Honeywell Thermostat Tb8220U Users Manual 62 0370 03 Commercial VisionPRO Programmable

TB8220U to the manual 633358c5-4a83-4966-bfb6-3c841a68446f

2015-01-23

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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
• Direct connection to a 24 Vac transformer only
• Direct connection to a 24 Vac transformer with battery backup

System Types

• Conventional (up to 2 Heat, 2 Cool stages)
• Heat Pump (up to 3 Heat, 2 Cool stages)

Changeover

Manual or automatic changeover (selectable)

System Setting

Heat-Off-Cool-Auto

Fan Setting

Auto-On
3.

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.
2.

Read these instructions carefully. Failure to follow
them could damage the product or cause a
hazardous condition.
Check ratings given in instructions and on the
product to ensure the product is suitable for your
application.

Installer must be a trained, experienced service
technician.
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

YES

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.
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.

NO
5 FEET
[1.5 METERS]

WALL
WIRES THROUGH WALL
AND WIRE SLOT
WALL ANCHORS (2)

M22258

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)
M19916

Separate Wallplate from Thermostat
1.

Separate the wallplate from the thermostat. See
Fig. 2.

Fig. 3. Install wallplate.

WIRING

WALLPLATE
WIRE HOLE

IMPORTANT
— All wiring must agree with applicable codes,
ordinances and regulations.
— Use 18 gauge thermostat wire. Shielded cable is
not required.
NOTES:
—
—

THERMOSTAT

—

M22267

Fig. 2. Separate wallplate from thermostat.

Install Wallplate (See Fig. 3)

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).

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.

HEAT PUMP
CONVENTIONAL

Y2
L
A
W1
S1
S2

Y2
L
A
W2
S1
S2

RC
R
W
Y
G
C

SCREW
TERMINALS

RC
R
O/B
Y
G
C

M22780A

Fig. 4. Terminal identifications for system type.
2. Loosen screw terminals used for the application.

62-3070—03

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
3.

Insert the wires into the terminal block and tighten
each screw terminal. See Fig. 5.

WIRE

WALLPLATE

M19917

Fig. 5. Insert wires into terminal block.
4.
5.

WALL OPENING

Push excess wire back into the wall opening and
restrict wires to the shaded area. See Fig. 6.
Plug the wall opening with nonflammable insulation
to prevent drafts from affecting the thermostat.

SHADED AREA

M22266

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.

Compressor output.

C (see Note 2)

Common wire from secondary side of cooling system transformer.

Heat relay.

Fan relay.

Second stage heat relay.

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.

Powers red LED behind plastic in upper right corner of the thermostat.

Auxiliary Heat Relay Output (Head Pump Mode 2H/1C, 3H/2C)

NOTES:
1.

3.
4.

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.
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.
If thermostat is configured for a heat pump in
the Installer Setup, configure changeover
valve for cool (O-factory setting) or heat (B).
Reference economizer literature for wiring
details. When set for economizer operation,
the A terminal provides the occupancy signal.
(Power indicates occupied.)
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.

System Type

Wallplate
Terminal
Identifications

Wiring
Diagram
Figure

Standard Heat/Cool

Conventional

Heat Only

Conventional

Heat Only with Fan

Conventional

Cool only

Conventional

Standard Multistage
up to 2 Heat/2 Cool

Conventional

12, 13

Heat Pump
(No Auxiliary Heat)

Heat Pump

14, 15

Heat Pump
(with Auxiliary Heat)

Heat Pump

16, 17

Multiple T7770A Sensors

—

18, 19, 20

Multiple C7189U Sensors

—

7, 8

62-3070—03

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT

Conventional System Wiring
Y2
L
A
W2
S1
S2

RC
R
W
Y
G
C

Y2
L
A
W2
S1
S2

L1
(HOT)
24 VAC
L2

HEAT RELAY

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.

FACTORY INSTALLED JUMPER.

WHEN USING BATTERIES, THE 24V COMMON CONNECTION
M22781A
IS OPTIONAL.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.

FACTORY INSTALLED JUMPER.

WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
OPTIONAL.
M22783A

Fig. 9. Typical hookup of heat-only system.
Y2
L
A
W2
S1
S2

Fig. 7. Typical wiring of single transformer
1H/1C system.

