Honeywell Thm5421C1008 Users Manual 68 0287 1 VisionPRO IAQ Total Home Comfort System

THM5421C1008 68_0287

THM5421C1008 to the manual b1ec5513-3a99-4545-a4d9-6448597ba9cc

: Honeywell Honeywell-Thm5421C1008-Users-Manual-262536 honeywell-thm5421c1008-users-manual-262536 honeywell pdf

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PRODUCT DATA

68-0287-1

VisionPRO® IAQ

Total Home Comfort System

APPLICATION

The VisionPRO® IAQ Total Home Comfort System features an

effortless, 7-Day programmable touchscreen thermostat that

provides control of temperature, humidification,

dehumidification, and ventilation.

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.

• Advanced heat pump control featuring balance point

plus 2°F droop to increase homeowner comfort.

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

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 2

SPECIFICATIONS

Thermostat Description:

Electrical Ratings:

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%.

Cycle Rates (at 50% Load):

Heating: Selectable 1 - 12 cycles per hour.

Cooling: Selectable 1 - 6 cycles per hour.

Finish:

VisionPRO® IAQ Thermostats: Premier White® color.

THM5421C1008: Premier White® color.

C7189U1005 Wall Mount Remote Indoor Sensor: Premier

White® 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 tem-

perature 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 sec-

tion 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 run-

ning 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. junc-

tion 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.

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

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

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

368-0287—1

Fig. 1. VisionPRO® IAQ Comfort System

dimensions in in. (mm).

Fig. 2. THM5421C1008 Equipment Interface Module

dimensions in in. (mm).

Fig. 3. C7089U1006 Outdoor Sensor Mounting Clip

dimensions in in. (mm).

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

M23539

6 (152)

THERMOSTAT

4-9/16

(116)

3-3/8 (86)

WALLPLATE

3-3/8 (86)

THERMOSTAT

AND WALLPLATE

1-3/8 (35)

7-9/32

(185)

1-21/64

(34)

6-57/64

(175)

4-35/64

(116)

M23544

FRONT VIEW SIDE VIEW

M4488

1-1/2 (38)

7-7/8 (200)

3-5/16 (84)

3-5/16

(84)

M22139

5-1/2

(140)

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 4

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 hazard-

ous 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.

Fig. 6. Selecting thermostat location.

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

— Drafts or dead spots behind doors and in corners.

— Hot or cold air from ducts.

— Radiant heat from sun or appliances.

— Concealed pipes and chimneys.

— Unheated (uncooled) areas such as an outside wall behind

the thermostat.

Installing Wallplate

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.

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.

M23522

2-9/32

(58)

1-1/2 (38)

2-9/32

(58)

1-1/2 (38)

45/64

(18)

FRONT VIEW SIDE VIEW FRONT VIEW (COVER OFF)

5 FEET

[1.5 METERS]

YES NO

NO

NO

M19925

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

568-0287—1

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.

Fig. 7. Mounting wallplate.

Installing Equipment Interface Module (EIM)

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.

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

startup, and while checking equipment status (Auto

Discover mode).

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 designa-

tion 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.

WALL

MOUNTING

HOLES

M23543

MOUNTING

SCREWS (2)

WALL ANCHORS (2)

WIRES THROUGH WALL

AND WIRE SLOT

M23541

Table 1. Selecting Terminal Identifications for System Type.

System Type

Wallplate Terminal

Identifications

Wiring Diagram

Reference

Standard Heat/Cool Conventional 10, 11

Standard Multistage

up to 3 Heat/2 Cool

Conventional 12

Heat Pump with

Auxiliary Heat

Heat Pump 13

WALL ANCHOR

MOUNTING SCREW

DRILL 3/16 IN. HOLES

FOR DRYWALL. DRILL

7/32 IN. HOLES FOR

PLASTER

COMMUNICATION LED

M2

3

4

8

4

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 6

Fig. 9. Inserting wires in terminal block.

IMPORTANT

Use 18-gauge thermostat wire.

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 sys-

tem, 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.

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

and cool system with single transformer

(1H/1C conventional).

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

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

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

M23541

M23485

FACTORY INSTALLED

JUMPER BETWEEN R,

RC AND RH

1

2

3

C

R

RC

RH

COMMUNICATION

TERMINALS

COMMUNICATION LED

W1

W2

W3

Y

Y2

G

24 VAC

O/B

AUX

AUX2

Y

Y2

G

1

2

3

WIRE TO TERMINALS ON THERMOSTAT.1

1

CONV. HP

M23486

FACTORY INSTALLED JUMPER BETWEEN R,

AND RC (REMOVE FACTORY INSTALLED

JUMPER BETWEEN RC AND RH

1

2

3

C

R

RC

RH

COMMUNICATION

TERMINALS

COMMUNICATION LED

W1

W2

W3

Y

Y2

G

24 VAC

O/B

AUX

AUX2

Y

Y2

G

1

2

3

OIL PRIMARY/

AQUASTAT

WIRE TO TERMINALS ON THERMOSTAT.1

1

CONV. HP

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

768-0287—1

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).

Fig. 13. Typical hookup of heat pump system

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

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

Fig. 15. Typical hookup of powered humidifier.

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.

Fig. 17. Typical hookup of powered whole house

dehumidifier (contacts normally open).

M23685

KEY

= NORMALLY OPEN, DRY CONTACTS

= NORMALLY CLOSED, DRY CONTACTS

M23487

FACTORY INSTALLED

JUMPER BETWEEN R,

RC AND RH

1

2

3

C

R

RC

RH

COMMUNICATION

TERMINALS

COMMUNICATION LED

W1

W2

W3

Y

Y2

G

24 VAC

O/B

AUX

AUX2

Y

Y2

G

1

2

3

CONV. HP

HEAT 1 RELAY

HEAT 2 RELAY

HEAT 3 RELAY

COOL 1 RELAY

COOL 2 RELAY

FAN RELAY

WIRE TO TERMINALS ON THERMOSTAT.

