i have installed a shower pump in my airing cupboard which is close to my bedroom and for that matter other bedrooms. i wish to move the pump into the loft space but on the pump instructions it says that the vertical distance between the pump outlet and the water level in header tank must be at least 2 metres. i have asked around and my othefriends all have there shower pumps in their loft space, so can i put mine there aswell?