RC
R
W
Y
G
C

L1
(HOT)
24 VAC
L2

L1
(HOT)

24 VAC
L2

ECONOMIZER

HEAT RELAY

COMPRESSOR CONTACTOR

RC
R
W
Y
G
C

FAN RELAY
OUTDOOR/INDOOR
TEMPERATURE
SENSOR

FAN RELAY
1

COMPRESSOR CONTACTOR
HEAT RELAY

ECONOMIZER

OUTDOOR/INDOOR
TEMPERATURE
SENSOR

24 VAC

OUTDOOR/INDOOR
TEMPERATURE
SENSOR

FAN RELAY

Y2
L
A
W2
S1
S2

1
L1
(HOT)

OUTDOOR/INDOOR
TEMPERATURE
SENSOR

RC
R
W
Y
G
C

L1
(HOT)

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.

FACTORY INSTALLED JUMPER.

WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.

24 VAC
L2

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.

REMOVE FACTORY INSTALLED JUMPER.

WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL. WHEN USED, THE COMMON MUST CONNECT
TO THE COOLING TRANSFORMER SECONDARY.

HEAT RELAY
ECONOMIZER

M22784A

Fig. 10. Typical hookup of heat-only system with fan.

Y2
L
A
W2
S1
S2

M22782A

Fig. 8. Typical hookup of dual transformer
1H/1C system.

RC
R
W
Y
G
C

L1
(HOT)
24 VAC
L2

3
OUTDOOR/INDOOR
TEMPERATURE
SENSOR

FAN RELAY
COMPRESSOR CONTACTOR

ECONOMIZER
1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.

FACTORY INSTALLED JUMPER.

WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
M22785A

Fig. 11. Typical hookup of cool-only system.

62-3070—03

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT

Y2
L
A
W2
S1
S2

RC
R
W
Y
G
C

Y2
L
A
W2
S1
S2

1
L1
(HOT)
24 VAC
L2

RC
R
W
Y
G
C

1
L1
(HOT)
24 VAC
L2

3
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY 2

3
OUTDOOR/INDOOR
TEMPERATURE
SENSOR

FAN RELAY
COOL RELAY 2

ECONOMIZER

COOL RELAY 1

HEAT RELAY 2
HEAT RELAY 1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.

FACTORY INSTALLED JUMPER.

WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.

ECONOMIZER

FAN RELAY
COOL RELAY 2

COOL RELAY 1

HEAT RELAY 1

L1
(HOT)

24 VAC
L2

M22786A

Fig. 12. Typical hookup of single transformer
multistage system (up to 2H/2C).

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.

REMOVE FACTORY INSTALLED JUMPER.

WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL. WHEN USED, THE COMMON MUST CONNECT
TO THE COOLING TRANSFORMER SECONDARY.

M22787A

Fig. 13. Typical hookup of dual transformer multistage
system (up to 2H/2C).

62-3070—03

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT

Heat Pump System Wiring
L1
(HOT)
Y2

OUTDOOR/INDOOR
TEMPERATURE
SENSOR

ECONOMIZER

O/B 4
Y

Y2
L2

L1
(HOT)

24 VAC

OUTDOOR/INDOOR
TEMPERATURE
SENSOR

COMPRESSOR CONTACTOR

O/B 4
Y

FAN RELAY

24 VAC

3
FAN RELAY

COMPRESSOR CONTACTOR
CHANGEOVER VALVE

CHANGEOVER VALVE

AUXILIARY HEAT RELAY

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.

M22788A

Fig. 14. Typical hookup of single-stage heat pump
with no auxiliary heat (1H/1C).

M22790A

Fig. 16. Typical hookup of single-stage heat pump
with auxiliary heat (2H/1C).

L1
(HOT)
Y2

OUTDOOR/INDOOR
TEMPERATURE
SENSOR

3
FAN RELAY

COMPRESSOR 2

OUTDOOR/INDOOR
TEMPERATURE
SENSOR

AUXILIARY HEAT RELAY

COMPRESSOR 1

L2
1

O/B 4
Y

5
CHANGEOVER VALVE

24 VAC

RC
R

A
W1

ECONOMIZER

O/B 4
Y

L1
(HOT)

24 VAC

ECONOMIZER

3
FAN RELAY

COMPRESSOR 1
CHANGEOVER VALVE
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.

M22789A

Fig. 15. Typical hookup of multistage heat pump with
no auxiliary heat (2H/2C).

62-3070—03

M22791A

Fig. 17. Typical hookup of multistage heat pump
with auxiliary heat (3H/2C).

