Thanks for the reply Tony, that is what I will do.
Re. the EXV pressure; the expansion vessel is right next to the header tank in the attic so, correct me if I am wrong but wouldn't there be very little water pressure at the expansion vessel when cold. Maybe a few inches of water. Or should I...
Hi guys,
I have an unusual heating system I have inherited and I am looking for advice. Below (and attached) is a diagram of the system. It is gravity fed but at some point an expansion vessel and non-return valve have been added converting it into (what I would call) a semi-sealed system. I...