®
VisionPRO IAQ
Total Home Comfort System
PRODUCT DATA
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 temperature droop control to increase
homeowner comfort.
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.
Contents
Application/Features..........................................................
Specifications/Ordering Information ..................................
68-0287-04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
WALLPLATE
3-3/8 (86)
1-1/2 (38)
3-3/8 (86)
M4488
THERMOSTAT
AND WALLPLATE
1-3/8 (35)
Fig. 3. C7089U1006 Outdoor Sensor Mounting Clip
dimensions in in. (mm).
THERMOSTAT
6 (152)
7-7/8 (200)
3-5/16 (84)
4-9/16
(116)
5-1/2
(140)
3-5/16
(84)
M23539
®
Fig. 1. VisionPRO IAQ Comfort System
dimensions in in. (mm).
M22139
Fig. 4. 32003796-001 Cover Plate dimensions in in. (mm).
7-9/32
(185)
6-57/64
(175)
4-35/64
(116)
1-21/64
(34)
FRONT VIEW
SIDE VIEW
M23544
Fig. 2. THM5421C1008 Equipment Interface Module
dimensions in in. (mm).
3
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
2-9/32
(58)
2-9/32
(58)
45/64
(18)
1-1/2 (38)
1-1/2 (38)
M23522
FRONT VIEW
SIDE VIEW
FRONT VIEW (COVER OFF)
Fig. 5. C7189U1005 Remote Indoor Sensor dimensions in in. (mm).
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.
INSTALLATION
— Radiant heat from sun or appliances.
— Concealed pipes and chimneys.
— Unheated (uncooled) areas such as an outside wall behind
the thermostat.
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.
Installing Wallplate
4. After completing installation, use these instructions to
verify the product operation.
CAUTION
Electrical Hazard.
Can cause electrical shock or equipment damage.
Disconnect power before wiring.
Selecting Location
Install the thermostat about 5 ft. (1.5m) above the floor in an area
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.
NO
YES
NO
5 FEET
NO
[1.5 METERS]
M19925
Fig. 6. Selecting thermostat location.
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
4. Position the wallplate over the holes, pulling wires
through the wiring opening. See Fig. 7.
5. Insert the mounting screws into the holes and tighten.
NOTE: It is normal for the LED to blink continuously during
startup, and while checking equipment status (Auto
Discover mode).
WALL
WIRES THROUGH WALL
AND WIRE SLOT
WALL ANCHORS (2)
WALL ANCHOR
COMMUNICATION LED
MOUNTING
HOLES
DRILL 3/16 IN. HOLES
FOR DRYWALL. DRILL
7/32 IN. HOLES FOR
PLASTER
M23541
MOUNTING
SCREWS (2)
M23543
Fig. 7. Mounting wallplate.
Installing Equipment Interface Module (EIM)
MOUNTING SCREW
M23484
CAUTION
Fig. 8. Mounting EIM.
Electrical Hazard.
Can cause electrical shock or equipment damage.
Disconnect power before wiring.
WIRING
The EIM can be mounted vertically on the HVAC equipment or
on a wall in the equipment room.
All wiring must comply with local electrical codes and
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.
sponds with system type.
2. Loosen the screws for the appropriate system type
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
4. Position the wallplate over the holes, pulling wires
through the wiring opening.
5. Insert the mounting screws into the holes and tighten.
drafts from affecting the thermostat.
Communication LED
status as follows.
Table 1. Selecting Terminal Identifications for System Type.
Wallplate Terminal Wiring Diagram
•
•
•
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.
System Type
Identifications
Reference
12
Standard Heat/Cool Conventional
StandardMultistage Conventional
up to 3 Heat/2 Cool
•
•
LED always off: Wiring problem. Check wiring to terminals
1, 2, 3.
LED always on: EIM may need replacement.
Heat Pump with
Auxiliary Heat
Heat Pump
5
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
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.
If thermostat is configured for a heat pump system
in the Installer Setup, configure changeover valve
for cool (O-factory setting) or heat (B).
2.
For wiring to a W8835 Zone panel please refer to the product
data sheet included with the panel.
M23541
Fig. 9. Inserting wires in terminal block.
1
IMPORTANT
COMMUNICATION LED
COMMUNICATION
TERMINALS
1
1
2
3
Use 18-gauge thermostat wire.
CONV. HP
W1 O/B
2
3
Table 2. Terminal Designation Descriptions.
W2 AUX
C
24 VAC
W3 AUX2
R
THM5421C1008
Terminal
Designations
Y
Y
RC
RH
Y2 Y2
Function
G
G
1
2
3
Terminal 1—data to/from thermostat
Terminal 2—power from thermostat (24Vac)
FACTORY INSTALLED
JUMPER BETWEEN R,
RC AND RH
Terminal 3—common from thermostat
(24Vac)
1
WIRE TO TERMINALS ON THERMOSTAT.
M23485
Fig. 10. Typical hookup of conventional single-stage heat
and cool system with single transformer
(1H/1C conventional).
C
24 Vac Transformer Common
24 Vac Transformer
R
RC
24 Vac Cooling Transformer
24 Vac Heating Transformer
Humidification Connection (normally open)
RH
1
COMMUNICATION LED
HUM1/HUM2
DHM1/DHM2
1
1
2
3
COMMUNICATION
TERMINALS
CONV. HP
W1 O/B
2
Dehumidification Connection (normally
open or closed based on installer setup)
3
W2 AUX
C
24 VAC
W3 AUX2
VNT1/VNT2
W1/O/B
Ventilation connection (normally open)
R
Y
Y
RC
RH
Stage 1 Heating Relay (Conventional)
Change-over Relay (Heat Pump)
Y2 Y2
G
G
W2/AUX
Stage 2 Heating Relay (Conventional)
Auxiliary Heat (fossil fuel or electric) (Heat
Pump)
OIL PRIMARY/
AQUASTAT
FACTORY INSTALLED JUMPER BETWEEN R,
AND RC (REMOVE FACTORY INSTALLED
JUMPER BETWEEN RC AND RH
W3/AUX2
Stage 3 Heating Relay (Conventional)
Auxiliary Heat (fossil fuel or electric) (Heat
Pump)
1
WIRE TO TERMINALS ON THERMOSTAT.
M23486
Fig. 11. Typical hookup of conventional single-stage heat
and cool system with oil primary (1H/1C conventional).
Y
Stage 1 Compressor Relay
Stage 2 Compressor Relay
Fan Relay
Y2
G
L
Heat Pump Equipment Monitor
Outdoor Temperature Sensor
Remote Indoor Temperature Sensor
OUT1/OUT2
IN1/IN2
DATS1/DATS2 Discharge Air Temperature Sensor
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
KEY
1
2
3
= NORMALLY OPEN, DRY CONTACTS
C
24 VAC
R
RC
RH
= NORMALLY CLOSED, DRY CONTACTS
M23685
H1
POWERED
U
HUMIDIFIER
M2
D1
H
OR
M2
1
HEAT 1 RELAY
V1
N
COMMUNICATION LED
1
1
2
3
COMMUNICATION
TERMINALS
CONV. HP
W1 O/B
T2
2
HEAT 2 RELAY
HEAT 3 RELAY
COOL 1 RELAY
COOL 2 RELAY
FAN RELAY
M23490
3
W2 AUX
C
24 VAC
W3 AUX2
Fig. 15. Typical hookup of powered humidifier.
R
Y
Y
RC
RH
Y2 Y2
G
G
1
2
3
FACTORY INSTALLED
JUMPER BETWEEN R,
RC AND RH
C
24 VAC
R
1
WIRE TO TERMINALS ON THERMOSTAT.
M23487
RC
FIELD INSTALLED
JUMPER BETWEEN
RH
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).
R AND DHM 1
H1
U
M2
D1
H
OR
NON-POWERED
DEHUMIDIFIER
M2
1
V1
N
CHANGEOVER
COMMUNICATION LED
1
1
2
3
T2
COMMUNICATION
TERMINALS
CONV. HP
W1 O/B
2
M23491
AUX 1 (HEAT 3)
AUX 2 (HEAT 4)
COMP 1
3
W2 AUX
C
Fig. 16. Typical hookup of variable speed blower for
dehumidification in low speed (contacts normally closed).
24 VAC
W3 AUX2
R
Y
Y
RC
RH
Y2 Y2
COMP 2
NOTE: Connect DHM2 to low-speed fan terminal on air han-
dler for dehumidification with air conditioner and a
low-speed fan.
G
G
FAN RELAY
FACTORY INSTALLED
JUMPER BETWEEN R,
RC AND RH
1
WIRE TO TERMINALS ON THERMOSTAT.
M23488
1
2
3
Fig. 13. Typical hookup of heat pump system
(up to 4H/2C heat pump).
C
24 VAC
R
RC
RH
1
2
3
H1
U
C
M2
24 VAC
R
D1
POWERED
H
OR
RC
DEHUMIDIFIER
M2
FIELD INSTALLED
JUMPER BETWEEN
R AND HUM 1
RH
V1
N
T2
H1
U
M23492
NON-POWERED
HUMIDIFIER
M2
D1
H
OR
Fig. 17. Typical hookup of powered whole house
dehumidifier (contacts normally open).
