TB7220U Installation Instructions

TB7220U

CommercialPRO™

Programmable Thermostat

INSTALLATION INSTRUCTIONS

APPLICATION

The TB7220U Programmable Thermostat provides electronic control of 24 Vac heating and cooling systems.

See Table 1 for a description.

Feature

Powering Methods

System Types

Changeover

System Setting

Fan Setting

Table 1. TB7220U Thermostat Description.

Description

• Battery only

• Direct connection to a 24 Vac transformer only

• Direct connection to a 24 Vac transformer with battery backup

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

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

Manual or automatic changeover (selectable)

Heat-Off-Cool-Auto

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

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.

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.

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.

62-0221-05

TB7220U COMMERCIALPRO™ PROGRAMMABLE THERMOSTAT

YES

NO

6. Insert the mounting screws into the wall anchors and tighten.

DRILLED

HOLES (2)

WALL

ANCHORS (2)

NO

NO 5 FEET

[1.5 METERS]

WALLPLATE

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.

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.

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.

M22268

MOUNTING

SCREWS (2)

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).

C

G

Y

O/B

RC

R

SCREW

TERMINALS

C

G

Y

W

RC

R

W2

Y2

A

S1

S2

W1

Y2

A

S1

S2

CONVENTIONAL

HEAT PUMP

M23010

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.

62-0221—05 2

WIRE WALLPLATE


WALL OPENING

SHADED AREA

M22266

Fig. 5. Restrict wires to shaded area of wire hole.

Terminal Designation

RC (see Note 1)

R (see Note 1)

Y

C (see Note 2)

W

G

W2

Y2

O/B (see Note 3)

A (see Note 4)

S1 (See Note 5)

S2 (See Note 5)

W1

Table 2. Terminal Designation Descriptions.

Description

Power for cooling—connect to secondary side of cooling system transformer.

Power for heating—connect to secondary side of heating system transformer.

Compressor output.

Common wire from secondary side of cooling system transformer.

Heat relay.

Fan relay.

Second stage heat relay.

Second stage cooling.

Changeover valve for heat pumps.

Economizer/Time-Of-Day (TOD) output—powered via RC terminal.

Optional outdoor or indoor remote sensor.

Optional outdoor or indoor remote sensor.

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

NOTES:

1.

2.

3.

4.

5.

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 cooling transformer must power the economizer.

— The A signal is powered from the RC terminal and energizes the economizer to signal occupied status and drive the damper to the set minimum position.

Table 3. Wiring Diagrams.

System Type

Standard Heat/Cool

Heat Only

Heat Only with Fan

Cool only

Standard Multistage up to 2 Heat/2 Cool

Heat Pump

(No Auxiliary Heat)

Wallplate

Terminal

Identifications

Conventional

Conventional

Conventional

Conventional

Conventional

Heat Pump

Heat Pump

(with Auxiliary Heat)

Heat Pump

Multiple TR21 Sensors

Multiple C7189U Sensors —

3

—

Wiring

Diagram

Figure

6, 7

8

9

10

11, 12

13, 14

15, 16

17, 18, 19

20

62-0221—05


Conventional System Wiring

1

L1

1

(HOT)

L2

24 VAC

2

HEAT RELAY

COMPRESSOR CONTACTOR

FAN RELAY

C

G

Y

W

RC

R

3

W2

Y2

A

S1

S2

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

1

2

3

ECONOMIZER

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD

PROTECTION AS REQUIRED.

FACTORY INSTALLED JUMPER.

WHEN USING BATTERIES, THE 24V COMMON CONNECTION

IS OPTIONAL.

M23011

Fig. 6. Typical wiring of single transformer

1H/1C system.

L2 24 VAC

2

C

G

Y

W

RC

R

3

W2

Y2

A

S1

S2

HEAT RELAY

ECONOMIZER

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

1

2

3




WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS

OPTIONAL.

M23013

Fig. 8. Typical hookup of heat-only system.

1

L1

(HOT)

L2

24 VAC

2

C

G

Y

W

RC

R

3

W2

Y2

A

S1

S2

L1

1

(HOT)

24 VAC

L2

COOLING

TRANSFORMER

2

C

G

Y

W

RC

R

3 W2

Y2

A

S1

S2

1

L1

(HOT)

24 VAC

L2

HEATING

TRANSFORMER

FAN RELAY


HEAT RELAY

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

ECONOMIZER

1

2

3



REMOVE FACTORY INSTALLED JUMPER.


