That sounds like a water heater problem, wheres the heater at in your home. If it is effected by the outside weather i.e. the heater is in a cold environment then it would effect the hot water output. try turning up the thermostat on the heater if it is gas then it should be knob on the outside if it is electric you will need to remove the top or the bottom cover and adjust it with a screw driver. If this does not work the let me know and we try some other things. With the weather/temp outside effecting the water temp in the shower then I have a hard time believing it is the shower its self.
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The installation must be in accordance with
To ensure activation of the heating elements, the
shower must be connected to a mains water
supply with a minimum running pressure of
100kPa (1.0 bar) at a minimum flow rate of eight
litres per minute (nine litres per minute for the
9.5kW rated model).
For all units the maximum static pressure must
be no greater than 1000kPa (10 bar)
If in any doubt, the pressure should be checked.
If the water temp is fluctuating from very hot and cool the problem could lie with a blockage in the inlet to the shower, scale inside the heater can, shower hose needs replacing or the shower head needs to be cleaned The problem is a "slowing" of the water across the heating elements which causes the water to pick up too much heat
I had the EXACT same problem (installed my tankless last winter and worked fine, now this summer it fluctuates, have to turn the shower completely off and then on again to get any hot water and then it only lasts for a couple of minutes!) Argh - it is frustrating!
Here's what I found: the demand for hot water is lower during the summer (hot) months because the "cold" water coming in is already quite warm. You don't need as much hot water to make the shower temp comfortable. SO, my tankless was shutting off due to low flow demand. I've removed the flow restrictor from my shower head and it helped alot but didn't completely solve the prob. Next step is what has been recommended to me by several people but is much more expensive - change the pressure valve on your shower to a temperature valve. Or just wait til winter and it should work ok again :)
hi there, your boiler will perfectly match the mira excel ( a great choice i might add) a 24cdi will give about 9.8 litres a minute flow rate hot water.
The mira excel is suitable for any plumbing set up and there installation instruction are very well laid out & their helpline is fantastic.
The hot water will fluctuate accordingly to the time of year as the cold water temp coming into the property will vary. but the boiler will modulate to compensate.So in brief in the summer you will notice it hotter than you would in the winter, this has nothing to do with the boiler just the incoming temp of the cold water.
I found a way to get warm water in the shower, but I'm not sure it qualifies as a solution. After trying everything else I thought that maybe when I was feathering the faucet in the shower toward the cold side so I would get warm water that at a certain point it blocked the flow on the hot water side enough so that the sensor in the hot water heater sensed there was no demand in the line and it shut the water heater off. To test this, I went to the kitchen and turned the kitchen sink faucet all the way to the hot side and then turned it on so that I got a small flow of water. I waited for the water to get hot to be sure the hot water heater was working. Once it was hot, I left it running to keep demand in the line and then I went to the shower and turned the faucet on. When the water got hot I started feathering the control towards the cold side and soon I had warm water. So I think I'm right in that the sensor in the hot water heater was shutting the water heater off when the demand in the shower was lowered to a certain point when I was trying to adjust the water temp in the shower.
So now I can get warm water, but it means I have to leave the hot water running at another fixture in the house to create a false demand in the system so the hot water heater doesn't shut down. Is there a way to adjust the senor in the hot water heater so that it will stay on when I'm using the shower only, so I don't have to waste water by running another faucet when I want to take a shower?
You want to know why the presssure on your triton t80i shower has dropped by half?
It is very possible that some debrie has come up in the water and is partially clogging the shower. For this you would have to turn the water off and dissassemble the parts clearing all the small passages, a bit of wire or paper clip works. Perhaps for a pro? If you like you may choose to utilize our Repair Directory.
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