New boiler output pressure (bar)?
- Thread starter Londoner
- Start date
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Above the basin was a huge mirror. Behind the towel rail I can't remember - at the time I seem to recall them not being sure as there was a pocket door and next to no structure to the wall.
Hansgrohe replied to me to say both showers would be fine with the combi boiler model I was thinking off. I'm not expecting it to be as powerful as with the Salamander but as long as they function, that's fine. May just have to go with it and see what happens.
It depends on the shower heads.
The OP needs to measure things - as told to several times.
The last Raindance I fitted had a monster head and no combi would give it a decent performance.
Perhaps they have more efficient ones now?
Overpriced kit IMO; but easy to install.
We have a larger overhead plus a handshower coming off a dual controller. Hansgrohe assure me only 1 bar input pressure is reqd, and the Worcester Bosch boiler I linked would be ok.
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absolute rubbish inlet pressure means nothing whatsoever, you have been correctly advised many times you need to measure the dynamic flow rate of your supply, there is no other way !!!!!
OP you need to do a little learning about what dynamic flow rate means.
A combi only gives about 9-14 litres per minute.
Your mains supply may not be capable of supplying that kind of dynamic flow.
An open pipe flow rate is NOT the same thing but by aware that many plumbers don't understand the difference!
Tony
A combi only gives about 9-14 litres per minute.
Your mains supply may not be capable of supplying that kind of dynamic flow.
An open pipe flow rate is NOT the same thing but by aware that many plumbers don't understand the difference!
Tony
Thanks for all the comments. What is confusing me is that the Hansgrohe technical info only talks about the water pressure going INTO the shower, which is recommended to be between 1-6 bar (3 optimum). Nothing about flow rate. It is a pressure measurement going into the shower that they specify.
See link http://www.hansgrohe.co.uk/productdetail.html?category=C0000000000203&model=28504XXX
and the heading 'Operating Pressure'
I also know that my mains pressure dictates what boiler I can install, or whether I can opt for an unvented system. I get all that.
If Hansgrohe specify the pressure (bar) that they need going into the shower, what is the relevance of measuring the flow rate from the mains? The water won't be coming direct from the mains to the shower, if it will be coming via the boiler.
All boiler outputs seem to be in L/min. How do I relate this to the Hansgrohe info that only talks about pressure (bar) needed for their showers to work?
See link http://www.hansgrohe.co.uk/productdetail.html?category=C0000000000203&model=28504XXX
and the heading 'Operating Pressure'
I also know that my mains pressure dictates what boiler I can install, or whether I can opt for an unvented system. I get all that.
If Hansgrohe specify the pressure (bar) that they need going into the shower, what is the relevance of measuring the flow rate from the mains? The water won't be coming direct from the mains to the shower, if it will be coming via the boiler.
All boiler outputs seem to be in L/min. How do I relate this to the Hansgrohe info that only talks about pressure (bar) needed for their showers to work?
Jesus. If you don't understand what has been explained already you have no chance. Get a professional in.
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