Required if there is a cold water draw off nearby or if expansion cannot be accomodated in the pipework
Length of pipework needed for expansion 1.4 m for 5 litres, 2.8 m for 10 litres and 4.2 m for 15 litres
Use this kit AC69404 where incoming water pressure is below 4.2 bar. If incoming water pressure is above 4.2 bar AC69405 is required which also contains a pressure reducing valve
Expansion vessel must be installed vertically with the connections at the base
