THERMOSTATIC CONTROL mixer shower

[Rick-b]

Anyone know where I am going wrong..??

Brought and fitted a fixed thermostatic mixer shower, with a valve which lets you use a attached wondering shower head. Having a gravity fed system, the cold water supply to the shower is fed straight from the cold water tank in the loft. The hot is fed of the hot water pipe to the bath tap.
But the water preasure coming out of either shower heads is very poor, even when I hold the wondering shower head below the bath tap level (the cold water out of the bath tap blasts out, the hot water is not as good).
Is my problem unequal hot/cold water preasure being fed to the mixer??, (even though the same results occur when you turn the temp setting down to 0 degrees?)
Thanks in advance

 

[supermario]

Mixer showers should have thier own dedicated supply from the hot water cylinder cant guarentee that will solve your problem but you asked where you were going wrong!

 

[ChrisR]

Wander if you've bort one for High pressure which you don't have?