Shower plumbing

[artgeezer]

Hi,
Ive run 22mm pipping from a tee just above my hot water cylinder. This travels up one metre along loft space then down to shower. Am I likey to have air lock/trapped air problems with this set up?????? If so , any suggestions

 

[Expertboy]

What shower are you fitting?

 

[artgeezer]

Hi,
Er , wait for it, a venturi. Cold from mains, hot from cylindar.