Greetings and Felicitations, O Great Ones!

It is I, Robot, er, Francis. (And the Thunderbirds ("THE Thunderbirds?!?!?!)
movie is pants!).

I have run the system for about a week with cleanser. Flow now up to 82 deg
C, return about 70 deg C. I have to balance system now (Is that Phil's
faq?).

Pressure on input to gas valve 20mbar.

Came across a

Schnellkupplungen for a Membrandruckausdehnungsgefäß

while Googling.

My search for Schnellkupplungen for a Membrandruckausdehnungsgefäß has shown
me that what is involved is an item that enables the expansion vessel to be
isolated for servicing without draining the whole system. Some contain a
locking cap that is sealed in a similar manner to electricity and gas
meters.

It seems that these conform to regulations in some parts of Europe.

One of my 2-port zone valves seems to be faulty. When DHW valve is open the
upstairs rads seem to heat up. I don't think it is reverse circulation. The
upstairs zone valve motor seems to be working and is not calling for heat,
but flow pipe gets warm


FrancisJK