Er, who is that?dynomo said:i passed on the necessary info to the chap involved
That's not right.mains cold water going directly into shower mixer.
Nor is that.non return valves placed on both exit pipes
So, cold mains not directly into the shower valve then? I am confused.+ on the cold water + a pressure balancer prior to mixer.
What's the vertical distance between base of cold storage cistern and shower head (i.e. the bit that sprays)?result:
a shower which only works when u turn the nozzle on the mixer to hot.
on top of that, the shower head needs to be lowered and held in ur hands for the pump to activate!
You would almost certainly breach The Water Regulations in doing this.i came up with a little suggestion of mine, to possible connect both mains pressure cold and tank fed hot to pump, but introduce a pressure reducing valve on the cold prior to the pump.
That sounds crackpot.Pipes exiting the pump will then have a pressure equaliser. This then would activate the pump when the mixer is turned on...
ideas please!!! cheers
Why a double NRV?!dynomo said:cold works fine...it stems from the mains, through a double non return valve...
The height of the HW tank is pretty much irrelevant; it's the height (or pressure) of water feeding the tank that's important.it is the hot side that is creating issues. to activate the pump, u need to turn the nozzle to complete hot on the mixer, but this is only achieved with the shower head held below the tank. (tank sits 1m off the ground)
I don't see how the pump can be 2m from the tank, and yet the pipework runs for 5m to get there. This is merely one droplet that I don't understand, in a whole ocean of things you're writing that I don't understand.the actual pump sits approximately 2m from the tank beneath the tub. the shower head, is at the same distance. however the hot water pipe from the tank runs for approximately 5m before it reaches the pump itself, from here it is t'd off to feed bath and basin taps etc.
Frankly, I'm losing the plot here. Whilst I have absolutely no confusion about how to install a pump, and a tank, and cistern, and a shower, and a bath, and a basin, and the pipework, I'm having no end of trouble relating how it should be done to how you (or someone) has actually gone about doing it.could this distance be the issue?
Why is his willingness a factor if the pump cannot be moved? Don't take this personally, but nearly every statement you make seems to take us a little bit further away from the land of sanity and reason.to narrow this down a little, the guy im trying to help here, is not willing to move the pump, ive seen his setup and it isnt possible.
If you're asking if this will work, then I would say "no".nor can he bring in additional pipes. y cant we limit the pressure of the mains prior to the pump, surely this will work.
Nope, you've lost me there - once again I've opened the door into the room full of dancing penguins led by Gordon Ramsey dressed in nothing but my mother's favourite gingham apron and a bowler hat.that way, we will have continuous flow in the pump which will then activate when the lever on the mixer is either on hot or cold....
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