1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Cadet T521-W 5280W Single Pole Thermostat. Please read this manual thoroughly before installation and use to ensure safe and efficient operation.
Figure 1: Front view of the Cadet T521-W Single Pole Thermostat. It is white with a prominent circular dial in the center, marked with temperature settings from 50 to 90 degrees Fahrenheit. The dial allows for manual temperature control.
2. Important Safety Information
WARNING: Risk of electric shock. Installation must be performed by a qualified electrician in accordance with all local and national electrical codes. Disconnect power at the main service panel before installing or servicing this thermostat.
- Always turn off power at the circuit breaker or fuse box before installation or maintenance.
- Ensure all wiring connections are secure and properly insulated.
- Do not use this thermostat with heating systems exceeding its specified voltage and wattage ratings.
- This thermostat is designed for use with electric baseboard heaters and wall heaters.
- Keep the thermostat dry and away from sources of moisture.
3. Package Contents
Verify that all items are present before beginning installation:
- Cadet T521-W Single Pole Thermostat (1 unit)
- Mounting Screws (quantity may vary)
- Instruction Manual (this document)
4. Product Specifications
| Feature | Specification |
|---|---|
| Model | T521-W |
| Brand | Cadet |
| Color | White |
| Voltage Rating | 120/240 Volts |
| Maximum Wattage Controlled | 5280W |
| Amperage | 22 Amps |
| Thermostat Type | Heating, Single Pole |
| Controller Type | Dial |
| Temperature Control Type | Manual |
| Connectivity Technology | Wired |
| Power Source | Corded Electric |
| Mounting Type | Wall Mount |
| Material | Plastic |
| Display Type | Analog |
| Product Dimensions | 3 x 6.7 x 9.1 inches |
| Item Weight | 0.16 ounces (approx. 0.01 lbs) |
| UPC | 027418083005 |
5. Installation and Setup
Before you begin: Ensure power to the heating circuit is OFF at the main electrical panel. Failure to do so may result in electric shock or damage to the thermostat and heating system.
5.1 Tools Required
- Screwdriver (Phillips or flathead, depending on screw type)
- Wire strippers
- Electrical tape (optional, for insulation)
- Voltage tester
5.2 Mounting Location
Install the thermostat on an interior wall, approximately 5 feet (1.5 meters) above the floor. Avoid locations near heat sources (e.g., lamps, direct sunlight, fireplaces), cold drafts (e.g., windows, doors), or areas with poor air circulation.
5.3 Wiring Instructions (Single Pole)
- Turn off power: Locate the circuit breaker controlling your heating system and switch it to the OFF position. Verify power is off using a voltage tester.
- Remove old thermostat (if applicable): Carefully remove the old thermostat from the wall box. Disconnect the wires, noting which wire was connected to which terminal.
- Connect new thermostat: The Cadet T521-W is a single pole thermostat. It has two wires for connection.
- Connect one thermostat wire to the incoming power wire from the electrical panel.
- Connect the other thermostat wire to the wire leading to your electric heater.
- Mount the thermostat: Gently push excess wire back into the wall box. Secure the thermostat to the wall box using the provided mounting screws.
- Restore power: Once the thermostat is securely mounted and all connections are checked, turn the power back ON at the main electrical panel.
6. Operating Instructions
The Cadet T521-W thermostat features a simple manual dial for temperature control.
- Adjusting Temperature: Rotate the central dial clockwise to increase the desired temperature or counter-clockwise to decrease it. The dial is marked in degrees Fahrenheit (50°F to 90°F).
- Heating Indicator: This thermostat does not have a separate heating indicator light. The heating system will activate when the room temperature falls below the set temperature and deactivate when it reaches the set temperature.
- Turning Off: To turn off the heating system completely via the thermostat, rotate the dial to its lowest setting (typically "OFF" or below 50°F, depending on the specific dial markings). For complete power disconnection, turn off the circuit breaker.
7. Maintenance
The Cadet T521-W thermostat requires minimal maintenance.
- Cleaning: Periodically wipe the exterior of the thermostat with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure no liquid enters the thermostat housing.
- Airflow: Ensure that the vents at the bottom of the thermostat are not obstructed, as these are necessary for proper temperature sensing.
- No User-Serviceable Parts: There are no user-serviceable parts inside the thermostat. Do not attempt to open or repair the unit.
8. Troubleshooting
If you experience issues with your thermostat, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Heater not turning on. |
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| Heater not turning off. |
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| Inaccurate temperature reading/control. |
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If troubleshooting steps do not resolve the issue, contact Cadet customer support or a qualified electrician.
9. Warranty Information
Cadet products are manufactured to high-quality standards. For specific warranty details regarding your T521-W thermostat, please refer to the warranty card included with your purchase or visit the official Cadet website. Keep your purchase receipt as proof of purchase for warranty claims.
10. Customer Support
For technical assistance, replacement parts, or further information, please contact Cadet customer support:
- Website: www.cadetheat.com
- Phone: Refer to the manufacturer's website or product packaging for current contact numbers.
When contacting support, please have your model number (T521-W) and purchase date available.
