TH8110
PRODUCT DATA
68-0280-01
® U.S. Registered Trademark
© 2011 Honeywell International Inc.
All Rights Reserved
VisionPRO™ 8000 Touchscreen
Programmable Thermostat
APPLICATION
The VisionPRO 8000 Touchscreen Programmable Thermostat
is an effortless, 7-Day programmable thermostat that provides
universal system compatibility, precise comfort control and is
easy-to-program.
The TH8110 Thermostats provide temperature control for gas,
oil, electric and heat pumps for 1 heat, 1 cool systems.
The TH8320 Thermostats provide temperature control for gas,
oil, electric and heat pumps for up to 3 heat, 2 cool systems
including dual fuel operation.
The TH8321 Thermostats provide temperature control for gas,
oil, electric and heat pumps for up to 3 heat, 2 cool systems
including dual fuel operation plus dehumidification control.
FEATURES
• Large, clear display with backlight shows the current
and set temperature and time—even in the dark.
• Menu-driven programming make setup effortless.
• Beautiful ergonomic design is smart and sophisticated
to match your customers’ lifestyle.
• Touchscreen interaction
• Real-time clock keeps time during power failures and
automatically updates to daylight savings.
• "Saving Changes" notification lets you know when the
schedule changes have been saved.
• Change/check reminders let you know when to service
or replace filters or batteries.
• Various Hold options allow you to override the
program schedule, as desired.
• Speedy same-schedule programming—no need to
copy multiple days.
• Armchair programming allows you to remove the
thermostat from the wall for programming.
• Programmable fan offers increased air quality when
combined with a Honeywell whole-house air cleaner.
Contents
Application/Features..........................................................1
Specifications/Ordering Information ..................................2
Installation .........................................................................4
Wiring ................................................................................5
Power the Thermostat .......................................................11
Installer Setup ...................................................................15
Installer System Test .........................................................20
Operation...........................................................................21
Programming.....................................................................23
Troubleshooting.................................................................38
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
68-0280—01 2
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1985 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
SPECIFICATIONS
Thermostat Description:
Electrical Ratings:
Temperature Setting Range:
Heating: 40°F to 90°F(4.5°C to 32°C).
Cooling: 50°F to 99°F (10°C to 37°C).
Operating Ambient Temperature:
TH8000 VisionPRO™ Thermostats: 0°F to 120°F
(-18°C to 49°C).
C7089U: -40°F to 120°F (-40°C to 49°C).
C7189U: 45°F to 88°F (7.2°C to 32°C).
Shipping Temperature:
TH8000 VisionPRO™ Thermostats: -30 °F to 150 °F
(-34.4°C to 65.6°C).
Operating Relative Humidity (Non-condensing):
TH8000 VisionPRO Thermostats: 5% to 90%.
C7089U: 5% to 95%.
C7189U: 5% to 95%.
Humidity Setting Range (TH8321 models only):
Cooling: 40% to 80% RH.
Humidity Display Range (TH8321 models only):
0% to 99%.
Cycle Rates (at 50% Load):
Heating: Selectable 1 - 12 cycles per hour.
Cooling: Selectable 1 - 6 cycles per hour.
Finish:
TH8000 VisionPRO™ Thermostats: Premier White® color.
C7189U Wall Mount Remote Indoor Sensor: Premier White®
color.
Clock Accuracy: +/- 1 minute per month.
Batteries:
Three replaceable AAA alkaline batteries: Power thermostats
when 24 Vac common is not used. Non-replaceable
lithium battery with ten-year life under normal use to hold
calendar and time settings. Alkaline batteries keep calen-
dar and time after lithium battery is no longer functional.
Resistance Characteristics of Remote Sensors:
C7089U Outdoor Sensor: Negative temperature coefficient
(NTC) means that resistance decreases as the
temperature increases. See Table 13 in the Operation
section for sensor resistance characteristics.
C7189U Remote Indoor Sensor: Negative temperature
coefficient (NTC), means that resistance decreases as the
temperature increases. See Table 14 in the Operation
section for sensor resistance characteristics.
