Agreed, but imagine what happens when 4 people are competing to use the bathroom facilities and it takes nearly 15 minutes to fill a bath.
Check that one carefully.
I am happy to have an email conversation with anybody and frequently do. However this does require an email address to use.
.andy
To email, substitute .nospam with .gl
This doesn't even help with the bath filling problem, unless you've got a hose from one bathroom to the other. Even if both were connected together to combine their flows, the flow rate is still half that of a heat bank.
Also, many people with gas boilers also choose to have cooked dinners. I hope you've left 15kW for the Sunday roast.
Christian.
Another mentalist enter the fray.
Andy is nauseous. You are right.
Two of them? Nonsense!!!!
British gas did.
A did use one but mentalists kept sending stuff there.
Can you produce an official document from them or Transco to the effect that they approve overloading of their services and measuring equipment as you describe?
.andy
To email, substitute .nospam with .gl
It wasn't overloading. A 212 cu/ft hr meter was good for x 2 as standard. The was 100, 200, 250 and 400 cu/ft hr meters. They were all done away with for one U6 212 cu ft/hr. A 350 cu foot/hr installation would have a 212 U6 fitted with 1" inlet and outlet.
So answer the question. Where is the official documentation from Transco or BG approving this as acceptable practice.? Can you provide the name and phone number of somebody in either organisation willing to confirm this in writing? What about the supply pipe from the street main?
.andy
To email, substitute .nospam with .gl
Contact them. Transco may have reduced the flow through a U6 being a private cheapskate company who don't want to upgrade the system. When it was the gas boards they had a duty to supply a minimum amount of gas. If the lines were too small they had to increase them.
Do your own resesarch, lazy sod! I have given you the pointer so go ahead.
If not good enough they had to upgrade it, a law in 1965, when it was determined the UK would go ng, set the tone for what they were to guarantee to supply. With town gas the line pressure was 4" wg, compounded that the cv went from 500 to 1000 and ng pressure went up to 8" wg, you could half the pipe sizes. So, as the old mains were geared for a low pressure and cv, this meant the mains pipes did not have to be upgraded as people went from gas boilers by the million. Boilers running on town gas tafter conversion had pipes twice the size. Virtually all boilers had 1" pipes up to the boiler. This also meant many meters could be done away with and replaced with a few.
If I need to install two W-B Greenstar 40 kW combi's, that is 80kW and about
300 cu foot per hour, I would ensure the meter inlet and outlet was 1" and leave it. The meter and gas lines should cope. So, for 2K you can have 32 litres/min instantly and never run out of water. Not bad at all.
Not bad at all!
Sounds good. Do you take water directly off the store or via a heat exchanger?
I would have thought a heat exchanger would need the store temperature to be higher.
cheers, Pete.
Right, so a pipework size increase is necessary.
Certainly not.
You made the assertion, so you justify it.
So answer the question. If I were to contact my gas supplier today and tell them that I have a standard supply and meter, but I want
80kW, what would they tell me?Would it be that it's OK to go ahead or that a larger service pipe and meter is needed? I am sure that I know who would have to pay for any upgrades.
Would this be an approved installation on a standard service and meter?
.andy
To email, substitute .nospam with .gl
The water is used directly.
A heat bank would be an advantage in principle because it could be maintained at 80 degrees rather than 60. To heat the DHW, a stainless steel brazed plate heat exchanger would be used to do the heat transfer to the cold water. These are excellent devices and able to transfer 100-200kW in a unit not much bigger than a house brick. I have one in use for running a separate heating circuit to my workshop.
The problem that I have is that the mains water flow is not that good
- about 15lpm - so the performance would not be good. Ergo, the better solution is a large roof tank and cylinder.
It doesn't need it, but it makes sense because you can store more energy.
.andy
To email, substitute .nospam with .gl
Nope.
Well why ask?
You want the info you get it and I gave the pointer.
Ring them and see.
I doubt the 1" service pipe would need replacing. They may replace the meter for some bizarre reason with them being very amateurish.
It was. Cheapo Transco may have moved the goalposts.
That's why nobody understands DIMMS replies, he keeps answering the previous question
In message , IMM writes
Against ?
Maxie, does Dim Lin the far eastern luscious lovely answer back to you?
This has no relevance to whether or not the supplier will underwrite the use of the supply beyond the specified operational value.
So how does this square with the requirement to burn gas at between
90% and 105% of the specified rate?If the regulator on the appliance falls out of operation because the pressure has dropped too low, this is not a desirable situation to say the least.
It also, of course, defeats the object of having two 40kW boilers, if there ever was one in the first place which is dubious anyway.
So it comes back to the main question. Is a domestic gas supply going to be able to deliver 80kW (realistically 90kW+ to allow for other appliances) and still be within the supplier's guaranteed spec.?
.andy
To email, substitute .nospam with .gl
Indeed it does...
Wandering off topic for a moment, plenty of people correctly point out that this will not save the life of one fox since they will have to be population controlled by other means, and a good few also realise that it will end the lives of a good few thousand horses and dogs (result for "animal lovers" that one!). However what I have not heard anyone voice as yet is the number of human fatalities that will result each year. Something people seem to ignore is that 70% of the time spent by the various hunts is on countryside management activities which include things like collecting and making safe the big items of road kill. It will now presumably fall to councils, with all their legendary efficiency, to scoop up the dead sheep/deer/other critters before some other poor sod drives into them!
A 1" main pipe can cope. It used to cope and I assume it stil does as the pressures are still the same.
Two 40K combi's give continuous hot water and NEVER runs out. A large family would benefit from this. Also no tanks or cylinders taking up space. Two Greenstars takes little space on a wall. They could be at the back of the airing cupboard.
The cowboys Transco will tell you.
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