TB8220U
Commercial VisionPRO™
Programmable Thermostat
INSTALLATION INSTRUCTIONS
APPLICATION
The TB8220U Programmable Thermostat provides electronic control of 24 Vac heating and cooling systems.
See Table 1 for a description.
Table 1. TB8220U Thermostat Description.
Feature Description
Powering Methods • Battery only
System Types • Conventional (up to 2 Heat, 2 Cool stages)
Changeover Manual or automatic changeover (selectable)
System Setting Heat-Off-Cool-Auto
Fan Setting Auto-On
MERCURY NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash. Dispose of properly.
Contact your local waste management authority
for instructions regarding recycling and the
proper disposal of an old control.
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a
hazardous condition.
2. Check ratings given in instructions and on the
product to ensure the product is suitable for your
application.
• Direct connection to a 24 Vac transformer only
• Direct connection to a 24 Vac transformer with battery backup
• Heat Pump (up to 3 Heat, 2 Cool stages)
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Electrical Shock or Equipment Damage
Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
Select Thermostat Location
Select a location for the thermostat about 5 ft (1.5m)
above the floor in an area with good air circulation at
average temperature. See Fig. 1.
62-3070-03
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
4. Remove the wallplate from the wall and drill two
3/16 in. holes in the wall (if drywall) as marked. For
firmer material such as plaster, drill two 7/32 in.
holes. Tap the wall anchors (provided) into the
drilled holes until flush with the wall.
NO
YES
NO
NO
5 FEET
[1.5 METERS]
M22258
5. Pull the wires through the wire hole on the wallplate
and position the wallplate over the wall anchors.
6. Insert the mounting screws into the wall anchors
and tighten.
Fig. 1. Select 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.
MOUNTING
HOLES
MOUNTING
SCREWS (2)
Separate Wallplate from Thermostat
1. Separate the wallplate from the thermostat. See
Fig. 2.
WALLPLATE
WIRE HOLE
THERMOSTAT
M22267
Fig. 2. Separate wallplate from thermostat.
Install Wallplate (See Fig. 3)
Mount the thermostat horizontally on the wall:
1. Pull the wires through the wire hole on the wallplate.
2. Position the wallplate on the wall with the arrow
pointing up. Level the wallplate for appearance only.
3. Use a pencil to mark the mounting holes.
WIRING
IMPORTANT
— All wiring must agree with applicable codes,
ordinances and regulations.
— Use 18 gauge thermostat wire. Shielded cable is
not required.
NOTES:
— Sensor wires must have a cable separate
from the thermostat control cable.
— Refer to Table 2 for terminal designation
descriptions.
— See Fig. 7 through 17 for wiring diagrams for
specific equipment applications.
1. Select set of terminal identifications that correspond
to your system type (conventional or heat pump).
(See Fig. 4).
Y2
L
A
W1
S1
S2
Fig. 4. Terminal identifications for system type.
2. Loosen screw terminals used for the application.
WALL
WIRES THROUGH WALL
AND WIRE SLOT
WALL ANCHORS (2)
Fig. 3. Install wallplate.
HEAT PUMP
CONVENTIONAL
RC
Y2
R
L
W
A
Y
W2
G
S1
C
S2
SCREW
TERMINALS
RC
R
O/B
Y
G
C
M22780A
M19916
62-3070—03 2
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
3. Insert the wires into the terminal block and tighten
each screw terminal. See Fig. 5.
M19917
WIRE
WALLPLATE
Fig. 5. Insert wires into terminal block.
4. Push excess wire back into the wall opening and
restrict wires to the shaded area. See Fig. 6.
5. Plug the wall opening with nonflammable insulation
to prevent drafts from affecting the thermostat.
WALL OPENING
SHADED AREA
Fig. 6. Restrict wires to shaded area of wire hole.
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.
Y Compressor output.
C (see Note 2) Common wire from secondary side of cooling system transformer.
WHeat relay.
G Fan relay.
W2 Second stage heat relay.
Y2 Second stage cooling.
O/B (see Note 3) Changeover valve for heat pumps.
A (see Note 4) Economizer/Time-Of-Day (TOD) output—powered via R terminal.
S1 (See Note 5) Optional outdoor or indoor remote sensor.
S2 (See Note 5) Optional outdoor or indoor remote sensor.
L Powers red LED behind plastic in upper right corner of the thermostat.
W1 Auxiliary Heat Relay Output (Head Pump Mode 2H/1C, 3H/2C)
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. When using separate
transformers for heating and cooling, the
common must come from the cooling
transformer.
