Hi all,
Im about to drain my system to allow me to replace a few pipes, and relocate a radiator. My system has a Siemens DA-V322 return valve.
What i would like to know is what are the settings i need to select to allow full drainage of the system.... (I did know, but forgotten)
It has two slide arms on the side of it.. one black plastic and one silver.
The black seems to have the letters W M H
the silver has MAN OPEN...
I think its the Silver one i need to set, but thaught id check as to refresh myself....
Many thanks.
Im about to drain my system to allow me to replace a few pipes, and relocate a radiator. My system has a Siemens DA-V322 return valve.
What i would like to know is what are the settings i need to select to allow full drainage of the system.... (I did know, but forgotten)
It has two slide arms on the side of it.. one black plastic and one silver.
The black seems to have the letters W M H
the silver has MAN OPEN...
I think its the Silver one i need to set, but thaught id check as to refresh myself....
Many thanks.
