Urgent advice needed about hot water

[BobbyJoe]

Hi everyone, newcomer here looking for urgent advice as I am not sure what to do. I moved into my flat about 6 months ago and the landlord had installed a compact combi boiler which is about 3 years old and said it doesn’t need servicing. The problem is that whenever I use the hot water to (shower/bath/wash hands) my skin gets chapped I break out in a terrible rash which starts out as an itch then always a tiny cluster of little blisters appear which then bleed when scratched (looks similar to a fracking rash). I have never had any skin problems before and only when I moved into the flat that I noticed after about a month I was always itchy after using the hot water, so I decided to do some detective work.
The stopcock under the sink was replaced last month so that is fine, the pressure on the boiler is also fine, the mains cold supply is safe and I don’t have a water tank as the water is supplied via the cold mains. I told the landlord who said there shouldn’t be a problem as the boiler was checked a few years ago. I was told not to touch the “cold water inlet stopcock” which is just under the boiler but I did turn it to see what it does, instead of the cold water it controls the hot water pressure and clockwise it turns the water off and anti-clockwise it turns it on. Now for the strange part, when I turned it halfway I noticed within days that whenever I used the hot water I didn’t itch and the rash started to clear so what could the problem be does something need be replaced or is some inlet/outlet part in the wrong way around? How much is the cold-water inlet stopcock meant to be turned because when I turn it fully anti-clockwise and have a lot of water pressure, my skin breaks out, becomes chapped and the blisters appears.
Would anyone be able to offer any help or advice on this because I finally managed to get this flat and this problem is stressing me out that I am considering moving out and will then have to forfeit my deposit. I feel disappointed that the landlord and agency are not considering this as a problem because they say that everything such as the safety of the drinking water is safe but I know the problem lies with the hot water as I left for a few weeks and stayed at a friend’s house and my skin cleared up including the blisters but as soon as I came back to my flat within days it reappeared.
I would be very grateful if anyone can offer me any advice or suggestions thank you.

 

[drip-dry]

Think you are barking up the wrong tree in the wrong forest ,but a very good argument for landlords to get into another business

 

[BobbyJoe]

 

[Jones82]

Closing or altering the valve you mention can't possibly affect the attributes of the water leaving the boiler. An example of this would be running a cold tap, half close the tap, has the attributes or chemical composition of the water changed? No, all you are doing is restricting the flow of water, changing its volume, not its composition.


It is possible that plumbing or heating water could be irritant to your skin. Possibly due to a chemical, perhaps an additive used either to maintain or install the system, being present in the pipes.


However the very fact that you noticed a difference just by adjusting the flow disproves this theory. I'm afraid your symptoms appear to be coincidental, most likely related to a food or animal allergy. Or even brought on by stress?


To absolutely prove this theory, without doubt, take a sample of the hot water and have it tested, you could also ask friends and family to try using the hot water.

 

[BobbyJoe]

12345

 

[SimonG]

67890

 

[BobbyJoe]

First an update of events so far, the good news is I have been using cold water from the kitchen tap and guess what no more cuts on my hands, ears, legs etc.. dry skin is getting better with the rash almost disappearing and no itching yet. I have noticed a big difference especially today and the only thing I have done is use water and boiled it from the cold tap in the kitchen nothing else. I can’t express how much better I feel as I have been hiding and covering up for months as it looked so bad being covered in band aids!

I called the boiler customer service depo and spoke to a technical person who suggested this from what I could remember, cross contamination may be due to Non Return Valve being open and the system water is mixing with the cold water going into the boiler but leaving the cold water supply uncontaminated. The NRV has been fitted the wrong way around it’s either to the cold mains or central heating feed because the NRV allows medium flow in one direction which prevents backflow in domestic water. It isn’t the boiler which is the issue but things have been put in the wrong way around by the installer is what he told me.

An engineer is hopefully coming out next week, I also found out the last tenant only stayed for 6 months then moved out because he was getting sick (I don’t want to speculate but perhaps the hot water was also affecting him). The flat was empty for months before I moved in and the combi boiler was switched off from the mains, the landlord put it on when I moved in.

