help with plumbing a shower

[cct]

can anyone help please ,i'm having problems with a shower i've just fitted , if anyone is a plumber i'd be grateful for your advice

[uug197h]

Pm Me some details and i will se if i can help

[cct]

the temp keeps dropping and the pressure is low its run off a combi and the shower is run off the sink taps (previously its own feed)everything is right ie hot n cold to right inlets temp valve has been re-aligned but when it drops in temp the hot waterpipe feeding the shower goes cold .Is the combi not big enough ?

[frogeye]

Hi mate
I am certainly not a plumber, but if I understand you are you saying that when the pressure drops the shower temp goes down?
I have a combi and before I had it sorted I a similar problem ( ish)

If like me you are lucky it will be either a simple need to bleed the radiators and ensure the system runs at the correct pressure - mine is between 1 - 2 bars at hot ( baxi crap - wish I had a worcester bosch) or that weird pressure valve in the boiler need pumping up.

frogeye the plumbers mate - cos I keep paying them

[BDS]

What shower manufacturer and model is it,and is it compatible with your system,and frogeye showers and radiators are seperate

[frogeye]

I only speak as I find - if my pressure in the boiler drops so does the pressure in my shower - there must be a link somewhere?

If I am misguided then no problems - I never was entirely happy with the plumber who installed it.

Time to get my ladybird book of plumbig out again


frogeye reading Dick and Dora's guide to plumbing (how old am I)?

[BDS]

sorry frogeye it might be the way i`m reading it.i`ll need a bit more info first cct then i`ll see if i can help

[Mike jackson]

Assuming it's nothing fancy like with bodyjets it won't be because the combi is not big enough. Even a 24kw combi is capable of giving a good shower.

Most likely problem is lack of flow not activating the flow switch on the combi. Did you flush the pipework before fitting the shower? Inlet filters could be partially blocked.

Don't discount a problem with the boiler. A few years ago I fitted a Mira excell to a system fed by a combi and had a similar problem. All the taps worked fine but the shower kept running cold. It turned out to be a split diaphragm in the alpha boiler, the flow rate through the shower was slightly less than that through the taps and wouldn't quite operate the microswitch on the boiler.

Mike

[frogeye]

Don't discount a problem with the boiler. A few years ago I fitted a Mira excell to a system fed by a combi and had a similar problem. All the taps worked fine but the shower kept running cold. It turned out to be a split diaphragm in the alpha boiler, the flow rate through the shower was slightly less than that through the taps and wouldn't quite operate the microswitch on the boiler.

Mike

roughly what I said

frogeye - confused by the black art of plumbing

[Dave]

Cheers mike...i knew you would come over and help out here.......

[dts]

cct, is the pressure and temp dropping when another tap is being used ie coldtap as this would drop the cold feed pressure from the boiler which does cause these symptoms in most combi boilers.
As of your prob frogeye sounds like you have a leak on your system which would drop the pressure on the boiler and finally the boiler shuts off

If you have anymore probs cct email me and will try and help further

Goodluck

andy