Honeywell TB7220 User Manual
63-2636-03
TB7220 Ultrastat
Programmable Thermostat
FEATURES
• Large, clear display with backlight shows the current
and set temperature and time—even in the dark.
• Menu-driven programming make setup effortless.
• Beautiful ergonomic design is smart and sophisticated
to match your customers’ lifestyle.
• Real-time clock keeps time during power failures and
automatically updates to daylight savings.
• “Saving Changes” notification lets you know when the
schedule changes have been saved.
• Change reminders let you know when to replace the
batteries.
• Holiday Override options allow you to override the
APPLICATION
The TB7220 Ultrastat Programmable Thermostat is an
effortless, seven-day programmable thermostat that provides
universal system compatibility, precise comfort control and is
easy-to-program.
program schedule, as desired.
• Speedy same-schedule programming—no need to
copy multiple days.
• Armchair programming allows you to remove the
thermostat from the wall for programming.
PRODUCT DATA
The TB7220 provides temperature control for gas, oil, electric
and heat pumps for up to 2 heat, 2 cool systems.
Contents
Application ........................................................................ 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 4
Wiring ............................................................................... 5
Installer Setup .................................................................. 12
Operation .......................................................................... 17
Troubleshooting (Table 10) ............................................... 22
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT
SPECIFICATIONS
Thermostat Description: See Table 1.
Electrical Ratings: See Table 2.
Temperature:
Ratings:
Operating Ambient:
TB7220: 0°F to 120°F (-18°C to 49°C).
C7089U, C7189U: 5% to 95%.
Shipping: -30 °F to 150 °F (-34.4°C to 65.6°C).
Display Accuracy: ±1°F (±0.5°C).
Setpoint:
Range:
Heating: 40°F to 90°F (4°C to 32°C).
Cooling: 50°F to 99°F (10°C to 37°C).
Default Settings: See Table 3.
Humidity Ratings (RH, non-condensing):
TB7220 Thermostat: 5% to 90%.
C7089U, C7189U: 5% to 95%.
Table 1. Thermostat Description.
Feature Description
Powering
methods
System types
(up to
2 heat/2 cool)
Changeover Manual or Auto changeover selectable
System setting Heat-Off-Cool-Auto
Fan setting Auto-On
Terminal
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
• Battery only
• 24 Vac only
• 24 Vac with battery backup
• Gas or electric heat with air conditioning
• Warm air, hot water, high-efficiency
furnaces, and heat pumps
• Heat only
• Heat only with fan
• Cool only
Table 2. Electrical Ratings
Voltage
(50/60 Hz) Running Current
Table 3. Energy-saving Default Program Settings.
Schedule
Period Time
Occ1 8:00am 70°F (21°C) 75°F (24°C)
Unocc1 10:00pm 55°F (10°C) 85°F (29.5°C)
Occ2 — — —
Unocc2 — — —
Cycle Rates (at 50% Load):
Heating: Selectable 1 - 12 cycles per hour.
Cooling: Selectable 1 - 6 cycles per hour.
Interstage Differential:
Droopless control. Once the first stage is running at 90% load,
the thermostat energizes the second stage.
Cool Indication: Displays “Cool On” when Cool is activated.
Heat Indication: Displays “Heat On” when Heat is activated.
Auxiliary Heat Indication: Displays “Aux. Heat On” when
Auxiliary Heat is activated.
Clock Accuracy: ±1 minute per month.
Finish:
TB7000: Premier White® color.
C7189U Wall Mount Remote Indoor Sensor: Premier White®
color.
T7770A Wall Mount Remote Indoor Sensor: Premier White®
color.
Batteries:
Two replaceable AA alkaline batteries: Power thermostat when
24 Vac common is not used.
Non-replaceable lithium battery with ten-year life: Under nor-
mal conditions holds calendar and time settings.
NOTE: Alkaline batteries keep calendar and time if lithium
battery is no longer functional.
Resistance Characteristics of Remote Sensors:
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.
Setpoints
Heat Cool
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1985 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
63-2636—03 2
Calibration (TB7220, C7089U, C7189U, T7770A):
M24100
3-3/4
(95)
THERMOSTAT
AND WALLPLATE
1-3/8
(35)
6 (152)
LARGE COVER PLATE
BRACKET
LEVEL
LEVEL
MEDIUM COVER PLATE
UP
6-7/8 IN. (175 MM)
UP
8-5/16 IN. (211 MM)
6 IN.
(152 MM)
M13669
BRACKET FOR MOUNTING ON JUNCTION BOX NOT INCLUDED
WITH COVER PLATE
.
1
USE BOTTOM MOUNTING HOLES.
2
2
2
5 IN.
(127 MM)
1
2
2
No field calibration required.
Mounting Means:
TB7220: Direct wall-mount using mounting screws and
anchors provided. Fits standard vertical or horizontal
2 in. x 4 in. junction box.
C7089U: Mounts outside of living space with mounting clip and
screws provided.
C7189U, T7770A: Mounts directly on the wall using mounting
screws and anchors provided. Fits a vertical 2 x 4 in. junction box.
Cover Plate:
32003796-001 Cover Plate is used to cover marks left on the
wall by the old thermostat.
Dimensions:
TB7220 Thermostat: See Fig. 1.
C7089U Outdoor Sensor Mounting Clip: See Fig. 3.
C7189U Remote Indoor Sensor: see Fig. 5.