M2
V1
N
T2
M23489
Fig. 14. Typical hookup of non-powered humidifier.
7
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
POWER THE THERMOSTAT
1
2
3
•
24 Vac common wire only to EIM or zone panel.
C
24 VAC
R
Wiring 24 Vac Common
RC
FIELD INSTALLED
•
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.
JUMPER BETWEEN
R AND VNT 1
RH
H1
U
•
M2
D1
H
OR
M2
V1
N
NON-POWERED
VENTILATOR
T2
M23493
1. Locate and remove the tab labeled, Remove, in the
Fig. 18. Typical hookup of fresh air damper.
NOTE: Use this hookup for ventilation using a fresh air
damper.
REMOVE
TAB
1
2
3
SALTION
MVOEDURING
C
24 VAC
R
RC
RH
SALTION
MVOEDURING
H1
U
M2
M19920
D1
H
OR
M2
Fig. 21. Remove tab labeled, Remove, on thermostat back
V1
N
POWERED
VENTILATOR
T2
M23494
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
Fig. 19. Typical hookup of powered ventilation.
WALLPLATE
1
2
3
C
24 VAC
R
RC
PINS ON
BACK OF
THERMOSTAT
RH
FIELD INSTALLED
JUMPER BETWEEN
DHM 1 AND VNT 1
BLUE
H1
U
M2
TERMINAL
SCREW
BLOCK
D1
H
OR
M2
YELLOW
V1
N
DH90
GREEN
RED
T2
WHITE
FRESH
AIR
DAMPER
M23542
M23495
Fig. 22. Mount thermostat to wallplate.
Fig. 20. Hookup of Honeywell DH90 with fresh air intake for
ventilation.
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
IMPORTANT
Locate and Mount C7089U1006 Outdoor
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.
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
— 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.
200 feet.
Do not mount the sensor:
•
•
in direct sunlight.
— Avoid poor wiring connections.
— Avoid intermittent or missing building earth ground.
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.
CAUTION
Can cause electrical shock or equipment damage.
Disconnect power supply before connecting wiring.
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.
Electrical Shock Hazard.
3. Mount the clip.
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
b. Pigtail wiring can be used.
2. Mount C7089U1006 in its mounting clip.
3. Plug wiring hole using nonhardening caulk or putty.
1
WIRING HOLE
THROUGH
STRUCTURE
C7089
2
M7514
Fig. 23. Typical locations for C7089U1006 Outdoor Sensor.
Wire C7089U1006 Outdoor Sensor
1
2
USE APPROPRIATE MOUNTING MEANS FOR THE
TYPE OF STRUCTURE.
PLUG WIRING HOLE WITH NON-HARDENING CAULK
OR PUTTY.
CAUTION
M23525
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.
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.
Use shielded cable to reduce interference when
rerouting is not possible.
9
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
MON
TUE
WED
THU
FRI
SAT
SUN
YES
FAN
NO
Inside
Set To
AUTO
NO
Following
Schedule
5 FEET
(1.5 METERS)
SYSTEM
Outside
NO
HEAT
AM
SCHED
HOLD
CLOCK SCREEN MORE
M4476
M22453
Fig. 25. Typical location for C7189U1005 Indoor Sensor.
If thermostat is set to Auto Changeover System mode, press
the More key until the outside temperature is shown on the
screen.
Wire C7189U1005 Indoor Sensor
MON
TUE
WED
THU
FRI
SAT
SUN
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.
Outside
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.
SCHED
HOLD
WAKE
CLOCK SCREEN
LEAVE RETURN SLEEP CANCEL
DONE
M22448
— 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.
Locate and Mount C7189U1005 Remote
Indoor Temperature Sensor (Optional)
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.
— Avoid intermittent or missing building earth ground.
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
CAUTION
Can cause electrical shock or equipment damage.
Electrical Shock Hazard.
Disconnect power supply before connecting wiring.
a. Hot areas caused by:
(a)Concealed pipes or ducts.
Wiring must comply with applicable codes, ordinances and
regulations.
(b)Drafts from fireplaces or other heat sources.
(c)Convection or radiant heat from the sun or
electrical equipment.
1. Wire C7189U1005 Indoor Sensor to IN1and IN2 termi-
nals on the EIM. For an example of general wiring of
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.
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.
5. Level the C7189U1005 for appearance only. Device
functions correctly even when not level.
6. Install C7189U1005 cover.
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
•
•
The thermostat will display the temperature measured at
the sensor locations (internal thermostat sensor is
disabled). Sensors must be in square numbers (e.g., 4, 9,
16, and so on) and the displayed temperature will be an
average of the temperatures measured at each location.
The thermostat will display a 50-50 average of the
temperature measured at the thermostat location and the
average of the temperatures measured at the remote indoor
sensor locations. In this case, the thermostat sensor still
carries a 50% weighting of the displayed temperature.
C7189
M23523
L
1 OUT
2 OUT
1 IN
2 IN
Fig. 26. Wiring a single C7189U1005 Indoor Sensor.
Install Discharge Air Temperature Sensor
(Optional):
L
Prior to installing Discharge Air Temperature Sensor (DATS)
refer to the installation instructions included with the product for
more information on placement and wiring.
1 OUT
2 OUT
1 IN
C7189
C7189
C7189
C7189
2 IN
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.
L
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.
1 OUT
2 OUT
1 IN
C7189
C7189
C7189
C7189
C7189
C7189
C7189
C7189
C7189
2 IN
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.
M23524
NOTE: Calendar can also be set in the Installer Setup.
Fig. 27. Wiring Multiple C7189U1005 Sensors.
1. Press the arrow keys to set the year, month and day.
2. Press the Done key.
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.
SET CURRENT DAY
SET MONTH
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:
MO
WE
TH
FR
SA
SU
OK TO PICK MULTIPLE DAYS SCREEN LOCKED
CHANGE FILTER UV LAMP
•
•
The thermostat will display the temperature measured at
the sensor location (internal thermostat sensor is disabled).
The thermostat will display a 50-50 average of the
temperature measured at the thermostat location and the
remote indoor sensor location.
DONE
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:
USE ARROWS TO SET YEAR AND TIME
M22424
3. Press the arrow keys to set the current time.
4. Press the Done Key.
11
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
1. Press and release the System Key.
USE ARROWS TO SET YEAR AND TIME
THU
MO
WE
TH
FR
SA
SU
FAN
ON
Inside
AUTO
SYSTEM
EM HEAT
Following
Schedule
A
M
Humidity
SCHED HOLD CLOCK SCREEN
DONE
M22425
M23498
2. Press and hold the two blank keys on either side of the
center blank key for approximately five seconds until
screen changes.
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.
MO
TU
WE
TH
FR
SA
SU
OK TO PICK MULTIPLE DAYS SCREEN LOCKED
CHANGE FILTER UV LAMP
Inside
Set
Using Auto Discover
Following
Schedule
SYSTE
M
EM
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.
HEAT
OFF
Humidity
DONE
CANCEL
When using the thermostat with an equipment interface
module, Auto Discover will discover factory default settings
and will not receive communications as to proper system
settings. The equipment interface module is preprogrammed at
the factory as a one heat one cool product and the thermostat
will “auto discover” those settings. The equipment interface
module will be reprogrammed when the installer manually
changes the configuration in the installer set up. It is not
recommended to use Auto Discover with an equipment
interface module.
M23499
3. Release the two blank keys when the screen on the ther-
mostat matches the screen below.
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.
DONE
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.
M22442
Follow these steps to enter the Installer Setup:
68-0287—04
12
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
4. See screen below to review how the thermostat keys are
Installer Setup Numbers and Settings.
ADVANCE TO NEXT
INSTALLER SETUP
INSTALLER
SETUP
NUMBER
CURRENT
SETTING
MON
WED
THU
FRI
SAT
SUN
DONE
CHANGE THE
CURRENT
SETTING
PRESS TO EXIT
INSTALLER SETUP
M22443
5. Press the Done key to exit the Installer Setup screen.
Table 3. Installer Setup Menu.
ISU
Parameter Installer Setup
Settings
(Factory Defaults Shown in Bold)
Number
Name
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*
*Only change if used with Envirazone Panel.
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
Default = 06
Select number that represents current
calendar month.
150
USU
Date (Day)
1-31
Default = 15
Select number that represents current
calendar date.
160
USU
Schedule Options 4
Seven-day programmable
Non-programmable
0
165
USU
Restore energy
saving default
schedule
0
1
No
Yes
172
System Selection 1
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.
2
3
E
173
174
Heat Pump Type 0
Air to Air heat pump
1
Geothermal heat pump
Number of Cool/
Compressor
Stages
1
0
2
E
1
Not shown if ISU172 = 3.
none
Conventional systems = number of cooling stages.
Heat Pump systems = number of compressor
stages.
2
Auto Discover
176
180
Number of
1
0
2
1
Conventional systems = number of heating stages
(maximum of 3).
Conventional
Heat or Heat
none
2
3
Heat Pump systems = number of auxiliary heat
stages (maximum of 2).
Pump Aux Stages 3
E
Auto Discover
Fan Operation
Conventional
heat only
0
1
2
E
Gas or oil furnace equipment controls fan Only shown if ISU172 = 1 (conventional system).
in heating
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.