Cool Indication:
TH8000 VisionPRO™ Touchscreen Thermostats show "Cool
On" on the screen when Cool is activated.
Heat Indication:
TH8000 VisionPRO™ Touchscreen Thermostats show “Heat
On” on the screen when Heat is activated.
Feature Description
Powering methods • Battery only
• Common wire only
• Common wire with battery backup
System types (up to
3 heat/2 cool or up
to 1heat/1cool,
depending on
model)
• Gas, oil or electric heat with air
conditioning
• Warm air, hot water, high-efficiency
furnaces, heat pumps, steam and
gravity
• Heat only—includes power to open
and power to close zone valves
(series 20) and normally-open zone
valves
• Heat only with fan
• Cool only
• 750 mV heating systems
Changeover Manual or Auto changeover selectable
System setting Heat-Off-Cool-Auto (Em. Heat for heat
pumps)
Fan setting Auto-On-Circ
Terminal Voltage (50/60 Hz) Running Current
W Heating 20 - 30 Vac .02 - 1.0A
W Heating
(Powerpile)
750 mV dc 100 mA dc
Y Cooling 20 - 30 Vac .02 - 1.0A
G Fan 20 - 30 Vac .02 - .60A
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
3 68-0280—01
Auxiliary Heat Indication:
TH8000 VisionPRO™ Touchscreen Thermostats show “Aux.
Heat On” on the screen when Auxiliary Heat is activated.
Emergency Heat Indication:
TH8000 VisionPRO™ Touchscreen Thermostats show “Heat
On” on the screen when Emergency Heat is activated and
the System mode is in the Em. Heat position.
Calibration:
C7089U, C7189U and TH8000 VisionPRO™ Touchscreen
Thermostats are factory-calibrated and require no field
calibration.
Interstage Differential:
TH8000 VisionPRO™ Touchscreen Thermostats operate with
droopless control. Once the thermostat senses that
1st stage is running at 90% capacity, the thermostat
energizes 2nd stage.
Nomenclature:
Mounting Means:
TH8000 VisionPRO™ Touchscreen Thermostat: Mounts
directly on the wall in the living space using mounting
screws and anchors provided. Fits a vertical or horizontal
2 x 4 in. junction box.
C7089U Outdoor Sensor: Mounts outside of living space with
mounting clip and screws provided.
C7189U Remote Indoor Sensor: Mounts directly on the wall
using mounting screws and anchors provided. Fits a
vertical 2 x 4 in. junction box.
Cover Plate:
32003796-001 Cover Plate is used to cover marks left on the
wall by the old thermostat.
Dimensions:
TH8000 Touchscreen Thermostat: see Fig. 1.
C7089U Outdoor Sensor Mounting Clip: see Fig. 2.
32003796-001 Cover Plate: see Fig. 3.
C7189U Remote Indoor Sensor: see Fig. 4.
Fig. 1. TH8000 Touchscreen Thermostat
dimensions in in. (mm).
Fig. 2. C7089U Outdoor Sensor Mounting Clip
dimensions in in. (mm).
Fig. 3. 32003796-001 Cover Plate dimensions in in. (mm).
Series
System
Stages Application
Power and System
Changeover
VisionPRO™
8000
Touchscreen
11 - 1H/1C
32 - 3H/2C
0 - Standard
1 - Humidity
Sensor
U - Universal (Auto
changeover and/or
manual change-
over) dual powered,
system flexibility,
schedule flexibility.
M22421
6 (152)
THERMOSTAT
4-9/16
(116)
3-3/8 (86)
WALLPLATE
3-3/8 (86)
THERMOSTAT
AND WALLPLATE
1-3/8 (35)
M4488
1-1/2 (38)
7-7/8 (200)
3-5/16 (84)
3-5/16
(84)
M22139
5-1/2
(140)
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
68-0280—01 4
Fig. 4. C7189U Remote Indoor Sensor dimensions in in. (mm).
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow the
instructions can damage the product or cause a hazard-
ous condition.
2. Check the ratings given in the instructions to make sure
the product is suitable for your application.
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions to
check out the product operation.
