| General > General Technical Chat |
| Electric shower, anything I can do? |
| (1/19) > >> |
| paulca:
So, new house, has electric shower. Shower has three settings, cold, low, high. On low, when I turn it up enough to get good temperature, I get sod all flow/pressure. On high, I have to turn it down to minimum or I get scalded and even then it can overheat and cut out occasionally. So I guess this is because my upstairs water pressure is absolutely rubbish. On low it uses a smaller element and when I turn it up it reduces the flow to make it hotter. However on high there isn't enough water pressure to supply the element with enough flow to keep the temp reasonable. I assume there is nothing I can do with that, like adjust the flow restrictor or something? I'm planning on upgrading the whole heating system to a pressurized setup, so this is a temporary problem, but an annoying one! |
| soldar:
I take it you are dealing with an "on demand" heater which heats the water as it goes by? In America they also call them "tankless". I have a natural gas tankless heater and they are crap. You cannot enjoy a shower with stable temperature. And if your pressure and flow are not stable it makes the situation so much worse. In my second home I have a big tank heater and it is much better. And you can even fit a thermostatic valve and temperature stability will be rock solid. For a good shower you want a good tank of hot water. It does not need to be very hot, just 40 or 45ÂșC will do so you only need to mix very little cold water. Excessively hot water temperature is dangerous and should be avoided. |
| Nusa:
Dangers of talking to an international audience. Terminology isn't clear, since in America most people would ask "What's an electric shower?" In this case, I'm assuming a point-of-use on-demand water heater, either in arms length from the shower or actually in the shower head itself. His other comments make me think he's on a gravity-fed system, using a cistern up in the attic space. Something else that's almost unheard of in American residences. Naturally pressure sucks if the vertical drop is small. I also presume that new house means old house that is new to him. Or he would have a more modern setup to start with. |
| ebastler:
--- Quote from: paulca on July 23, 2019, 06:55:35 pm ---So, new house, has electric shower. Shower has three settings, cold, low, high. On low, when I turn it up enough to get good temperature, I get sod all flow/pressure. --- End quote --- As others have pointed out, your terminology is not self-explanatory, especially to those in other countries. I take it that "low" and "high" are settings which affect the heating power? While, when you talk about "turn it up", you mean the flow rate - right? --- Quote ---On high, I have to turn it down to minimum or I get scalded and even then it can overheat and cut out occasionally. --- End quote --- Now you have really confused me. If you set the heating power to high, I could imagine a situation where you have to crank the flow up to maximum, because otherwise the water gets too hot. But you need to turn it (the flow?) down to minimum?! What's going on?? |
| themadhippy:
try reducing the flow out of the shower,not the flow into the shower ,a washer between the pipe and rubber washer in the shower hose was the old skool way,or get an adjustable flow shower head |
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