Does anybody integrate MAX! Thermostat and MAX! Cube LAN Gateway in an water based Underfloor Heating System.
Not exactly. But I’m using those MAX! Thermostats with Openhab. And I can do what ever I want. Setpoint physically on the device itself but also set it from openhab (together with the mode auto/manual).
The trick is NOT to use the Cube but a different “Gateway” hardware. That is a RPI (Zero in my case) together with a little RF module.
The required software is Homegear.
For OH integration you can choose between the homematic binding or MQTT. I’m using the latter. Works fine.
Small drawback: Once you change the target temp (or mode) on the thermostat it takes a while (1 minute or so) until data is published from the thermostat to Openhab. I think this is a limitation of the MAX! hardware. And not every feature is available to be controlled. See reference.