Hi all,
Reaching out in desperation
I have had a concealed thermostatic 2-way shower / bath valve fitted for years and the shower has never worked properly. If I divert the water output to the bath tap the temperature stays constant, so works fine. However, when diverting to the shower it stays hot for a couple of minutes then goes cold, if I wait another couple of minutes it heats up again and keeps repeating this.
- I have checked the cold and hot water pressures and they are both the same, about 2 bar.
- I bought a new thermostat and replaced this.
- I removed the shower head so that there was no restriction to the flow and problem still persists.
After reading a couple of threads on here, I checked that the boiler was staying on and it is actually switching off and back on again! So this points to `flow rate` being too low according to the other threads.
I can't figure this out though, the only difference between the feed to the bath tap and the feed to the shower outlet is up the way by about a metre including the shower hose itself. Is this really enough to reduce the flow rate so much?
Other observation is that when the combi was put in our garage, the plumbers fed into the old plumbing route, which mean quite a distance is covered before it gets to the upstairs bathroom, including I reckon about 10 elbow fittings. So I can understand this would reduce flow rate maybe? However given the bath tap works fine this does not make total sense.
Any help really appreciated. Dying to have showers like a normal person
Iain
Reaching out in desperation
I have had a concealed thermostatic 2-way shower / bath valve fitted for years and the shower has never worked properly. If I divert the water output to the bath tap the temperature stays constant, so works fine. However, when diverting to the shower it stays hot for a couple of minutes then goes cold, if I wait another couple of minutes it heats up again and keeps repeating this.- I have checked the cold and hot water pressures and they are both the same, about 2 bar.
- I bought a new thermostat and replaced this.
- I removed the shower head so that there was no restriction to the flow and problem still persists.
After reading a couple of threads on here, I checked that the boiler was staying on and it is actually switching off and back on again! So this points to `flow rate` being too low according to the other threads.
I can't figure this out though, the only difference between the feed to the bath tap and the feed to the shower outlet is up the way by about a metre including the shower hose itself. Is this really enough to reduce the flow rate so much?
Other observation is that when the combi was put in our garage, the plumbers fed into the old plumbing route, which mean quite a distance is covered before it gets to the upstairs bathroom, including I reckon about 10 elbow fittings. So I can understand this would reduce flow rate maybe? However given the bath tap works fine this does not make total sense.
Any help really appreciated. Dying to have showers like a normal person
Iain