3. If thermostat is configured for a heat pump in
the Installer Setup, configure changeover
valve for cool (O-factory setting) or heat (B).
4. Reference economizer literature for wiring
details. When set for economizer operation,
the A terminal provides the occupancy signal.
(Power indicates occupied.)
5. Sensor wires must have a cable separate
from the thermostat control cable.
Terminal “A” Wiring Details for Economizers
— Wire the A terminal to the W7212 “N” terminal, or the
W7459 “TR” terminal.
— When using dual transformers at the thermostat, the
heating transformer must power the economizer.
— The A signal is powered from the R terminal and
energizes the economizer to signal occupied status
and drive the damper to the set minimum position.
Table 3. Wiring Diagrams.
Wallplate
System Type
Terminal
Identifications
Standard Heat/Cool Conventional 7, 8
Heat Only Conventional 9
Heat Only with Fan Conventional 10
Cool only Conventional 11
Standard Multistage
up to 2 Heat/2 Cool
Heat Pump
(No Auxiliary Heat)
Heat Pump
(with Auxiliary Heat)
Conventional 12, 13
Heat Pump 14, 15
Heat Pump 16, 17
Multiple T7770A Sensors — 18, 19, 20
Multiple C7189U Sensors — 21
M22266
Wiring
Diagram
Figure
3 62-3070—03
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Conventional System Wiring
Y2
Y2
RC
L
A
W2
S1
S2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
ECONOMIZER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
Fig. 7. Typical wiring of single transformer
Y2
L
A
W2
S1
S2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
ECONOMIZER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
REMOVE FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL. WHEN USED, THE COMMON MUST CONNECT
TO THE COOLING TRANSFORMER SECONDARY.
Fig. 8. Typical hookup of dual transformer
2
R
W
Y
G
C
FAN RELAY
COMPRESSOR CONTACTOR
HEAT RELAY
1H/1C system.
RC
2
2
R
W
Y
G
C
FAN RELAY
COMPRESSOR CONTACTOR
HEAT RELAY
1H/1C system.
24 VAC
3
24 VAC
3
24 VAC
1
L1
(HOT)
L2
M22781A
1
L1
(HOT)
L2
1
L1
(HOT)
L2
M22782A
OUTDOOR/INDOOR
Fig. 10. Typical hookup of heat-only system with fan.
L
A
W2
S1
S2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
OPTIONAL.
Fig. 9. Typical hookup of heat-only system.
Y2
L
A
W2
S1
S2
TEMPERATURE
SENSOR
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
Y2
L
A
W2
S1
S2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
ECONOMIZER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
Fig. 11. Typical hookup of cool-only system.
RC
2
2
R
W
Y
G
C
HEAT RELAY
ECONOMIZER
RC
2
R
W
Y
G
C
FAN RELAY
HEAT RELAY
ECONOMIZER
RC
2
R
W
Y
G
C
FAN RELAY
COMPRESSOR CONTACTOR
3
24 VAC
24 VAC
3
24 VAC
3
L1
(HOT)
L2
M22783A
1
L1
(HOT)
L2
M22784A
1
L1
(HOT)
L2
M22785A
1
62-3070—03 4
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Y2
RC
L
A
W2
S1
S2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY 2
ECONOMIZER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
Fig. 12. Typical hookup of single transformer
multistage system (up to 2H/2C).
2
R
W
Y
G
C
COOL RELAY 2
24 VAC
3
FAN RELAY
COOL RELAY 1
HEAT RELAY 1
Y2
1
L1
(HOT)
L2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY 2
ECONOMIZER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
2
REMOVE FACTORY INSTALLED JUMPER.
3
M22786A
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL. WHEN USED, THE COMMON MUST CONNECT
TO THE COOLING TRANSFORMER SECONDARY.
Fig. 13. Typical hookup of dual transformer multistage
RC
L
A
W2
S1
S2
2
R
W
Y
G
C
COOL RELAY 2
system (up to 2H/2C).
FAN RELAY
COOL RELAY 1
HEAT RELAY 1
3
24 VAC
24 VAC
1
L1
(HOT)
L2
1
L1
(HOT)
L2
M22787A
5 62-3070—03
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Heat Pump System Wiring
L1
(HOT)
Y2
L
A
W1
S1
S2
OUTDOOR/INDOOR
TEMPERATURE
5
SENSOR
ECONOMIZER
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
1
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
3
IS OPTIONAL.