Electric furnace—thermostat controls fan in
heating
Equipment controls stage 1; thermostat
controls stage 2+
Auto Discover
13
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Table 3. Installer Setup Menu. (Continued)
ISU
Parameter Installer Setup
Settings
(Factory Defaults Shown in Bold)
Number
Name
Notes
Only shown if ISU172 = 2.
190
Reversing Valve
O/B
0
Changeover valve—O/B terminal is
energized in cooling
Changeover valve—O/B terminal is energized
in heating
1
200
Back-up Heat
E
Auto Discover
Electric backup heat
Fossil fuel backup heat
Only shown if ISU172 = 2 and ISU176 = 1 or
greater.
Source Applies to 0
both Aux and
EmHeat
1
210
220
230
240
External Fossil
Fuel Kit
1
External Fossil Fuel kit controls backup
heat*
*Cannot control dual fuel when used with W8835
Envirazone Panel.
0
Thermostat controls backup heat
Only shown if ISU172 = 2 and ISU200 = 1.
CPH for 1st
Stage Cool/
Compressor
1-6
3—cph recommended for compressors
1, 2, 4, 5, 6—other cycle rate settings
Auto Discover
E
CPH for 2nd
Stage Cool/
Compressor
1-6
3—cph recommended for compressors
1, 2, 4, 5, 6—other cycle rate settings
Auto Discover
Only shown if ISU174 = 2.
E
CPH for 1st
Stage
Conventional
Heat or Auxiliary
1-12
1—1 cph used for steam and gravity
Only shown if ISU172 = 2 and ISU176 = 1 or higher.
3—3 cph used for hot water system and high Default varies based on types of heating.
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
E
Auto Discover
250
260
270
CPH for 2nd
Stage
Conventional
Heat or 2nd
Stage Auxiliary
1-12
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
Only shown if ISU176 = 2 or for Heat Pump systems
with 2 stages of Auxiliary Heat.
Default varies based on types of heating.
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
E
Auto Discover
CPH for 3rd
Stage Heat
1-12
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
Only shown if ISU176 = 3.
Default varies based on types of heating.
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
E
Auto Discover
CPH for
Emergency Heat 1-12
9
Default
Only shown if heat pump is selected.
280
USU
Continuous
Backlight
0
Backlight not on continuously. Thermostat If backlight is on continuously, it is low-intensity.
backlight comes on with each key press.
Light changes to full brightness after pressing any
key.
1
Backlight is on continuously.
300
310
Changeover
Deadband
0
Manual
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.
1
Auto
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.
3
2
4
5
6
7
8
9
2.0 3°F
1.5 2°F
2.5 4°F
2.0°C
1.5°C
2.5°C
3.0°C
3.5°C
4.0°C
4.5°C
5.0°C
3.0
3.5
4.0
4.5
5.0
5°F
6°F
7°F
8°F
9°F
Note: degrees C is not same as degrees F
320
USU
Temperature
Indication Scale
0
1
Fahrenheit temperature display
Celsius temperature display
330
USU
Daylight Saving
2
0
1
Enabled (US 2007)
Disabled
Enabled (US 1987)
Set to 0 in areas that do not follow daylight savings
time.
68-0287—04
14
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Table 3. Installer Setup Menu. (Continued)
ISU
Parameter Installer Setup
Settings
(Factory Defaults Shown in Bold)
Number
Name
Notes
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
E
0
1
Auto Discover
None
Yes
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).
345
346
Dual Fuel Heat
Pump Control
1
0
2
Droop Control
See Dual Fuel Heat Pump control on page 23.
No Droop Control
Droop Control with Auxiliary heat lockout
Dual Fuel Heat
1
1 hr.
See Dual Fuel Heat Pump control on page 23.
Pump Upstage to 0
Furnace Timer (in 0.5
Disabled
0.5 hrs.
1.5 hrs.
2 hrs.
hours)
1.5
2
3
3 hrs.
4
4 hrs.
5
5 hrs.
6
6 hrs.
8
8 hrs.
10
12
14
16
10 hrs.
12 hrs.
14 hrs.
16 hrs.
347
350
Droop
2
3
4
5
The fossil fuel will turn on when the outdoor
temperature is above the balance point if the room
temperature droops below the selected droop
temperature setting, and the compressor will be
disabled.
2°F
3°F
4°F
5°F
1.0°C
1.5°C
2.0°C
2.5°C
Temperature
Heat Pump
Only shown for heat pump applications with an
outdoor temperature sensor present.
If electric backup is selected then the default is No
Compressor lockout.
40
0
5
4.5 40°F
4.5°C
Balance Point
(also compressor
lockout)
No heat pump compressor lockout
-15 5°F
-15.0°C
-12.0°C
-9.5°C
-6.5°C
-4.0°C
-1.0°C
1.5°C
10
15
20
25
30
35
45
50
55
60
-12 10°F
-9.5 15°F
-6.5 20°F
-4 25°F
-1 30°F
1.5 35°F
45°F
10 50°F
13 55°F
Temperature
7
7.0°C
10.0°C
13.0°C
15.5°C
15.5 60°F
(Show 1/2 degree C)
360
Heat Pump
Auxiliary Heat
Lockout
0
5
No heat pump auxiliary lockout
Only shown for heat pump applications with an
outdoor temperature sensor present.
-15 5°F
-15.0°C
-12.0°C
-9.5°C
-6.5°C
-4.0°C
-1.0°C
1.5°C
10
15
20
25
30
35
40
45
50
55
60
65
-12 10°F
-9.5 15°F
-6.5 20°F
-4 25°F
-1 30°F
1.5 35°F
4.5 40°F
Temperature
4.5°C
7
45°F
7.0°C
10 50°F
13 55°F
15.5 60°F
18.5 65°F
10.0°C
13.0°C
15.5°C
18.5°C
(Show 1/2 degree C)
365
366
367
Discharge Temp
Sensor
E
0
1
Auto Discover
None
Remote
Zoning High
Temperature
Limit
160
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.
0
110–170
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.
15
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Table 3. Installer Setup Menu. (Continued)
ISU
Parameter Installer Setup
Settings
(Factory Defaults Shown in Bold)
Number
Name
Notes
368
Staging
110
0
80-130
110°F (43.5°C)
Only Shown if ISU110 = 1 (Master Zone Controller)
and ISU174 = 2 or more. Must have Discharge
Temperature Sensor present.
Discharge
Temperature
High Limit
Disabled
80°F to 130°F (26.5°C to 54.5°C)
369
370
Staging
55
55°F (13°C)
Only Shown if ISU110 = 1 (Master Zone Controller)
and ISU176 = 2. Must have Discharge Temperature
Sensor present.
Discharge
Temperature
Low Limit
0
Disabled
50-60
50°F to 60°F (10°C to 15.5°C)
Indoor Humidity
Sensor
1
0
2
E
Internal—sensor in thermostat
Disabled
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
374
Indoor
E
0
1
3
8
Auto Discover
Humidification
Control
Off
Shown only if ISU370 = 1, 2 or E.
Humidify (no frost protection)
Humidify (with frost protection)
Desert Humidity Control on heat, cool, and off * DATS required for Desert Humidification
(no frost protection)*
9
Desert Humidity Control on heat, cool, and off
(with frost protection)*
Hum Fan Action
0
1
2
3
Humidify only while fan or heat is on
Humidify will force fan on
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.
Humidify only when heat is on
Humidifier operates independent of fan
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
382
Dehumidification
Control
0
1
3
None
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.
Dehumidify with Air Conditioning
Whole house Dehumidifier
Dehumidification
system modes
0
2
3
Dehumidifier in Cool or Auto (when last call
was for cooling)
Dehumidifier in Cool, Off, Heat, EmHeat, or
Auto
Dehumidifier in Cool, Off, or Auto (when last
call was for cooling)
383
Over-Cooling
Limit
Only shown if ISU379 = 1.
Only shown if ISU379 = 3.
3
1
2
1.5 3°F
0.5 1°F
1.0 2°F
1.5°C
0.5°C
1.0°C
(Show 1/2 degree C)
384
386
390
391
Dehumidification
Fan Action
0
1
System fan turns on with dehumidifier
Dehumidifier operates independent of system
fan
Whole house
dehumidification
lockout
0
1
Disabled
Enabled
Southern
Dehumidification
Away Mode
0
1
No
Yes
Not shown if ISU379 = 0.
ISU 391-394 will only be shown if ISU390 = 1.
Southern
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.
Dehumidification
Away Mode Fan
Setting
392
393
Southern
76
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.
Dehumidification 70-80
Away Mode Low
Limit
70°F–80°F
Temperature
Setting
Southern
85
Default = 85°F
70°F–99°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.
Dehumidification 70-99
Away
Temperature
Setting
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Table 3. Installer Setup Menu. (Continued)
ISU
Parameter Installer Setup
Settings
(Factory Defaults Shown in Bold)
Number
Name
Notes
394
Southern
65
Default = 65%
40%–70% relative humidity
Set the desired humidity level to maintain within the
living space
Dehumidification 40-70
Away
Dehumidification
Setting
400
Ventilation control 0
No ventilation
If ISU300 = 0, ISU401-405 will not be shown.
