new thermostatic mixer shower

[gavlanc]

Hi i am installing a new thermostatic mixer shower and was after some advice> At the moment i have the cold water to my bathroom straight off the mains which is about 4 bar and the hot come from a cylinder feed via a header tank which is at low pressure.

Is it possible to put a pressure relief valve onto the cold to bring it down to 2 bar and have a pump onto the hot from the cylinder?

 

[stem]

The usual method of installation is to run a cold feed from the same storage tank that supplies the hot water cylinder. That way, the hot and cold pressures are more or less identical. You can boost both with a twin impeller pump if required.

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• stem
• 18 Aug 2009
• 6

 

[gavlanc]

stem wrote:
The usual method of installation is to run a cold feed from the same storage tank that supplies the hot water cylinder. That way, the hot and cold pressures are more or less identical. You can boost both with a twin impeller pump if required.




Thanks for that.

I understand that the method you have described is the best way to do it but would the way i described work?

 

[stem]

I'm not too sure , but in theory if the cold mains pressure and the hot water pumped pressure are fairly equal you stand a chance.

You would probably need to check the operating specification of the mixer you were planning to use too. I imagine a thermostatic mixer may give better control than a manual one that just regulates flow.

maybe someone will be along soon with something a bit more definitive.