power shower


Postby ukbill » Fri May 21, 2010 9:59 am

I have a power shower in my bathroom,and now would like to fir another power shower in my onsuite shower room,can the new shower be t'd off the existing hot and cold feed
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Postby plumbbob » Sat May 22, 2010 1:23 pm

It depends on what you mean by a "power shower". Do you mean a combined pump and shower in a single unit or a separate mixer valve and pump?
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Postby ukbill » Sun May 23, 2010 10:47 am

no a combined all in 1 power shower
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Postby plumbbob » Sun May 23, 2010 8:11 pm

Obviously if the two showers are used independently, each will work satisfactorily. If the showers are ever run together, and you must assume they could, it is more than likely there will be problems.

Certainly a 'proper' installation would see separate supplies from both the header tank (which should be increased in size) and the DHW cylinder. The feed from the header to the DHW cylinder should be increased from 22mm to 28mm too.

Unless you are using a Surrey flange to draw the hot, two showers could significantly increase the chance of sucking air into the hot feed.

If the existing feeds to the shower where 22mm it is possible you may get away with it, but I am not confident as I have never experienced it being done that way.
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