Selecting Location
Install the thermostat about 5 ft. (1.5m) above the floor in an
area with good air circulation at average temperature. See
Fig. 5.
Fig. 5. Selecting thermostat location.
Do not install the thermostat where it can be affected by:
— Drafts or dead spots behind doors and in corners.
— Hot or cold air from ducts.
— Radiant heat from sun or appliances.
— Concealed pipes and chimneys.
— Unheated (uncooled) areas such as an outside wall behind
the thermostat.
Installing Wallplate
CAUTION
Electrical Hazard.
Can cause electrical shock or equipment damage.
Disconnect power before wiring.
The thermostat can be mounted horizontally on the wall or on
a 4 in. x 2 in. (101.6 mm x 50.8 mm) wiring box.
1. Position and level the wallplate (for appearance only).
2. Use a pencil to mark the mounting holes.
3. Remove the wallplate from the wall and, if drywall, drill
two 3/16-in. holes in the wall, as marked. For firmer
material such as plaster, drill two 7/32-in. holes. Gently
tap anchors (provided) into the drilled holes until flush
with the wall.
M4465
4-5/8
(117)
4-5/8
(117)
2-3/4 (70)
2-3/4 (70)
1-1/8
(29)
FRONT VIEW SIDE VIEW FRONT VIEW (COVER OFF)
3-1/4
(83)
5 FEET
[1.5 METERS]
YES
NO
NO
NO
M19925
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
5 68-0280—01
4. Position the wallplate over the holes, pulling wires
through the wiring opening. See Fig. 6.
5. Insert the mounting screws into the holes and tighten.
Fig. 6. Mounting wallplate.
WIRING (FIG. 9 - 21)
All wiring must comply with local electrical codes and
ordinances.
1. Select set of terminal identifications (Table 1) that
corresponds with system type (conventional or heat
pump in Fig. 7).
2. Loosen the screws for the appropriate system type
selected; see Table 1. See Table 2 for terminal
designation descriptions. Insert wires in the terminal
block under the loosened screw. See Fig. 8.
3. Securely tighten each screw.
4. Push excess wire back into the hole.
5. Plug the hole with nonflammable insulation to prevent
drafts from affecting the thermostat.
6. See Fig. 9 through 21 for typical wiring hookups.
Fig. 7. Selecting terminal identifications for
system type.
Fig. 8. Inserting wires in terminal block.
IMPORTANT
Use 18 gauge thermostat wire.
WALL
MOUNTING
HOLES
M19916
MOUNTING
SCREWS (2)
WALL ANCHORS (2)
WIRES THROUGH WALL
AND WIRE SLOT
CO
NVENTI
O
NA
L
SC
REW TERMINAL
S
H
EAT P
UMP
M19951
Y2
L
E
AUX
S1
S2
W2
S1
S
2
RC
R
O/B
Y
G
C
R
C
W
Y
G
C
Table 1. Selecting Terminal Identifications for
System Type.
System Type
Wallplate
Ter min al
Identifications
Wiring
Diagram
Reference
Standard Heat/Cool Conventional 9, 10
Heat Only Conventional 11
Heat Only with Fan Conventional 12
Heat Only (Series 20)
Power to open and
power to close zone
valves
Conventional 13
Normally Open Zone
Valves—Heat Only
Conventional 14
Cool Only Conventional 15
Standard Multistage up
to 2 Heat/2 Cool
Conventional 16, 17
Heat Pump with No
Auxiliary Heat
Heat Pump 18, 19
Heat Pump with
Auxiliary Heat
Heat Pump 20, 21
M19917
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
68-0280—01 6
NOTES:
1. When used in a single-transformer system, leave
metal jumper wire in place between Rc and R. If
used on a two-transformer system, remove metal
jumper wire between Rc and R.
2. Common wire is optional when thermostat is used
with batteries.
3. If thermostat is configured for a heat pump system
in the Installer Setup, configure changeover valve
for cool (O-factory setting) or heat (B).
4. L terminal is an input (system monitor) when the
System mode is in the Heat, Off, Cool or Auto
position. L terminal is a 24 Vac output when
System mode is Emergency Heat. Must connect
the 24 Vac Common when using the L terminal.
