Bring your Duoetto Gen 3 water heater into ROAMiQ. The module connects to the heater's controller harness over RS-485, so you can switch the heater, set the water temperature and see its status from the ROAMiQ Display Screen and the ROAMiQ app, alongside the rest of your build.
Your water heater stops being something you walk over to. Have hot water ready when you get back to the van, turn the heater off to save power, and check the water temperature at a glance, all from the same screen as the rest of your build.
Duoetto Gen 3 water heaters. Requires a ROAMiQ Hub.
ROAMiQ · Integration chip
Connect your Duoetto Gen 3 to ROAMiQ for heater power control, target-temperature adjustment, and reported temperature and on/off status. The chip uses its own 12V supply; only the Duoetto red and blue data wires connect to it.
The controller connection is exposed at the rear of the Duoetto. Use the ROAMiQ 4-pin harness and matching Duoetto controller plug. Follow the Duoetto Gen 3 wiring and setup guide.
Disconnect both AC and DC heater power before cutting or connecting the harness. The heater's DC power leads and three-prong AC power connection are separate from the controller harness. Follow the Duoetto installation manual for heater power wiring and prepare and fill the heater before testing heating.
Identify the ROAMiQ connections by pin; do not rely on color alone if your supplied harness differs. Only Duoetto red and blue go to the chip.
| ROAMiQ pin | Function | Connects to |
|---|---|---|
| 1 | RS485A | Duoetto red |
| 2 | RS485B | Duoetto blue |
| 3 | GND | 12V supply negative |
| 4 | 12V positive | 12V supply positive |
The chip's 12V and ground come from its own 12V supply, such as the house battery or a 12V circuit. The Duoetto white and black wires don't connect to the chip.
Use a 3-way connector on red and another on blue. Each joins the Duoetto plug harness, the original controller and the ROAMiQ harness. Rejoin white and black between the plug harness and the controller with inline connectors, as they were before. Power the chip from its own 12V supply.
If control from ROAMiQ or the original controller is unreliable with both connected, use the arrangement without the original controller.
Use an inline connector on red and another on blue to join the Duoetto plug harness to ROAMiQ pins 1 and 2. Insulate the Duoetto white and black wires separately; they aren't used. Power the chip from its own 12V supply. You still need the matching plug that fits the Duoetto controller connection.
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