1

1

M23488

FACTORY INSTALLED

JUMPER BETWEEN R,

RC AND RH

1

2

3

C

R

RC

RH

COMMUNICATION

TERMINALS

COMMUNICATION LED

W1

W2

W3

Y

Y2

G

24 VAC

O/B

AUX

AUX2

Y

Y2

G

1

2

3

CONV. HP

CHANGEOVER

AUX 1 (HEAT 3)

AUX 2 (HEAT 4)

COMP 1

COMP 2

FAN RELAY

WIRE TO TERMINALS ON THERMOSTAT.

1

1

M23489

FIELD INSTALLED

JUMPER BETWEEN

R AND HUM 1

1

2

3

C

R

RC

RH

24 VAC

H1

U

M2

D1

H

M2

V1

N

T2

OR

NON-POWERED

HUMIDIFIER

M23490

1

2

3

C

R

RC

RH

24 VAC

H1

U

M2

D1

H

M2

V1

N

T2

OR

POWERED

HUMIDIFIER

M23491

FIELD INSTALLED

JUMPER BETWEEN

R AND DHM 1

1

2

3

C

R

RC

RH

24 VAC

H1

U

M2

D1

H

M2

V1

N

T2

OR

LOW SPEED

FAN

M23492

1

2

3

C

R

RC

RH

24 VAC

H1

U

M2

D1

H

M2

V1

N

T2

OR

POWERED

DEHUMIDIFIER

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 8

Fig. 18. Typical hookup of fresh air damper.

NOTE: Use this hookup for ventilation using a fresh air

damper.

Fig. 19. Typical hookup of powered ventilation.

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

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.

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.

Fig. 22. Mount thermostat to wallplate.

M23493

FIELD INSTALLED

JUMPER BETWEEN

R AND VNT 1

1

2

3

C

R

RC

RH

24 VAC

H1

U

M2

D1

H

M2

V1

N

T2

OR

NON-POWERED

VENTILATOR

M23494

1

2

3

C

R

RC

RH

24 VAC

H1

U

M2

D1

H

M2

V1

N

T2

OR

POWERED

VENTILATOR

M23495

1

2

3

C

R

RC

RH

24 VAC

H1

U

M2

D1

H

M2

V1

N

T2

OR

FRESH

AIR

DAMPER

DH90

BLUE

GREEN

YELLOW

RED

WHITE

FIELD INSTALLED

JUMPER BETWEEN

DHM 1 AND VNT 1

REMOVE DURING

INSTALLATION

M19920

REMOVE

TAB

REMOVE DURING

INSTALLATION

M23542

PINS ON

BACK OF

THERMOSTAT

WALLPLATE

TERMINAL

SCREW

BLOCK

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

968-0287—1

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.

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.

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 opera-

tion. 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.

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.

M7514

1

2

2

1

USE APPROPRIATE MOUNTING MEANS FOR THE

TYPE OF STRUCTURE.

PLUG WIRING HOLE WITH NON-HARDENING CAULK

OR PUTTY.

C7089

WIRING HOLE

THROUGH

STRUCTURE

M23525

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 10

If thermostat is set to Auto Changeover System mode, press

the More key until the outside temperature is shown on the

screen.

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 loca-

tions 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

location.

c. Dead air areas:

(a)Behind doors, furniture and curtains.

(b)In corners and alcoves.

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.

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.

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.

SCHED HOLD CLOCK SCREEN MORE

MON

T

UE

WED

THU

FRI

SA

T

A

A

T

SUN

AM

FAN

A

U

T

O

SYSTEM

HEAT

Following

Schedule

In

s

i

de

Outside

Se

t T

o

M22453

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN

DONE WAKE LEAVE RETURN SLEEP CANCEL

MON TUE WED THU FRI SAT SUN

Outside

M22448

5 FEET

(1.5 METERS)

YES

NO

NO

NO

M4476

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

11 68-0287—1

Fig. 26. Wiring a single C7189U1005 Indoor Sensor.

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:

• 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:

• 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.

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.

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

4. Press the Done Key.

C7189

1 OUT

L

2 IN

1 IN

M23523

2 OUT

M23524

C7189 C7189

C7189 C7189

C7189 C7189

C7189 C7189

C7189

C7189

C7189 C7189 C7189

1 OUT

L

2 IN

1 IN

2 OUT

1 OUT

L

2 IN

1 IN

2 OUT

DONE

MO

MO

WE

WE

TH

TH

FR

FR

S

S

A

A

SU

CHANGE FILTER UV LAMP

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

SET CURRENT DAY

SET MONTH

USE ARROWS TO SET YEAR AND TIME

M22424

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 12

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.

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:

1. Press and release the System Key.

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

center blank key for approximately five seconds until

screen changes.

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

mostat matches the screen below.

D

O

N

E

MO

WE

TH

FR

SA

SU

USE ARROWS TO SET YEAR AND TIME

M22425

W

SCHED HOLD CLOCK SCREEN

FAN

ON

AUTO

A

M

THU

SYSTEM

EM HEAT

OFF

COOL

Following

Schedule

Inside

M23498

Humidity

DONE CANCEL

MO

MO

TU WE

WE

TH

TH

FR

FR

S

S

A

A

SU

SYSTE

M

EM

HEAT

OFF

CHANGE FILTER UV LAMP

Following

Schedule

Inside Set

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

M23499

Humidity

D

O

NE

M22442

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

13 68-0287—1

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

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

Installer Setup Numbers and Settings.