4
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"
IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR.
5
AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A
CABLE SEPARATE FROM THE THERMOSTAT CABLE.
Fig. 14. Typical hookup of single-stage heat pump
OUTDOOR/INDOOR
5
ECONOMIZER
1
2
3
4
5
Fig. 15. Typical hookup of multistage heat pump with
with no auxiliary heat (1H/1C).
Y2
L
A
W1
S1
S2
TEMPERATURE
SENSOR
COMPRESSOR 2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
"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.
no auxiliary heat (2H/2C).
2
COMPRESSOR CONTACTOR
CHANGEOVER VALVE
2
CHANGEOVER VALVE
24 VAC
RC
R
O/B
4
Y
G
C
3
FAN RELAY
24 VAC
RC
R
O/B
4
Y
G
C
3
FAN RELAY
COMPRESSOR 1
L2
1
M22788A
L1
(HOT)
L2
1
M22789A
Y2
L
A
W1
S1
S2
OUTDOOR/INDOOR
TEMPERATURE
5
SENSOR
AUXILIARY HEAT RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
1
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
3
IS OPTIONAL.
4
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"
IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR.
5
AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A
CABLE SEPARATE FROM THE THERMOSTAT CABLE.
Fig. 16. Typical hookup of single-stage heat pump
OUTDOOR/INDOOR
TEMPERATURE
5
AUXILIARY HEAT RELAY
1
2
3
4
5
Fig. 17. Typical hookup of multistage heat pump
with auxiliary heat (2H/1C).
Y2
L
A
W1
S1
S2
SENSOR
ECONOMIZER
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
"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.
with auxiliary heat (3H/2C).
2
COMPRESSOR CONTACTOR
CHANGEOVER VALVE
ECONOMIZER
2
COMPRESSOR 1
CHANGEOVER VALVE
COMPRESSOR 2
RC
R
O/B
Y
G
C
FAN RELAY
RC
R
O/B
Y
G
C
FAN RELAY
24 VAC
4
3
M22790A
24 VAC
4
3
M22791A
1
1
L1
(HOT)
L2
L1
(HOT)
L2
62-3070—03 6
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Sensor Wiring for Temperature Averaging
SUBBASE
S1 S2
T7770A
TT
T7770A
TT
T7770A
TT
T7770A
TT
S1 S2
T7770A1006
TT
T7770A1006
TT
SUBBASE
T4 T3
1
T7770A3002
M22831
Fig. 18. Wiring four T7770A1006 (20K ohm) Sensors.
SUBBASE
S1 S2
T4 T3
T7770A3002
THE T7770A3002 IS A 10K OHM SENSOR.
1
Fig. 19. Wiring two T7770A3002 (10K ohm) Sensors to
provide a temperature averaging network.
T4 T3
11
T7770A3002
M22933
1
THE T7770A3002 IS A 10K OHM SENSOR.
Fig. 20. Wiring two T7770A1006 (20K ohm) Sensors
and one T7770A3002 (10K ohm) sensor to provide a
temperature averaging network
Y2
W2
1
S1
S2
WIRES MUST HAVE A CABLE SEPARATE FROM
1
THE THERMOSTAT CABLE.
Fig. 21. Wiring four C7189U (10K ohm) Sensors to
provide a temperature averaging network.
C7189
C7189 C7189
M22934
C7189
M22935
7 62-3070—03
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
MON
WED
THU
FRISSAA
MON
WED
THU
FRISSAA
POWER THE THERMOSTAT
You can choose from three methods to power the
thermostat:
• Batteries only (AAA alkaline).
• 24 Vac direct connection only.
• 24 Vac direct connection 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. See Fig. 22.
BATTERIES (3)
Fig. 22. Installing batteries.
2. Locate and remove the tab labeled Remove. See
Fig. 23.
M19918
IMPORTANT
This tab must be removed in order to set the
real-time clock.
REMOVE
TAB
INSTALLATION
REMOVE DURING
INSTALLATION
REMOVE DURING
M19920
Fig. 23. Remove tab labeled REMOVE from
thermostat back.
Setting Calendar and Time
Setting Calendar
This thermostat is designed to, under normal use,
automatically keep current time and day in memory for up
to ten years once the calendar is set. There are two ways
to set the calendar for this thermostat:
SETTING CALENDAR WHEN THERMOSTAT IS FIRST POWERED
When the thermostat is first powered, the display is ready
to set the calendar and time. The thermostat proceeds
through a sequence of setup screens. See Fig. 24.