I will pay for an engineer and so far I can think of these things to ask him/her to check, DHW outlet/inlet valves, CH return/flow, DHW non return valve, set flow outlet temp, DHW outlet temp. Is there anything else in particular I should get them to definitely check as paying is not my concern but sorting this out is. Also are there any other places NRV’s would be placed that I should be aware of, many thanks.

(The flat had a gas fire place and cylinder boiler with a storage water tank before the combi boiler was installed a few years ago)

 

[Riley]

Can't be from the heating side as you removed the filling loop

 

[BobbyJoe]

Besides under the kitchen sink where else is a stopcock located within a flat? (NRV on the rising main to prevent backflow)

 

[Riley]

Backflow from what I'm missing the point

 

[Masood]

cross contamination may be due to Non Return Valve being open and the system water is mixing with the cold water going into the boiler but leaving the cold water supply uncontaminated. The NRV has been fitted the wrong way around it’s either to the cold mains or central heating feed because the NRV allows medium flow in one direction which prevents backflow in domestic water. It isn’t the boiler which is the issue but things have been put in the wrong way around by the installer is what he told me.

This is where I was going with closing the valves and removing the hose from the filling loop. Now you've done that, this theory is blown out of the water. The only other place where there is a possibility of primary/fresh water cross-contamination is within the plate heat exchanger if it is ruptured internally but the likelihood of that being the case is very small, and you would be seeing several other symptoms first.

Whatever you do, make sure that you get a Gas Safe registered engineer in, and DO NOT ALLOW YOUR DIY NEIGHBOUR TO MEDDLE. You would BOTH be breaking the law if you do that again.

 

[BobbyJoe]

I won't be doing that again Masood believe me (my DIY neighbour is installing a combi boiler himself so I won't meddle with this).
A registered gas engineer of the makers of the boiler are going to come out and check it as they will know the machine inside and out.

In due time I will keep you posted thank you.

 

[Riley]

I'd also report your neighbour to gas Safe. You have to live next door to his DIY BS after all

 

[Masood]

I'd also report your neighbour to gas Safe. You have to live next door to his DIY BS after all

Seconded. His DIY work could lead to a gas or water leak, carbon monoxide poisoning, explosion - all of which affect your well-being. Report to Gas Safe and your local authority building control.

Remember this is the guy who said your skin problems were down to a faulty gas valve. He knows the square root of diddly squat about boilers.

 

[BobbyJoe]

Hi everyone I thought to wait a while before updating the on the forum with the current situation. The good news is that within 2 weeks my skin has been gradually improving, the blisters and cuts are healing, there is still dry skin however I think with time this will heal fingers crossed.

The changes made:

The big change I made was put the hot water temperature up to the max as advised by the combi boiler technical staff I called. The water is not boiling at no:10 but it is warm enough not to use the cold water with. It is strange that when I change the temp dial to a lesser number such as 6, 7 or 8 it is hotter than number 10?

The second thing is that I have turned the dial to hot water only and this has made a difference. If I change the dial to central heating and use the hot water then I break out in a rash again but by switching the CH off and turning the dial to hot water only has been a saviour. I don't understand why that is but it seems to be working, the hot water tap in the bath seems to be much better than the shower and both sinks hot water taps, no idea why that is but I can live with using the bath hot water tap. (See pics)

7 months of hell and now I hope with the new year coming I can get better, thank you to everyone in helping with this ongoing issue.

 

[joni os]

Thanks for the update, pleased to hear improvement. The water being heated in your boiler remains the central heating water, which then transfers heat, via a plate heat exchanger, to the domestic hot water. You improvement appears to confirm there is no cross contamination between the primary circulation,(Heating), and domestic hot water when diverter valve remains in the," no heat" position.
Living without heating is not something we should accept in the 21st century and the 2004 housing act gives councils power to ensure landlords comply with obligations.
You will need medical confirmation of improvement in skin condition,(doctor), before challenging landlord. Then, if there is a relapse, with heating restored, membrane in diverter valve would appear suspect. Give landlord written updates of your condition but DO NOT carry out work on his boiler.