See LED Indication section for more details.
Fig. 9. Typical hookup of conventional single-stage heat
and cool system with single transformer
(1H/1C conventional).
Fig. 10. Typical hookup of conventional single-stage heat
and cool system with two transformers
(1H/1C conventional).
Table 2. Terminal Designation Descriptions.
Terminal
Designation Description
Rc (see Note
1)
Power for cooling--connect to
secondary side of cooling system
transformer
R (see Note 1) Power for heating--connect to
secondary side of heating system
transformer
C (see Note 2) Common wire from secondary side of
cooling system transformer
W Heat relay
Y Compressor contactor
GFan relay
Y2 Second stage cooling
W2 Second stage heat relay
O/B (see Note
3)
Changeover valve for heat pump
systems
AUX Auxiliary heat relay for heat pump
systems
E Emergency heat relay for heat pump
systems
L (see note 4) Equipment monitor for heat pump
systems
S1, S2 Optional outdoor or indoor remote
sensor
COMPRESSOR
CONTACTOR
M19895
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY
FAN
RELAY
R
C
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
1
1
3
2
3
OPTIONAL
24 VAC
COMMON
CONNECTION
Y2
RC
S1
R
S2
W
W2
Y
G
C
2
CONVENTIONAL
C
R
1
COMPRESSOR
CONTACTOR
M19896
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY
FAN
RELAY
R
C
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
REMOVE FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
1
1
3
2
3
OPTIONAL
24 VAC
COMMON
CONNECTION
Y2
RC
S1
R
S2
W
W2
Y
G
C
2
CONVENTIONAL
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
7 68-0280—01
Fig. 11. Typical hookup of heat-only system
(1 H conventional).
Fig. 12. Typical hookup of heat only system with fan
(1H conventional).
Fig. 13. Typical hookup of heat only power to open and
power to close zone valve (Series 20) system.
Fig. 14. Typical hookup of heat only system with normally
open zone valves.
M19897
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY
R
C
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
1
1
3
2
3
OPTIONAL
24 VAC
COMMON
CONNECTION
Y2
RC
S1
R
S2
W
W2
Y
G
C
2
CONVENTIONAL
M19898
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY
FAN
RELAY
R
C
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
1
1
3
2
3
OPTIONAL
24 VAC
COMMON
CONNECTION
Y2
RC
S1
R
S2
W
W2
Y
G
C
2
CONVENTIONAL
M19899
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
1
3
2
3
Y2
RC
S1
R
S2
W
W2
Y
G
C
2
CONVENTIONAL
R
TR
C
1
TR
W BR
SERIES 20
MOTOR OR
VALVE
M22422
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
R
C
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
CONFIGURE SYSTEM TYPE TO HEAT ONLY WITH NORMALLY OPEN
ZONE VALVES IN INSTALLER SETUP.
1
1
3
2
3
OPTIONAL
24 VAC
COMMON
CONNECTION
Y2
RC
S1
R
S2
W
W2
Y
G
C
2
CONVENTIONAL
NORMALLY OPEN
ZONE V
ALVE
4
4
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
68-0280—01 8
Fig. 15. Typical hookup of cool only system
(1C conventional).
Fig. 16. Typical hookup of conventional multistage
two-stage heating and two-stage cooling in a
single-transformer system
(2H/2C, 2H/1C or 1H/2C conventional).
Fig. 17. Typical hookup of conventional multistage
two-stage heating and two-stage cooling in a
two-transformer system (2H/2C, 2H/1C or
1H/2C conventional).
M19900
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
FAN
RELAY
R
C
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
1
1
3
2
3
OPTIONAL
24 VAC
COMMON
CONNECTION
Y2
RC
S1
R
S2
W
W2
Y
G
C
2
CONVENTIONAL
COMPRESSOR
CONTACTOR
M22438B
HEAT RELAY 2
COOL RELAY 2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
FAN
RELAY
R
C
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
1
1
3
2
3
OPTIONAL
24 VAC
COMMON
CONNECTION
MUST COME
FROM THE
COOLING
TRANSFORMER.