SETTING CALENDAR AFTER THERMOSTAT IS ALREADY
FUNCTIONING
See steps 1 through 4, in the Advanced Settings section,
to set year, month and day.
SET CURRENT DAY
SET MONTH
TUE WED
THU
FRI
MON
OK TO PICK MULTIPLE DAYS SCREEN LOCKED
CHANGE FILTER UV LAMP HUMIDIFIER PAD
DONE
SUN
USE ARROWS TO SET YEAR AND TIME
Fig. 24. Setting calendar and time after initial powerup.
Mount Thermostat to Wallplate
1. Align the terminal screw blocks with the pins on the
back of the thermostat.
2. Push the thermostat straight onto the wallplate until
62-3070—03 8
WED
THU
FRI
PM
MON
OK TO PICK MULTIPLE DAYS SCREEN LOCKED
CHANGE FILTER UV LAMP HUMIDIFIER PAD
DONE
it snaps into place. See Fig. 25.
SUN
M22761
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
E
MO
USASU
SYSTE
OFF
g
Schedule
de
Se
o
WALL
INSTALLATION
REMOVE DURING
Fig. 25. Mount thermostat to wallplate.
The thermostat has advanced settings to match the HVAC
system. These settings can be adjusted to match specific
needs. Access to these settings is obtained as follows:
1. From the main screen, press SYSTEM. Five blank
touch keys show on the bottom of the screen
between DONE and CANCEL.
2. Press and hold the two blank keys on either side of
the center blank key for approximately five seconds.
(See Fig. 26.)
3. The Setup Number displays to the lower-left area of
the screen. It is a four-digit code beginning with
zero. The current setting is displayed to the right.
NOTE: To cycle through the Setup Numbers, press the
up or down arrow.
M19919
INSTALLER SETUP NUMBERS, SETTINGS, AND TESTS (TABLE 4)
Installer System Tests
Use the Installer System Test to test the heating, cooling
and fan. Refer to the latter portion of Table 4.
T
Advanced Settings
Insi
DON
t T
Followin
CANC
CAUTION
Equipment Damage Hazard.
Minimum compressor off time is bypassed
during Installer System Test
Avoid cycling compressor quickly.
IMPORTANT
Use Installer System Test to test heating, cooling
and fan. The setting chosen for System Type
(Installer Setup Number 0170) can prevent some
System Test Numbers from appearing.
M19923
Fig. 26. Entering Installer Setup.
Table 4. Installer Setup Menu.
Installer
Setup
Number
0120 Date (Year Upper) 20 20—20xx
Installer Setup
Name
Default
Setting All Settings Notes
21—21xx
Available year range: 2001 - 2178
0130 Date (Year Lower) 04 00-99 Available year range: 2001 - 2178
0140 Date (Month) 6 1-12
0150 Date (Day) 15 1-31 (Month Dependent)
0160 Schedule Options 4 0—Non-Programmable
4—Programmable
9 62-3070—03
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Table 4. Installer Setup Menu. (Continued)
Installer
Setup
Number
0170 System Selection 8 1—1H/1C Conv
0175 TOD/Economizer
0180 Heat Fan Operation 0 0—Fossil
0185 Pre-occupancy
0190 Reversing Valve
0220 Cycles Per Hour
0230 CPH for second
0240 CPH for first stage
0250 CPH for second
0260 CPH for third Stage
0270 CPH for Auxiliary
0280 Continuous
0300 Changeover 1 0—Manual
0310 Deadband 3°F
0320 Temperature
0330 Daylight Saving 2 0—Disabled
Installer Setup
Name
output (terminal A)
Purge Duration
O/B
(CPH) for first stage
compressor
stage compressor
conventional heat
stage conventional
heat
Heat
Heat
Backlight
Indication Scale
Default
Setting All Settings Notes
2—1H/1C HP
3—1H w/o fan
4—1H with fan
6—1C
7—2H/1C HP (Aux. Heat)
8—2H/2C Conv
9—2H/1C Conv
10—1H/2C Conv
11—2H/2C HP
12—3H/2C HP (Aux.
Heat)
0 0—Unused
1—TOD
2—Economizer
1—Electric
0 0—no duration
1—one hour
2—two hours
3—three hours
0 0—O (O/B On Cool)
1—B (O/B On Heat)
3 1-6 Only shown for system with cool stages. Selection
To use the Emergency Heat button, select setting
#7 or #12. See Fig. 16 or 17 for auxiliary heat
wiring.
