Hi,

Hopefully some one can help or point me in the right direction to get
help on this. We got a new Combi boiler (Glowworm 30CXi) and
thermostatic Shower (Quatra by Crosswater I think from the bathstore)
last October. At the time the shower seemed fine and hot, however we
never used it much until the bathroom was tiled over. When we started
using it regularly in November, I found it ok not very hot where as
the wife, who likes a hot shower found it cold. All the other hot taps
in bath and kitchen produced scaling hot water. Eventually as the
winter wore on, I too found it too cold and the only way to have a hot
shower was to turn on the cold water tap on the bath. This was
inconvenient, but we had 101 other things going on in our lives to try
and fix it back then, so we lived with this inconvenience. Now however
in summer the opposite has happened and the shower is scaling, turning
the exposed temperature valve/knob to min and turning the water
temperature on the combi to minimum (without turning it off) makes no
difference. Even turning on the hot tap in the bathroom makes no
difference, the pressure drops but the temperature is still too hot.
We’ve ended up going to the gym to have cooler showers. I rang the
plumber and he blamed first the boiler, “should have went with
worcester bosch” and then blaming the thermostatic value. So I want to
educate my self on possible causes so I can confront him to fix it (if
it is indeed an installation error).

Cheers
Adrian

"ado"  wrote in message 
news:2239b5d2-85bb-4fcb-a0e2-66362603286b@34g2000hsh.googlegroups.com...
Hi,

Hopefully some one can help or point me in the right direction to get
help on this. We got a new Combi boiler (Glowworm 30CXi) and
thermostatic Shower (Quatra by Crosswater I think from the bathstore)
last October. At the time the shower seemed fine and hot, however we
never used it much until the bathroom was tiled over. When we started
using it regularly in November, I found it ok not very hot where as
the wife, who likes a hot shower found it cold. All the other hot taps
in bath and kitchen produced scaling hot water. Eventually as the
winter wore on, I too found it too cold and the only way to have a hot
shower was to turn on the cold water tap on the bath. This was
inconvenient, but we had 101 other things going on in our lives to try
and fix it back then, so we lived with this inconvenience. Now however
in summer the opposite has happened and the shower is scaling, turning
the exposed temperature valve/knob to min and turning the water
temperature on the combi to minimum (without turning it off) makes no
difference. Even turning on the hot tap in the bathroom makes no
difference, the pressure drops but the temperature is still too hot.
We’ve ended up going to the gym to have cooler showers. I rang the
plumber and he blamed first the boiler, “should have went with
worcester bosch” and then blaming the thermostatic value. So I want to
educate my self on possible causes so I can confront him to fix it (if
it is indeed an installation error).

Cheers
Adrian

I had a problem of mine not being hot enough in the winter. This was due to 
the water entering my combi being very cold - and the shower having a high 
flow rate (13 litres minute). The combi was struggling to keep pace. I fixed 
it by fitting a flow restrictor (from Mira) in the hose outlet. This reduces 
the flow to a more manageable 9 litres a minute which is more within the 
capabilities of the boiler ( and it no longer knock my grandson over). 
However, this won't help your summer problem. - Unless you have some shut 
off valves somewhere and the cold water has been throttled back a bit to 
help the winter problem

On Jun 30, 6:36 pm, "John"  wrote:
> "ado"  wrote in message
>
> news:2239b5d2-85bb-4fcb-a0e2-66362603286b@34g2000hsh.googlegroups.com...

> Hi,
>
> Hopefully some one can help or point me in the right direction to get
> help on this. We got a new Combi boiler (Glowworm 30CXi) and
> thermostatic Shower (Quatra by Crosswater I think from the bathstore)
> last October. At the time the shower seemed fine and hot, however we
> never used it much until the bathroom was tiled over. When we started
> using it regularly in November, I found it ok not very hot where as
> the wife, who likes a hot shower found it cold. All the other hot taps
> in bath and kitchen produced scaling hot water. Eventually as the
> winter wore on, I too found it too cold and the only way to have a hot
> shower was to turn on the cold water tap on the bath. This was
> inconvenient, but we had 101 other things going on in our lives to try
> and fix it back then, so we lived with this inconvenience. Now however
> in summer the opposite has happened and the shower is scaling, turning
> the exposed temperature valve/knob to min and turning the water
> temperature on the combi to minimum (without turning it off) makes no
> difference. Even turning on the hot tap in the bathroom makes no
> difference, the pressure drops but the temperature is still too hot.
> We’ve ended up going to the gym to have cooler showers. I rang the
> plumber and he blamed first the boiler, “should have went with
> worcester bosch” and then blaming the thermostatic value. So I want to
> educate my self on possible causes so I can confront him to fix it (if
> it is indeed an installation error).
>
> Cheers
> Adrian
>
> I had a problem of mine not being hot enough in the winter. This was due to
> the water entering my combi being very cold - and the shower having a high> flow rate (13 litres minute). The combi was struggling to keep pace. I fixed
> it by fitting a flow restrictor (from Mira) in the hose outlet. This reduces
> the flow to a more manageable 9 litres a minute which is more within the
> capabilities of the boiler ( and it no longer knock my grandson over).
> However, this won't help your summer problem. - Unless you have some shut
> off valves somewhere and the cold water has been throttled back a bit to
> help the winter problem

