"Mind Boggles" wrote in message
...
"Doctor Evil" wrote:
A 29kW system boiler will cost about £775 (Glow Worm 30kW system boiler)
250 litre unvented cylinder complete with valves is: £1404 inc all
valves.
Which is £2179.
A Rinnai 32E which saves space as no cylinder, and gives around 25-26
litres/min and does two bathrooms, and NEVER runs out of hot water, and
can
be fitted outside is £863 and £124 for an external guard and the Glow
Worm
to heat the CH at £775, is a total of: £1762. £417 cheaper.
The Rinnai will outlast the unvented cylinder and cannot explode causing
catastrophic damage. It is best to fit a flow switch on the cold supply
to
the Rinnai to switch off the Glow Worm CH boiler to keep gas consumption
within a U6 domestic meter. Wire it in the stat/programmer circuit in
series. When DHW is called (hot tap on) the CH boiler is switched off.
This by far the best solution.
Who the **** would be so stupid
to spend 1400 quid on a unvented
cylinder, which by the way CANNOT
explode
You obviously don't know too much about this. Unvented cylinders "can"
explode if the safety mechanisms fail. When they go it is a full insurance
job. They can take down walls too when they go. Not a nice sight. The
price is from discountedheating web site. A Megaflow with valves.
) when a conventional
cylinder at around 100 quid is, in the
majority of cases just as good.
£100, that is cheap and nasty and will not last long. It also requires a
cold tank and all that pipe too and then you need power shower pumps, which
for a decent one is £250 plus for one shower. Two showers x 2.
I say cannot but given a few
hours to override all the safety features
it might be enough to take off that thick
skull of yours, but we digress.
It is clear you know nothing of this subject. The UK and Ireland are
virtually alone in having the cold tank/cylinder setup. The rest of the
world laugh at the Brits. Most here still think Victoria is on the throne.
The Japanese are well known for
their habit of washing things under
running water rather than sticking a
plug in it,
That they do. And very clean as well.
such a wasteful nation you will not come
across (apart from the yanks).
Their appliances are quite efficient, unlike the Yanks.
A conventional hot water cylinder
feeding a power shower will run until
your skin wrinkles,
And exhausts the cylinder very quickly. You need a large cylinder. In fact
that £1400 for the unvented cylinder was 250 litres, it should be over 300
litres if two high pressure showers are being used for any length of time.
So, that is even more expense, which is £1,515. Going up!
if you are having a bath you want to spend ages
in it not 5 mins, dump the water down the drain and run a fresh one
Although If you are French you'd have a dribbly cold shower lasting
18.5 seconds and come out stinking of garlic and stale sweat.
Oh and by the way £775 + £100
is a lot less than £1762
And the pipework and the cold tank and two power shower pumps. And this £100
cylinder will do two showers with a pump simultaneously? Er no!! So, you
are looking at about £400 for a 300 litre minimum two bathroom job. Then a
quick recovery coil is even more. Then there is all the zone valves etc.
Price is rising here, and all this money for outdated technology that looks
like a school boiler house takes up an amazing amount of space and the rest
of the world laughs at. And then you have to buy the extremely noisy,
vibrating, exopensive power shower pumps too. It's getting worse!
Also "A Rinnai 32E which saves space as no cylinder"
Yet you add a "Glow Worm to heat the CH"
Now this Glow Worm just fits in no space
at all then does it, truly remarkable.
Please read again. Focus a little.
Have you got shares in this jap concern you raving tosspot?
Brainless, you don't know much about this subject do you? Do you work for a
cylinder company. they are crapping themselves because high flow combi's and
now the Japs are here dragging the nation along kicking screaming. Wait
until Tagsaki import here. Condensing 32 litres/minute instant multi-points
that consume 190 cu foot an hour. Brilliant. A Tagsaki or Rinnai will
outlast an unvented cylinder, even one costing more than ant of the
multi-points.
"When DHW is called (hot tap on) the CH boiler is switched off."
Yep.
So unless I fit 800mm of rockwool
in my loft I'll freeze when I'm
having a bath?
You really are not that bright are you? As the multi-point fills the bath
in about 4 to 5 minutes, you will freeze for well, er, er, er, 5 minutes?
So, you r 22C house will drop to freezing consditions in "5 minutes". You
are having a laugh. You are a one.
"It is best to fit a flow switch on the
cold supply to the Rinnai to
switch off the Glow Worm CH boiler to
keep gas consumption within a U6
domestic meter"
...and ther next stupid question..
Nice facility, all approved is it?
Yep. All flow switches are CE rated.
To the original poster, go for the
system boiler it keeps the plumbing
easy plus you loose the header tank
in the loft and keep your existing
hot water tank.
The term is cylinder, not tank. Don't give advice on subjects you clearly
do not know much about.
BTW, two combi's. Highly cost effective. Two Glow Worms: one 24Cxi's costs
£529 and a 30cxi £567 from use less energy, that is only £1096. That is a
total of 178 cu foot per hour and a combined 22 litres/min @ 35C temp rise.
One does upstairs CH with a stat/programmer and one does downstairs - two
separate zones using less fuel. One does one bathroom, one does the other.
Divide and rule and one doesn't influence the other when showers are taken.
Combine the outputs for the baths, where high flows are required.
I know of no cost effective way to get:
- two CH zones,
- condensing technology,
- no water storage so no standing losses,
- not running out of hot water at any time
- liberating space in the house
- eliminating a cylinder,
- no tanks in the loft to give off water vapour promoting condensation up
there.
- high pressure showers.
Less than £1,100 plus two stat/programmers. How is the cylinder business?
Losing ground to superior technology eh?
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