Straw Poll "Are you satisfied with hot water from a combi boiler"

[Dave Plowman (News)]

Don't ever worry about me. I've been insulted by experts. ;-)

[Dave Plowman (News)]

The sock puppet returns...

[Dave Fawthrop]

| In article , | Doctor Drivel wrote: | > As many of the idiots on this thread spurted forth, combis are full of | > silly old wives tales, which are untrue, pasing off old crap models as | > the norm. Want two baths to be filled simultaneously? One can do it. | > Just choose the model. | | Some of us are used to 25 litres plus per minute of piping hot water to | fill our baths regardless of external conditions.

Maybe I have seen that a few times in hotels, never at home. I find 8l/m, measured, perfectly satisfactory. Fills a bath in about 7 mins, as would the proposed combi. I have set my conventional system to simulate the proposed combi and there is little difference between what I have now and the proposed combi. I have no idea where people get 15 mins for a bath from, maybe it is an Urban Legend.

[Lurch]

On Tue, 13 Sep 2005 20:03:03 +0100, "Dave Plowman (News)" scrawled:

Not as sad as the fact that his plane didn't crash.

[Andy Hall]

56 litres? That would bearly be enough to paddle in.

Not really - just simple arithmetic for what is required for a standard sized bath as opposed to a bidet.

[David]

In article , Dave Fawthrop writes

What do you do, just wash your feet? or are you talking about a baby bath? 56 litres is about half of a small bath so its easy to see where

15 mins comes from, its the time a 8l/m combi takes to fill up a small bath of 100l. My bath takes 180l, I'll leave that calculation to you

[Dave Fawthrop]

| In article , Dave Fawthrop | writes | >On Tue, 13 Sep 2005 20:08:33 +0100, "Dave Plowman (News)" | > wrote: | >

| >| In article , | >| Doctor Drivel wrote: | >| > As many of the idiots on this thread spurted forth, combis are full of | >| > silly old wives tales, which are untrue, pasing off old crap models as | >| > the norm. Want two baths to be filled simultaneously? One can do it. | >| > Just choose the model. | >| | >| Some of us are used to 25 litres plus per minute of piping hot water to | >| fill our baths regardless of external conditions. | >

| >Maybe I have seen that a few times in hotels, never at home. I find 8l/m, | >measured, perfectly satisfactory. Fills a bath in about 7 mins, as would | >the proposed combi. I have set my conventional system to simulate the | >proposed combi and there is little difference between what I have now and | >the proposed combi. I have no idea where people get 15 mins for a bath | >from, maybe it is an Urban Legend. | | What do you do, just wash your feet? or are you talking about a baby | bath? 56 litres is about half of a small bath so its easy to see where | 15 mins comes from, its the time a 8l/m combi takes to fill up a small | bath of 100l. My bath takes 180l, I'll leave that calculation to you

I am describing experiments done with a 10 litre bucket, a stop watch and a digital thermometer. I then used the full bath and found it satisfactory.

[timegoesby]

The leader of the moron pack is at it again. I have literally given put reading most of what they write as it is totally predicable and not much value at all.

[timegoesby]

The leader of the moron pack is at it again. I have literally given put reading most of what they write as it is totally predicable and not much value at all.

[timegoesby]

The leader of the moron pack is still at it. Most of this thread is infested with them.

[David]

In article , Dave Fawthrop writes

So how big is your bath then? and would you say you like a hot/warm/medium bath? would you say you a standard human being?

[PeTe33]

Abundantly. we have 14 l/min at 30 degree temp rise so running at 55 degrees HW temp gives more than ample supply for shower, and as we rarely use baths anyway, it's still well ample for a bath fill when 'er self want's a soak.

I used to have a HW tank heated from a backboiler with a "real" powershower pump feeding a mixer shower. The HW tank would empty in about 7 minutes and the shower would then run tepid.

So, a combi is the dogs bollarks. I would never go back to stored HW.

[Dave Plowman (News)]

But at least it's English...

And posted only once...

[Dave Plowman (News)]

You are of course entitled to your opinion. But most who like a decent bath would disagree with you. I like a bath to fill in the time it takes to get undressed etc.

[Peter]

Out of curiosity could you take a guess at how many kW of combi boiler power would be required to fill a bath at the same rate as a stored hot water system?

[Dave Plowman (News)]

It would depend on the stored system, as some can be very poor.

[Ed Sirett]

It depends on how effective your 'stored' arragements are but if you took a typical 20 litre/min of mixed water (a correctly installed unvented system might well give twice that). The you'd be looking at around 50kW more or less depending on the inlet water temp.

[Dave Fawthrop]

| You are of course entitled to your opinion. But most who like a decent | bath would disagree with you. I like a bath to fill in the time it takes | to get undressed etc.

Well I have no problem getting undressed in 30 sec, so with your 100l bath, you must have 200l/min. I very much doubt it.

[Dave Plowman (News)]

Fine. I'll give you some figures. I get near 30 l/min of hot at 60C and the same flow rate of 'cold' at probably around 10C since it comes from a storage tank too. So it fills the bath in *about* the same time as it takes to get undressed and get organised for a bath. If I'm in a rush to get washed, I use the shower. Which also delivers the same sort of flow - being an Aqualisa fed from 22mm.

If you'd care to recommend a combi which can match this I'll buy it tomorrow. Unless, of course, it needs a commercial gas supply, etc.

[Peter]

Thanks Ed. That's quite some power for sure. I was concerned about that. So I would be needing a very big gas combi or a three-phase supply to drive some fancy, semi-industrial, Stiebel-Eltron kind of electric device.