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

DONE

O

MON

WED

THU

FRI

SA

T

A

A

T

SUN

INSTALLER

SETUP

NUMBER

CURRENT

SETTING

ADVANCE TO NEXT

INSTALLER SETUP

PRESS TO EXIT

INSTALLER SETUP

CHANGE THE

CURRENT

SETTING M22443

A

U

Table 3. Installer Setup Menu.

ISU

Parameter

Number

Installer Setup

Name

Settings

(Factory Defaults Shown in Bold) Notes

110 Zone Number 0

1–9

Not zoned

Zone number

Select zone number.

Zone 0 = not zoned

Zone 1 = master zone controller

Zone 2–9 = satellite thermostat

120

USU

Date (Year

Upper)

20

21

Select first two digits of current calendar year (2006 for

example) - (2001-2178 available).

130

USU

Date (Year

Lower)

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

example) - (2001-2178 available).

140

USU

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

month.

Default = 06

150

USU

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

date.

Default = 15

160

USU

Schedule Options 4

0

Seven-day programmable

Non-programmable

165

USU

Restore Energy

Star Schedule

0

1

No

Yes

172 System Selection 1

2

3

E

Conventional

Heat Pump

Heat Only No Fan

Auto Discover

Selection of a specific system setting will automatically

modify some default settings and/or hide other installer

setup options that follow.

174 Number of Cool/

Compressor

Stages

0

1

2

E

none

1

2

Auto Discover

Not shown if ISU172 = 3.

Conventional systems = number of cooling stages.

Heat Pump systems = number of compressor stages.

176 Number of

Conventional

Heat or Heat

Pump Aux Stages

0

1

2

3

E

none

1

2

3

Auto Discover

Conventional systems = number of heating stages

(maximum of 3).

Heat Pump systems = number of auxiliary heat

stages (maximum of 2).

180 Fan Operation

Conventional

heat only

0

1

2

E

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

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.

190 Reversing Valve

O/B

0

1

Changeover valve—O/B terminal is energized

in cooling

Changeover valve—O/B terminal is energized in

heating

Only shown if ISU172 = 2.

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 14

200 Back-up Heat

Source Applies to

both Aux and

EmHeat

0

1

E

Electric backup heat

Fossil fuel backup heat

Auto Discover

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

210 External Fossil

Fuel Kit

0

1

Thermostat controls backup heat

External Fossil Fuel kit controls backup heat

Only shown if ISU172 = 2 and ISU200 = 1.

220 CPH for 1st

Stage Cool/

Compressor

1-6

E

3—cph recommended for compressors

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

Auto Discover

230 CPH for 2nd

Stage Cool/

Compressor

1-6

E

3—cph recommended for compressors

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

Auto Discover

Only shown if ISU174 = 2.

240 CPH for 1st

Stage

Conventional

Heat or Auxiliary

1-12

E

1—1 cph used for steam and gravity

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

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

Default varies based on types of heating.

250 CPH for 2nd

Stage

Conventional

Heat or 2nd

Stage Auxiliary

1-12

E

1—1 cph used for steam and gravity

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

Only shown if ISU176 = 2 or for Heat Pump systems

with 2 stages of Auxiliary Heat.

Default varies based on types of heating.

260 CPH for 3rd

Stage Heat

1-12

E

1—1 cph used for steam and gravity

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

Only shown if ISU176 = 3.

Default varies based on types of heating.

280

USU

Continuous

Backlight

0

1

Backlight not on continuously. Thermostat

backlight comes on with each key press.

Backlight is on continuously.

If backlight is on continuously, it is low-intensity. Light

changes to full brightness after pressing any key.

300 Changeover 0

1

Manual

Auto

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.

310 Deadband 21.5

32.0

42.5

53.0

63.5

74.0

84.5

95.0

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

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.

320

USU

Temperature

Indication Scale

0

1

Fahrenheit temperature display

Celsius temperature display

330

USU

Daylight Saving 0

1

2

Disabled

Enabled (US 1987)

Enabled (US 2007)

Set to 0 in areas that do not follow daylight savings

time.

340 Indoor Temp

Sensor

0

1

2

Thermostat location only

Remote indoor sensor(s) location(s) only

Average between thermostat and sensor locations

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).

342 Outdoor Temp

Sensor

0

1

E

None

Yes

Auto Discover

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).

Table 3. Installer Setup Menu. (Continued)

ISU

Parameter

Number

Installer Setup

Name

Settings

(Factory Defaults Shown in Bold) Notes

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

15 68-0287—1

345 Dual Fuel Heat

Pump Control

0

1

2

Balance point only

Balance point plus 2° droop

Balance point/auxiliary heat lockout plus 2° droop.

See Dual Fuel Heat Pump control on page 22.

346 Dual Fuel Heat

Pump Upstage to

Furnace Timer

0

30

45

60

75

Disabled

30 minutes

45 minutes

60 minutes

75 minutes

See Dual Fuel Heat Pump control on page 22.

350 Heat Pump

Balance Point

(also compressor

lockout)

Temperature

0

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

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)

Only shown for heat pump applications with an

outdoor temperature sensor present.

360 Heat Pump

Auxiliary Heat

Lockout

Temperature

0

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

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)

Only shown for heat pump applications with an

outdoor temperature sensor present.

365 Discharge Temp

Sensor

0

1

E

None

Remote

Auto Discover

366 Zoning High

Temperature

Limit

160

0

110–170

160°F (71°C)

Disabled

110°F to 170°F (43.5°C to 76.5°C)

Only Shown if ISU110 = 1 (Master Zone Controller)

and Discharge Temperature Sensor is available.

367 Zoning Low

Temperature

Limit

40

0

35-50

160°F (71°C)

Disabled

35°F to 50°F (1.5°C to 10°C)

Only Shown if ISU110 = 1 (Master Zone Controller)

and Discharge Temperature Sensor is available.