Economizer energizes A during a call for cool.
TOD energizes A during Occupied period, and deenergizes A during Unoccupied.
Only shown for conventional system with heat
stages and fan capability selected. If heat pump is
selected, fan defaults to electric.
Shown only if system has fan and schedule
programmable.
Pre-occupancy purge enabled by nonzero duration
(and sends economizer to minimum position).
Only shown with heat pump system selected.
in this stage changes default CPH of second stage
cool.
3 1-6 Only shown if two stages of cool selected.
5 1-12 Only shown if system is conventional with heat
9 1-12 Only shown with at least two stages conventional
stages.
Selection in this stage changes default CPH of
second stage heat.
heat or 2H/1C heat pump selected.
9 1-12 Only shown if 3H/2C heat pump is selected.
9 1-12 Only shown if multi-stage heat pump is selected
0 0—No
1—Yes
1—Auto
2 (1.5)—2°F (1.5°C)
(2°C)
3 (2.0)—3°F (2.0°C)
4 (2.5)—4°F (2.5°C)
5 (3.0)—5°F (3.0°C)
6 (3.5)—6°F (3.5°C)
7 (4.0)—7°F (4.0°C)
8 (4.5)—8°F (4.5°C)
9 (5.0)—9°F (5.0°C)
0 0—°F
1—°C
1—Enabled (US 1987)
2—Enable (US 2007)
3—Enabled (Europe)
(heat pump with more heat than cool stages).
Always shown. If AC power not present the option
is overridden and normal backlight operation
occurs.
Only shown if system has both heat and cool
stages.
Only shown if Automatic Changeover Selected
62-3070—03 10
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Table 4. Installer Setup Menu. (Continued)
Installer
Setup
Number
0340 Remote
0350 Heat Pump
0360 Heat Pump
0535 Temporary
0540 Number of Periods 4 2—2 Periods
0580 Minimum
0600 Heat Temperature
0610 Cool Temperature
0640 Clock Format 12 12—12 Hour
0650 Extended Fan-on
0660 Extended Fan-on
0670 Keypad Lockout 0 0—Unlocked
0680 Temperature
0685 Recovery Heat
Installer Setup
Name
Temperature
Sensor
Compressor
Lockout
Auxiliary Lockout
Occupied Duration
Limit
Compressor Off
Time
Range Stops
Range Stops
time Heat
time Cool
Control Heat
Ramp Rate
Default
Setting All Settings Notes
0 0—None
1—Outdoor for Display
2—Outdoor for Control
3—Remote 10K Indoor
4—Remote 20K Indoor
0 0—None
15(-9.5)—15°F (-9.5°C)
20(-6.5)—20°F (-6.5°C)
25(-4.0)—25°F (-4.0°C)
30(-1.0)—30°F (-1.0°C)
35(1.5)—35°F (1.5°C)
40(4.5)—40°F (4.5°C)
45(7.0)—45°F (7.0°C)
0 0—None
40(4.5)—40°F (4.5°C)
45(7.0)—45°F (7.0°C)
50(10.0)—50°F (10.0°C)
55(13.0)—55°F (13.0°C)
60(15.5)—60°F (15.5°C)
3 0—no duration
1—one hour
2—two hours
3—three hours
4—four hours
4—4 Periods
50—Off
2—2 minutes
3—3 minutes
4—4 minutes
5—5 minutes
90 40 to 90°F (4 to 32°C) Only shown if system has heat stages.
50 50 to 99°F (10 to 37°C) Only shown if system has cool stages.
24—24 Hour
00—Off
90—90 seconds
00—Off
40—40 seconds
1—Partial Lockout 1
2—Partial Lockout 2
3—Fully Locked
2 1—Less Aggressive
2—Standard
3—More Aggressive
5 0-20°F/hour Only shown if system has heat stages.
Averaging would not include on-board sensor. It is
accomplished by series/parallel combinations.
2 applies only to Heat Pump applications (allowing
compressor lockout while displaying temperature).
Only shown for heat pump systems with more heat
stages than cool selected and remote sensor
selection is outdoor for control.
Must enforce a dead band between this and
Auxiliary Lockout
Only shown for heat pump systems with more heat
stages than cool selected and remote sensor
selection is outdoor for control.
Must enforce a dead band between this and Heat
Pump Compressor Lockout.
0 means no limit
Does not appear if Non-programmable is chosen.
Applies to all days of the week. With 2 selected the
“Cancel Period” option does not appear on the
display.
Only shown if system has cool stages.
