​​​​​​This kit allows you to upgrade the old lower pressure heat exchanger with our new design, capable of supporting pumps up to 45PSI. It also offers significant other advantages including a much more elegant installation, no water leaking from the overpressure valve and higher flow rates through the larger diameter hose. It also provides a single drain point, rather than having three points to drain from.
 
You will recieve
New heat exchanger
New rubber hose + clips
Central plumbing unit with expansion tank & drain hose
Instructions