368 Staging

Discharge

Temperature

High Limit

110

0

80-130

110°F (43.5°C)

Disabled

80°F to 130°F (26.5°C to 54.5°C)

Only Shown if ISU110 = 1 (Master Zone Controller)

and ISU174 = 2 or more. Must have Discharge

Temperature Sensor present.

369 Staging

Discharge

Temperature

Low Limit

55

0

50-60

55°F (13°C)

Disabled

50°F to 60°F (10°C to 15.5°C)

Only Shown if ISU110 = 1 (Master Zone Controller)

and ISU176 = 2. Must have Discharge Temperature

Sensor present.

370 Indoor Humidity

Sensor

0

1

2

E

Disabled

Internal—sensor in thermostat

Remote

Auto Discovered

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.

372 Indoor

Humidification

Control

0

1

3

E

Off

Humidify with no Frost Protection

Humidify with Frost Protection

Auto Discover

Shown only if ISU370 = 1, 2 or E.

Table 3. Installer Setup Menu. (Continued)

ISU

Parameter

Number

Installer Setup

Name

Settings

(Factory Defaults Shown in Bold) Notes

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 16

374 Hum Fan Action 0

1

2

3

Humidify only while fan or heat is on

Humidify will force fan on

Humidify only when heat is on

Humidifier operates independent of fan

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.

379 Dehumidification

Control

0

1

3

None

Dehumidify with Air Conditioning

Whole house Dehumidifier

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.

383 Over-Cooling

Limit 10.5

21.0

31.5

1°F 0.5°C

2°F 1.0°C

3°F 1.5°C

(Show 1/2 degree C)

Only shown if ISU379 = 1.

384 Dehumidification

Fan Action

0

1

System fan turns on with dehumidifier

Dehumidifier operates independent of system fan

Only shown if ISU379 = 3.

390 Southern

Dehumidification

Away Mode

0

1

No

Yes

Not shown if ISU379 = 0.

ISU 391-394 will only be shown if ISU390 = 1.

391 Southern

Dehumidification

Away Mode Fan

Setting

0

1

2

Fan Auto

Fan On

Fan Circulate

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.

392 Southern

Dehumidification

Away Mode Low

Limit

Temperature

Setting

70-80 70°F–80°F

Default = 76°F

The air conditioner will be allowed to cool the living

space to this temperature to meet the humidity setting

that set in ISU394.

393 Southern

Dehumidification

Away

Temperature

Setting

70-99 70°F–99°F

Default = 85°F

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.

394 Southern

Dehumidification

Away

Dehumidification

Setting

55-70 55%–70% relative humidity

Default = 65%

Set the desired humidity level to maintain within the

living space

400 Ventilation control 0

1

2

No ventilation

Ventilation on at all times

Ventilation on except during sleep period

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

401 Number of

bedrooms

1-6 1–6 bedrooms

Default = 2

402 Total house

Sq. Ft.

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

Default = 1000 sq. ft.

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

Default = 160 CFM

404 Max ventilation

percentage limit

30-60

100

30%–60%

Default = 50%

unlimited

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.

405 Ventilation Fan

Action

1

2

Vent on will force fan on also

Vent will not force fan ON

406 Ventilation in

High Humidity

0

1

Off

On

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.

Table 3. Installer Setup Menu. (Continued)

ISU

Parameter

Number

Installer Setup

Name

Settings

(Factory Defaults Shown in Bold) Notes

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

17 68-0287—1

500

USU

Furnace Filter

Change

Reminder

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

E

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

502 Furnace filter

reminder run time

equipment counts

0

1

Counts runtime Heat and Cool

Counts runtime Cool only

510

USU

Humidifier Pad

Replacement

Reminder

0

1

2

3

E

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

Display will show Calendar Days if ISU372 = 0; Run

Time Days if ISU372 = 1 or 3.

520

USU

UV Lamp

Replacement

Reminder

0

1

2

E

Disabled

365 Days

730 Days (2 years)

Auto Discover

530

USU

Adaptive

Intelligent

Recovery

0

1

Conventional

Adaptive

See Temperature Recovery on page 31.

540

USU

Number of

Periods

2

4

2 Periods

4 Periods

2 periods = Wake and Sleep.

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

580 Min Compressor

Off Time

0

1

2

3

4

5

Off

1 minute

2 minutes

3 minutes

4 minutes

5 minutes

600 Heat Temp

Range Stops

40-90 40°F–90°F (Show 1/2 degree C)

Default = 90°F

610 Cool Temp

Range Stops

60-99 60°F–99°F (Show 1/2 degree C)

Default = 60°F

640

USU

Clock Format 12

24

12 Hour

24 Hour

650 Extended Fan on

time Heat (Blower

Off Delay Heat)

0

30

60

90

120

Off

30 seconds

60 seconds

90 seconds

120 seconds

660 Extended Fan on

time Cool (Blower

Off Delay Heat)

0

30

60

90

120

Off

30 seconds

60 seconds

90 Seconds

120 Seconds

This can be used to remove condensation from A-coil;

however, could re-introduce humidity into the living

space.

670

USU

Keypad Lockout 0

1

2

Unlocked

Partial Locked

Full Locked

680 Temp Control

Heat

1

2

3

Less Aggressive temp control (may cause temp

undershoot)

Standard (recommended)

More Aggressive temp control (may cause temp

overshoot)

690 Temp Control

Cool

1

2

3

Less Aggressive temp control (may cause temp

undershoot)

Standard (recommended)

More Aggressive temp control (may cause temp

overshoot)

Table 3. Installer Setup Menu. (Continued)

ISU

Parameter

Number

Installer Setup

Name

Settings

(Factory Defaults Shown in Bold) Notes

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 18

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 dis-

charge temperature, and press Cancel to return to the

Installer test screen.

Fig. 28. Review thermostat buttons used during Installer

System Test.