Y2
RC
S1
R
S2
W
W2
Y
G
C
2
CONVENTIONAL
COOL RELAY 1
HEAT RELAY 1
M19902B
HEAT RELAY 2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
FAN
RELAY
R
C
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
1
1
3
2
3
OPTIONAL
24 VAC
COMMON
CONNECTION
MUST COME
FROM THE
COOLING
TRANSFORMER.
Y2
RC
S1
R
S2
W
W2
Y
G
C
2
CONVENTIONAL
COOL RELAY 1
HEAT RELAY 1
R
C
COOL RELAY 2
1
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
9 68-0280—01
Fig. 18. Typical hookup of single-stage heat pump with no auxiliary/backup heat (1H/1C heat pump).
Fig. 19. Typical hookup of multistage heat pump with no auxiliary/backup heat (2H/2C heat pump).
R
C
G
C
EAT P
U
M
P
COMPRESSOR
RELAY
M19903B
CHANGEOVER
VALV E
FAN RELAY
R
C
1
1
2
3
4
4
OPTIONAL 24 VAC
MM
O
N
CO
NNE
C
TI
ON
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
R
C
EAT P
U
M
P
COMPRESSOR 1COMPRESSOR 2
M19904
CHANGEOVER
VALV E
FAN RELAY
R
C
1
1
2
3
4
5
5
OPTIONAL 24 VAC
MM
O
N
CO
NNE
C
TI
ON
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
MUST CONNECT THE 24 VAC COMMON WHEN USING L. THE TERMINAL IS SHOWN AS EQUIPMENT MONITOR, CAN ALSO BE USED AS A 24 VAC
OUTPUT. SEE "HEAT PUMP LED" SECTION FOR MORE INFORMATION.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
68-0280—01 10
Fig. 20. Typical hookup of single-stage heat pump with auxiliary/backup heat (2H/1C heat pump).
Fig. 21. Typical hookup of multistage heat pump with auxiliary/backup heat (3H/2C heat pump).
EAT P
U
M
P
COMPRESSOR
RELAY
M19905
CHANGEOVER
VALV E
FAN RELAY
HEAT 2 RELAY
(AUXILIARY HEAT)
R
C
1
1
2
3
4
5
6
4
OPTIONAL 24 VAC
MM
O
N
CO
NNE
C
TI
ON
EQUIPMENT
MONITOR
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
OUTDOOR SENSOR REQUIRED IN SYSTEM WITH FOSSIL FUEL BACKUP HEAT THAT IS NOT USING AN EXTERNAL FOSSIL FUEL KIT.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
MUST CONNECT THE 24 VAC COMMON WHEN USING L. THE TERMINAL IS SHOWN AS EQUIPMENT MONITOR, CAN ALSO BE USED AS
A 24 VAC OUTPUT. SEE "HEAT PUMP LED" SECTION FOR MORE INFORMATION.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE INSTALLER SETUP.
EMERGENCY
HEAT RELAY
3
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
EAT P
U
M
P
COMPRESSOR 2 COMPRESSOR 1
M19906
CHANGEOVER
VALV E
FAN RELAY
HEAT 2 RELAY
(AUXILIARY HEAT)
R
C
1
1
2
3
4
5
6
3
OPTIONAL 24 VAC
MM
O
N
CO
NNE
C
TI
ON
EQUIPMENT
MONITOR
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
OUTDOOR SENSOR REQUIRED IN SYSTEM WITH FOSSIL FUEL BACKUP HEAT THAT IS NOT USING AN EXTERNAL FOSSIL FUEL KIT.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
MUST CONNECT THE 24 VAC COMMON WHEN USING L. THE TERMINAL IS SHOWN AS EQUIPMENT MONITOR, CAN ALSO BE USED AS
A 24 VAC OUTPUT. SEE "HEAT PUMP LED" SECTION FOR MORE INFORMATION.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE INSTALLER SETUP.
EMERGENCY
HEAT RELAY
4
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
11 68-0280—01
POWER THE THERMOSTAT
You can choose from three methods to power the thermostat:
• Batteries only (AAA alkaline).
