4 way valve functionality request

[CarloContu98]

Hello, I'm creating an issue ticket since I didn't find any way to contact you directly, but it's really more a request than an issue.

I've recently bought an old house with my gf and I'm trying to renovate everything by myself.
For the domestic hot water I'm using a refurbished 500 liters boiler where I submerged a copper-pipe-spiral that acts as a condenser.
But for the evaporator side I can't implement the ground loops yet, so I'm using an air unit.
Therefore I need to implement the 4 way valve, to de-ice the external unit.

I've already ordered and built your board, which I really like in quality instead of the stuff from Aliexpress and similar products, but I'm struggling to edit the code myself to add the 4 way valve functionality.
I would love if you could help me implement it, even under payment or donation to the project of course.
I thought about using the "hot side recirculation" relay to command the 4 way valve since my hot side is passive and don't need recirculation.

In await for your response, best regards,
Carlo Alberto