SmarTap installation help

[dimuc]

I have a plumber who is refurbishing my bathroom, he has installed a SmarTap shower that I purchased however the shower is not operating as expected as when the shower is turned on using a 2 dial controller (1.water temp and 2. redirect to showerhead or shower hose) the water comes out of the shower head and hose for a couple of seconds and then stops.

Firstly Iam no plumbing expert (far from it) but I can see the pipe layout in the loft. The hot and cold water feed has T junctions whereby it splits off to the shower unit (inc 90 degree bends) for hot and cold inlets and then continues to a shower pump used for the bath. See attached images of pipe layout, smartap shower details SmarTap - A New Shower Experience - https://smartap-tech.com/

Iam wondering if this setup is causing the shower not to work, I would appreciate any thought from qualified plumbers to help resolve this issue.

Thanks in advance

 

[Danjab]

Just installed a universal pump (negative head) and it all works fine.

Glad you got it working, I have a similar issue, however with a high pressure system off a combi boiler, the app reads 2.2 bar however the water often slows to a dribble.

I'm considering fitting a high pressure hot water tank and pump, it would be good to know if this has a chance of working though as it'll probably cost a lot.

Any thoughts?