• 24 Vac common wire only.
• 24 Vac common wire with battery backup (AAA alkaline).
Wiring 24 Vac Common
• Single-Transformer System—Connect the common side of
the transformer to the C screw terminal of the thermostat
wallplate. Leave the metal jumper wire in place between
Rc and R.
• Two-Transformer System—Connect the common side of
the cooling transformer to the C screw terminal of the
thermostat wallplate. Remove the metal jumper wire
between Rc and R.
Installing Batteries
1. Install three AAA alkaline batteries on the back of the
thermostat as marked on the thermostat. See
Fig. 22.
Fig. 22. Installing batteries.
2. Locate and remove the tab labeled, Remove, in the
lower left corner on the thermostat back. See
Fig. 23.
Fig. 23. Remove tab labeled, Remove, on
thermostat back.
Mount Thermostat to Wallplate
1. Align the terminal screw blocks with the pins on the
back of the thermostat. Push the thermostat straight
onto the wallplate until it snaps into place. See Fig 24.
Fig. 24. Mount thermostat to wallplate.
M19918
BATTERIES (3)
REMOVE DURING
INSTALLATION
M19920
REMOVE
TAB
REMOVE DURING
INSTALLATION
M22213
PINS ON
BACK OF
THERMOSTAT
WALLPLATE
TERMINAL
SCREW
BLOCK
VisionPRO
TM
8000 Touchscreen Programmable Thermostat
68-0280—01 12
Locate and Mount C7089U Outdoor
Temperature Sensor (Optional)
Mount the sensor where (see Fig. 25):
• cannot tamper with settings.
• there is good air circulation.
• it can measure true outdoor ambient temperature.
• surface is flat.
• wire distance between C7089 and thermostat is less than
200 feet.
Do not mount the sensor:
• in direct sunlight.
• where hot or cold air blows on the sensor. Discharge line
from an outdoor compressor unit, vent or fan causes
inaccurate temperature readings.
• where snow, ice or debris can cover it.
Use the following steps to mount the sensor:
1. Remove the sensor from the mounting clip.
2. Mark the area on the location selected for mounting the
sensor mounting clip.
3. Mount the clip.
Fig. 25. Typical locations for C7089U Outdoor Sensor.
Wire C7089U Outdoor Sensor
CAUTION
Electrical Interference (Noise) Hazard.
Can cause erratic system operation.
Keep wiring at least one foot away from large inductive
loads such as motors, line starters, lighting ballasts
and large power distribution panels.
Use shielded cable to reduce interference when
rerouting is not possible.
IMPORTANT
Erratic temperature readings from a sensor can
occur as a result of any of the wiring practices
described below. Avoid these practices to assure
correct operation. Use shielded cable to reduce
interference if rerouting sensor wiring is not possible.
— Be sure wires have a cable separate from the
thermostat cable.
— Do not route temperature sensor wiring with building
power wiring, next to control contactors or near light
dimming circuits, electric motors or welding
equipment.
— Avoid poor wiring connections.
— Avoid intermittent or missing building earth ground.
CAUTION
Electrical Shock Hazard.
Can cause electrical shock or equipment damage.
Disconnect power supply before connecting wiring.
Wiring must comply with applicable codes, ordinances and
regulations:
1. Wire C7089 Outdoor Sensor to S1and S2 terminals on
the thermostat. If leadwire provided is not long enough
(60 in.), run a cable to a hole at C7089 location.
a. Using color-coded, 18-gauge thermostat wire is
recommended. For example of general wiring of
C7089, see Fig. 26.
b. Pigtail wiring can be used.
2. Mount C7089 in its mounting clip.
3. Plug wiring hole using nonhardening caulk or putty.
Fig. 26. Wire C7089 Outdoor Sensor to the thermostat.
M7514
1
2
2
1
USE APPROPRIATE MOUNTING MEANS FOR THE
TYPE OF STRUCTURE.
PLUG WIRING HOLE WITH NON-HARDENING CAULK
OR PUTTY.
C7089
WIRING HOLE
THROUGH
STRUCTURE
M19970
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