700 Temperature

Display Offset

-3

-2

-1

0

1

2

3

-3°F -1.5°C

-2°F -1°C

-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

701 Humidity Display

Offset

-5

-4

-3

-2

-1

0

1

2

3

4

5

-5%

-4%

-3%

-2%

-1%

0%

1%

2%

3%

4%

5%

710 Restore Factory

Defaults

0

1

No

Yes

Restoring factory defaults will re-set installer setup and

programming.

Table 3. Installer Setup Menu. (Continued)

ISU

Parameter

Number

Installer Setup

Name

Settings

(Factory Defaults Shown in Bold) Notes

DO

N

E

M22428

SYSTEM TEST

NUMBER

SYSTEM STATUS

NUMBER

DONE KEY

EXITS INSTALLER

SYSTEM TEST

UP ARROW KEY

ADVANCES TO

NEXT SYSTEM

TEST NUMBER

UP ARROW

TURNS THE

SYSTEM ON

DOWN ARROW

TURNS THE

SYSTEM OFF

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

19 68-0287—1

Installer System Tests

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

Thermostat Display

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

Off

Cool Stage 1

Cool Stages 1 & 2

Test 2 Installer Test Fan 0

1

Off

Fan On

Test 3 Installer Test Heat 0

1

2

3

4

Off

Heat Stage 1

Heat Stages 1, 2

Heat Stages 1,2,3

Heat Stages 1,2,3,4

Test 4 Emergency Heat Test 0

1

2

Off

AUX Heat Stage 1

AUX Heat Stages 1 and 2

Test 5 Installer Test Humidifier 0

1

Off

Humidifier On

Test 6 Installer Test Dehumidifier 0

1

Off

Dehumidifier On

Test 7 Installer Test Ventilator 0

1

Off

Ventilator On

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.

SCHED HOLD CLOCK SCREEN MORE

TUE

AM

FAN

AUTO

SYSTEM

HEAT

COOL

Following

Schedule

Inside Set To

M23500

FAN

SELECTS

ON/AUTO/CIRC

SYSTEM

SELECTS EM.

HEAT/HEAT/OFF/COOL

UP ARROW

RAISES

TEMPERATURE

SETTING

DOWN ARROW

LOWERS TEMPERATURE

SETTING

SCHED

ENTERS

SCHEDULING

MODE

MORE

SHOWS ADDITIONAL

ACCESSORY AND

MAINTENANCE

OPTIONS

SCREEN

LOCKS OUT THE

SCREEN TO ALLOW

FOR CLEANING

CLOCK

SETS THE

TIME

FORWARD

OR BACK

HOLD

SETS A PERMANENT

HOLD AND ACTIVITIES

VACATION HOLD

Humidity

SCHED HOLD CLOCK SCREEN MORE

TU

A

M

FAN

AUTO

SYSTEM

EM HEAT

HEAT

OFF

COOL

Following

Schedule

Inside Set To

M23501

FAN

SHOWS FAN

SETTING

TUE

SHOWS CURRENT DAY

OF THE WEEK

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

FOLLOWING

SCHEDULE

SHOWS THE

THERMOSTAT IS

FOLLOWING THE

PROGRAMMED

SCHEDULE

Humidity

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 20

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.

WITHOUT FROST PROTECTION

The frost setpoint is not displayed, but a humidity setpoint can

still be set.

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.

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.

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.

MORE

DONE

Inside

Humidity

M23518

HUMIDIFIER

CANCEL

MORE

DONE CANCEL

DEHUMIDIFIER

Inside

Humidity

M23496

CURRENT

INDOOR

HUMIDITY

DEHUMIDIFIER

SETTING

(AUTO/OFF)

HUMIDITY SET

POINT

DONE CANCEL

DEHUMIDIFIER

Inside

M23514

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

21 68-0287—1

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).

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.

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 20-

minute increments. The vent timer is enabled whether

ventilation is set to “Auto” or “Off.”

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.

MORE

DONE CANCEL

DEHUMIDIFIER

Inside

Humidity

M23515

DONE

M23520

MORE

DONE CANCEL

VENT

Minutes

M23519

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 22

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.

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.

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.

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.

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.

30

M22441

BALANCE

POINT

COMPRESSOR ONLY

FOSSIL FUEL ONLY

OUTDOOR TEMPERATURE

50

35

OUTDOOR TEMPERATURE

BALANCE

POINT

AUX.

LOCKOUT

COMPRESSOR ONLY

COMPRESSOR+2 °F

DROOP UPSTAGE TO

FURNACE

FURNACE ONLY

M23497

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

23 68-0287—1

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.

Operation in Emergency Heat Mode

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.

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

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

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

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

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

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

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

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

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

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

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

35

M19950

COMPRESSOR

LOCKOUT

TEMPERATURE

AUXILIARY

LOCKOUT

TEMPERATURE

COMPRESSOR ONLY

BOTH COMPRESSOR AND

AUXILIARY HEAT

AUXILIARY ONLY

50

OUTDOOR TEMPERATURE

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 Y, Y 2 b, G Cool On

Heat or Auto Auto None None None

Heat or Auto Auto Stage 1 heating W1, GaHeat On

Heat or Auto Auto Stage 1 and Stage 2 heating W1, W2c, GeHeat On

Heat or Auto Auto Stage 1, Stage 2 and Stage 3 heating W1, W2c, W3d, GeHeat On

Table 6. Sequence of Operation for Heat Pump Systems.