IS OPTIONAL. WHEN USED, THE COMMON MUST CONNECT

TO THE COOLING TRANSFORMER SECONDARY.

M23012

Fig. 7. Typical hookup of dual transformer

1H/1C system.

HEAT RELAY

FAN RELAY

ECONOMIZER

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD


2 FACTORY INSTALLED JUMPER.

3 WHEN USING BATTERIES, THE 24V COMMON CONNECTION

IS OPTIONAL.

M23014

Fig. 9. Typical hookup of heat-only system with fan.

1

L1

(HOT)

L2

24 VAC

2

C

G

Y

W

RC

R

3

W2

Y2

A

S1

S2


FAN RELAY

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

1

2

3

ECONOMIZER





IS OPTIONAL.

M23015

Fig. 10. Typical hookup of cool-only system.

62-0221—05 4


L2

1

24 VAC

2

C

G

Y

W

RC

R

3 W2

Y2

A

S1

S2

COOL RELAY 1 COOL RELAY 2

FAN RELAY

HEAT RELAY 1

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

HEAT RELAY 2

ECONOMIZER

1

2

3

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND

OVERLOAD PROTECTION AS REQUIRED.



IS OPTIONAL.

M23016

Fig. 11. Typical hookup of single transformer multistage system (up to 2H/2C).

1

L1

(HOT)

L2

24 VAC

2

C

G

Y

W

RC

R

3

W2

Y2

A

S1

S2

1

FAN RELAY

COOL RELAY 1 COOL RELAY 2

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

2

3

HEAT RELAY 1

HEAT RELAY 2

ECONOMIZER

24 VAC

L2

HEATING

TRANSFORMER

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND

OVERLOAD PROTECTION AS REQUIRED.

REMOVE FACTORY INSTALLED JUMPER.


IS OPTIONAL. WHEN USED, THE COMMON MUST CONNECT

TO THE COOLING TRANSFORMER SECONDARY.

M23017

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

5 62-0221—05


Heat Pump System Wiring

L1

(HOT)

L2

1

24 VAC

3

W1

Y2

A

S1

S2

CHANGEOVER VALVE


FAN RELAY

2 FACTORY INSTALLED JUMPER.

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

1

ECONOMIZER



5

3 WHEN USING BATTERIES, THE 24V COMMON CONNECTION

IS OPTIONAL.

4 "O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"

IN THE INSTALLER SETUP.

5 OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR.

WIRES MUST HAVE A CABLE SEPARATE FROM THE

THERMOSTAT CABLE.

M23018

Fig. 13. Typical hookup of single-stage heat pump with no auxiliary heat (1H/1C).

L1

(HOT)

4 O/B

RC

R

C

G

Y

2

3

L2

1

24 VAC

4

C

G

Y

O/B

RC

R

2

W1

Y2

A

S1

S2

FAN RELAY

CHANGEOVER VALVE

COMPRESSOR 1 COMPRESSOR 2

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

5

ECONOMIZER

2

3





IS OPTIONAL.





THERMOSTAT CABLE.

M23019

Fig. 14. Typical hookup of multistage heat pump with no auxiliary heat (2H/2C).

L1

(HOT)

L2

1

24 VAC

4

C

G

Y

O/B

RC

R

2

CHANGEOVER VALVE


FAN RELAY

ECONOMIZER

3

W1

Y2

A

S1

S2

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

5

AUXILIARY HEAT RELAY



2

3



IS OPTIONAL.





THERMOSTAT CABLE.

M23020

Fig. 15. Typical hookup of single-stage heat pump with auxiliary heat (2H/1C).

L2

1

24 VAC

4

C

G

Y

O/B

RC

R

2

3

W1

Y2

A

S1

S2

CHANGEOVER VALVE

COMPRESSOR 1

FAN RELAY

OUTDOOR/INDOOR

TEMPERATURE

SENSOR

5

AUXILIARY HEAT RELAY

COMPRESSOR 2

ECONOMIZER

2

3





IS OPTIONAL.

4

5

"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"


OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR.


THERMOSTAT CABLE.

M23021

Fig. 16. Typical hookup of multistage heat pump with auxiliary heat (3H/2C).

62-0221—05 6


Sensor Wiring for Temperature

Averaging

S1

SUBBASE

S2

TR21

SUBBASE

S1 S2

TR21

T T T T

TR21

T T T4

1

TR21-A

T3

TR21

T T

TR21 TR21

T T T T

M27481

Fig. 17. Wiring four T7770A1006 (20K ohm) Sensors.

