AC69404

• Expansion vessel and check valve
• For small unvented water heaters
• Of 5, 10, 15 litre capacity
• Comply with Water Regulations
• 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
• Expansion vessel capacity 2 litres
• Expansion vessel set at 3.5 bar
• Expansion vessel connection 1/2” BSP male
• Check valve 15 mm compression
• Includes banding for wall mounting the vessel