P
papaya
Evening guys,
I'm slowly learning how my central heating system works and I would like to ask for your help to understand the purpose of the pipe and valve used with my expansion tank as I can't see the point there :disappointed:
I understand that the white pipe (bended) is overflow and the one with green insulation is the cold feed to the F+E and the other high paper clip type pipe is the expansion pipe for extra protection as all water through it will eventually drop back to the tank BUT I don't seem to understand the one on the right with the valve (circled).
The reason is that this valve controls the water from expansion tank to flow with the hot water from the left through the heater pump. If I turn it off, just the hot water from left will come through to the pump but if I turn it on, it will mix with the hot water comes from left and results in only cold water come through the pump. So what's the purpose of that and should I leave it on or off? I know it sounds stupid but I can't figure out why...
In addition, I would also like to know how could I check if the copper coil in my water cylinder has pinholes?
Many thanks! :blush5:
I'm slowly learning how my central heating system works and I would like to ask for your help to understand the purpose of the pipe and valve used with my expansion tank as I can't see the point there :disappointed:
I understand that the white pipe (bended) is overflow and the one with green insulation is the cold feed to the F+E and the other high paper clip type pipe is the expansion pipe for extra protection as all water through it will eventually drop back to the tank BUT I don't seem to understand the one on the right with the valve (circled).
The reason is that this valve controls the water from expansion tank to flow with the hot water from the left through the heater pump. If I turn it off, just the hot water from left will come through to the pump but if I turn it on, it will mix with the hot water comes from left and results in only cold water come through the pump. So what's the purpose of that and should I leave it on or off? I know it sounds stupid but I can't figure out why...
In addition, I would also like to know how could I check if the copper coil in my water cylinder has pinholes?
Many thanks! :blush5:
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