This Specification sets out the requirements for plate heat exchangers. These are intended to be used in heated water supply systems for the indirect heating/cooling of water in a plumbing system.

These plate heat exchangers are components of water heating/cooling systems and are designed in various configurations including number of plates, plate design and size, in order to suit the installation.

The plate heat exchangers may be single or double wall construction and function with a heat exchange fluid in the primary circuit and water in the secondary circuit.