M5Sime
One thing worth being aware of.
Theres a difference plumbing in the ACS Vesuvius, evo or Vostok (or Decent for that matter) and something like a synchronika.
With a synchronika the tank is not used . the mains being connected to the solenoid that directly feeds the internal sysyem. The regulator is a must to protect the internal systems.
With the ACS theres no difference to the internal system, plumbed or not . the solenoid simply tops up the tank. Water is drawn from the tank the same , plumbed or not.
The suction from the tank has to be in the bottom of the tank and the level probe set approx 50mm from the bottom. No point having a lot of water in there. The most thats drawn in at any one time is when we fill a mug for tea, americano or warming a travel mug etc. basically a mug full!!
I still use the regulator so the flow in to the tank is not aggressive and splashing. Haven’t checked how bad it is at full line pressure. Dont want to!!!
Its advised to remove and clean the tank periodically. 5 minute job.
I dont do it very often but have had no deposits, slime or smells when i do so.