Andy Hall wrote:
On 1 Sep 2005 16:13:49 -0700, wrote:
Andy Hall wrote:
On 31 Aug 2005 15:55:17 -0700, wrote:
Curious. You were talking about renovation of luxury palacial
premises recently.
Yes. Well some have been one bedroom flats, and others 3 bed semis. All
have to be tip top and atractive to sell ASAP to as near to asking
price as possible.
Ah. I see.
Somehow installing a geyser in one (or even out
at the back) doesn't seem to fit that image.....
Image is delivering the flowrate to the body jet showers.
What flow rate? There was a recent thread here indicating that at
least 25-30lpm is needed for such a shower.
The Triton requires around 10 litres a minute minimum. The more the
better. I haven't seen any that state 30 yet.
This is easily
achievable with a storage system.
With more expense and space taken up.
The mid range Rinnai, at 54kW is using almost the entire throughput of
a standard domestic gas supply and still manages less than 20lpm, and
that is at a 33 degree rather than the standard 35 degree temperature
rise. Specifications on some models are for only a 25 degree rise.
It would take the 70kW one and a commercial gas supply to achieve the
flow rate needed for a proper body jet shower.
You exaggerate somewhat. One outside model delivers 24 litres per
minute. The Triton Tower Shower takes a minimum of 8 litres per minute
at both the cold and hot inlets. The Rinnai can take up to 8 bar. The
Tower Showers will be at the maximum the mains can deliver up to 6 bar.
Tower showers are not thermostatic. This is where a Rinnai helps as it
accurately maintains the hot water temperature. The new 25mm plastic
main is delivering around 45 litres per minute at over 4 bar. The high
pressure is what people like in these showers. They have diverting
levers that switch from one set of jets to another keeping the flow
down. Fitting an unvented cylinder is way over the top in price and
consumes up lots of space and drops the pressure down to 3 bar or less.
The same with a thermal store, except the thermal store operates on
higher DHW pressures. I doubt if the floor could take the weight of
such a large cylinder, and I am using the old airing cupboard for a
shower anyway. The Rinnai will cope with two of them. I have checked it
all out, as you can see. The washing machine and dishwaters are cold
fill. I "may" fit a combi, which are cheap enough, to do the
kitchen sink, utility room and downstairs toilet taps. Then there will
be no taps robbing pressure from the Rinnai when full on.
Efficiency is quite poor. The 69kW input model has an output to
water of only 55.4kW - around 80%. This would not be allowed for a
normal boiler.
I queried this with Rinnai and they told me water heaters are exempt
from being condensing. The efficiency is about the same as boilers that
do not condense.
A Rinnai is
not an over the bath Ascot.
In effect, that's exactly what it is, except mounted outside.
That is the best part of it.
I
can't imagine why anybody would want a big white box on the outside of
their house. I would be surprised if their Japanese model is that
colour.
I have not looked at colours as I thought all were white.
Look at their web site.
I have, and I am very underwhelmed.
A nice, neat, slim
white box on the rear wall.
I think it's plug ugly.
A white box is a white box.
--
.andy
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