1
2
3
4
Ventilation on at all times
Ventilation on except during sleep period
Vent all with lockouts
Not ASHRAE
Not ASHRAE
Vent off sleep with lockouts
401
402
403
404
Number of
bedrooms
2
Default = 2
1-6
1–6 bedrooms
Total house
Sq. Ft.
10
10-50
Default = 1000 sq. ft.
1000–5000 sq. ft. in increments of 100
Ventilation CFM 160
30-195
Default = 160 CFM
30–195 CFM in increments of 5
Max ventilation
percentage limit 30-60
100
50
Default = 50%
30%–60%
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
406
Ventilation Fan
Action
1
Vent on will force fan on also
2
Vent will not force fan ON
Ventilation in
High Humidity
1
0
On
Off
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.
430
431
Ventilation
lockout
0
1
2
3
Disabled
Outdoor temperature sensor required for high and
low temperature lockouts.
Lockout for high temperatures
Lockout for low temperatures
Lockout for high and low temperatures
Ventilation
lockout high
temperature
100
90
95
38 100°F
32 90°F
35 95°F
38°C
32°C
35°C
105
110
40.5 105°F
43.5 110°F
40.5°C
43.5°C
432
450
Ventilation
lockout low
temperature
-10
-20
-15
-5
-23.5 -10°F
-29 -20°F
-26 -15°F
-20.5 -5°F
-18 0°F
-23.5°C
-29.0°C
-26.0°C
-20.5°C
-18.0°C
-0
DATS Inhibit
0
Disabled
1.5 35°F
4.5 40°F
The DATS will cycle the cooling off at the selected
temperature to prevent coil freezing.
35
40
45
50
55
60
65
1.5°C
4.5°C
7.0°C
10.0°C
13.0°C
15.5°C
18.5°C
7
45°F
10 50°F
13 55°F
15.5 60°F
18.5 65°F
500
USU
Furnace Filter
Change
Reminder
E
0
Auto Discover
Disabled
1
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
2
3
4
5
6
7
8
9
10
11
12
13
14
502
Furnace filter
0
Counts runtime Heat and Cool
Counts runtime Cool only
reminder run time 1
equipment counts
17
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Table 3. Installer Setup Menu. (Continued)
ISU
Parameter Installer Setup
Settings
(Factory Defaults Shown in Bold)
Number
Name
Notes
510
USU
Humidifier Pad
Replacement
Reminder
E
0
1
2
3
Auto Discover
Display will show Calendar Days if ISU372 = 0; Run
Time Days if ISU372 = 1 or 3.
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
520
USU
UV Lamp
Replacement
Reminder
E
0
1
2
Auto Discover
Disabled
365 Days
730 Days (2 years)
530
USU
Adaptive
Intelligent
Recovery
1
0
Adaptive
Conventional
540
USU
Number of
Periods
4
2
4 Periods
2 Periods
4 periods = Wake, Leave, Return, and Sleep
2 periods = Wake and Sleep
550
560
580
Number of
Periods:
4
4 Periods
2
2 Periods
Weekdays
Number of
Periods:
Weekend Days
4
2
4 Periods
2 Periods
Min Compressor
Off Time
5
0
1
2
3
4
5 minutes
Off
1 minute
2 minutes
3 minutes
4 minutes
600
610
Heat Temp
90
Default = 90°F
Range Stops
40-90
40°F–90°F (Show 1/2 degree C)
Cool Temp
Range Stops
60
60-99
Default = 60°F
60°F–99°F (Show 1/2 degree C)
640
USU
Clock Format
12
24
12 Hour
24 Hour
650
Extended Fan on 0
time Heat (Blower 30
Off Delay Heat) 60
90
Off
30 seconds
60 seconds
90 seconds
120 seconds
120
660
Extended Fan on 0
time Cool (Blower 30
Off Delay Heat) 60
90
Off
This can be used to remove condensation from A-
coil; however, could re-introduce humidity into the
living space.
30 seconds
60 seconds
90 Seconds
120 Seconds
120
670
USU
Keypad Lockout
0
1
2
Unlocked
Partial Locked
Full Locked
680
690
700
Temp Control
Heat
2
Standard (recommended)
Less Aggressive temp control (may cause
temp undershoot)
1
3
More Aggressive temp control (may cause
temp overshoot)
Temp Control
Cool
2
1
Standard (recommended)
Less Aggressive temp control (may cause
temp undershoot)
More Aggressive temp control (may cause
temp overshoot)
3
Temperature
Display Offset
0
0°F
0 °C — (no difference in
displayed temperature and actual room
temperature)
-3
-2
-1
1
-3°F
-2°F
-1°F
1°F
-1.5°C
-1°C
-.5°C
.5°C
2
2°F
1°C
3
3°F
1.5°C
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Table 3. Installer Setup Menu. (Continued)
ISU
Parameter Installer Setup
Settings
(Factory Defaults Shown in Bold)
Number
Name
Notes
701
Humidity Display 0
0%
Offset
-12
-12%
-11%
-10%
-9%
-8%
-7%
-6%
-5%
-4%
-3%
-2%
-1%
1%
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
1
2
2%
3
3%
4
4%
5
5%
6
6%
7
7%
8
8%
9
9%
10
11
12
10%
11%
12%
710
Restore Factory
Defaults
0
1
No
Yes
Restoring factory defaults will re-set installer setup
and programming.
INSTALLER SYSTEM TEST
UP ARROW
TURNS THE
SYSTEM ON
SYSTEM TEST
NUMBER
SYSTEM STATUS
NUMBER
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.
DONE
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
DONE KEY
UP ARROW KEY
DOWN ARROW
TURNS THE
SYSTEM OFF
EXITS INSTALLER ADVANCES TO
SYSTEM TEST
NEXT SYSTEM
TEST NUMBER
M22428
Setup Numbers.
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.
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Installer System Tests
Table 4. Installer System Test.
System Test Number
Test 1
Test Type
ISU Value
System Status Number and Description
Off
Cool Stage 1
Installer Test Cool
0
1
2
Cool Stages 1 & 2
Test 2
Test 3
Installer Test Fan
Installer Test Heat
0
1
Off
Fan On
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
Test 6
Test 7
Err
Installer Test Humidifier
Installer Test Dehumidifier
Installer Test Ventilator
Diagnostic Recall
0
1
Off
Humidifier On
0
1
Off
Dehumidifier On
0
1
Off
Ventilator On
00-99
See “Communication Error Codes” on page 35
Press the Next button to go to the beginning of the Installer Setup or press the Done button to exit the Installer System Test.
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.
Thermostat Display
OPERATION
INSIDE TEMPERATURE
SHOWS THE CURRENT INSIDE
TEMPERATURE
TUE
SHOWS CURRENT DAY
OF THE WEEK
Thermostat Keys
FAN
SET TO
SYSTEM
DOWN ARROW
LOWERS TEMPERATURE
SETTING
SHOWS FAN
SETTING
TEMPERATURE
SELECTS EM.
SHOWS THE
CURRENT SET
TEMPERATURE
HEAT/HEAT/OFF/COOL
UP ARROW
RAISES
TEMPERATURE
SETTING
FAN
SELECTS
ON/AUTO/CIRC
TU
FAN
TUE
Inside
Set To
AUTO
FAN
Inside
Set To
Following
Schedule
SYSTEM
AUTO
Following
Schedule
SYSTEM
HEAT
A
M
Humidity
HEAT
AM
SCHED HOLD CLOCK SCREE MORE
Humidity
SCHED
HOLD
CLOCK SCREEN MORE
FOLLOWING
SYSTEM
SHOWS
CURRENT
SYSTEM
POSITION
TIME
DISPLAY CURRENT
TIME OF DAY, HOLD
TIME REMAINING OR
NUMBER OF VACATION
DAYS REMAINING
SCHEDULE
SHOWS THE
SCHED
CLOCK
SETS THE
TIME
FORWARD
OR BACK
MORE
THERMOSTAT IS
FOLLOWING THE
PROGRAMMED
SCHEDULE
ENTERS
SCHEDULING
MODE
SHOWS ADDITIONAL
ACCESSORY AND
MAINTENANCE
OPTIONS
HOLD
M23501
SCREEN
SETS A PERMANENT
HOLD AND ACTIVITIES
VACATION HOLD
LOCKS OUT THE
SCREEN TO ALLOW
FOR CLEANING
M23500
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
1. Press the More key until the inside humidity level set-
point is shown.
System and Fan Settings
2. Use Up and Down arrow keys, located to the right of the
humidity setpoint, to set desired humidity level.
3. Press Done key.
System
The System key selections vary based on your heating and/or
cooling system type.
Control Dehumidification Level
Heat — Thermostat controls the heating system.
Off — Both heating and cooling systems are off.
Cool — Thermostat controls the cooling system.
®
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.
Auto — Thermostat automatically changes between heating
and cooling operation, depending on indoor temperature.
CURRENT
INDOOR
Em. Heat — Emergency heat cycles to maintain temperature.
Compressor is locked out and auxiliary heat turns on as
needed.
HUMIDITY
Fan
Inside
The Fan key selections vary based on the heating and/or
cooling system type.
DEHUMIDIFIER
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.
Humidity
MORE
DONE
CANCEL
HUMIDITY SET
POINT
DEHUMIDIFIER
SETTING
Control Humidification Level
(AUTO/OFF)
M23496
®
The VisionPRO IAQ Touchscreen Thermostat reads the
inside humidity level and allows for a humidification setting with
or without frost protection.
