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conventional

A convention is a set of agreed, stipulated, or generally accepted standards, norms, social norms, or criteria, often taking the form of a custom.
In a social context, a convention may retain the character of an "unwritten law" of custom (for example, the manner in which people greet each other, such as by shaking each other's hands). Certain types of rules or customs may become law and sometimes they may be further codified to formalize or enforce the convention (for example, laws that define on which side of the road vehicles must be driven).
In physical sciences, numerical values (such as constants, quantities, or scales of measurement) are called conventional if they do not represent a measured property of nature, but originate in a convention, for example an average of many measurements, agreed between the scientists working with these values.

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  1. T

    How to fit pump to hot water basin tap on conventional system?

    Hi, My names Scott and I've just passed my level 2 plumbing and I've been given my first job on my own. On the job the customers hot water tap on the basin in the bathroom is coming out really slow and he's asked me to check it out to see if I can fix it but I've never really worked with pumps...
  2. L

    Combi or conventional?

    Hi guys, I have moved in to a new property and our old conventional boiler has failed completely. It is a large 3 bed flat on the second floor, about ~40m from the gas meter reading (on the ground floor) and water pressure in the kitchen is about 12 litres per minute. The first...
  3. P

    conventional system pump

    doing some tests on a faulty pump from a conventional system,, with a multimeter.....In the book ive got it says the range of ohms with a working pump in 120-200, and the reading im get with this pump are 340.0, 280.0 and 0.03 could any 1 tell me what these readings mean, thanks pipeline.
  4. A

    changing from conventional to combi

    i am changing from a conventional boiler to a condensing combi and have bought a 29kw vokera with a 15 mm gas inlet would this be ok to use with the 15mm instead of 22mm or could there be problems. i had a heating engineer in to give me a quote on fitting and said to get a boiler with a 15mm...
  5. P

    Pumped conventional gas boiler connected to gravity solid fuel boiler system??

    I am a gas safe registered engineer, I have been asked by customer to change oil boiler for gas boiler.The conventional oil boiler is floor mounted with pumped heating circulation pipes but gravity hot water coil connection. There is also a solid fuel wood burner which flow and return are...
    • pcplumbing
    • Thread
    • boiler central heating system connected conventional gas gas boiler gravity oil pump pumped return solid solid fuel system water
    • Replies: 18
    • Forum: Plumbing Jobs | The Job-board
  6. P

    3T advice - connecting conventional oil boiler feed and vent

    Hi new member here seeking basic advice on 3T connections. The current system uses a conventional vented oil boiler on the ground floor and is an old single pipe sytem with the boiler feed and vent from the expansion tank connected across the hot water cylinder heat exchanger on the 1st floor...
  7. A

    Problem with heaters on a conventional boiler system

    Hello new to the forum so hope all info is correct and relevant and not breaking any forum rules. i have a conventional boiler system (tank system). for a while now some of my heaters are constantly on. does anyone know the cause of this. also the water in small tank that holds the overflow for...
  8. T

    Conventional flue ventilation high/low level

    I have an upstairs flat, with a conventional flued boiler of about 14KW IIRC. Flue is taken into roofspace and then out through the roof.The boiler is in a cupboard on the landing, vented at high and lowlevel.Outside air was supplied through a vent at low level in an outside door directly off...
    • tiredguy
    • Thread
    • about boiler conventional efficiency engineer flue level ventilation
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
  9. E

    New ish 30 cdi conventional

    Any one want it or parts before it's scrapped? Boiler in good nick excluding but if surface rust from leaking Aav in burner box. Speak soon or it's gone. Working fine just getting a 'real boiler' 2. 30kw logics system boilers.
  10. B

    Gravity DHW with conventional oil boiler with 1 flow & 1 return top connections?

    For the last 30 years our house has been very successfully heated by a 70/90 Myson oil fired cased boiler in the kitchen. 1 flow + 1 return on one side for gravity DHW system and 1 flow + 1 return on the other side for pumped radiator circuit. My heating engineer advised that the boiler should...
    • bigjr
    • Thread
    • boiler connections conventional dhw flow gravity oil oil boiler pumped return system water
    • Replies: 17
    • Forum: Plumbing Jobs | The Job-board
  11. J

    Potterton Kingfisher Mf conventional boiler

    I post a genuine question and get two unhelpful replies - what is this forum for? Please note I have no intention of doing any repair work myself but I do want to be able to tell my GSR guy what the diagnosis is likely to be as I have found in the past he spends a lot of his time and my money...
  12. J

    Potterton Kingfisher Mf conventional boiler

    I have a Potterton Kingfisher Mf conventional boiler in my kitchen but it has started clicking on and off repeatedly and quite rapidly when it reaches a certain temperature. I changed the room thermostat for a new one but that does not make any difference. I then tried just the hot water system...
  13. A

    Replacement Home Boiler Required - Combi or Conventional (System)?

    Hi, Sorry for the long post, but I think detailed information will help you in providing maximum input! I live in a 3 bedroom end terraced house, which has a low pressure, gravity fed water system, whereby the water tanks are in the loft on the top floor, and the bathroom is on the same floor...
  14. G

    Combi boiler (26 kilowatts + booster pump) or conventional oil boiler? Please advise.

    Hi all, Moving to a house and I need to replace the existing oil boiler which is currently located in the house. House: 4 bedrooms detached (2 doubles & 2 singles). Not a big house though, around 120 sq m. 2 floors with guest toilet. en-suite and family bathroom. Options: 1- moving the...
    • galego
    • Thread
    • advise boiler booster combi combi boiler conventional oil oil boiler please pump
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  15. M

    Conventional replacement

    Hi lads Replaced an old potterton prima to Worcester 15ri today Took wiring straight in from old boiler to new everything runs as it should when calling for central heating however when just asking for hot water the boiler doesn't fire neither does pump run or anything like that, customer said...
  16. S

    Conventional boiler

    Hi guys I'm new to this forum,wanna pick your brains,what boiler do you peeps recommend ,I'm sure your gonna say either valiant,wb or veissmann but what model numbers out of those three would be the popular choice,any help would be appreciated
  17. S

    conventional boiler set help needed

    hopefully sometime this year ill be taking my open fed conventional boiler out and replacing it with a a combi boiler once im gas safe,but not 100% how the radiator set up works ,i know basically that the pipes running from the boiler go to the copper tank are flow and return .the flow...
  18. plumb_know

    System boiler

    was wondering if it is possible for someone to explain the difference between a system boiler and conventional, i have looked on internet but the explanations of both are the same? i would like to know the key differences and why you might install one type over the other?? sorry if question is a...
  19. D

    Worcseter CDi Conventional Boiler

    Hi Guys, I got called to look at the above boiler last week because the boiler would not stay ignited. The Flame kept fluctuating then eventually went to lockout. I phoned Worcester technical and tested evrything as they said but still couldnt find anything to fix it. In the end the...
  20. D

    Worcester 40 CDi Conventional

    Hi Guys, I got called to look at the above boiler last week because the boiler would not stay ignited. The Flame kept fluctuating then eventually went to lockout. I phoned Worcester technical and tested evrything as they said but still couldnt find anything to fix it. In the end the...
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