Honeywell TB7220U User manual

INSTALLATION INSTRUCTIONS
62-0223—1
TB7220U
Ultrastat
Programmable Thermostat
APPLICATION
The TB7220U Programmable Thermostat provides electronic control of 24 Vac heating and cooling systems.
See Table 1 for a description.
Table 1. TB7220U Thermostat Description.
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.
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.
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.
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
5 FEET
[1.5 METERS]
YES
NO
M22258
NO
NO

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
62-0223—1 2
Separate Wallplate from Thermostat
1. Separate the wallplate from the thermostat. See
Fig. 2.
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.
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. Ensure all wires are pulled through the wire hole on
the wallplate.
6. Position the wallplate over the wall anchors.
7. Insert the mounting screws into the wall anchors
and tighten.
Fig. 3. Install wallplate.
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. 6 through 16 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).
Fig. 4. Terminal identifications for system type.
2. Loosen screw terminals used for the application.
3. Insert the wires into the terminal block and tighten
each screw terminal.
4. Push excess wire back into the wall opening and
restrict wires to the shaded area. See Fig. 5.
5. Plug the wall opening with nonflammable insulation
to prevent drafts from affecting the thermostat.
Fig. 5. Restrict wires to shaded area of wire hole.
THERMOSTAT
WIRE HOLE
M22267
WALLPLATE
M22268
DRILLED
HOLES (2)
WALL
ANCHORS (2)
MOUNTING
SCREWS (2)
WALLPLATE
M23052
C
G
Y
O/B
RC
R
W1
Y2
S1
S2
C
G
Y
W
RC
R
W2
Y2
S1
S2
SCREW
TERMINALS
HEAT PUMP
CONVENTIONAL
WALLPLATE
M22266
WALL OPENING
WIRE
SHADED AREA

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
3 62-0223—1
Table 2. Terminal Designation Descriptions.
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. Sensor wires must have a cable separate
from the thermostat control cable.
Table 3. Wiring Diagrams.
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.
WHeatrelay.
G Fan relay.
W2 Second stage heat relay.
Y2 Second stage cooling.
O/B (see Note 3) Changeover valve for heat pumps.
S1 (See Note 4) Optional outdoor or indoor remote sensor.
S2 (See Note 4) Optional outdoor or indoor remote sensor.
System Type
Wallplate
Terminal
Identifications
Wiring
Diagram
Figure
Standard Heat/Cool Conventional 6, 7
Heat Only Conventional 8
Heat Only with Fan Conventional 9
Cool only Conventional 10
Standard Multistage
up to 2 Heat/2 Cool
Conventional 11, 12
Heat Pump
(No Auxiliary Heat)
Heat Pump 13, 14
Heat Pump
(with Auxiliary Heat)
Heat Pump 15, 16
Multiple T7770A Sensors — 17, 18, 19
Multiple C7189U Sensors — 20

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
62-0223—1 4
Conventional System Wiring
Fig. 6. Typical wiring of single transformer
1H/1C system.
Fig. 7. Typical hookup of dual transformer
1H/1C system.
Fig. 8. Typical hookup of heat-only system.
Fig. 9. Typical hookup of heat-only system with fan.
Fig. 10. Typical hookup of cool-only system.
COMPRESSOR CONTACTOR OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY
FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
1
2
3
C
G
Y
W
RC
R
W2
Y2
S1
S2
2
3
L1
(HOT)
L2
1
24 VAC
M23053
COMPRESSOR CONTACTOR
M23054
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY
FAN RELAY
COOLING
TRANSFORMER
HEATING
TRANSFORMER
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.
1
3
2
3
L1
(HOT)
L2
1
24 VAC
L1
(HOT)
L2
1
24 VAC
C
G
Y
W
RC
R
W2
Y2
S1
S2
2
M23055
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
OPTIONAL.
1
3
2
3
L1
(HOT)
L2
1
24 VAC
C
G
Y
W
RC
R
W2
Y2
S1
S2
2
M23056
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
HEAT RELAY
FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
1
2
3
3
L1
(HOT)
L2
1
24 VAC
C
G
Y
W
RC
R
W2
Y2
S1
S2
2
M23057
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
1
3
2
3
COMPRESSOR CONTACTOR
L1
(HOT)
L2
1
24 VAC
C
G
Y
W
RC
R
W2
Y2
S1
S2
2