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.
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.
Inside
Inside
DEHUMIDIFIER
FROST
DEHUMIDIFIER
Humidity
DONE
CANCEL
M23514
MORE
DONE
CANCEL
M23518
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.
WITHOUT FROST PROTECTION
The frost setpoint is not displayed, but a humidity setpoint can
still be set.
NOTE: You must use this setting if:
—
—
No powered, whole house dehumidifier is present,
and
The system uses the air conditioner as the
dehumidifier.
21
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
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).
DONE
M23520
Ventilation occurs two ways:
AUTOMATIC
Uses installer setup to determine amount of ventilation
required based on house and equipment size. To disable
automatic ventilation, switch the ventilation setting to Off. The
user can still use the timer to request ventilation.
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).
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.”
Inside
DEHUMIDIFIER
Humidity
MORE
DONE
CANCEL
M23515
VENT
Fig. 29. Display when controlling a whole-house
dehumidifier.
Minutes
MORE
DONE
CANCEL
M23519
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.
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.
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.
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.
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.
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.
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Balance Point/Auxiliary Heat Lockout Plus Droop
(ISU 345 = 2)
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.
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 below the selected droop temperature setting,
compressor will be disabled.
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.
COMPRESSOR ONLY
AUX.
50
LOCKOUT
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.
COMPRESSOR+2 °F
DROOP UPSTAGE TO
FURNACE
BALANCE
POINT
35
FURNACE ONLY
M23497
Fig. 31. Balance Point with Auxiliary Lockout Temperature.
Dual Fuel Heat Pump Control
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.
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.
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.
COMPRESSOR ONLY
2. Choose Electric as Auxiliary (Backup) Heat Source in
Installer Setup Number 0200.
3. Choose Outdoor Temperature Sensor in Installer
Setup Number 0342.
BALANCE
POINT
30
4. Choose Compressor Lockout Temperature in Installer
Setup Number 0350.
FOSSIL FUEL ONLY
5. Choose Auxiliary Lockout Temperature in Installer
M22441
Setup Number 0360.
Fig. 30. Dual Fuel Heat Pump Operation in Heat mode with
Balance Point Set.
NOTE: There is a 5°F deadband between the Compressor
and Auxiliary Heat Lockout Temperatures.
Balance Point Plus Droop (ISU345 = 1)
Operation in Heat Mode
The fossil fuel will turn on when the outdoor temperature is
above the balance point if the room temperature droops below
the selected droop temperature setting, and the compressor
will be disabled.
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.
23
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Operation in Emergency Heat Mode
COMPRESSOR ONLY
AUXILIARY
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.
50
35
LOCKOUT
TEMPERATURE
BOTH COMPRESSOR AND
AUXILIARY HEAT
COMPRESSOR
LOCKOUT
TEMPERATURE
AUXILIARY ONLY
Operating Sequence
M19950
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
information.
Fig. 32. Heat Pump Operation with Lockout
Temperatures Set.
When the outdoor temperature is between the two
temperatures, both the Compressor and Auxiliary Heat operate.
Table 5. Sequence of Operation for Conventional Systems.
Fan Setting Call for Action Energize Terminals
Auto None
System Setting
Off
Screen Message
None
None
None
Cool or Auto
Cool or Auto
Cool or Auto
Auto
Auto
Auto
None
Y, G
None
Stage 1 Cooling
Cool On
Cool On
b
Stage 1 and Stage 2 cooling
Y, Y2 , G
None
Heat or Auto
Heat or Auto
Auto
Auto
None
None
a
Stage 1 heating
Heat On
W1, G
c
e
Heat or Auto
Heat or Auto
Auto
Auto
Stage 1 and Stage 2 heating
Heat On
Heat On
W1, W2 , G
c
d
e
Stage 1, Stage 2 and Stage 3 heating
W1, W2 , W3 , G
a
G energizes only if Installer set up number 180 is set to Option 1 (Electric Heat).
If installer setup (ISU174) is configured for two stages of cooling.
b
c
d
e
If installer setup (ISU 176) is configured for two or more stages of heating.
If installer setup (ISU 176) is configured for three stages of heating.
G energizes only if Installer set up number 180 is set to Option 1 (Electric Heat) or 2 (Hot water coil).
Table 6. Sequence of Operation for Heat Pump Systems.
System Setting Fan Setting
Call for Action
Energize Terminals
Screen message
a
a
Off
Auto
Auto
Auto
Auto
Auto
Auto
Auto
Auto
Auto
Auto
Auto
Auto
none
None
O/B
O/B
Cool or Auto
Cool or Auto
Cool or Auto
Heat or Auto
Heat or Auto
Heat or Auto
Heat or Auto
Heat or Auto
none
None
a
Stage 1 cooling
Cool On
Cool On
None
Y, G, O/B
c
a
a
Stage 1 and Stage 2 cooling
none
Y, Y2 , G, O/B
a
O/B
a
Stage 1 heating
Heat On
Heat On
Aux Heat On
Aux Heat On
None
Y, G, O/B
c
Stage 1 and Stage 2 heating
Stage 1, Stage 2 and Stage 3 heating
Stage 1, Stage 2, Stage 3 and Stage 4 heating
None
Y, Y2 , G, O/B
f
c,f
d
a
Y , Y2 , AUX , G, O/B
f
c,f
d
e
a
Y , Y2 , AUX , AUX2 , G, O/B
b
a
Em.Heat
O/B
b
d
a
Stage 1 Heating
Aux Heat On
Aux Heat On
Em.Heat
AUX , G, O/B
b
d
e
a
Stage 1 and Stage 2 heating
Em.Heat
AUX , AUX2 , G, O/B
a
b
c
d
e
f
Configure O/B in Installer Setup. Based on last piece of equipment called (cooling = O or Heating = B).
Red LED is on. See LED indication section for more details (page 22).
If installer setup (ISU 174) is configured for 2 compressor stages.
If installer setup (ISU 176) is configured for one or more stages of Auxiliary Heat.
If installer setup (ISU 176) is configured for two stages of Auxiliary Heat.
If thermostat is controlling backup heat, see temperature lockout section (page 23).
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Table 7. Indoor Air Quality Operation.
Last call
Energize
terminals
System Setting
Auto
Call For Action
Heat
Cool
a
a
Humidification
None
HUM1 and HUM2 Close
Nothing
b
e
Auto
Auto
Dehumidification
Dehumidification
None
Nothing
DHM1 and DHM2 close
b
c
c
c
Nothing
DHM1 and DHM2 open
Y and G
Auto
Ventilation
VNT1 and VNT2 Close
HUM1 and HUM2 Close
VNT1 and VNT2 Close
None
None
None
Heat or Em.Heat
Heat or Em.Heat
Humidification
Dehumidification
NA
NA
d
VNT1 and VNT2 Close
Heat or Em.Heat
Cool
Ventilation
VNT1 and VNT2 Close
NA
NA
None
None
a
Humidification
Nothing
e
Cool
Cool
Cool
Dehumidification
Dehumidification
Ventilation
NA
NA
NA
None
DHM1 and DHM2 close
c
c
c
DHM1 and DHM2 open
VNT1 and VNT2 Close
Y and G
None
a
b
c
d
e
Humidification only operates in heating or when last call was for heating.
Dehumidification only operates in cooling or when last call was for cooling.
Must be set up in installer setup (ISU 379) for dehumidification with air conditioning.
Installer setup (ISU 406) must be setup for Ventilation in high humidity or nothing will happen.
Only with whole house dehumidifier.
Multi-Stage Heat and Cool Control
In a multi-stage system, while maintaining setpoint, several
factors affect when the next stage energizes, such as load
conditions, environmental conditions, P+I control, and home
insulation. The next stage energizes when the thermostat
senses the previous stage is running at 90% capacity. This
operation is droopless control.
TUE
CHANGE FILTER UV LAMP HUMIDIFIER PAD
Inside
Set To
Following
SYSTEM
EM HEAT
Schedule
OFF
COOL
User Setup
Humidity
Follow these steps to enter the User Setup:
DONE
CANCEL
1. Press and release the System key.
M23503
THU
3. Release the center blank key when the screen on the
FAN
thermostat matches the screen below.
ON
Inside
AUTO
SYSTEM
EM EAT
Following
Schedule
A
M
Humidity
SCHED HOLD CLOCK SCREEN
M23502
DONE
2. Press and hold the center blank key for approximately
five seconds until the screen changes.
M22440
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
4. See the screen below to review how the thermostat keys
Setup numbers and settings.
Table 8. User Setup Menu. (Continued)
User
Setup User Setup
No. Name
Settings
ADVANCE TO NEXT
USER SETUP
USER SETUP
NUMBER
500 Furnace Filter
Change
0
Disabled
1
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
CURRENT
SETTING
Reminder
2
3
4
5
6
MON
WED
THU
FRI
SAT
SUN
7
8
9
10
11
12
13
14
E
60 C Days
90 C Days
120 C Days
180 C Days
365 C Days
Auto Discover
DONE
510 Humidifier Pad 0
Disabled
Replacement
Reminder
1
2
3
E
90 C Days
180 C Days
365 C Days
Auto Discover
CHANGE THE
CURRENT
SETTING
PRESS TO EXIT
USER SETUP
520 UV Lamp
0
1
2
E
Disabled
Replacement
Reminder
365 Days
M19922
730 Days (2 years)
Auto Discover
5. Press the Done key to exit the User Setup screen.
530 Adaptive
0
1
Conventional
Adaptive
Intelligent
Recovery
Table 8. User Setup Menu.
