how hot

[poshman]

hi helpers, ive been having a heated ( pardon the pun ) discusion with other half re.. how hot the settings should be on the immersion heater i say between 65 and 70 deg esp in winter but she is under the impression that if you should be able to leave your hand under the running tap. thank you
p s at what temp would you say the water would be classed as scolding

 

[Diyisfun]

If you have set at this Mrs wants it, as soon as you run a few pints it will start to be cold. I think there is a recommended setting I think its about 80(to do with scaling)

Edit
Have a look here http://www.med.umich.edu/1libr/pa/pa_hotwatr_hhg.htm

http://www.naturalhandyman.com/iip/infwaterheater/infwhadjust.shtm

They are USA but so what

 

[ban-all-sheds]

hi helpers, ive been having a heated ( pardon the pun ) discusion with other half re.. how hot the settings should be on the immersion heater i say between 65 and 70 deg esp in winter but she is under the impression that if you should be able to leave your hand under the running tap. thank you

A practical demo of why she's wrong is far better than an argument.

Set it to what she wants - she'll soon change her mind.

Or get mixer taps...

p s at what temp would you say the water would be classed as scolding

I don't know at what temperature it starts to do immediate damage, but I'm sure I read somewhere that 55°C is the pain threshold for most adults...

 

[kendor]

from an industrial angle in an office block for instance, a calorifier tank would store water at very high temperature as it works out more efficient in storing heat for longer period x energy used to heat it.
the water is pumped in a ring with tap offs (excuse the pun) to basins etc the water can come out extremely hot very rapidly, if no mixer taps are used and that's why you see signs next to basins warning of Hot water as it normally is far hotter than you expect from your domestic setup.

 

[Steve]

I thought 60 degrees was the norm?

 

[Nijinski001]

The whole argument could be futile anyway if the ODPM gets their way on temperature regulators for taps.

If you want a good argument Poshman as a reason for a divorce then do it before the ODPM sets the standard 'cos then you'll have no argument.

 

[andy]

The whole argument could be futile anyway if the ODPM gets their way on temperature regulators for taps.

is there anything the government are gonna leave alone?!

 

[securespark]

The whole argument could be futile anyway if the ODPM gets their way on temperature regulators for taps.

is there anything the government are gonna leave alone?!

43 degrees C is considered the temp to limit hot water to.

http://www.scotland.gov.uk/News/Releases/2005/09/05115511

 

[ban-all-sheds]

Ye gods.

So if you've got a bath with a hot fill, and a cold fill, how large is your cylinder going to have to be for you to run a nice hot bath if you can't use the same mix of very hot & cold as you would normally do?

 

[securespark]

Bigger than the span of a fisherman's arms.......

 

[empip]

Need for high temperatures
Best practice dictates that hot water is generated and stored at temperatures of no less than 60 deg.C in all domestic dwellings. This is primarily to prevent the proliferation of micro-organisms within the Domestic Hot Water system, but it also allows the use of more compact storage cylinders, which can help reduce energy costs. However, hot water temperatures that kill bacteria such as legionella will cause scalding.
Scalding occurs well below the boiling point of water. Temperatures above 45deg.C can cause serious injury very quickly. With water at 70 deg.C, partial thickness injuries occur in well under 1 second, and full thickness burns in approximately 10 seconds. At 60 deg.C, similar injuries occur in approximately 7 seconds (partial), and 90 seconds (full thickness).

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