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT

Sensor Wiring for Temperature Averaging
SUBBASE

SUBBASE
S1

T7770A

T7770A1006

T7770A

1
T7770A3002
T7770A

T7770A1006

T7770A

M22831

Fig. 18. Wiring four T7770A1006 (20K ohm) Sensors.
SUBBASE
S1

1 THE T7770A3002 IS A 10K OHM SENSOR. M22934

Fig. 20. Wiring two T7770A1006 (20K ohm) Sensors
and one T7770A3002 (10K ohm) sensor to provide a
temperature averaging network

Y2
T4

T3
W2
S1

T7770A3002

1 THE T7770A3002 IS A 10K OHM SENSOR.

1
C7189

C7189

M22933

Fig. 19. Wiring two T7770A3002 (10K ohm) Sensors to
provide a temperature averaging network.
1

WIRES MUST HAVE A CABLE SEPARATE FROM
THE THERMOSTAT CABLE.

M22935

Fig. 21. Wiring four C7189U (10K ohm) Sensors to
provide a temperature averaging network.

62-3070—03

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT

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).

IMPORTANT
This tab must be removed in order to set the
real-time clock.

REMOVE DURING
INSTALLATION

REMOVE
TAB

Wiring 24 Vac Common

REMOVE DURING
INSTALLATION

• 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.

M19920

Install three AAA alkaline batteries on the back of
the thermostat as marked. See Fig. 22.

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:

BATTERIES (3)

M19918

Fig. 22. Installing batteries.
2.

Locate and remove the tab labeled Remove. See
Fig. 23.

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

MON

TUE

WED

THU

FRI

WED

MON

SUN

THU

FRI

SUN

OK TO PICK MULTIPLE DAYS SCREEN LOCKED
CHANGE FILTER UV LAMP HUMIDIFIER PAD

DONE

USE ARROWS TO SET YEAR AND TIME

Fig. 24. Setting calendar and time after initial powerup.

Mount Thermostat to Wallplate
1.
2.

it snaps into place. See Fig. 25.

Align the terminal screw blocks with the pins on the
back of the thermostat.
Push the thermostat straight onto the wallplate until

62-3070—03

M22761

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT

Advanced Settings
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.

WALL

REMOVE DURING
INSTALLATION

NOTE: To cycle through the Setup Numbers, press the
up or down arrow.

M19919

Fig. 25. Mount thermostat to wallplate.

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.
MO

Inside

CAUTION

Set To

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

Following
Schedule

SYSTE
M
EM
HEAT
OFF

DONE

CANC

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

Installer Setup
Name
Date (Year Upper)

Default
Setting
20

All Settings

Notes

20—20xx
21—21xx

Available year range: 2001 - 2178
Available year range: 2001 - 2178

0130

Date (Year Lower)

00-99

0140

Date (Month)

1-12

0150

Date (Day)

1-31 (Month Dependent)

0160

Schedule Options

0—Non-Programmable
4—Programmable

62-3070—03

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Table 4. Installer Setup Menu. (Continued)
Installer
Setup
Number

Installer Setup
Name

Default
Setting

All Settings

Notes

0170

System Selection

1—1H/1C Conv
To use the Emergency Heat button, select setting
2—1H/1C HP
#7 or #12. See Fig. 16 or 17 for auxiliary heat
3—1H w/o fan
wiring.
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)

0175

TOD/Economizer
output (terminal A)

0—Unused
1—TOD
2—Economizer

Economizer energizes A during a call for cool.
TOD energizes A during Occupied period, and deenergizes A during Unoccupied.

0180

Heat Fan Operation 0

0—Fossil
1—Electric

Only shown for conventional system with heat
stages and fan capability selected. If heat pump is
selected, fan defaults to electric.

0185

Pre-occupancy
Purge Duration

0—no duration
1—one hour
2—two hours
3—three hours

Shown only if system has fan and schedule
programmable.
Pre-occupancy purge enabled by nonzero duration
(and sends economizer to minimum position).

0190

Reversing Valve
O/B

0—O (O/B On Cool)
1—B (O/B On Heat)

Only shown with heat pump system selected.

0220

Cycles Per Hour
3
(CPH) for first stage
compressor

1-6

Only shown for system with cool stages. Selection
in this stage changes default CPH of second stage
cool.

0230

CPH for second
stage compressor

1-6

Only shown if two stages of cool selected.

0240

CPH for first stage
conventional heat

1-12

Only shown if system is conventional with heat
stages.
Selection in this stage changes default CPH of
second stage heat.

0250

CPH for second
9
stage conventional
heat

1-12

Only shown with at least two stages conventional
heat or 2H/1C heat pump selected.

0260

CPH for third Stage 9
Heat

1-12

Only shown if 3H/2C heat pump is selected.

0270

CPH for Auxiliary
Heat

1-12

Only shown if multi-stage heat pump is selected
(heat pump with more heat than cool stages).