Not displayed with fan set to fossil or with cool-only
systems
Only shown if system has cool stages.
Unlocked: All functions accessible.
Partial 1: Locks all but Holiday, Override, and Up/
Down.
Partial 2: Locks all but Holiday and Override.
Full: Entire interface locked/non-functional.
Only shown if system has heat stages.
Only integral gains affected. Affects control
operation in all control regimes (not just recovery
or setpoint change).
More Aggressive stops signal prior to reaching the
setpoint. (For use with oversized equipment.)
0 disables ramped recovery (step setpoint change
at period start time).
11 62-3070—03
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Table 4. Installer Setup Menu. (Continued)
Installer
Setup
Number
0690 Temperature
0695 Recovery Cool
0700 Temperature
0710 Restore Factory
Test 1 Installer Test
Test 2 Installer Test
Test 3 Installer Test
Test 4 Installer Test
Test 8 Installer Test
NOTE: Press the Done button to exit the Installer System Test.
Installer Setup
Name
Control Cool
Ramp Rate
Display Offset
Defaults
INSTALLER TESTS
Cool
Fan
Heat
Auxiliary Heat
TOD/Economizer
Default
Setting All Settings Notes
2 1—Less Aggressive
2—Standard
3—More Aggressive
3 0-20°F/hour Only shown if system has cool stages.
0 -3 (-1.5)— -3°F (-1.5°C)
-2 (-1.0)— -2°F (-1.0°C)
-1 (-0.5)— -1°F (-0.5°C)
0 (0.0)—0°F (0.0°C)
1 (0.5)—1°F (0.5°C)
2 (1.0)— 2°F (1.0°C)
3 (1.5)—3°F (1.5°C)
0 0—No
1—Yes
00—Off
1—Cool Stage 1
2—Cool Stage 2
00—Off
1—Fan On
00—Off
1—Heat Stage 1
2—Heat Stage 1 and 2
3—Heat Stage 1,2 and 3
0 0—Auxiliary Heat Off
1—Auxiliary Heat On
0 0—TOD/Economizer Off
1—TOD/Economizer On
Only shown if system has cool stages.
Only integral gains affected. Affects control
operation in all control regimes (not just recovery
or setpoint change).
More Aggressive stops signal prior to reaching the
setpoint. (For use with oversized equipment.)
0 disables ramped recovery (step setpoint change
at period start time).
This offset applies to both the control temperature
and to the display temperature for indoor sensor
(and remote indoor sensor).
Resets all ISU parameters to default values and
resets the schedule to default Energy Star. Retains
only calendar settings and time.
OPERATION
System Settings
Heat—Thermostat controls the heating system.
Off—Both heating and cooling systems are off.
Cool—Thermostat controls the cooling system.
Auto—Thermostat automatically changes between heat
and cool operation, depending on indoor temperature.
Fan Settings
Auto —Fan runs only when heating/cooling system is on.
On—Fan runs continuously.
Table 5 shows default program settings. See Owner’s
Guide for complete instructions to change the program.
Minimum-Off Timer Compressor Protection
The thermostat has an adjustable Minimum-Off Timer that
can be set from zero to five minutes (Factory Setting—five
minutes). The Minimum-Off Timer can be bypassed
through the Installer System Test or it can be bypassed
permanently by setting the Minimum-Off Timer to 0
62-3070—03 12
aThe thermostat default setting is two period only. To use
minutes in the Installer Setup. The Minimum-Off Timer is
activated after the compressor turns off:
— If the thermostat is system powered (common wire),
— If there is a call for cooling or heating during the
Table 5. Energy Star Default Program Settings.
(21°C)
(10°C)
Setpoints
78°F
(25.5°C)
85°F
(29.5°C)
SettingHeat Cool
Auto
Auto
Fan
Schedule
Period Time
Occ1 8:00am 70°F
Unocc1 10:00pm 55°F
a
Occ2
Unocc2
four periods, change the appropriate setup parameter.
the Minimum-Off Timer is also activated upon initial
startup and after power interruptions.
Minimum-Off Time, the thermostat displays “Wait.”
————
a
————
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
— When the Minimum Off Timer expires, “Cool On” or
“Heat On” (heat pumps only)” appears solidly in the
display and the compressor and fan turn on.
Outdoor or Indoor Temperature Sensor
Allow outdoor or indoor temperature sensor to absorb the
air for a minimum of five minutes before taking a reading.
See the Sensor instructions for more information.
