Tap water too hot

TheProfessional

Hi all,

We have just moved into a house and the kitchen tap takes a while to heat and then seems to get far too hot. It's a mixer and tricky to find a comfortable 'warm' point 

I can probably live with that but the bathroom hot tap is scalding hot so it is impossible to wash your hands properly. Any ideas what I can do?

Boiler is:


The bath hot tap seems fine and doesn't get to the scalding temperature and my wife is keen that the bath tap isn't made cooler as she feels it won't be hot enough to get bath to the right temperature for little one!

Any ideas?

rob7475

If there's no dial on the panel of the boiler to adjust the water temperature yourself, you'll need a gas engineer to adjust the boiler. I'd arrange to get the boiler serviced and ask the engineer to adjust your hot water temperature at the same time. A service will cost £70-£100 and they shouldn't charge for adjusting the water temperature. If you get someone out to just adjust the temperature, the cost is going to be near enough the same.

Hasbeen

Add some cold water to sink / basin when washing hands? 

grumbler

In my bathroom I have a mixer tap in the basin, but still added a thermostatic valve so that hot water is never hotter than ~40 degrees (adjustable). I still can make it colder if I wish or use cold water only.

grumbler

rob7475 said:

If there's no dial on the panel of the boiler to adjust the water temperature yourself, you'll need a gas engineer to adjust the boiler. I'd arrange to get the boiler serviced and ask the engineer to adjust your hot water temperature at the same time. A service will cost £70-£100 and they shouldn't charge for adjusting the water temperature. If you get someone out to just adjust the temperature, the cost is going to be near enough the same.

I am no expert, but it's quite possible that this can be done only together with the CH water temperature.
https://www.google.com/search?client=firefox-b-d&q=worcester+28i

Homer_home

Your Ch gauge is too low too , the pressure should at 1.5 bar (where the red dial is)  yours is less than 0.5 bar I'm surprised your central heating is working 

Because of this I agree with the others a service is probably in order , doesn't sound like the previous owners took much care of it 

Jeepers_Creepers

Wooo, that must be an oldie. As Grumb suspected, it doesn't have a DHW temp control.

Instead, it works like an electric shower - the more water you draw (faster flow from tap) the cooler the water will be due to the boiler having a fixed, limited heating ability.

"DOMESTIC HOT WATER TEMPERATURE CONTROL By slightly reducing the flow of domestic water from the tap, the delivery temperature will be increased. This is of particular advantage in the winter, for example to increase bath water temperature and to remove heavy grease deposits on plates, etc. Also this will provide an added advantage of reducing the delay before hot water is obtained."

Ergo, the reason your bath temp is less is 'cos the bath taps runs faster. Looks like there's no way to adjust this, so you either need to 'take care', fit thermostatic taps, or save up to replace the boiler. Until then, turn on your kitchen/basin taps to 'full' for max flow = lower temp.

 file:///C:/Users/Work/Downloads/Worcester_24_and_28_i_RSF_Operating_Instructions.pdf

MrsStepford

Hot tap on bathroom basin gets too hot here. Husband told me to put cold into basin first. He says that the reason it's very hot, is to kill legionella.

FreeBear

MrsStepford said: Hot tap on bathroom basin gets too hot here. Husband told me to put cold into basin first. He says that the reason it's very hot, is to kill legionella.

If you have a combi-boiler, water never hangs around in the pipes long enough for legionella to breed. A system boiler with a hot water tank, as long as the water temperature is maintained above 50-55°C for say 8 hours a day, any bacteria will die off. It is only when the water is in the 20-45°C range that there is a (minimal) risk of legionella developing.

Paula_Smith

Do you have a hot water tank? Has it got an immersion heater that is permanently turned on?

Jeepers_Creepers

He doesn't - it's a combi. 

I think the cause has been answered.