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hot water

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  1. N

    Tap for a gravity based hot water system

    Hi, I have a gravity based hot water system, and recently had a new kitchen installed. We never had a noticeable hot water pressure issue before, but the flow from the new tap is down to a trickle. Pressure head is c.3m. Flow is 2L/min compared to 12L/min minute out of the hot water tap...
    • Niall_Glasgow
    • Thread
    • gravity hot water system water
    • Replies: 3
    • Forum: UK Plumbers Forums
  2. H

    Requirement Circulation pump for the hot water secondary Return

    Silly question (and might already been asked 100rds of time) - I am specifying a circulation pump for the hot water secondary (circulation) return to reduce the wait for hot water. HW is coming from unvented cylinder with a secondary return connection. The secondary return is almost straight...
  3. N

    Is this changed domestic hot water system design going to work ok?

    Hi, We are having PV panels fitted which will dump the excess energy into our hot water tank. Our house originally had a large 210L economy7 hot water tank (cold tank in loft), but the hot water tank died 18 years ago. At that time we fitted a smaller 117litre tank and went for fitting electric...
  4. M

    Rayburn plumed into vented hot water tank

    Hi, I have a rayburn 212 that I have plumbed into a vented hot water tank as far as I am aware I do not have to vent the rayburn as the tank is vented, is this correct. attached Is an image of the tank and a very basic schematic, fig 1 is how I have it plumed fig 2 is how I would plumb if the...
  5. M

    Hot water to multiple commercial kitchens

    Hi all, Hope all are well. I’m in the early stages of renovating an industrial unit. The fit out is to have 7/8 commercial kitchens, these kitchens will have reasonable output, i.e. high street takeaway in terms of their demand. The unit has 3 bar of pressure and 25 litres a minute of water...
  6. J

    Hot water leaking at overflow

    Hi Overflow suddenly spouting out luke warm water to outside of house, checked on down pipe in photo leads exterior overflow, could put finger spout when overflowing and its luke warm water. Why is it overflowing? Lot of water coming out. Photo attached of side of tank to show above. What is...
  7. L

    Hot water only works when central heating turned on too. Why?

    Hey everyone, I'll keep it short. Had our old system boiler replaced with a new Ideal system boiler set up. Then the problems began. First issue was the pump went faulty, so the pump was replaced. This then led to a new issue coming up where the central heating would work, but not the hot...
    • Leo Ismail
    • Thread
    • central central heating heating hot water water
    • Replies: 2
    • Forum: Central Heating Forum
  8. B

    Not hot water in two outlets

    Hi Guys Need to pick your brains if you have a moment. I attended a flat where in one bathroom the hot water on the basin had major low pressure. In the Ensuite shower it was the same issue in the hot water. All the other hot water outlets in the property had good pressure. Bath and kitchen...
  9. H

    Hot water cylinder only heating top half of tank

    Hiya, we had a new pressurised hot water cylinder fitted a few weeks ago even though its double the size of our last one we are finding we aren't getting any more hot water. So once the tank is full and the immersion has turned off and i touch the tank only the top half feels warm and the bottom...
  10. G

    studio flat heating and hot water

    asked to specify for very small studio flat, architect has drawn a combi boiler, 2 radiators, heated towel rail and shower, basin, kitchen sink, washing machine. seems overkill to me, in the past i have used electric shower, 15l 3kw Ariston for hot water, and electric panel heaters, but he is...
  11. K

    New mono mixer tap fitted, hot water flow is slow!

    I have just replaced the old bathroom basin mono mixer taps, 2 tap heads, standard compression valve type, to a modern mono mixer single lever type. For some reason the hot water running on the new single lever mono mixer tap is slow flowing compared to the old ones. The cold water running...
  12. chloeradhsaw

    Baffled By Cylinder Hot Water Draw Whilst Cold Water On

    I had my indirect hot water cylinder removed a few days ago and the central heating boiler and pump is turned off at the fuse spur right next to the boiler. I have been without hot water for a few days which is fine - The plumber left the flow / return to the cylinder uncapped as well as the...
  13. W

    Firebird oil boiler hot water

    My firebird oil boiler hw supply is luke warm, but does heat up slightly when run if the ch is on at the same time. Is this a faulty diverter valve? If so could I replace this myself as I've heard they're expensive to fix. Tia
    • Westernr1
    • Thread
    • boiler hot water oil boiler water
    • Replies: 27
    • Forum: Boilers
  14. S

    How to shut off hot water and heating on this kind of boiler and tank?

    How to shut off hot water and heating on this kind of boiler and tank?
    • Slippery
    • Thread
    • boiler heating hot water tank water
    • Replies: 1
    • Forum: Boilers
  15. T

    Loft conversion hot water problem

    Hi. I’m having a loft conversion done in the Uk. My builder has made the connection for the hot water to the loft but since he has done this my hot water in the rest of the house is not getting hot. I have a combination boiler and the water gets to say 37 degrees ish but not hot hot for washing...
  16. W

    Combi boiler - bang when hot water opened

    Hi All! I hope you can give me some advise. I had combi boiler (Viessman vitodens 100-w 30kW) installed about half year ago. Recently I start hearing one single bang when hot water is opened at any of taps around house. It sound like someone in other room will knock a radiator (not relly loud...
    • woytaz
    • Thread
    • boiler combi combi boiler hot water water
    • Replies: 41
    • Forum: Boilers
  17. S

    Hot water, low-pressure

    Hi today, I installed a new kitchen tap, isolated the stopcock I’m drained down the hot water when turn the stopcock back on the pressure outside the kitchen tap was weaker. Strangely, the bathroom tap has good pressure this is for the hot both colds a good pressure Any advice please?
  18. R

    Hot water turns on radiators

    When the hot water is set to on, the radiators also warm up. Two 2-port valve / cylinder/gas boiler system. Seemed possible likely that the valve to the heating was sticking open (partially?). This valve was replaced the problem remains. What could be other possible causes? When the heating...
    • R_Manchester
    • Thread
    • hot water radiators water
    • Replies: 3
    • Forum: UK Plumbers Forums
  19. J

    Bathroom hot water sink tap. Low flow

    Hi, Just had a new bathroom fitted and have a pathetic flow of hot water from the sink tap. It wasn't great before. I can't get hold of a plumber, but any ideas as to what this might be? I also noticed that the pipes that feed the hot tap go into the loft? I know nothing about plumbing, but is...
  20. D

    5 min of hot water in shower after cartridge change

    Our master bath shower had two shower heads. One was leaking/dripping so our plumber changed both cartridges since he was already there. That fixed the leak, but ever since one side gets too hot and the other side only stays hot for 5 minutes before slowly getting colder and colder. Our plumber...
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