I have a system that produces hot water with a heat pump. Now I want to add a hot water tank to soften the peaks in demand.

I'm using: WaterHeater:Mixed with 0W but I don't understand the difference between "Use side inlet node name" and "Source side inlet node name".

I have a system that produces hot water with a heat pump. Now I want to add a hot water tank to soften the peaks in demand.

I'm using: WaterHeater:Mixed with 0W but I don't understand the difference between "Use side inlet node name" and "Source side inlet node name".