System Setting Fan Setting Call for Action Energize Terminals Screen message

Off Auto none O/BaNone

Cool or Auto Auto none O/BaNone

Cool or Auto Auto Stage 1 cooling Y, G, O/BaCool On

Cool or Auto Auto Stage 1 and Stage 2 cooling Y, Y 2 c, G, O/BaCool On

Heat or Auto Auto none O/BaNone

Heat or Auto Auto Stage 1 heating Y, G, O/BaHeat On

Heat or Auto Auto Stage 1 and Stage 2 heating Y, Y 2 c, G, O/BaHeat On

Heat or Auto Auto Stage 1, Stage 2 and Stage 3 heating Yf, Y2c,f, AUXd, G, O/BaAux Heat On

Heat or Auto Auto Stage 1, Stage 2, Stage 3 and Stage 4 heating Yf, Y2c,f, AUXd, AUX2e, G, O/BaAux Heat On

Em.HeatbAuto None O/BaNone

Em.HeatbAuto Stage 1 Heating AUXd, G, O/BaAux Heat On

Em.HeatbAuto Stage 1 and Stage 2 heating AUXd, AUX2e, G, O/BaAux Heat On

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 24

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

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

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

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

eOnly 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.

2. Press and hold the center blank key for approximately

five seconds until the screen changes.

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

thermostat matches the screen below.

Table 7. Indoor Air Quality Operation.

System Setting Call For Action

Last call Energize

terminalsHeat Cool

Auto Humidification HUM1 and HUM2 CloseaNothingaNone

Auto Dehumidification NothingbDHM1 and DHM2 closeeNone

Auto Dehumidification NothingbDHM1 and DHM2 opencYc and Gc

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 ClosedNA None

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

Cool Humidification NA NothingaNone

Cool Dehumidification NA DHM1 and DHM2 closeeNone

Cool Dehumidification NA DHM1 and DHM2 opencYc and Gc

Cool Ventilation NA VNT1 and VNT2 Close None

SCHED HOLD CLOCK SCREEN

FAN

ON

AUTO

A

M

THU

SYSTEM

EM HEAT

OFF

COOL

Following

Schedule

Inside

M23502

Humidity

DONE CANCEL

TUE

SYSTEM

EM HEAT

OFF

COOL

CHANGE FILTER UV LAMP HUMIDIFIER PAD

Following

Schedule

Inside Set To

M23503

Humidity

D

O

NE

M22440

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

25 68-0287—1

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.

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

PROGRAMMING

Preprogrammed Energy Star Settings

Table 9 shows default program settings. Visit the Energy Star

web site at www.energystar.gov for additional education and

resources on programmable touchscreen thermostats.

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

Table 8. User Setup Menu.

User

Setup

No.

User Setup

Name Settings

120 Date (Year

Upper)

20

21

130 Date (Year

Lower)

01-99 Default = 06

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

calendar month.

Default = 06

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

calendar date.

Default = 15

160 Schedule

Options

4

0

Seven-day programmable

Non-programmable

165 Restore Energy

Star Schedule

0

1

No

Yes

280 Continuous

Backlight

0

1

Backlight not on continuously.

Thermostat backlight comes on with

each key press.

Backlight is on continuously.

320 Temperature

Indication

Scale

0

1

Fahrenheit temperature display

Celsius temperature display

330 Daylight Saving 0

1

2

Disabled

Enabled (US 1987)

Enabled (US 2007)

400 Ventilation

control

0

1

2

No ventilation

Ventilation on at all times

Ventilation on except during sleep

period

DONE

O

MON

WED

THU

FRI

SA

T

A

A

T

SUN

USER SETUP

NUMBER CURRENT

SETTING

ADVANCE TO NEXT

USER SETUP

PRESS TO EXIT

USER SETUP

CHANGE THE

CURRENT

SETTING M19922

A

U

500 Furnace Filter

Change

Reminder

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

E

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

510 Humidifier Pad

Replacement

Reminder

0

1

2

3

E

Disabled

90 C Days

180 C Days

365 C Days

Auto Discover

520 UV Lamp

Replacement

Reminder

0

1

2

E

Disabled

365 Days

730 Days (2 years)

Auto Discover

530 Adaptive

Intelligent

Recovery

0

1

Conventional

Adaptive

540 Number of

Periods

2

4

2 Periods

4 Periods

640 Clock Format 12

24

12 Hour

24 Hour

670 Keypad

Lockout

0

1

2

Unlocked

Partial Locked

Full Locked

Table 9. Energy Star Default Program Settings.

Schedule

Period Time

Setpoints Fan

SettingHeat Cool

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

Table 8. User Setup Menu. (Continued)

User

Setup

No.

User Setup

Name Settings

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 26

back to a comfortable temperature.

Sleep—Period when you are asleep and want an energy-

saving temperature.

NOTE: Schedule times are in 15-minute intervals.

Edit Schedule

1. Press Sched key.

2. Press Edit key.

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.

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 sec-

tion 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.

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.

SCHED HOLD CLOCK SCREEN

FRI

AM

PM

FAN

AUTO

SYSTEM

HEAT

Following

Schedule

Inside Set

M23504

Humidity

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN

DONE WAKE LEAVE RETURN SLEEP CANCEL

MON TUE WED THU FRI SAT SUN

AM

PM

PM

FAN

AUTO

SYSTEM

EM HEAT

HEAT

OFF

COOL

AUTO

CANCEL

PERIOD

HEAT

COOL

Following

Schedule

Inside Set To

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

M22553

EDIT

DONE WAKE LEAVE RETURN SLEEP CANCEL

MON TUE WED THU FRI SAT SUN

AM

FAN

ON

AUTO

CIRC

CANCEL

PERIOD

HEAT

COOL

OK TO PICK MULTIPLE DAYS

M19955

MON TUE WED THU FRI

SAVING

CHANGES

M19956

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

27 68-0287—1

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.

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).

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.

