That is true IF the pump is currently pumping upwards!
Can you advise which direction arrow goes?
I rather had it in my mind that the problem might have been caused by someone replacing the pump which I find is 90% of the reasons.
The cylinder looks fairly recent and it seems unlikely to me that someone who can install it neatly like that would not have noticed the boiler was wrong and also that the system could have been missperforming badly for so long.
So if arrow is upwards then ultimately pipes at boiler need to be crossed over.
Even so I still suggest you try reversing the pump as thats a simple DIY job and will correct most of the faults until you can get the pipework corrected.
Tony
Can you advise which direction arrow goes?
I rather had it in my mind that the problem might have been caused by someone replacing the pump which I find is 90% of the reasons.
The cylinder looks fairly recent and it seems unlikely to me that someone who can install it neatly like that would not have noticed the boiler was wrong and also that the system could have been missperforming badly for so long.
So if arrow is upwards then ultimately pipes at boiler need to be crossed over.
Even so I still suggest you try reversing the pump as thats a simple DIY job and will correct most of the faults until you can get the pipework corrected.
Tony