Use split to accelerate heating and reduce hours of preheating

[Thebasestar]

Hi all,
my setup is made by a PUMY p112vkm5+ERST20C VM2DR1(FTC6)+3 split all r410, and i discover that the branchbox never close completely the pipes unused, i mean that refrigerant gas move on every lines even if not in use ( installer told me that it is normal installation, and in case i want he can setup the system to completely close unused line but he need to add about a kg of more r410 ). Well i found a way to make it usefull, i created a rule on HA to activate every split in ventilation only (every other mode is inhibited when ecodan if producing hot water) when the refrigerant temperature is over 37° and to stop ventilation when the temperature fall under 35.
After about a month of use i can say that the rooms heating is now very fast and i've reduced hours of preheating. Anyway this is working well for my radiator setup, but probably can be usefull for other setup
Base