0280

Continuous
Backlight

0—No
1—Yes

Always shown. If AC power not present the option
is overridden and normal backlight operation
occurs.

0300

Changeover

0—Manual
1—Auto

Only shown if system has both heat and cool
stages.

0310

Deadband

3°F
(2°C)

2 (1.5)—2°F (1.5°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)

Only shown if Automatic Changeover Selected

0320

Temperature
Indication Scale

0—°F
1—°C

0330

Daylight Saving

0—Disabled
1—Enabled (US 1987)
2—Enable (US 2007)
3—Enabled (Europe)

62-3070—03

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Table 4. Installer Setup Menu. (Continued)
Installer
Setup
Number

Installer Setup
Name

Default
Setting

All Settings

Notes

0340

Remote
Temperature
Sensor

0—None
1—Outdoor for Display
2—Outdoor for Control
3—Remote 10K Indoor
4—Remote 20K Indoor

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).

0350

Heat Pump
Compressor
Lockout

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)

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

0360

Heat Pump
Auxiliary Lockout

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)

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.

0535

Temporary
Occupied Duration
Limit

0—no duration
1—one hour
2—two hours
3—three hours
4—four hours

0 means no limit

0540

Number of Periods 4

2—2 Periods
4—4 Periods

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.

0580

Minimum
Compressor Off
Time

0—Off
2—2 minutes
3—3 minutes
4—4 minutes
5—5 minutes

Only shown if system has cool stages.

0600

Heat Temperature
Range Stops

40 to 90°F (4 to 32°C)

Only shown if system has heat stages.

0610

Cool Temperature
Range Stops

50 to 99°F (10 to 37°C)

Only shown if system has cool stages.

0640

Clock Format

12—12 Hour
24—24 Hour

0650

Extended Fan-on
time Heat

0—Off
90—90 seconds

Not displayed with fan set to fossil or with cool-only
systems

0660

Extended Fan-on
time Cool

0—Off
40—40 seconds

Only shown if system has cool stages.

0670

Keypad Lockout

0—Unlocked
1—Partial Lockout 1
2—Partial Lockout 2
3—Fully Locked

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.

0680

Temperature
Control Heat

1—Less Aggressive
2—Standard
3—More Aggressive

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.)

0685

Recovery Heat
Ramp Rate

0-20°F/hour

Only shown if system has heat stages.
0 disables ramped recovery (step setpoint change
at period start time).

62-3070—03

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Table 4. Installer Setup Menu. (Continued)
Installer
Setup
Number

Installer Setup
Name

Default
Setting

All Settings

Notes

0690

Temperature
Control Cool

1—Less Aggressive
2—Standard
3—More Aggressive

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.)

0695

Recovery Cool
Ramp Rate

0-20°F/hour

Only shown if system has cool stages.
0 disables ramped recovery (step setpoint change
at period start time).

0700

Temperature
Display Offset

-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)

This offset applies to both the control temperature
and to the display temperature for indoor sensor
(and remote indoor sensor).

0710

Restore Factory
Defaults

0—No
1—Yes

Resets all ISU parameters to default values and
resets the schedule to default Energy Star. Retains
only calendar settings and time.

INSTALLER TESTS
Test 1

Installer Test
Cool

0—Off
1—Cool Stage 1
2—Cool Stage 2

Test 2

Installer Test
Fan

0—Off
1—Fan On

Test 3

Installer Test
Heat

0—Off
1—Heat Stage 1
2—Heat Stage 1 and 2
3—Heat Stage 1,2 and 3

Test 4

Installer Test
Auxiliary Heat

0—Auxiliary Heat Off
1—Auxiliary Heat On

Test 8

Installer Test
TOD/Economizer

0—TOD/Economizer Off
1—TOD/Economizer On

NOTE: Press the Done button to exit the Installer System Test.

OPERATION
System Settings

Table 5. Energy Star Default Program Settings.
Setpoints

Schedule
Period

Time

Heat

Cool

Fan
Setting

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.

Occ1

8:00am

70°F
(21°C)

78°F
(25.5°C)

Auto

Unocc1

10:00pm

55°F
(10°C)

85°F
(29.5°C)

Auto

Occ2a

—

Fan Settings

Unocc2a

—

Auto —Fan runs only when heating/cooling system is on.
On—Fan runs continuously.

a The thermostat default setting is two period only. To use
four periods, change the appropriate setup parameter.

