Does any one know in what position does this red stopcock handle need to be in,and what does this handle control being on or off..I’m asking because I noticed my zone heat problems started when I recently I had my water heater changed out. Lately my 3 zone heat is going on upstairs without being called for. I noticed this stopcock was not fully on or fully off it was in the middle so I moved it up parallel to tht pipe ,however I’m not sure if thts an open position or closed position and I don’t know what tht valve is for...does anyone know if thts suppose to be in this position..![]()
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