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query

Query languages, data query languages or database query languages (DQLs) are computer languages used to make queries in databases and information systems.
A well known example is the Structured Query Language (SQL).

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  1. U

    Danfoss tp900 query

    If anybody could help with my query I would be more than grateful! I have a Baxi solo boiler with a danfoss tp900 programmable thermostat which is located next to the boiler upstairs on the landing. In the hall downstairs is a ts2 room sensor, the only problem being that when we want to turn the...
  2. T

    New member query

    Hi, New member registered. No profile as a very bad diyer ! Found your forum with Google search. Original problem leaking Sharvin lever tap. Wanted newer tap fitted. Product bought Swirl tap reviver kit 1/2 lever. Problem I have is this: Fitted one lever handle,headgear, cold water tap...
  3. B

    Compression Joint Query

    Trying to add a bidet shower hose to my toilet. Am stuck at the joint as to what I would require to join the tee compression with the toilet tank. I have seen in you tube videos that the copper pipe slides in the tee compression hole but I got a piece of copper pipe and it just doesn't go in the...
  4. J

    Radiator dial query - anyone else's not work on lower setting?

    I have recently moved into a property and three of the existing radiator dials didn't work - they were not moveable and on constantly so I couldn't turn them off. I had a plumber come and drain the system to replace the three and now if I have the new dials on between 1-3 there is no heat only...
    • Jasper76
    • Thread
    • anyone between lower numbers query radiator setting temperature thermostatic work
    • Replies: 8
    • Forum: Plumbing Jobs | The Job-board
  5. L

    Draining loft tank to work on hot water system query

    I have an older conventional gravity fed vented domestic plumbing system and I need to work on the hot water circuit (replacing taps). If the water is drained from the loft storage tank (below the exit holes) or the water is otherwise cut off from entering the copper cylinder below, will this...
    • Lostloop
    • Thread
    • draining hot hot water hot water system loft query system tank water work
    • Replies: 7
    • Forum: Plumbing Jobs | The Job-board
  6. D

    combi boiler query

    Hi, Im just curious and wondered if anyone could enlighten me. I have a Worcester combi boiler, for the last 4 years I have had it set to heat the water TWICE a day for 2 hours, once in the morning and once at night.. A few days ago I was told that combi boilers automatically provide constant...
  7. S

    Ecodan query

    Air source heat pump, unvented cylinder with underfloor heating. When calling for hot water the flow pipe gets quite hot but when calling for heating thw temp drops considerably. Is this normal? Why would this be apart from the cylinder will need to be heated quicker?
  8. Riley

    Quick unvented query

    Had a customer ask about installing one today. Tested water pressure and flow standing 4 bar working 1.2bar lpm 12-13 I'm pretty new to unventeds on my own. Would I be right in saying that without a mains upgrade I'm gonna struggle to get much in the way of benefits ?? cheers
  9. H

    Vaillant ecoTEC plus 612 query

    Hello I have a new Vaillant system boiler which is very slow to respond to heating demand. When it starts in the morning and there is a high demand for heat it only fires up to about 1/3 power and stays there for about 30 minutes, or more, before going up to full power. I touch the return pipe...
  10. @

    Query about a valve in a central heating system bypass loop

    I havean open vented central heating system with an expansion tank in the loft. The system has two zone valves; one for the hot watercircuit (coil in a cylinder) and the other for the heating circuit (radiators). The radiators in the bedrooms have TRVs; allthe remaining radiators in the house...
  11. Riley

    Boiler sizing query

    Morning chaps doing a house renovation and customer lives abroad so is dealing with everything long distance. The property in question is a decent sized three bed semi with an almost completely open plan downstairs. Definitely needs a new new boiler as existing is a 15 year old ariston and is...
  12. A

    Replacing CH pump query also am i being too soft on customer?

    Hi guys, hope everyone had a good Christmas and new year. I managed to book the 'work' days off to spend with my family but managed to get a few private jobs squeezed in here and there so it turns out that I pretty much made the money for the time off with a few little jobs spread around. (Can...
  13. Riley

    Can someone clear this up for me G3 query...

    Had two guys arguing on site about whether a non G3 is allowed to install a pressurised heater of 15l or less. I was of the impression that yes they can. I do have a nagging in mind back to my old college days that they were talking about changing this rule, but perhaps this was never...
  14. D

    Viessmann 100-W Vitodens with weather comp and opentherm query?

    Hi all, As you probably can tell i don't come on here much but I've come across a couple of teething problems with my new system which i have only just installed. OK here is my set up: Viessmann 100 -W WB1C 19kw system boiler utilizing the 4 pipe system Viessmann unvented cylinder connected to...
    • danny848
    • Thread
    • 100-w controller opentherm query system viessmann vitodens water weather
    • Replies: 0
    • Forum: Plumbing Jobs | The Job-board
  15. M

    Flue query?

    Hi all At work today I've seen a flue come from a downstairs kitchen, through the ceiling and bedroom floor and then elbow outside. Is that even legal? I was there plumbing and it caught my eye seemed very strange and maybe against regs.
  16. N

    Mobile viper gas query

    Hello guys i wanted to do a gas course soon. Can i use this on my iphone? ViperGas: Mobile Gas Training Manuals or is it just manuals you can view online? Just wondered if you get a link to download an app on your iphone ect.
  17. B

    boiler pcb query

    Hi i got a call from a landlord who was charged £200 fir a new pcb in an old compact 24 boiler. He doesn't think the guy actually did change it so he asked me to taje a look and see if it was new or not, i did tell him it would be hard too say as there sealed inside a cover and dint really get...
  18. P

    Low loss header query

    HI all, I am working out the best way to install a Worcester 42 CDi into a 2 zone system. We currently have 2 pumps and 2 2port valves but the just on return back into boiler room. I will be putting in a LLH so the pumps don't intervene with the boiler pump - Is there anything wrong with just...
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