Please please help...
Q1. I have a bath waste/filler/overflow trio (made by Viega) it has only one 22mm water input to it, has no specification for flow rate or minimum pressure, no on/off etc. it is basically a spout.
I am running a flexicom 30cx combination boiler.
I currently have, but not yet fitted an exposed thermostatic shower valve (one way).
I was planning to put taps in the wall for the bath and mix the water through a T piece into the bath filler, but have now been told I cannot do this because:
a) the flow of cold water into the hot may cause too much pressure (imbalanced) and damage the boiler.
b) the flow rate would be reduced a lot
c) I would not be able to maintain a balanced temperature
(There is no space for taps on the bath and the wall is too thin anyway)
I have therefore been given the options of:
a) Fixing a diverter valve into the existing thermostatic shower system – but because the shower valve is exposed and the shower hose comes off the bottom, this will be very tricky.
b) to return the thermostatic valve and change it for a new two way diverter which I can conceal in the wall
c) to buy a separate thermostatic valve for the bath alone.
Q2. I am concerned that I do not want the bath to take longer than necessary to fill, my boiler runs at approximately 12 L/ps and it is a big bath! I have no idea what the pressure is that it runs at but have been advised normally a combi is high pressure 1.5 to 3 bar?
I have one narrow wall space that will be deep enough for a concealed thermostatic mixer.
Q3. If I go down the route of a thermostatic mixer then I would require a 22mm outlet to the bath to maintain the flow – do the thermostatic valves have a 22mm output to the bat and a 15 to the shower or are they all 15mm?
I would be most obliged if anyone could assist in confirming or otherwise what I have been told, and to advise me on a suitable way and system to fix my needs.
Q4. If I buy a new valve with a minimum operating pressure of 1 bar will this reduce the pressure of water coming out more than a valve with a minimum pressure of say 0.1 bar?
Sorry lots of questions but please help before I loose all my hair!
Q1. I have a bath waste/filler/overflow trio (made by Viega) it has only one 22mm water input to it, has no specification for flow rate or minimum pressure, no on/off etc. it is basically a spout.
I am running a flexicom 30cx combination boiler.
I currently have, but not yet fitted an exposed thermostatic shower valve (one way).
I was planning to put taps in the wall for the bath and mix the water through a T piece into the bath filler, but have now been told I cannot do this because:
a) the flow of cold water into the hot may cause too much pressure (imbalanced) and damage the boiler.
b) the flow rate would be reduced a lot
c) I would not be able to maintain a balanced temperature
(There is no space for taps on the bath and the wall is too thin anyway)
I have therefore been given the options of:
a) Fixing a diverter valve into the existing thermostatic shower system – but because the shower valve is exposed and the shower hose comes off the bottom, this will be very tricky.
b) to return the thermostatic valve and change it for a new two way diverter which I can conceal in the wall
c) to buy a separate thermostatic valve for the bath alone.
Q2. I am concerned that I do not want the bath to take longer than necessary to fill, my boiler runs at approximately 12 L/ps and it is a big bath! I have no idea what the pressure is that it runs at but have been advised normally a combi is high pressure 1.5 to 3 bar?
I have one narrow wall space that will be deep enough for a concealed thermostatic mixer.
Q3. If I go down the route of a thermostatic mixer then I would require a 22mm outlet to the bath to maintain the flow – do the thermostatic valves have a 22mm output to the bat and a 15 to the shower or are they all 15mm?
I would be most obliged if anyone could assist in confirming or otherwise what I have been told, and to advise me on a suitable way and system to fix my needs.
Q4. If I buy a new valve with a minimum operating pressure of 1 bar will this reduce the pressure of water coming out more than a valve with a minimum pressure of say 0.1 bar?
Sorry lots of questions but please help before I loose all my hair!
