M
Mark
Hey I am currently studying for my level 3 at college and learning about unvented hot water systems. I have a question about the cold feed to these cylinders if anyone can help. I know it need a composition valve on it which contains an in-line strainer and pressure reducing valve. And a pressure releive. How do you position this valve if the cold feed enters the room at the base of the cylinder as it need to be higher than the waste and have enough room to get an expansion vessel on after the valve.