Domestic Hot Water Temperature Uk

The water supply to the tmv should be at least 50 c within one minute of running the water.

Domestic hot water temperature uk. The hottest water temperature bearable by the hand is 50c but this is not hot enough to kill the legionella bacterium. Consequently the minimum water heater outlet temperature in residential systems should be set at 54c to produce a tap temperature of at least 49c. Hot water water at a temperature greater than or equal to 110 f 43 c. Can be fitted to limit the temperature of the stored water should the thermostat fail.

This does not mean it is good design to store the hot water at 110 f. If you were to run a bath at that temperature without adding any cold water it would only take seconds to get a serious deep tissue burn. The plumbing codes define hot water as follows. Inhaling water vapour contaminated with legionellosis bacteria causes pneumonia like symptoms that can kill you if left untreated.

The water temperature should be at least 50 c within one minute of running the water. For extra safety you can install a thermostatic mixing valve. This is most likely in houses built between 1945 and 1975. If you set the thermostat much higher than this the water that comes out of the taps will be too hot and there ll be a risk of scalding.

See annex a for further information. No there is no code language addressing a minimum domestic hot water storage temperature. A domestic hot water cylinder thermostat should be set at 60 65ºc. This is high enough to kill off harmful bacteria such as legionella.

Hot water should be set at 55 60 but you can leave the stat at 75 if you want oaps and young children around you do not want much higher than 55 60 bripl 2 may 2005 2. Scalding risk from domestic hot water systems safety alert. In the home hot water will also be stored at around 60 o c the temperature at the tap is normally around 55 o c.