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pipework

  1. M

    ASHP not compatible with existing CH (cast iron) pipework?

    Hello, We were due to have an air source heat pump installed on a grant scheme on Monday, with radiator size upgrade, but retrofitting using the existing pipework. The calculations have been done to show it's viable etc... However their engineer has just (!!) looked at the photos taken by the...
  2. Bogart

    YouTube Video of pipework and pump

    Saw this last night and wondered about a couple of points. 1 You see the state of the pipework at 7m30s and at 7m54s he says he will recommend the customer gets the system flushed. I am thinking that the pipework shown is not like it throughout or surely no amount of flushing will help that...
  3. G

    ASHP radiator pipework requirements?

    I am having an ASHP, radiators and pipework installed to replace storage heaters. How can I check whether the proposed pipework and pump can cope with the heat demand? The installer is proposing a single circuit with 14 radiators with a combined heat demand of around 8kW. I hear heat pumps...
  4. P

    Removing two isolation valves in awkward spot (on heating pipework)

    Hi folks There's a couple of isolation valves on our radiator pipework (vented system). One started to weep a while back, but luckily stopped after a bit of tweaking. I've since learned they shouldn't be there, and so with some plumbing work coming up which will require a drain down, I'm...
  5. Stants

    Pipework type / design for Unvented Cylinder ( 170 L Megaflo Eco )

    Hi I'm tying / hoping to run a drain for an Unvented indirect cylinder I need to run it now as I want to close in the building ( its in a loft conversion ) I'm having great difficulty getting someone to fit the whole system for me , it was being done by a guy but now he can not do it as...
  6. A

    Potential Air locks in TP210B cylinder pipework

    I have a Santon TP210B cylinder - I am told I have air in the system which is stopping the hot water from working. I have chopped into the existing heating circuit to add another radiator, but the hot water system seems to be suffering the most, which I cannot get my head around - This new...
  7. H

    10mm pipework for cold water..why not?

    why is 10mm pipe not used for taps/toilet outlets? Why do I need the same diam pipe at the wash basin or toilet as I do at the bath or shower? I can't think of a reason why not so before I implement this, have I missed something that's not so obvious to a layman?
  8. D

    Power shower outlet pipework

    Hi all, I'm about to replace the pump used for my power shower / bath filler. It's a Stuart-Turner Turbo 30T 3.0bar pump, 22mm inlet and outlet. The installation has been done so that the 22mm outlet reduces to 15mm pipework within less than a metre of the pump. I was thinking of...
  9. B

    Green ' gunge ' on pipework.

    Can anyone explain what is happening to the pipework in a relatively new boiler in the attached image?
  10. Bogart

    Underground heating pipework and flushing.

    Right have decided to have a good go at my heating system so I have basically 2 questions. 1. I have an old oil boiler situated some 25m away from the house. It leaves the boiler in 28mm copper changes to 35mm copper in the boiler house , exits the boiler house and goes underground and just...
  11. M

    Can water flow rate be measured at the supply pipework?

    Hello Guys I recently posted a thread about low water pressure at taps in a new kitchen installed by a company using sub-contractors. I have 0.44 bar of hot water pressure and am getting a flow rate of 4.5 Lpm at the new hot monobloc. The Blanco people say that the taps are rated at minimum 0.3...
  12. P

    Central heating pipework

    Just moved in, and lifted the floor to repair a damaged radiator pipe. The system was originally a gravity fed/ immersion tank as the pipework goes to that corner of the room an back again. There is an extra pipe which goes between the flow and return side of the pipework. The boiler is...
  13. N

    Hunter Genova Pipework

    I came across this for the first time yesterday, i have seen something similiar in the past when i was an apprentice but that was a long time ago. Just thought that i would put this up so as to help anyone out there that may come across it. Its plastic pipe that takes cold main, in this...
  14. S

    Does this pipework look right to you?

    Hi everyone, this is my first post. I've recently purchased a home where the prior owners have had some sub-standard work done in the past. The pipework in the photos is the hot water feed from the solar panels down to the hot water tank. It looks like the copper pipe has been routed quite...
  15. J

    Commercial meter/pipework, an ECV and a domestic boiler

    Evening all! I am a domestic engineer and I have been asked to swap an existing domestic boiler which is part of a commercial system. Think keeping the office warm but they need commercial gas to run their kitchens. My question is: If there's is an ECV downstream of the existing boiler, can I...
  16. B

    Pipework under sink and bathroom basin with pics query

    Hi everyone, I took pictures to better illustrate my questions and hope it helps. The hot water pipe under the sink (top pipe) has a valve on it with the number 15 on it and the cold pipe (under top pipe) has a stopcock which stops the water coming into the kitchen sink. Does the cold pipe...
  17. T

    Radiator change on large pipework

    Hi, I have 1 radiator in the house where the radiator is on a different diameter pipework. The rest of the house is 15mm but this could be 22mm, I'm not sure. I want to replace this radiator with a new one and if possible I dont want to disturb the original parkay flooring. What do I need to...
  18. P

    Hot water keeps drawing in air, pipework incorrect?

    Hi lads and lasses, I have this customer that has to keep forcing mains pressure back through his vented hot water system every week due to a blockage or air as he explained it. He said it has been like it since he has moved in but has got progressively work he has been there for around 6 years...
  19. A

    Location of megaflo in overall household pipework?

    Hi all. If you were retrofitting a Megaflo with system boiler, would you be wanting to have a direct mains water feed going into the Megaflo first and then the feed continuing into the rest of the house or doesn't it matter? At the moment, the mains water go straight into the kitchen (where the...
  20. Sid Viscous

    Persistent air issue in pipework through loft

    Evening chaps, I'm having a bit of a mare with a pumped shower I fitted a few months back. The customer had an existing gravity shower fitted & wanted a pump fitting. I put an RP75PT in the loft on the original pipework, a Surry flange on the cylinder and AAVs on the positive side of the pump...

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