type is chosen. Verify operation of equipment in system test mode.

of the transformer between power and common. If voltage is not present check the heating equipment to find the cause of the problem. Check for 24 Vac between the heat terminal(s) on the equipment interface Module and transformer common. If present check heating equipment to find the cause of the problem.

Check for 24 Vac between the heat terminal(s) on the HVAC equipment and system transformer common. If voltage is not present check for loose or broken wires between the EIM and heating equipment.

End the call for heat at the thermostat then repeat the call for heat. Check the communication LED on the EIM board.

— If the LED does not blink, check communication

wiring (wire between terminal 1 on both the EIM and thermostat.

— If the LED does blinks correctly, check for 24 Vac

between heating terminals on the EIM and the sys-

tem common. If 24 Vac is not present check the R to Rh connection on the EIM, if the connection is good replace the EIM.

35 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Table 15. Troubleshooting. (Continued)

Symptom Possible Cause Action

Cooling does not turn on (“Cool

Cooling Equipment failure Check for 24 Vac at the equipment on the secondary side

On” is solid in the display)

Loose or broken wire connection between Equipment Interface Module and cooling equipment.

Communication is not being completed

2nd stage heat or cool does not energize

Stage configuration is not set correctly to match the number of selected stage

Terminals not connected properly at EIM

“Err” appears in time field of home screen on thermostat

Fan does not turn on in a call for heat (electric furnace).

Heat pump puts out cool air in the heat mode and warm air in the cool mode.

Thermostat has detected an error on the communication bus

Fan Control in Heating is set to Gas or Oil Furnace (Setting 0180).

Changeover Valve (Installer Setup Number 0190) is not configured to match the changeover required by the installed heat pump.

Both the heating and cooling equipment are running at the same time.

The heating equipment is not a heat pump but the System Type (Installer Setup Number 0172) is set to Heat Pump.

Heating and cooling wires are shorted together.

Heating equipment is running in the cool mode.

Heating equipment is not a heat pump but System Type (Installer Setup Number 0172) is set to Heat Pump.

Heating equipment does not turn off and heat temperature setting is set below room temperature (Heat On is not in the display).

Cannot set the system setting to Heat.

Heating equipment is not a heat pump but System Type (Installer Setup Number 0172) is set to Heat Pump.

System Type (Installer Setup Number 0172) is set to Cool Only.

of the transformer between power and common. If voltage is not present check the cooling equipment to find the cause of the problem. Check for 24 Vac between the cool terminal(s) on the equipment interface Module and transformer common. If present check cooling equipment to find the cause of the problem.

Check for 24 Vac between the cool terminal(s) on the cooling equipment and system transformer common. If voltage is not present check for loose or broken wires between the EIM and cooling equipment.

End the call for cool at the thermostat then repeat the call for cool. Check the communication LED on the EIM board.

— If the LED does not blink, check communication

wiring (wire between terminal 1 on both the EIM and thermostat.

— If the LED does blinks correctly, check for 24 Vac

between heating terminals on the EIM and the sys-

tem common. If 24 Vac is not present check the R to Rh connection on the EIM, if the connection is good replace the EIM.

Set the stage configuration in installer setup for additional stages of cool (ISU 174) or additional stages of heat (ISU

176).

Check that 24 Vac is present at W2/AUX and W3/AUX2 for 2nd and 3rd stages of conventional heating and for 3rd and 4th stages of heat pump heating. Also check that 24VAC is present at Y2 for 2nd stage of cooling or 2nd stage heat in heat pump applications.

Refer to error code section for more information.

Set Fan Control in Heating to Electric Furnace (Setting

0180).

Set Changeover Valve (Installer Setup Number 0190) to match the changeover required by the installed heat pump.

Set System Type (Installer Setup Number 0172) to match the installed heating and/or cooling equipment.

Separate the shorted heating and cooling wires.

Set System Type (Installer Setup Number 0172) to match the installed heating and/or cooling equipment.

Cannot set the system setting to Cool.

System Type (Installer Setup Number 0172) is set to Heat Only or Heat Only with Fan.

68-0287—1 36

Set System Type (Installer Setup Number 0172) to match the installed heating and/or cooling equipment.

Table 15. Troubleshooting. (Continued)

Symptom Possible Cause Action

Heat On is not in the display. System setting is not set to Heat

and/or temperature setting is not set above room temperature.

Cool On is not in the display. System setting is not set to Cool

and/or the temperature setting is not set below room temperature.

Wait is in the display. Compressor minimum off timer is

active.

“Screen Locked” appears on the screen and all or some of the

The keypad is fully or partially locked.

keys do not respond.

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

Set the system setting to Heat and set the temperature setting above the room temperature.

Set the system setting to Cool and set the temperature setting below the room temperature.

Wait up to five minutes for the cooling or heating (heat pump) equipment to turn on.