S1

SUBBASE

S2

1 THE TR21-A IS A 10K OHM SENSOR.

M27483

Fig. 19. Wiring two TR21 (20K ohm) Sensors and one

TR21-A (10K ohm) sensor to provide a temperature averaging network

S1

SUBBASE

S2

1

C7189 C7189

T4 T3 T4 T3

C7189 C7189

1

TR21-A

1

TR21-A

1 THE TR21-A IS A 10K OHM SENSOR.

M27482

Fig. 18. Wiring two TR21-A (10K ohm) Sensors to provide a temperature averaging network.

1 WIRES MUST HAVE A CABLE SEPARATE

FROM THE THERMOSTAT CABLE.

M23027

Fig. 20. Wiring four C7189U (10K ohm) Sensors to provide a temperature averaging network.

7 62-0221—05


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).

REMOVE

TAB

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.

BATTERIES (2) BATTERY HOLDER

M22260

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.

WALL

M22259

BACK OF THERMOSTAT

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. 23. Mount thermostat to wallplate.

M23024

62-0221—05 8

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 the Installer Setup Numbers, Settings, and Tests section.

YEAR

MONTH

DAY

UP AND DOWN BUTTONS

CHANGES MONTH, DAY,

YEAR AND TIME

Tue

PM

Done

GO BACK BUTTON

GOES BACK TO

LAST SETTING

DONE BUTTON

ADVANCES TO TIME SETTING

SCREEN AND HOME SCREEN

NEXT BUTTON

ADVANCE TO NEXT SETTING

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

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

9 62-0221—05


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.

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.

Installer System Tests

Use the Installer System Test section to test the heating, cooling and fan. Refer to the latter portion of Table 4.

Table 4. Installer Setup Menu.

Installer

Setup

Number

0120

0130

0140

0150

0160

Installer Setup

Name

Default

Setting

Date (Year Upper) 20

All Settings

20—20xx

21—21xx

Date (Year Lower) 04 00-99

Date (Month)

Date (Day)

Schedule Options

6

15

4

1-12

1-31 (Month Dependent)

0170

0175

0180

System Selection

TOD/Economizer output (terminal A)

8

0

Heat Fan Operation 0

0—Non-Programmable

4—Programmable

1—1H/1C Conv

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—Unused

1—TOD

2—Economizer

0—System controls fan

1—Thermostat controls fan (ON during call for heat)

0185

0190

0220

0230

Pre-occupancy

Purge Duration

Reversing Valve

O/B

Cycles Per Hour

(CPH) for first stage compressor

CPH for second stage compressor

0

0

3

3

0—no duration

1—one hour

2—two hours

3—three hours

0—O (O/B On Cool)

1—B (O/B On Heat)

1-6

1-6

Notes

Available year range: 2001 - 2178

Available year range: 2001 - 2178

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 (ISU 0170) and fan capability 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.

Only shown if thermostat is programmable (ISU

0160).

Pre-occupancy purge enabled by nonzero duration

(and sends economizer to minimum position).

Only shown with heat pump system selected.

Only shown for system with cool stages (ISU

0170). Selection in this stage changes second stage cool default CPH.

Only shown for system with two stages of cool

(ISU 0170).

62-0221—05 10


Table 4. Installer Setup Menu. (Continued)

Installer

Setup

Number

0240

Installer Setup

Name

CPH for first stage conventional heat

Default

Setting

5 1-12

All Settings

0250

0260

0270

0280

0300

0310

CPH for second stage conventional heat

CPH for Auxiliary

Heat

Continuous

Backlight

Changeover

Deadband

9

CPH for third Stage

Heat

9

9

0

1

3°F

(2°C)

1-12

1-12

1-12

0—No

1—Yes

Notes

Only shown for conventional system with heat stages (ISU 0170).

Selection in this stage changes default CPH of second stage heat.

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

(ISU 0170).

Only shown for 3H/2C heat pump system (ISU

0170).

Only shown for multi-stage heat pump system with more heat than cool stages (ISU 0170).

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

Only shown for system with both heat and cool stages (ISU 0170).

Only shown for Auto Changeover system (ISU

0300).

