Simple test fot the OP to try.
Time how long it takes to fill you bath from the cold tap alone with it full on. If it is longer than three minutes then no amount of combi power alone will do what you want. If the cold main is not up to the job you will either need to upgrade it and/or accumulate water somewhere in order to get the flow rate you desire.
Read the other posts on this thread.
The bath tap may not take all the mains flow.
Precisely.
I think it's a bit like saying that you can get 16A from a 13A plug. Which no doubt you can (since the fuse will likely not blow for hours if at all). However on a hot day with a 99p 4-way extension lead feeding a cheap plug that _claims_ to be BS 1363 and CE approved (but is made and bought on cost for the sheds by Fook Yu of China) you can expect trouble.
You should ask IMM for his mug (sorry customer) list. These people have two combis so you could clean up.
Ah a maitenance man! I can't see how you do as you don't understand the benefits. There again changing fans and the likes doesn't take that much knowledge of systems.
You poor sod.
Don't understand the benefits eh?
Still don't understand the benefits eh?
Just as well you don't design sytems for them, you wouldn't know were the hell to fit one.
Boy the maintenance man doesn't know does he. You can fit a small rad at the back to do the same job and store more clothes.
You must only repair the crappy ones. BTW, many people will say the exact opposite to you who repair them on a daily basis.
If you want low presure showers (or have a a ridiculous noisy, expensive power shower pump) and can't use most of your airing cupbiard then fine. Is Fred Dibnah your hero? (bless him)
In case you didn't know. Most of the world laugh at our water sytems with cylinders and tanks in the loft. They think we are mad. BTW, only the UK and Ireland have the tank/cylinder setup.
For your info, as you should know, the difference between a system boiler and a combi is negilible these days in complexity.
Read my posts on using two combi's and the combi explainations, I'm you didn't know. If you know anything about system design you will conclude it is the cheapest approach to acheive zoning, full main pressure and no airing cuboards that look like a school boiler house. Do you hang your underwear off the CH pump? Many do.
Balls!!! I used to design gas systems in the 70s. U6 meters have an 100% overload. We would take them up to 350 cu foot an hour. Go to your meter. Take off the outlet pipe and fit a 1" hose to outside, then turn on the maintap. Time the dial for 30 secs or a minute. See how much gas it then passes for an hour. I bet it is more than 212 cu foot an hour.
Perhaps you could let us know where so that Transco can be called to correct the errors.
With full accuracy and full lifetime?
Nearly double the specified rating? Was this official gas board policy?
That it may, but it does not mean that it is correct engineering practice.
They could run at 100% over for a very long time. I forget the figures now.
Yep.
It was in the 1970s. Now private rip off artists like Transco make you pay when there is no need to.
If I recall rightly. There was:
They were all replaced with only two meters:
We fitted U6s for less than 350 cu foot/hr and U16 for above. The U16, if I recall rightly, we fitted for up to 800 cu ft/hr.
If a premises required less than 100 cu ft/hr. we left in the old 3/4" iron mains pipe. If above 1" was used. A U16 meter required a 1 1/4" mains pipe. The exception were there was a very pressure gas main. Some roads had very pressure trunk mains that fed a district, and was governed down normal pressure. If a hosue was on this mains pipe special high pressure meter regulators, with a blow-off to outside, were installed and a U16 may have been OK with a 1" mains pipe.
All from memory, so may not be 100% right.
That's why they brought in the CORGI registration, then?
I imagine that you did then as well by the look of it.
No wonder they were shut down.
It seems that they are delivering and using equipment within specification. Ownership has no relevance to that.
You did say the *19* 70s when you were doing these design bodges?
I just wonder how much of this bodged up infrastructure is still in place. It seems that one of the less palatable sides of a public monopoly organisation is to make up its own rules as it goes along with the customer having no knowledge or choice in the potential danger or billing error that may have been introduced.
I would much rather have a choice of organisations implementing a defined specification.....
You wouldn't know a bodged up job if you fell on one. Why do you persist in making a part of yourself?
Stop babbling crap!
Yep that is what they did, as stated above.
So please explain why it's OK for a public monopoly organisation to exceed the manufacturers specifications on products that it uses - if indeed it did on a widespread basis, but that it's not when its replacement organisations does installations within those specifications.
Did you get fired for incompetence?
If the manufacturers intended their meters to run as a design goal at
50% over stated capacity, they would rate them that way. Alternatively, they would manufacture them down to the stated spec. with much less headroom and more cheaply.If there is overdesign on the part of the manufacturers it is for reasons of a safety or accuracy purpose.
It doesn't seem very plausible that they will have sat down one day and thought "Now there's that bodger, IMM, at the gas board and we know he's going to use the meter at 50% more than the spec allows, so we'd better overdesign it and not tell him"
More likely they will have thought "We'd better put a warning note with pictures in every box warning him not to use a hacksaw to install it".
Are you trying to do a hacksaw job on Andy?
The makers stated overload was fine. When privatisation comes along, there is none and the punter pays through the nose. As time went on and houses became insulated and boilers more efficient using less gas, overload was far less of a problem.
They wanted to keep me on and gave shining references.
How do you know?
If I recall, the meters were not recommended to operate at 100% overload at
100% of the time. A domestic boiler is intermittent in operation, and modern boilers modulate down, meaning meter overload is even more feasible these days. < snip babble from a man who doesn't know >
At times he does required ad-hoc surgery.
eye eye
Jim A
Really? In writing?
I see. Here comes the fudge.
I guess something along the lines of:
"IMM worked for us for 20 years, during which time he was seldom late".
The subtle change of tune.
Accompanied by more fudge.
It's getting very sweet and sticky here.....
We had it in writing from the gas boards. Tables etc.
No. They could operate at 100% overload, but 100% of the time. Very clear. One would not be fitted to a commercial installation that ran at 100% over
24/7. For domestic it was fine. Got it? Read again if you haven't.As you are hard of thinking, these days overload would be minimal compared to 25 years ago. But the private sharks will still not accomodate it.
Have done and it's still rubbish.
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