LineVoltPro Digital, Programmable, Electric Heat Thermostat, TL8230A1003

The Honeywell TL8230A1003 LineVoltPro 8000 thermostat delivers precision temperature control for 208V and 240V electric baseboard heaters, radiant ceiling heat, convectors, and fan-forced heaters. This programmable line voltage thermostat features 7-day scheduling that helps reduce annual heating costs by up to 10 percent when used as directed. Designed for residential and light commercial electric heating applications, it combines electronic accuracy within plus or minus 1 degree Fahrenheit with a user-friendly digital interface. The double-pole (DPST) design provides safe, complete circuit isolation for line voltage electric heating systems.

• 7-Day Programming: Set unique temperature schedules for each day of the week with four programmable time periods daily, allowing you to heat only when and where you need it for maximum energy savings.
• Electronic Temperature Control: Maintains accuracy within plus or minus 1 degree Fahrenheit, eliminating the temperature swings common with mechanical thermostats and keeping your space consistently comfortable.
• On-Demand Backlight Display: Large, clear digital screen lights up when you press a button, making it easy to read in any lighting condition from dim hallways to bright rooms.
• Early Start Function: Calculates when to activate heating so your programmed temperature is reached exactly when scheduled, ensuring comfort the moment you need it.
• Soundproofed Operation: Reduces the clicking noise commonly heard with conventional line voltage thermostats, providing quieter operation in bedrooms and living spaces.
• Heating Indicator Light: At-a-glance confirmation shows when the heating system is actively running, so you always know your system status.
• On/Off Switch: Built-in switch lets you turn the thermostat completely off at the end of the heating season, preventing accidental activation during warmer months.
• Double Pole Design: DPST switch configuration breaks both hot legs of 208V or 240V circuits for complete electrical isolation and enhanced safety.

The TL8230A1003 is designed for line voltage electric heating systems operating at 208V or 240V AC, 50/60 Hz. It controls resistive-rated electric baseboard heaters, radiant ceiling heating panels, convectors, and fan-forced heaters. The thermostat is rated for 15 amps at 208V (3120 watts) or 15 amps at 240V (3600 watts). It requires hardwired installation and mounts vertically on a standard electrical box. The unit uses 5.5-inch tinned copper leadwires for connection and does not require batteries.

The thermostat mounts vertically in a standard electrical box using the included hardware. Installation requires connecting the line voltage power supply wires to the line terminals and the heating load wires to the load terminals, following the double-pole wiring configuration shown in the installation instructions. The unit measures 4 7/8 inches high by 2 3/4 inches wide by 7/8 inch deep. Consult the installation manual for detailed wiring diagrams and safety precautions before beginning installation.

• Voltage: 208V or 240V AC, line voltage
• Frequency: 50 Hz or 60 Hz
• Amperage: 15 amps at 208V, 15 amps at 240V
• Wattage: 3120W at 208V, 3600W at 240V
• Temperature Range: 40°F to 86°F
• Accuracy: Plus or minus 1°F
• Switch Type: DPST (double pole, single throw)
• Wiring: 5.5-inch tinned copper leadwires
• Mounting: Vertical, standard electrical box
• Dimensions: 4 7/8 inches H x 2 3/4 inches W x 7/8 inch D
• Color: Premier White
• Interface: Push button
• Display: Large backlit digital screen

A: Yes, the TL8230A1003 offers true 7-day programming, allowing you to set a unique schedule for each individual day. Unlike 5-2 day programmable models, this thermostat lets you program Saturday differently from Sunday or any weekday differently from another. Each day supports up to four separate time periods with different temperature setpoints.

A: No, the TL8230A1003 is hardwired directly to your line voltage electric heating system and does not require batteries. It draws power from the 208V or 240V electrical circuit, so it remains operational as long as the circuit breaker is on.