What is BS 1566-2 – Specification for single feed indirect copper cylinders about? 
BS 1566 is a European Standard series that discusses copper indirect cylinders for domestic purposes.
BS 1566-2 is the second part of the BS 1566 series that provides specification for single feed indirect cylinders. The main objective of BS 1566-2 is to ensure that the single feed indirect cylinders play a positive role in overall functioning of water supply systems.
BS 1566-2 specifies requirements for copper cylinders, with or without the optional features listed in clause 11, for the storage of hot water, where the water is heated indirectly by the water circulating in an integral primary heater of annular or coil type and for which only one feed cistern is required, the feed water to the primary circuit being obtained from within the cylinder through the primary heater.
Who is BS 1566-2 - Specification for single feed indirect copper cylinders for?  
BS 1566-2 on specification for single feed indirect cylinders form is relevant to: 
- Manufacturers of single feed indirect cylinders
- Anyone involved in commissioning, operating, installing and maintaining copper cylinders
- Product designers
- Engineers
- Quality control and testing personnel 
- Local bodies
- Regulatory bodies
Why should you use BS 1566-2 - Specification for single feed copper indirect copper cylinders? 
For single feed indirect cylinders to be effective and reliable at the point of use, it is essential that manufacturers abide by best industry specifications.
BS 1566-2 provides dimensions of single feed copper indirect cylinders based on grades along with its designation for ordering purposes. Guidance on tolerances, materials and manufacture of single feed copper indirect cylinders is also covered in BS 1566-2.
A new size 9E has been added to provide an additional size of cylinder suitable for off-peak electric water heating systems. A specification for aluminium protector rods is also included.
Guidance on design of cylinder top and bottom, screwed connections for pipes and other optional features are discussed in BS 1566-2.
Performance tests to determine the standing heat losses from factory insulated cylinders and test for isolation of primary and secondary water is also provided in BS 1566-2.
Thus, if you are a manufacturer of single feed indirect copper cylinders for domestic use, compliance with BS 1566-2 can help you ensure your products are fit for its intended purpose. As a result, risks of premature failures due to corrosion can be avoided.
