Installing Your Sinope TH1124WF Smart Thermostat

What You'll Need

• Sinope TH1124WF Smart Thermostat
• Neviweb app (iOS or Android)
• 2.4GHz Wi-Fi network
• 240V electric heating system (baseboard or convector heaters)
• Wire strippers
• Wire nuts or push-in connectors
• Voltage tester

Before You Start

This is a line-voltage thermostat for 240V electric heating systems. The Sinope TH1124WF carries 240V power directly, controlling electric baseboard heaters and convectors. This is the most common voltage for electric baseboard heating in North America. Working with 240V wiring is inherently more dangerous than low-voltage thermostat work. If you are not experienced with electrical wiring, hire a licensed electrician for this installation.

Voltage Verification

Confirm your heating system is 240V before purchasing. A double-pole breaker in your electrical panel typically indicates 240V. Single-pole breakers are usually 120V, which requires the TH1123WF model instead. You can also check the spec plate on your baseboard heater for the rated voltage. Using the wrong voltage thermostat will damage the device and create a safety hazard.

Step-by-Step Installation

1. Turn off power at the breaker. For 240V circuits, switch off the double-pole breaker. Use a voltage tester on the thermostat wires to confirm there is no power before proceeding.
2. Remove the old thermostat. Document the wiring carefully. You will have LINE wires (from the breaker panel) and LOAD wires (going to the baseboard heater). On 240V circuits, both wires are "hot" -- there is no neutral.
3. Connect the wiring to the Sinope:
   • Connect LINE wires to the LINE terminals on the thermostat
   • Connect LOAD wires to the LOAD terminals
   • Follow the wiring diagram in the manual carefully
   • Double-check that LINE and LOAD are not reversed
4. Mount the thermostat to the electrical box with the included screws.
5. Restore power at the breaker.
6. Download the Neviweb app, create an account, and add the thermostat. Connect it to your 2.4GHz Wi-Fi network.

System Compatibility Notes

The TH1124WF is rated for 240V electric heating loads up to 3600W (15A at 240V). It works with resistive baseboard heaters and convectors. It does not work with 120V systems, forced-air furnaces, heat pumps, or 24V HVAC equipment. If you have multiple baseboard heaters on one circuit, make sure the total wattage does not exceed 3600W. For higher loads, use a relay or contactor.

Like the 120V model, the TH1124WF supports an optional floor temperature sensor for in-floor radiant heating. The sensor plugs into dedicated terminals and lets you set maximum floor temperature limits.

Smart Home Integration

The Sinope TH1124WF integrates with Amazon Alexa, Google Assistant, and Apple HomeKit through the Neviweb platform. The Neviweb ecosystem is built for multi-zone electric heating, where each room has its own thermostat and they are all managed together through the app. You can create room groups, unified schedules, and set away temperatures across all zones at once. HomeKit integration means Siri control and Apple Home automations are available. Home Assistant users can connect through the Neviweb or HomeKit integrations.

Energy Saving Features

• Multi-zone control through Neviweb lets you heat only the rooms you use rather than heating the entire home uniformly
• Energy monitoring per zone shows exactly how much each baseboard heater costs to run, helping you identify which rooms consume the most energy
• Scheduling with different temperature setpoints throughout the day reduces heating during unoccupied hours
• Weather integration allows the thermostat to anticipate heating needs based on outdoor conditions
• Eco mode provides a one-tap way to reduce all zones by a few degrees
• Vacation mode sets a low maintenance temperature across all zones while you are away

Troubleshooting

• Safety warning: Always turn off the double-pole breaker and verify with a voltage tester that both hot wires are dead before touching any wiring. 240V can cause serious injury or death.
• LINE and LOAD reversed: If the heater does not turn on but the thermostat powers up, the LINE and LOAD connections may be swapped. Turn off the breaker, verify with a voltage tester, and swap the wire pairs.
• Heater not reaching set temperature: Check that the baseboard heater is not blocked by furniture, curtains, or carpet. Restricted airflow prevents the heater from reaching its full output. Also verify the thermostat is not mounted directly above the heater where rising heat gives it a false high reading. Apply a temperature offset in the Neviweb app if needed.
• Won't connect to Wi-Fi: The TH1124WF supports 2.4GHz networks only. If your router uses a combined band name, create a separate 2.4GHz SSID temporarily. The Neviweb app guides you through Wi-Fi setup.
• Breaker trips when heater turns on: The connected heater load may exceed the thermostat's 15A (3600W at 240V) rating, or the circuit breaker itself may be undersized. Check the total wattage of heaters on the circuit. If the load exceeds the rating, install a relay to handle the heavier current.
• Factory reset: Reset through the Neviweb app settings or by using the physical reset procedure described in the installation manual.