This integration allows you to manage your Remeha heating/cooling appliance locally from Home Assistant.
According to Remeha, the following appliances can be extended with a GTW-08 (modbus interface), or have one pre-installed:
| Appliance type | Supported by GTW-08 | Tested |
|---|---|---|
| Elga Ace | ✓ | ✗ |
| Elga Ace MB | ✓ | ✗ |
| Mercuria | ✓ | ✗ |
| Eria Tower | ✓ | ✗ |
| Eria Tower Ace (S) | ✓ | ✗ |
| Mercuria Ace | ✓ | ✓ |
| Mercuria Ace MB | ✓ | ✓ |
| Gas 220 Ace | ✓ | ✗ |
| Quinta Ace 65 | ✓ | ✓ |
| Quinta Ace 160 | ✓ | ✗ |
| Gas 320/620 Ace | ✓ | ✗ |
| miTerra | ✓ | ✗ |
| miTerra plus | ✓ | ✗ |
This integration is known to be working with the tested devices, but since the modbus interface is the same for all others, it is very likely that it will work for those too. This list is also available on the Remeha site (Dutch 🇳🇱): Remeha modbus support.
The following proxies are known to be working with this integration. Other gateways or proxies probably work as well, but haven't been tested.
| Device type | URL |
|---|---|
| Waveshare RS232/485 to WiFi and Ethernet | https://www.waveshare.com/product/rs232-485-to-wifi-eth-b.htm?sku=25222 |
Planned features and features under discussion are available in the issues. If you're missing a feature that has not been mentioned yet in the issues, please submit an issue or a PR.
- Connections:
- Directly through a serial port
- Indirectly through a proxy over WiFi or ethernet.
- Supported climate zones are exposed as climate entities
- DHW (domestic hot water)
- CH (central heating)
- Automatically discovered once the integration has been set up.
- Linked to a device, showing the type of board in the Remeha appliance, including its soft- and hardware versions.
- Climate features are enabled depending on the climate zone type (for instance, a DHW zone is only able to heat, not cool).
- DHW auto scheduling:
- This integration exposes a service called
dhw_auto_schedulethat can be used in automations or scripts. A detailed explanation follows below.
- This integration exposes a service called
To install this integration, you need to have HACS installed in your Home Assistant.
DHW auto scheduling is a feature allowing efficient heating of your DHW boiler by using as much solar power as possible while keeping the interference to a minimum with other devices also using (direct) solar power.
To start using the auto scheduling feature, execute the following steps:
- Request an API key at weerlive.nl
- Install the KNMI weather integration using the button below and enter the obtained API key during installation.
- Reconfigure this integration and provide the required information about your PV system and DHW boiler. Select the KNMI weather entity to retrieve the weather forecast.
- Then just create a new automation with the following properties:
- Trigger at any time between 22:00 and 23:59
- Call the Remeha Modbus action
dhw_auto_schedule - Optionally set the DHW boiler climate to preset
schedule_1.
After creating the automation, a new schedule for the next day will automatically be created. If the preset is not set in the
automation, manually change the preset mode of your DHW boiler climate to Schedule 1, otherwise the schedule will of course be inactive.
Showing current temperature, target temperature and heating status.