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
5 62-0223—1
Fig. 11. Typical hookup of single transformer
multistage system (up to 2H/2C).
Fig. 12. Typical hookup of dual transformer multistage
system (up to 2H/2C).
M23058
HEAT RELAY 2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
1
3
2
3
COOL RELAY 1
HEAT RELAY 1
COOL RELAY 2
L1
(HOT)
L2
1
24 VAC
C
G
Y
W
RC
R
W2
Y2
S1
S2
2
M23059
HEAT RELAY 2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
FAN RELAY
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.
1
3
2
3
COOL RELAY 1
HEAT RELAY 1
COOL RELAY 2
L1
(HOT)
L2
1
24 VAC
L1
(HOT)
L2
1
24 VAC
C
G
Y
W
RC
R
W2
Y2
S1
S2
2
COOLING
TRANSFORMER
HEATING
TRANSFORMER

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
62-0223—1 6
Heat Pump System Wiring
Fig. 13. Typical hookup of single-stage heat pump
with no auxiliary heat (1H/1C).
Fig. 14. Typical hookup of multistage heat pump with
no auxiliary heat (2H/2C).
Fig. 15. Typical hookup of single-stage heat pump
with auxiliary heat (2H/1C).
Fig. 16. Typical hookup of multistage heat pump
with auxiliary heat (3H/2C).
COMPRESSOR CONTACTOR
M23059
CHANGEOVER VALVE
1
2
3
4
5
FAN RELAY
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.
WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
L1
(HOT)
L2
1
24 VAC
5
C
G
Y
O/B
RC
R
W1
Y2
S1
S2
4
2
COMPRESSOR 1 COMPRESSOR 2
M23061
CHANGEOVER VALVE
FAN RELAY
1
2
3
4
5
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.
WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
L1
(HOT)
L2
1
24 VAC
5
C
G
Y
O/B
RC
R
W1
Y2
S1
S2
4
2
COMPRESSOR CONTACTOR
M23062
CHANGEOVER VALVE
1
2
3
4
5
FAN RELAY
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.
WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
L1
(HOT)
L2
1
24 VAC
5
AUXILIARY HEAT RELAY
C
G
Y
O/B
RC
R
W1
Y2
S1
S2
4
2
COMPRESSOR 1
COMPRESSOR 2
M23063
CHANGEOVER VALVE
FAN RELAY
1
2
3
4
5
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.
WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
L1
(HOT)
L2
1
24 VAC
5
AUXILIARY HEAT RELAY
C
G
Y
O/B
RC
R
W1
Y2
S1
S2
4
2

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
7 62-0223—1
Sensor Wiring for Temperature Averaging
Fig. 17. Wiring four T7770A1006 (20K ohm) Sensors.
Fig. 18. Wiring two T7770A3002 (10K ohm) Sensors to
provide a temperature averaging network.
Fig. 19. Wiring two T7770A1006 (20K ohm) Sensors
and one T7770A3002 (10K ohm) sensor to provide a
temperature averaging network
Fig. 20. Wiring four C7189U (10K ohm) Sensors to
provide a temperature averaging network.
M22831
S1 S2
TT
SUBBASE
T7770A
TT
T7770A
TT
T7770A
TT
T7770A
M22933
S1 S2
SUBBASE
T7770A3002
T4 T3
T7770A3002
T4 T3
1
11
THE T7770A3002 IS A 10K OHM SENSOR.
M22934
T4 T3
T7770A3002
1
1
THE T7770A3002 IS A 10K OHM SENSOR.
S1 S2
TT
SUBBASE
T7770A1006
TT
T7770A1006
M23027
WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
1
1C7189 C7189
C7189 C7189
S1 S2
SUBBASE

