How to size an expansion vessel?

When the volume of water increases in a system it needs somewhere to go, this is where the expansion vessel comes in. Expansion vessels must be sized correctly to ensure they can store a particular volume of water. The size of the vessel is determined by several factors to ensure the correct size is installed; these are as follows:

• System Temp

• System Volume

• SRV Setting

• Pre-charge setting

• Heating or Potable

How can this be simplified? Ed Morris, Technical Manager at Altecnic talks through a simplified method of expansion sizing using a vessel calculator.