modern condensing boiler vs. dacades old standard boiler,
 

John Rumm wrote:
Nightjar "cpb"@ insertmysurnamehere wrote:

It would seem to be a simple enough question. Is an unvented
cylinder at mains pressure a greater danger than two similarly sized
air receivers working at 11 bar?

yes.

So, something that is designed to work at about 6 bar and that
normally contains an incompressible fluid is more dangerous than
something working at nearly twice the pressure and that normally
contains highly compressed gas? You really have no idea what you are
talking about.


I wonder if dribble has ever pondered why tests of steam boilers etc are
carried out with water rather than gas?

That would involve rational thought and at least some understanding of
why and how pressure vessels explode.

Colin Bignell

modern condensing boiler vs. dacades old standard boiler,
 

"Nightjar "cpb"@" "insertmysurnamehere wrote in message
...
Doctor Drivel wrote:

"Nightjar "cpb"@" "insertmysurnamehere wrote in message
...
Doctor Drivel wrote:

"Nightjar "cpb"@" "insertmysurnamehere wrote in message
...
Doctor Drivel wrote:

"Nightjar "cpb"@" "insertmysurnamehere wrote in message
...
...
Reliability is more about make than type, although a system
(regular-type) boiler is less complex than a combination boiler.

Not much at all. A combi is system boiler with a 3-way valve and a
plate heat exchanger for DHW. 90% is the same.

That is still more complex than a system boiler.

Not much.

The other advantage of a system boiler is that the hot water is
stored in a tank, which can have a backup immersion heater and that
gives you belts and braces cover.

An in-line instant electric heater can be fitted in the combi outlet.
A small box say under the sink.

They are fairly useless if you want to fill a bath though.

It is for backup and will do a shower.

I don't have a shower or a shower attachment.

Some will fill a bath slowly.

I don't want to fill a bath slowly

It is backup you silly pillock! You ****ed up and bought the wrong system.
Get used to it. You haven't a clue. A know it all you knows **** all. Go
and live in Essex.

modern condensing boiler vs. dacades old standard boiler,
 

"John Rumm" wrote in message
o.uk...
Nightjar "cpb"@ insertmysurnamehere wrote:

It would seem to be a simple enough question. Is an unvented cylinder
at mains pressure a greater danger than two similarly sized air
receivers working at 11 bar?

yes.

So,

This man is from Essex.

modern condensing boiler vs. dacades old standard boiler,
 

"Nightjar "cpb"@" "insertmysurnamehere wrote in message
...
John Rumm wrote:
Nightjar "cpb"@ insertmysurnamehere wrote:

It would seem to be a simple enough question. Is an unvented cylinder
at mains pressure a greater danger than two similarly sized air
receivers working at 11 bar?

yes.

So, something that is designed to work at about 6 bar and that normally
contains an incompressible fluid is more dangerous than something
working at nearly twice the pressure and that normally contains highly
compressed gas? You really have no idea what you are talking about.


I

This man should live in Essex.

modern condensing boiler vs. dacades old standard boiler,
 

On 03/05/2010 21:12, AL_z wrote:
My last c/h boiler was a combi, and it broke down about once a year, on
average. Conversely, my parents had an old regular-type boiler (i.e., not a
combi) which never needed any maintenance in about 30 years. I now want to
install a c/h system in my new house. So, regarding my choice of boiler:
Considering the cost of purchasing, plus the cost of maintenance balanced
out against the difference in thermal efficiency, might I be doing myself a
favour by installing a cheap, old, reliable, standard boiler, say from a
demolition yard, rather than forking out for a modern condensing combi?

Take an old gas cooker oven and install some sort of heat exhanger
matrix piping water in and and out. A few car radiators maybe?

How reliable, efficient, legal or stupid would that be?

--
Adrian C

modern condensing boiler vs. dacades old standard boiler,
 

On 06/05/2010 00:49, Adrian C wrote:
favour by installing a cheap, old, reliable, standard boiler, say from a
demolition yard, rather than forking out for a modern condensing combi?

Take an old gas cooker oven and install some sort of heat exhanger
matrix piping water in and and out. A few car radiators maybe?

How reliable, efficient, legal or stupid would that be?


Sorry, just read the rest of the thread and am jostling to look like a
greater idiot than the other one. Please disregard, I should get to bed...

--
Adrian C

modern condensing boiler vs. dacades old standard boiler,
 

"John Rumm" wrote in message
o.uk...
Nightjar "cpb"@ insertmysurnamehere wrote:
John Rumm wrote:
Nightjar "cpb"@ insertmysurnamehere wrote:

It would seem to be a simple enough question. Is an unvented cylinder
at mains pressure a greater danger than two similarly sized air
receivers working at 11 bar?

yes.