Problems like that tend to respond to turning the water flow down at
the shower. If it makes no difference, I can only see it being the
'static shower thats the probelm. I'm no plumbing expert tho, prefer
to avoid it.


NT

On 30 Jun, 23:30, meow2...@care2.com wrote:
> On Jun 30, 6:36 pm, "John"  wrote:
>
>
>
>
>
> > "ado"  wrote in message
>
> >news:2239b5d2-85bb-4fcb-a0e2-66362603286b@34g2000hsh.googlegroups.com...
> > Hi,
>
> > Hopefully some one can help or point me in the right direction to get
> > help on this. We got a new Combi boiler (Glowworm 30CXi) and
> > thermostatic Shower (Quatra by Crosswater I think from the bathstore)
> > last October. At the time the shower seemed fine and hot, however we
> > never used it much until the bathroom was tiled over. When we started
> > using it regularly in November, I found it ok not very hot where as
> > the wife, who likes a hot shower found it cold. All the other hot taps
> > in bath and kitchen produced scaling hot water. Eventually as the
> > winter wore on, I too found it too cold and the only way to have a hot
> > shower was to turn on the cold water tap on the bath. This was
> > inconvenient, but we had 101 other things going on in our lives to try
> > and fix it back then, so we lived with this inconvenience. Now however
> > in summer the opposite has happened and the shower is scaling, turning
> > the exposed temperature valve/knob to min and turning the water
> > temperature on the combi to minimum (without turning it off) makes no
> > difference. Even turning on the hot tap in the bathroom makes no
> > difference, the pressure drops but the temperature is still too hot.
> > We’ve ended up going to the gym to have cooler showers. I rang the
> > plumber and he blamed first the boiler, “should have went with
> > worcester bosch” and then blaming the thermostatic value. So I want to> > educate my self on possible causes so I can confront him to fix it (if
> > it is indeed an installation error).
>
> > Cheers
> > Adrian
>
> > I had a problem of mine not being hot enough in the winter. This was due to
> > the water entering my combi being very cold - and the shower having a high
> > flow rate (13 litres minute). The combi was struggling to keep pace. I fixed
> > it by fitting a flow restrictor (from Mira) in the hose outlet. This reduces
> > the flow to a more manageable 9 litres a minute which is more within the> > capabilities of the boiler ( and it no longer knock my grandson over).
> > However, this won't help your summer problem. - Unless you have some shut
> > off valves somewhere and the cold water has been throttled back a bit to> > help the winter problem
>
> Problems like that tend to respond to turning the water flow down at
> the shower. If it makes no difference, I can only see it being the
> 'static shower thats the probelm. I'm no plumbing expert tho, prefer
> to avoid it.
>
> NT- Hide quoted text -
>
> - Show quoted text -

Hi Guys,

Thanks for the responses,

Cold Water in winter:
I didnt think the shower was overly powerful but there is a good flow
rate. So a flow restricter would reduce the speed at which the water
flows through the boiler and allow the boiler to heat up the water
better. Is this what is currently happening when I turned on the cold
water bath tap in winter a little, which reduces the pressure on the
shower a bit but caused the shower to go hotter? Unfortunately our
pipes are all tiled over and the shower head is a fixed one, so can
the flow restricter sit between the shower head arm and the pipes?
Also how would this differ from turning down the power of the shower
using the flow control know on the shower? I guess I can't test this
out now until winter as at the moment the water is just mad hot.


Hot Water in Summer (or more importantly no cold water):
I am assured it is a thermostatic shower value. There are only two
knobs on it, a temp control and a flow control. Its not possible to
control the mix manually, but yea its not behaving as a thermostatic
valve as there is little or no difference when the temp control is set
to hot and when its set to cold.

There is a restriction Value on the Bath taps set to reduced but not
the shower (I think). Basically the mains water comes into our flat
before splitting in two and 1 goes to the flat upstairs as their mains
and the other is ours. Because it comes into our flat first upstairs
asked us to restrict the flow on the bath as when the previous owners
turned on the bath fully their shower was rendered useless as we took
all the water. So we agreed as it just meant the bath filled a little
slower and we didnt use the bath much. So is this the source of our
lack of cold water going to the shower?

