Product Overview
The Dayton 3UH07 is a single pole wall thermostat designed for controlling electric baseboard heaters. It features a mechanical selector dial for temperature adjustment and is compatible with 120V, 208V, 240V, and 277V AC systems. This thermostat is not programmable and provides reliable temperature regulation for your heating system.

An image showing the Dayton 3UH07 Wall Thermostat. It is white, rectangular, and features a large circular mechanical dial in the center for temperature adjustment, labeled 'LO' and 'HI' with 'COMFORT ZONE' above the dial. A small indicator light is visible below the dial.
What's in the Box
- Dayton 3UH07 Wall Thermostat
- Instruction Manual
- Wall Mount Hardware
Setup and Installation
Important Safety Information: Installation of this thermostat involves working with high voltage electricity. To avoid electrical shock or damage to the thermostat and heating system, installation should only be performed by a qualified electrician or a trained service technician. Always turn off power to the heating system at the main circuit breaker before beginning any installation or maintenance.
General Installation Steps:
- Power Disconnection: Ensure the power to the heating circuit is completely off at the main electrical panel.
- Mounting Location: Select an indoor wall location, approximately 5 feet (1.5 meters) above the floor, away from direct sunlight, drafts, heat sources, or cold spots that could affect temperature readings.
- Wiring: Follow the wiring diagram provided with the thermostat packaging. Connect the thermostat wires to the appropriate electrical supply and heater wires. This is a single pole thermostat, meaning it interrupts one side of the 120/208/240/277V AC line.
- Secure Thermostat: Mount the thermostat securely to the wall using the provided wall mount hardware.
- Restore Power: Once installation is complete and all connections are secure, restore power at the main circuit breaker.
Refer to the detailed wiring instructions included in the product packaging for specific connection diagrams and safety precautions.
Operating Instructions
The Dayton 3UH07 thermostat features a simple mechanical dial for temperature control. It is not a programmable thermostat.
Adjusting Temperature:
- To increase the desired temperature, rotate the central dial clockwise towards the 'HI' setting.
- To decrease the desired temperature, rotate the central dial counter-clockwise towards the 'LO' setting.
- The 'COMFORT ZONE' marking indicates a typical range for comfortable room temperatures.
The thermostat will automatically turn the heating system on or off to maintain the set temperature.
Maintenance
The Dayton 3UH07 thermostat requires minimal maintenance.
- Cleaning: Periodically wipe the exterior of the thermostat with a soft, damp cloth to remove dust and dirt. Do not use abrasive cleaners or solvents.
- Avoid Obstructions: Ensure that no furniture, curtains, or other objects block the airflow around the thermostat, as this can affect its ability to accurately sense room temperature.
No internal user-serviceable parts are present. Do not attempt to open the thermostat casing.
Troubleshooting
If you experience issues with your Dayton 3UH07 thermostat, consider the following common troubleshooting steps:
- No Heat:
- Check if the circuit breaker for the heating system is tripped. Reset if necessary.
- Ensure the thermostat dial is set to a temperature higher than the current room temperature.
- Verify that the heating system itself (e.g., baseboard heater) is receiving power and functioning correctly.
- Room Too Cold/Hot:
- Adjust the thermostat dial to your desired temperature.
- Check for drafts or heat sources near the thermostat that might be affecting its temperature reading.
- Thermostat Not Responding:
- Confirm that power is supplied to the thermostat.
- If the issue persists, professional inspection of the wiring may be required.
For persistent problems, it is recommended to contact a qualified electrician or HVAC technician.
Specifications
| Feature | Specification |
|---|---|
| Model Number | 3UH07 |
| Compatible System Type | Electric Baseboard Heaters |
| Number of Poles | 1 (Single Pole) |
| Voltage Rating | 120V AC, 208V AC, 240V AC, 277V AC |
| Current Rating | 18 A, 22 A (Contact Rating: 22A @ 120 to 277V AC) |
| Control Type | Mechanical Selector Dial |
| Programming Capability | Not Programmable |
| Mounting Type | Wall Mount |
| Housing Color | White |
| Overall Depth | 3 inches |
| Overall Height | 4 1/2 inches |
| Overall Width | 3 inches |
| Maximum Operating Temperature | 80 Degrees F |
| Certifications | UL Listed, CSA Certified |
Warranty Information
Specific warranty details for the Dayton 3UH07 Wall Thermostat are typically provided with the product packaging or available on the manufacturer's official website. Please refer to these resources for comprehensive warranty terms and conditions.
Support
For technical assistance, installation questions, or warranty claims, please contact Dayton customer support. Contact information can usually be found on the product packaging or the official Dayton website.
Manufacturer: Dayton





