Is there a way to limit the On-Time minimum duration ?

[afaucogney]

Hello,

I have a heat-pump to warm my house that is built with compressors. Imagine, this is like a fridge system, with 2 circuits made by gas.
Those compressor (I have 5 items) do not have to start and stop (flickering) all the time, to prevent its health.
Is there a way to limit the minimun on-time duration to 30 min, the same for off-time.

[jmcollin78]

Hello yes. Search activation_duration_min (or something like that, I don't the readme under my eyes) in the readme.

[afaucogney]

Hello, so it seems this is not working. I have seen the param and setup to 30 min.
You are talking about minimal_activation_delay ?
As I remember, it does limit the time between a reactivation (30 min between a stop and a new start), and I would expect it between a start and a stop !
So I need both in fact, that whatever the state, it does stay at least 30 min, and more if needed ! Does it theoricaly match with the timed algo ?

[jmcollin78]

Yes it is minimal_activation_delay. If you set it to 5 min, the cycle_min * on_percent should be > 5 min to activate the switch. Else the switch will stay off.

[afaucogney]

Thanks for the feedback.
I did the test and this was not working ! I had time "on" than "minimal_activation_delay" that was 30 min !
To be 100% to understand, because the percent work is confusing, when you says :

If you set it to 5 min, the cycle_min * on_percent should be > 5 min to activate the switch

does it mean:

• it ALWAYS takes at least 5 min to activate the switch (a kind of latency)
• it is ALAWS at least 5 min in the state "on"
• ~ statically, is 5 min in the time "on"

[jmcollin78]

It means that VTherm will never turn on a heater for less that 5 min (the cycle in min * on_percent).

[MBRetrofit]

As I already explained in another discussion, the heat pump should heat a boiler with an automation based on anything but not the house heating. The Vtherm should drive the TRV's and the boiler, not the heating pump.