Shelly relays can be used to control heat pumps with smartgrid ready contacts. See Smartgrid Ready Contacts for more information on smartgrid ready contacts.
| Device Type | Variants | Local API |
|---|---|---|
| Shelly Plus | 2PM, Uni | ✅ |
| Shelly Pro | 2, 2PM, 3, 4PM | |
| Shelly Gen3 | 2PM | |
| Shelly Gen4 |
Please note: This integration has not been tested with all the devices listed above. However, since they utilize the same communication protocol, they are expected to operate seamlessly.
Configuration examples in this document are based on the Shelly Pro 2 relay.
The communication between the EMS and the Shelly relay is established via Local API (over TCP/IP). For proper Ethernet wiring, please follow the Ethernet wiring guidelines.
Check the smartgrid ready inputs of the heat pump before wiring a PM model. The models with power metering (Plus 2PM, Pro 2PM, Pro 4PM, 2PM Gen3 and 2PM Gen4) switch their own live wire: O1 and O2 carry mains voltage (230 V) when closed. Only connect them directly if the heat pump's SG inputs accept 230 V. If the heat pump expects potential-free (dry) contacts, which many do, connecting a PM model can damage the heat pump. In that case, use a model with potential-free contacts (Shelly Pro 2 or Shelly Pro 3), or put an interposing relay between the Shelly and the heat pump.
Power Supply Connections
Relay Output Connections
Device Diagram
Refer to the diagram printed on the device for detailed wiring instructions. Ensure all connections match the diagram.
Wire the Device
Ensure the device is wired according to the provided wiring diagram and connect the Ethernet cable securely.
Access the Shelly Interface
Locate the Ethernet Settings
Note: Do not modify any settings while locating the Ethernet IP address.
By following these steps, you will retrieve the required IP address for integrating the Shelly relay with the EMS. For further details and comprehensive documentation, please refer to the official Shelly Installation Guides.