Hello, i have just been trial fitting a new set in the wall fancy shower head and a thermostatic shower mixer valve, before i go about tanking and tiling.
combi boiler ferroli, mains fed cold water system, hot water temp turned up to full at approx 55deg c.
i have done 2 trials with differing results.
Trial 1, was a couple of weeks ago just to check out teh unsoundness of my joints. I let the shower run with no other demand on the boiler, but the shower was too cold.
I tweaked an isolating valve under the tray to try to reduce the cold pressure, and hey presto we got a nice temperature shower with a nice pressure. Temperatuer adjustment wa sworking the correct way, ie cold made it coler...i was thinking job done.
In the time between now and then i have only turned the stop cock a little as the cold water perssure seemed a bit high in the taps throughout the house.
Trial 2:
opened shower valve to just get cold water. I checked that there was hot water at the mixer valve, so i then shut off fully the cold water via the isolating valve under the tray.
ran the shower again to get just hot water which is too hot but pressure was fine to shower in. I then opened the cold water isolting valve and just got hot water again.
I then shut off the hot water, and tried the cold on its own... which came out at high pressure, after a few secs of waitng.
i then tweaked the isolating valve for the cold water, and then still got only cold. I tweaked it a little further and got some sort of shower temp but was a little cool. i also noticed that the temperature adjustment of the valve seemed to be incorrect, ie tunring it hotter meant it got colder and had more pressure.
I then gave up.
Having read of valve instructions it mentions a pressure reducing valve may be required after the stop cock... do yo think that is what is causing the problems? unbalanced pressures?
if thats the case what the going rate for fitment? i looked up the valve and saw it was a jaw dropping £65 for b&q!!! are there any other solutions or cheaper valves about... also does it have to be placed after the stop tap, or just on the CW feed to the shower.
Please help/ advise
combi boiler ferroli, mains fed cold water system, hot water temp turned up to full at approx 55deg c.
i have done 2 trials with differing results.
Trial 1, was a couple of weeks ago just to check out teh unsoundness of my joints. I let the shower run with no other demand on the boiler, but the shower was too cold.
I tweaked an isolating valve under the tray to try to reduce the cold pressure, and hey presto we got a nice temperature shower with a nice pressure. Temperatuer adjustment wa sworking the correct way, ie cold made it coler...i was thinking job done.
In the time between now and then i have only turned the stop cock a little as the cold water perssure seemed a bit high in the taps throughout the house.
Trial 2:
opened shower valve to just get cold water. I checked that there was hot water at the mixer valve, so i then shut off fully the cold water via the isolating valve under the tray.
ran the shower again to get just hot water which is too hot but pressure was fine to shower in. I then opened the cold water isolting valve and just got hot water again.
I then shut off the hot water, and tried the cold on its own... which came out at high pressure, after a few secs of waitng.
i then tweaked the isolating valve for the cold water, and then still got only cold. I tweaked it a little further and got some sort of shower temp but was a little cool. i also noticed that the temperature adjustment of the valve seemed to be incorrect, ie tunring it hotter meant it got colder and had more pressure.
I then gave up.
Having read of valve instructions it mentions a pressure reducing valve may be required after the stop cock... do yo think that is what is causing the problems? unbalanced pressures?
if thats the case what the going rate for fitment? i looked up the valve and saw it was a jaw dropping £65 for b&q!!! are there any other solutions or cheaper valves about... also does it have to be placed after the stop tap, or just on the CW feed to the shower.
Please help/ advise
