I have just fitted a NewTeam shower pump (sorry don't know the model as its worn off). It looks like it may be quite an old model but hasn't been used before. I've installed it next to the hot water tank, I'm only using it for hot water though it does have 2 inlets+outlets.
Once its switched on, it stays on regardless of whether there is any water flow.
Is there something I may have missed or do some older units not have flow sensors built in? Any help appreciated!