0320

0330

0340

0350

0360

0535

0540

0580

Temperature

Indication Scale

Daylight Saving

Remote

Temperature

Sensor

Heat Pump

Compressor

Lockout

Heat Pump

Auxiliary Lockout

Temporary

Occupied Duration

Limit

3

Number of Periods 4

Minimum

Compressor Off

Time

0

2

0

0

0

5

0—Manual

1—Auto

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)

0—°F

1—°C

0—Disabled

1—Enabled (US 1987)

2—Enable (US 2007)

3—Enabled (Europe)

0—None

1—Outdoor for Display

2—Outdoor for Control

3—Remote 10K Indoor

4—Remote 20K Indoor

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—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)

0—no duration

1—one hour

2—two hours

3—three hours

4—four hours

2—2 Periods

4—4 Periods

0—Off

2—2 minutes

3—3 minutes

4—4 minutes

5—5 minutes

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 (ISU 0170) and remote outdoor control sensor (ISU 0340 is 2).

Must enforce a dead band between this and

Auxiliary Lockout.

Only shown for heat pump systems with more heat stages than cool (ISU 0170) and remote outdoor control sensor (ISU 0340 at 2).

Must enforce a dead band between this and Heat

Pump Compressor Lockout.

0 means no limit.

Does not appear if Non-programmable is chosen

(ISU 0160).

Applies to all days of the week.

Only shown if system has cool stages (ISU 0170).

11 62-0221—05


Table 4. Installer Setup Menu. (Continued)

Installer

Setup

Number

0600

0610

0640

Installer Setup

Name

Heat Temperature

Range Stops

Cool Temperature

Range Stops

Clock Format

Default

Setting

90

All Settings

40 to 90°F (4 to 32°C)

50

12

50 to 99°F (10 to 37°C)

Notes

Only shown if system has heat stages (ISU 0170).


0650

0660

0670

0680

0685

0690

0695

0700

0710

Extended Fan-on time Heat

Extended Fan-on time Cool

Keypad Lockout

Temperature

Control Heat

Recovery Heat

Ramp Rate

Temperature

Control Cool

Recovery Cool

Ramp Rate

Temperature

Display Offset

Restore Factory

Defaults

0

0

0

2

5

2

3

0

0

12—12 Hour

24—24 Hour

0—Off

90—90 seconds

0—Off

40—40 seconds

0—Unlocked

1—Partial Lockout 1

2—Partial Lockout 2

3—Fully Locked

1—Less Aggressive

2—Standard

3—More Aggressive

0-20°F/hour

1—Less Aggressive

2—Standard

3—More Aggressive

0-20°F/hour

-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—No

1—Yes

Not displayed with cool-only systems (ISU 0170) or with fan set to system control (ISU 0180 at 0).

Only shown for systems with cool stages (see ISU

0170).

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 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).


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 (see Table 5).

Retains only calendar settings and time.

INSTALLER TESTS

Test 1 Installer Test

Cool

0

Test 2

Test 3

Test 4

Test 8

Installer Test

Fan

Installer Test

Heat

Installer Test

Auxiliary Heat

Installer Test

TOD/Economizer

0

0

0

0

0—Off

1—Cool Stage 1

2—Cool Stage 2

0—Off

1—Fan On

0—Off

1—Heat Stage 1

2—Heat Stage 1 and 2

3—Heat Stage 1,2 and 3

0—Auxiliary Heat Off

1—Auxiliary Heat On

0—TOD/Economizer Off

1—TOD/Economizer On

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

62-0221—05 12


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.

Table 5. Default Program Settings.

Schedule

Period

Occ1

Unocc1

Occ2

Unocc2

Setpoints

Time

8:00am

Heat

70°F

(21°C)

10:00pm 55°F

(10°C)

1:00pm 70°F

(21°C)

12:00pm

(Noon)

55°F

(10°C)

Cool

75°F

(25.5°C)

85°F

(24°C)

75°F

(25.5°C)

85°F

(24°C)

Fan

Setting

On

Auto

On

Auto

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 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.”

— 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

Occupied

Call for

Cool

—

Unoccupied Yes

No

Override —

Terminal A

Economizer TOD

Energized Energized

Energized De-energized

De-energized De-energized

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.

50

COMPRESSOR ONLY

AUXILIARY

LOCKOUT

TEMPERATURE

BOTH COMPRESSOR AND

AUXILIARY HEAT

35

AUXILIARY ONLY

COMPRESSOR

LOCKOUT

TEMPERATURE

M19950

Fig. 25. Heat Pump Operation with Lockout

Temperatures Set.