User
540 Number of
Periods
2
2 Periods
Setup User Setup
4
4 Periods
No.
Name
Settings
640 Clock Format 12
12 Hour
24 Hour
120 Date (Year
Upper)
20
21
24
670 Keypad
Lockout
0
1
2
Unlocked
Partial Locked
Full Locked
130 Date (Year
Lower)
01-99 Default = 06
140 Date (Month) 1-12 Select number that represents current
calendar month.
Default = 06
PROGRAMMING
150 Date (Day)
1-31 Select number that represents current
calendar date.
Default = 15
Preprogrammed Settings
160 Schedule
Options
4
Seven-day programmable
0
Non-programmable
165 RestoreDefault 0
No
Yes
Schedule
1
280 Continuous
Backlight
0
Backlight not on continuously.
Thermostat backlight comes on with
each key press.
Table 9. Default Program Settings.
Setpoints
Heat Cool
1
Backlight is on continuously.
320 Temperature
Indication
0
1
Fahrenheit temperature display
Celsius temperature display
Schedule
Period
Fan
Setting
Time
Scale
Wake
Leave
Return
Sleep
6:00AM 70°F (21°C) 78°F (25.5°C) Auto
8:00AM 62°F (16.5°C) 85°F (29.5°C) Auto
6:00PM 70°F (21°C) 78°F (25.5°C) Auto
10:00PM 62°F (16.5°C) 82°F (28°C) Auto
330 Daylight Saving 0
Disabled
1
Enabled (US 1987)
Enabled (US 2007)
2
400 Ventilation
control
0
1
2
No ventilation
Ventilation on at all times
Ventilation on except during sleep
period
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
back to a comfortable temperature.
Sleep—Period when you are asleep and want an energy-
saving temperature.
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
NOTE: Schedule times are in 15-minute intervals.
5. Press Up and Down keys to modify time and heat and
cool temperatures from this screen.
Edit Schedule
NOTE: The Fan setting can be programmed for On, Auto, or
Circ for each period selected. See Fan Schedule sec-
tion for more information.
1. Press Sched key.
FRI
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.
FAN
Inside
Set
AUTO
Following
Schedule
SYSTEM
HEAT
MON
TUE
WED
THU
FRI
AM
PM
Humidity
SCHED
HOLD
CLOCK SCREEN
M23504
SAVING
CHANGES
2. Press Edit key.
MON
TUE
WED
THU
FRI
SAT
SUN
OK TO PICK MULTIPLE DAYS SCREEN LOCKED
M19956
FAN
Inside
Set To
HEAT
AUTO
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.
Following
Schedule
CANCEL
PERIOD
SYSTEM
EM HEAT
HEAT
OFF
AM
PM
COOL
10. To exit schedule without saving changes, press Cancel
COOL
key any time.
AUTO
SCHED
EDIT
HOLD
WAKE
CLOCK SCREEN
LEAVE RETURN SLEEP CANCEL
DONE
Cancel a Schedule Period
M22553
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.
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.
MON
TUE
WED
THU
FRI
SAT
SUN
OK TO PICK MULTIPLE DAYS SCREEN LOCKED
FAN
Inside
Set To
MON
TUE
WED
THU
FRI
SAT
SUN
HEAT
AUTO
OK TO PICK MULTIPLE DAYS
FAN
Following
Schedule
CANCEL
PERIOD
SYSTEM
EM HEAT
HEAT
ON
HEAT
AUTO
CIRC
OFF
AM
PM
CANCEL
PERIOD
COOL
COOL
AUTO
SCHED
HOLD
WAKE
CLOCK SCREEN
LEAVE RETURN SLEEP CANCEL
AM
COOL
DONE
M22446
6. The time, temperature(s) and fan setting disappear. The
bar above the selected period is removed, indicating the
scheduled period was cancelled.
DONE
WAKE
LEAVE RETURN SLEEP CANCEL
M19955
4. Press Wake key. Once pressed, Wake flashes to show it
NOTE: To reinstate a schedule period, press arrow keys to
set desired time and temperatures.
is selected.
27
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
MON
TUE
WED
THU
FRI
SAT
SUN
Table 10. Fan Program Operation and Screen Status.
Fan
OK TO PICK MULTIPLE DAYS
FAN
HEAT
Fan
Call
for
Status
shownon
Screen
Fan
Program
Schedule
Energize
Terminal
Setting
Action
Auto
Auto
Auto
Auto
Auto
On
None
Fan
None
G
Auto
COOL
Auto/On
Auto/Circ
Auto/Circ
Circ
Circ
None
Fan
None
G
DONE
WAKE
LEAVE RETURN SLEEP CANCEL
M19957
Manual Override of Fan Schedule
7. Press Done key.
Auto—fan is automatically following the Fan schedule (choices
are Auto, On or Circulate).
Fan Schedule
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.
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).
Table 11. Manual Override of Fan Schedule Operation.
Screen
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
Message
Under
Fan
Schedule
Override
Setting
Call
for
Action
Fan
Setting
Energize
Terminal
Setting
MON
TUE
WED
THU
FRI
SAT
SUN
Auto
Auto
Auto
On
On
Fan
None
Fan
—
G
On
Circ
Circ
—
OK TO PICK MULTIPLE DAYS SCREEN LOCKED
Circ
Circ
None
G
FAN
Inside
Set To
HEAT
AUTO
a
—
Auto
Following
Schedule
CANCEL
PERIOD
M
EAT
EAT
On
Circ
Circ
None
None
Circ
On
Fan
—
G
Circ
—
OFF
AM
PM
COOL
COOL
—
a
Circ
Auto
AUTO
SCHED
HOLD
WAKE
CLOCK SCREEN
LEAVE RETURN SLEEP CANCEL
Circ
On
Fan
G
On
DONE
a
Auto Override resumes the Fan Program in each schedule
period (Wake, Leave, Return and Sleep)
M22447
Fan Control
®
If the Fan program is scheduled, Auto is shown and any
programmable mode that is set; for example, if during Wake
period, Fan is set to Auto, only Auto is shown in the Fan area.
However, if during the Wake period, fan is scheduled to On,
both Auto and On are shown. Auto indicates fan is running its
schedule; On indicates Fan schedule is set to On.
OPERATE VISIONPRO IAQ
Set Time
1. Press Clock.
2. Use arrows to set current time.
THU
FAN
ON
Inside
Set
AUTO
Following
Schedule
SYSTEM
HEAT
AM
Humidity
SCHED
HOLD
CLOCK SCREEN
M23505
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
PERMANENT HOLD
Permanent Hold changes the temperature setting until
Permanent Hold is cancelled.
TUE
1. Press Hold key. “Permanent Hold” appears on the
screen.
2. Press Up or Down arrow next to the temperature you
want to set during “Hold.”
TUE
AM
FAN
Inside
Set To
AUTO
DONE
CANCEL
M19958
SYSTEM
3. Press Done key.
HEAT
AM
IMPORTANT
Humidity
CLOCK SCREEN
Permanent
Hold
The current day of the week should already be set
correctly. If not, see Installer Setup to set the day.
SCHED HOLD
CANCEL
M23507
Set Temperature Overrides
The thermostat has four temperature override options: Hold
Temperature Until, Permanent Hold, Vacation Hold, and
Southern Dehumidification Away Setting.
3. Press Cancel key to cancel “Permanent Hold” and
resume the schedule.
VACATION HOLD
HOLD TEMPERATURE UNTIL (TEMPORARY HOLD)
Holds temperature temporarily until the next scheduled period
time or until the time the user sets.
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.)
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.
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: 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.
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.
2. Press Up or Down arrow next to the Time key to set
desired time for the thermostat to resume schedule.
TUE
THU
FAN
FAN
Inside
Set
Inside
Set To
AUTO
AUTO
SYSTEM
SYSTEM
Hold Temperature
Until
Hold Temperature
Until
HEAT
HEAT
DAYS
PM
Humidity
CLOCK SCREEN
Humidity
SCHED
HOLD
SCHED
CLOCK SCREEN
CANCEL
M23506
CANCEL
M23508
4. To cancel the Vacation Hold override early, press the
3. Press the Cancel or Sched key to cancel “Hold
Cancel key.
Temperature Until” and resume schedule.
NOTE: When the number of days of Vacation Hold expires,
the screen shows “Following Schedule” to indicate
that Vacation Hold has ended.
NOTE: Once “Hold Temperature Until” time is reached, the
thermostat shows “Following Schedule” on the screen
to indicate that “Temporary Hold” has ended.
29
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
SOUTHERN DEHUMIDIFICATION AWAY SETTING
Screen Locks
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.
TU
SCREEN LOCKED
Set
FAN
Inside
AUTO
Following
Schedule
FRI
SYSTEM
HEAT
FAN
Inside
Set To
AUTO
Humidity
SCHED HOLD CLOCK SCREE MORE
SYSTEM
HEAT
DEHUMIDIFIER
M23509
AM
COOL
Permanent
Hold
Partially Locked Screen
MORE
CANCEL
M23521
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.