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.

aAuto Override resumes the Fan Program in each schedule

period (Wake, Leave, Return and Sleep)

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN

DONE WAKE LEAVE RETURN SLEEP CANCEL

MON TUE WED THU FRI SAT SUN

AM

PM

PM

FAN

AUTO

SYSTEM

EM HEAT

HEAT

OFF

COOL

AUTO

CANCEL

PERIOD

HEAT

COOL

Following

Schedule

Inside Set To

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

M22446

DONE WAKE LEAVE RETURN SLEEP CANCEL

MON TUE WED THU FRI SAT SUN

FAN

HEAT

COOL

OK TO PICK MULTIPLE DAYS

M19957

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN

DONE WAKE LEAVE RETURN SLEEP CANCEL

MON TUE WED THU FRI SAT SUN

AM

PM

PM

FAN

AUTO

SYSTEM

EM HEAT

HEAT

OFF

COOL

AUTO

CANCEL

PERIOD

HEAT

COOL

Following

Schedule

Inside Set To

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

M22447

Table 10. Fan Program Operation and Screen Status.

Fan

Setting

Fan

Program

Schedule

Call

for

Action

Energize

Terminal

Fan

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

Table 11. Manual Override of Fan Schedule Operation.

Fan

Setting

Fan

Schedule

Override

Setting

Call

for

Action

Energize

Terminal

Screen

Message

Under

Fan

Setting

Auto On Fan G On

Auto Circ None None Circ

Auto Circ Fan G Circ

On Autoa —— —

On Circ None None Circ

On Circ Fan G Circ

Circ Autoa —— —

Circ On Fan G On

SCHED HOLD CLOCK SCREEN

THU

AM

FAN

ON

AUTO

SYSTEM

HEAT

COOL

Following

Schedule

Inside Set

M23505

Humidity

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 28

OPERATE VISIONPRO® IAQ

Set Time

1. Press Clock.

2. Use arrows to set current time.

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.”

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 Tempera-

ture Until on the screen allows the Days Up and Down

arrows to reappear.

DONE CANCEL

TUE

AM

M19958

SCHED HOLD CLOCK SCREEN

CANCEL

TUE

PM

FAN

AUTO

SYSTEM

COOL

Inside

Hold Temperature

Until

Set

M23506

Humidity

SCHED HOLD CLOCK SCREEN

CANCEL

TUE

AM

FAN

AUTO

SYSTEM

COOL

Inside Set To

Permanent

Hold

M23507

Humidity

SCHED CLOCK SCREEN

CANCEL

THU

FAN

AUTO

SYSTEM

HEAT

OFF

COOL

Inside

DAYS

Hold Temperature

Until

Set To

M23508

Humidity

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

29 68-0287—1

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.

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.

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 thermo-

stat itself. If using household glass cleaner, spray

cleaner on cloth. Then use a cloth to clean the ther-

mostat screen.

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

normal operation.

Screen Locks

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.”

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.

MORE

CANCEL

FRI

AM

FAN

AUTO

SYSTEM

HEAT

COOL

DEHUMIDIFIER

Inside Set To

Permanent

Hold

M23521

OK TO

CLEAN

SCREEN

M19964

SCHED HOLD CLOCK SCREEN MORE

TUE

FAN

AUTO

SYSTEM

COOL

Following

Schedule

Inside Set

SCREEN LOCKED

M23509

Humidity

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 30

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

0.

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.

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:

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

the screen. This is the number of fan run-time or calen-

dar days remaining on the filter reminder.

2. Press the Edit key.

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

time or calendar days.

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

SCHED HOLD CLOCK SCREEN MORE

MON

MON

TUE WED

WED

THU

THU

FRI

FRI

S

S

A

A

SUN

PM

FAN

AUTO

SYSTEM

HEAT

HEAT

COOL

RESET

CHANGE FILTER UV LAMP HUMIDIFIER PAD

Following

Schedule

Inside Set To

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

M23511

Humidity

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN MORE

DONE WAKE LEAVE RETURN SLEEPEDIT CANCEL

MON TUE WED THU FRI SAT SUN

RESET

CHANGE FILTER UV LAMP HUMIDIFIER PAD

DAYS

M22449

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN

DONE WAKE LEAVE RETURN SLEEP CANCEL

MON TUE WED THU FRI SAT SUN

CHANGE FILTER UV LAMP HUMIDIFIER PAD

DAYS

M22450

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN MORE

DONE WAKE LEAVE RETURN SLEEPEDIT CANCEL

MON TUE WED THU FRI SAT SUN

RESET

CHANGE FILTER UV LAMP HUMIDIFIER PAD

DAYS

M22449

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

31 68-0287—1

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.

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.

To view or reset the reminder before it expires, follow these

steps using the More key:

1.

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.

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

the display shows the equivalent run time days.

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.

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.

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN MORE

DONE WAKE LEAVE RETURN SLEEPEDIT CANCEL

MON TUE WED THU FRI SAT SUN

RESET

CHANGE FILTER UV LAMP HUMIDIFIER PAD

DAYS

M22451

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN MORE

DONE WAKE LEAVE RETURN SLEEPEDIT CANCEL

MON TUE WED THU FRI SA SUN

CHANGE FILTER UV LAMP HUMIDIFIER PAD

DAYS

M23516

RESET

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN MORE

DONE WAKE LEAVE RETURN SLEEPEDIT CANCEL

MON TUE WED THU FRI SA SUN

CHANGE FILTER UV LAMP HUMIDIFIER PAD

DAYS

M23517

RESET

SCHED HOLD CLOCK SCREEN MORE

TUE

PM

FAN

AUTO

SYSTEM

COOL

Following

Schedule

Inside Set To

Recovery

M23512

Humidity

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 32

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.

Fig. 33. Proportional temperature control versus P+ I

temperature control.

Minimum Off-Timer

The Thermostat has built-in compressor protection (minimum-

off timer) that prevents the compressor from restarting too

early after a shutdown. The minimum-off timer is activated after

the compressor turns off.