So, something that is designed to work at about 6 bar and that normally
contains an incompressible fluid is more dangerous than something
working at nearly twice the pressure and that normally contains highly
compressed gas? You really have no idea what you are talking about.


I wonder if dribble has ever pondered why tests of steam boilers etc are
carried out with water rather than gas?

That would involve rational thought and at least some understanding of
why and how pressure vessels explode.

Now we have highlighted

You are an idiotic Essex Chav!

modern condensing boiler vs. dacades old standard boiler,
 

"Adrian C" wrote in message
...

Sorry, just read the rest of the thread and am jostling to look like a
greater idiot than the other one.

You are a bigger idiot than the Essex Chav.

modern condensing boiler vs. dacades old standard boiler,
 

"John Rumm" wrote in message
o.uk...

Reliable - so so, until the rads fail due to high heat stress or
pressure, or get clogged up with soot.

Soot? He hasn't a clue!!!!!! He is from Essex you know.

modern condensing boiler vs. dacades old standard boiler,
 

Doctor Drivel wrote:

"Nightjar "cpb"@" "insertmysurnamehere wrote in message
...
Doctor Drivel wrote:
....
I don't want to fill a bath slowly

It is backup you silly pillock! You ****ed up and bought the wrong
system...

I bought the system that will do what I want, not what you think I
should want.

Colin Bignell

modern condensing boiler vs. dacades old standard boiler,
 

"Nightjar "cpb"@" "insertmysurnamehere wrote in message
...
Doctor Drivel wrote:

"Nightjar "cpb"@" "insertmysurnamehere wrote in message
...
Doctor Drivel wrote:
...
I don't want to fill a bath slowly

It is backup you silly pillock! You ****ed up and bought the wrong
system...

I bought the system that will do what I want, not what you think I should
want.

You do not know what you want. you haven't clue what the superior
alternatives are. No one in their right mind buys a potential bomb!!! You
even bought an overpriced boiler as well.

An ATAG 51kW or W-B 550 combi would have been cheaper and done everything
you want and more - and save space and not go bang!!!!!!!
Bangggggggggggg!!!!

modern condensing boiler vs. dacades old standard boiler,
 

"John Rumm" wrote in message
o.uk...
Doctor Drivel wrote:

"John Rumm" wrote in message
o.uk...
Nightjar "cpb"@ insertmysurnamehere wrote:
John Rumm wrote:
Nightjar "cpb"@ insertmysurnamehere wrote:

It would seem to be a simple enough question. Is an unvented
cylinder at mains pressure a greater danger than two similarly
sized air receivers working at 11 bar?

yes.

So, something that is designed to work at about 6 bar and that
normally contains an incompressible fluid is more dangerous than
something working at nearly twice the pressure and that normally
contains highly compressed gas? You really have no idea what you are
talking about.


I wonder if dribble has ever pondered why tests of steam boilers etc
are carried out with water rather than gas?

That would involve rational thought and at least some understanding of
why and how pressure vessels explode.

Now we have highlighted

You are an idiotic Essex Chav!

You are an idiotic Essex Chav!

modern condensing boiler vs. dacades old standard boiler,
 

"John Rumm" wrote in message
o.uk...
Adrian C wrote:
On 06/05/2010 00:49, Adrian C wrote:
favour by installing a cheap, old, reliable, standard boiler, say from
a
demolition yard, rather than forking out for a modern condensing combi?

Take an old gas cooker oven and install some sort of heat exhanger
matrix piping water in and and out. A few car radiators maybe?

How reliable, efficient, legal or stupid would that be?


Sorry, just read the rest of the thread and am jostling to look like a
greater idiot than the other one. Please disregard, I should get to
bed...

Not much danger of that

There is, you are from Essex!

modern condensing boiler vs. dacades old standard boiler,
 

Doctor Drivel wrote:

"Nightjar "cpb"@" "insertmysurnamehere wrote in message
...
Doctor Drivel wrote:

"Nightjar "cpb"@" "insertmysurnamehere wrote in message
...
Doctor Drivel wrote:
...
I don't want to fill a bath slowly

It is backup you silly pillock! You ****ed up and bought the wrong
system...

I bought the system that will do what I want, not what you think I
should want.

You do not know what you want. you haven't clue what the superior
alternatives are.

Superior? Read the comments from ultracynic (4th), nissan (7th) and
complete-heat (9th) he

http://www.sheffieldforum.co.uk/showthread.php?t=306833

Or the comments he

http://forums.moneysavingexpert.com/...d.php?t=779745

No one in their right mind buys a potential bomb!!!

