1. Important Safety Information
WARNING: All electric connections must be made by a qualified electrician, according to the electric and building codes effective in your region. Do NOT connect this product to a supply source other than 120 VAC to 240 VAC, and do not exceed the load limits specified. Failure to follow these instructions may result in electric shock, fire, or property damage.
Always disconnect power at the main circuit breaker before installing or performing any maintenance on the thermostat.
2. Product Overview
The Stelpro ST302P is a programmable electronic thermostat designed for precise temperature control of baseboards and convectors. It offers advanced programming capabilities and energy-efficient operation.
- Advanced Programming: Features 5/2 programming, allowing distinct temperature settings for weekdays and weekends.
- Precise Control: Maintains ambient temperature within ±0.5°C (1°F) increments for consistent comfort.
- Wide Temperature Range: Adjustable from 5°C to 30°C (41°F to 86°F).
- Enhanced Safety: Equipped with a sealed, secure casing and clipped TRIAC switches for safer operation.
- Versatile Compatibility: Supports 1500 W / 2600 W / 3000 W loads, compatible with 120 V, 208 V, and 240 V systems.
Figure 2.1: Front view of the Stelpro ST302P Programmable Electronic Thermostat.
Figure 2.2: Overview of Stelpro programmable electronic thermostats, highlighting compatibility with baseboards and convectors.
3. Setup and Installation
Installation of the Stelpro ST302P thermostat should be performed by a qualified electrician to ensure compliance with local electrical and building codes. The thermostat is designed for a 2-wire installation and includes necessary hardware and wire nuts.
3.1 Mounting
The thermostat features a robust wall mount design. Ensure the mounting location is away from direct sunlight, drafts, or heat sources that could affect temperature readings.
Figure 3.1: Dimensions of the Stelpro ST302P thermostat for installation planning.
3.2 Electrical Connections
Refer to the wiring diagram provided in the packaging for specific connection instructions. Ensure the power supply matches the thermostat's requirements (120 V, 208 V, or 240 V) and that the load does not exceed 3000 W.
Note: Disconnect power at the circuit breaker before beginning any wiring work.
4. Operating Instructions
The ST302P thermostat features touch controls for easy temperature adjustment and programming.
Figure 4.1: User adjusting temperature using the touch controls on the Stelpro ST302P thermostat.
4.1 Manual Temperature Adjustment
Use the left and right arrow touch controls on the faceplate to manually decrease or increase the desired temperature setpoint. The display will show the current temperature and the setpoint.
Figure 4.2: Close-up of the thermostat display showing the current temperature and heating indicator.
4.2 Programming Schedule (5/2 Day)
The thermostat allows for 5/2 day programming, meaning you can set different schedules for weekdays (Monday-Friday) and weekends (Saturday-Sunday). Each day can have multiple programming periods (e.g., Wake, Leave, Return, Sleep) to optimize energy savings and comfort.
- Press and hold the center button to enter programming mode.
- Use the arrow buttons to navigate through the settings (Day, Time, Program Period, Temperature Setpoint).
- Adjust values using the arrow buttons and confirm with the center button.
- Repeat for all desired programming periods for weekdays and weekends.
Refer to the full instruction manual included in the product packaging for detailed programming steps.
4.3 ECO Mode
This model may include an ECO mode, which uses a slightly lower setback temperature when you are sleeping or away to help save energy. Consult your full manual for activation and adjustment of this feature.
5. Maintenance
The Stelpro ST302P thermostat requires minimal maintenance.
- Cleaning: Gently wipe the thermostat's surface with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Inspection: Periodically check for any loose connections or signs of damage. If any issues are found, contact a qualified electrician.
Ensure the thermostat's vents (if any) are not obstructed to allow for accurate temperature sensing.
6. Troubleshooting
If you encounter issues with your Stelpro ST302P thermostat, consider the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Thermostat display is blank. | No power to the thermostat. | Check the circuit breaker for the heating system. Ensure it is in the ON position. |
| Heater not turning on/off as expected. | Incorrect temperature setting or programming. | Verify the setpoint temperature. Review programming schedule for accuracy. |
| Inaccurate temperature reading. | Thermostat exposed to drafts, direct sunlight, or heat sources. | Ensure the thermostat is installed in an optimal location, away from external influences. |
| Thermostat not responding to touch. | Temporary software glitch. | Turn off power to the thermostat at the circuit breaker for 5 minutes, then restore power. |
If the problem persists after attempting these solutions, contact Stelpro customer support or a qualified electrician.
7. Specifications
- Brand: Stelpro
- Model Number: ST302P
- Colour: White
- Product Dimensions: 9.4 x 13.41 x 3.81 cm (3.7 x 5.28 x 1.5 inches)
- Power/Wattage: 3000 W
- Voltage: 240 Volts (compatible with 120 V, 208 V, 240 V systems)
- Material: Plastic
- Special Features: Protection against power failure (two hours)
- Item Weight: 363 g (0.8 Pounds)
- UPC: 626296598924
- Temperature Range: 5°C to 30°C (41°F to 86°F)
- Temperature Control Accuracy: ±0.5°C (1°F)
8. Warranty and Support
The Stelpro ST302P Programmable Electronic Thermostat comes with a 3-year limited warranty from the date of purchase. This warranty covers defects in material and workmanship under normal use.
For warranty claims, technical support, or further assistance, please contact Stelpro customer service. You can find contact information on the official Stelpro website or in the product packaging.
Manufacturer: Stelpro
Figure 8.1: Stelpro products are proudly made in Canada.
