Combi - Shower problem

[Bowler]

Since installing a non-electric shower in a loft converted ensuite it has not worked properly. The pressure is poor and there are wild fluctuations in water temperature - the pressure in the hand-basin is great. The shower has been checked out and it appers fine. The boiler - a Worcester 280 RSF combi, installed in 1997, is below the level of the shower by some 3 metres. Do I need a different boiler or is the only answer an electric shower? Any suggestions welcome. Thanks in advance - Bowler

[solarsmith]

what type of shower is it?


does your shower have nrv's insatlled on the inlets? if so this could serverlly reduce the pressure to the unit.. obviously you have good pressure to the loft?
you could try removing the nrv's from the shower to test.

[heating-eng]

is it low pressure you are getting ?

[cyrus12]

Is the pressure the problem? Since your boiler is not very old and if it is not yet damaged then there is no need to change it. The nrv's often block the pressure therefore you may try what "solarsmith" have suggested.

[oilman]

Since installing a non-electric shower in a loft converted ensuite it has not worked properly. The pressure is poor and there are wild fluctuations in water temperature - the pressure in the hand-basin is great. The shower has been checked out and it appers fine. The boiler - a Worcester 280 RSF combi, installed in 1997, is below the level of the shower by some 3 metres. Do I need a different boiler or is the only answer an electric shower? Any suggestions welcome. Thanks in advance - Bowler

try checking that the connections to the shower are the right way round i.e. check that hot and cold water pipes are connected the right way.
If the shower has been fitted in reverse the thermostat tries to add more hot water but cold arrives hence a possible confusion
IT is NOT advisable to remove the NRV's this is a blending unit and can cause hot water to exit from cold taps if removed