Problem with pipework for a Mira event power shower

[The Plumber Guy]

Hi all,

I've just replaced a Mira event that worked fine for 15 years with 'up and over' pipework, which should have been 'down and under'. There's now air in the shower - of course - and I was wondering if there's anything I can fit that will let the air out. I am aware that I should have checked the pipework first but my brain was so fried from being down in the sewer - at the same property- removing a piece of concrete that had wedged itself so hard into a pipe that my rods wouldn't knock it out! I hope your day is much better

 

[Paulplumb]

Try running it with the shower head off and the shower hose low down in bath/tray.