You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
maximum
In mathematical analysis, the maxima and minima (the respective plurals of maximum and minimum) of a function, known collectively as extrema (the plural of extremum), are the largest and smallest value of the function, either within a given range (the local or relative extrema), or on the entire domain (the global or absolute extrema). Pierre de Fermat was one of the first mathematicians to propose a general technique, adequality, for finding the maxima and minima of functions.
As defined in set theory, the maximum and minimum of a set are the greatest and least elements in the set, respectively. Unbounded infinite sets, such as the set of real numbers, have no minimum or maximum.
Just wondering if anyone with experience of Megaflo systems could give any advice.
Have a Megaflo system, indirectly heated via the boiler. Have Megaflo tank temperature set at the lowest recommended temperature which is 60 degrees (lower is possible but legionella risk rises).
The question is...
Hi everyone, we have a 1920s house with solid brick walls. The small front carpeted lounge (1.9 combined tog of underlay/carpet) with its own UFH circuit is struggling to get to 20 degrees. The UFH pipes run under about 5m of LVT to get to the front lounge.
My question is, can I boost the...
I have 23 year old potterton suprima 60 with a danfoss flowshare 2 diverting valve and new programmer. I am experiencing short boiler operation of a minute or so before shutting down and then starting up again ( hunting?) Boiler thermostat maximum also room stat maximum but rads only getting...
Hi,
I am getting a lockout due to “maximum number of ignition attempts”. When I power the unit off and on it seems to work fine but eventually later in the day the lockout occurs. One time I did watch it try to ignite and the igniter turned bright red but no ignition and then lockout code...
I have a kitchen mixer tap with one simple lever controlling temperature and flow. The street water was cut off for a few hours. After that, the hot water flow worked as before, but the cold water flow was very weak. With the tap set to cold, if I open the tap about half way, the flow is the...
Hello everyone I'm new to the forum, I'm looking for some advice and piece of mind.
I want to plumb a hot water tap to my kitchen (combi system). Unfortunately I've had the kitchen plastered and I've now decided i want to move the position of the sink, without seriously damaging the nice new...
Hi guys,
My house is a new build and cannot believe that the plumbing was done by plumbers at all, it is a disaster. Have slowly been correcting bits over the last couple of years. The vent pipe was crooked over the tank about 10cm above the water level line. I seem to remember 450mm being...
In a pumped radiator circuit, in long horizontal-ish stretches of pipework (say 15mm dia), what's the maximum typical rise/fall before air pockets become persistent (aren't moved on by pumped flow) and cause noise/gurgling, and before air locks prevent flow?
Apologies if this is a common query...
normally range rated boilers have a min,medium and max settings, so if I'm testing the heat kW input and burner pressure does the results have to be spot on one of these settings or does it just have to be within in the range of the min and max? Or do I have to do the test on maximum which would...
Cjw.1
Thread
boiler
boilers
happy
maximum
oil
posts
range
rated
settings
I just had a visit from Building Control. The BCO said that I had too many appliances going into a 40 mm waste pipe. I have looked up Part H of the Building Regs, but I do not see any specification of how many branches you can have on a 40 mm pipe. The BCO said I had to connect them all into a...
I've had a new Vaillant Ecotech Pro 28 fitted in a holiday let this week to replace a Ferrolli F30. All seemed wonderful - very quiet as I hoped. It's controlled by a Hive and after he installed it I set the temperature up high on the stat. The 'Hive' recorded temperature rose as expected but...
Searcher2
Thread
about
boiler
issue
maximum
new boiler
oil
outside
temperature
Specing some light commercial ,how many toilets sinks can you normally get off a 22mm cold main,cannot download anything with PDF,as pc is buggering up,when would you upgrade to a 28 mm main. The building is a small club,with instantenious under sink heaters,no big unvented,or baths.
sheff paul
Thread
22mm
appliances
cold
first
incoming
maximum
might
number
pressure
showers
I have a toilet which is filled via a 3 bar pump. It fills up very quickly. It is a couple of years old now and was working fine until recently. There was a slight leak that appeared where the flexible hose connected to the bottom of the plastic thread so I tightened it up a by half a turn and...
Im quoting for a new boiler but noticed the tank outlet is about 4 metres above the pump. I cant find in my books anything to prescribe when to use a pressure reducer. Anyone have any guidance? Doesnt appear to be in the MI.
Thanks
Bunker
Thread
above
head
level
maximum
metres
oil
oil tank
reducer
tank
Morning all, hoping someone can help. Moved into house about 2 years with the above shower installed - shower has worked beautifully since then until daughter recently visited and decided to turn up to maximum:confused5:. Now shower won't turn on - gives one short burst of water then nothing...
Trish
Thread
cold
heating
hot
maximum
not working
power
power shower
shower
thermostat
thermostatic
working
Just looking at the Part H building reg’s and table 2 - page 9 says that up to 8no W/C’s can be fitted to a horizontal branch from a soil stack and a max run of 15m, but diagram 3 – page 9 says that the maximum run for a single W/C branch is a maximum of 6m.
Is this is due to the perceived...
Hi guys,
Can anyone tell me if there is a maximum cold water supply pressure for domestic and / or commercial premises please?
We have an electric water heater below our works kitchen sink which is protected by a 6 Bar PRV.
Having worked for years suddenly the PRV began 'venting to waste' so I...
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.