Hi, my WSP Gold pump is on the way out after 19 years of service so I'm looking for a replacement. We've had the house from new and looking at the pump installation the WSP Gold pump has been installed upside down. On the label, the flow direction is anti-clockwise.
I was looking to replace the pump with a Wilo Smart A which has a flow direction of clockwise.
a) Does it matter which direction the flow direction goes?
b) Assuming that I fit the Wilo in the way it was intended (i.e. not upside down!), have I got this correct? There must be a reason for the installer to have fitted the original pump upside down!