Cheers
Adrian

On 1 Jul, 12:47, ado  wrote:
> On 30 Jun, 23:30, meow2...@care2.com wrote:
>
>
>
> > On Jun 30, 6:36 pm, "John"  wrote:
>
> > > "ado"  wrote in message
>
> > >news:2239b5d2-85bb-4fcb-a0e2-66362603286b@34g2000hsh.googlegroups.com.> > > Hi,
>
> > > Hopefully some one can help or point me in the right direction to get
> > > help on this. We got a new Combi boiler (Glowworm 30CXi) and
> > > thermostatic Shower (Quatra by Crosswater I think from the bathstore)
> > > last October. At the time the shower seemed fine and hot, however we
> > > never used it much until the bathroom was tiled over. When we started
> > > using it regularly in November, I found it ok not very hot where as
> > > the wife, who likes a hot shower found it cold. All the other hot taps
> > > in bath and kitchen produced scaling hot water. Eventually as the
> > > winter wore on, I too found it too cold and the only way to have a hot
> > > shower was to turn on the cold water tap on the bath. This was
> > > inconvenient, but we had 101 other things going on in our lives to try
> > > and fix it back then, so we lived with this inconvenience. Now however
> > > in summer the opposite has happened and the shower is scaling, turning
> > > the exposed temperature valve/knob to min and turning the water
> > > temperature on the combi to minimum (without turning it off) makes no
> > > difference. Even turning on the hot tap in the bathroom makes no
> > > difference, the pressure drops but the temperature is still too hot.
> > > We’ve ended up going to the gym to have cooler showers. I rang the
> > > plumber and he blamed first the boiler, “should have went with
> > > worcester bosch” and then blaming the thermostatic value. So I want to
> > > educate my self on possible causes so I can confront him to fix it (if
> > > it is indeed an installation error).
>
> > > Cheers
> > > Adrian
>
> > > I had a problem of mine not being hot enough in the winter. This was due to
> > > the water entering my combi being very cold - and the shower having a high
> > > flow rate (13 litres minute). The combi was struggling to keep pace. I fixed
> > > it by fitting a flow restrictor (from Mira) in the hose outlet. This reduces
> > > the flow to a more manageable 9 litres a minute which is more within the
> > > capabilities of the boiler ( and it no longer knock my grandson over)> > > However, this won't help your summer problem. - Unless you have some shut
> > > off valves somewhere and the cold water has been throttled back a bit to
> > > help the winter problem
>
> > Problems like that tend to respond to turning the water flow down at
> > the shower. If it makes no difference, I can only see it being the
> > 'static shower thats the probelm. I'm no plumbing expert tho, prefer
> > to avoid it.
>
> > NT- Hide quoted text -
>
> > - Show quoted text -
>
> Hi Guys,
>
> Thanks for the responses,
>
> Cold Water in winter:
> I didnt think the shower was overly powerful but there is a good flow
> rate. So a flow restricter would reduce the speed at which the water
> flows through the boiler and allow the boiler to heat up the water
> better. Is this what is currently happening when I turned on the cold
> water bath tap in winter a little, which reduces the pressure on the
> shower a bit but caused the shower to go hotter? Unfortunately our
> pipes are all tiled over and the shower head is a fixed one, so can
> the flow restricter sit between the shower head arm and the pipes?
> Also how would this differ from turning down the power of the shower
> using the flow control know on the shower? I guess I can't test this
> out now until winter as at the moment the water is just mad hot.
>
> Hot Water in Summer (or more importantly no cold water):
> I am assured it is a thermostatic shower value. There are only two
> knobs on it, a temp control and a flow control. Its not possible to
> control the mix manually, but yea its not behaving as a thermostatic
> valve as there is little or no difference when the temp control is set
> to hot and when its set to cold.
>
> There is a restriction Value on the Bath taps set to reduced but not
> the shower (I think). Basically the mains water comes into our flat
> before splitting in two and 1 goes to the flat upstairs as their mains
> and the other is ours. Because it comes into our flat first upstairs
> asked us to restrict the flow on the bath as when the previous owners
> turned on the bath fully their shower was rendered useless as we took
> all the water. So we agreed as it just meant the bath filled a little
> slower and we didnt use the bath much. So is this the source of our
> lack of cold water going to the shower?
>
> Cheers
> Adrian

Could themo valve be connected back to front (hot to hot, cold to
cold) ?
So if the temp is too low, it makes it lower, if too high it makes it
higher.
Not sure if they would react like this though. Also, there is usually
a high temp cutoff, but this may not work if the connections are
reversed.
Simon.