T7770A: See Fig. 4.
32003796-001 Cover Plate: See Fig. 2.
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT
Fig. 1. TB7220 Thermostat
dimensions in in. (mm).
Fig. 2. 32003796-001 Cover Plate dimensions in in. (mm).
1-1/2 (38)
M4488
Fig. 3. C7089U Outdoor Sensor Mounting Clip
dimensions in in. (mm).
3 63-2636—03
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT
MERCURY NOTICE
CAUTION
M24102
4-5/8
(117)
2-3/4 (70)
1-1/8
(29)
FRONT VIEW SIDE VIEW
KNOCKOUTS FOR
EUROPEAN APPLICATIONS
2-3/8
(60)
STANDARD
UTILITY
CONDUIT
BOX (2 X 4)
MOUNTING
HOLES
2-3/8 (60)
3-3/16 (80)
15/16
(23)
Fig. 4. T7770A dimensions in in. (mm).
5-1/16
(128)
M24101
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. 6.
NO
M22258
NO
NO
YES
5 FEET
[1.5 METERS]
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow them
2. Check ratings given in instructions and on the product to
3. Installer must be a trained, experienced service
4. After installation is complete, check out product
63-2636—03 4
Fig. 5. C7189U Indoor Sensor dimensions in in. (mm).
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.
could damage the product or cause a
hazardous condition.
ensure the product is suitable for your application.
technician.
operation as provided in these instructions.
Fig. 6. 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.
Separate Wallplate from Thermostat
1. Separate the wallplate from the thermostat. See Fig. 7.
WALLPLATE
WIRE HOLE
THERMOSTAT
M22267
Fig. 7. Separate wallplate from thermostat.
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT
CAUTION
WALL
MOUNTING
HOLES
M13665
MOUNTING
SCREWS (2)
WALL
ANCHORS (2)
WIRES THROUGH WALL
AND WIRE SLOT
Install Wallplate (See Fig. 8)
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. 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.
NOTES:
— Refer to Table 5 for terminal designation
descriptions.
— See Fig. 12 through 21 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. 9.
HEAT PUMP
CONVENTIONAL
1
SCREW
W2
Y2
S1
S2
W1
Y2
S1
S2
M24015
C
G
Y
O/B
RC
R
1
C
G
Y
W
RC
R
TERMINALS
FACTORY INSTALLED JUMPER.
Fig. 9. 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. See Fig. 10.
Fig. 8. Install wallplate.
WIRING
Electrical Shock Hazard.
Can cause electrical shock or equipment damage.
Disconnect power supply before connecting wiring.
IMPORTANT
— All wiring must agree with applicable codes,
ordinances and regulations.
— Use 18 gauge thermostat wire. Shielded cable is not
required.
M13666
WIRE HOLE
Fig. 10. Insert wires into terminal block.
4. Push excess wire back into the wall opening and restrict
wires to the shaded area. See Fig. 11.
5. Plug the wall opening with nonflammable insulation to
prevent drafts from affecting the thermostat.
5 63-2636—03
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT
WALLPLATE
M22266
WALL OPENING
WIRE
SHADED AREA
Fig. 11. Restrict wires to shaded area of wire hole.
Table 4. Wiring Diagrams.
System Type
Wallplate Terminal
Identifications
Wiring Diagram
Figure
Standard Heat/Cool Conventional 12, 13
Heat Only Conventional 14
Cool only Conventional 15
Standard Multistage
Conventional 16, 17
up to 2 Heat/2 Cool
Heat Pump
Heat Pump 18, 19
(No Auxiliary Heat)
Heat Pump
Heat Pump 20, 21
(with Auxiliary Heat)
Multiple T7770A
— 26, 27, 28
Sensors
Multiple C7189U
—29
Sensors
Table 5. Terminal Designation Descriptions.
Terminal
Designation Description
Rc
(see Note 1)
R
(see Note 1)
Power for cooling—connect to secondary side
of cooling system transformer.
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.
W Heat relay.
GFan relay.
W2 Second stage heat relay.
Y2 Second stage cooling.
O/B
Changeover valve for heat pumps.
(see Note 3)
S1
Optional outdoor or indoor remote sensor.
(See Note 5)
S2
Optional outdoor or indoor remote sensor.
(See Note 5)
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).
63-2636—03 6
Conventional System Wiring
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
M24016
COMPRESSOR CONTACTOR
M24017
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
M24018
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
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT
Fig. 12. Typical wiring of single transformer 1H/1C system.
Fig. 13. Typical hookup of dual transformer 1H/1C system.
Fig. 14. Typical hookup of heat-only system.
1
L1
(HOT)
24 VAC
L2
COMPRESSOR CONTACTOR
FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
1
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
3
C
G
W2
Y2
Y
W
RC
2
R
S1
S2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
Fig. 15. Typical hookup of cool-only system.
M24019
7 63-2636—03
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT
M24020
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
M24022
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
COMPRESSOR CONTACTOR
M24021
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
M24023
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
Fig. 16. Typical hookup of single transformer multistage
system (up to 2H/2C).
Fig. 17. Typical hookup of dual transformer multistage
system (up to 2H/2C).
Heat Pump System Wiring
Fig. 18. Typical hookup of single-stage heat pump with no
63-2636—03 8
auxiliary heat (1H/1C).
Fig. 19. Typical hookup of multistage heat pump with no
auxiliary heat (2H/2C).
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