Hey
So we just had a new 300L outdoor electric cylinder installed. There is some dripping coming from the cold water expansion valve when the cylinder is heating, which I believe is normal. The thing is, it is warm/hot water. Everything I've read says that the water should be cold, since the valve is on the cold water inlet side. However, this expansion valve is also connected to the tempering valve, which is connected to the hot water outlet :S
So my question is, is it normal for the water dripping from the cold water expansion valve to be warm/hot in this scenario? I've tried to get a straight answer from the plumber who installed it, but he's been a bit vague.
Cheers