On 1 Jul, 13:22, sm_jamieson  wrote:
> On 1 Jul, 12:47, ado  wrote:
>
>
>
> > On 30 Jun, 23:30, meow2...@care2.com wrote:
>
> > > On Jun 30, 6:36 pm, "John"  wrote:
>
> > > > "ado"  wrote in message
>
> > > >news:2239b5d2-85bb-4fcb-a0e2-66362603286b@34g2000hsh.googlegroups.com> > > > Hi,
>
> > > > Hopefully some one can help or point me in the right direction to get
> > > > help on this. We got a new Combi boiler (Glowworm 30CXi) and
> > > > thermostatic Shower (Quatra by Crosswater I think from the bathstore> > > > last October. At the time the shower seemed fine and hot, however we> > > > never used it much until the bathroom was tiled over. When we started
> > > > using it regularly in November, I found it ok not very hot where as
> > > > the wife, who likes a hot shower found it cold. All the other hot taps
> > > > in bath and kitchen produced scaling hot water. Eventually as the
> > > > winter wore on, I too found it too cold and the only way to have a hot
> > > > shower was to turn on the cold water tap on the bath. This was
> > > > inconvenient, but we had 101 other things going on in our lives to try
> > > > and fix it back then, so we lived with this inconvenience. Now however
> > > > in summer the opposite has happened and the shower is scaling, turning
> > > > the exposed temperature valve/knob to min and turning the water
> > > > temperature on the combi to minimum (without turning it off) makes no
> > > > difference. Even turning on the hot tap in the bathroom makes no
> > > > difference, the pressure drops but the temperature is still too hot.> > > > We’ve ended up going to the gym to have cooler showers. I rang the> > > > plumber and he blamed first the boiler, “should have went with
> > > > worcester bosch” and then blaming the thermostatic value. So I want to
> > > > educate my self on possible causes so I can confront him to fix it (if
> > > > it is indeed an installation error).
>
> > > > Cheers
> > > > Adrian
>
> > > > I had a problem of mine not being hot enough in the winter. This was due to
> > > > the water entering my combi being very cold - and the shower having a high
> > > > flow rate (13 litres minute). The combi was struggling to keep pace. I fixed
> > > > it by fitting a flow restrictor (from Mira) in the hose outlet. This reduces
> > > > the flow to a more manageable 9 litres a minute which is more within the
> > > > capabilities of the boiler ( and it no longer knock my grandson over> > > > However, this won't help your summer problem. - Unless you have some shut
> > > > off valves somewhere and the cold water has been throttled back a bit to
> > > > help the winter problem
>
> > > Problems like that tend to respond to turning the water flow down at
> > > the shower. If it makes no difference, I can only see it being the
> > > 'static shower thats the probelm. I'm no plumbing expert tho, prefer
> > > to avoid it.
>
> > > NT- Hide quoted text -
>
> > > - Show quoted text -
>
> > Hi Guys,
>
> > Thanks for the responses,
>
> > Cold Water in winter:
> > I didnt think the shower was overly powerful but there is a good flow
> > rate. So a flow restricter would reduce the speed at which the water
> > flows through the boiler and allow the boiler to heat up the water
> > better. Is this what is currently happening when I turned on the cold
> > water bath tap in winter a little, which reduces the pressure on the
> > shower a bit but caused the shower to go hotter? Unfortunately our
> > pipes are all tiled over and the shower head is a fixed one, so can
> > the flow restricter sit between the shower head arm and the pipes?
> > Also how would this differ from turning down the power of the shower
> > using the flow control know on the shower? I guess I can't test this
> > out now until winter as at the moment the water is just mad hot.
>
> > Hot Water in Summer (or more importantly no cold water):
> > I am assured it is a thermostatic shower value. There are only two
> > knobs on it, a temp control and a flow control. Its not possible to
> > control the mix manually, but yea its not behaving as a thermostatic
> > valve as there is little or no difference when the temp control is set
> > to hot and when its set to cold.
>
> > There is a restriction Value on the Bath taps set to reduced but not
> > the shower (I think). Basically the mains water comes into our flat
> > before splitting in two and 1 goes to the flat upstairs as their mains
> > and the other is ours. Because it comes into our flat first upstairs
> > asked us to restrict the flow on the bath as when the previous owners
> > turned on the bath fully their shower was rendered useless as we took
> > all the water. So we agreed as it just meant the bath filled a little
> > slower and we didnt use the bath much. So is this the source of our
> > lack of cold water going to the shower?
>
> > Cheers
> > Adrian
>
> Could themo valve be connected back to front (hot to hot, cold to
> cold) ?
> So if the temp is too low, it makes it lower, if too high it makes it
> higher.
> Not sure if they would react like this though. Also, there is usually
> a high temp cutoff, but this may not work if the connections are
> reversed.
> Simon.

Of course I meant hot to cold, cold to hot.
Simon.