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return

Recent contents Top users
  1. M

    Location of secondary return pump and return pipe for underfloor heating.

    I am fitting a secondary return on a system, tank will be in the loft. All the pipework goes up to the loft at the back of a cupboard, I would like the pump to go on the return pipe in here so it is easily accessable for maintenance. My collegue says he thinks it should go to as near to the tank...
  2. B

    15mm flow and return, plate exchanger blockage?

    The combi boiler has 22mm flow and return outlets but they are immediately reduced to 15mm as they come out the boiler. After the pipes come out of the boiler, they split off into 3 branches. Branch 1 is for a single radiator only. Branch 2 feeds about 9000BTU diownstairs and branch 3 feeds...
  3. M

    Adding a secondary return to a system

    Hi, what do people a think is the best way to add a secondary return to an unvented cylinder install. The scenario is I am quoting to replace a gravity system with an unvented. The bathroom furthest away takes around 2 minutes to get hot water. The problem is all the floors are glued and...
  4. M

    Self assessment return advice?

    hi folks. I'm attempting to do a self assessment as part of last year I worked as a subby for 6 months. I'm struggling with a couple of bits. Can any of you guys offer any guidance ??
  5. D

    Non return valve- Hot water bath?!

    Hi (System is header tank in loft, indirect hot water tank) After the hot water isolation valve under my bath, there is a non return valve between the isolation valve and the hot water tap. When I switch the hot water (mixer tap) on in the bath nothing happens until I flick the SINK mixer...
    • Deleted member 84317
    • Thread
    • bath hot water return water
    • Replies: 34
    • Forum: Bathroom Advice
  6. G

    Non Return Valve on low pressure system

    Hi, Previously wrote on here as the tank in the attic was overflowing due to mains pressure back flow up the hot water tank fed pipes. Resolved this issue with a NRV on the hot pipe coming from my twin pump. (See pic) Solved my issue but because the NRV is spring loaded the pump doesn’t...
  7. A

    Worcester 24i Junior Return Unit By-pass Valve

    Have had to replace the pressure relief valve - unfortunately, the way the boiler was installed (pipes not far enough back away from the heat exchanger) I had to remove the return unit to be able to access the valve. This is where things went a little awry... the by-pass valve (87161064340) fell...
  8. H

    Identify Boiler Return

    Hello Forum, Please could you help confirm that Pipe 'A' is the boiler return? - Pipe 'C' confused me, but I believe it is the return from Upstairs/Downstairs heating zones. Pipe Description A Boiler Return? B Boiler Flow C Return from Upstairs/Downstairs heating zones? D...
    • hallra
    • Thread
    • boiler return
    • Replies: 21
    • Forum: Boilers
  9. A

    Why does filling loop have to be installed to the return pipe?

    Hi all Im a gsr and just after clarification into this,as genrally manufatures state to install on return pipe of boilers. Im only asking for advise, as a senior gsr said to me that its best to install on the flow side as when flushing the system connecting to the filter, it helps filling water...
  10. D

    Underfloor heating - supply & return flow temperature question

    Hi I have a wet based underfloor heating system and I've noticed that the stone floor in our kitchen isn't warming up evenly. There is one patch that is much warmer than other areas. I have noticed that when I look at the manifold the supply temperature is running at around 50 to 55 degs but...
  11. G

    Radiator problem - busted lock shield / return valve

    Hi I am not an expert so I apologise if any of my post come across as naive. I have a pretty new boiler and there is one radiator on the system that never warms up and it hasn't for a long time but have just ignored it. It is most likely the last radiator in on the system. After having a look...
  12. robj20

    Ideal Vogue "Flow/Return Thermistor Fault" again.

    Boiler, Ideal Vogue Gen2 C32 Honeywell Evohome with Opentherm. Had Ideal out last year and they changed the thermistor, but this year its doing it again. Strangely same time of year. Suggestions last year from the installer was to remove the Evohome TRV from one radiator to act as a bypass. I...
  13. R

    Connecting flow and return on radiators

    Hello I have been told that I can connect a new radiator circuit to the pipe work in the airing cupboard. I guess the flow can be teed off below the zone valve? Where do you pick up the return from? It’s a s plan system and in this forum I have heard about the last tee. Is this where the pipe at...
  14. A

    Flow and return the wrong way around

    I would really appreciate your view on this underfloor heating set-up. I’m experiencing what sounds like a knocking noise from the manifold/pipework (can’t tell which) for a few seconds whenever the underfloor heating zones are switched on, so am wondering if it’s an issue with a valve or...
  15. K

    What is the correct orientation of a tee in a flow return circuit?

    Hi all, I suspect I've incorrectly used a tee in the flow return as the two radiators don't seem to get hot enough. I have two radiators and their flow returns feed into opposing ends of a tee. Like below. Rad ----|---- Rad Return I think it should be like - Rad -------|------- Return...
  16. T

    The final return tee: always the immersion cylinder return, but is it a standard?

    Hi, Long story short: my boiler (gas, conventional, vented, three port system) has been moved from one side of the house to the other. Previously the immersion cylinder return was the final tee before reaching the boiler, and all worked fine. Now the immersion cylinder return is a few tees...
  17. Mark Garland

    Hot flow and return pipes, hot upstairs rad but cold rads downstairs

    As in the title, the flow and return pipes both get hot when the heating is turned on, yet only the upstairs radiators get hot. I am very puzzled by this. Even turning off all thermostatic valves upstairs, none of the downstairs rads get hot. Our plumber says there must be a blockage looking...
  18. R

    Combi boiler using old central heating flow and return

    Hi all, Just a quick question that I have so far received mixed views on. I currently have a vented central heating system, which I plan to have replaced with a combi boiler in the garage. In order to link up with the existing network, one plumber suggested sending the cold water from the...
    • Rodders
    • Thread
    • boiler central central heating combi combi boiler flow heating return
    • Replies: 14
    • Forum: Boilers
  19. Inverness

    advise on flow and return points unvented cylinder compared to the height of the header tank

    Hi guys, before I go ahead and install a indirect cylinder. The problem is in the loft where the flow and return points on the cylinder are similar height less than 0.1 bar to the header tank. I'm worried about there might not be enough head from the top of header tank to the flow going into...
  20. B

    Common return off 2 separate systems??

    Hi guys. I am putting in 2 altherma heating system into a house. We need 5 pipes from the plantroom to the house however the plumber has only put in 4 pipes. Would it be possible to have a common return off the upstairs and downstairs systems returning to 2 low loss headers in the plantroom. The...
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