Advanced airflow control then running in heat_recovery

[manuelfink]

I'm curious, whether this project is still maintained and feature requests are considered?

I have some questions, whether following advance scenarios are possible with the blauberg vent?

Let's first verify my understanding is correct

• "ventilation" means it blows air out
• "heat_recovery" means it alternates. Alternating normally requires two always run in pairs.
• "air_supply" air is pulled in.

Let's say I have following vents.

• Kitchen1
• Eating2
• Room3
• Room4

Normally in heat recovery mode I like the following vents to run in pairs:

• Kitchen1& Eating2
• Room3 & room4

If I cook, I like to have kitchen1, eating2 blow the dirty air out, so I would put them to airflow: ventilation and room3, room4 I would put to air_supply. Is this assumption correct?

Now let's assume room 3 has a wood stove. If the stove is running and heating, i like to spread the heat across the rooms.

How can I define on heat_recocery, which vent is the master and which vents are running as his slaves and how they form pairs eg now kitchen1 (master of group, ventilation) & room3 (air supply) and eating2 (ventilation) & room4 (air supply)?

[Tscherno]

Good ideas, but unfortunately it seems nobody maintains this anymore. :(

[dennorske]

I guess grouping of fans is not currently a feature on this integration, however, this sounds doable with HA's automation.

I have Done something similar, but triggering based on temperatures, where heat exchange is applied under a threshold and low fan speed, while increasing temperatures (with dynamic thresholds as number helpers), the automation will change the airflow mode to air supply and then try to supply fresh air to cool the apartment down.

I am using Flexit Roomie Wifi fans, and they already have a concept of "Slave" and "master", so I can group my fans depending on their location.