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
62-0223—1 8
POWER THE THERMOSTAT
You can choose from three methods to power the
thermostat:
• Batteries only (AA alkaline).
• 24 Vac direct connection only.
• 24 Vac direct connection with battery backup (AA
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 two AA alkaline batteries on the back of the
thermostat as marked. See Fig. 21.
Fig. 21. Installing batteries.
2. Locate and remove the tab labeled Remove. See
Fig. 22.
IMPORTANT
This tab must be removed in order to set the
real-time clock.
Fig. 22. Remove tab labeled REMOVE from thermostat
back.
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
it snaps into place. See Fig. 23.
Fig. 23. Mount thermostat to wallplate.
M22259
BACK OF THERMOSTAT
BATTERY HOLDER
BATTERIES (2)
REMOVE
TAB
REMOVE DURING
INSTALLATION
M22260
REMOVE DURING
INSTALLATION
WALL
M23024

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
9 62-0223—1
SETTING CALENDAR AND TIME
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 and time for this thermostat:
SETTING DATE/TIME 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 DATE/TIME AFTER THERMOSTAT IS ALREADY
FUNCTIONING
Use the installer setup to set year, month and day. See
Fig. 25.
Fig. 24. Setting calendar and time when thermostat is first powered.
Fig. 25. Setting Date/Time after thermostat is already
functioning.
ADVANCED SETTINGS
The thermostat has advanced settings to match the HVAC
system. These settings can be adjusted to match specific
needs. See the following section (Installer Setup
Numbers, Settings, and Tests) for details.
M23023
MONTH
YEAR DAY
GO BACK KEY
GOES BACK TO
LAST SETTING
NEXT KEY
ADVANCE TO NEXT SETTING
DONE KEY
ADVANCES TO TIME SETTING
SCREEN AND HOME SCREEN
UP AND DOWN KEYS
CHANGES MONTH, DAY,
YEAR AND TIME
DeSelect Day
System & Fan
FanUseEdit
Schedule
View
Clock & More
Tue
Done
PM
M23049
0120 Date (Year
Upper)
Select first two digits of current
calendar year (20 for year 2005, etc).
Date (Year
Lower)
Select last two digits of current
calendar year (05 for year 2005, etc).
Date
(Month)
Select number that represents current
calendar month.
Date
(Day)
Select number that represents current
calendar date.
0130
0140
0150
CHANGE
THE
FACTORY
SETTING
FACTORY
SETTING
ADVANCE TO
NEXT SETUP
NUMBER
PRESS TO
EXIT SETUP
GOES BACK
TO LAST
SETUP
NUMBER
View
Clock & More
Next
Go Back
SETUP
NUMBER AM
Setup
Number
Setup
Name
(Select Your Setting)
Settings
Done

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
62-0223—1 10
INSTALLER SETUP NUMBERS, SETTINGS, AND TESTS (TABLE 4)
Configure Installer Setup
1. Press and release the System key.
2. Press System and Done keys simultaneously.
3. Hold keys for approximately five seconds, until the
screen changes.
4. When the display changes, release the System and
Done keys.
NOTE: See Table 4 for installer setup (ISU) numbers
and settings.
5. Use the Up and Down keys to change the value of
the ISU currently displayed.
6. Use the Go Back and Next keys to move from the
current ISU to another.
Installer System Tests
Use Installer System Test to test heating, cooling and fan.
For test details, refer to the latter portion of Table 4.
CAUTION
Equipment Damage Hazard.
Minimum compressor off time is bypassed
during Installer System Test
Avoid cycling compressor quickly.
IMPORTANT
The setting chosen for System Type (ISU 0170)
can prevent some System Test Numbers from
appearing.
Table 4. Installer Setup Menu.
Installer
Setup
Number
Installer Setup
Name
Default
Setting All Settings Notes
0120 Date (Year Upper) 20 20—20xx
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 Available day range varies by month.
0160 Schedule Options 4 0—Non-Programmable
4—Programmable
0170 System Selection 8 1—1H/1C Conv
2—1H/1C HP
3—1H w/o fan
4—1H with fan
6—1C
7—2H/1C HP
8—2H/2C Conv
9—2H/1C Conv
10—1H/2C Conv
11—2H/2C HP
12—3H/2C HP
0180 Heat Fan Operation 0 0—System controls fan
1—Thermostat controls
fan (ON during call for
heat)
Only shown for conventional system with heat
stages and fan capability (ISU 0170) selected.
If heat pump is selected, fan always operates with
Thermostat control.
The only thing that allows the fan to turn off during
occupied periods is a manual override of the fan
from On to Auto.
0185 Pre-occupancy
Purge Duration
0 0—no duration
1—one hour
2—two hours
3—three hours
Only shown if thermostat is programmable
(ISU 0160).
0190 Reversing Valve
O/B
0 0—O (O/B On Cool)
1—B (O/B On Heat)
Only shown with heat pump system selected.
0220 Cycles Per Hour
(CPH) for first stage
compressor
3 1-6 Only shown for system with cool stages
(ISU 0170). Selection in this stage changes
second stage cool default CPH.
0230 CPH for second
stage compressor
3 1-6 Only shown for system with two stages of cool
(ISU 0170).
0240 CPH for first stage
conventional heat
5 1-12 Only shown for conventional system with heat
stages (ISU 0170).
Selection in this stage changes default CPH of
second stage heat.