13 62-0221—05


TROUBLESHOOTING (TABLE 7)

Symptom

Display does not come on.

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).

Table 7. Troubleshooting.

Possible Cause

Thermostat is not being powered.

The upper or lower temperature limits were reached.

The keypad is fully locked.

Thermostat minimum off-time is activated.

System selection not set to Heat or

Cool.

System type Selection is incorrect.

Action

Check for 24 Vac between C and RC.

Check that AA batteries are installed correctly and are good.

Check temperature setpoints.

Check Installer Setup Numbers 0600 and

0610; modify as needed.

Check Installer Setup Number 0670 to change keypad locked options.

Wait up to five minutes for the system to respond.

Set system Selection to correct position.

Heating or cooling equipment is not operating.

Heating equipment failure.

Check Installer Setup Number 0170 and 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.

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.

Loose or broken wire connection between thermostat and heating equipment.

Heat pump puts out cool air in the heat mode and warm air in the cool mode.

Changeover Valve (Installer Setup

Number 0190) is not configured 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.

Heating and cooling wires are shorted together.

Cooling does not turn on (Cool

On is solid in the display).

Cooling 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.

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.

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.

Loose or broken wire connection between thermostat and cooling equipment.

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.

62-0221—05 14


Table 7. Troubleshooting. (Continued)

Symptom

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

Heating equipment is running in the cool mode.

Possible Cause

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 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.

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.

Action

Set Fan Control in Heating to Electric

Furnace (Setting 0180).







Cannot set the system setting to Cool.

System Type (Installer Setup Number

0170) is set to Heat Only or Heat Only with Fan.



Heat On is not in the display.

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

Set 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.

Set 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 turn on.

15 62-0221—05


SPECIFICATIONS

Electrical Ratings:

Terminal

W (Heating)

Y (Cooling)

Voltage

(50/60 Hz)

20 - 30 Vac

20 - 30 Vac

G (Fan) 20 - 30 Vac

A (Economizer/TOD) 20 - 30 Vac

Running

Current

0.02 - 1.0A

0.02 - 1.0A

0.02 - 0.60A

0.02 - 1.0A

Thermostat Dimensions: 3-3/4 in. (95 mm) high x 6 in.

(152 mm) wide x 1-3/8 in. (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.

TR21 Wall-Mount Remote Indoor Sensor:

20K ohm NTC.

TR21-A Wall-Mount Remote Indoor Sensor:

10K ohm NTC.

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%.

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.

1985 Douglas Drive North

Golden Valley, MN 55422

Honeywell Limited-Honeywell Limitée

35 Dynamic Drive

Toronto, Ontario M1V 4Z9 customer.honeywell.com

® U.S. Registered Trademark

© 2010 Honeywell International Inc.

62-0221—05 E.K. Rev. 04-10

Printed in U.S.A.

TB7220U Installation Instructions

TB7220U

CommercialPRO™

Programmable Thermostat

INSTALLATION INSTRUCTIONS

APPLICATION

MERCURY NOTICE

INSTALLATION

CAUTION

When Installing this Product...

Select Thermostat Location

Separate Wallplate from

Thermostat

Install Wallplate (See Fig. 3)

WIRING

Terminal “A” Wiring Details for

Economizers

Conventional System Wiring

Heat Pump System Wiring

Sensor Wiring for Temperature

Averaging

POWER THE THERMOSTAT

Wiring 24 Vac Common

Installing Batteries

Mount Thermostat to Wallplate

SETTING CALENDAR AND TIME

ADVANCED SETTINGS

INSTALLER SETUP NUMBERS, SETTINGS, AND TESTS (TABLE 4)

Configure Installer Setup

CAUTION

Installer System Tests

OPERATION

System Settings

Fan Settings

Minimum-Off Timer

(Compressor Protection)

Outdoor or Indoor Temperature

Sensor

Economizer/TOD Logic (Table 6)

Heat Pump Temperature Lockouts

Dual Fuel Heat Pump and Outdoor

Sensor

Heat Pump with Auxiliary (Backup) Heat and Outdoor Temperature Sensor

Operation in Heat Mode

TROUBLESHOOTING (TABLE 7)

SPECIFICATIONS

Perchlorate Material

Related manuals

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Thermostat 8000

Honeywell Home

Thermostat TH5110D

Honeywell

COMMERCIALPRO TB7220

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