As John pointed out, it would require multiple system failures to make a
domestic unvented hot water cylinder dangerous. They are common in
France and there is no history of a serious risk of explosion as a result.

You even bought an overpriced boiler as well.

That must make the ATAG very overpriced. The best price I can find for
the smallest system boiler in the range is 50% more than I paid for the
Vaillant

An ATAG 51kW or W-B 550 combi would have been cheaper and done
everything you want,

Except give me an immersion heater backup.

and more - and save space

Not a problem. I had the side porch built with more than enough spare
room to mount both boiler and hot water cylinder and still leave me room
for a tumble dryer.

and not go bang!!!!!!!

How is the hot water cylinder built into the ATAG 51kW combination
boiler safer than an external hot water cylinder?

Colin Bignell

modern condensing boiler vs. dacades old standard boiler,
 

In article ,
Doctor Drivel wrote:
"John Rumm" wrote in message
o.uk...
Now we have highlighted this lack of understanding, he will either
have to carry on prattling about explosions - confirming his complete
lack of a clue, or he will have to switch to insults / or the usual
barrage of non sequiturs - confirming his complete lack of clue, but
at least acknowledging that he knows he is clueless.

I wonder which it will be?

You are an idiotic Essex Chav!

No surprises there, then.

--
*Middle age is when it takes longer to rest than to get tired.

Dave Plowman London SW
To e-mail, change noise into sound.

modern condensing boiler vs. dacades old standard boiler,
 

In article ,
Nightjar \cpb\@ insertmysurnamehere wrote:
How is the hot water cylinder built into the ATAG 51kW combination
boiler safer than an external hot water cylinder?

It's inside a box. Dribble doesn't understand things like that. They don't
tell you what happens inside the box in sort of advert he can understand.

--
*I never drink anything stronger than gin before breakfast *

Dave Plowman London SW
To e-mail, change noise into sound.

modern condensing boiler vs. dacades old standard boiler,
 

"Dave Plowman (News)" wrote in message
...
In article ,
Nightjar \cpb\@ insertmysurnamehere wrote:
How is the hot water cylinder built into the ATAG 51kW combination
boiler safer than an external hot water cylinder?

It's

Please eff off as you are a plantpot

modern condensing boiler vs. dacades old standard boiler,
 

"Dave Plowman (News)" wrote in message
...
In article ,
Doctor Drivel wrote:
"John Rumm" wrote in message
o.uk...
Now we have highlighted this lack of understanding, he will either
have to carry on prattling about explosions - confirming his complete
lack of a clue, or he will have to switch to insults / or the usual
barrage of non sequiturs - confirming his complete lack of clue, but
at least acknowledging that he knows he is clueless.

I wonder which it will be?

You are an idiotic Essex Chav!

No surprises there, then.

No surpise at all.

modern condensing boiler vs. dacades old standard boiler,
 

On May 6, 12:59*am, John Rumm wrote:
Adrian C wrote:
On 03/05/2010 21:12, AL_z wrote:
My last c/h boiler was a combi, and it broke down about once a year, on
average. Conversely, my parents had an old regular-type boiler (i.e.,
not a
combi) which never needed any maintenance in about 30 years. I now
want to
install a c/h system in my new house. So, regarding my choice of boiler:
Considering the cost of purchasing, plus the cost of maintenance balanced
out against the difference in thermal efficiency, might I be doing
myself a
favour by installing a cheap, old, reliable, standard boiler, say from a
demolition yard, rather than forking out for a modern condensing combi?

Take an old gas cooker oven and install some sort of heat exhanger
matrix piping water in and and out. A few car radiators maybe?

How reliable, efficient, legal or stupid would that be?

Reliable - so so, until *the rads fail due to high heat stress or
pressure, or get clogged up with soot.

Efficiency - pants

legal - possibly since you could probably avoid modifying the gas
appliance.

Power output - about as dismal as half an electric shower!

Still, as ideas go it a fair bit more credible than some of dribbles. ;-)


Best efficiency is had with direct contact... maybe you could arrange
a water feature in the oven


NT

modern condensing boiler vs. dacades old standard boiler,
 

"John Rumm" wrote in message
...
NT wrote:

Best efficiency is had with direct contact... maybe you could arrange
a water feature in the oven

I am sure our resident bridge guardian could knock something suitable up
in plastic pipe with his trusty hacksaw.

Oh my God! This Chav is putting plastic pipe in an oven.

modern condensing boiler vs. dacades old standard boiler,
 

In message , John
Rumm writes
NT wrote:

Best efficiency is had with direct contact... maybe you could arrange
a water feature in the oven

I am sure our resident bridge guardian could knock something suitable
up in plastic pipe with his trusty hacksaw.


Somewhere in the suburbs of Dampfoot


--
geoff