Economizer/TOD Logic (Table 6)
Table 6. Operation of Terminal A.
Effective
Occupancy
Call for
Cool
Terminal A
Economizer TOD
Occupied — Energized Energized
Unoccupied Yes Energized De-energized
No De-energized De-energized
Override — Energized Energized
Heat Pump Temperature Lockouts
Dual Fuel Heat Pump and Outdoor Sensor
In this operation, there is no external fossil fuel kit (dual
fuel kit) installed; the thermostat controls this function:
1. Choose correct heat pump application in Installer
Setup Number 0170.
2. Choose Outdoor Temperature Sensor for Heat
Pump Temperature Lockouts Option in Installer
Setup Number 0340.
3. Choose appropriate Balance Point Temperature
in Installer Setup Number 0350.
OPERATION IN HEAT MODE ABOVE BALANCE POINT
(OUTDOOR TEMPERATURE)
When the outdoor temperature is above the selected
Balance Point Temperature (ISU 0350), only the
compressor operates and the fan (G terminal) energizes
when the thermostat calls for heat.
OPERATION IN HEAT MODE BELOW BALANCE POINT
(OUTDOOR TEMPERATURE)
When the outdoor temperature is below the selected
Balance Point Temperature (ISU 0350), only the Fossil
Fuel (auxiliary heat) operates and the fan (G terminal)
does not energize when the thermostat calls for heat.
Heat Pump with Auxiliary (Backup) Heat and
Outdoor Temperature Sensor
1. Choose correct heat pump application in Installer
Setup Number 0170.
2. Choose Outdoor Temperature Sensor for
Control Option in Installer Setup Number 0340.
3. Choose Compressor Lockout Temperature in
Installer Setup Number 0350.
4. Choose Auxiliary Lockout Temperature in
Installer Setup Number 0360.
NOTE: There is a 5°F deadband between Compressor
and Auxiliary Heat lockout temperatures.
Operation in Heat Mode
When the outdoor temperature is:
— Below the Compressor Lockout Temperature, only the
Auxiliary Heat operates.
— Above the Auxiliary Lockout Temperature, only the
Compressor operates. See Fig. 31.
— Between the two temperatures, both the Compressor
and Auxiliary Heat operate.
COMPRESSOR ONLY
50
BOTH COMPRESSOR AND
35
OUTDOOR TEMPERATURE
Fig. 27. Heat Pump Operation with Lockout
AUXILIARY HEAT
AUXILIARY ONLY
Temperatures Set.
AUXILIARY
LOCKOUT
TEMPERATURE
COMPRESSOR
LOCKOUT
TEMPERATURE
M19950
13 62-3070—03
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
TROUBLESHOOTING (TABLE 7)
Table 7. Troubleshooting.
Symptom Possible Cause Action
Display does not come on. Thermostat is not being powered. Check for 24 Vac between C and Rc.
Temperature settings do not
change.
Heating or cooling does not
come on.
Thermostat is calling for Heat
(Heat on) or Cool (Cool on) but
no heating or cooling is
running.
Heat does not turn on (Heat
On is solid in the display).
Heat pump puts out cool air in
the heat mode and warm air in
the cool mode.
Both the heating and cooling
equipment are running at the
same time.
Cooling does not turn on (Cool
On is solid in the display).
The upper or lower temperature limits
were reached.
The keypad is fully locked. Check Installer Setup Number 0670 to
Thermostat minimum off-time is
activated.
System selection not set to Heat or
Cool.
System type Selection is incorrect. Check Installer Setup Number 0170 and
Heating or cooling equipment is not
operating.
Heating equipment failure. Check for 24 Vac at the equipment on the
Loose or broken wire connection
between thermostat and heating
equipment.
Changeover Valve (Installer Setup
Number 0190) is not configured to
match the changeover required by the
installed heat pump.
The heating equipment is not a heat
pump but the System Type (Installer
Setup Number 0170) is set to Heat
Pump.
Heating and cooling wires are shorted
together.
Cooling equipment failure. Check for 24 Vac at the equipment on the
Loose or broken wire connection
between thermostat and cooling
equipment.
Check that AAA batteries are installed
correctly and are good.
Check temperature setpoints.
Check Installer Setup Numbers 0600 and
0610; modify as needed.
change keypad locked options.
Wait up to five minutes for the system to
respond.
Set system Selection to correct position.
make sure correct System type is chosen.
Check wiring.
Check Installer Setup Number 0170 and
make sure correct system type is chosen.
Verify operation of equipment in System Test
mode.