1. Press Hold three times to enter the Southern Dehumidifi-
cation Away Setting.
2. These settings can only be changed in installer setup.
In this mode, all keys are locked except the Temperature Up
and Down arrow keys:
Clean Thermostat Screen
— 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.
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.
— 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.”
OK TO
CLEAN
SCREEN
Humidification Control
If you have a humidifier and outdoor temperature sensor, you
can use Frost Control to reduce window condensation.
1. Press MORE until the humidifier screen is displayed.
2. Press the Up or Down arrow to set the humidity and
Frost Control level. (Use a lower Frost Control level if
frost appears on windows. Use a higher setting if the air
is too dry.)
3. Press DONE to save and exit, or press CANCEL to exit
without saving changes.
M19964
2. Use damp cloth slightly moistened with water or house-
hold glass cleaner to clean the screen.
3. Repeat the above steps, as necessary.
IMPORTANT
Do not spray any type of liquid directly on the thermo-
stat itself. If using household glass cleaner, spray
cleaner on cloth. Then use a cloth to clean the ther-
mostat screen.
NOTE: If you do not have an outdoor temperature sensor, the
Frost Control level will not be displayed.
Dehumidification Control
4. Press the Done key to return to the Home Screen and
If installed to control a dehumidifier, the thermostat can activate
it as needed to reduce humidity.
normal operation.
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).
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
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).
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.
3. Press DONE to save and exit, or press CANCEL to exit
without saving changes.
MON
TUE
WED
THU
FRI
SAT
SUN
CHANGE FILTER UV LAMP HUMIDIFIER PAD
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.
RESET
DAYS
3. Press DONE to save and exit, or press CANCEL to exit
without saving changes.
SCHED
EDIT
HOLD
WAKE
CLOCK SCREEN MORE
LEAVE RETURN SLEEP CANCEL
DONE
M22449
If programmed for auto-ventilation by the installer, the
thermostat will ventilate your home as needed.
2. Press the Edit key.
3. Use the Up and Down keys to change the number of run-
Indoor Air Quality Reminders
time or calendar days.
MON
TUE
WED
THU
FRI
SAT
SUN
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.
CHANGE FILTER UV LAMP HUMIDIFIER PAD
DAYS
MON
TUE
WED
THU
FRI
SA
SUN
OK TO PICK MULTIPLE DAYS SCREEN LOCKED
CHANGE FILTER UV LAMP HUMIDIFIER PAD
FAN
SCHED
HOLD
WAKE
CLOCK SCREEN
LEAVE RETURN SLEEP CANCEL
Inside
Set To
DONE
AUTO
M22450
Following
Schedule
SYSTEM
RESET
4. Press the Done key to go back to the viewing screen.
HEAT
PM
MON
TUE
WED
THU
FRI
SAT
SUN
Humidity
CHANGE FILTER UV LAMP HUMIDIFIER PAD
SCHED
HOLD
CLOCK SCREEN MORE
M23511
RESET
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.
DAYS
SCHED
EDIT
HOLD
WAKE
CLOCK SCREEN MORE
LEAVE RETURN SLEEP CANCEL
DONE
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:
M22449
31
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
5. Press the Reset key to activate the new number of days
NOTE: While the reminder is set according to calendar days,
the display shows the equivalent run time days.
selected in the previous screen.
MON
TUE
WED
THU
FRI
SAT
SUN
MON
TUE
WED
THU
FRI
SA
SUN
CHANGE FILTER UV LAMP HUMIDIFIER PAD
CHANGE FILTER UV LAMP HUMIDIFIER PAD
RESET
RESET
DAYS
DAYS
SCHED
EDIT
HOLD
WAKE
CLOCK SCREEN MORE
LEAVE RETURN SLEEP CANCEL
SCHED
EDIT
HOLD
WAKE
CLOCK SCREEN MORE
LEAVE RETURN SLEEP CANCEL
M23517
DONE
DONE
M22451
6. Press the Done key to return to the Home screen.
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:
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.
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-
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.
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.
MON
TUE
WED
THU
FRI
SA
SUN
CHANGE FILTER UV LAMP HUMIDIFIER PAD
Temperature Recovery
The thermostat feature, Adaptive Intelligent Recovery™,
eliminates all guesswork when setting the thermostat schedule.
RESET
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.
DAYS
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.
SCHED
EDIT
HOLD
WAKE
CLOCK SCREEN MORE
LEAVE RETURN SLEEP CANCEL
M23516
DONE
To view or reset the reminder before it expires, follow these
steps using the More key:
The thermostat alerts that the heating or cooling system is
coming on before a scheduled time by showing “Recovery” on
the screen.
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.
TUE
FAN
Inside
Set To
AUTO
Following
Schedule
Recovery
SYSTEM
6. Press the Done key to return to the Home Screen.
HEAT
UV Lamp Reminder
PM
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.
Humidity
SCHED
HOLD
CLOCK SCREEN MORE
M23512
The remaining calendar days can be viewed by pressing the
More key.
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
NOTE: It takes about a week for the thermostat to adjust to
local weather, the schedule, the construction of the
home and the heating and/or cooling system. Each
day it adjusts the next day’s recovery start time
accordingly.
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.
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.
WED
FAN
Inside
Set To
AUTO
Wait
Following
SYSTEM
HEAT
Schedule
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.
AM
PM
COOL
Humidity
SCHED
HOLD
CLOCK SCREEN MORE
M23513
a
When the minimum-off timer expires, “Cool On” or “Heat On”
appears in the display and the compressor and fan turn on.
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.
_________
aHeat Pumps only.
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.
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.
THERMOSTAT
COOL SETPOINT
PROPORTIONAL COOL
CONTROL POINT
TUE
P+I CONTROL
POINT
FAN
Inside
Set
AUTO
P+I CONTROL POINT
Following
Schedule
SYSTEM
PROPORTIONAL HEAT
CONTROL POINT
THERMOSTAT
HEAT SETPOINT
PM
COOL
Humidity
HEATING
50
COOLING
50
SCHED
HOLD
CLOCK SCREEN MORE
100
0
100
M23678
PERCENT LOAD
M4414
If thermostat is set to Auto Changeover System mode, press
the More key until the humidity level is shown on the screen.
Fig. 33. Proportional temperature control versus P+ I
temperature control.
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®
VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Table 12. Sensor Resistance at
Outdoor Temperature.
MON
TUE
WED
THU
FRI
SA
SUN
Outdoor
Temperature
Outdoor
Temperature
Inside
Ohms of
Ohms of
Resistance
°F
-20
-18
-16
-14
-12
-10
-8
°C
Resistance
106926
100923
95310
90058
85124
80485
76137
72060
68237
64631
61246
58066
55077
53358
49598
47092
44732
42506
40394
38400
36519
34743
33063
31475
29975
28558
27219
25949
24749
23613
22537
21516
20546
19626
18754
17926
°F
52
°C
-28.9
-27.8
-26.7
-25.6
-24.4
-23.3
-22.2
-21.1
-20.0
-18.9
-17.8
-16.7
-15.6
-14.4
-13.3
-12.2
-11.1
-10.0
-8.9
11.1
12.2
13.3
14.4
15.6
16.7
17.8
18.9
20.0
21.1
22.2
23.3
24.4
25.6
26.7
27.8
28.9
30.0
31.1
32.2
33.3
34.4
35.6
36.7
37.8
38.9
40.0
41.1
42.2
43.3
44.4
45.6
46.7
47.8
48.9
17136
16387
15675
14999
14356
13743
13161
12607
12081
11578
11100
10644
10210
9795
9398
9020
8659
8315
7986
7672
7372
7086
6813
6551
6301
6062
5834
5614
5404
5203
5010
4826
4649
4479
4317
54
56
58
SCHED
HOLD
WAKE
CLOCK SCREEN
LEAVE RETURN SLEEP CANCEL
M23679
60
DONE
62
64
-6
66
C7089U1006 Outdoor Temperature Sensor
-4
68
-2
70
Operation
0
72
When installed with Thermostat Installer Setup Number 0342
set to 1, the outside temperature can be displayed on the
2
74
4
76
6
78
8
80
MON
TUE
WED
THU
FRI
SAT
SUN
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
82
FAN
84
Inside
Set To
AUTO
86
Following
Schedule
SYSTEM
88
Outside
HEAT
-7.8
90
AM
-6.7
92
-5.6
94
SCHED
HOLD
CLOCK SCREEN MORE
-4.4
96
M22453
-3.3
98
-2.2
100
102
104
106
108
110
112
114
116
118
120
Fig. 34. Outside temperature reading on
®
VisionPRO IAQ Thermostat.
-1.1
0.0
The C7089U1006 Outdoor Sensor converts outdoor ambient
temperature to a resistance that the thermostat can interpret.
1.1
2.2
The C7089U1006 has a negative temperature coefficient
(NTC), which means that resistance decreases as the
temperature increases. See Table 12.
3.3
4.4
5.6
Checkout
6.7
Allow C7089U1006 Outdoor Sensor to absorb outdoor air for a
minimum of twenty minutes before taking a reading.
7.8
8.9
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.