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

minutes in the Installer Setup. The Minimum-Off Timer is
activated after the compressor turns off:
— If the thermostat is system powered (common wire),
the Minimum-Off Timer is also activated upon initial
startup and after power interruptions.
— If there is a call for cooling or heating during the
Minimum-Off Time, the thermostat displays “Wait.”

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT

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
Occupied

Call for
Cool
—

Unoccupied Yes
Override

Terminal A
Economizer
Energized

TOD
Energized

Energized

De-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.
OUTDOOR TEMPERATURE

— 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.

COMPRESSOR ONLY
50

BOTH COMPRESSOR AND
AUXILIARY HEAT
35

AUXILIARY ONLY

AUXILIARY
LOCKOUT
TEMPERATURE
COMPRESSOR
LOCKOUT
TEMPERATURE
M19950

Fig. 27. Heat Pump Operation with Lockout
Temperatures Set.

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.
Check that AAA batteries are installed
correctly and are good.

Temperature settings do not
change.

The upper or lower temperature limits
were reached.

Check temperature setpoints.
Check Installer Setup Numbers 0600 and
0610; modify as needed.

The keypad is fully locked.

Check Installer Setup Number 0670 to
change keypad locked options.

Thermostat minimum off-time is
activated.

Wait up to five minutes for the system to
respond.

System selection not set to Heat or
Cool.

Set system Selection to correct position.

System type Selection is incorrect.

Check Installer Setup Number 0170 and
make sure correct System type is chosen.

Heating or cooling does not
come on.

Thermostat is calling for Heat Heating or cooling equipment is not
(Heat on) or Cool (Cool on) but operating.
no heating or cooling is
running.

Check wiring.
Check Installer Setup Number 0170 and
make sure correct system type is chosen.
Verify operation of equipment in System Test
mode.

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

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.

Heating equipment failure.

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.
Loose or broken wire connection
between thermostat and heating
equipment.

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.

Heat pump puts out cool air in Changeover Valve (Installer Setup
the heat mode and warm air in Number 0190) is not configured to
the cool mode.
match the changeover required by the
installed heat pump.

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

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

The heating equipment is not a heat
pump but the System Type (Installer
Setup Number 0170) is set to Heat
Pump.

Set System Type (Installer Setup Number
0170) to match the installed heating and/or
cooling equipment.

Heating and cooling wires are shorted
together.

Separate the shorted heating and cooling
wires.

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
(Y) and transformer common. If 24 Vac is
present, the thermostat is functional. Check
the cooling equipment to find the cause of
the problem.

Loose or broken wire connection
between thermostat and cooling
equipment.

62-3070—03

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.

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
Table 7. Troubleshooting. (Continued)
Symptom

Possible Cause

Action

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

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

Set Fan Control in Heating to Electric
Furnace (Setting 0180).

Heating equipment is running
in the cool mode.

Heating equipment is not a heat pump
but System Type (Installer Setup
Number 0170) is set to Heat Pump.

Set System Type (Installer Setup Number
0170) to match the installed heating and/or
cooling equipment.

Heating equipment does not
Heating equipment is not a heat pump
turn off and heat temperature but System Type (Installer Setup
setting is set below room
Number 0170) is set to Heat Pump.
temperature (Heat On is not in
the display).

Set System Type (Installer Setup Number
0170) to match the installed heating and/or
cooling equipment.

Cannot set the system setting System Type (Installer Setup Number
to Heat.
0170) is set to Cool Only.

Set System Type (Installer Setup Number
0170) to match the installed heating and/or
cooling equipment.

Cannot set the system setting System Type (Installer Setup Number
to Cool.
0170) is set to Heat Only or Heat Only
with Fan.

Set System Type (Installer Setup Number
0170) to match the installed heating and/or
cooling equipment.

Heat On is not in the display.

System setting is not set to Heat and/or Set the system setting to Heat and set the
temperature setting is not set above
temperature setting above the room
room temperature.
temperature.

Cool On is not in the display.

System setting is not set to Cool and/or Set the system setting to Cool and set the
the temperature setting is not set below temperature setting below the room
room temperature.
temperature.

Wait is in the display.

Compressor minimum off timer is
active.

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

62-3070—03

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT

SPECIFICATIONS
Electrical Ratings:
Voltage
(50/60 Hz)

Terminal

Running
Current

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).

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.

Shipping Temperature:
-30°F to 150°F (-34.4°C to 65.6°C).
Operating Relative Humidity (Non-condensing):
5% to 90%.

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

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Title                           : 62-0370-03 - TB8220U Commercial VisionPRO Programmable Thermostat
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Description                     : Installation Instructions
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Subject                         : Installation Instructions
Author                          : Honeywell

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