What is the V40 capacity of each unit?

V40 refers to the volume (in litres) of hot water available at 40c.
Model 70: 105
Model 150: 199
Model 210: 301
Model 300: 436
In line with UK Building Regulations, we do advise the installation of a suitable hot water supply tempering valve at the outlet of the appliance, to prevent the risk of scalding.