If there is a call during the minimum-off timer, the thermostat

shows “Wait” in the display.

When the minimum-off timer expires, “Cool On” or “Heat On”a

appears in the display and the compressor and fan turn on.

_________

aHeat 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 humid-

ity, display the humidity settings menu.

If thermostat is set to Auto Changeover System mode, press

the More key until the humidity level is shown on the screen.

HEATING COOLING

PERCENT LOAD

TEMPERATURE

THERMOSTAT

HEAT SETPOINT

P+I CONTROL

POINT

PROPORTIONAL COOL

CONTROL POINT

THERMOSTAT

COOL SETPOINT

P+I CONTROL POINT

PROPORTIONAL HEAT

CONTROL POINT

M4414

100 50 0 50 100

M23513

Wait

SCHED HOLD CLOCK SCREEN MORE

WED

AM

PM

FAN

AUTO

SYSTEM

HEAT

COOL

Following

Schedule

Inside Set To

Humidity

SCHED HOLD CLOCK SCREEN MORE

TUE

PM

FAN

AUTO

SYSTEM

COOL

Following

Schedule

Inside Set

Humidity

M23678

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

33 68-0287—1

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.

Fig. 34. Outside temperature reading on

VisionPRO® IAQ Thermostat.

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.

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

SCHED

SCHED

HOLD

HOLD

CLOCK SCREEN

DONE WAKE LEAVE RETURN SLEEP CANCEL

MON TUE WED THU FRI SA SUN

Inside

M23679

SCHED HOLD CLOCK SCREEN MORE

MON

T

UE

WED

THU

FRI

SA

T

A

A

T

SUN

AM

FAN

A

U

T

O

SYSTEM

HEAT

Following

Schedule

In

s

i

de

Outside

Se

t T

o

M22453

Table 12. Sensor Resistance at

Outdoor Temperature.

Outdoor

Temperature Ohms of

Resistance

Outdoor

Temperature 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 —

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 34

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.

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 13. Sensor Resistance at Room Temperature.

Room

Temperature Ohms of

Resistance

Room

Temperature Ohms of

Resistance°F °C °F °C

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 —

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

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

35 68-0287—1

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

The upper and lower temperature

limits reached

Check temperature setpoints.

Check installer setup Numbers 0600 and 610; modify as

needed.

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

locked options.

Heating or cooling does not

come on and thermostat is not

calling for heat or cool.

Thermostat minimum off timer is

activated

Wait up to 5 minutes for the system to respond (Wait is

displayed on the Thermostat home screen.

System selection is not set to Heat

or Cool

Set system selection to correct setting.

Heating or cooling does not

come on and thermostat is

calling for heat or cool.

Heating or cooling equipment is not

operating

Check Wiring.

Check installer setup number 172 and verify the correct

system type is chosen.

Verify operation of equipment in system test mode.

Heat does not turn on (“Heat On”

is solid in the display)

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

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.

Loose or broken wire connection

between Equipment Interface

Module and heating equipment.

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.

Communication is not being

completed

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.

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 36

Cooling does not turn on (“Cool

On” is solid in the display)

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

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.

Loose or broken wire connection

between Equipment Interface

Module and cooling equipment.

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.

Communication is not being

completed

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.

2nd stage heat or cool does not

energize

Stage configuration is not set

correctly to match the number of

selected stage

Set the stage configuration in installer setup for additional

stages of cool (ISU 174) or additional stages of heat (ISU

176).

Terminals not connected properly at

EIM

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.

“Err” appears in time field of

home screen on thermostat

Thermostat has detected an error

on the communication bus

Refer to error code section for more information.

Fan does not turn on in a call for

heat (electric furnace).

Fan Control in Heating is set to Gas

or Oil Furnace (Setting 0180).

Set Fan Control in Heating to Electric Furnace (Setting

0180).

Heat pump puts out cool air in

the heat mode and warm air in

the cool mode.

Changeover Valve (Installer Setup

Number 0190) is not configured to

match the changeover required by

the installed heat pump.

Set Changeover Valve (Installer Setup Number 0190) 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.

Set System Type (Installer Setup Number 0172) to match

the installed heating and/or cooling equipment.

Heating and cooling wires are

shorted together.

Separate the shorted heating and cooling wires.

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.

Set System Type (Installer Setup Number 0172) to match

the installed heating and/or cooling equipment.

Heating equipment does not turn

off and heat temperature setting

is set below room temperature

(Heat On is not in the display).

Heating equipment is not a heat

pump but System Type (Installer

Setup Number 0172) is set to Heat

Pump.

Set System Type (Installer Setup Number 0172) to match

the installed heating and/or cooling equipment.

Cannot set the system setting to

Heat.

System Type (Installer Setup

Number 0172) is set to Cool Only.

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.

Set System Type (Installer Setup Number 0172) to match

the installed heating and/or cooling equipment.

Table 15. Troubleshooting. (Continued)

Symptom Possible Cause Action

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

37 68-0287—1

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

and/or temperature setting is not set

above room temperature.

Set the system setting to Heat and set the temperature

setting above the 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.

Set the system setting to Cool and set the temperature

setting below the room temperature.

Wait is in the display. Compressor minimum off timer is

active.

Wait up to five minutes for the cooling or heating (heat

pump) equipment to turn on.

“Screen Locked” appears on the

screen and all or some of the

keys do not respond.

The keypad is fully or partially

locked.

Check Installer Setup Number 0670 to change keypad

locked options.

Table 15. Troubleshooting. (Continued)

Symptom Possible Cause Action

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

68-0287—1 38

COMPATIBILITY

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

Following is a list of compatible communicating products.

* 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 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

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

Table 20. UV Lights

UV100E2009

UV100E1043

UV100E3007

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

39 68-0287—1

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

VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM

® 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