Check Installer Setup Number 0670 to change keypad locked options.

37 68-0287—1

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

COMPATIBILITY

Recommend the following products for use with the VisionPRO® IAQ.

Table 16. Humidifiers

HE440A1005—Powered Steam Humidifier with 13 gpd capacity

HE365A1006—Powered Bypass Flow-through humidifier with 18 gpd capacity

HE265A1007—Bypass Flow-through humidifier with 17 gpd capacity

HE225A1006—Bypass Flow-through humidifier with 12 gpd capacity

Table 17. Dehumidifier

DH90A1007—90 Pint Whole House Dehumidifier

Table 18. Ventilation

HR150B1005—heat recovery ventilator 150cfm with built in defrost

HR200B1005—heat recovery ventilator 200cfm with built in defrost

ER150B2006—energy recovery ventilator 150cfm with built in defrost

ER150C2004—energy recovery ventilator 150cfm with no defrost

ER200B2006—heat recovery ventilator 200cfm with built in defrost

ER200C2004—heat recovery ventilator 200cfm with no defrost

EARD5—5” round damper NC Power Open/Spring Close

EARD6—6” round damper NC Power Open/Spring Close

EARD7—7” round damper NC Power Open/Spring Close

EARD8—8” round damper NC Power Open/Spring Close

Following is a list of compatible communicating products.

Table 19. Communicating Products

THM5421C—Equipment Interface Module Universal up to 4H2C systems

T8635L1013*—3H3C communicating Thermostat

W8635A1006—Equipment Interface Module for 2H2C conventional systems

W8635B1004—Equipment Interface Module for 2H2C heat pump systems

W8735A1005—EnviraCOM Serial Port Adapter

W8735B1003—Telephone Access Module

W8735D1009—Telephone Access Module two Channel communicating

W8735D1017—Telephone Access Module four channel communicating

W8835A1004—Envirazone Zone Panel

C7835A1009—Communicating Discharge Air Sensor

W8703A1003—Damper Interface Module

L7224C1004—120VAC Electronic Aquastat

L7248—Aquastat

R7184—Oil Primary

* T8635L thermostats used with TH9421C thermostats must be used with a W8835A Zone Panel and the TH9421C must be the

Master Zone Controller (zone 1 thermostat)

Table 20. UV Lights

UV100E2009

UV100E1043

UV100E3007

68-0287—1 38

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

39 68-0287—1

VISIONPRO

IAQ TOTAL HOME COMFORT SYSTEM

Automation and Control Solutions

Honeywell International Inc. Honeywell Limited-Honeywell Limitée

1985 Douglas Drive North 35 Dynamic Drive

Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9

customer.honeywell.com

® U.S. Registered Trademark © 2006 Honeywell International Inc. US Patent No. 6,208,263; 6,373,376; 6,448,901; 6,926,076; 7,044,397; D509151; H25192; H25193 and other patents pending 68-0287—1 M.S. Rev. 10-06

Honeywell THM5421C1008 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

FEATURES

APPLICATION

SPECIFICATIONS

INSTALLATION

When Installing this Product...

Selecting Location

Installing Wallplate

Installing Equipment Interface Module (EIM)

COMMUNICATION LED

WIRING

POWER THE THERMOSTAT

Wiring 24 Vac Common

Mount Thermostat to Wallplate

Locate and Mount C7089U1006 Outdoor Temperature Sensor (Optional)

Wire C7089U1006 Outdoor Sensor

Wire C7189U1005 Indoor Sensor

Locate and Mount C7189U1005 Remote Indoor Temperature Sensor (Optional)

Install Discharge Air Temperature Sensor (Optional):

Set Calendar and Time

INSTALLER SETUP

Using Auto Discover

INSTALLER SYSTEM TEST

How to Use the Installer System Test

Installer System Tests

OPERATION

Thermostat Keys

Thermostat Display

System and Fan Settings

Control Humidification Level

Control Dehumidification Level

Ventilation Control

HEAT PUMP OPERATION

Heat Pump LED Indication

Heat Pump Emergency Heat LED Indication

Heat Pump Temperature Lockouts

Dual Fuel Heat Pump Control

User Setup

PROGRAMMING

Preprogrammed Energy Star Settings

Program Heating and Cooling Schedule

Edit Schedule

Cancel a Schedule Period

OPERATE VISIONPRO® IAQ

Set Time

Set Temperature Overrides

Clean Thermostat Screen

Screen Locks

Humidification Control

Dehumidification Control

Ventilation Control

Indoor Air Quality Reminders

Temperature Recovery

P+I Control

Minimum Off-Timer

C7089U1006 Outdoor Temperature Sensor

C7189U1005 Remote Indoor Temperature Sensor

COMMUNICATION ERROR CODES

TROUBLESHOOTING

COMPATIBILITY