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TB7220 Ultrastat
Programmable Thermostat
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.
The TB7220 provides temperature control for gas, oil, electric
and heat pumps for up to 2 heat, 2 cool systems.
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
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.
Application ........................................................................
Specifications ...................................................................
Ordering Information ........................................................
Installation ........................................................................
Wiring ...............................................................................
Installer Setup .................................................................. 12
Operation .......................................................................... 17
Troubleshooting (Table 10) ............................................... 22
PRODUCT DATA
Contents
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63-2636-03
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Summary of Contents for Honeywell TB7220
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Page 1: Table Of Contents
• Armchair programming allows you to remove the universal system compatibility, precise comfort control and is thermostat from the wall for programming. easy-to-program. The TB7220 provides temperature control for gas, oil, electric and heat pumps for up to 2 heat, 2 cool systems. Contents Application ................ -
Page 2: Specifications
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... - Page 3 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Calibration (TB7220, C7089U, C7189U, T7770A): No field calibration required. Mounting Means: TB7220: Direct wall-mount using mounting screws and anchors provided. Fits standard vertical or horizontal LEVEL 2 in. x 4 in. junction box. LEVEL C7089U: Mounts outside of living space with mounting clip and 6-7/8 IN.
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Page 4: Installation
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT CAUTION Electrical Shock or Equipment Damage Hazard. KNOCKOUTS FOR EUROPEAN APPLICATIONS Can shock individuals or short equipment circuitry. Disconnect power supply before installation. 2-3/8 (60) Select Thermostat Location STANDARD UTILITY 5-1/16 Select a location for the thermostat about 5 ft (1.5m) above the... -
Page 5: Wiring
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Install Wallplate (See Fig. 8) NOTES: — Refer to Table 5 for terminal designation Mount the thermostat horizontally on the wall: descriptions. 1. Pull the wires through the wire hole on the wallplate. — See Fig. 12 through 21 for wiring diagrams for 2. - Page 6 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Table 5. Terminal Designation Descriptions. WALLPLATE Terminal WIRE Designation Description Power for cooling—connect to secondary side (see Note 1) of cooling system transformer. Power for heating—connect to secondary side (see Note 1) of heating system transformer.
- Page 7 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Conventional System Wiring (HOT) (HOT) 24 VAC 24 VAC HEAT RELAY OUTDOOR/INDOOR HEAT RELAY TEMPERATURE COMPRESSOR CONTACTOR OUTDOOR/INDOOR SENSOR TEMPERATURE SENSOR FAN RELAY POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD FACTORY INSTALLED JUMPER.
- Page 8 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT (HOT) (HOT) 24 VAC 24 VAC COOLING TRANSFORMER FAN RELAY OUTDOOR/INDOOR OUTDOOR/INDOOR TEMPERATURE COOL RELAY 1 COOL RELAY 2 TEMPERATURE SENSOR SENSOR COOL RELAY 1 COOL RELAY 2 HEAT RELAY 2 FAN RELAY HEAT RELAY 2...
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Page 9: Power The Thermostat
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT POWER THE THERMOSTAT (HOT) You can choose from three methods to power the thermostat: 24 VAC • Batteries only (AAA alkaline). • 24 Vac direct connection only. • 24 Vac direct connection with battery backup (AAA alkaline). - Page 10 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Locate and Mount C7089U Outdoor Wire C7089U Outdoor Sensor Temperature Sensor (Optional) Mount the sensor where (see Fig. 24): CAUTION • cannot tamper with settings. • there is good air circulation. Electrical Interference (Noise) Hazard. • it can measure true outdoor ambient temperature.
- Page 11 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Wire Indoor Sensor SUBBASE CAUTION T7770A1006 Electrical Interference (Noise) Hazard. Can cause erratic system operation. Keep wiring at least one foot away from large inductive loads such as motors, line starters, lighting ballasts and large power distribution panels.
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Page 12: Installer Setup
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT 3. The Setup Number displays to the center of the screen. MONTH YEAR UP AND DOWN It is a four-digit code beginning with zero. The current BUTTONS setting is displayed to the right. CHANGES MONTH, DAY AND... - Page 13 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT INSTALLER SETUP NUMBERS (ISU), SETTINGS, AND TESTS (TABLE 6) Use the Installer System Test to test the heating, cooling and IMPORTANT fan. Refer to the latter portion of Table 6. Use Installer System Test to test heating, cooling and fan.
- Page 14 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Table 6. Installer Setup Menu. (Continued) Installer Setup Installer Setup Default Number Name Setting All Settings Notes 0270 CPH for Auxiliary 1-12 Only shown if multi-stage heat pump is selected (heat Heat pump with more heat than cool stages).
- Page 15 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Table 6. Installer Setup Menu. (Continued) Installer Setup Installer Setup Default Number Name Setting All Settings Notes Clock Format 12—12 Hour 0640 24—24 Hour 0650 Extended Fan 0—Off Not displayed with fan set to fossil or with cool-only On time Heat 90—90 seconds...
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Page 16: Main Screen
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT MAIN SCREEN PROGRAMMING Table 7 shows default program settings. DOWN BUTTON Table 7. Energy-saving Default Program Settings. LOWERS TEMPERATURE SETTING OR MAKES SELECTIONS IN OTHER SCREENS Setpoints Schedule UP ARROW BUTTON Period Time Heat Cool RAISES TEMPERATURE SETTING OR... -
Page 17: Operation
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT OPERATION Setting Temperature Overrides There are three temperature override options: — Hold Temperature Until — Override, and — Holiday. Select Day HOLD TEMPERATURE UNTIL Next Step Cancel Holds the temperature temporarily until the time set by the user, or the next scheduled period time. - Page 18 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT NOTES: — If batteries are not replaced when the Low Battery WALLPLATE TERMINAL SCREW BLOCK warning is flashing, the LO batt screen displays continuously and the thermostat stops operating until batteries are replaced. — The thermostat has a low battery indicator.
- Page 19 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Partially Locked Screen Minimum-Off Timer Compressor Protection When partially locked: The thermostat has an adjustable Minimum-Off Timer that can — Pressing a locked key prompts the screen to indicate be set from zero to five minutes (Factory Setting—five SCREEN LOCKED for five to seven seconds.
- Page 20 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Table 9. Sequence of Operation for Heat Pump Systems. System Energize Screen COMPRESSOR ONLY Setting Setting Call for Action Terminals Message AUXILIARY LOCKOUT Auto — — TEMPERATURE BOTH COMPRESSOR AND Cool AUXILIARY HEAT COMPRESSOR Cool Auto...
- Page 21 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT T7770A Remote Temperature Sensor To verify sensor resistance, remove one wire from one of the C7089U 60-in. leadwires. Use an ohmmeter to measure the resistance across the sensor. Then compare sensor accuracy Operation with the temperature/resistance curve in Fig. 42.
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Page 22: Troubleshooting (Table 10)
TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT TROUBLESHOOTING (TABLE 10) Table 10. 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. - Page 23 TB7220 ULTRASTAT PROGRAMMABLE THERMOSTAT Table 10. Troubleshooting. (Continued) Symptom Possible Cause Action Heating equipment is running in Heating equipment is not a heat pump but Set System Type (ISU 0170) to match the the cool mode. System Type (ISU 0170) is set to Heat installed heating and/or cooling equipment.
- Page 24 TB7220 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 © 2011 Honeywell International Inc. 63-2636—03...