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
11 62-0223—1
0250 CPH for second
stage conventional
heat
9 1-12 Only shown for conventional system with at least
two stages conventional heat or 2H/1C heat pump
(ISU 0170).
0260 CPH for third Stage
Heat
9 1-12 Only shown for 3H/2C heat pump system
(ISU 0170).
0270 CPH for Auxiliary
Heat
9 1-12 Only shown for multi-stage heat pump system with
more heat than cool stages (ISU 0170).
0280 Continuous
Backlight
0 0—No
1—Yes
Always shown. If AC power not present the option
is overridden and normal backlight operation
occurs.
0300 Changeover 1 0—Manual
1—Auto
Only shown for system with both heat and cool
stages (ISU 0170).
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 for Auto Changeover system
(ISU 0300).
0320 Temperature
Indication Scale
0 0—°F
1—°C
0330 Daylight Saving 2 0—Disabled
1—Enabled (US 1987)
2—Enabled (US 2007)
3—Enabled (Europe)
0340 Remote
Temperature
Sensor
0 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 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 (ISU 0170) and remote outdoor
control sensor (ISU 0340 at 2).
Requires a deadband between this and the
Auxiliary Lockout (ISU 360).
0360 Heat Pump
Auxiliary Lockout
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)
Only shown for heat pump systems with more heat
stages than cool (ISU 0170) and remote outdoor
control sensor (ISU 0340 at 2).
Requires a deadband between this and the Heat
Pump Compressor Lockout (ISU 350).
0535 Temporary
Occupied Duration
Limit
3 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 with Non-programmable chosen
(ISU 0160 at 0).
Applies to all days of the week.
0580 Minimum
Compressor Off
Time
50—Off
2—2 minutes
3—3 minutes
4—4 minutes
5—5 minutes
Only shown if system has cool stages (ISU 0170).
0600 Heat Temperature
Range Stops
90 40 to 90°F (4 to 32°C) Only shown if system has heat stages (ISU 0170).
0610 Cool Temperature
Range Stops
50 50 to 99°F (10 to 37°C) Only shown if system has cool stages (ISU 0170).
Table 4. Installer Setup Menu. (Continued)
Installer
Setup
Number
Installer Setup
Name
Default
Setting All Settings Notes

