I have a customer with a crosswater wlbp1501r+ concealed mixer, it is literally months old.
Right from the start they have had "not as hot as they would like" showers, I've calibrated the shower to be as hot as it can possibly be, we still couldn't get the temperature above the 40 degree mark.
I increased the hot water temperature at the boiler and this worked for awhile but now the incoming mains temperature as dropped, due to the winter months, the shower has become tepid again.
The customer has spoken to the manufacture, first they said to fit a pressure reducing valve and this should have been done according to the MI. However I've found the manual online and it only mentions fitting a prv where the incoming main exceeds 5 bar, this is not the case. Round here your lucky to get 3!
We spoke to the manufacture again and this time they said the difference between the hot and cold must be 0.5 bar at most and the prv should be calibrated to achieve this... I have never had to do this on a thermostatic mixer shower and this is not mentioned in the MI.
Lastly, the customer has a brand new fitted kitchen, fitting a Prv would be a bit of a ball ache, could we turn the stopcock down to achieve a similar result. I realise it won't change static pressure (classic flow and pressure difference) but it could lower dynamic pressure? Also the hot and cold are fend from independent supplies, so limiting the cold stopcock will not affect the hot supply.
Thanks for your help
Right from the start they have had "not as hot as they would like" showers, I've calibrated the shower to be as hot as it can possibly be, we still couldn't get the temperature above the 40 degree mark.
I increased the hot water temperature at the boiler and this worked for awhile but now the incoming mains temperature as dropped, due to the winter months, the shower has become tepid again.
The customer has spoken to the manufacture, first they said to fit a pressure reducing valve and this should have been done according to the MI. However I've found the manual online and it only mentions fitting a prv where the incoming main exceeds 5 bar, this is not the case. Round here your lucky to get 3!
We spoke to the manufacture again and this time they said the difference between the hot and cold must be 0.5 bar at most and the prv should be calibrated to achieve this... I have never had to do this on a thermostatic mixer shower and this is not mentioned in the MI.
Lastly, the customer has a brand new fitted kitchen, fitting a Prv would be a bit of a ball ache, could we turn the stopcock down to achieve a similar result. I realise it won't change static pressure (classic flow and pressure difference) but it could lower dynamic pressure? Also the hot and cold are fend from independent supplies, so limiting the cold stopcock will not affect the hot supply.
Thanks for your help
