🔥 TL8100A1008 HONEYWELL HOME PROGRAMMABLE LINE VOLT THERMOSTAT WITH BACKLIT DISPLAY
🧭 Product Overview
The Honeywell TL8100A1008 is a programmable line voltage thermostat designed for residential and light commercial hydronic systems. It offers a 7-day programmable schedule and backlit display, providing precise control of heating applications. Compatible with Aube CT240-02 telephone controllers, this thermostat can control 2-way and 3-way zone valves or circulator pumps for energy-efficient operation.
⚠️ Notes
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Power: Operates using 2 AA (LR6) batteries (included)
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Mounting: Vertical installation required
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Programmability: 7-day schedule allows flexible heating management
⚙️ Key Features
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🌡️ Accurate Temperature Control: Thermistor sensor with ±1°F accuracy
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📆 7-Day Programmable: Customize schedules for each day of the week
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🔌 Versatile Electrical Ratings: Works with 24 Vdc, 30 Vdc, 120 Vac, 240 Vac; compatible with millivolt systems
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⚙️ Controls: 1-stage heat for 2-way or 3-way valves and circulator pumps
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🖥️ Backlit Display: Easy-to-read display for all lighting conditions
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💧 Humidity Range: 0% to 95% RH non-condensing
⚙️ Technical Specifications
| Specification | Details |
|---|
| Manufacturer |
Honeywell |
| Model |
TL8100A1008 |
| Mounting |
Vertical |
| Stages |
1 Heat |
| Electrical Connections |
Screw terminals |
| Max Load |
5 A (resistive), 2 A (inductive) |
| Supply Voltage |
24 Vdc; 30 Vdc; 120 Vac; 240 Vac |
| Millivolt System Compatible |
Yes |
| Operating Temperature |
32°F to 122°F |
| Operating Humidity |
0% to 95% RH, non-condensing |
| Power Method |
2 AA (LR6) Batteries (included) |
| Sensor Element |
Thermistor |
| Accuracy |
±1°F |
| Differential |
0.1°F |
| Temperature Range |
40°F to 85°F |
| Programmability |
7-Day Schedule |
⚠️ Common Symptoms / When to Replace
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🔄 Thermostat fails to maintain programmed temperature
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🕑 Display backlight not functioning
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⚠️ Circulator pump or valve fails to respond
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🛠️ Batteries depleted or not recognized
❓ Frequently Asked Questions (FAQ)
Q: What type of systems is this thermostat compatible with?
A: Works with line voltage hydronic systems, including 2-way and 3-way zone valves or circulator pumps.
Q: Can I use this with low-voltage or millivolt systems?
A: ✅ Compatible with millivolt systems and standard 24 Vdc, 30 Vdc, 120 Vac, 240 Vac systems.
Q: How is the thermostat powered?
A: Uses 2 AA (LR6) batteries, included in the package.
Q: What is the temperature range I can set?
A: 40°F to 85°F, with 0.1°F differential for precise control.
Q: Does it support daily programming?
A: ✅ Yes, a 7-day programmable schedule is included for energy efficiency.
🛒 Shopping Tips
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✅ Verify compatibility with your hydronic system (2-way or 3-way valves)
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🔋 Batteries are included; keep spare AA batteries for long-term operation
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🌡️ Check the mounting location: vertical installation recommended for optimal accuracy
