BS 699 84th Edition, July 31, 1984
Specification for Copper Direct Cylinders for Domestic Purposes
Includes all amendments and changes through Amendment 2, September 1990
Additional Comments: W/D S/S BY BS 1566-1
Published By:British Standards Institution (BSI)
Requirements for copper direct cylinders with capacities of between 74 and 450 litres, for storage of hot water. Covers 4 grades and 16 sizes including a size 9E suitable for use with off-peak electric water heating systems. Other aspects covered include factory applied insulation and protector rods.