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
(W) and transformer common. If 24 Vac is
present, the thermostat is functional. Check
the heating equipment to find the cause of
the problem.
Check for 24 Vac between the heat terminal
(W) and transformer common. If voltage is
not present, check wire connection (loose or
broken) between the thermostat and the
heating equipment.
Set Changeover Valve (Installer Setup
Number 0190) to match the changeover
required by the installed heat pump.
Set System Type (Installer Setup Number
0170) to match the installed heating and/or
cooling equipment.
Separate the shorted heating and cooling
wires.
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
(Y) and transformer common. If 24 Vac is
present, the thermostat is functional. Check
the cooling equipment to find the cause of
the problem.
Check for 24 Vac between the cool terminal
(Y) and transformer common. If voltage is not
present, check the wire connection (loose or
broken) between the thermostat and the
cooling equipment.
62-3070—03 14
Symptom Possible Cause Action
Fan does not turn on in a call
for heat (electric furnace).
Heating equipment is running
in the cool mode.
Heating equipment does not
turn off and heat temperature
setting is set below room
temperature (Heat On is not in
the display).
Cannot set the system setting
to Heat.
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Table 7. Troubleshooting. (Continued)
Fan Control in Heating is set to Gas or
Oil Furnace (Setting 0180).
Heating equipment is not a heat pump
but System Type (Installer Setup
Number 0170) is set to Heat Pump.
Heating equipment is not a heat pump
but System Type (Installer Setup
Number 0170) is set to Heat Pump.
System Type (Installer Setup Number
0170) is set to Cool Only.
Set Fan Control in Heating to Electric
Furnace (Setting 0180).
Set System Type (Installer Setup Number
0170) to match the installed heating and/or
cooling equipment.
Set System Type (Installer Setup Number
0170) to match the installed heating and/or
cooling equipment.
Set System Type (Installer Setup Number
0170) to match the installed heating and/or
cooling equipment.
Cannot set the system setting
to Cool.
Heat On is not in the display. System setting is not set to Heat and/or
Cool On is not in the display. System setting is not set to Cool and/or
Wait is in the display. Compressor minimum off timer is
System Type (Installer Setup Number
0170) is set to Heat Only or Heat Only
with Fan.
temperature setting is not set above
room temperature.
the temperature setting is not set below
room temperature.
active.
Set System Type (Installer Setup Number
0170) to match the installed heating and/or
cooling equipment.
Set the system setting to Heat and set the
temperature setting above the room
temperature.
Set the system setting to Cool and set the
temperature setting below the room
temperature.
Wait up to five minutes for the cooling or
heating (heat pump) equipment to turn on.
15 62-3070—03
TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
SPECIFICATIONS
Electrical Ratings:
Ter mina l
W (Heating) 20 - 30 Vac 0.02 - 1.0A
Y (Cooling) 20 - 30 Vac 0.02 - 1.0A
G (Fan) 20 - 30 Vac 0.02 - 0.60A
A (Economizer/TOD) 20 - 30 Vac 0.02 - 1.0A
Temperature Setting Range:
Heating: 40°F to 90°F (4.5°C to 32°C).
Cooling: 50°F to 99°F (10°C to 37°C).
Operating Ambient Temperature:
0°F to 120°F (-18°C to 49°C).
Shipping Temperature:
-30°F to 150°F (-34.4°C to 65.6°C).
Operating Relative Humidity (Non-condensing):
5% to 90%.
Voltage
(50/60 Hz)
Running
Current
Thermostat Dimensions: 3-3/4 in. (95 mm) high x 6 in.
(152 mm) wide x 1-3/8in. (35 mm) deep.
Accessories:
C7089U Outdoor Sensor: 10K ohm NTC.
C7189U Remote Indoor Sensor: 10K ohm NTC.
C7772 Flush-Mount Remote Indoor Sensor:
20K ohm NTC.
T7770A1006 Wall-Mount Remote Indoor Sensor:
20K ohm NTC.
T7770A3002 Wall-Mount Remote Indoor Sensor:
10K ohm NTC.
Perchlorate Material
This thermostat contains a Lithium battery which may
contain Perchlorate material.
The following statement is required:
Perchlorate Material—special handling may apply.
See www.dtsc.ca.gov/hazardouswaste/perchlorate
Automation and Control Solutions
Honeywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9
customer.honeywell.com
® U.S. Registered Trademark
© 2008 Honeywell International Inc.
62-3070—03 M.S. Rev. 01-08
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