10.0
—
C7189U1005 Remote Indoor Temperature
Sensor
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.
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
Calibration
The C7089U1006 Outdoor Sensor is calibrated at the factory
and cannot be recalibrated in the field.
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
installed with Thermostat Installer Setup Number 340 set to 2,
the temperature displayed on the thermostat home screen as
Inside Temperature will be a 50/50 average between the
temperature sensed at the remote sensor location and the
temperature sensed at the thermostat location.
Table 13. Sensor Resistance at Room Temperature.
Room
Temperature
Room
Temperature
Ohms of
Ohms of
Resistance
°F
64
66
68
70
°C
Resistance
°F
96
°C
17.8 13161
18.9 12607
20.0 12081
21.1 11578
35.6 6813
36.7 6551
37.8 6301
—
The C7189U1005 Wall Mount Temperature Sensor converts
room temperature to a resistance that the thermostat can
interpret.
98
100
The C7189U1005 has a negative temperature coefficient
(NTC), which means that resistance decreases as the
COMMUNICATION ERROR CODES
The C7189U1005 can be used to provide one remote sensor
multiple C7189U1005 Sensors connected, as shown in Fig. 27.
®
VisionPRO IAQ can alert the homeowner and installer to
problems with the HVAC equipment, thermostat, or equipment
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.
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.
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.
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
®
Calibration
Table 14. VisionPRO IAQ Error Codes.
The C7189U1005 Wall Mount Temperature Sensor is
Error Code
027
Meaning
calibrated at the factory and cannot be recalibrated in the field.
Faulty thermostat (must be replaced)
Duplicate thermostat zone detected
Duplicate UV timer
035
036
037
038
039
040
050
052
053
054
089
090
091
Table 13. Sensor Resistance at Room Temperature.
Room
Temperature
Room
Duplicate filter timer
Temperature
Ohms of
Ohms of
Duplicate humidifier pad timer
Duplicate indoor humidity sensor
Compressor should be running but it is not
Duplicate outdoor temperature sensor
Faulty post-coil air discharge sensor
Faulty outdoor temperature sensor
Faulty indoor humidity sensor
°F
40
42
44
46
48
50
52
54
56
58
60
62
°C
Resistance
°F
72
74
76
78
80
82
84
86
88
90
92
94
°C
Resistance
4.4 22537
5.6 21516
6.7 20546
7.8 19626
8.9 18754
10.0 17926
11.1 17136
12.2 16387
13.3 15675
14.4 14999
15.6 14356
16.7 13743
22.2 11100
23.3 10644
24.4 10210
25.6 9795
26.7 9398
27.8 9020
28.9 8659
30.0 8315
31.1 7986
32.2 7672
33.3 7372
34.4 7086
Heating/cooling equipment is missing
Data interface is continuously busy
Thermostat is not receiving data from other
equipment
118
119
121
Faulty discharge air temperature sensor
Faulty temperature sensor
Duplicate post-coil air discharge sensor
35
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®
VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
TROUBLESHOOTING
Table 15. Troubleshooting.
Symptom
Possible Cause
Action
Display does not come on
Thermostat is not being powered
Check if the thermostat is mounted and latched on the wall
plate. If not:
—
Mount and latch the thermostat on the wallplate.
Check if the circuit breaker is tripped or the fuse is blown; if
it is:
—
Reset the circuit Breaker or replace the fuse.
Check if the power switch at the equipment is in the off
position; if it is:
—
Set to the on position.
Check for 24 Vac between terminals 2 and 3 at the
thermostat.
—
—
Replace any broken wires if 24Vac is not present.
Replace thermostat if 24Vas is present.
Check for 24 Vac between terminals R and C at the
Equipment interface module.
—
—
If 24Vac is not present consult electrician.
If 24 Vac is Present replace Equipment interface
module.
Temperature setting does not
change
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 activated
calling for heat or cool.
Thermostat minimum off timer is
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 Set system selection to correct setting.
or Cool
Heating or cooling equipment is not Check Wiring.
operating Check installer setup number 172 and verify the correct
Heating or cooling does not
come on and thermostat is
calling for heat or cool.
system type is chosen.
Verify operation of equipment in system test mode.
Heat does not turn on (“Heat On” Heating Equipment failure
is solid in the display)
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.
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Table 15. Troubleshooting. (Continued)
Possible Cause
Symptom
Action
Cooling does not turn on (“Cool Cooling Equipment failure
On” is solid in the display)
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 Stage configuration is not set
Set the stage configuration in installer setup for additional
stages of cool (ISU 174) or additional stages of heat (ISU
176).
energize
correctly to match the number of
selected stage
Terminals not connected properly at Check that 24 Vac is present at W2/AUX and W3/AUX2 for
EIM
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 Fan Control in Heating is set to Gas Set Fan Control in Heating to Electric Furnace (Setting
heat (electric furnace).
or Oil Furnace (Setting 0180).
0180).
Heat pump puts out cool air in
Changeover Valve (Installer Setup Set Changeover Valve (Installer Setup Number 0190) to
the heat mode and warm air in Number 0190) is not configured to match the changeover required by the installed heat pump.
the cool mode.
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 Set System Type (Installer Setup Number 0172) to match
pump but the System Type (Installer the installed heating and/or cooling equipment.
Setup Number 0172) is set to Heat
Pump.
Heating and cooling wires are
shorted together.
Separate the shorted heating and cooling wires.
Heating equipment is running in Heating equipment is not a heat
Set System Type (Installer Setup Number 0172) to match
the installed heating and/or cooling equipment.
the cool mode.
pump but System Type (Installer
Setup Number 0172) is set to Heat
Pump.
Heating equipment does not turn Heating equipment is not a heat
off and heat temperature setting pump but System Type (Installer
is set below room temperature Setup Number 0172) is set to Heat
(Heat On is not in the display). Pump.
Set System Type (Installer Setup Number 0172) to match
the installed heating and/or cooling equipment.
Cannot set the system setting to System Type (Installer Setup
Set System Type (Installer Setup Number 0172) to match
Heat.
Number 0172) is set to Cool Only. the installed heating and/or cooling equipment.
Cannot set the system setting to System Type (Installer Setup
Set System Type (Installer Setup Number 0172) to match
Cool.
Number 0172) is set to Heat Only or the installed heating and/or cooling equipment.
Heat Only with Fan.
37
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Table 15. Troubleshooting. (Continued)
Symptom
Possible Cause
Action
Heat On is not in the display.
System setting is not set to Heat
and/or temperature setting is not set setting above the room temperature.
above room temperature.
Set the system setting to Heat and set the temperature
Cool On is not in the display.
Wait is 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.
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 The keypad is fully or partially
Check Installer Setup Number 0670 to change keypad
locked options.
screen and all or some of the
keys do not respond.
locked.
68-0287—04
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
COMPATIBILITY
Recommend the following products for use with the VisionPRO® IAQ.
Table 16. Humidifiers
HE440A1005—Powered Steam Humidifier with 13 gpd capacity
HE365A1006—Powered Bypass Flow-through humidifier with 18 gpd capacity
HE265A1007—Bypass Flow-through humidifier with 17 gpd capacity
HE225A1006—Bypass Flow-through humidifier with 12 gpd capacity
Table 17. Dehumidifier
DH90A1007—90 Pint Whole House Dehumidifier
Table 18. Ventilation
HR150B1005—heat recovery ventilator 150cfm with built in defrost
HR200B1005—heat recovery ventilator 200cfm with built in defrost
ER150B2006—energy recovery ventilator 150cfm with built in defrost
ER150C2004—energy recovery ventilator 150cfm with no defrost
ER200B2006—heat recovery ventilator 200cfm with built in defrost
ER200C2004—heat recovery ventilator 200cfm with no defrost
EARD5—5” round damper NC Power Open/Spring Close
EARD6—6” round damper NC Power Open/Spring Close
EARD7—7” round damper NC Power Open/Spring Close
EARD8—8” round damper NC Power Open/Spring Close
Following is a list of compatible communicating products.
Table 19. Communicating Products
THM5421C—Equipment Interface Module Universal up to 4H2C systems
T8635L1013*—3H3C communicating Thermostat
W8635A1006—Equipment Interface Module for 2H2C conventional systems
W8635B1004—Equipment Interface Module for 2H2C heat pump systems
W8735A1005—EnviraCOM Serial Port Adapter
W8735B1003—Telephone Access Module
W8735D1009—Telephone Access Module two Channel communicating
W8735D1017—Telephone Access Module four channel communicating
W8835A1004—Envirazone Zone Panel
C7835A1009—Communicating Discharge Air Sensor
W8703A1003—Damper Interface Module
L7224C1004—120VAC Electronic Aquastat
L7248—Aquastat
R7184—Oil Primary
* T8635L thermostats used with TH9421C thermostats must be used with a W8835A Zone Panel and the TH9421C must be the
Master Zone Controller (zone 1 thermostat)
Table 20. UV Lights
UV100E2009
UV100E1043
UV100E3007
39
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VISIONPRO IAQ TOTAL HOME COMFORT SYSTEM
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
® U.S. Registered Trademark
© 2011 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—04 M.S. Rev. 03-11
Toronto, Ontario M1V 4Z9
customer.honeywell.com
Printed in U.S.A.
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