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
62-0223—1 12
NOTE: Press the Done key to exit the Installer System Test.
0640 Clock Format 12 12—12 Hour
24—24 Hour
0650 Extended Fan-on
time Heat
00—Off
90—90 seconds
Not displayed with cool-only systems (ISU 0170 at
6) or with fan set to system control (ISU 0180 at 0).
0660 Extended Fan-on
time Cool
00—Off
40—40 seconds
Only shown for systems with cool stages
(ISU 0170).
0670 Keypad Lockout 0 0—Unlocked
1—Partial Lockout 1
2—Partial Lockout 2
3—Fully Locked
Unlocked: All functions accessible.
Partial 1: Locks all but Holiday, Override, Up, and
Down.
Partial 2: Locks all but Holiday and Override.
Full: Entire interface locked/non-functional.
0680 Temperature
Control Heat
2 1—Less Aggressive
2—Standard
3—More Aggressive
Only shown if system has heat stages (ISU 0170).
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
5 0-20°F/hour Only shown if system has heat stages (ISU 0170).
0 disables ramped recovery (step setpoint change
at period start time).
0690 Temperature
Control Cool
2 1—Less Aggressive
2—Standard
3—More Aggressive
Only shown if system has cool stages (ISU 0170).
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
3 0-20°F/hour Only shown if system has cool stages (ISU 0170).
0 disables ramped recovery (step setpoint change
at period start time).
0700 Temperature
Display Offset
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)
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 0—No
1—Yes
Resets all ISU parameters to default values and
resets the schedule to default Energy Star (see
Table 5). Retains only calendar settings and time.
INSTALLER TESTS
Test 1 Installer Test
Cool
00—Off
1—Cool Stage 1
2—Cool Stage 2
Test 2 Installer Test
Fan
00—Off
1—Fan On
Test 3 Installer Test
Heat
00—Off
1—Heat Stage 1
2—Heat Stages 1 and 2
3—Heat Stages 1,2 and 3
Test 4 Installer Test
Auxiliary Heat
0 0—Auxiliary Heat Off
1—Auxiliary Heat On
Table 4. Installer Setup Menu. (Continued)
Installer
Setup
Number
Installer Setup
Name
Default
Setting All Settings Notes

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
13 62-0223—1
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 operates heat or cool,
depending on indoor temperature.
Fan Settings
— Auto: Fan runs only when heating/cooling system on.
—On: Fan runs continuously.
NOTE: The default fan settings can only be changed
manually. They cannot be reprogrammed.
Table 5 shows default program settings. See Owner’s
Guide for complete instructions to change the program.
Table 5. Energy Star Default Program Settings.
aThe default fan settings can only be changed manually.
Minimum-Off Timer
(Compressor Protection)
The thermostat has an adjustable Minimum-Off Timer that
can be set from zero to five minutes (factory default: 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
minutes in the Installer Setup (ISU 580). The Minimum-Off
Timer activates after the compressor turns off:
— If the thermostat is system powered (common wire),
the Minimum-Off Timer also activates 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.”
— When the Minimum Off Timer expires, “Cool On” or
“Heat On” (heat pumps only)” appears in the display
and the compressor and fan turn on.
Outdoor or Indoor Temperature Sensor
When installing a temperature sensor:
1. Allow the sensor to absorb the air for a minimum of
five minutes before taking a reading.
2. See the instructions packed with the sensor for
more information.
NOTE: Only heat pump systems can provide more than
display of outdoor temperature.
Heat Pump Temperature Lockouts
Heat Pump with Auxiliary (Backup) Heat and
Outdoor Temperature Sensor
1. Choose correct heat pump application (ISU 0170).
2. Choose Outdoor Temperature Sensor for Control
(set ISU 0340 to 2).
3. Choose correct Compressor Lockout Temperature
(ISU 0350).
4. Choose the correct Auxiliary Lockout Temperature
(ISU 0360).
NOTE: There is a 5°F deadband between Compressor
and Auxiliary Heat lockout temperatures.
Operation in Heat Mode (Fig. 26)
When the outdoor temperature is:
— Below the Compressor Lockout Setting (ISU 0350):
— Only the Auxiliary Heat operates.
— The fan (G terminal) does not energize when the
thermostat calls for heat.
— Above the Auxiliary Lockout Setting (ISU 0360):
— Only the compressor operates.
— The fan (G terminal) energizes when the thermo-
stat calls for heat.
— Between the two temperatures, both the Compressor
and Auxiliary Heat operate.
Fig. 26. Heat Pump Operation with Lockout
Temperatures Set.
Schedule
Period Time
Setpoints Fan
Settinga
Heat Cool
Occ1 8:00am 70°F
(21°C)
75°F
(25.5°C)
On
Unocc1 10:00pm 55°F
(10°C)
85°F
(24°C)
Auto
Occ2 1:00pm 70°F
(21°C)
75°F
(25.5°C)
On
Unocc2 12:00pm
(Noon)
55°F
(10°C)
85°F
(24°C)
Auto
35
M19950
COMPRESSOR
LOCKOUT
TEMPERATURE
AUXILIARY
LOCKOUT
TEMPERATURE
COMPRESSOR ONLY
BOTH COMPRESSOR AND
AUXILIARY HEAT
AUXILIARY ONLY
50
OUTDOOR TEMPERATURE

