Ventilation control by two parameters

[Vahur Kivaste]

Hello, 

New to Loxone but very exited. 

I am building a smart sauna with Loxone automation. I have configured most of the system (lights, floor heating etc) but got stuck with ventilation. 

I have three rooms, that are connected to a fan extracting used air. 

I want the fan to come on with any of the two conditions met (OR logic):

1) humidity sensor in the shower room reads 60% or more

2) temperature sensor in the hot room reads 40C or more

Now the fun part: the fan is controllable with 0-10V. So the perfect scenario would be that the fan activates with medium speed (voltage 4V) when condition 1) or 2) is met and continues to increase with the humidity level increasing up to 100% (10V). 

Humidity sensor is the Loxone Indoor Temperature & Humidity Sensor 0-10V, temp from the hot room with 1-wire sensor.

Any suggestions how to approach this setup?

Thank you for any ideas ;)

All the best,

Vahur

[Duncan]