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s plan

The S-Plan or Sabotage Campaign or England Campaign was a campaign of bombing and sabotage against the civil, economic and military infrastructure of the United Kingdom from 1939 to 1940, conducted by members of the Irish Republican Army (IRA). It was conceived by Seamus O'Donovan in 1938 at the request of then IRA Chief of Staff Seán Russell. Russell and Joseph McGarrity are thought to have formulated the strategy in 1936.

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  1. M

    New S Plan Plus to be installed... contains 3D drawing... must be viewed :)

    Hello All, First Time Poster on this forum and would appreciate some advice on a new S Plan Plus System Im looking to have installed next week. Im an engineer by profession, however not a heating engineer or plumber, but have picked up a few things here and there and from reading textbooks...
    • mozilla19
    • Thread
    • boiler central heating system installed plus return s plan system which
    • Replies: 21
    • Forum: Plumbing Jobs | The Job-board
  2. stani

    S plan,

    Just rewired a c/h zone and hot water zone into an S plan, due to an excess of wiring from old systems, and the pump running 24/7. however, client has said rads got hot on hot water only,may be crap in c/h valve not allowing it to fully shut, but just wondering if I need to add the c-/h closed...
  3. M

    just studying s plan wiring diagrams...

    With different programmers. I see in the honeywell wiring guide, using the honeywell wiring centre it has in the back a list of programmers to connect into this circut, and where to connect the terminals into the wiring centre. With the horstmann 2 channel programmer, it says put the hw off...
  4. D

    Electrical Sticky - S Plan Reference Thread

    This sticky is a reference only thread and will be populated by posts referring to S plan wiring only.
  5. A

    s plan wiring

    hello, Im looking at a ch & hw system, currently has 2 x zone valves on heating upstairs and one for downstairs. no zone valve on the hw cylinder...i'll be fitting this and converting the system to an s plan plus,. the honeywell junction box is all there and the 2 channel...
  6. E

    s plan and a bit

    got a strange one here, back boiler cravety hot water, builder wants me to fitt uf heating in the extion, so i will have to fitt two zone valves one for the new heating and one for exasting but how do i get the boiler to come on with out setting the pump away? when i just want hot water, bear in...
  7. S

    S plan layout question

    Hi, I'm about to swap out our 15 year old vented indirect hot water cylinder for a more up to date vented indirect cylinder and as part of the upgrade I'm considering changing the current Y plan layout to an S plan layout for improved reliability. One question I have, is in relation to how the...
  8. E

    y plan / s plan system??

    What do you call a heating system that has a 2 port valve and a 3 port valve?? Had to move the wiring for one today and was slightly baffled by what i saw. would the 3 port valve be for the heating??
  9. K

    Wiring question on s plan system

    Hi there, thanks for taking the time on reading this. A friend heating engineer of mine has recently updated my y plan central heating system, to a fully pumped s plan system, unfortunately the electrician he uses has let him dow a few times, so feeling fairly confident at electrics, have...
  10. B

    s plan, y plan made easy?

    the boss told me today that you can now get kits that make wiring an s plan or y plan easy..smart something he said??? does anyone have a link so i can have a look. never had a problem with them myself but was interested to see the kit thanks
  11. S

    s plan overflowing

    hi can you help i have relaced my danesmoor 15/19 with a danesmoor 20/25 and relocated boiler to a different location , i now have a problem with system overflowing thou the vent pipe after approx 5 mins of running could this be the result of to much air in the system . please not the boiler...
  12. E

    valliant s plan wiring

    Evening all, Tomorrow Im connecting an s plan heating system with a valliant boiler. ive followed the diagram and its nearly all connected from the octaveblue webiste. ive run a 5 core from connection box to boiler. i looked in manual and it shows the link still connected on 3 and 4 for the...
  13. M

    where do I wire the underfloor heating pump on a S plan system

    Hi I have just changed from a Y to a S plan with 3 zones but the wiring instructions do not say where to wire the UF pump. I have a horstmann h37xl programmer & am working from the wiring diagram Masterpack 37 which I have linked below...
    • markwilt
    • Thread
    • heating pump s plan system ufh under floor heating underfloor underfloor heating using valve where wire
    • Replies: 3
    • Forum: Plumbing Jobs | The Job-board
  14. M

    Can I add underfloor zone before the pump on a S plan system

    Hi I am going to change from a Y plan to a S plan to add underfloor heating to a conservatory. I plan to change the mid position valve to 2 single zone valves in the airing cupboard then add a third zone valve control the underfloor heating. All plans I have seen say you must put the...
    • markwilt
    • Thread
    • before forum plumbing pump s plan system underfloor zone
    • Replies: 4
    • Forum: Plumbing Zone
  15. P

    S Plan Plus - Wiring a new zone

    Hi all, after searching and not finding a wiring diagram for s plan plus I have been racking my brain as to how to wire it. Could someone please confirm if my attempt at wiring in this picture would/would not work for adding another zone on to an s plan?
    • plumbitp
    • Thread
    • forum new plumbing plus s plan wiring zone
    • Replies: 14
    • Forum: Plumbing Zone
  16. R

    3 Tee Rule on S Plan Plus

    Hi Advice needed, this is the pipe layout for a s plan plus system. Note the 3 tee rule has been broken ( The hot water should be the tee nearest on the return from boiler). In my case because of zoning the hot water return is furthest from the boiler. On my layout - looking at returns...
  17. G

    S plan heating system

    Hi guys. Just a quick question as to the install of this system. If the boiler is fitted downstairs and the cyclinder and valves upstairs does this mean that 4 pipes have to be run upstairs with regards to heating?. Central heating flow, Central heating return, Hot water return( to tee in after...
    • Glengormless
    • Thread
    • boiler central heating system cylinder going heating system return s plan system
    • Replies: 24
    • Forum: Plumbing Jobs | The Job-board
  18. P

    Advantages of a S plan over a Y plan

    Hi A very basic question for all you experienced plumbers, but I am curious, how beneficial would it be to change a system from a Y plan system to a S plan system? Thanks Paul
  19. T

    S Plan with strange wiring

    My friend moved into an ex council house and wanted me to go and have a look at the heating. She was complaining of the heating coming on when she turned on the hot water. I thought this will be straightforward enough - c/h zone valve will be stuck open. I went to have a look tonight and found...
  20. V

    S plan wiring diagram.

    I am looking at S plan wiring diagram's in a book and trying to understand it. Can any one explain what the different colour wires are and what they do. I think I know the basics. L = Brown. N = Blue. E = Yellow+Green. But what are the Grey and Orange wire, Orange I think is switch live...
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