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
62-0223—1 14
TROUBLESHOOTING (TABLE 6)
Table 6. Troubleshooting.
Symptom Possible Cause Action
Display does not come on. Thermostat is not being powered. Check for 24 Vac between RC and C.
Check that AA batteries are installed
correctly and are good.
Cannot change temperature
settings.
The upper or lower temperature
Temperature Range Stop has been
reached.
Check temperature setpoints.
Check ISU 0600 and ISU 0610; modify as
needed.
The keypad is fully locked. Check ISU 0670 to change keypad lock
options.
Heating or cooling does not
come on.
Thermostat minimum off-time is
activated.
Wait up to five minutes for the system to
respond.
System selection set improperly. Set system to correct position.
System type selection is incorrect. Check ISU 0170 and make sure correct
System type is chosen.
Thermostat is calling for Heat
(Heat on) or Cool (Cool on) but
no heating or cooling is
running.
Heating or cooling equipment is not
operating.
Check wiring.
Check ISU 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).
Heating equipment failure. Check for 24 Vac at the equipment on the
secondary side of the transformer between
power and common. If voltage is not present,
check the heating equipment to find the
cause of the problem.
Check for 24 Vac between the heat terminal
(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
the heat mode and warm air in
the cool mode.
Changeover Valve (ISU 0190) is not
configured to match the changeover
required by the installed heat pump.
Set Changeover Valve (ISU 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 (ISU 0170)
is set to Heat Pump.
Set System Type (ISU 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
On is solid in the display).
Cooling equipment failure. Check for 24 Vac at the equipment on the
secondary side of the transformer between
power and common. If voltage is not present,
check the cooling equipment to find the
cause of the problem.
Check for 24 Vac between the cool terminal
(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.
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.

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
15 62-0223—1
Fan does not turn on during a
call for heat.
System does not control the fan and
Heat Fan Operation is set for it to do so
(ISU 0180 set to 0).
Set Heat Fan Operation for the thermostat to
control the fan (set ISU 0180 to 1).
Heating equipment is running
in the cool mode.
Heating equipment is not a heat pump
but System Type (ISU 0170) is set to
Heat Pump.
Set System Type (ISU 0170) to match the
installed heating and/or cooling equipment.
Heating equipment does not
turn off and heat temperature
setting is below room
temperature (Heat On is not in
the display).
Heating equipment is not a heat pump
but System Type (ISU 0170) is set to
Heat Pump.
Set System Type (ISU 0170) to match the
installed heating and/or cooling equipment.
Cannot adjust the system
setting to Heat.
System Type (ISU 0170) is set to Cool
Only.
Set System Type (ISU 0170) to match the
installed heating and/or cooling equipment.
Cannot adjust the system
setting to Cool.
System Type (ISU 0170) is set to Heat
Only or Heat Only with Fan.
Set System Type (ISU 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
temperature setting is not set above
room temperature.
Adjust the system setting to Heat and set the
temperature setting above the room
temperature.
Cool On is not in the display. System setting is not set to Cool and/or
the temperature setting is not set below
room temperature.
Adjust the system setting to Cool and set the
temperature setting below the room
temperature.
Wait is in the display. Compressor minimum off timer is
active.
Wait up to five minutes for the cooling or
heating (heat pump) equipment to activate.
Table 6. Troubleshooting. (Continued)
Symptom Possible Cause Action

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
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
© 2006 Honeywell International Inc.
62-0223—1 C.H. Rev. 12-06
SPECIFICATIONS
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:
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%.
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
Terminal
Voltage
(50/60 Hz)
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