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system

A system is a group of interacting or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and expressed in its functioning. Systems are the subjects of study of systems theory and other systems sciences.

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  1. plumb_know

    Decommissioning cylinder coil on wet solar system

    Hello Everyone, I have customer with solar that doesn't seem to be working so only gets 1/2 a tank of hot water which is heated by the central heating system. She can't find a company to come out and service the wet solar system and she is looking at getting loft conversion in the future will...
  2. D

    Do I have an air lock in my system?

    Hi, I have had this problem for a week now. The oil boiler will run for a short while and then stop. If I check the pipes around the 3 way valve they are all hot and the pump is running but all the radiators are cold. I have a bleed valve next to the water tank and I bleed that frequently and...
  3. M

    Open vented system - Boiler turns on and then loses heating pressure?

    Hi guys, We have an open vented heating system and a Worcester Bosch greenstar boiler. Recently there is little to no heat getting to all radiatiors. It seems that when we turn on the nest heating the boiler starts whirring as expected as then dies down quite fast. I cleaned the magna filter...
  4. Z

    UFH pump robbing from Rad system

    Hi We have an UFH system part of the house (large kitchen / dinnner and utility room) and then Rad system for rest of house (10 rads). We have noticed in this recent cold weather when both UFH and Rad are on (ie thermostatic driven) the UFH is robbing all the hot water and not getting round...
  5. A

    Problem pressurising system

    Hi there, I am having issues pressurising my boiler/system. my boiler was below pressure but I had to replace the external filling loop valve (tap had broken on the old one) I did this, and there are no leaks around it. However, every time I pressurise the system back up to 2 bars it drops down...
  6. M

    Urgent advice - Replacing gravity water system

    We need an urgent advice, we have a gravity water system and we are in a middle of loft conversion. We are adding an en-suit in loft and prefer to have a good water pressure there. What we want, is to either be able to run multiple showers at once, or if one person is having a shower, other...
  7. E

    Baxi System Boiler Weather Compensation

    I'm wanting to install weather comp on my Baxi Platinum+ system boiler (GC No: 41-470-95). This is because the house is heated using underfloor heating which is mixing down to 35c but the boiler is set to 70c to heat the unvented cylinder up to 60-65c. The idea is to select a curve more suited...
  8. T

    Advice on low-profile UFH system in ex-council flat.

    Hello all. First time posting so apologies if this is answered elsewhere. I am close to completing a purchase of my first flat, an ex-council place from the 1960s built in the usual concrete slab and brick. At present there is some ghastly pipe work for the radiators sprawling round every...
  9. P

    How to raise pressure in my samsung 6 gen joule heating system

    Hi Guys, my pressure gauge showing nearly (if not) 0 Bar. Heating downstairs works for now, upstairs 2 out of 5 rads not. I'm trying to get a plumber in but it will take few days, have kids home and afraid to end up with no heat. I believe all what it needs is get pressure back to 1 bar but...
  10. D

    Campervan water system

    I'm plumbing my campervan and made the following schematic to show the different modes it can operate. Although I'm an experienced DIYer, I've never tackled a plumbing job this complicated and I'd appreciate any advice. Normal operation using Tank 1 – B, F open Normal operation using Tank 2 –...
  11. A

    Understanding gas central heating system

    Hello everyone, We have recently moved to the UK, so really don't know much about gas central heating and boilers over here etc. So this is probably a very basic question but I just don't know! We are moving to a house later this month. It has a "wall-mounted gas-fired boiler for domestic hot...
  12. Dale_R

    Recent house purchase - CH/HW Major issues.

    Hi all, We recently purchased a house and nothing seems to work correctly here, I've spent weeks rectifying issues. Plumbing, electrical, carpentry it's been never ending. The house was built by Barratt Homes in the year 2000, it is a 3 bedroom house called a Palmerston, the CH/HW system is a Y...
  13. D

    What is wrong with my system

    Hi Sorry I can't find my original first post which stated the problem I had with a plumber. To update you all he finally admitted fault and came out last week to rectify the pipe work problem. Im now left with another issue.. Sigh! He's probably messed up my motorised valve that feeds the...
  14. Fatboyslick

    Repeated air/hydrogen forming in closed heating system?

    Would love some advice please: I had 4 radiators replaced in September as part of a kitchen refit. This included new copper piperwork behind the walls where the Rads are placed. The system wasn’t flushed or anything, just installed and the plumber left. A few weeks later we noticed that our...
  15. jklondon

    Strong vibration foghorn sounds in system

    When we turn on the water first thing in the morning of after a while of non use there is vibration sound that can be heard to different degrees across the house. Its not instant but normally after a minute when the water has been turned off. It doesn't seem to be isolated to a particular...
  16. R

    Undersized System Boiler???

    So I posted a while back regarding my 300ltr unvented cylinder not seeming to keep any volume of water hot for very long. Could it be the system boiler is not powerful enough? I have approx 220m2 of underfloor heating and the hot water cylinder’s . Does anyone know if Worcester Bosch Greenstar...
  17. C

    Is a leak sealer ever a suitable solution for a new system?

    I assume the answer is no, but if this fixes the issue I know it will be what my builders sub contractor plumber will do. Therefore, before he is allowed near the system I would like to either find the issue or eleimnate parts of the system that do nto have an issue. As you will note from my...
  18. G

    Ideal Logic+ System cycling when no HW or C/H demand

    Hi. I have an issue with my Ideal Logic+ System S24 boiler which I hope someone can help with. Below is as much detail as I can think of. The boiler has been running constantly (cycling?) 24/7 for the last few days, during the recent very cold snap and since. HW and C/H are running fine, as per...
  19. J

    System pumping over into F&E

    I'm trying to make sense of a system I've came across. One part that's caught my attention is the position of the pump. The system is pumping over when the stove is lit. As you can see the pump is directed toward a tee heading towards a 28mm elbow which I believe is the stoves return. The...
  20. T

    Drain Central Heating System- when is it safe to switch Boiler back on

    Drain central heating system (water tank in loft) in a two storey house - ground and first floor when is it safe to switch the boiler back on - is it only when the tank in the loft has stopped making a noise - implying that the system is back to where it was before the system was drained. The...
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